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GPU: check for blit support, using MSAA FBO's 

Used for reading off-screen buffers,
possible cause of failure for drivers that don't support it.
This commit is contained in:
Campbell Barton 2015-10-19 12:31:20 +11:00
parent a25892543a
commit 67e1c97350
Notes: blender-bot 2023-02-14 08:32:17 +01:00 
Referenced by issue #46868, Collada Exporter Crash
Referenced by issue #46496, OpenGL Render fails on Intel-4600, with Anti-aliasing
1 changed files with 6 additions and 2 deletions
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8
source/blender/gpu/intern/gpu_extensions.c
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@ -1450,8 +1450,12 @@ GPUOffScreen *GPU_offscreen_create(int width, int height, int samples, char err_
}
if (samples) {
if (!GL_EXT_framebuffer_multisample ||
!GLEW_ARB_texture_multisample)
if (!GLEW_EXT_framebuffer_multisample ||
!GLEW_ARB_texture_multisample ||
/* Only needed for GPU_offscreen_read_pixels.
* We could add an arg if we intend to use multi-samle
* offscreen buffers w/o reading their pixels */
!GLEW_EXT_framebuffer_blit)
{
samples = 0;
}