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annotate src/video/SDL_surface.c @ 1684:c4aa1a2f48f1 SDL-1.3

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Software YUV texture support in progress...
author Sam Lantinga <slouken@libsdl.org>
date Sun, 18 Jun 2006 06:35:41 +0000
parents 396a35389351
children a1ebb17f9c52
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 #include "SDL_video.h"
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25 #include "SDL_compat.h"
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26 #include "SDL_sysvideo.h"
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27 #include "SDL_blit.h"
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28 #include "SDL_RLEaccel_c.h"
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29 #include "SDL_pixels_c.h"
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30 #include "SDL_leaks.h"
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31
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32
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33 /* Public routines */
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34 /*
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35 * Create an empty RGB surface of the appropriate depth
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36 */
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37 SDL_Surface *
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38 SDL_CreateRGBSurface(Uint32 flags,
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39 int width, int height, int depth,
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40 Uint32 Rmask, Uint32 Gmask, Uint32 Bmask, Uint32 Amask)
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41 {
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42 SDL_Surface *screen;
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43 SDL_Surface *surface;
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44
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45 /* FIXME!! */
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46 /* Make sure the size requested doesn't overflow our datatypes */
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47 /* Next time I write a library like SDL, I'll use int for size. :) */
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48 if (width >= 16384 || height >= 65536) {
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49 SDL_SetError("Width or height is too large");
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50 return NULL;
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51 }
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52
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53 /* Allocate the surface */
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54 surface = (SDL_Surface *) SDL_malloc(sizeof(*surface));
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55 if (surface == NULL) {
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56 SDL_OutOfMemory();
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57 return NULL;
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58 }
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59 SDL_zerop(surface);
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60
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61 surface->format = SDL_AllocFormat(depth, Rmask, Gmask, Bmask, Amask);
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62 if (!surface->format) {
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63 SDL_FreeSurface(surface);
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64 return NULL;
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65 }
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66 if (Amask) {
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67 surface->flags |= SDL_SRCALPHA;
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68 }
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69 surface->w = width;
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70 surface->h = height;
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71 surface->pitch = SDL_CalculatePitch(surface);
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72 SDL_SetClipRect(surface, NULL);
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73
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74 if (surface->format->BitsPerPixel <= 8) {
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75 SDL_Palette *palette =
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76 SDL_AllocPalette((1 << surface->format->BitsPerPixel));
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77 if (!palette) {
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78 SDL_FreeSurface(surface);
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79 return NULL;
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80 }
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81 if (Rmask || Bmask || Gmask) {
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82 const SDL_PixelFormat *format = surface->format;
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83
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84 /* create palette according to masks */
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85 int i;
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86 int Rm = 0, Gm = 0, Bm = 0;
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87 int Rw = 0, Gw = 0, Bw = 0;
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88
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89 if (Rmask) {
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90 Rw = 8 - format->Rloss;
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91 for (i = format->Rloss; i > 0; i -= Rw)
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92 Rm |= 1 << i;
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93 }
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94 if (Gmask) {
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95 Gw = 8 - format->Gloss;
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96 for (i = format->Gloss; i > 0; i -= Gw)
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97 Gm |= 1 << i;
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98 }
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99 if (Bmask) {
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100 Bw = 8 - format->Bloss;
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101 for (i = format->Bloss; i > 0; i -= Bw)
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102 Bm |= 1 << i;
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103 }
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104 for (i = 0; i < palette->ncolors; ++i) {
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105 int r, g, b;
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106 r = (i & Rmask) >> format->Rshift;
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107 r = (r << format->Rloss) | ((r * Rm) >> Rw);
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108 palette->colors[i].r = r;
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109
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110 g = (i & Gmask) >> format->Gshift;
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111 g = (g << format->Gloss) | ((g * Gm) >> Gw);
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112 palette->colors[i].g = g;
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113
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114 b = (i & Bmask) >> format->Bshift;
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115 b = (b << format->Bloss) | ((b * Bm) >> Bw);
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116 palette->colors[i].b = b;
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117 }
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118 } else if (palette->ncolors == 2) {
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119 /* Create a black and white bitmap palette */
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120 palette->colors[0].r = 0xFF;
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121 palette->colors[0].g = 0xFF;
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122 palette->colors[0].b = 0xFF;
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123 palette->colors[1].r = 0x00;
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124 palette->colors[1].g = 0x00;
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125 palette->colors[1].b = 0x00;
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126 }
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127 SDL_SetSurfacePalette(surface, palette);
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128 SDL_FreePalette(palette);
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129 }
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130
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131 /* Get the pixels */
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132 if (surface->w && surface->h) {
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133 surface->pixels = SDL_malloc(surface->h * surface->pitch);
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134 if (!surface->pixels) {
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135 SDL_FreeSurface(surface);
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136 SDL_OutOfMemory();
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137 return NULL;
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138 }
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139 /* This is important for bitmaps */
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140 SDL_memset(surface->pixels, 0, surface->h * surface->pitch);
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141 }
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142
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143 /* Allocate an empty mapping */
1668
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144 surface->map = SDL_AllocBlitMap();
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diff changeset
145 if (!surface->map) {
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diff changeset
146 SDL_FreeSurface(surface);
1683
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147 return NULL;
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148 }
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diff changeset
149 SDL_FormatChanged(surface);
0
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diff changeset
150
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151 /* The surface is ready to go */
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152 surface->refcount = 1;
0
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diff changeset
153 #ifdef CHECK_LEAKS
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154 ++surfaces_allocated;
0
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diff changeset
155 #endif
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156 return surface;
0
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157 }
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158
0
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159 /*
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160 * Create an RGB surface from an existing memory buffer
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161 */
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162 SDL_Surface *
1668
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163 SDL_CreateRGBSurfaceFrom(void *pixels,
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diff changeset
164 int width, int height, int depth, int pitch,
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diff changeset
165 Uint32 Rmask, Uint32 Gmask, Uint32 Bmask,
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166 Uint32 Amask)
0
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167 {
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168 SDL_Surface *surface;
0
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169
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170 surface =
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171 SDL_CreateRGBSurface(0, 0, 0, depth, Rmask, Gmask, Bmask, Amask);
1662
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172 if (surface != NULL) {
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173 surface->flags |= SDL_PREALLOC;
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174 surface->pixels = pixels;
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175 surface->w = width;
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diff changeset
176 surface->h = height;
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177 surface->pitch = pitch;
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178 SDL_SetClipRect(surface, NULL);
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diff changeset
179 }
1670
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diff changeset
180 return surface;
eef792d31de8 Work in progress. :)
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181 }
eef792d31de8 Work in progress. :)
Sam Lantinga <slouken@libsdl.org>
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diff changeset
182
eef792d31de8 Work in progress. :)
Sam Lantinga <slouken@libsdl.org>
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diff changeset
183 SDL_Surface *
eef792d31de8 Work in progress. :)
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184 SDL_CreateRGBSurfaceFromTexture(SDL_TextureID textureID)
eef792d31de8 Work in progress. :)
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diff changeset
185 {
eef792d31de8 Work in progress. :)
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diff changeset
186 SDL_Surface *surface;
eef792d31de8 Work in progress. :)
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diff changeset
187 Uint32 format;
eef792d31de8 Work in progress. :)
Sam Lantinga <slouken@libsdl.org>
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diff changeset
188 int w, h;
eef792d31de8 Work in progress. :)
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diff changeset
189 int bpp;
eef792d31de8 Work in progress. :)
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diff changeset
190 Uint32 Rmask, Gmask, Bmask, Amask;
1678
90bf530ced8e SDL_SetVideoMode() compiles now...
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diff changeset
191 void *pixels;
90bf530ced8e SDL_SetVideoMode() compiles now...
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diff changeset
192 int pitch;
1670
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diff changeset
193
eef792d31de8 Work in progress. :)
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diff changeset
194 if (SDL_QueryTexture(textureID, &format, NULL, &w, &h) < 0) {
eef792d31de8 Work in progress. :)
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diff changeset
195 return NULL;
eef792d31de8 Work in progress. :)
Sam Lantinga <slouken@libsdl.org>
parents: 1668
diff changeset
196 }
eef792d31de8 Work in progress. :)
Sam Lantinga <slouken@libsdl.org>
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diff changeset
197
eef792d31de8 Work in progress. :)
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diff changeset
198 if (!SDL_PixelFormatEnumToMasks
eef792d31de8 Work in progress. :)
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diff changeset
199 (format, &bpp, &Rmask, &Gmask, &Bmask, &Amask)) {
eef792d31de8 Work in progress. :)
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diff changeset
200 SDL_SetError("Unknown texture format");
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
201 return NULL;
eef792d31de8 Work in progress. :)
Sam Lantinga <slouken@libsdl.org>
parents: 1668
diff changeset
202 }
eef792d31de8 Work in progress. :)
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diff changeset
203
1678
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diff changeset
204 if (SDL_QueryTexturePixels(textureID, &pixels, &pitch) == 0) {
90bf530ced8e SDL_SetVideoMode() compiles now...
Sam Lantinga <slouken@libsdl.org>
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diff changeset
205 surface =
90bf530ced8e SDL_SetVideoMode() compiles now...
Sam Lantinga <slouken@libsdl.org>
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diff changeset
206 SDL_CreateRGBSurfaceFrom(pixels, w, h, bpp, pitch, Rmask, Gmask,
90bf530ced8e SDL_SetVideoMode() compiles now...
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diff changeset
207 Bmask, Amask);
90bf530ced8e SDL_SetVideoMode() compiles now...
Sam Lantinga <slouken@libsdl.org>
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diff changeset
208 } else {
90bf530ced8e SDL_SetVideoMode() compiles now...
Sam Lantinga <slouken@libsdl.org>
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diff changeset
209 surface =
90bf530ced8e SDL_SetVideoMode() compiles now...
Sam Lantinga <slouken@libsdl.org>
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diff changeset
210 SDL_CreateRGBSurface(0, 0, 0, bpp, Rmask, Gmask, Bmask, Amask);
90bf530ced8e SDL_SetVideoMode() compiles now...
Sam Lantinga <slouken@libsdl.org>
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diff changeset
211 if (surface) {
90bf530ced8e SDL_SetVideoMode() compiles now...
Sam Lantinga <slouken@libsdl.org>
parents: 1672
diff changeset
212 surface->flags |= SDL_HWSURFACE;
90bf530ced8e SDL_SetVideoMode() compiles now...
Sam Lantinga <slouken@libsdl.org>
parents: 1672
diff changeset
213 surface->w = w;
90bf530ced8e SDL_SetVideoMode() compiles now...
Sam Lantinga <slouken@libsdl.org>
parents: 1672
diff changeset
214 surface->h = h;
90bf530ced8e SDL_SetVideoMode() compiles now...
Sam Lantinga <slouken@libsdl.org>
parents: 1672
diff changeset
215 SDL_SetClipRect(surface, NULL);
90bf530ced8e SDL_SetVideoMode() compiles now...
Sam Lantinga <slouken@libsdl.org>
parents: 1672
diff changeset
216 }
1670
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diff changeset
217 }
1683
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
218 if (surface) {
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
219 surface->textureID = textureID;
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
220 }
1678
90bf530ced8e SDL_SetVideoMode() compiles now...
Sam Lantinga <slouken@libsdl.org>
parents: 1672
diff changeset
221
1670
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diff changeset
222 return surface;
eef792d31de8 Work in progress. :)
Sam Lantinga <slouken@libsdl.org>
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diff changeset
223 }
eef792d31de8 Work in progress. :)
Sam Lantinga <slouken@libsdl.org>
parents: 1668
diff changeset
224
1683
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
225 static int
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
226 SDL_SurfacePaletteChanged(void *userdata, SDL_Palette * palette)
1670
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
227 {
1683
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
228 SDL_Surface *surface = (SDL_Surface *) userdata;
1670
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diff changeset
229
1683
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
230 if (surface->textureID) {
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
231 if (SDL_SetTexturePalette
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
232 (surface->textureID, palette->colors, 0, palette->ncolors) < 0) {
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
233 SDL_GetTexturePalette(surface->textureID, palette->colors, 0,
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
234 palette->ncolors);
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
235 return -1;
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
236 }
1670
eef792d31de8 Work in progress. :)
Sam Lantinga <slouken@libsdl.org>
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diff changeset
237 }
eef792d31de8 Work in progress. :)
Sam Lantinga <slouken@libsdl.org>
parents: 1668
diff changeset
238 SDL_FormatChanged(surface);
eef792d31de8 Work in progress. :)
Sam Lantinga <slouken@libsdl.org>
parents: 1668
diff changeset
239
1683
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
240 return 0;
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
241 }
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
242
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
243 int
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
244 SDL_SetSurfacePalette(SDL_Surface * surface, SDL_Palette * palette)
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
245 {
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
246 if (!surface || !surface->format) {
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
247 SDL_SetError("SDL_SetSurfacePalette() passed a NULL surface");
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
248 return -1;
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
249 }
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
250
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
251 if (palette && palette->ncolors != (1 << surface->format->BitsPerPixel)) {
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
252 SDL_SetError
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
253 ("SDL_SetSurfacePalette() passed a palette that doesn't match the surface format");
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
254 return -1;
1670
eef792d31de8 Work in progress. :)
Sam Lantinga <slouken@libsdl.org>
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diff changeset
255 }
1683
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
256
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
257 if (surface->format->palette == palette) {
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
258 return 0;
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
259 }
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
260
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
261 if (surface->format->palette) {
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
262 SDL_DelPaletteWatch(surface->format->palette,
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
263 SDL_SurfacePaletteChanged, surface);
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
264 }
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
265
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
266 surface->format->palette = palette;
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
267
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
268 if (surface->format->palette) {
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
269 SDL_AddPaletteWatch(surface->format->palette,
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
270 SDL_SurfacePaletteChanged, surface);
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
271 }
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
272 return 0;
0
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diff changeset
273 }
1662
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diff changeset
274
0
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diff changeset
275 /*
74212992fb08 Initial revision
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parents:
diff changeset
276 * Set the color key in a blittable surface
74212992fb08 Initial revision
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diff changeset
277 */
1662
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diff changeset
278 int
1668
4da1ee79c9af more tweaking indent options
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diff changeset
279 SDL_SetColorKey(SDL_Surface * surface, Uint32 flag, Uint32 key)
0
74212992fb08 Initial revision
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parents:
diff changeset
280 {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
281 /* Sanity check the flag as it gets passed in */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
282 if (flag & SDL_SRCCOLORKEY) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1456
diff changeset
283 if (flag & (SDL_RLEACCEL | SDL_RLEACCELOK)) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
284 flag = (SDL_SRCCOLORKEY | SDL_RLEACCELOK);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
285 } else {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
286 flag = SDL_SRCCOLORKEY;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
287 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
288 } else {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
289 flag = 0;
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290 }
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291
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292 /* Optimize away operations that don't change anything */
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293 if ((flag == (surface->flags & (SDL_SRCCOLORKEY | SDL_RLEACCELOK))) &&
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294 (key == surface->format->colorkey)) {
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295 return (0);
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296 }
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297
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298 /* UnRLE surfaces before we change the colorkey */
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299 if (surface->flags & SDL_RLEACCEL) {
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300 SDL_UnRLESurface(surface, 1);
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301 }
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302
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303 if (flag) {
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304 surface->flags |= SDL_SRCCOLORKEY;
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305 surface->format->colorkey = key;
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306 if (flag & SDL_RLEACCELOK) {
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307 surface->flags |= SDL_RLEACCELOK;
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308 } else {
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309 surface->flags &= ~SDL_RLEACCELOK;
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310 }
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311 } else {
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312 surface->flags &= ~(SDL_SRCCOLORKEY | SDL_RLEACCELOK);
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313 surface->format->colorkey = 0;
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314 }
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315 SDL_InvalidateMap(surface->map);
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316 return (0);
0
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317 }
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318
431
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319 /* This function sets the alpha channel of a surface */
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320 int
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321 SDL_SetAlpha(SDL_Surface * surface, Uint32 flag, Uint8 value)
0
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322 {
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323 Uint32 oldflags = surface->flags;
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324 Uint32 oldalpha = surface->format->alpha;
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325
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326 /* Sanity check the flag as it gets passed in */
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327 if (flag & SDL_SRCALPHA) {
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328 if (flag & (SDL_RLEACCEL | SDL_RLEACCELOK)) {
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329 flag = (SDL_SRCALPHA | SDL_RLEACCELOK);
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330 } else {
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331 flag = SDL_SRCALPHA;
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332 }
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333 } else {
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334 flag = 0;
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335 }
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336
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337 /* Optimize away operations that don't change anything */
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338 if ((flag == (surface->flags & (SDL_SRCALPHA | SDL_RLEACCELOK))) &&
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339 (!flag || value == oldalpha)) {
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340 return (0);
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341 }
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342
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343 if (!(flag & SDL_RLEACCELOK) && (surface->flags & SDL_RLEACCEL))
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344 SDL_UnRLESurface(surface, 1);
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345
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346 if (flag) {
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347 surface->flags |= SDL_SRCALPHA;
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348 surface->format->alpha = value;
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349 if (flag & SDL_RLEACCELOK) {
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350 surface->flags |= SDL_RLEACCELOK;
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351 } else {
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352 surface->flags &= ~SDL_RLEACCELOK;
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353 }
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354 } else {
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355 surface->flags &= ~SDL_SRCALPHA;
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356 surface->format->alpha = SDL_ALPHA_OPAQUE;
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357 }
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diff changeset
358 /*
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359 * The representation for software surfaces is independent of
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360 * per-surface alpha, so no need to invalidate the blit mapping
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361 * if just the alpha value was changed. (If either is 255, we still
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362 * need to invalidate.)
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diff changeset
363 */
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diff changeset
364 if (oldflags != surface->flags
8e754b82cecc Updated SDL_Surface code for software-only access, fixed some build errors
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diff changeset
365 || (((oldalpha + 1) ^ (value + 1)) & 0x100)) {
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366 SDL_InvalidateMap(surface->map);
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367 }
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368 return (0);
0
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369 }
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370
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diff changeset
371 int
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372 SDL_SetAlphaChannel(SDL_Surface * surface, Uint8 value)
431
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
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diff changeset
373 {
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diff changeset
374 int row, col;
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diff changeset
375 int offset;
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diff changeset
376 Uint8 *buf;
431
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
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diff changeset
377
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diff changeset
378 if ((surface->format->Amask != 0xFF000000) &&
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diff changeset
379 (surface->format->Amask != 0x000000FF)) {
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diff changeset
380 SDL_SetError("Unsupported surface alpha mask format");
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diff changeset
381 return -1;
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diff changeset
382 }
431
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
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parents: 422
diff changeset
383 #if SDL_BYTEORDER == SDL_LIL_ENDIAN
1662
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diff changeset
384 if (surface->format->Amask == 0xFF000000) {
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diff changeset
385 offset = 3;
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diff changeset
386 } else {
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diff changeset
387 offset = 0;
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diff changeset
388 }
431
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
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diff changeset
389 #else
1662
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diff changeset
390 if (surface->format->Amask == 0xFF000000) {
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diff changeset
391 offset = 0;
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diff changeset
392 } else {
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diff changeset
393 offset = 3;
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diff changeset
394 }
431
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
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diff changeset
395 #endif /* Byte ordering */
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
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parents: 422
diff changeset
396
1662
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diff changeset
397 /* Quickly set the alpha channel of an RGBA or ARGB surface */
1668
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diff changeset
398 if (SDL_MUSTLOCK(surface)) {
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diff changeset
399 if (SDL_LockSurface(surface) < 0) {
1662
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diff changeset
400 return -1;
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diff changeset
401 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
402 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
403 row = surface->h;
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diff changeset
404 while (row--) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
405 col = surface->w;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
406 buf = (Uint8 *) surface->pixels + row * surface->pitch + offset;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
407 while (col--) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
408 *buf = value;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
409 buf += 4;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
410 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1456
diff changeset
411 }
1668
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diff changeset
412 if (SDL_MUSTLOCK(surface)) {
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diff changeset
413 SDL_UnlockSurface(surface);
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414 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
415 return 0;
431
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
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parents: 422
diff changeset
416 }
0
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parents:
diff changeset
417
74212992fb08 Initial revision
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parents:
diff changeset
418 /*
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parents:
diff changeset
419 * A function to calculate the intersection of two rectangles:
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parents:
diff changeset
420 * return true if the rectangles intersect, false otherwise
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diff changeset
421 */
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diff changeset
422 static __inline__ SDL_bool
1668
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423 SDL_IntersectRect(const SDL_Rect * A, const SDL_Rect * B,
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diff changeset
424 SDL_Rect * intersection)
0
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diff changeset
425 {
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782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
426 int Amin, Amax, Bmin, Bmax;
0
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parents:
diff changeset
427
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782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
428 /* Horizontal intersection */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
429 Amin = A->x;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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430 Amax = Amin + A->w;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
431 Bmin = B->x;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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432 Bmax = Bmin + B->w;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1456
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433 if (Bmin > Amin)
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Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
434 Amin = Bmin;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
435 intersection->x = Amin;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
436 if (Bmax < Amax)
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
437 Amax = Bmax;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
438 intersection->w = Amax - Amin > 0 ? Amax - Amin : 0;
0
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parents:
diff changeset
439
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782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
440 /* Vertical intersection */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
441 Amin = A->y;
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
442 Amax = Amin + A->h;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
443 Bmin = B->y;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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444 Bmax = Bmin + B->h;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
445 if (Bmin > Amin)
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
446 Amin = Bmin;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
447 intersection->y = Amin;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
448 if (Bmax < Amax)
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
449 Amax = Bmax;
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
450 intersection->h = Amax - Amin > 0 ? Amax - Amin : 0;
0
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parents:
diff changeset
451
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diff changeset
452 return (intersection->w && intersection->h);
0
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diff changeset
453 }
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diff changeset
454
0
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diff changeset
455 /*
74212992fb08 Initial revision
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parents:
diff changeset
456 * Set the clipping rectangle for a blittable surface
74212992fb08 Initial revision
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parents:
diff changeset
457 */
1662
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diff changeset
458 SDL_bool
1668
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diff changeset
459 SDL_SetClipRect(SDL_Surface * surface, const SDL_Rect * rect)
0
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diff changeset
460 {
1662
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diff changeset
461 SDL_Rect full_rect;
0
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diff changeset
462
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782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
463 /* Don't do anything if there's no surface to act on */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
464 if (!surface) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
465 return SDL_FALSE;
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diff changeset
466 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
467
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1456
diff changeset
468 /* Set up the full surface rectangle */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
469 full_rect.x = 0;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1456
diff changeset
470 full_rect.y = 0;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
471 full_rect.w = surface->w;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
472 full_rect.h = surface->h;
0
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parents:
diff changeset
473
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diff changeset
474 /* Set the clipping rectangle */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
475 if (!rect) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
476 surface->clip_rect = full_rect;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
477 return 1;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
478 }
1668
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diff changeset
479 return SDL_IntersectRect(rect, &full_rect, &surface->clip_rect);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
480 }
0
74212992fb08 Initial revision
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parents:
diff changeset
481
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1456
diff changeset
482 void
1668
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diff changeset
483 SDL_GetClipRect(SDL_Surface * surface, SDL_Rect * rect)
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
484 {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
485 if (surface && rect) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
486 *rect = surface->clip_rect;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
487 }
0
74212992fb08 Initial revision
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parents:
diff changeset
488 }
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
489
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
490 /*
74212992fb08 Initial revision
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parents:
diff changeset
491 * Set up a blit between two surfaces -- split into three parts:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
492 * The upper part, SDL_UpperBlit(), performs clipping and rectangle
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
493 * verification. The lower part is a pointer to a low level
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
494 * accelerated blitting function.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
495 *
74212992fb08 Initial revision
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parents:
diff changeset
496 * These parts are separated out and each used internally by this
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
497 * library in the optimimum places. They are exported so that if
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
498 * you know exactly what you are doing, you can optimize your code
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
499 * by calling the one(s) you need.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
500 */
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
501 int
1668
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Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
502 SDL_LowerBlit(SDL_Surface * src, SDL_Rect * srcrect,
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
503 SDL_Surface * dst, SDL_Rect * dstrect)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
504 {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
505 /* Check to make sure the blit mapping is valid */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
506 if ((src->map->dst != dst) ||
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
507 (src->map->dst->format_version != src->map->format_version)) {
1668
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Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
508 if (SDL_MapSurface(src, dst) < 0) {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
509 return (-1);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
510 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
511 }
1672
8e754b82cecc Updated SDL_Surface code for software-only access, fixed some build errors
Sam Lantinga <slouken@libsdl.org>
parents: 1670
diff changeset
512 return (src->map->sw_blit(src, srcrect, dst, dstrect));
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
513 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
514
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
515
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
516 int
1668
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Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
517 SDL_UpperBlit(SDL_Surface * src, SDL_Rect * srcrect,
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
518 SDL_Surface * dst, SDL_Rect * dstrect)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
519 {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
520 SDL_Rect fulldst;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
521 int srcx, srcy, w, h;
0
74212992fb08 Initial revision
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parents:
diff changeset
522
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
523 /* Make sure the surfaces aren't locked */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
524 if (!src || !dst) {
1668
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Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
525 SDL_SetError("SDL_UpperBlit: passed a NULL surface");
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
526 return (-1);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
527 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
528 if (src->locked || dst->locked) {
1668
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parents: 1666
diff changeset
529 SDL_SetError("Surfaces must not be locked during blit");
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
530 return (-1);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
531 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
532
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
533 /* If the destination rectangle is NULL, use the entire dest surface */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
534 if (dstrect == NULL) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
535 fulldst.x = fulldst.y = 0;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
536 dstrect = &fulldst;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
537 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
538
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
539 /* clip the source rectangle to the source surface */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
540 if (srcrect) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
541 int maxw, maxh;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
542
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
543 srcx = srcrect->x;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
544 w = srcrect->w;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
545 if (srcx < 0) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
546 w += srcx;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
547 dstrect->x -= srcx;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
548 srcx = 0;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
549 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
550 maxw = src->w - srcx;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
551 if (maxw < w)
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
552 w = maxw;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
553
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
554 srcy = srcrect->y;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
555 h = srcrect->h;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
556 if (srcy < 0) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
557 h += srcy;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
558 dstrect->y -= srcy;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
559 srcy = 0;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
560 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
561 maxh = src->h - srcy;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
562 if (maxh < h)
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
563 h = maxh;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
564
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
565 } else {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
566 srcx = srcy = 0;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
567 w = src->w;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
568 h = src->h;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
569 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
570
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
571 /* clip the destination rectangle against the clip rectangle */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
572 {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
573 SDL_Rect *clip = &dst->clip_rect;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
574 int dx, dy;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
575
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
576 dx = clip->x - dstrect->x;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
577 if (dx > 0) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
578 w -= dx;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
579 dstrect->x += dx;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
580 srcx += dx;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
581 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
582 dx = dstrect->x + w - clip->x - clip->w;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
583 if (dx > 0)
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
584 w -= dx;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
585
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
586 dy = clip->y - dstrect->y;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
587 if (dy > 0) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
588 h -= dy;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
589 dstrect->y += dy;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
590 srcy += dy;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
591 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
592 dy = dstrect->y + h - clip->y - clip->h;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
593 if (dy > 0)
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
594 h -= dy;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
595 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
596
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
597 if (w > 0 && h > 0) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
598 SDL_Rect sr;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
599 sr.x = srcx;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
600 sr.y = srcy;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
601 sr.w = dstrect->w = w;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
602 sr.h = dstrect->h = h;
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
603 return SDL_LowerBlit(src, &sr, dst, dstrect);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
604 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
605 dstrect->w = dstrect->h = 0;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
606 return 0;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
607 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
608
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
609 static int
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
610 SDL_FillRect1(SDL_Surface * dst, SDL_Rect * dstrect, Uint32 color)
532
058d47b7a3b4 Return an error with color fills on less than 8 bpp surfaces.
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
611 {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
612 /* FIXME: We have to worry about packing order.. *sigh* */
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
613 SDL_SetError("1-bpp rect fill not yet implemented");
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
614 return -1;
532
058d47b7a3b4 Return an error with color fills on less than 8 bpp surfaces.
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
615 }
058d47b7a3b4 Return an error with color fills on less than 8 bpp surfaces.
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
616
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
617 static int
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
618 SDL_FillRect4(SDL_Surface * dst, SDL_Rect * dstrect, Uint32 color)
532
058d47b7a3b4 Return an error with color fills on less than 8 bpp surfaces.
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
619 {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
620 /* FIXME: We have to worry about packing order.. *sigh* */
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
621 SDL_SetError("4-bpp rect fill not yet implemented");
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
622 return -1;
532
058d47b7a3b4 Return an error with color fills on less than 8 bpp surfaces.
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
623 }
058d47b7a3b4 Return an error with color fills on less than 8 bpp surfaces.
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
624
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
625 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
626 * This function performs a fast fill of the given rectangle with 'color'
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
627 */
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
628 int
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
629 SDL_FillRect(SDL_Surface * dst, SDL_Rect * dstrect, Uint32 color)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
630 {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
631 int x, y;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
632 Uint8 *row;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
633
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
634 /* This function doesn't work on surfaces < 8 bpp */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
635 if (dst->format->BitsPerPixel < 8) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
636 switch (dst->format->BitsPerPixel) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
637 case 1:
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
638 return SDL_FillRect1(dst, dstrect, color);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
639 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
640 case 4:
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
641 return SDL_FillRect4(dst, dstrect, color);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
642 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
643 default:
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
644 SDL_SetError("Fill rect on unsupported surface format");
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
645 return (-1);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
646 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
647 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
648 }
532
058d47b7a3b4 Return an error with color fills on less than 8 bpp surfaces.
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
649
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
650 /* If 'dstrect' == NULL, then fill the whole surface */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
651 if (dstrect) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
652 /* Perform clipping */
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
653 if (!SDL_IntersectRect(dstrect, &dst->clip_rect, dstrect)) {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
654 return (0);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
655 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
656 } else {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
657 dstrect = &dst->clip_rect;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
658 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
659
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
660 /* Perform software fill */
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
661 if (SDL_LockSurface(dst) != 0) {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
662 return (-1);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
663 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
664 row = (Uint8 *) dst->pixels + dstrect->y * dst->pitch +
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
665 dstrect->x * dst->format->BytesPerPixel;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
666 if (dst->format->palette || (color == 0)) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
667 x = dstrect->w * dst->format->BytesPerPixel;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
668 if (!color && !((uintptr_t) row & 3) && !(x & 3)
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
669 && !(dst->pitch & 3)) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
670 int n = x >> 2;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
671 for (y = dstrect->h; y; --y) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
672 SDL_memset4(row, 0, n);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
673 row += dst->pitch;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
674 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
675 } else {
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
676 #ifdef __powerpc__
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
677 /*
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
678 * SDL_memset() on PPC (both glibc and codewarrior) uses
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
679 * the dcbz (Data Cache Block Zero) instruction, which
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
680 * causes an alignment exception if the destination is
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
681 * uncachable, so only use it on software surfaces
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
682 */
1672
8e754b82cecc Updated SDL_Surface code for software-only access, fixed some build errors
Sam Lantinga <slouken@libsdl.org>
parents: 1670
diff changeset
683 if (dst->flags & SDL_HWSURFACE) {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
684 if (dstrect->w >= 8) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
685 /*
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
686 * 64-bit stores are probably most
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
687 * efficient to uncached video memory
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
688 */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
689 double fill;
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
690 SDL_memset(&fill, color, (sizeof fill));
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
691 for (y = dstrect->h; y; y--) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
692 Uint8 *d = row;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
693 unsigned n = x;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
694 unsigned nn;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
695 Uint8 c = color;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
696 double f = fill;
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
697 while ((unsigned long) d & (sizeof(double) - 1)) {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
698 *d++ = c;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
699 n--;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
700 }
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
701 nn = n / (sizeof(double) * 4);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
702 while (nn) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
703 ((double *) d)[0] = f;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
704 ((double *) d)[1] = f;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
705 ((double *) d)[2] = f;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
706 ((double *) d)[3] = f;
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
707 d += 4 * sizeof(double);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
708 nn--;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
709 }
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
710 n &= ~(sizeof(double) * 4 - 1);
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
711 nn = n / sizeof(double);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
712 while (nn) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
713 *(double *) d = f;
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
714 d += sizeof(double);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
715 nn--;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
716 }
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
717 n &= ~(sizeof(double) - 1);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
718 while (n) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
719 *d++ = c;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
720 n--;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
721 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
722 row += dst->pitch;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
723 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
724 } else {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
725 /* narrow boxes */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
726 for (y = dstrect->h; y; y--) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
727 Uint8 *d = row;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
728 Uint8 c = color;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
729 int n = x;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
730 while (n) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
731 *d++ = c;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
732 n--;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
733 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
734 row += dst->pitch;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
735 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
736 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
737 } else
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
738 #endif /* __powerpc__ */
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
739 {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
740 for (y = dstrect->h; y; y--) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
741 SDL_memset(row, color, x);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
742 row += dst->pitch;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
743 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
744 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
745 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
746 } else {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
747 switch (dst->format->BytesPerPixel) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
748 case 2:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
749 for (y = dstrect->h; y; --y) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
750 Uint16 *pixels = (Uint16 *) row;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
751 Uint16 c = (Uint16) color;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
752 Uint32 cc = (Uint32) c << 16 | c;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
753 int n = dstrect->w;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
754 if ((uintptr_t) pixels & 3) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
755 *pixels++ = c;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
756 n--;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
757 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
758 if (n >> 1)
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
759 SDL_memset4(pixels, cc, n >> 1);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
760 if (n & 1)
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
761 pixels[n - 1] = c;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
762 row += dst->pitch;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
763 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
764 break;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
765
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
766 case 3:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
767 #if SDL_BYTEORDER == SDL_BIG_ENDIAN
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
768 color <<= 8;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
769 #endif
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
770 for (y = dstrect->h; y; --y) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
771 Uint8 *pixels = row;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
772 for (x = dstrect->w; x; --x) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
773 SDL_memcpy(pixels, &color, 3);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
774 pixels += 3;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
775 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
776 row += dst->pitch;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
777 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
778 break;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
779
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
780 case 4:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
781 for (y = dstrect->h; y; --y) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
782 SDL_memset4(row, color, dstrect->w);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
783 row += dst->pitch;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
784 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
785 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
786 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
787 }
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
788 SDL_UnlockSurface(dst);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
789
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
790 /* We're done! */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
791 return (0);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
792 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
793
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
794 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
795 * Lock a surface to directly access the pixels
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
796 */
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
797 int
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
798 SDL_LockSurface(SDL_Surface * surface)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
799 {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
800 if (!surface->locked) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
801 /* Perform the lock */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
802 if (surface->flags & SDL_HWSURFACE) {
1672
8e754b82cecc Updated SDL_Surface code for software-only access, fixed some build errors
Sam Lantinga <slouken@libsdl.org>
parents: 1670
diff changeset
803 if (SDL_LockTexture
1683
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
804 (surface->textureID, NULL, 1, &surface->pixels,
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
805 &surface->pitch) < 0) {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
806 return (-1);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
807 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
808 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
809 if (surface->flags & SDL_RLEACCEL) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
810 SDL_UnRLESurface(surface, 1);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
811 surface->flags |= SDL_RLEACCEL; /* save accel'd state */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
812 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
813 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
814
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
815 /* Increment the surface lock count, for recursive locks */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
816 ++surface->locked;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
817
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
818 /* Ready to go.. */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
819 return (0);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
820 }
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
821
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
822 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
823 * Unlock a previously locked surface
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
824 */
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
825 void
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
826 SDL_UnlockSurface(SDL_Surface * surface)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
827 {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
828 /* Only perform an unlock if we are locked */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
829 if (!surface->locked || (--surface->locked > 0)) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
830 return;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
831 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
832
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
833 /* Unlock hardware or accelerated surfaces */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
834 if (surface->flags & SDL_HWSURFACE) {
1683
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
835 SDL_UnlockTexture(surface->textureID);
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
836 }
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
837
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
838 /* Update RLE encoded surface with new data */
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
839 if ((surface->flags & SDL_RLEACCEL) == SDL_RLEACCEL) {
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
840 surface->flags &= ~SDL_RLEACCEL; /* stop lying */
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
841 SDL_RLESurface(surface);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
842 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
843 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
844
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
845 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
846 * Convert a surface into the specified pixel format.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
847 */
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
848 SDL_Surface *
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
849 SDL_ConvertSurface(SDL_Surface * surface,
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
850 SDL_PixelFormat * format, Uint32 flags)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
851 {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
852 SDL_Surface *convert;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
853 Uint32 colorkey = 0;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
854 Uint8 alpha = 0;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
855 Uint32 surface_flags;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
856 SDL_Rect bounds;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
857
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
858 /* Check for empty destination palette! (results in empty image) */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
859 if (format->palette != NULL) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
860 int i;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
861 for (i = 0; i < format->palette->ncolors; ++i) {
1682
7ae8018b2e5d Default palette entries to white, instead of black.
Sam Lantinga <slouken@libsdl.org>
parents: 1678
diff changeset
862 if ((format->palette->colors[i].r != 0xFF) ||
7ae8018b2e5d Default palette entries to white, instead of black.
Sam Lantinga <slouken@libsdl.org>
parents: 1678
diff changeset
863 (format->palette->colors[i].g != 0xFF) ||
7ae8018b2e5d Default palette entries to white, instead of black.
Sam Lantinga <slouken@libsdl.org>
parents: 1678
diff changeset
864 (format->palette->colors[i].b != 0xFF))
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
865 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
866 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
867 if (i == format->palette->ncolors) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
868 SDL_SetError("Empty destination palette");
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
869 return (NULL);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
870 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
871 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
872
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
873 /* Create a new surface with the desired format */
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
874 convert = SDL_CreateRGBSurface(flags,
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
875 surface->w, surface->h,
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
876 format->BitsPerPixel, format->Rmask,
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
877 format->Gmask, format->Bmask,
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
878 format->Amask);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
879 if (convert == NULL) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
880 return (NULL);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
881 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
882
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
883 /* Copy the palette if any */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
884 if (format->palette && convert->format->palette) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
885 SDL_memcpy(convert->format->palette->colors,
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
886 format->palette->colors,
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
887 format->palette->ncolors * sizeof(SDL_Color));
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
888 convert->format->palette->ncolors = format->palette->ncolors;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
889 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
890
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
891 /* Save the original surface color key and alpha */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
892 surface_flags = surface->flags;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
893 if ((surface_flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
894 /* Convert colourkeyed surfaces to RGBA if requested */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
895 if ((flags & SDL_SRCCOLORKEY) != SDL_SRCCOLORKEY && format->Amask) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
896 surface_flags &= ~SDL_SRCCOLORKEY;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
897 } else {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
898 colorkey = surface->format->colorkey;
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
899 SDL_SetColorKey(surface, 0, 0);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
900 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
901 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
902 if ((surface_flags & SDL_SRCALPHA) == SDL_SRCALPHA) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
903 /* Copy over the alpha channel to RGBA if requested */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
904 if (format->Amask) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
905 surface->flags &= ~SDL_SRCALPHA;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
906 } else {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
907 alpha = surface->format->alpha;
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
908 SDL_SetAlpha(surface, 0, 0);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
909 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
910 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
911
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
912 /* Copy over the image data */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
913 bounds.x = 0;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
914 bounds.y = 0;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
915 bounds.w = surface->w;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
916 bounds.h = surface->h;
1668
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Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
917 SDL_LowerBlit(surface, &bounds, convert, &bounds);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
918
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
919 /* Clean up the original surface, and update converted surface */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
920 if (convert != NULL) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
921 SDL_SetClipRect(convert, &surface->clip_rect);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
922 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
923 if ((surface_flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
924 Uint32 cflags = surface_flags & (SDL_SRCCOLORKEY | SDL_RLEACCELOK);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
925 if (convert != NULL) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
926 Uint8 keyR, keyG, keyB;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
927
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
928 SDL_GetRGB(colorkey, surface->format, &keyR, &keyG, &keyB);
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
929 SDL_SetColorKey(convert, cflags | (flags & SDL_RLEACCELOK),
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
930 SDL_MapRGB(convert->format, keyR, keyG, keyB));
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
931 }
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
932 SDL_SetColorKey(surface, cflags, colorkey);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
933 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
934 if ((surface_flags & SDL_SRCALPHA) == SDL_SRCALPHA) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
935 Uint32 aflags = surface_flags & (SDL_SRCALPHA | SDL_RLEACCELOK);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
936 if (convert != NULL) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
937 SDL_SetAlpha(convert, aflags | (flags & SDL_RLEACCELOK), alpha);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
938 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
939 if (format->Amask) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
940 surface->flags |= SDL_SRCALPHA;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
941 } else {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
942 SDL_SetAlpha(surface, aflags, alpha);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
943 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
944 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
945
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
946 /* We're ready to go! */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
947 return (convert);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
948 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
949
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
950 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
951 * Free a surface created by the above function.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
952 */
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
953 void
1668
4da1ee79c9af more tweaking indent options
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parents: 1666
diff changeset
954 SDL_FreeSurface(SDL_Surface * surface)
0
74212992fb08 Initial revision
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parents:
diff changeset
955 {
1666
6e7ec5cb83c3 The dummy video driver compiles. :)
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
956 if (surface == NULL) {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
957 return;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
958 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
959 if (--surface->refcount > 0) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
960 return;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
961 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
962 while (surface->locked > 0) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
963 SDL_UnlockSurface(surface);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
964 }
1672
8e754b82cecc Updated SDL_Surface code for software-only access, fixed some build errors
Sam Lantinga <slouken@libsdl.org>
parents: 1670
diff changeset
965 if (surface->flags & SDL_RLEACCEL) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
966 SDL_UnRLESurface(surface, 0);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
967 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
968 if (surface->format) {
1683
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
969 SDL_SetSurfacePalette(surface, NULL);
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
970 SDL_FreeFormat(surface->format);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
971 surface->format = NULL;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
972 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
973 if (surface->map != NULL) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
974 SDL_FreeBlitMap(surface->map);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
975 surface->map = NULL;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
976 }
1672
8e754b82cecc Updated SDL_Surface code for software-only access, fixed some build errors
Sam Lantinga <slouken@libsdl.org>
parents: 1670
diff changeset
977 /* Should we destroy the texture too?
1683
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
978 if (surface->textureID) {
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
979 SDL_DestroyTexture(surface->textureID);
1672
8e754b82cecc Updated SDL_Surface code for software-only access, fixed some build errors
Sam Lantinga <slouken@libsdl.org>
parents: 1670
diff changeset
980 }
8e754b82cecc Updated SDL_Surface code for software-only access, fixed some build errors
Sam Lantinga <slouken@libsdl.org>
parents: 1670
diff changeset
981 */
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
982 if (surface->pixels && ((surface->flags & SDL_PREALLOC) != SDL_PREALLOC)) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
983 SDL_free(surface->pixels);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
984 }
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
985 SDL_free(surface);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
986 #ifdef CHECK_LEAKS
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
987 --surfaces_allocated;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
988 #endif
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
989 }
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
990
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
991 /* vi: set ts=4 sw=4 expandtab: */