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authorEric Anholt <eric@anholt.net>2009-08-11 12:31:01 -0700
committerEric Anholt <eric@anholt.net>2009-08-12 11:28:34 -0700
commit2708ddfb06a36d8568e2aa130bf1f7d551fcd309 (patch)
treef70549bf497750fc2f865d846069d504852bc014 /src/glu
parentef3ad412c746203727324edbd4cbe04079332d7c (diff)
vbo: Avoid extra validation of DrawElements.
This saves mapping the index buffer to get a bounds on the indices that drivers just drop on the floor in the VBO case (cache win), saves a bonus walk of the indices in the CheckArrayBounds case, and other miscellaneous validation. On intel it's a particularly a large win (50-100% in my app) because even though we let the indices stay in both CPU and GPU caches, we still end up waiting for the GPU to be done with the buffer before reading from it. Drivers that want the min/max_index fields must now check index_bounds_valid and use vbo_get_minmax_index before using them.
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