annotate src/video/SDL_surface.c @ 1251:86d0d01290ea

Updated Windows CE/PocketPC support...adds GAPI driver, landscape mode, updated project files, VS2005 support, VGA mode, more device support, etc, etc, etc. Fixes Bugzilla #47 and #28. --ryan.
author Ryan C. Gordon <icculus@icculus.org>
date Thu, 19 Jan 2006 08:43:00 +0000
parents 91569ec25acd
children c9b51268668f
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2004 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 Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 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 Library 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 Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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
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23 #ifdef SAVE_RCSID
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24 static char rcsid =
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25 "@(#) $Id$";
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26 #endif
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27
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28 #include <stdio.h>
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29 #include <stdlib.h>
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30 #include <string.h>
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31
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32 #include "SDL_error.h"
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33 #include "SDL_video.h"
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34 #include "SDL_sysvideo.h"
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35 #include "SDL_cursor_c.h"
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36 #include "SDL_blit.h"
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37 #include "SDL_RLEaccel_c.h"
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38 #include "SDL_pixels_c.h"
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39 #include "SDL_memops.h"
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40 #include "SDL_leaks.h"
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41
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42
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43 /* Public routines */
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44 /*
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45 * Create an empty RGB surface of the appropriate depth
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46 */
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47 SDL_Surface * SDL_CreateRGBSurface (Uint32 flags,
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48 int width, int height, int depth,
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49 Uint32 Rmask, Uint32 Gmask, Uint32 Bmask, Uint32 Amask)
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50 {
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51 SDL_VideoDevice *video = current_video;
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52 SDL_VideoDevice *this = current_video;
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53 SDL_Surface *screen;
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54 SDL_Surface *surface;
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55
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56 /* Make sure the size requested doesn't overflow our datatypes */
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57 /* Next time I write a library like SDL, I'll use int for size. :) */
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58 if ( width >= 16384 || height >= 65536 ) {
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59 SDL_SetError("Width or height is too large");
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60 return(NULL);
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61 }
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62
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63 /* Check to see if we desire the surface in video memory */
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64 if ( video ) {
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65 screen = SDL_PublicSurface;
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66 } else {
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67 screen = NULL;
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68 }
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69 if ( screen && ((screen->flags&SDL_HWSURFACE) == SDL_HWSURFACE) ) {
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70 if ( (flags&(SDL_SRCCOLORKEY|SDL_SRCALPHA)) != 0 ) {
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71 flags |= SDL_HWSURFACE;
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72 }
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73 if ( (flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY ) {
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74 if ( ! current_video->info.blit_hw_CC ) {
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75 flags &= ~SDL_HWSURFACE;
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76 }
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77 }
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78 if ( (flags & SDL_SRCALPHA) == SDL_SRCALPHA ) {
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79 if ( ! current_video->info.blit_hw_A ) {
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80 flags &= ~SDL_HWSURFACE;
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81 }
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82 }
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83 } else {
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84 flags &= ~SDL_HWSURFACE;
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85 }
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86
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87 /* Allocate the surface */
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88 surface = (SDL_Surface *)malloc(sizeof(*surface));
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89 if ( surface == NULL ) {
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90 SDL_OutOfMemory();
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91 return(NULL);
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92 }
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93 surface->flags = SDL_SWSURFACE;
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94 if ( (flags & SDL_HWSURFACE) == SDL_HWSURFACE ) {
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95 if ((Amask) && (video->displayformatalphapixel))
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96 {
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97 depth = video->displayformatalphapixel->BitsPerPixel;
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98 Rmask = video->displayformatalphapixel->Rmask;
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99 Gmask = video->displayformatalphapixel->Gmask;
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100 Bmask = video->displayformatalphapixel->Bmask;
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101 Amask = video->displayformatalphapixel->Amask;
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102 }
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103 else
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104 {
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105 depth = screen->format->BitsPerPixel;
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106 Rmask = screen->format->Rmask;
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107 Gmask = screen->format->Gmask;
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108 Bmask = screen->format->Bmask;
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109 Amask = screen->format->Amask;
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110 }
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111 }
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112 surface->format = SDL_AllocFormat(depth, Rmask, Gmask, Bmask, Amask);
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113 if ( surface->format == NULL ) {
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114 free(surface);
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115 return(NULL);
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116 }
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117 if ( Amask ) {
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118 surface->flags |= SDL_SRCALPHA;
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119 }
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120 surface->w = width;
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121 surface->h = height;
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122 surface->pitch = SDL_CalculatePitch(surface);
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123 surface->pixels = NULL;
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124 surface->offset = 0;
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125 surface->hwdata = NULL;
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126 surface->locked = 0;
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127 surface->map = NULL;
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128 surface->unused1 = 0;
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129 SDL_SetClipRect(surface, NULL);
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130 SDL_FormatChanged(surface);
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131
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132 /* Get the pixels */
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133 if ( ((flags&SDL_HWSURFACE) == SDL_SWSURFACE) ||
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134 (video->AllocHWSurface(this, surface) < 0) ) {
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135 if ( surface->w && surface->h ) {
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136 surface->pixels = malloc(surface->h*surface->pitch);
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137 if ( surface->pixels == NULL ) {
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138 SDL_FreeSurface(surface);
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139 SDL_OutOfMemory();
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140 return(NULL);
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141 }
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142 /* This is important for bitmaps */
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143 memset(surface->pixels, 0, surface->h*surface->pitch);
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144 }
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145 }
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146
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147 /* Allocate an empty mapping */
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148 surface->map = SDL_AllocBlitMap();
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149 if ( surface->map == NULL ) {
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150 SDL_FreeSurface(surface);
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151 return(NULL);
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152 }
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153
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154 /* The surface is ready to go */
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155 surface->refcount = 1;
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156 #ifdef CHECK_LEAKS
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157 ++surfaces_allocated;
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158 #endif
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159 return(surface);
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160 }
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161 /*
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162 * Create an RGB surface from an existing memory buffer
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163 */
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164 SDL_Surface * SDL_CreateRGBSurfaceFrom (void *pixels,
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165 int width, int height, int depth, int pitch,
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166 Uint32 Rmask, Uint32 Gmask, Uint32 Bmask, Uint32 Amask)
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167 {
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168 SDL_Surface *surface;
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169
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170 surface = SDL_CreateRGBSurface(SDL_SWSURFACE, 0, 0, depth,
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171 Rmask, Gmask, Bmask, Amask);
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172 if ( surface != NULL ) {
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173 surface->flags |= SDL_PREALLOC;
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174 surface->pixels = pixels;
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175 surface->w = width;
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176 surface->h = height;
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177 surface->pitch = pitch;
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178 SDL_SetClipRect(surface, NULL);
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179 }
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180 return(surface);
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181 }
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182 /*
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183 * Set the color key in a blittable surface
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184 */
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185 int SDL_SetColorKey (SDL_Surface *surface, Uint32 flag, Uint32 key)
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186 {
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187 /* Sanity check the flag as it gets passed in */
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188 if ( flag & SDL_SRCCOLORKEY ) {
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189 if ( flag & (SDL_RLEACCEL|SDL_RLEACCELOK) ) {
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190 flag = (SDL_SRCCOLORKEY | SDL_RLEACCELOK);
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191 } else {
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192 flag = SDL_SRCCOLORKEY;
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193 }
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194 } else {
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195 flag = 0;
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196 }
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197
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198 /* Optimize away operations that don't change anything */
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199 if ( (flag == (surface->flags & (SDL_SRCCOLORKEY|SDL_RLEACCELOK))) &&
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200 (key == surface->format->colorkey) ) {
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201 return(0);
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202 }
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203
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204 /* UnRLE surfaces before we change the colorkey */
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205 if ( surface->flags & SDL_RLEACCEL ) {
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206 SDL_UnRLESurface(surface, 1);
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207 }
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208
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209 if ( flag ) {
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210 SDL_VideoDevice *video = current_video;
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211 SDL_VideoDevice *this = current_video;
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212
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diff changeset
213
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214 surface->flags |= SDL_SRCCOLORKEY;
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215 surface->format->colorkey = key;
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diff changeset
216 if ( (surface->flags & SDL_HWACCEL) == SDL_HWACCEL ) {
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parents:
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217 if ( (video->SetHWColorKey == NULL) ||
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218 (video->SetHWColorKey(this, surface, key) < 0) ) {
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219 surface->flags &= ~SDL_HWACCEL;
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diff changeset
220 }
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diff changeset
221 }
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diff changeset
222 if ( flag & SDL_RLEACCELOK ) {
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diff changeset
223 surface->flags |= SDL_RLEACCELOK;
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parents:
diff changeset
224 } else {
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diff changeset
225 surface->flags &= ~SDL_RLEACCELOK;
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diff changeset
226 }
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diff changeset
227 } else {
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228 surface->flags &= ~(SDL_SRCCOLORKEY|SDL_RLEACCELOK);
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diff changeset
229 surface->format->colorkey = 0;
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diff changeset
230 }
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diff changeset
231 SDL_InvalidateMap(surface->map);
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232 return(0);
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diff changeset
233 }
431
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
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parents: 422
diff changeset
234 /* This function sets the alpha channel of a surface */
0
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diff changeset
235 int SDL_SetAlpha (SDL_Surface *surface, Uint32 flag, Uint8 value)
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parents:
diff changeset
236 {
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237 Uint32 oldflags = surface->flags;
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diff changeset
238 Uint32 oldalpha = surface->format->alpha;
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diff changeset
239
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parents:
diff changeset
240 /* Sanity check the flag as it gets passed in */
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parents:
diff changeset
241 if ( flag & SDL_SRCALPHA ) {
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parents:
diff changeset
242 if ( flag & (SDL_RLEACCEL|SDL_RLEACCELOK) ) {
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diff changeset
243 flag = (SDL_SRCALPHA | SDL_RLEACCELOK);
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parents:
diff changeset
244 } else {
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245 flag = SDL_SRCALPHA;
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parents:
diff changeset
246 }
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diff changeset
247 } else {
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diff changeset
248 flag = 0;
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parents:
diff changeset
249 }
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diff changeset
250
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parents:
diff changeset
251 /* Optimize away operations that don't change anything */
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diff changeset
252 if ( (flag == (surface->flags & (SDL_SRCALPHA|SDL_RLEACCELOK))) &&
74212992fb08 Initial revision
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parents:
diff changeset
253 (!flag || value == oldalpha) ) {
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diff changeset
254 return(0);
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parents:
diff changeset
255 }
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diff changeset
256
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diff changeset
257 if(!(flag & SDL_RLEACCELOK) && (surface->flags & SDL_RLEACCEL))
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diff changeset
258 SDL_UnRLESurface(surface, 1);
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parents:
diff changeset
259
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parents:
diff changeset
260 if ( flag ) {
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parents:
diff changeset
261 SDL_VideoDevice *video = current_video;
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diff changeset
262 SDL_VideoDevice *this = current_video;
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parents:
diff changeset
263
74212992fb08 Initial revision
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diff changeset
264 surface->flags |= SDL_SRCALPHA;
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diff changeset
265 surface->format->alpha = value;
74212992fb08 Initial revision
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diff changeset
266 if ( (surface->flags & SDL_HWACCEL) == SDL_HWACCEL ) {
74212992fb08 Initial revision
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parents:
diff changeset
267 if ( (video->SetHWAlpha == NULL) ||
74212992fb08 Initial revision
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parents:
diff changeset
268 (video->SetHWAlpha(this, surface, value) < 0) ) {
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parents:
diff changeset
269 surface->flags &= ~SDL_HWACCEL;
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parents:
diff changeset
270 }
74212992fb08 Initial revision
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parents:
diff changeset
271 }
74212992fb08 Initial revision
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parents:
diff changeset
272 if ( flag & SDL_RLEACCELOK ) {
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parents:
diff changeset
273 surface->flags |= SDL_RLEACCELOK;
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parents:
diff changeset
274 } else {
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diff changeset
275 surface->flags &= ~SDL_RLEACCELOK;
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parents:
diff changeset
276 }
74212992fb08 Initial revision
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parents:
diff changeset
277 } else {
74212992fb08 Initial revision
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parents:
diff changeset
278 surface->flags &= ~SDL_SRCALPHA;
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parents:
diff changeset
279 surface->format->alpha = SDL_ALPHA_OPAQUE;
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parents:
diff changeset
280 }
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parents:
diff changeset
281 /*
74212992fb08 Initial revision
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parents:
diff changeset
282 * The representation for software surfaces is independent of
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parents:
diff changeset
283 * per-surface alpha, so no need to invalidate the blit mapping
74212992fb08 Initial revision
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parents:
diff changeset
284 * if just the alpha value was changed. (If either is 255, we still
74212992fb08 Initial revision
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parents:
diff changeset
285 * need to invalidate.)
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parents:
diff changeset
286 */
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parents:
diff changeset
287 if((surface->flags & SDL_HWACCEL) == SDL_HWACCEL
74212992fb08 Initial revision
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parents:
diff changeset
288 || oldflags != surface->flags
74212992fb08 Initial revision
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parents:
diff changeset
289 || (((oldalpha + 1) ^ (value + 1)) & 0x100))
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parents:
diff changeset
290 SDL_InvalidateMap(surface->map);
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parents:
diff changeset
291 return(0);
74212992fb08 Initial revision
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parents:
diff changeset
292 }
431
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
293 int SDL_SetAlphaChannel(SDL_Surface *surface, Uint8 value)
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
294 {
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
295 int row, col;
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
296 int offset;
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
297 Uint8 *buf;
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
298
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
299 if ( (surface->format->Amask != 0xFF000000) &&
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
300 (surface->format->Amask != 0x000000FF) ) {
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
301 SDL_SetError("Unsupported surface alpha mask format");
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
302 return -1;
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
303 }
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
304
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
305 #if SDL_BYTEORDER == SDL_LIL_ENDIAN
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
306 if ( surface->format->Amask == 0xFF000000 ) {
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
307 offset = 3;
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
308 } else {
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
309 offset = 0;
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
310 }
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
311 #else
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
312 if ( surface->format->Amask == 0xFF000000 ) {
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
313 offset = 0;
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
314 } else {
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
315 offset = 3;
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
316 }
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
317 #endif /* Byte ordering */
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
318
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
319 /* Quickly set the alpha channel of an RGBA or ARGB surface */
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
320 if ( SDL_MUSTLOCK(surface) ) {
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
321 if ( SDL_LockSurface(surface) < 0 ) {
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
322 return -1;
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
323 }
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
324 }
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
325 row = surface->h;
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
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parents: 422
diff changeset
326 while (row--) {
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
327 col = surface->w;
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
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parents: 422
diff changeset
328 buf = (Uint8 *)surface->pixels + row * surface->pitch + offset;
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
329 while(col--) {
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
330 *buf = value;
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
331 buf += 4;
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
332 }
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
333 }
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
334 if ( SDL_MUSTLOCK(surface) ) {
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
335 SDL_UnlockSurface(surface);
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
336 }
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
337 return 0;
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
338 }
0
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parents:
diff changeset
339
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parents:
diff changeset
340 /*
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parents:
diff changeset
341 * A function to calculate the intersection of two rectangles:
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parents:
diff changeset
342 * return true if the rectangles intersect, false otherwise
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parents:
diff changeset
343 */
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parents:
diff changeset
344 static __inline__
130
14af14ff7c19 The rectangle argument to SDL_SetClipRect is really const
Sam Lantinga <slouken@libsdl.org>
parents: 0
diff changeset
345 SDL_bool SDL_IntersectRect(const SDL_Rect *A, const SDL_Rect *B, SDL_Rect *intersection)
0
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parents:
diff changeset
346 {
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parents:
diff changeset
347 int Amin, Amax, Bmin, Bmax;
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parents:
diff changeset
348
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parents:
diff changeset
349 /* Horizontal intersection */
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
350 Amin = A->x;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
351 Amax = Amin + A->w;
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parents:
diff changeset
352 Bmin = B->x;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
353 Bmax = Bmin + B->w;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
354 if(Bmin > Amin)
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parents:
diff changeset
355 Amin = Bmin;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
356 intersection->x = Amin;
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parents:
diff changeset
357 if(Bmax < Amax)
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parents:
diff changeset
358 Amax = Bmax;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
359 intersection->w = Amax - Amin > 0 ? Amax - Amin : 0;
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parents:
diff changeset
360
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parents:
diff changeset
361 /* Vertical intersection */
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parents:
diff changeset
362 Amin = A->y;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
363 Amax = Amin + A->h;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
364 Bmin = B->y;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
365 Bmax = Bmin + B->h;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
366 if(Bmin > Amin)
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
367 Amin = Bmin;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
368 intersection->y = Amin;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
369 if(Bmax < Amax)
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
370 Amax = Bmax;
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parents:
diff changeset
371 intersection->h = Amax - Amin > 0 ? Amax - Amin : 0;
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parents:
diff changeset
372
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parents:
diff changeset
373 return (intersection->w && intersection->h);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
374 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
375 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
376 * Set the clipping rectangle for a blittable surface
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
377 */
130
14af14ff7c19 The rectangle argument to SDL_SetClipRect is really const
Sam Lantinga <slouken@libsdl.org>
parents: 0
diff changeset
378 SDL_bool SDL_SetClipRect(SDL_Surface *surface, const SDL_Rect *rect)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
379 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
380 SDL_Rect full_rect;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
381
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
382 /* Don't do anything if there's no surface to act on */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
383 if ( ! surface ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
384 return SDL_FALSE;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
385 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
386
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
387 /* Set up the full surface rectangle */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
388 full_rect.x = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
389 full_rect.y = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
390 full_rect.w = surface->w;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
391 full_rect.h = surface->h;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
392
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
393 /* Set the clipping rectangle */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
394 if ( ! rect ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
395 surface->clip_rect = full_rect;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
396 return 1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
397 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
398 return SDL_IntersectRect(rect, &full_rect, &surface->clip_rect);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
399 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
400 void SDL_GetClipRect(SDL_Surface *surface, SDL_Rect *rect)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
401 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
402 if ( surface && rect ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
403 *rect = surface->clip_rect;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
404 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
405 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
406 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
407 * Set up a blit between two surfaces -- split into three parts:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
408 * The upper part, SDL_UpperBlit(), performs clipping and rectangle
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
409 * verification. The lower part is a pointer to a low level
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
410 * accelerated blitting function.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
411 *
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
412 * These parts are separated out and each used internally by this
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
413 * library in the optimimum places. They are exported so that if
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
414 * you know exactly what you are doing, you can optimize your code
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
415 * by calling the one(s) you need.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
416 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
417 int SDL_LowerBlit (SDL_Surface *src, SDL_Rect *srcrect,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
418 SDL_Surface *dst, SDL_Rect *dstrect)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
419 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
420 SDL_blit do_blit;
462
1be0cdaf8092 Fixed offset bug in hardware accelerated fills and blits
Sam Lantinga <slouken@libsdl.org>
parents: 441
diff changeset
421 SDL_Rect hw_srcrect;
1be0cdaf8092 Fixed offset bug in hardware accelerated fills and blits
Sam Lantinga <slouken@libsdl.org>
parents: 441
diff changeset
422 SDL_Rect hw_dstrect;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
423
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
424 /* Check to make sure the blit mapping is valid */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
425 if ( (src->map->dst != dst) ||
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
426 (src->map->dst->format_version != src->map->format_version) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
427 if ( SDL_MapSurface(src, dst) < 0 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
428 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
429 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
430 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
431
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
432 /* Figure out which blitter to use */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
433 if ( (src->flags & SDL_HWACCEL) == SDL_HWACCEL ) {
462
1be0cdaf8092 Fixed offset bug in hardware accelerated fills and blits
Sam Lantinga <slouken@libsdl.org>
parents: 441
diff changeset
434 if ( src == SDL_VideoSurface ) {
519
c7da0cd5ae5e *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 462
diff changeset
435 hw_srcrect = *srcrect;
462
1be0cdaf8092 Fixed offset bug in hardware accelerated fills and blits
Sam Lantinga <slouken@libsdl.org>
parents: 441
diff changeset
436 hw_srcrect.x += current_video->offset_x;
1be0cdaf8092 Fixed offset bug in hardware accelerated fills and blits
Sam Lantinga <slouken@libsdl.org>
parents: 441
diff changeset
437 hw_srcrect.y += current_video->offset_y;
1be0cdaf8092 Fixed offset bug in hardware accelerated fills and blits
Sam Lantinga <slouken@libsdl.org>
parents: 441
diff changeset
438 srcrect = &hw_srcrect;
1be0cdaf8092 Fixed offset bug in hardware accelerated fills and blits
Sam Lantinga <slouken@libsdl.org>
parents: 441
diff changeset
439 }
1be0cdaf8092 Fixed offset bug in hardware accelerated fills and blits
Sam Lantinga <slouken@libsdl.org>
parents: 441
diff changeset
440 if ( dst == SDL_VideoSurface ) {
1be0cdaf8092 Fixed offset bug in hardware accelerated fills and blits
Sam Lantinga <slouken@libsdl.org>
parents: 441
diff changeset
441 hw_dstrect = *dstrect;
1be0cdaf8092 Fixed offset bug in hardware accelerated fills and blits
Sam Lantinga <slouken@libsdl.org>
parents: 441
diff changeset
442 hw_dstrect.x += current_video->offset_x;
1be0cdaf8092 Fixed offset bug in hardware accelerated fills and blits
Sam Lantinga <slouken@libsdl.org>
parents: 441
diff changeset
443 hw_dstrect.y += current_video->offset_y;
1be0cdaf8092 Fixed offset bug in hardware accelerated fills and blits
Sam Lantinga <slouken@libsdl.org>
parents: 441
diff changeset
444 dstrect = &hw_dstrect;
1be0cdaf8092 Fixed offset bug in hardware accelerated fills and blits
Sam Lantinga <slouken@libsdl.org>
parents: 441
diff changeset
445 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
446 do_blit = src->map->hw_blit;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
447 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
448 do_blit = src->map->sw_blit;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
449 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
450 return(do_blit(src, srcrect, dst, dstrect));
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
451 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
452
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
453
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
454 int SDL_UpperBlit (SDL_Surface *src, SDL_Rect *srcrect,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
455 SDL_Surface *dst, SDL_Rect *dstrect)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
456 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
457 SDL_Rect fulldst;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
458 int srcx, srcy, w, h;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
459
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
460 /* Make sure the surfaces aren't locked */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
461 if ( ! src || ! dst ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
462 SDL_SetError("SDL_UpperBlit: passed a NULL surface");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
463 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
464 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
465 if ( src->locked || dst->locked ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
466 SDL_SetError("Surfaces must not be locked during blit");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
467 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
468 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
469
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
470 /* If the destination rectangle is NULL, use the entire dest surface */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
471 if ( dstrect == NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
472 fulldst.x = fulldst.y = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
473 dstrect = &fulldst;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
474 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
475
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
476 /* clip the source rectangle to the source surface */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
477 if(srcrect) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
478 int maxw, maxh;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
479
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
480 srcx = srcrect->x;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
481 w = srcrect->w;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
482 if(srcx < 0) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
483 w += srcx;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
484 dstrect->x -= srcx;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
485 srcx = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
486 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
487 maxw = src->w - srcx;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
488 if(maxw < w)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
489 w = maxw;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
490
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
491 srcy = srcrect->y;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
492 h = srcrect->h;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
493 if(srcy < 0) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
494 h += srcy;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
495 dstrect->y -= srcy;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
496 srcy = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
497 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
498 maxh = src->h - srcy;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
499 if(maxh < h)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
500 h = maxh;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
501
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
502 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
503 srcx = srcy = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
504 w = src->w;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
505 h = src->h;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
506 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
507
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
508 /* clip the destination rectangle against the clip rectangle */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
509 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
510 SDL_Rect *clip = &dst->clip_rect;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
511 int dx, dy;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
512
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
513 dx = clip->x - dstrect->x;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
514 if(dx > 0) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
515 w -= dx;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
516 dstrect->x += dx;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
517 srcx += dx;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
518 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
519 dx = dstrect->x + w - clip->x - clip->w;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
520 if(dx > 0)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
521 w -= dx;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
522
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
523 dy = clip->y - dstrect->y;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
524 if(dy > 0) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
525 h -= dy;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
526 dstrect->y += dy;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
527 srcy += dy;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
528 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
529 dy = dstrect->y + h - clip->y - clip->h;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
530 if(dy > 0)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
531 h -= dy;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
532 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
533
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
534 if(w > 0 && h > 0) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
535 SDL_Rect sr;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
536 sr.x = srcx;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
537 sr.y = srcy;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
538 sr.w = dstrect->w = w;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
539 sr.h = dstrect->h = h;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
540 return SDL_LowerBlit(src, &sr, dst, dstrect);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
541 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
542 dstrect->w = dstrect->h = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
543 return 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
544 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
545
532
058d47b7a3b4 Return an error with color fills on less than 8 bpp surfaces.
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
546 static int SDL_FillRect1(SDL_Surface *dst, SDL_Rect *dstrect, Uint32 color)
058d47b7a3b4 Return an error with color fills on less than 8 bpp surfaces.
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
547 {
058d47b7a3b4 Return an error with color fills on less than 8 bpp surfaces.
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
548 /* FIXME: We have to worry about packing order.. *sigh* */
058d47b7a3b4 Return an error with color fills on less than 8 bpp surfaces.
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
549 SDL_SetError("1-bpp rect fill not yet implemented");
058d47b7a3b4 Return an error with color fills on less than 8 bpp surfaces.
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
550 return -1;
058d47b7a3b4 Return an error with color fills on less than 8 bpp surfaces.
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
551 }
058d47b7a3b4 Return an error with color fills on less than 8 bpp surfaces.
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
552
058d47b7a3b4 Return an error with color fills on less than 8 bpp surfaces.
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
553 static int SDL_FillRect4(SDL_Surface *dst, SDL_Rect *dstrect, Uint32 color)
058d47b7a3b4 Return an error with color fills on less than 8 bpp surfaces.
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
554 {
058d47b7a3b4 Return an error with color fills on less than 8 bpp surfaces.
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
555 /* FIXME: We have to worry about packing order.. *sigh* */
058d47b7a3b4 Return an error with color fills on less than 8 bpp surfaces.
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
556 SDL_SetError("4-bpp rect fill not yet implemented");
058d47b7a3b4 Return an error with color fills on less than 8 bpp surfaces.
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
557 return -1;
058d47b7a3b4 Return an error with color fills on less than 8 bpp surfaces.
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
558 }
058d47b7a3b4 Return an error with color fills on less than 8 bpp surfaces.
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
559
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
560 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
561 * This function performs a fast fill of the given rectangle with 'color'
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
562 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
563 int SDL_FillRect(SDL_Surface *dst, SDL_Rect *dstrect, Uint32 color)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
564 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
565 SDL_VideoDevice *video = current_video;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
566 SDL_VideoDevice *this = current_video;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
567 int x, y;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
568 Uint8 *row;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
569
532
058d47b7a3b4 Return an error with color fills on less than 8 bpp surfaces.
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
570 /* This function doesn't work on surfaces < 8 bpp */
058d47b7a3b4 Return an error with color fills on less than 8 bpp surfaces.
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
571 if ( dst->format->BitsPerPixel < 8 ) {
058d47b7a3b4 Return an error with color fills on less than 8 bpp surfaces.
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
572 switch(dst->format->BitsPerPixel) {
058d47b7a3b4 Return an error with color fills on less than 8 bpp surfaces.
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
573 case 1:
058d47b7a3b4 Return an error with color fills on less than 8 bpp surfaces.
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
574 return SDL_FillRect1(dst, dstrect, color);
058d47b7a3b4 Return an error with color fills on less than 8 bpp surfaces.
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
575 break;
058d47b7a3b4 Return an error with color fills on less than 8 bpp surfaces.
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
576 case 4:
058d47b7a3b4 Return an error with color fills on less than 8 bpp surfaces.
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
577 return SDL_FillRect4(dst, dstrect, color);
058d47b7a3b4 Return an error with color fills on less than 8 bpp surfaces.
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
578 break;
058d47b7a3b4 Return an error with color fills on less than 8 bpp surfaces.
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
579 default:
058d47b7a3b4 Return an error with color fills on less than 8 bpp surfaces.
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
580 SDL_SetError("Fill rect on unsupported surface format");
058d47b7a3b4 Return an error with color fills on less than 8 bpp surfaces.
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
581 return(-1);
058d47b7a3b4 Return an error with color fills on less than 8 bpp surfaces.
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
582 break;
058d47b7a3b4 Return an error with color fills on less than 8 bpp surfaces.
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
583 }
058d47b7a3b4 Return an error with color fills on less than 8 bpp surfaces.
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
584 }
058d47b7a3b4 Return an error with color fills on less than 8 bpp surfaces.
Sam Lantinga <slouken@libsdl.org>
parents: 526
diff changeset
585
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
586 /* If 'dstrect' == NULL, then fill the whole surface */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
587 if ( dstrect ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
588 /* Perform clipping */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
589 if ( !SDL_IntersectRect(dstrect, &dst->clip_rect, dstrect) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
590 return(0);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
591 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
592 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
593 dstrect = &dst->clip_rect;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
594 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
595
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
596 /* Check for hardware acceleration */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
597 if ( ((dst->flags & SDL_HWSURFACE) == SDL_HWSURFACE) &&
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
598 video->info.blit_fill ) {
462
1be0cdaf8092 Fixed offset bug in hardware accelerated fills and blits
Sam Lantinga <slouken@libsdl.org>
parents: 441
diff changeset
599 SDL_Rect hw_rect;
1be0cdaf8092 Fixed offset bug in hardware accelerated fills and blits
Sam Lantinga <slouken@libsdl.org>
parents: 441
diff changeset
600 if ( dst == SDL_VideoSurface ) {
1be0cdaf8092 Fixed offset bug in hardware accelerated fills and blits
Sam Lantinga <slouken@libsdl.org>
parents: 441
diff changeset
601 hw_rect = *dstrect;
1be0cdaf8092 Fixed offset bug in hardware accelerated fills and blits
Sam Lantinga <slouken@libsdl.org>
parents: 441
diff changeset
602 hw_rect.x += current_video->offset_x;
1be0cdaf8092 Fixed offset bug in hardware accelerated fills and blits
Sam Lantinga <slouken@libsdl.org>
parents: 441
diff changeset
603 hw_rect.y += current_video->offset_y;
1be0cdaf8092 Fixed offset bug in hardware accelerated fills and blits
Sam Lantinga <slouken@libsdl.org>
parents: 441
diff changeset
604 dstrect = &hw_rect;
1be0cdaf8092 Fixed offset bug in hardware accelerated fills and blits
Sam Lantinga <slouken@libsdl.org>
parents: 441
diff changeset
605 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
606 return(video->FillHWRect(this, dst, dstrect, color));
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
607 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
608
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
609 /* Perform software fill */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
610 if ( SDL_LockSurface(dst) != 0 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
611 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
612 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
613 row = (Uint8 *)dst->pixels+dstrect->y*dst->pitch+
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
614 dstrect->x*dst->format->BytesPerPixel;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
615 if ( dst->format->palette || (color == 0) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
616 x = dstrect->w*dst->format->BytesPerPixel;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
617 if ( !color && !((long)row&3) && !(x&3) && !(dst->pitch&3) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
618 int n = x >> 2;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
619 for ( y=dstrect->h; y; --y ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
620 SDL_memset4(row, 0, n);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
621 row += dst->pitch;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
622 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
623 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
624 #ifdef __powerpc__
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
625 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
626 * memset() on PPC (both glibc and codewarrior) uses
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
627 * the dcbz (Data Cache Block Zero) instruction, which
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
628 * causes an alignment exception if the destination is
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
629 * uncachable, so only use it on software surfaces
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
630 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
631 if((dst->flags & SDL_HWSURFACE) == SDL_HWSURFACE) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
632 if(dstrect->w >= 8) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
633 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
634 * 64-bit stores are probably most
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
635 * efficient to uncached video memory
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
636 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
637 double fill;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
638 memset(&fill, color, (sizeof fill));
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
639 for(y = dstrect->h; y; y--) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
640 Uint8 *d = row;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
641 unsigned n = x;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
642 unsigned nn;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
643 Uint8 c = color;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
644 double f = fill;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
645 while((unsigned long)d
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
646 & (sizeof(double) - 1)) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
647 *d++ = c;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
648 n--;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
649 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
650 nn = n / (sizeof(double) * 4);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
651 while(nn) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
652 ((double *)d)[0] = f;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
653 ((double *)d)[1] = f;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
654 ((double *)d)[2] = f;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
655 ((double *)d)[3] = f;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
656 d += 4*sizeof(double);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
657 nn--;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
658 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
659 n &= ~(sizeof(double) * 4 - 1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
660 nn = n / sizeof(double);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
661 while(nn) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
662 *(double *)d = f;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
663 d += sizeof(double);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
664 nn--;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
665 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
666 n &= ~(sizeof(double) - 1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
667 while(n) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
668 *d++ = c;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
669 n--;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
670 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
671 row += dst->pitch;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
672 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
673 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
674 /* narrow boxes */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
675 for(y = dstrect->h; y; y--) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
676 Uint8 *d = row;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
677 Uint8 c = color;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
678 int n = x;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
679 while(n) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
680 *d++ = c;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
681 n--;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
682 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
683 row += dst->pitch;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
684 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
685 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
686 } else
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
687 #endif /* __powerpc__ */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
688 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
689 for(y = dstrect->h; y; y--) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
690 memset(row, color, x);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
691 row += dst->pitch;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
692 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
693 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
694 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
695 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
696 switch (dst->format->BytesPerPixel) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
697 case 2:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
698 for ( y=dstrect->h; y; --y ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
699 Uint16 *pixels = (Uint16 *)row;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
700 Uint16 c = color;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
701 Uint32 cc = (Uint32)c << 16 | c;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
702 int n = dstrect->w;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
703 if((unsigned long)pixels & 3) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
704 *pixels++ = c;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
705 n--;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
706 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
707 if(n >> 1)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
708 SDL_memset4(pixels, cc, n >> 1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
709 if(n & 1)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
710 pixels[n - 1] = c;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
711 row += dst->pitch;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
712 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
713 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
714
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
715 case 3:
1155
91569ec25acd Fixed some compiler warnings about "unreachable code" on Watcom C.
Ryan C. Gordon <icculus@icculus.org>
parents: 1052
diff changeset
716 #if SDL_BYTEORDER == SDL_BIG_ENDIAN
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
717 color <<= 8;
1155
91569ec25acd Fixed some compiler warnings about "unreachable code" on Watcom C.
Ryan C. Gordon <icculus@icculus.org>
parents: 1052
diff changeset
718 #endif
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
719 for ( y=dstrect->h; y; --y ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
720 Uint8 *pixels = row;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
721 for ( x=dstrect->w; x; --x ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
722 memcpy(pixels, &color, 3);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
723 pixels += 3;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
724 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
725 row += dst->pitch;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
726 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
727 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
728
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
729 case 4:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
730 for(y = dstrect->h; y; --y) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
731 SDL_memset4(row, color, dstrect->w);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
732 row += dst->pitch;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
733 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
734 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
735 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
736 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
737 SDL_UnlockSurface(dst);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
738
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
739 /* We're done! */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
740 return(0);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
741 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
742
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
743 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
744 * Lock a surface to directly access the pixels
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
745 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
746 int SDL_LockSurface (SDL_Surface *surface)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
747 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
748 if ( ! surface->locked ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
749 /* Perform the lock */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
750 if ( surface->flags & (SDL_HWSURFACE|SDL_ASYNCBLIT) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
751 SDL_VideoDevice *video = current_video;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
752 SDL_VideoDevice *this = current_video;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
753 if ( video->LockHWSurface(this, surface) < 0 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
754 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
755 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
756 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
757 if ( surface->flags & SDL_RLEACCEL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
758 SDL_UnRLESurface(surface, 1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
759 surface->flags |= SDL_RLEACCEL; /* save accel'd state */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
760 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
761 /* This needs to be done here in case pixels changes value */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
762 surface->pixels = (Uint8 *)surface->pixels + surface->offset;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
763 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
764
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
765 /* Increment the surface lock count, for recursive locks */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
766 ++surface->locked;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
767
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
768 /* Ready to go.. */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
769 return(0);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
770 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
771 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
772 * Unlock a previously locked surface
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
773 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
774 void SDL_UnlockSurface (SDL_Surface *surface)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
775 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
776 /* Only perform an unlock if we are locked */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
777 if ( ! surface->locked || (--surface->locked > 0) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
778 return;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
779 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
780
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
781 /* Perform the unlock */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
782 surface->pixels = (Uint8 *)surface->pixels - surface->offset;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
783
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
784 /* Unlock hardware or accelerated surfaces */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
785 if ( surface->flags & (SDL_HWSURFACE|SDL_ASYNCBLIT) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
786 SDL_VideoDevice *video = current_video;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
787 SDL_VideoDevice *this = current_video;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
788 video->UnlockHWSurface(this, surface);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
789 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
790 /* Update RLE encoded surface with new data */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
791 if ( (surface->flags & SDL_RLEACCEL) == SDL_RLEACCEL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
792 surface->flags &= ~SDL_RLEACCEL; /* stop lying */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
793 SDL_RLESurface(surface);
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 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
797
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
798 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
799 * Convert a surface into the specified pixel format.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
800 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
801 SDL_Surface * SDL_ConvertSurface (SDL_Surface *surface,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
802 SDL_PixelFormat *format, Uint32 flags)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
803 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
804 SDL_Surface *convert;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
805 Uint32 colorkey = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
806 Uint8 alpha = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
807 Uint32 surface_flags;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
808 SDL_Rect bounds;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
809
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
810 /* Check for empty destination palette! (results in empty image) */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
811 if ( format->palette != NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
812 int i;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
813 for ( i=0; i<format->palette->ncolors; ++i ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
814 if ( (format->palette->colors[i].r != 0) ||
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
815 (format->palette->colors[i].g != 0) ||
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
816 (format->palette->colors[i].b != 0) )
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
817 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
818 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
819 if ( i == format->palette->ncolors ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
820 SDL_SetError("Empty destination palette");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
821 return(NULL);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
822 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
823 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
824
264
c9cd3b564e4b *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 252
diff changeset
825 /* Only create hw surfaces with alpha channel if hw alpha blits
c9cd3b564e4b *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 252
diff changeset
826 are supported */
c9cd3b564e4b *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 252
diff changeset
827 if(format->Amask != 0 && (flags & SDL_HWSURFACE)) {
c9cd3b564e4b *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 252
diff changeset
828 const SDL_VideoInfo *vi = SDL_GetVideoInfo();
c9cd3b564e4b *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 252
diff changeset
829 if(!vi || !vi->blit_hw_A)
c9cd3b564e4b *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 252
diff changeset
830 flags &= ~SDL_HWSURFACE;
c9cd3b564e4b *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 252
diff changeset
831 }
c9cd3b564e4b *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 252
diff changeset
832
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
833 /* Create a new surface with the desired format */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
834 convert = SDL_CreateRGBSurface(flags,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
835 surface->w, surface->h, format->BitsPerPixel,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
836 format->Rmask, format->Gmask, format->Bmask, format->Amask);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
837 if ( convert == NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
838 return(NULL);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
839 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
840
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
841 /* Copy the palette if any */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
842 if ( format->palette && convert->format->palette ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
843 memcpy(convert->format->palette->colors,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
844 format->palette->colors,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
845 format->palette->ncolors*sizeof(SDL_Color));
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
846 convert->format->palette->ncolors = format->palette->ncolors;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
847 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
848
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
849 /* Save the original surface color key and alpha */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
850 surface_flags = surface->flags;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
851 if ( (surface_flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
852 /* Convert colourkeyed surfaces to RGBA if requested */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
853 if((flags & SDL_SRCCOLORKEY) != SDL_SRCCOLORKEY
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
854 && format->Amask) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
855 surface_flags &= ~SDL_SRCCOLORKEY;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
856 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
857 colorkey = surface->format->colorkey;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
858 SDL_SetColorKey(surface, 0, 0);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
859 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
860 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
861 if ( (surface_flags & SDL_SRCALPHA) == SDL_SRCALPHA ) {
431
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
862 /* Copy over the alpha channel to RGBA if requested */
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
863 if ( format->Amask ) {
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
864 surface->flags &= ~SDL_SRCALPHA;
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
865 } else {
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
866 alpha = surface->format->alpha;
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
867 SDL_SetAlpha(surface, 0, 0);
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
868 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
869 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
870
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
871 /* Copy over the image data */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
872 bounds.x = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
873 bounds.y = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
874 bounds.w = surface->w;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
875 bounds.h = surface->h;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
876 SDL_LowerBlit(surface, &bounds, convert, &bounds);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
877
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
878 /* Clean up the original surface, and update converted surface */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
879 if ( convert != NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
880 SDL_SetClipRect(convert, &surface->clip_rect);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
881 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
882 if ( (surface_flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
883 Uint32 cflags = surface_flags&(SDL_SRCCOLORKEY|SDL_RLEACCELOK);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
884 if ( convert != NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
885 Uint8 keyR, keyG, keyB;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
886
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
887 SDL_GetRGB(colorkey,surface->format,&keyR,&keyG,&keyB);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
888 SDL_SetColorKey(convert, cflags|(flags&SDL_RLEACCELOK),
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
889 SDL_MapRGB(convert->format, keyR, keyG, keyB));
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
890 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
891 SDL_SetColorKey(surface, cflags, colorkey);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
892 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
893 if ( (surface_flags & SDL_SRCALPHA) == SDL_SRCALPHA ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
894 Uint32 aflags = surface_flags&(SDL_SRCALPHA|SDL_RLEACCELOK);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
895 if ( convert != NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
896 SDL_SetAlpha(convert, aflags|(flags&SDL_RLEACCELOK),
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
897 alpha);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
898 }
431
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
899 if ( format->Amask ) {
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
900 surface->flags |= SDL_SRCALPHA;
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
901 } else {
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
902 SDL_SetAlpha(surface, aflags, alpha);
41cadcba32e8 Fixed SDL_DisplayFormatAlpha() on RGB surfaces with alpha
Sam Lantinga <slouken@libsdl.org>
parents: 422
diff changeset
903 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
904 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
905
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
906 /* We're ready to go! */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
907 return(convert);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
908 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
909
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
910 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
911 * Free a surface created by the above function.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
912 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
913 void SDL_FreeSurface (SDL_Surface *surface)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
914 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
915 /* Free anything that's not NULL, and not the screen surface */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
916 if ((surface == NULL) ||
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
917 (current_video &&
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
918 ((surface == SDL_ShadowSurface)||(surface == SDL_VideoSurface)))) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
919 return;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
920 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
921 if ( --surface->refcount > 0 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
922 return;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
923 }
915
01cddd0f2efb You can't free locked surfaces!
Sam Lantinga <slouken@libsdl.org>
parents: 845
diff changeset
924 while ( surface->locked > 0 ) {
01cddd0f2efb You can't free locked surfaces!
Sam Lantinga <slouken@libsdl.org>
parents: 845
diff changeset
925 SDL_UnlockSurface(surface);
01cddd0f2efb You can't free locked surfaces!
Sam Lantinga <slouken@libsdl.org>
parents: 845
diff changeset
926 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
927 if ( (surface->flags & SDL_RLEACCEL) == SDL_RLEACCEL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
928 SDL_UnRLESurface(surface, 0);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
929 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
930 if ( surface->format ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
931 SDL_FreeFormat(surface->format);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
932 surface->format = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
933 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
934 if ( surface->map != NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
935 SDL_FreeBlitMap(surface->map);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
936 surface->map = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
937 }
422
b1b9ee41be70 Memory leak fix for DirectX software surfaces
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
938 if ( surface->hwdata ) {
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
939 SDL_VideoDevice *video = current_video;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
940 SDL_VideoDevice *this = current_video;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
941 video->FreeHWSurface(this, surface);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
942 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
943 if ( surface->pixels &&
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
944 ((surface->flags & SDL_PREALLOC) != SDL_PREALLOC) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
945 free(surface->pixels);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
946 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
947 free(surface);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
948 #ifdef CHECK_LEAKS
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
949 --surfaces_allocated;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
950 #endif
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
951 }