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gl_nv_vertex_range
2010 Jan 15
0
More on GART vertex buffer corruption
...chipset.
First, I've looked into the behavior of the nVidia driver:
1. On all NV3x and NV4x traces, and my system, vertex buffers are
always put in VRAM (renouveau uses GL_STATIC_DRAW)
2. On my system all vertex object usage flags still cause the vertex
buffer to be put in VRAM
3. On my system GL_NV_vertex_range causes the use of a GART vertex
buffer, and seems the only way to do so
Note that statement 2 may not be true for all NV3x/NV4x cards.
It would be interesting to see the output of the attached renouveau
tests on other cards.
glFlushVertexArrayRangeNV does the following:
# 14 NOPs
00043710 size...