diff options
| author | Marek Olšák <[email protected]> | 2014-03-10 00:19:21 +0100 |
|---|---|---|
| committer | Marek Olšák <[email protected]> | 2014-03-10 00:19:59 +0100 |
| commit | 9c2a3934c5e039d996c721478eeb1fa3f956904e (patch) | |
| tree | 1ca3ebd10d845cdd8fdc7b9f97dc1cad46f547f6 /src/gallium/drivers/r600/r600_shader.c | |
| parent | 897f40f25d21af678b1b67c1a68c4a6722d19983 (diff) | |
r600g: document why texture offset emulation is needed
Diffstat (limited to 'src/gallium/drivers/r600/r600_shader.c')
| -rw-r--r-- | src/gallium/drivers/r600/r600_shader.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/gallium/drivers/r600/r600_shader.c b/src/gallium/drivers/r600/r600_shader.c index 0016d29a2a8..ddf79eee930 100644 --- a/src/gallium/drivers/r600/r600_shader.c +++ b/src/gallium/drivers/r600/r600_shader.c @@ -4800,8 +4800,9 @@ static int tgsi_tex(struct r600_shader_ctx *ctx) if (inst->Texture.NumOffsets) { assert(inst->Texture.NumOffsets == 1); + /* The texture offset feature doesn't work with the TXF instruction + * and must be emulated by adding the offset to the texture coordinates. */ if (txf_add_offsets) { - /* Add the offsets for texelFetch manually. */ const struct tgsi_texture_offset *off = inst->TexOffsets; switch (inst->Texture.Texture) { |