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Allow setting of GL_CONTEXT_RELEASE_BEHAVIOR when creating the GL context when GLX_ARB_context_flush_control is available.

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This extension allows the user to specify whether a full flush is performed when making a context not current.
The only way to set this currently is at context creation, so this patch provides that functionality.
Defualt behaviour is set at FLUSH, as per the spec.

This patch does not contain the changes to WGL, appleGL or other platforms as I do not have access to GL 4.5 hardware on those platforms.

Full details on the use of KHR_context_flush_control can be found here:
https://www.opengl.org/registry/specs/KHR/context_flush_control.txt
This commit is contained in:
Marc Di Luzio 2015-03-06 16:03:40 +00:00
parent 2de05b5d5c
commit ec0e5f1a73
6 changed files with 49 additions and 3 deletions
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5
include/SDL_opengl_glext.h
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@ -2988,6 +2988,11 @@ GLAPI GLboolean APIENTRY glIsProgramARB (GLuint program);
#define GL_ARB_framebuffer_sRGB 1
#endif /* GL_ARB_framebuffer_sRGB */
#ifndef GL_KHR_context_flush_control
#define GL_CONTEXT_RELEASE_BEHAVIOR 0x82FB
#define GL_CONTEXT_RELEASE_BEHAVIOR_FLUSH 0x82FC
#endif /* GL_KHR_context_flush_control */
#ifndef GL_ARB_geometry_shader4
#define GL_ARB_geometry_shader4 1
#define GL_LINES_ADJACENCY_ARB 0x000A