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i965: Generalize coord+offset lowering pass for ir_txf 

ir_txf expects an ivec* coordinate, and may be larger than ivec2;
shuffle things around so that this will work.

V2: Fix style nits, use ir_builder

Signed-off-by: Chris Forbes <chrisf@ijw.co.nz>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Chris Forbes 2013-10-13 00:02:55 +13:00
parent 72b5e9c42a
commit 06de9f8ff1
1 changed files with 26 additions and 3 deletions
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29
src/mesa/drivers/dri/i965/brw_lower_unnormalized_offset.cpp
View File

@ -52,11 +52,34 @@ public:
ir_visitor_status
brw_lower_unnormalized_offset_visitor::visit_leave(ir_texture *ir)
{
if (ir->sampler->type->sampler_dimensionality != GLSL_SAMPLER_DIM_RECT ||
!ir->offset || ir->op != ir_tg4)
if (!ir->offset)
return visit_continue;
ir->coordinate = add(ir->coordinate, i2f(ir->offset));
if (ir->op == ir_tg4) {
if (ir->sampler->type->sampler_dimensionality != GLSL_SAMPLER_DIM_RECT)
return visit_continue;
}
else if (ir->op != ir_txf) {
return visit_continue;
}
void *mem_ctx = ralloc_parent(ir);
if (ir->op == ir_txf) {
ir_variable *var = new(mem_ctx) ir_variable(ir->coordinate->type,
"coordinate",
ir_var_temporary);
base_ir->insert_before(var);
base_ir->insert_before(assign(var, ir->coordinate));
base_ir->insert_before(assign(var,
add(swizzle_for_size(var, ir->offset->type->vector_elements), ir->offset),
(1 << ir->offset->type->vector_elements) - 1));
ir->coordinate = new(mem_ctx) ir_dereference_variable(var);
} else {
ir->coordinate = add(ir->coordinate, i2f(ir->offset));
}
ir->offset = NULL;
progress = true;