KonstantinSeurer
/
mesa
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

i965/vs: Implement EXT_texture_swizzle support for VS texturing. 

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
This commit is contained in:
Kenneth Graunke 2011-12-07 03:20:53 -08:00
parent d45814c925
commit 8e34021099
2 changed files with 52 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
src/mesa/drivers/dri/i965/brw_vec4.h
View File

@ -497,6 +497,8 @@ public:
void emit_math2_gen4(enum opcode opcode, dst_reg dst, src_reg src0, src_reg src1);
void emit_math(enum opcode opcode, dst_reg dst, src_reg src0, src_reg src1);
void swizzle_result(ir_texture *ir, src_reg orig_val, int sampler);
void emit_ndc_computation();
void emit_psiz_and_flags(struct brw_reg reg);
void emit_clip_distances(struct brw_reg reg, int offset);

51
src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp
View File

@ -1878,7 +1878,56 @@ vec4_visitor::visit(ir_texture *ir)
emit(inst);
this->result = src_reg(inst->dst);
swizzle_result(ir, src_reg(inst->dst), sampler);
}
void
vec4_visitor::swizzle_result(ir_texture *ir, src_reg orig_val, int sampler)
{
this->result = orig_val;
int s = c->key.tex.swizzles[sampler];
if (ir->op == ir_txs || ir->type == glsl_type::float_type
|| s == SWIZZLE_NOOP)
return;
int zero_mask = 0, one_mask = 0, copy_mask = 0;
int swizzle[4];
for (int i = 0; i < 4; i++) {
switch (GET_SWZ(s, i)) {
case SWIZZLE_ZERO:
zero_mask |= (1 << i);
break;
case SWIZZLE_ONE:
one_mask |= (1 << i);
break;
default:
copy_mask |= (1 << i);
swizzle[i] = GET_SWZ(s, i);
break;
}
}
this->result = src_reg(this, ir->type);
dst_reg swizzled_result(this->result);
if (copy_mask) {
orig_val.swizzle = BRW_SWIZZLE4(swizzle[0], swizzle[1], swizzle[2], swizzle[3]);
swizzled_result.writemask = copy_mask;
emit(MOV(swizzled_result, orig_val));
}
if (zero_mask) {
swizzled_result.writemask = zero_mask;
emit(MOV(swizzled_result, src_reg(0.0f)));
}
if (one_mask) {
swizzled_result.writemask = one_mask;
emit(MOV(swizzled_result, src_reg(1.0f)));
}
}
void