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comparison src/video/SDL_blit.c @ 2250:e1d228456537

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Fixed a few compiler warnings. Added SDL_blit_copy.c to the Visual C++ project The SSE and MMX intrinsics don't compile on Visual Studio yet...
author Sam Lantinga <slouken@libsdl.org>
date Thu, 16 Aug 2007 06:20:51 +0000
parents 5a58b57b6724
children 6d99edd791bf
comparison
equal deleted inserted replaced
2249:5a58b57b6724 2250:e1d228456537
137 { 137 {
138 int i; 138 int i;
139 static Uint32 features = 0xffffffff; 139 static Uint32 features = 0xffffffff;
140 140
141 if (features == 0xffffffff) { 141 if (features == 0xffffffff) {
142 const char *override = SDL_getenv("SDL_BLIT_FEATURES");
143
142 features = SDL_BLIT_ANY; 144 features = SDL_BLIT_ANY;
143 145
144 /* Provide an override for testing .. */ 146 /* Allow an override for testing .. */
145 const char *override = SDL_getenv("SDL_BLIT_FEATURES");
146 if (override) { 147 if (override) {
147 SDL_sscanf(override, "%u", &features); 148 SDL_sscanf(override, "%u", &features);
148 } else { 149 } else {
149 if (SDL_HasMMX()) { 150 if (SDL_HasMMX()) {
150 features |= SDL_BLIT_MMX; 151 features |= SDL_BLIT_MMX;
151 } 152 }
152 if (SDL_HasSSE()) { 153 if (SDL_HasSSE()) {
153 features |= SDL_BLIT_SSE; 154 features |= SDL_BLIT_SSE;
154 } 155 }
155 if (SDL_HasAltivec()) { 156 if (SDL_HasAltiVec()) {
156 if (SDL_UseAltivecPrefetch()) { 157 if (SDL_UseAltivecPrefetch()) {
157 features |= SDL_BLIT_ALTIVEC_PREFETCH; 158 features |= SDL_BLIT_ALTIVEC_PREFETCH;
158 } else { 159 } else {
159 features |= SDL_BLIT_ALTIVEC_NOPREFETCH; 160 features |= SDL_BLIT_ALTIVEC_NOPREFETCH;
160 } 161 }