diff options
| author | Kenneth Graunke <[email protected]> | 2013-01-21 21:24:34 -0800 |
|---|---|---|
| committer | Kenneth Graunke <[email protected]> | 2013-01-24 15:19:08 -0800 |
| commit | fce9e5d41bb1d80885d430d0484e9bd46d8ab936 (patch) | |
| tree | f1807f8db522a2973fe85b9ea8741930123c47b2 /src/mesa | |
| parent | 0412864ae83c0a73b611c81611643994076d503c (diff) | |
i965/vs: Do headerless texturing for texelFetchOffset().
For texelFetchOffset(), we just add the texel offsets to the coordinate
rather than using the message header's offset fields. So we don't
actually need a header on Gen5+.
Signed-off-by: Kenneth Graunke <[email protected]>
Reviewed-by: Eric Anholt <[email protected]>
Diffstat (limited to 'src/mesa')
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp b/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp index ebf8990e64b..d9ff869f2da 100644 --- a/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp +++ b/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp @@ -1999,8 +1999,10 @@ vec4_visitor::visit(ir_texture *ir) assert(!"TXB is not valid for vertex shaders."); } + bool use_texture_offset = ir->offset != NULL && ir->op != ir_txf; + /* Texel offsets go in the message header; Gen4 also requires headers. */ - inst->header_present = ir->offset || intel->gen < 5; + inst->header_present = use_texture_offset || intel->gen < 5; inst->base_mrf = 2; inst->mlen = inst->header_present + 1; /* always at least one */ inst->sampler = sampler; @@ -2008,7 +2010,7 @@ vec4_visitor::visit(ir_texture *ir) inst->dst.writemask = WRITEMASK_XYZW; inst->shadow_compare = ir->shadow_comparitor != NULL; - if (ir->offset != NULL && ir->op != ir_txf) + if (use_texture_offset) inst->texture_offset = brw_texture_offset(ir->offset->as_constant()); /* MRF for the first parameter */ |