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radeonsi: reduce the number of FMASK input coordinates

Browse source 
Before:
  image_load v3, v[0:3] ...
After:
  image_load v3, v[0:1] ...

Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
This commit is contained in:
Marek Olšák 2017-02-08 00:26:37 +01:00
parent 28c06b3ceb
commit 8a2ae4153b
1 changed files with 3 additions and 7 deletions
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10
src/gallium/drivers/radeonsi/si_shader.c
View file

@ -4395,16 +4395,12 @@ static void tex_fetch_args(
struct lp_build_context *uint_bld = &bld_base->uint_bld;
struct lp_build_emit_data txf_emit_data = *emit_data;
LLVMValueRef txf_address[4];
unsigned txf_count = count;
/* We only need .xy for non-arrays, and .xyz for arrays. */
unsigned txf_count = target == TGSI_TEXTURE_2D_MSAA ? 2 : 3;
struct tgsi_full_instruction inst = {};
memcpy(txf_address, address, sizeof(txf_address));
if (target == TGSI_TEXTURE_2D_MSAA) {
txf_address[2] = bld_base->uint_bld.zero;
}
txf_address[3] = bld_base->uint_bld.zero;
/* Read FMASK using TXF. */
inst.Instruction.Opcode = TGSI_OPCODE_TXF;
inst.Texture.Texture = target;
@ -4425,7 +4421,7 @@ static void tex_fetch_args(
txf_emit_data.output[0],
uint_bld->zero, "");
unsigned sample_chan = target == TGSI_TEXTURE_2D_MSAA ? 2 : 3;
unsigned sample_chan = txf_count; /* the sample index is last */
LLVMValueRef sample_index4 =
LLVMBuildMul(gallivm->builder, address[sample_chan], four, "");