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r600g: document why texture offset emulation is needed

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This commit is contained in:
Marek Olšák 2014-03-10 00:19:21 +01:00
parent 897f40f25d
commit 9c2a3934c5
1 changed files with 2 additions and 1 deletions
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3
src/gallium/drivers/r600/r600_shader.c
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@ -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) {