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| author | Ilia Mirkin <imirkin@alum.mit.edu> | 2015-09-10 21:37:23 -0400 |
|---|---|---|
| committer | Ilia Mirkin <imirkin@alum.mit.edu> | 2015-09-13 18:24:01 -0400 |
| commit | d173c5e77d239618e9609788e3d23ac9180a58a5 (patch) | |
| tree | 97926d5f4f69b65ba2d0531ffaac7ec7a7a49087 /src/gallium/docs | |
| parent | c4cf824658da283cf350fd6833d50dff9de4a1ad (diff) | |
| download | external_mesa3d-d173c5e77d239618e9609788e3d23ac9180a58a5.zip external_mesa3d-d173c5e77d239618e9609788e3d23ac9180a58a5.tar.gz external_mesa3d-d173c5e77d239618e9609788e3d23ac9180a58a5.tar.bz2 | |
tgsi: add a TXQS opcode to retrieve the number of texture samples
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Diffstat (limited to 'src/gallium/docs')
| -rw-r--r-- | src/gallium/docs/source/tgsi.rst | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/src/gallium/docs/source/tgsi.rst b/src/gallium/docs/source/tgsi.rst index 314c9ca..314fe1b 100644 --- a/src/gallium/docs/source/tgsi.rst +++ b/src/gallium/docs/source/tgsi.rst @@ -960,7 +960,6 @@ XXX doesn't look like most of the opcodes really belong here. For components which don't return a resource dimension, their value is undefined. - .. math:: lod = src0.x @@ -973,6 +972,17 @@ XXX doesn't look like most of the opcodes really belong here. dst.w = texture\_levels(unit) + +.. opcode:: TXQS - Texture Samples Query + + This retrieves the number of samples in the texture, and stores it + into the x component. The other components are undefined. + +.. math:: + + dst.x = texture\_samples(unit) + + .. opcode:: TG4 - Texture Gather As per ARB_texture_gather, gathers the four texels to be used in a bi-linear |