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video: SDL_GL_GetAttribute gets correct SDL_GL_CONTEXT_RELEASE_BEHAVIOR value.

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Original patch was from @ramezgerges (thanks!).

Fixes #11697.
This commit is contained in:
Ryan C. Gordon
2025-01-16 00:10:07 -05:00
parent 05877f2cea
commit 3424ec948c
1 changed files with 13 additions and 7 deletions
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20
src/video/SDL_video.c
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@@ -51,10 +51,14 @@
#include <SDL3/SDL_opengles2.h>
#endif // SDL_VIDEO_OPENGL_ES2 && !SDL_VIDEO_OPENGL
#ifndef SDL_VIDEO_OPENGL
#ifndef GL_CONTEXT_RELEASE_BEHAVIOR_KHR
#define GL_CONTEXT_RELEASE_BEHAVIOR_KHR 0x82FB
// GL_CONTEXT_RELEASE_BEHAVIOR and GL_CONTEXT_RELEASE_BEHAVIOR_KHR have the same number.
#ifndef GL_CONTEXT_RELEASE_BEHAVIOR
#define GL_CONTEXT_RELEASE_BEHAVIOR 0x82FB
#endif
// GL_CONTEXT_RELEASE_BEHAVIOR_FLUSH and GL_CONTEXT_RELEASE_BEHAVIOR_FLUSH_KHR have the same number.
#ifndef GL_CONTEXT_RELEASE_BEHAVIOR_FLUSH
#define GL_CONTEXT_RELEASE_BEHAVIOR_FLUSH 0x82FC
#endif
#ifdef SDL_PLATFORM_EMSCRIPTEN
@@ -4820,11 +4824,7 @@ bool SDL_GL_GetAttribute(SDL_GLAttr attr, int *value)
attrib = GL_SAMPLES;
break;
case SDL_GL_CONTEXT_RELEASE_BEHAVIOR:
#ifdef SDL_VIDEO_OPENGL
attrib = GL_CONTEXT_RELEASE_BEHAVIOR;
#else
attrib = GL_CONTEXT_RELEASE_BEHAVIOR_KHR;
#endif
break;
case SDL_GL_BUFFER_SIZE:
{
@@ -4969,6 +4969,12 @@ bool SDL_GL_GetAttribute(SDL_GLAttr attr, int *value)
}
return SDL_SetError("OpenGL error: %08X", error);
}
// convert GL_CONTEXT_RELEASE_BEHAVIOR values back to SDL_GL_CONTEXT_RELEASE_BEHAVIOR values
if (attr == SDL_GL_CONTEXT_RELEASE_BEHAVIOR) {
*value = (*value == GL_CONTEXT_RELEASE_BEHAVIOR_FLUSH) ? SDL_GL_CONTEXT_RELEASE_BEHAVIOR_FLUSH : SDL_GL_CONTEXT_RELEASE_BEHAVIOR_NONE;
}
return true;
#else
return SDL_Unsupported();