From 95254bbd2ddf0c6207a642604cc218ac9d711501 Mon Sep 17 00:00:00 2001 From: Brian Paul Date: Wed, 15 Sep 2010 13:56:00 -0600 Subject: [PATCH] tgsi: fix incorrect usage_mask for shadow tex instructions The shadow versions of the texture targets use an extra component (Z) to express distance from light source to the fragment. Fixes the shadowtex demo with llvmpipe. --- src/gallium/auxiliary/tgsi/tgsi_util.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/src/gallium/auxiliary/tgsi/tgsi_util.c b/src/gallium/auxiliary/tgsi/tgsi_util.c index 3ec54964169..08e7e89bd67 100644 --- a/src/gallium/auxiliary/tgsi/tgsi_util.c +++ b/src/gallium/auxiliary/tgsi/tgsi_util.c @@ -262,19 +262,20 @@ tgsi_util_get_inst_usage_mask(const struct tgsi_full_instruction *inst, case TGSI_OPCODE_TXL: case TGSI_OPCODE_TXP: if (src_idx == 0) { + /* Note that the SHADOW variants use the Z component too */ switch (inst->Texture.Texture) { case TGSI_TEXTURE_1D: - case TGSI_TEXTURE_SHADOW1D: read_mask = TGSI_WRITEMASK_X; break; - + case TGSI_TEXTURE_SHADOW1D: + read_mask = TGSI_WRITEMASK_XZ; + break; case TGSI_TEXTURE_2D: case TGSI_TEXTURE_RECT: - case TGSI_TEXTURE_SHADOW2D: - case TGSI_TEXTURE_SHADOWRECT: read_mask = TGSI_WRITEMASK_XY; break; - + case TGSI_TEXTURE_SHADOW2D: + case TGSI_TEXTURE_SHADOWRECT: case TGSI_TEXTURE_3D: case TGSI_TEXTURE_CUBE: read_mask = TGSI_WRITEMASK_XYZ; -- 2.30.2