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authorMarek Olšák <[email protected]>2014-06-14 03:19:26 +0200
committerMarek Olšák <[email protected]>2014-06-19 00:17:36 +0200
commit1df7199fc933facf2e74304976c3798e474929a1 (patch)
tree207d31eb6a4406f0183c579f2dcf68baded74abb /src/gallium/docs/source/tgsi.rst
parent552c70a837b68124a8cd85873d45075fa17659f4 (diff)
gallium: implement ARB_texture_query_levels
The extension is always supported if GLSL 1.30 is supported. Softpipe and llvmpipe support is also added (trivial). Radeon and nouveau support is already done. Reviewed-by: Roland Scheidegger <[email protected]>
Diffstat (limited to 'src/gallium/docs/source/tgsi.rst')
-rw-r--r--src/gallium/docs/source/tgsi.rst6
1 files changed, 5 insertions, 1 deletions
diff --git a/src/gallium/docs/source/tgsi.rst b/src/gallium/docs/source/tgsi.rst
index 2ca3c3bbb5d..2130e0893f8 100644
--- a/src/gallium/docs/source/tgsi.rst
+++ b/src/gallium/docs/source/tgsi.rst
@@ -964,7 +964,9 @@ XXX doesn't look like most of the opcodes really belong here.
As per NV_gpu_program4, retrieve the dimensions of the texture depending on
the target. For 1D (width), 2D/RECT/CUBE (width, height), 3D (width, height,
- depth), 1D array (width, layers), 2D array (width, height, layers)
+ depth), 1D array (width, layers), 2D array (width, height, layers).
+ Also return the number of accessible levels (last_level - first_level + 1)
+ in W.
.. math::
@@ -976,6 +978,8 @@ XXX doesn't look like most of the opcodes really belong here.
dst.z = texture\_depth(unit, lod)
+ dst.w = texture\_levels(unit)
+
.. opcode:: TG4 - Texture Gather
As per ARB_texture_gather, gathers the four texels to be used in a bi-linear