From 6fb12bf031fdceadebc8a3d7b7756bc822fbf6e4 Mon Sep 17 00:00:00 2001 From: Dave Airlie Date: Thu, 25 Aug 2011 13:03:19 +0100 Subject: [PATCH] tgsi: update tgsi.rst for TXQ add some info on the TXQ opcode. Signed-off-by: Dave Airlie --- src/gallium/docs/source/tgsi.rst | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) diff --git a/src/gallium/docs/source/tgsi.rst b/src/gallium/docs/source/tgsi.rst index 4debcc6ecc4..039cb1c03d5 100644 --- a/src/gallium/docs/source/tgsi.rst +++ b/src/gallium/docs/source/tgsi.rst @@ -1031,9 +1031,21 @@ XXX so let's discuss it, yeah? TBD -.. opcode:: TXQ - Texture Size Query +.. opcode:: TXQ - Texture Size Query (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) - TBD +.. math:: + + lod = src0 + + dst.x = texture_width(unit, lod) + + dst.y = texture_height(unit, lod) + + dst.z = texture_depth(unit, lod) .. opcode:: CONT - Continue -- 2.30.2