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annotate src/video/SDL_surface.c @ 5284:96a22141cf86 tip

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Changed output directory of Universal libSDL.a for iOS to respect build configurations. Template generator was updated to reflect these changes as well.
author Eric Wing <ewing . public |-at-| gmail . com>
date Sat, 12 Feb 2011 21:52:30 -0800
parents b530ef003506
children
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2011 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
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31
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32 /* Public routines */
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33 /*
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34 * Create an empty RGB surface of the appropriate depth
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35 */
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36 SDL_Surface *
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37 SDL_CreateRGBSurface(Uint32 flags,
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38 int width, int height, int depth,
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39 Uint32 Rmask, Uint32 Gmask, Uint32 Bmask, Uint32 Amask)
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40 {
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41 SDL_Surface *surface;
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42
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43 /* The flags are no longer used, make the compiler happy */
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44 (void)flags;
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45
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46 /* Allocate the surface */
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47 surface = (SDL_Surface *) SDL_calloc(1, sizeof(*surface));
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48 if (surface == NULL) {
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49 SDL_OutOfMemory();
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50 return NULL;
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51 }
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52
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53 surface->format = SDL_AllocFormat(depth, Rmask, Gmask, Bmask, Amask);
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54 if (!surface->format) {
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55 SDL_FreeSurface(surface);
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56 return NULL;
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57 }
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58 surface->w = width;
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59 surface->h = height;
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60 surface->pitch = SDL_CalculatePitch(surface);
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61 SDL_SetClipRect(surface, NULL);
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62
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63 if (surface->format->BitsPerPixel <= 8) {
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64 SDL_Palette *palette =
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65 SDL_AllocPalette((1 << surface->format->BitsPerPixel));
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66 if (!palette) {
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67 SDL_FreeSurface(surface);
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68 return NULL;
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69 }
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70 if (Rmask || Bmask || Gmask) {
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71 const SDL_PixelFormat *format = surface->format;
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72
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73 /* create palette according to masks */
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74 int i;
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75 int Rm = 0, Gm = 0, Bm = 0;
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76 int Rw = 0, Gw = 0, Bw = 0;
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77
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78 if (Rmask) {
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79 Rw = 8 - format->Rloss;
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80 for (i = format->Rloss; i > 0; i -= Rw)
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81 Rm |= 1 << i;
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82 }
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83 if (Gmask) {
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84 Gw = 8 - format->Gloss;
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85 for (i = format->Gloss; i > 0; i -= Gw)
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86 Gm |= 1 << i;
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87 }
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88 if (Bmask) {
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89 Bw = 8 - format->Bloss;
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90 for (i = format->Bloss; i > 0; i -= Bw)
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91 Bm |= 1 << i;
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92 }
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93 for (i = 0; i < palette->ncolors; ++i) {
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94 int r, g, b;
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95 r = (i & Rmask) >> format->Rshift;
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96 r = (r << format->Rloss) | ((r * Rm) >> Rw);
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97 palette->colors[i].r = r;
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98
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99 g = (i & Gmask) >> format->Gshift;
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100 g = (g << format->Gloss) | ((g * Gm) >> Gw);
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101 palette->colors[i].g = g;
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102
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103 b = (i & Bmask) >> format->Bshift;
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104 b = (b << format->Bloss) | ((b * Bm) >> Bw);
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105 palette->colors[i].b = b;
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106 }
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107 } else if (palette->ncolors == 2) {
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108 /* Create a black and white bitmap palette */
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109 palette->colors[0].r = 0xFF;
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110 palette->colors[0].g = 0xFF;
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111 palette->colors[0].b = 0xFF;
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112 palette->colors[1].r = 0x00;
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113 palette->colors[1].g = 0x00;
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114 palette->colors[1].b = 0x00;
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115 }
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116 SDL_SetSurfacePalette(surface, palette);
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117 SDL_FreePalette(palette);
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118 }
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119
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120 /* Get the pixels */
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121 if (surface->w && surface->h) {
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122 surface->pixels = SDL_malloc(surface->h * surface->pitch);
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123 if (!surface->pixels) {
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124 SDL_FreeSurface(surface);
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125 SDL_OutOfMemory();
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126 return NULL;
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127 }
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128 /* This is important for bitmaps */
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129 SDL_memset(surface->pixels, 0, surface->h * surface->pitch);
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130 }
0
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diff changeset
131
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diff changeset
132 /* Allocate an empty mapping */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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133 surface->map = SDL_AllocBlitMap();
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
134 if (!surface->map) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
135 SDL_FreeSurface(surface);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
136 return NULL;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
137 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
138 SDL_FormatChanged(surface);
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diff changeset
139
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diff changeset
140 /* By default surface with an alpha mask are set up for blending */
c785543d1843 Okay, still some bugs, but everything builds again...
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diff changeset
141 if (Amask) {
2884
9dde605c7540 Date: Fri, 19 Dec 2008 20:17:35 +0100
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parents: 2859
diff changeset
142 SDL_SetSurfaceBlendMode(surface, SDL_BLENDMODE_BLEND);
2267
c785543d1843 Okay, still some bugs, but everything builds again...
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143 }
c785543d1843 Okay, still some bugs, but everything builds again...
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diff changeset
144
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c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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145 /* The surface is ready to go */
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146 surface->refcount = 1;
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diff changeset
147 return surface;
0
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diff changeset
148 }
1895
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149
0
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150 /*
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151 * Create an RGB surface from an existing memory buffer
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152 */
1895
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153 SDL_Surface *
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154 SDL_CreateRGBSurfaceFrom(void *pixels,
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155 int width, int height, int depth, int pitch,
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156 Uint32 Rmask, Uint32 Gmask, Uint32 Bmask,
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diff changeset
157 Uint32 Amask)
0
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158 {
1895
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159 SDL_Surface *surface;
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diff changeset
160
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161 surface =
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162 SDL_CreateRGBSurface(0, 0, 0, depth, Rmask, Gmask, Bmask, Amask);
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163 if (surface != NULL) {
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164 surface->flags |= SDL_PREALLOC;
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165 surface->pixels = pixels;
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166 surface->w = width;
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diff changeset
167 surface->h = height;
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168 surface->pitch = pitch;
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169 SDL_SetClipRect(surface, NULL);
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170 }
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171 return surface;
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172 }
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173
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
174 static int
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diff changeset
175 SDL_SurfacePaletteChanged(void *userdata, SDL_Palette * palette)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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176 {
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diff changeset
177 SDL_Surface *surface = (SDL_Surface *) userdata;
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178
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diff changeset
179 SDL_FormatChanged(surface);
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diff changeset
180
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181 return 0;
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diff changeset
182 }
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diff changeset
183
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diff changeset
184 int
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diff changeset
185 SDL_SetSurfacePalette(SDL_Surface * surface, SDL_Palette * palette)
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186 {
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diff changeset
187 if (!surface || !surface->format) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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188 SDL_SetError("SDL_SetSurfacePalette() passed a NULL surface");
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189 return -1;
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diff changeset
190 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
191
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
192 if (palette && palette->ncolors != (1 << surface->format->BitsPerPixel)) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
193 SDL_SetError
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diff changeset
194 ("SDL_SetSurfacePalette() passed a palette that doesn't match the surface format");
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195 return -1;
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diff changeset
196 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
197
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
198 if (surface->format->palette == palette) {
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199 return 0;
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diff changeset
200 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
201
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1456
diff changeset
202 if (surface->format->palette) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1456
diff changeset
203 SDL_DelPaletteWatch(surface->format->palette,
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diff changeset
204 SDL_SurfacePaletteChanged, surface);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
205 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1456
diff changeset
206
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
207 surface->format->palette = palette;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
208
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
209 if (surface->format->palette) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
210 SDL_AddPaletteWatch(surface->format->palette,
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diff changeset
211 SDL_SurfacePaletteChanged, surface);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
212 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
213 return 0;
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diff changeset
214 }
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diff changeset
215
2267
c785543d1843 Okay, still some bugs, but everything builds again...
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diff changeset
216 int
c785543d1843 Okay, still some bugs, but everything builds again...
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diff changeset
217 SDL_SetSurfaceRLE(SDL_Surface * surface, int flag)
0
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diff changeset
218 {
2267
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diff changeset
219 int flags;
0
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220
2266
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diff changeset
221 if (!surface) {
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
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diff changeset
222 return -1;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
223 }
0
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diff changeset
224
2267
c785543d1843 Okay, still some bugs, but everything builds again...
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diff changeset
225 flags = surface->map->info.flags;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
226 if (flag) {
2267
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diff changeset
227 surface->map->info.flags |= SDL_COPY_RLE_DESIRED;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
228 } else {
2267
c785543d1843 Okay, still some bugs, but everything builds again...
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diff changeset
229 surface->map->info.flags &= ~SDL_COPY_RLE_DESIRED;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
230 }
2267
c785543d1843 Okay, still some bugs, but everything builds again...
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parents: 2266
diff changeset
231 if (surface->map->info.flags != flags) {
2266
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diff changeset
232 SDL_InvalidateMap(surface->map);
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
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parents: 2260
diff changeset
233 }
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
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parents: 2260
diff changeset
234 return 0;
0
74212992fb08 Initial revision
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parents:
diff changeset
235 }
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
236
2267
c785543d1843 Okay, still some bugs, but everything builds again...
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parents: 2266
diff changeset
237 int
3560
5543db4239e6 The SDL 1.3 tests have been cleaned up not to include any 1.2 compatibility code.
Sam Lantinga <slouken@libsdl.org>
parents: 3436
diff changeset
238 SDL_SetColorKey(SDL_Surface * surface, int flag, Uint32 key)
0
74212992fb08 Initial revision
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parents:
diff changeset
239 {
2266
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diff changeset
240 int flags;
0
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diff changeset
241
2266
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parents: 2260
diff changeset
242 if (!surface) {
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
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parents: 2260
diff changeset
243 return -1;
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
244 }
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
245
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
246 if (flag & SDL_RLEACCEL) {
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
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parents: 2260
diff changeset
247 SDL_SetSurfaceRLE(surface, 1);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
248 }
0
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parents:
diff changeset
249
2266
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diff changeset
250 flags = surface->map->info.flags;
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
251 if (flag) {
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
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parents: 2260
diff changeset
252 surface->map->info.flags |= SDL_COPY_COLORKEY;
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
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parents: 2260
diff changeset
253 surface->map->info.colorkey = key;
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
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parents: 2260
diff changeset
254 } else {
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
255 surface->map->info.flags &= ~SDL_COPY_COLORKEY;
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
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parents: 2260
diff changeset
256 }
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
257 if (surface->map->info.flags != flags) {
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
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parents: 2260
diff changeset
258 SDL_InvalidateMap(surface->map);
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
259 }
2267
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2266
diff changeset
260
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2266
diff changeset
261 /* Compatibility mode */
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2266
diff changeset
262 if (surface->map->info.flags & SDL_COPY_COLORKEY) {
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2266
diff changeset
263 surface->flags |= SDL_SRCCOLORKEY;
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2266
diff changeset
264 } else {
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2266
diff changeset
265 surface->flags &= ~SDL_SRCCOLORKEY;
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2266
diff changeset
266 }
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2266
diff changeset
267
2266
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
268 return 0;
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
269 }
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
270
3103
7be21a78777e Added SDL_GetColorKey()
Sam Lantinga <slouken@libsdl.org>
parents: 3013
diff changeset
271 int
7be21a78777e Added SDL_GetColorKey()
Sam Lantinga <slouken@libsdl.org>
parents: 3013
diff changeset
272 SDL_GetColorKey(SDL_Surface * surface, Uint32 * key)
7be21a78777e Added SDL_GetColorKey()
Sam Lantinga <slouken@libsdl.org>
parents: 3013
diff changeset
273 {
7be21a78777e Added SDL_GetColorKey()
Sam Lantinga <slouken@libsdl.org>
parents: 3013
diff changeset
274 if (!surface) {
7be21a78777e Added SDL_GetColorKey()
Sam Lantinga <slouken@libsdl.org>
parents: 3013
diff changeset
275 return -1;
7be21a78777e Added SDL_GetColorKey()
Sam Lantinga <slouken@libsdl.org>
parents: 3013
diff changeset
276 }
7be21a78777e Added SDL_GetColorKey()
Sam Lantinga <slouken@libsdl.org>
parents: 3013
diff changeset
277
7be21a78777e Added SDL_GetColorKey()
Sam Lantinga <slouken@libsdl.org>
parents: 3013
diff changeset
278 if (!(surface->map->info.flags & SDL_COPY_COLORKEY)) {
7be21a78777e Added SDL_GetColorKey()
Sam Lantinga <slouken@libsdl.org>
parents: 3013
diff changeset
279 return -1;
7be21a78777e Added SDL_GetColorKey()
Sam Lantinga <slouken@libsdl.org>
parents: 3013
diff changeset
280 }
7be21a78777e Added SDL_GetColorKey()
Sam Lantinga <slouken@libsdl.org>
parents: 3013
diff changeset
281
7be21a78777e Added SDL_GetColorKey()
Sam Lantinga <slouken@libsdl.org>
parents: 3013
diff changeset
282 if (key) {
7be21a78777e Added SDL_GetColorKey()
Sam Lantinga <slouken@libsdl.org>
parents: 3013
diff changeset
283 *key = surface->map->info.colorkey;
7be21a78777e Added SDL_GetColorKey()
Sam Lantinga <slouken@libsdl.org>
parents: 3013
diff changeset
284 }
7be21a78777e Added SDL_GetColorKey()
Sam Lantinga <slouken@libsdl.org>
parents: 3013
diff changeset
285 return 0;
7be21a78777e Added SDL_GetColorKey()
Sam Lantinga <slouken@libsdl.org>
parents: 3013
diff changeset
286 }
7be21a78777e Added SDL_GetColorKey()
Sam Lantinga <slouken@libsdl.org>
parents: 3013
diff changeset
287
2785
fa1095d42a5b Fixed bug with converting colorkey surface to texture
Sam Lantinga <slouken@libsdl.org>
parents: 2735
diff changeset
288 /* This is a fairly slow function to switch from colorkey to alpha */
2787
93764fe8601a It turns out both the software and the OpenGL renderer had the same problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2786
diff changeset
289 static void
2786
Sam Lantinga <slouken@libsdl.org>
parents: 2785
diff changeset
290 SDL_ConvertColorkeyToAlpha(SDL_Surface * surface)
2785
fa1095d42a5b Fixed bug with converting colorkey surface to texture
Sam Lantinga <slouken@libsdl.org>
parents: 2735
diff changeset
291 {
2786
Sam Lantinga <slouken@libsdl.org>
parents: 2785
diff changeset
292 int x, y;
2785
fa1095d42a5b Fixed bug with converting colorkey surface to texture
Sam Lantinga <slouken@libsdl.org>
parents: 2735
diff changeset
293
2786
Sam Lantinga <slouken@libsdl.org>
parents: 2785
diff changeset
294 if (!surface) {
Sam Lantinga <slouken@libsdl.org>
parents: 2785
diff changeset
295 return;
Sam Lantinga <slouken@libsdl.org>
parents: 2785
diff changeset
296 }
2785
fa1095d42a5b Fixed bug with converting colorkey surface to texture
Sam Lantinga <slouken@libsdl.org>
parents: 2735
diff changeset
297
2786
Sam Lantinga <slouken@libsdl.org>
parents: 2785
diff changeset
298 if (!(surface->map->info.flags & SDL_COPY_COLORKEY) ||
Sam Lantinga <slouken@libsdl.org>
parents: 2785
diff changeset
299 !surface->format->Amask) {
Sam Lantinga <slouken@libsdl.org>
parents: 2785
diff changeset
300 return;
Sam Lantinga <slouken@libsdl.org>
parents: 2785
diff changeset
301 }
2785
fa1095d42a5b Fixed bug with converting colorkey surface to texture
Sam Lantinga <slouken@libsdl.org>
parents: 2735
diff changeset
302
2786
Sam Lantinga <slouken@libsdl.org>
parents: 2785
diff changeset
303 SDL_LockSurface(surface);
2785
fa1095d42a5b Fixed bug with converting colorkey surface to texture
Sam Lantinga <slouken@libsdl.org>
parents: 2735
diff changeset
304
2786
Sam Lantinga <slouken@libsdl.org>
parents: 2785
diff changeset
305 switch (surface->format->BytesPerPixel) {
Sam Lantinga <slouken@libsdl.org>
parents: 2785
diff changeset
306 case 2:
Sam Lantinga <slouken@libsdl.org>
parents: 2785
diff changeset
307 {
Sam Lantinga <slouken@libsdl.org>
parents: 2785
diff changeset
308 Uint16 *row, *spot;
Sam Lantinga <slouken@libsdl.org>
parents: 2785
diff changeset
309 Uint16 ckey = (Uint16) surface->map->info.colorkey;
Sam Lantinga <slouken@libsdl.org>
parents: 2785
diff changeset
310 Uint16 mask = (Uint16) (~surface->format->Amask);
2785
fa1095d42a5b Fixed bug with converting colorkey surface to texture
Sam Lantinga <slouken@libsdl.org>
parents: 2735
diff changeset
311
2786
Sam Lantinga <slouken@libsdl.org>
parents: 2785
diff changeset
312 row = (Uint16 *) surface->pixels;
Sam Lantinga <slouken@libsdl.org>
parents: 2785
diff changeset
313 for (y = surface->h; y--;) {
Sam Lantinga <slouken@libsdl.org>
parents: 2785
diff changeset
314 spot = row;
Sam Lantinga <slouken@libsdl.org>
parents: 2785
diff changeset
315 for (x = surface->w; x--;) {
Sam Lantinga <slouken@libsdl.org>
parents: 2785
diff changeset
316 if (*spot == ckey) {
Sam Lantinga <slouken@libsdl.org>
parents: 2785
diff changeset
317 *spot &= mask;
Sam Lantinga <slouken@libsdl.org>
parents: 2785
diff changeset
318 }
Sam Lantinga <slouken@libsdl.org>
parents: 2785
diff changeset
319 ++spot;
Sam Lantinga <slouken@libsdl.org>
parents: 2785
diff changeset
320 }
Sam Lantinga <slouken@libsdl.org>
parents: 2785
diff changeset
321 row += surface->pitch / 2;
Sam Lantinga <slouken@libsdl.org>
parents: 2785
diff changeset
322 }
Sam Lantinga <slouken@libsdl.org>
parents: 2785
diff changeset
323 }
Sam Lantinga <slouken@libsdl.org>
parents: 2785
diff changeset
324 break;
Sam Lantinga <slouken@libsdl.org>
parents: 2785
diff changeset
325 case 3:
Sam Lantinga <slouken@libsdl.org>
parents: 2785
diff changeset
326 /* FIXME */
Sam Lantinga <slouken@libsdl.org>
parents: 2785
diff changeset
327 break;
Sam Lantinga <slouken@libsdl.org>
parents: 2785
diff changeset
328 case 4:
Sam Lantinga <slouken@libsdl.org>
parents: 2785
diff changeset
329 {
Sam Lantinga <slouken@libsdl.org>
parents: 2785
diff changeset
330 Uint32 *row, *spot;
Sam Lantinga <slouken@libsdl.org>
parents: 2785
diff changeset
331 Uint32 ckey = surface->map->info.colorkey;
Sam Lantinga <slouken@libsdl.org>
parents: 2785
diff changeset
332 Uint32 mask = ~surface->format->Amask;
2785
fa1095d42a5b Fixed bug with converting colorkey surface to texture
Sam Lantinga <slouken@libsdl.org>
parents: 2735
diff changeset
333
2786
Sam Lantinga <slouken@libsdl.org>
parents: 2785
diff changeset
334 row = (Uint32 *) surface->pixels;
Sam Lantinga <slouken@libsdl.org>
parents: 2785
diff changeset
335 for (y = surface->h; y--;) {
Sam Lantinga <slouken@libsdl.org>
parents: 2785
diff changeset
336 spot = row;
Sam Lantinga <slouken@libsdl.org>
parents: 2785
diff changeset
337 for (x = surface->w; x--;) {
Sam Lantinga <slouken@libsdl.org>
parents: 2785
diff changeset
338 if (*spot == ckey) {
Sam Lantinga <slouken@libsdl.org>
parents: 2785
diff changeset
339 *spot &= mask;
Sam Lantinga <slouken@libsdl.org>
parents: 2785
diff changeset
340 }
Sam Lantinga <slouken@libsdl.org>
parents: 2785
diff changeset
341 ++spot;
Sam Lantinga <slouken@libsdl.org>
parents: 2785
diff changeset
342 }
Sam Lantinga <slouken@libsdl.org>
parents: 2785
diff changeset
343 row += surface->pitch / 4;
Sam Lantinga <slouken@libsdl.org>
parents: 2785
diff changeset
344 }
Sam Lantinga <slouken@libsdl.org>
parents: 2785
diff changeset
345 }
Sam Lantinga <slouken@libsdl.org>
parents: 2785
diff changeset
346 break;
Sam Lantinga <slouken@libsdl.org>
parents: 2785
diff changeset
347 }
2785
fa1095d42a5b Fixed bug with converting colorkey surface to texture
Sam Lantinga <slouken@libsdl.org>
parents: 2735
diff changeset
348
2786
Sam Lantinga <slouken@libsdl.org>
parents: 2785
diff changeset
349 SDL_UnlockSurface(surface);
2785
fa1095d42a5b Fixed bug with converting colorkey surface to texture
Sam Lantinga <slouken@libsdl.org>
parents: 2735
diff changeset
350
2786
Sam Lantinga <slouken@libsdl.org>
parents: 2785
diff changeset
351 SDL_SetColorKey(surface, 0, 0);
2884
9dde605c7540 Date: Fri, 19 Dec 2008 20:17:35 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
352 SDL_SetSurfaceBlendMode(surface, SDL_BLENDMODE_BLEND);
2785
fa1095d42a5b Fixed bug with converting colorkey surface to texture
Sam Lantinga <slouken@libsdl.org>
parents: 2735
diff changeset
353 }
fa1095d42a5b Fixed bug with converting colorkey surface to texture
Sam Lantinga <slouken@libsdl.org>
parents: 2735
diff changeset
354
2267
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2266
diff changeset
355 int
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2266
diff changeset
356 SDL_SetSurfaceColorMod(SDL_Surface * surface, Uint8 r, Uint8 g, Uint8 b)
2266
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
357 {
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
358 int flags;
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
359
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
360 if (!surface) {
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
361 return -1;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
362 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
363
2266
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
364 surface->map->info.r = r;
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
365 surface->map->info.g = g;
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
366 surface->map->info.b = b;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
367
2266
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
368 flags = surface->map->info.flags;
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
369 if (r != 0xFF || g != 0xFF || b != 0xFF) {
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
370 surface->map->info.flags |= SDL_COPY_MODULATE_COLOR;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
371 } else {
2266
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
372 surface->map->info.flags &= ~SDL_COPY_MODULATE_COLOR;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
373 }
2266
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
374 if (surface->map->info.flags != flags) {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
375 SDL_InvalidateMap(surface->map);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
376 }
2266
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
377 return 0;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
378 }
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
379
2266
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
380
2267
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2266
diff changeset
381 int
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2266
diff changeset
382 SDL_GetSurfaceColorMod(SDL_Surface * surface, Uint8 * r, Uint8 * g, Uint8 * b)
431
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
383 {
2266
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
384 if (!surface) {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
385 return -1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
386 }
2266
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
387
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
388 if (r) {
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
389 *r = surface->map->info.r;
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
390 }
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
391 if (g) {
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
392 *g = surface->map->info.g;
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
393 }
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
394 if (b) {
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
395 *b = surface->map->info.b;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
396 }
2266
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
397 return 0;
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
398 }
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
399
2267
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2266
diff changeset
400 int
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2266
diff changeset
401 SDL_SetSurfaceAlphaMod(SDL_Surface * surface, Uint8 alpha)
2266
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
402 {
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
403 int flags;
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
404
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
405 if (!surface) {
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
406 return -1;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
407 }
431
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
408
2266
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
409 surface->map->info.a = alpha;
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
410
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
411 flags = surface->map->info.flags;
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
412 if (alpha != 0xFF) {
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
413 surface->map->info.flags |= SDL_COPY_MODULATE_ALPHA;
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
414 } else {
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
415 surface->map->info.flags &= ~SDL_COPY_MODULATE_ALPHA;
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
416 }
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
417 if (surface->map->info.flags != flags) {
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
418 SDL_InvalidateMap(surface->map);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
419 }
2266
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
420 return 0;
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
421 }
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
422
2267
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2266
diff changeset
423 int
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2266
diff changeset
424 SDL_GetSurfaceAlphaMod(SDL_Surface * surface, Uint8 * alpha)
2266
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
425 {
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
426 if (!surface) {
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
427 return -1;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
428 }
2266
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
429
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
430 if (alpha) {
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
431 *alpha = surface->map->info.a;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
432 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
433 return 0;
431
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
434 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
435
2267
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2266
diff changeset
436 int
4929
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents: 4491
diff changeset
437 SDL_SetSurfaceBlendMode(SDL_Surface * surface, SDL_BlendMode blendMode)
2266
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
438 {
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
439 int flags, status;
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
440
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
441 if (!surface) {
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
442 return -1;
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
443 }
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
444
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
445 status = 0;
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
446 flags = surface->map->info.flags;
5187
d976b67150c5 Restored SDL_BLENDMODE_MOD for MAME
Sam Lantinga <slouken@libsdl.org>
parents: 5143
diff changeset
447 surface->map->info.flags &=
d976b67150c5 Restored SDL_BLENDMODE_MOD for MAME
Sam Lantinga <slouken@libsdl.org>
parents: 5143
diff changeset
448 ~(SDL_COPY_BLEND | SDL_COPY_ADD | SDL_COPY_MOD);
2266
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
449 switch (blendMode) {
2884
9dde605c7540 Date: Fri, 19 Dec 2008 20:17:35 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
450 case SDL_BLENDMODE_NONE:
2266
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
451 break;
2884
9dde605c7540 Date: Fri, 19 Dec 2008 20:17:35 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
452 case SDL_BLENDMODE_BLEND:
2266
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
453 surface->map->info.flags |= SDL_COPY_BLEND;
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
454 break;
2884
9dde605c7540 Date: Fri, 19 Dec 2008 20:17:35 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
455 case SDL_BLENDMODE_ADD:
2266
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
456 surface->map->info.flags |= SDL_COPY_ADD;
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
457 break;
5187
d976b67150c5 Restored SDL_BLENDMODE_MOD for MAME
Sam Lantinga <slouken@libsdl.org>
parents: 5143
diff changeset
458 case SDL_BLENDMODE_MOD:
d976b67150c5 Restored SDL_BLENDMODE_MOD for MAME
Sam Lantinga <slouken@libsdl.org>
parents: 5143
diff changeset
459 surface->map->info.flags |= SDL_COPY_MOD;
d976b67150c5 Restored SDL_BLENDMODE_MOD for MAME
Sam Lantinga <slouken@libsdl.org>
parents: 5143
diff changeset
460 break;
2266
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
461 default:
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
462 SDL_Unsupported();
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
463 status = -1;
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
464 break;
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
465 }
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
466
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
467 if (surface->map->info.flags != flags) {
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
468 SDL_InvalidateMap(surface->map);
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
469 }
2267
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2266
diff changeset
470
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2266
diff changeset
471 /* Compatibility mode */
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2266
diff changeset
472 if (surface->map->info.flags & SDL_COPY_BLEND) {
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2266
diff changeset
473 surface->flags |= SDL_SRCALPHA;
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2266
diff changeset
474 } else {
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2266
diff changeset
475 surface->flags &= ~SDL_SRCALPHA;
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2266
diff changeset
476 }
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2266
diff changeset
477
2266
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
478 return status;
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
479 }
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
480
2267
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2266
diff changeset
481 int
4929
aa8888658021 Use the enumerated type for blend and scale mode instead of int
Sam Lantinga <slouken@libsdl.org>
parents: 4491
diff changeset
482 SDL_GetSurfaceBlendMode(SDL_Surface * surface, SDL_BlendMode *blendMode)
2266
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
483 {
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
484 if (!surface) {
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
485 return -1;
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
486 }
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
487
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
488 if (!blendMode) {
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
489 return 0;
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
490 }
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
491
5187
d976b67150c5 Restored SDL_BLENDMODE_MOD for MAME
Sam Lantinga <slouken@libsdl.org>
parents: 5143
diff changeset
492 switch (surface->map->
d976b67150c5 Restored SDL_BLENDMODE_MOD for MAME
Sam Lantinga <slouken@libsdl.org>
parents: 5143
diff changeset
493 info.flags & (SDL_COPY_BLEND | SDL_COPY_ADD | SDL_COPY_MOD)) {
2266
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
494 case SDL_COPY_BLEND:
2884
9dde605c7540 Date: Fri, 19 Dec 2008 20:17:35 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
495 *blendMode = SDL_BLENDMODE_BLEND;
2266
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
496 break;
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
497 case SDL_COPY_ADD:
2884
9dde605c7540 Date: Fri, 19 Dec 2008 20:17:35 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
498 *blendMode = SDL_BLENDMODE_ADD;
2266
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
499 break;
5187
d976b67150c5 Restored SDL_BLENDMODE_MOD for MAME
Sam Lantinga <slouken@libsdl.org>
parents: 5143
diff changeset
500 case SDL_COPY_MOD:
d976b67150c5 Restored SDL_BLENDMODE_MOD for MAME
Sam Lantinga <slouken@libsdl.org>
parents: 5143
diff changeset
501 *blendMode = SDL_BLENDMODE_MOD;
d976b67150c5 Restored SDL_BLENDMODE_MOD for MAME
Sam Lantinga <slouken@libsdl.org>
parents: 5143
diff changeset
502 break;
2266
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
503 default:
2884
9dde605c7540 Date: Fri, 19 Dec 2008 20:17:35 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
504 *blendMode = SDL_BLENDMODE_NONE;
2266
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
505 break;
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
506 }
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
507 return 0;
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
508 }
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
509
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
510 SDL_bool
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
511 SDL_SetClipRect(SDL_Surface * surface, const SDL_Rect * rect)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
512 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
513 SDL_Rect full_rect;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
514
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
515 /* Don't do anything if there's no surface to act on */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
516 if (!surface) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
517 return SDL_FALSE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
518 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
519
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
520 /* Set up the full surface rectangle */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
521 full_rect.x = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
522 full_rect.y = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
523 full_rect.w = surface->w;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
524 full_rect.h = surface->h;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
525
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
526 /* Set the clipping rectangle */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
527 if (!rect) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
528 surface->clip_rect = full_rect;
4966
a130bc2f0a18 Fixed return value
Sam Lantinga <slouken@libsdl.org>
parents: 4949
diff changeset
529 return SDL_TRUE;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
530 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
531 return SDL_IntersectRect(rect, &full_rect, &surface->clip_rect);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
532 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
533
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
534 void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
535 SDL_GetClipRect(SDL_Surface * surface, SDL_Rect * rect)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
536 {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
537 if (surface && rect) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
538 *rect = surface->clip_rect;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
539 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
540 }
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
541
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
542 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
543 * Set up a blit between two surfaces -- split into three parts:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
544 * The upper part, SDL_UpperBlit(), performs clipping and rectangle
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
545 * verification. The lower part is a pointer to a low level
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
546 * accelerated blitting function.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
547 *
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
548 * These parts are separated out and each used internally by this
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
549 * library in the optimimum places. They are exported so that if
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
550 * you know exactly what you are doing, you can optimize your code
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
551 * by calling the one(s) you need.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
552 */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
553 int
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
554 SDL_LowerBlit(SDL_Surface * src, SDL_Rect * srcrect,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
555 SDL_Surface * dst, SDL_Rect * dstrect)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
556 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
557 /* Check to make sure the blit mapping is valid */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
558 if ((src->map->dst != dst) ||
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
559 (src->map->dst->format_version != src->map->format_version)) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
560 if (SDL_MapSurface(src, dst) < 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
561 return (-1);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
562 }
2328
91e601d9df8b re: bug#563. checking in some commented out trace code and a fix so that the in testalpha.c the background only flashes when alpha == 255. The problem that is being
Bob Pendleton <bob@pendleton.com>
parents: 2267
diff changeset
563 /* just here for debugging */
2329
c1a390f6a819 ran make indent
Bob Pendleton <bob@pendleton.com>
parents: 2328
diff changeset
564 /* printf */
c1a390f6a819 ran make indent
Bob Pendleton <bob@pendleton.com>
parents: 2328
diff changeset
565 /* ("src = 0x%08X src->flags = %08X src->map->info.flags = %08x\ndst = 0x%08X dst->flags = %08X dst->map->info.flags = %08X\nsrc->map->blit = 0x%08x\n", */
c1a390f6a819 ran make indent
Bob Pendleton <bob@pendleton.com>
parents: 2328
diff changeset
566 /* src, dst->flags, src->map->info.flags, dst, dst->flags, */
c1a390f6a819 ran make indent
Bob Pendleton <bob@pendleton.com>
parents: 2328
diff changeset
567 /* dst->map->info.flags, src->map->blit); */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
568 }
2257
340942cfda48 Moved the colorkey and per-surface alpha into the blit info,
Sam Lantinga <slouken@libsdl.org>
parents: 2253
diff changeset
569 return (src->map->blit(src, srcrect, dst, dstrect));
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
570 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
571
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
572
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
573 int
4949
68da5a234bba The source rectangle isn't modified in SDL_UpperBlit
Sam Lantinga <slouken@libsdl.org>
parents: 4929
diff changeset
574 SDL_UpperBlit(SDL_Surface * src, const SDL_Rect * srcrect,
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
575 SDL_Surface * dst, SDL_Rect * dstrect)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
576 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
577 SDL_Rect fulldst;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
578 int srcx, srcy, w, h;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
579
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
580 /* Make sure the surfaces aren't locked */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
581 if (!src || !dst) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
582 SDL_SetError("SDL_UpperBlit: passed a NULL surface");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
583 return (-1);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
584 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
585 if (src->locked || dst->locked) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
586 SDL_SetError("Surfaces must not be locked during blit");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
587 return (-1);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
588 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
589
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
590 /* If the destination rectangle is NULL, use the entire dest surface */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
591 if (dstrect == NULL) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
592 fulldst.x = fulldst.y = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
593 dstrect = &fulldst;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
594 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
595
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
596 /* clip the source rectangle to the source surface */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
597 if (srcrect) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
598 int maxw, maxh;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
599
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
600 srcx = srcrect->x;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
601 w = srcrect->w;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
602 if (srcx < 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
603 w += srcx;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
604 dstrect->x -= srcx;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
605 srcx = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
606 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
607 maxw = src->w - srcx;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
608 if (maxw < w)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
609 w = maxw;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
610
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
611 srcy = srcrect->y;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
612 h = srcrect->h;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
613 if (srcy < 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
614 h += srcy;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
615 dstrect->y -= srcy;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
616 srcy = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
617 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
618 maxh = src->h - srcy;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
619 if (maxh < h)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
620 h = maxh;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
621
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
622 } else {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
623 srcx = srcy = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
624 w = src->w;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
625 h = src->h;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
626 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
627
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
628 /* clip the destination rectangle against the clip rectangle */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
629 {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
630 SDL_Rect *clip = &dst->clip_rect;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
631 int dx, dy;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
632
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
633 dx = clip->x - dstrect->x;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
634 if (dx > 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
635 w -= dx;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
636 dstrect->x += dx;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
637 srcx += dx;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
638 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
639 dx = dstrect->x + w - clip->x - clip->w;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
640 if (dx > 0)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
641 w -= dx;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
642
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
643 dy = clip->y - dstrect->y;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
644 if (dy > 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
645 h -= dy;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
646 dstrect->y += dy;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
647 srcy += dy;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
648 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
649 dy = dstrect->y + h - clip->y - clip->h;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
650 if (dy > 0)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
651 h -= dy;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
652 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
653
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
654 if (w > 0 && h > 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
655 SDL_Rect sr;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
656 sr.x = srcx;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
657 sr.y = srcy;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
658 sr.w = dstrect->w = w;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
659 sr.h = dstrect->h = h;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
660 return SDL_LowerBlit(src, &sr, dst, dstrect);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
661 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
662 dstrect->w = dstrect->h = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
663 return 0;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
664 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
665
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
666 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
667 * Lock a surface to directly access the pixels
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
668 */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
669 int
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
670 SDL_LockSurface(SDL_Surface * surface)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
671 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
672 if (!surface->locked) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
673 /* Perform the lock */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
674 if (surface->flags & SDL_RLEACCEL) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
675 SDL_UnRLESurface(surface, 1);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
676 surface->flags |= SDL_RLEACCEL; /* save accel'd state */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
677 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
678 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
679
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
680 /* Increment the surface lock count, for recursive locks */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
681 ++surface->locked;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
682
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
683 /* Ready to go.. */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
684 return (0);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
685 }
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
686
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
687 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
688 * Unlock a previously locked surface
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
689 */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
690 void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
691 SDL_UnlockSurface(SDL_Surface * surface)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
692 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
693 /* Only perform an unlock if we are locked */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
694 if (!surface->locked || (--surface->locked > 0)) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
695 return;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
696 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
697
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
698 /* Update RLE encoded surface with new data */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
699 if ((surface->flags & SDL_RLEACCEL) == SDL_RLEACCEL) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
700 surface->flags &= ~SDL_RLEACCEL; /* stop lying */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
701 SDL_RLESurface(surface);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
702 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
703 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
704
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
705 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
706 * Convert a surface into the specified pixel format.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
707 */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
708 SDL_Surface *
2807
365fe1a2aad5 The SDL_RLEACCEL flag is respected in SDL_ConvertSurface(), per the docs.
Sam Lantinga <slouken@libsdl.org>
parents: 2787
diff changeset
709 SDL_ConvertSurface(SDL_Surface * surface, SDL_PixelFormat * format,
365fe1a2aad5 The SDL_RLEACCEL flag is respected in SDL_ConvertSurface(), per the docs.
Sam Lantinga <slouken@libsdl.org>
parents: 2787
diff changeset
710 Uint32 flags)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
711 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
712 SDL_Surface *convert;
2266
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
713 Uint32 copy_flags;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
714 SDL_Rect bounds;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
715
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
716 /* Check for empty destination palette! (results in empty image) */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
717 if (format->palette != NULL) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
718 int i;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
719 for (i = 0; i < format->palette->ncolors; ++i) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
720 if ((format->palette->colors[i].r != 0xFF) ||
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
721 (format->palette->colors[i].g != 0xFF) ||
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
722 (format->palette->colors[i].b != 0xFF))
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
723 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
724 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
725 if (i == format->palette->ncolors) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
726 SDL_SetError("Empty destination palette");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
727 return (NULL);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
728 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
729 }
264
c9cd3b564e4b *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 252
diff changeset
730
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
731 /* Create a new surface with the desired format */
2807
365fe1a2aad5 The SDL_RLEACCEL flag is respected in SDL_ConvertSurface(), per the docs.
Sam Lantinga <slouken@libsdl.org>
parents: 2787
diff changeset
732 convert = SDL_CreateRGBSurface(flags, surface->w, surface->h,
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
733 format->BitsPerPixel, format->Rmask,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
734 format->Gmask, format->Bmask,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
735 format->Amask);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
736 if (convert == NULL) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
737 return (NULL);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
738 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
739
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
740 /* Copy the palette if any */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
741 if (format->palette && convert->format->palette) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
742 SDL_memcpy(convert->format->palette->colors,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
743 format->palette->colors,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
744 format->palette->ncolors * sizeof(SDL_Color));
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
745 convert->format->palette->ncolors = format->palette->ncolors;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
746 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
747
2266
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
748 /* Save the original copy flags */
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
749 copy_flags = surface->map->info.flags;
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
750 surface->map->info.flags = 0;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
751
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
752 /* Copy over the image data */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
753 bounds.x = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
754 bounds.y = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
755 bounds.w = surface->w;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
756 bounds.h = surface->h;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
757 SDL_LowerBlit(surface, &bounds, convert, &bounds);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
758
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
759 /* Clean up the original surface, and update converted surface */
2824
4dba7aa7ea77 Added slow but complete blit fallback
Sam Lantinga <slouken@libsdl.org>
parents: 2807
diff changeset
760 convert->map->info.r = surface->map->info.r;
4dba7aa7ea77 Added slow but complete blit fallback
Sam Lantinga <slouken@libsdl.org>
parents: 2807
diff changeset
761 convert->map->info.g = surface->map->info.g;
4dba7aa7ea77 Added slow but complete blit fallback
Sam Lantinga <slouken@libsdl.org>
parents: 2807
diff changeset
762 convert->map->info.b = surface->map->info.b;
4dba7aa7ea77 Added slow but complete blit fallback
Sam Lantinga <slouken@libsdl.org>
parents: 2807
diff changeset
763 convert->map->info.a = surface->map->info.a;
4dba7aa7ea77 Added slow but complete blit fallback
Sam Lantinga <slouken@libsdl.org>
parents: 2807
diff changeset
764 convert->map->info.flags =
4dba7aa7ea77 Added slow but complete blit fallback
Sam Lantinga <slouken@libsdl.org>
parents: 2807
diff changeset
765 (copy_flags &
4dba7aa7ea77 Added slow but complete blit fallback
Sam Lantinga <slouken@libsdl.org>
parents: 2807
diff changeset
766 ~(SDL_COPY_COLORKEY | SDL_COPY_BLEND
4dba7aa7ea77 Added slow but complete blit fallback
Sam Lantinga <slouken@libsdl.org>
parents: 2807
diff changeset
767 | SDL_COPY_RLE_DESIRED | SDL_COPY_RLE_COLORKEY |
4dba7aa7ea77 Added slow but complete blit fallback
Sam Lantinga <slouken@libsdl.org>
parents: 2807
diff changeset
768 SDL_COPY_RLE_ALPHAKEY));
4dba7aa7ea77 Added slow but complete blit fallback
Sam Lantinga <slouken@libsdl.org>
parents: 2807
diff changeset
769 surface->map->info.flags = copy_flags;
2266
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
770 if (copy_flags & SDL_COPY_COLORKEY) {
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
771 Uint8 keyR, keyG, keyB, keyA;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
772
2267
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2266
diff changeset
773 SDL_GetRGBA(surface->map->info.colorkey, surface->format, &keyR,
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2266
diff changeset
774 &keyG, &keyB, &keyA);
2266
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
775 SDL_SetColorKey(convert, 1,
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
776 SDL_MapRGBA(convert->format, keyR, keyG, keyB, keyA));
2824
4dba7aa7ea77 Added slow but complete blit fallback
Sam Lantinga <slouken@libsdl.org>
parents: 2807
diff changeset
777 /* This is needed when converting for 3D texture upload */
2787
93764fe8601a It turns out both the software and the OpenGL renderer had the same problem.
Sam Lantinga <slouken@libsdl.org>
parents: 2786
diff changeset
778 SDL_ConvertColorkeyToAlpha(convert);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
779 }
2824
4dba7aa7ea77 Added slow but complete blit fallback
Sam Lantinga <slouken@libsdl.org>
parents: 2807
diff changeset
780 SDL_SetClipRect(convert, &surface->clip_rect);
2266
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
781
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
782 /* Enable alpha blending by default if the new surface has an
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
783 * alpha channel or alpha modulation */
2824
4dba7aa7ea77 Added slow but complete blit fallback
Sam Lantinga <slouken@libsdl.org>
parents: 2807
diff changeset
784 if ((surface->format->Amask && format->Amask) ||
4491
2cd7bb613a83 Turn on blending if we're converting from a surface with colorkey enabled
Sam Lantinga <slouken@libsdl.org>
parents: 4461
diff changeset
785 (copy_flags & (SDL_COPY_COLORKEY|SDL_COPY_MODULATE_ALPHA))) {
2884
9dde605c7540 Date: Fri, 19 Dec 2008 20:17:35 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
786 SDL_SetSurfaceBlendMode(convert, SDL_BLENDMODE_BLEND);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
787 }
2824
4dba7aa7ea77 Added slow but complete blit fallback
Sam Lantinga <slouken@libsdl.org>
parents: 2807
diff changeset
788 if ((copy_flags & SDL_COPY_RLE_DESIRED) || (flags & SDL_RLEACCEL)) {
4dba7aa7ea77 Added slow but complete blit fallback
Sam Lantinga <slouken@libsdl.org>
parents: 2807
diff changeset
789 SDL_SetSurfaceRLE(convert, SDL_RLEACCEL);
4dba7aa7ea77 Added slow but complete blit fallback
Sam Lantinga <slouken@libsdl.org>
parents: 2807
diff changeset
790 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
791
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
792 /* We're ready to go! */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
793 return (convert);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
794 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
795
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
796 /*
3434
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
797 * Create a surface on the stack for quick blit operations
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
798 */
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
799 static __inline__ SDL_bool
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
800 SDL_CreateSurfaceOnStack(int width, int height, Uint32 pixel_format,
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
801 void * pixels, int pitch, SDL_Surface * surface,
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
802 SDL_PixelFormat * format, SDL_BlitMap * blitmap)
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
803 {
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
804 int bpp;
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
805 Uint32 Rmask, Gmask, Bmask, Amask;
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
806
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
807 if (!SDL_PixelFormatEnumToMasks(pixel_format,
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
808 &bpp, &Rmask, &Gmask, &Bmask, &Amask)) {
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
809 return SDL_FALSE;
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
810 }
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
811 if (bpp <= 8) {
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
812 SDL_SetError("Indexed pixel formats not supported");
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
813 return SDL_FALSE;
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
814 }
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
815
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
816 SDL_zerop(surface);
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
817 surface->flags = SDL_PREALLOC;
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
818 surface->format = SDL_InitFormat(format, bpp, Rmask, Gmask, Bmask, Amask);
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
819 surface->pixels = pixels;
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
820 surface->w = width;
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
821 surface->h = height;
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
822 surface->pitch = pitch;
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
823 /* We don't actually need to set up the clip rect for our purposes */
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
824 /*SDL_SetClipRect(surface, NULL);*/
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
825
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
826 /* Allocate an empty mapping */
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
827 SDL_zerop(blitmap);
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
828 blitmap->info.r = 0xFF;
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
829 blitmap->info.g = 0xFF;
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
830 blitmap->info.b = 0xFF;
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
831 blitmap->info.a = 0xFF;
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
832 surface->map = blitmap;
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
833 SDL_FormatChanged(surface);
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
834
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
835 /* The surface is ready to go */
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
836 surface->refcount = 1;
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
837 return SDL_TRUE;
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
838 }
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
839
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
840 /*
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
841 * Copy a block of pixels of one format to another format
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
842 */
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
843 int SDL_ConvertPixels(int width, int height,
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
844 Uint32 src_format, const void * src, int src_pitch,
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
845 Uint32 dst_format, void * dst, int dst_pitch)
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
846 {
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
847 SDL_Surface src_surface, dst_surface;
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
848 SDL_PixelFormat src_fmt, dst_fmt;
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
849 SDL_BlitMap src_blitmap, dst_blitmap;
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
850 SDL_Rect rect;
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
851
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
852 /* Fast path for same format copy */
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
853 if (src_format == dst_format) {
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
854 int bpp;
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
855
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
856 if (SDL_ISPIXELFORMAT_FOURCC(src_format)) {
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
857 switch (src_format) {
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
858 case SDL_PIXELFORMAT_YV12:
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
859 case SDL_PIXELFORMAT_IYUV:
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
860 case SDL_PIXELFORMAT_YUY2:
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
861 case SDL_PIXELFORMAT_UYVY:
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
862 case SDL_PIXELFORMAT_YVYU:
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
863 bpp = 2;
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
864 default:
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
865 SDL_SetError("Unknown FOURCC pixel format");
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
866 return -1;
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
867 }
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
868 } else {
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
869 bpp = SDL_BYTESPERPIXEL(src_format);
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
870 }
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
871 width *= bpp;
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
872
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
873 while (height-- > 0) {
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
874 SDL_memcpy(dst, src, width);
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
875 src = (Uint8*)src + src_pitch;
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
876 dst = (Uint8*)dst + dst_pitch;
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
877 }
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
878 return SDL_TRUE;
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
879 }
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
880
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
881 if (!SDL_CreateSurfaceOnStack(width, height, src_format, (void*)src,
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
882 src_pitch,
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
883 &src_surface, &src_fmt, &src_blitmap)) {
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
884 return -1;
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
885 }
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
886 if (!SDL_CreateSurfaceOnStack(width, height, dst_format, dst, dst_pitch,
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
887 &dst_surface, &dst_fmt, &dst_blitmap)) {
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
888 return -1;
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
889 }
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
890
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
891 /* Set up the rect and go! */
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
892 rect.x = 0;
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
893 rect.y = 0;
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
894 rect.w = width;
3436
0538362b98d3 Fixed memory corruption in SW_RenderReadPixels()
Sam Lantinga <slouken@libsdl.org>
parents: 3434
diff changeset
895 rect.h = height;
3434
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
896 return SDL_LowerBlit(&src_surface, &rect, &dst_surface, &rect);
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
897 }
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
898
147d6ef5be03 Added a utility function to convert blocks of pixels
Sam Lantinga <slouken@libsdl.org>
parents: 3103
diff changeset
899 /*
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
900 * Free a surface created by the above function.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
901 */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
902 void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
903 SDL_FreeSurface(SDL_Surface * surface)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
904 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
905 if (surface == NULL) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
906 return;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
907 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
908 if (--surface->refcount > 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
909 return;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
910 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
911 while (surface->locked > 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
912 SDL_UnlockSurface(surface);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
913 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
914 if (surface->flags & SDL_RLEACCEL) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
915 SDL_UnRLESurface(surface, 0);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
916 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
917 if (surface->format) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
918 SDL_SetSurfacePalette(surface, NULL);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
919 SDL_FreeFormat(surface->format);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
920 surface->format = NULL;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
921 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
922 if (surface->map != NULL) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
923 SDL_FreeBlitMap(surface->map);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
924 surface->map = NULL;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
925 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
926 if (surface->pixels && ((surface->flags & SDL_PREALLOC) != SDL_PREALLOC)) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
927 SDL_free(surface->pixels);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
928 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
929 SDL_free(surface);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
930 }
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
931
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1456
diff changeset
932 /* vi: set ts=4 sw=4 expandtab: */