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Diffstat (limited to 'src/gallium/docs')
| -rw-r--r-- | src/gallium/docs/source/tgsi.rst | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/gallium/docs/source/tgsi.rst b/src/gallium/docs/source/tgsi.rst index 274646703b4..551e9dd379f 100644 --- a/src/gallium/docs/source/tgsi.rst +++ b/src/gallium/docs/source/tgsi.rst @@ -2479,6 +2479,18 @@ after lookup. NOTE: no driver has implemented this opcode yet (and no state tracker emits it). This information is subject to change. +.. opcode:: LOD - level of detail + + Same syntax as the SAMPLE opcode but instead of performing an actual + texture lookup/filter, return the computed LOD information that the + texture pipe would use to access the texture. The Y component contains + the computed LOD lambda_prime. The X component contains the LOD that will + be accessed, based on min/max lod's and mipmap filters. + The Z and W components are set to 0. + + Syntax: ``LOD dst, address, sampler_view, sampler`` + + .. _resourceopcodes: Resource Access Opcodes |