Mercurial > sdl-ios-xcode

annotate src/video/SDL_surface.c @ 1720:a1ebb17f9c52 SDL-1.3

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Cleaned up a bunch of warnings, started adding Win32 event support
author Sam Lantinga <slouken@libsdl.org>
date Fri, 30 Jun 2006 05:42:49 +0000
parents 396a35389351
children 6c63fc2bd986
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 *surface;
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43
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44 /* FIXME!! */
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45 /* Make sure the size requested doesn't overflow our datatypes */
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46 /* Next time I write a library like SDL, I'll use int for size. :) */
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47 if (width >= 16384 || height >= 65536) {
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48 SDL_SetError("Width or height is too large");
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49 return NULL;
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50 }
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51
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52 /* Allocate the surface */
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53 surface = (SDL_Surface *) SDL_malloc(sizeof(*surface));
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54 if (surface == NULL) {
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55 SDL_OutOfMemory();
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56 return NULL;
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57 }
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58 SDL_zerop(surface);
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59
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60 surface->format = SDL_AllocFormat(depth, Rmask, Gmask, Bmask, Amask);
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61 if (!surface->format) {
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62 SDL_FreeSurface(surface);
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63 return NULL;
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64 }
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65 if (Amask) {
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66 surface->flags |= SDL_SRCALPHA;
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67 }
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68 surface->w = width;
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69 surface->h = height;
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70 surface->pitch = SDL_CalculatePitch(surface);
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71 SDL_SetClipRect(surface, NULL);
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72
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73 if (surface->format->BitsPerPixel <= 8) {
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74 SDL_Palette *palette =
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75 SDL_AllocPalette((1 << surface->format->BitsPerPixel));
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76 if (!palette) {
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77 SDL_FreeSurface(surface);
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78 return NULL;
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79 }
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80 if (Rmask || Bmask || Gmask) {
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81 const SDL_PixelFormat *format = surface->format;
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82
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83 /* create palette according to masks */
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84 int i;
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85 int Rm = 0, Gm = 0, Bm = 0;
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86 int Rw = 0, Gw = 0, Bw = 0;
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87
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88 if (Rmask) {
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89 Rw = 8 - format->Rloss;
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90 for (i = format->Rloss; i > 0; i -= Rw)
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91 Rm |= 1 << i;
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92 }
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93 if (Gmask) {
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94 Gw = 8 - format->Gloss;
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95 for (i = format->Gloss; i > 0; i -= Gw)
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96 Gm |= 1 << i;
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97 }
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98 if (Bmask) {
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99 Bw = 8 - format->Bloss;
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100 for (i = format->Bloss; i > 0; i -= Bw)
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101 Bm |= 1 << i;
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102 }
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103 for (i = 0; i < palette->ncolors; ++i) {
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104 int r, g, b;
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105 r = (i & Rmask) >> format->Rshift;
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106 r = (r << format->Rloss) | ((r * Rm) >> Rw);
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107 palette->colors[i].r = r;
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108
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109 g = (i & Gmask) >> format->Gshift;
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110 g = (g << format->Gloss) | ((g * Gm) >> Gw);
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111 palette->colors[i].g = g;
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112
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113 b = (i & Bmask) >> format->Bshift;
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114 b = (b << format->Bloss) | ((b * Bm) >> Bw);
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115 palette->colors[i].b = b;
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116 }
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117 } else if (palette->ncolors == 2) {
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118 /* Create a black and white bitmap palette */
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119 palette->colors[0].r = 0xFF;
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120 palette->colors[0].g = 0xFF;
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121 palette->colors[0].b = 0xFF;
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122 palette->colors[1].r = 0x00;
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123 palette->colors[1].g = 0x00;
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124 palette->colors[1].b = 0x00;
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125 }
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126 SDL_SetSurfacePalette(surface, palette);
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127 SDL_FreePalette(palette);
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128 }
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129
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130 /* Get the pixels */
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131 if (surface->w && surface->h) {
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132 surface->pixels = SDL_malloc(surface->h * surface->pitch);
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133 if (!surface->pixels) {
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134 SDL_FreeSurface(surface);
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135 SDL_OutOfMemory();
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136 return NULL;
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137 }
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138 /* This is important for bitmaps */
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139 SDL_memset(surface->pixels, 0, surface->h * surface->pitch);
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140 }
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141
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142 /* Allocate an empty mapping */
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diff changeset
143 surface->map = SDL_AllocBlitMap();
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144 if (!surface->map) {
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145 SDL_FreeSurface(surface);
1683
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146 return NULL;
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147 }
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148 SDL_FormatChanged(surface);
0
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149
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150 /* The surface is ready to go */
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151 surface->refcount = 1;
0
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152 #ifdef CHECK_LEAKS
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153 ++surfaces_allocated;
0
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diff changeset
154 #endif
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155 return surface;
0
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156 }
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157
0
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158 /*
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159 * Create an RGB surface from an existing memory buffer
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160 */
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161 SDL_Surface *
1668
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162 SDL_CreateRGBSurfaceFrom(void *pixels,
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diff changeset
163 int width, int height, int depth, int pitch,
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164 Uint32 Rmask, Uint32 Gmask, Uint32 Bmask,
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165 Uint32 Amask)
0
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166 {
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167 SDL_Surface *surface;
0
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168
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169 surface =
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170 SDL_CreateRGBSurface(0, 0, 0, depth, Rmask, Gmask, Bmask, Amask);
1662
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171 if (surface != NULL) {
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172 surface->flags |= SDL_PREALLOC;
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173 surface->pixels = pixels;
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174 surface->w = width;
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diff changeset
175 surface->h = height;
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176 surface->pitch = pitch;
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177 SDL_SetClipRect(surface, NULL);
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178 }
1670
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diff changeset
179 return surface;
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180 }
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diff changeset
181
eef792d31de8 Work in progress. :)
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diff changeset
182 SDL_Surface *
eef792d31de8 Work in progress. :)
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183 SDL_CreateRGBSurfaceFromTexture(SDL_TextureID textureID)
eef792d31de8 Work in progress. :)
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diff changeset
184 {
eef792d31de8 Work in progress. :)
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diff changeset
185 SDL_Surface *surface;
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diff changeset
186 Uint32 format;
eef792d31de8 Work in progress. :)
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diff changeset
187 int w, h;
eef792d31de8 Work in progress. :)
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diff changeset
188 int bpp;
eef792d31de8 Work in progress. :)
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diff changeset
189 Uint32 Rmask, Gmask, Bmask, Amask;
1678
90bf530ced8e SDL_SetVideoMode() compiles now...
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diff changeset
190 void *pixels;
90bf530ced8e SDL_SetVideoMode() compiles now...
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191 int pitch;
1670
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diff changeset
192
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diff changeset
193 if (SDL_QueryTexture(textureID, &format, NULL, &w, &h) < 0) {
eef792d31de8 Work in progress. :)
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diff changeset
194 return NULL;
eef792d31de8 Work in progress. :)
Sam Lantinga <slouken@libsdl.org>
parents: 1668
diff changeset
195 }
eef792d31de8 Work in progress. :)
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diff changeset
196
eef792d31de8 Work in progress. :)
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diff changeset
197 if (!SDL_PixelFormatEnumToMasks
eef792d31de8 Work in progress. :)
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diff changeset
198 (format, &bpp, &Rmask, &Gmask, &Bmask, &Amask)) {
eef792d31de8 Work in progress. :)
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diff changeset
199 SDL_SetError("Unknown texture format");
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diff changeset
200 return NULL;
eef792d31de8 Work in progress. :)
Sam Lantinga <slouken@libsdl.org>
parents: 1668
diff changeset
201 }
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diff changeset
202
1678
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diff changeset
203 if (SDL_QueryTexturePixels(textureID, &pixels, &pitch) == 0) {
90bf530ced8e SDL_SetVideoMode() compiles now...
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diff changeset
204 surface =
90bf530ced8e SDL_SetVideoMode() compiles now...
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diff changeset
205 SDL_CreateRGBSurfaceFrom(pixels, w, h, bpp, pitch, Rmask, Gmask,
90bf530ced8e SDL_SetVideoMode() compiles now...
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diff changeset
206 Bmask, Amask);
90bf530ced8e SDL_SetVideoMode() compiles now...
Sam Lantinga <slouken@libsdl.org>
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diff changeset
207 } else {
90bf530ced8e SDL_SetVideoMode() compiles now...
Sam Lantinga <slouken@libsdl.org>
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diff changeset
208 surface =
90bf530ced8e SDL_SetVideoMode() compiles now...
Sam Lantinga <slouken@libsdl.org>
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diff changeset
209 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
210 if (surface) {
90bf530ced8e SDL_SetVideoMode() compiles now...
Sam Lantinga <slouken@libsdl.org>
parents: 1672
diff changeset
211 surface->flags |= SDL_HWSURFACE;
90bf530ced8e SDL_SetVideoMode() compiles now...
Sam Lantinga <slouken@libsdl.org>
parents: 1672
diff changeset
212 surface->w = w;
90bf530ced8e SDL_SetVideoMode() compiles now...
Sam Lantinga <slouken@libsdl.org>
parents: 1672
diff changeset
213 surface->h = h;
90bf530ced8e SDL_SetVideoMode() compiles now...
Sam Lantinga <slouken@libsdl.org>
parents: 1672
diff changeset
214 SDL_SetClipRect(surface, NULL);
90bf530ced8e SDL_SetVideoMode() compiles now...
Sam Lantinga <slouken@libsdl.org>
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diff changeset
215 }
1670
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diff changeset
216 }
1683
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
217 if (surface) {
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
218 surface->textureID = textureID;
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
219 }
1678
90bf530ced8e SDL_SetVideoMode() compiles now...
Sam Lantinga <slouken@libsdl.org>
parents: 1672
diff changeset
220
1670
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diff changeset
221 return surface;
eef792d31de8 Work in progress. :)
Sam Lantinga <slouken@libsdl.org>
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diff changeset
222 }
eef792d31de8 Work in progress. :)
Sam Lantinga <slouken@libsdl.org>
parents: 1668
diff changeset
223
1683
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
224 static int
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
225 SDL_SurfacePaletteChanged(void *userdata, SDL_Palette * palette)
1670
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parents: 1668
diff changeset
226 {
1683
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
227 SDL_Surface *surface = (SDL_Surface *) userdata;
1670
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diff changeset
228
1683
396a35389351 Finished palettized display handling.
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diff changeset
229 if (surface->textureID) {
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
230 if (SDL_SetTexturePalette
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
231 (surface->textureID, palette->colors, 0, palette->ncolors) < 0) {
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
232 SDL_GetTexturePalette(surface->textureID, palette->colors, 0,
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
233 palette->ncolors);
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
234 return -1;
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
235 }
1670
eef792d31de8 Work in progress. :)
Sam Lantinga <slouken@libsdl.org>
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diff changeset
236 }
eef792d31de8 Work in progress. :)
Sam Lantinga <slouken@libsdl.org>
parents: 1668
diff changeset
237 SDL_FormatChanged(surface);
eef792d31de8 Work in progress. :)
Sam Lantinga <slouken@libsdl.org>
parents: 1668
diff changeset
238
1683
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
239 return 0;
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
240 }
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 int
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
243 SDL_SetSurfacePalette(SDL_Surface * surface, SDL_Palette * palette)
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
244 {
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
245 if (!surface || !surface->format) {
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
246 SDL_SetError("SDL_SetSurfacePalette() passed a NULL surface");
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
247 return -1;
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
248 }
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 if (palette && palette->ncolors != (1 << surface->format->BitsPerPixel)) {
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
251 SDL_SetError
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
252 ("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
253 return -1;
1670
eef792d31de8 Work in progress. :)
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diff changeset
254 }
1683
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
255
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
256 if (surface->format->palette == palette) {
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
257 return 0;
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
258 }
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 if (surface->format->palette) {
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
261 SDL_DelPaletteWatch(surface->format->palette,
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
262 SDL_SurfacePaletteChanged, surface);
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
263 }
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 surface->format->palette = palette;
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
266
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
267 if (surface->format->palette) {
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
268 SDL_AddPaletteWatch(surface->format->palette,
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
269 SDL_SurfacePaletteChanged, surface);
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
270 }
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
271 return 0;
0
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diff changeset
272 }
1662
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diff changeset
273
0
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diff changeset
274 /*
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parents:
diff changeset
275 * Set the color key in a blittable surface
74212992fb08 Initial revision
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diff changeset
276 */
1662
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parents: 1456
diff changeset
277 int
1668
4da1ee79c9af more tweaking indent options
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diff changeset
278 SDL_SetColorKey(SDL_Surface * surface, Uint32 flag, Uint32 key)
0
74212992fb08 Initial revision
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parents:
diff changeset
279 {
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
280 /* 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
281 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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diff changeset
282 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
283 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
284 } 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
285 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
286 }
782fd950bd46 Revamp of 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
287 } 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
288 flag = 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
289 }
0
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290
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291 /* Optimize away operations that don't change anything */
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292 if ((flag == (surface->flags & (SDL_SRCCOLORKEY | SDL_RLEACCELOK))) &&
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293 (key == surface->format->colorkey)) {
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294 return (0);
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295 }
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296
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297 /* UnRLE surfaces before we change the colorkey */
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298 if (surface->flags & SDL_RLEACCEL) {
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299 SDL_UnRLESurface(surface, 1);
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300 }
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301
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302 if (flag) {
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303 surface->flags |= SDL_SRCCOLORKEY;
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304 surface->format->colorkey = key;
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305 if (flag & SDL_RLEACCELOK) {
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306 surface->flags |= SDL_RLEACCELOK;
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307 } else {
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308 surface->flags &= ~SDL_RLEACCELOK;
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309 }
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310 } else {
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311 surface->flags &= ~(SDL_SRCCOLORKEY | SDL_RLEACCELOK);
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312 surface->format->colorkey = 0;
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313 }
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314 SDL_InvalidateMap(surface->map);
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315 return (0);
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316 }
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317
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318 /* This function sets the alpha channel of a surface */
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319 int
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320 SDL_SetAlpha(SDL_Surface * surface, Uint32 flag, Uint8 value)
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321 {
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322 Uint32 oldflags = surface->flags;
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323 Uint32 oldalpha = surface->format->alpha;
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324
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325 /* Sanity check the flag as it gets passed in */
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326 if (flag & SDL_SRCALPHA) {
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327 if (flag & (SDL_RLEACCEL | SDL_RLEACCELOK)) {
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328 flag = (SDL_SRCALPHA | SDL_RLEACCELOK);
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329 } else {
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330 flag = SDL_SRCALPHA;
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331 }
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332 } else {
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333 flag = 0;
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334 }
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335
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336 /* Optimize away operations that don't change anything */
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337 if ((flag == (surface->flags & (SDL_SRCALPHA | SDL_RLEACCELOK))) &&
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338 (!flag || value == oldalpha)) {
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339 return (0);
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340 }
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341
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342 if (!(flag & SDL_RLEACCELOK) && (surface->flags & SDL_RLEACCEL))
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343 SDL_UnRLESurface(surface, 1);
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344
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345 if (flag) {
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346 surface->flags |= SDL_SRCALPHA;
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347 surface->format->alpha = value;
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348 if (flag & SDL_RLEACCELOK) {
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349 surface->flags |= SDL_RLEACCELOK;
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350 } else {
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351 surface->flags &= ~SDL_RLEACCELOK;
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352 }
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353 } else {
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354 surface->flags &= ~SDL_SRCALPHA;
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355 surface->format->alpha = SDL_ALPHA_OPAQUE;
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356 }
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357 /*
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358 * The representation for software surfaces is independent of
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359 * per-surface alpha, so no need to invalidate the blit mapping
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360 * if just the alpha value was changed. (If either is 255, we still
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361 * need to invalidate.)
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362 */
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363 if (oldflags != surface->flags
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364 || (((oldalpha + 1) ^ (value + 1)) & 0x100)) {
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365 SDL_InvalidateMap(surface->map);
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366 }
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367 return (0);
0
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368 }
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369
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370 int
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371 SDL_SetAlphaChannel(SDL_Surface * surface, Uint8 value)
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diff changeset
372 {
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373 int row, col;
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374 int offset;
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375 Uint8 *buf;
431
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
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diff changeset
376
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377 if ((surface->format->Amask != 0xFF000000) &&
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378 (surface->format->Amask != 0x000000FF)) {
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379 SDL_SetError("Unsupported surface alpha mask format");
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380 return -1;
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diff changeset
381 }
431
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diff changeset
382 #if SDL_BYTEORDER == SDL_LIL_ENDIAN
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383 if (surface->format->Amask == 0xFF000000) {
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diff changeset
384 offset = 3;
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385 } else {
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diff changeset
386 offset = 0;
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diff changeset
387 }
431
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diff changeset
388 #else
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diff changeset
389 if (surface->format->Amask == 0xFF000000) {
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diff changeset
390 offset = 0;
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diff changeset
391 } else {
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diff changeset
392 offset = 3;
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diff changeset
393 }
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diff changeset
394 #endif /* Byte ordering */
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
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diff changeset
395
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396 /* Quickly set the alpha channel of an RGBA or ARGB surface */
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diff changeset
397 if (SDL_MUSTLOCK(surface)) {
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diff changeset
398 if (SDL_LockSurface(surface) < 0) {
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diff changeset
399 return -1;
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diff changeset
400 }
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diff changeset
401 }
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diff changeset
402 row = surface->h;
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diff changeset
403 while (row--) {
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diff changeset
404 col = surface->w;
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diff changeset
405 buf = (Uint8 *) surface->pixels + row * surface->pitch + offset;
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diff changeset
406 while (col--) {
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diff changeset
407 *buf = value;
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diff changeset
408 buf += 4;
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diff changeset
409 }
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diff changeset
410 }
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diff changeset
411 if (SDL_MUSTLOCK(surface)) {
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diff changeset
412 SDL_UnlockSurface(surface);
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413 }
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
414 return 0;
431
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
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parents: 422
diff changeset
415 }
0
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parents:
diff changeset
416
74212992fb08 Initial revision
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parents:
diff changeset
417 /*
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parents:
diff changeset
418 * A function to calculate the intersection of two rectangles:
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diff changeset
419 * return true if the rectangles intersect, false otherwise
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diff changeset
420 */
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diff changeset
421 static __inline__ SDL_bool
1668
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422 SDL_IntersectRect(const SDL_Rect * A, const SDL_Rect * B,
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423 SDL_Rect * intersection)
0
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diff changeset
424 {
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diff changeset
425 int Amin, Amax, Bmin, Bmax;
0
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diff changeset
426
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diff changeset
427 /* Horizontal 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
428 Amin = A->x;
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429 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
430 Bmin = B->x;
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431 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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432 if (Bmin > Amin)
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diff changeset
433 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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434 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.
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diff changeset
435 if (Bmax < Amax)
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diff changeset
436 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
437 intersection->w = Amax - Amin > 0 ? Amax - Amin : 0;
0
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parents:
diff changeset
438
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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
439 /* 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
440 Amin = A->y;
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441 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
442 Bmin = B->y;
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443 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.
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diff changeset
444 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
445 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
446 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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447 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
448 Amax = Bmax;
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diff changeset
449 intersection->h = Amax - Amin > 0 ? Amax - Amin : 0;
0
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diff changeset
450
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diff changeset
451 return (intersection->w && intersection->h);
0
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diff changeset
452 }
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diff changeset
453
0
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diff changeset
454 /*
74212992fb08 Initial revision
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parents:
diff changeset
455 * Set the clipping rectangle for a blittable surface
74212992fb08 Initial revision
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parents:
diff changeset
456 */
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diff changeset
457 SDL_bool
1668
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458 SDL_SetClipRect(SDL_Surface * surface, const SDL_Rect * rect)
0
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diff changeset
459 {
1662
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diff changeset
460 SDL_Rect full_rect;
0
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diff changeset
461
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diff changeset
462 /* 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
463 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
464 return SDL_FALSE;
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diff changeset
465 }
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
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 /* 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.
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diff changeset
468 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.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
469 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
470 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.
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parents: 1456
diff changeset
471 full_rect.h = surface->h;
0
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diff changeset
472
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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
473 /* 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
474 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
475 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
476 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
477 }
1668
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diff changeset
478 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>
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diff changeset
479 }
0
74212992fb08 Initial revision
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parents:
diff changeset
480
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
481 void
1668
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diff changeset
482 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
483 {
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 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
485 *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>
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diff changeset
486 }
0
74212992fb08 Initial revision
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parents:
diff changeset
487 }
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
488
0
74212992fb08 Initial revision
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parents:
diff changeset
489 /*
74212992fb08 Initial revision
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parents:
diff changeset
490 * Set up a blit between two surfaces -- split into three parts:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
491 * The upper part, SDL_UpperBlit(), performs clipping and rectangle
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
492 * verification. The lower part is a pointer to a low level
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
493 * accelerated blitting function.
74212992fb08 Initial revision
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parents:
diff changeset
494 *
74212992fb08 Initial revision
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parents:
diff changeset
495 * These parts are separated out and each used internally by this
74212992fb08 Initial revision
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parents:
diff changeset
496 * library in the optimimum places. They are exported so that if
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
497 * you know exactly what you are doing, you can optimize your code
74212992fb08 Initial revision
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parents:
diff changeset
498 * by calling the one(s) you need.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
499 */
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
500 int
1668
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Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
501 SDL_LowerBlit(SDL_Surface * src, SDL_Rect * srcrect,
4da1ee79c9af more tweaking indent options
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parents: 1666
diff changeset
502 SDL_Surface * dst, SDL_Rect * dstrect)
0
74212992fb08 Initial revision
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parents:
diff changeset
503 {
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
504 /* 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
505 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
506 (src->map->dst->format_version != src->map->format_version)) {
1668
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Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
507 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
508 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
509 }
782fd950bd46 Revamp of the video system in 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 }
1672
8e754b82cecc Updated SDL_Surface code for software-only access, fixed some build errors
Sam Lantinga <slouken@libsdl.org>
parents: 1670
diff changeset
511 return (src->map->sw_blit(src, srcrect, dst, dstrect));
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
512 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
513
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
514
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
515 int
1668
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diff changeset
516 SDL_UpperBlit(SDL_Surface * src, SDL_Rect * srcrect,
4da1ee79c9af more tweaking indent options
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parents: 1666
diff changeset
517 SDL_Surface * dst, SDL_Rect * dstrect)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
518 {
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
519 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.
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parents: 1456
diff changeset
520 int srcx, srcy, w, h;
0
74212992fb08 Initial revision
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parents:
diff changeset
521
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
522 /* 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
523 if (!src || !dst) {
1668
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Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
524 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
525 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
526 }
782fd950bd46 Revamp of the video system in 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 if (src->locked || dst->locked) {
1668
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parents: 1666
diff changeset
528 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
529 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
530 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
531
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
532 /* 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
533 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
534 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
535 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
536 }
782fd950bd46 Revamp of the video system in 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 /* 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
539 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
540 int maxw, maxh;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
541
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
542 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
543 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
544 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
545 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
546 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
547 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
548 }
782fd950bd46 Revamp of the video system in 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 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
550 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
551 w = maxw;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
552
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
553 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
554 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
555 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
556 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
557 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
558 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
559 }
782fd950bd46 Revamp of the video system in 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 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
561 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
562 h = maxh;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
563
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
564 } 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
565 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
566 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
567 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
568 }
782fd950bd46 Revamp of the video system in 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 /* 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
571 {
782fd950bd46 Revamp of the video system in 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 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
573 int dx, dy;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
574
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
575 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
576 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
577 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
578 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
579 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
580 }
782fd950bd46 Revamp of the video system in 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 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
582 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
583 w -= dx;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
584
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
585 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
586 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
587 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
588 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
589 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
590 }
782fd950bd46 Revamp of the video system in 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 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
592 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
593 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
594 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
595
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
596 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
597 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
598 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
599 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
600 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
601 sr.h = dstrect->h = h;
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
602 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
603 }
782fd950bd46 Revamp of the video system in 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 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
605 return 0;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
606 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
607
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
608 static int
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
609 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
610 {
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
611 /* FIXME: We have to worry about packing order.. *sigh* */
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
612 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
613 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
614 }
058d47b7a3b4 Return an error with color fills on less than 8 bpp surfaces.
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
615
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
616 static int
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
617 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
618 {
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
619 /* FIXME: We have to worry about packing order.. *sigh* */
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
620 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
621 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
622 }
058d47b7a3b4 Return an error with color fills on less than 8 bpp surfaces.
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
623
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
624 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
625 * This function performs a fast fill of the given rectangle with 'color'
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
626 */
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
627 int
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
628 SDL_FillRect(SDL_Surface * dst, SDL_Rect * dstrect, Uint32 color)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
629 {
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
630 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
631 Uint8 *row;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
632
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
633 /* 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
634 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
635 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
636 case 1:
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
637 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
638 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
639 case 4:
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
640 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
641 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
642 default:
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
643 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
644 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
645 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
646 }
782fd950bd46 Revamp of the video system in 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 }
532
058d47b7a3b4 Return an error with color fills on less than 8 bpp surfaces.
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
648
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
649 /* 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
650 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
651 /* Perform clipping */
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
652 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
653 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
654 }
782fd950bd46 Revamp of the video system in 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 } 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
656 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
657 }
782fd950bd46 Revamp of the video system in 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 /* Perform software fill */
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
660 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
661 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
662 }
782fd950bd46 Revamp of the video system in 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 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
664 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
665 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
666 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
667 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
668 && !(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
669 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
670 for (y = dstrect->h; y; --y) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
671 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
672 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
673 }
782fd950bd46 Revamp of the video system in 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 } else {
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
675 #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
676 /*
782fd950bd46 Revamp of the video system in 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 * 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
678 * 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
679 * 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
680 * 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
681 */
1672
8e754b82cecc Updated SDL_Surface code for software-only access, fixed some build errors
Sam Lantinga <slouken@libsdl.org>
parents: 1670
diff changeset
682 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
683 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
684 /*
782fd950bd46 Revamp of the video system in 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 * 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
686 * 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
687 */
782fd950bd46 Revamp of the video system in 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 double fill;
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
689 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
690 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
691 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
692 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
693 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
694 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
695 double f = fill;
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
696 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
697 *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
698 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
699 }
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
700 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
701 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
702 ((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
703 ((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
704 ((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
705 ((double *) d)[3] = f;
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
706 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
707 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
708 }
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
709 n &= ~(sizeof(double) * 4 - 1);
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
710 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
711 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
712 *(double *) d = f;
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
713 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
714 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
715 }
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
716 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
717 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
718 *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
719 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
720 }
782fd950bd46 Revamp of the video system in 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 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
722 }
782fd950bd46 Revamp of the video system in 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 } 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
724 /* 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
725 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
726 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
727 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
728 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
729 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
730 *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
731 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
732 }
782fd950bd46 Revamp of the video system in 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 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
734 }
782fd950bd46 Revamp of the video system in 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 } else
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
737 #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
738 {
782fd950bd46 Revamp of the video system in 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 for (y = dstrect->h; y; y--) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
740 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
741 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
742 }
782fd950bd46 Revamp of the video system in 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 } 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
746 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
747 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
748 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
749 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
750 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
751 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
752 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
753 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
754 *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
755 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
756 }
782fd950bd46 Revamp of the video system in 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 if (n >> 1)
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
758 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
759 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
760 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
761 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
762 }
782fd950bd46 Revamp of the video system in 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 break;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
764
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
765 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
766 #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
767 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
768 #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
769 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
770 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
771 for (x = dstrect->w; x; --x) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
772 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
773 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
774 }
782fd950bd46 Revamp of the video system in 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 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
776 }
782fd950bd46 Revamp of the video system in 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 break;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
778
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
779 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
780 for (y = dstrect->h; y; --y) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
781 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
782 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
783 }
782fd950bd46 Revamp of the video system in 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 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
785 }
782fd950bd46 Revamp of the video system in 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 }
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
787 SDL_UnlockSurface(dst);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
788
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
789 /* 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
790 return (0);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
791 }
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 * Lock a surface to directly access the pixels
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
795 */
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
796 int
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
797 SDL_LockSurface(SDL_Surface * surface)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
798 {
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
799 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
800 /* 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
801 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
802 if (SDL_LockTexture
1683
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
803 (surface->textureID, NULL, 1, &surface->pixels,
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
804 &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
805 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
806 }
782fd950bd46 Revamp of the video system in 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 if (surface->flags & SDL_RLEACCEL) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
809 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
810 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
811 }
782fd950bd46 Revamp of the video system in 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 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
813
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
814 /* 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
815 ++surface->locked;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
816
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
817 /* 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
818 return (0);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
819 }
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
820
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
821 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
822 * Unlock a previously locked surface
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
823 */
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
824 void
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
825 SDL_UnlockSurface(SDL_Surface * surface)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
826 {
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
827 /* 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
828 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
829 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
830 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
831
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
832 /* 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
833 if (surface->flags & SDL_HWSURFACE) {
1683
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
834 SDL_UnlockTexture(surface->textureID);
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
835 }
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 /* Update RLE encoded surface with new data */
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
838 if ((surface->flags & SDL_RLEACCEL) == SDL_RLEACCEL) {
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
839 surface->flags &= ~SDL_RLEACCEL; /* stop lying */
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
840 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
841 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
842 }
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 * Convert a surface into the specified pixel format.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
846 */
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
847 SDL_Surface *
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
848 SDL_ConvertSurface(SDL_Surface * surface,
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
849 SDL_PixelFormat * format, Uint32 flags)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
850 {
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
851 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
852 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
853 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
854 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
855 SDL_Rect bounds;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
856
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
857 /* 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
858 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
859 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
860 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
861 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
862 (format->palette->colors[i].g != 0xFF) ||
7ae8018b2e5d Default palette entries to white, instead of black.
Sam Lantinga <slouken@libsdl.org>
parents: 1678
diff changeset
863 (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
864 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
865 }
782fd950bd46 Revamp of the video system in 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 if (i == format->palette->ncolors) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
867 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
868 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
869 }
782fd950bd46 Revamp of the video system in 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 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
871
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
872 /* Create a new surface with the desired format */
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
873 convert = SDL_CreateRGBSurface(flags,
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
874 surface->w, surface->h,
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
875 format->BitsPerPixel, format->Rmask,
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
876 format->Gmask, format->Bmask,
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
877 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
878 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
879 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
880 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
881
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
882 /* 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
883 if (format->palette && convert->format->palette) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
884 SDL_memcpy(convert->format->palette->colors,
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
885 format->palette->colors,
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
886 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
887 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
888 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
889
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
890 /* 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
891 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
892 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
893 /* 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
894 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
895 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
896 } 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
897 colorkey = surface->format->colorkey;
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
898 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
899 }
782fd950bd46 Revamp of the video system in 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 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
902 /* 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
903 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
904 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
905 } 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
906 alpha = surface->format->alpha;
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
907 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
908 }
782fd950bd46 Revamp of the video system in 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 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
910
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
911 /* 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
912 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
913 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
914 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
915 bounds.h = surface->h;
1668
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Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
916 SDL_LowerBlit(surface, &bounds, convert, &bounds);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
917
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
918 /* 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
919 if (convert != NULL) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
920 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
921 }
782fd950bd46 Revamp of the video system in 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 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
923 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
924 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
925 Uint8 keyR, keyG, keyB;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
926
1668
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Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
927 SDL_GetRGB(colorkey, surface->format, &keyR, &keyG, &keyB);
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
928 SDL_SetColorKey(convert, cflags | (flags & SDL_RLEACCELOK),
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
929 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
930 }
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
931 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
932 }
782fd950bd46 Revamp of the video system in 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 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
934 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
935 if (convert != NULL) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
936 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
937 }
782fd950bd46 Revamp of the video system in 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 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
939 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
940 } else {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
941 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
942 }
782fd950bd46 Revamp of the video system in 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 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
944
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
945 /* 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
946 return (convert);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
947 }
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 * Free a surface created by the above function.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
951 */
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
952 void
1668
4da1ee79c9af more tweaking indent options
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parents: 1666
diff changeset
953 SDL_FreeSurface(SDL_Surface * surface)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
954 {
1666
6e7ec5cb83c3 The dummy video driver compiles. :)
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
955 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
956 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
957 }
782fd950bd46 Revamp of the video system in 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 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
959 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
960 }
782fd950bd46 Revamp of the video system in 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 while (surface->locked > 0) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
962 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
963 }
1672
8e754b82cecc Updated SDL_Surface code for software-only access, fixed some build errors
Sam Lantinga <slouken@libsdl.org>
parents: 1670
diff changeset
964 if (surface->flags & SDL_RLEACCEL) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
965 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
966 }
782fd950bd46 Revamp of the video system in 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 if (surface->format) {
1683
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
968 SDL_SetSurfacePalette(surface, NULL);
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
969 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
970 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
971 }
782fd950bd46 Revamp of the video system in 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 if (surface->map != NULL) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
973 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
974 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
975 }
1672
8e754b82cecc Updated SDL_Surface code for software-only access, fixed some build errors
Sam Lantinga <slouken@libsdl.org>
parents: 1670
diff changeset
976 /* Should we destroy the texture too?
1683
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
977 if (surface->textureID) {
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
978 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
979 }
8e754b82cecc Updated SDL_Surface code for software-only access, fixed some build errors
Sam Lantinga <slouken@libsdl.org>
parents: 1670
diff changeset
980 */
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
981 if (surface->pixels && ((surface->flags & SDL_PREALLOC) != SDL_PREALLOC)) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
982 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
983 }
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1666
diff changeset
984 SDL_free(surface);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
985 #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
986 --surfaces_allocated;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
987 #endif
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
988 }
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
989
782fd950bd46 Revamp of the video system in 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 /* vi: set ts=4 sw=4 expandtab: */