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@@ -18,6 +18,7 @@
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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+
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#include "SDL_internal.h"
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#if defined(SDL_PLATFORM_WIN32) || defined(SDL_PLATFORM_WINRT) || defined(SDL_PLATFORM_GDK)
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@@ -855,7 +856,9 @@ int SDL_GetCPUCacheLineSize(void)
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}
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}
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-static Uint32 SDL_CPUFeatures = 0xFFFFFFFF;
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+#define SDL_CPUFEATURES_RESET_VALUE 0xFFFFFFFF
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+
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+static Uint32 SDL_CPUFeatures = SDL_CPUFEATURES_RESET_VALUE;
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static Uint32 SDL_SIMDAlignment = 0xFFFFFFFF;
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static SDL_bool ref_string_equals(const char *ref, const char *test, const char *end_test) {
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@@ -865,10 +868,10 @@ static SDL_bool ref_string_equals(const char *ref, const char *test, const char
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static Uint32 SDLCALL SDL_CPUFeatureMaskFromHint(void)
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{
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- Uint32 result_mask = 0xFFFFFFFF;
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+ Uint32 result_mask = SDL_CPUFEATURES_RESET_VALUE;
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const char *hint = SDL_GetHint(SDL_HINT_CPU_FEATURE_MASK);
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-
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+
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if (hint) {
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for (const char *spot = hint, *next; *spot; spot = next) {
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const char *end = SDL_strchr(spot, ',');
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@@ -889,7 +892,7 @@ static Uint32 SDLCALL SDL_CPUFeatureMaskFromHint(void)
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spot += 1;
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}
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if (ref_string_equals("all", spot, end)) {
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- spot_mask = 0xFFFFFFFF;
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+ spot_mask = SDL_CPUFEATURES_RESET_VALUE;
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} else if (ref_string_equals("altivec", spot, end)) {
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spot_mask= CPU_HAS_ALTIVEC;
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} else if (ref_string_equals("mmx", spot, end)) {
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@@ -934,7 +937,7 @@ static Uint32 SDLCALL SDL_CPUFeatureMaskFromHint(void)
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static Uint32 SDL_GetCPUFeatures(void)
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{
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- if (SDL_CPUFeatures == 0xFFFFFFFF) {
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+ if (SDL_CPUFeatures == SDL_CPUFEATURES_RESET_VALUE) {
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CPU_calcCPUIDFeatures();
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SDL_CPUFeatures = 0;
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SDL_SIMDAlignment = sizeof(void *); /* a good safe base value */
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@@ -999,6 +1002,10 @@ static Uint32 SDL_GetCPUFeatures(void)
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return SDL_CPUFeatures;
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}
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+void SDL_QuitCPUInfo(void) {
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+ SDL_CPUFeatures = SDL_CPUFEATURES_RESET_VALUE;
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+}
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+
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#define CPU_FEATURE_AVAILABLE(f) ((SDL_GetCPUFeatures() & (f)) ? SDL_TRUE : SDL_FALSE)
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SDL_bool SDL_HasAltiVec(void)
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Anonymous Maarten