diff options
| author | Christian König <[email protected]> | 2010-12-16 16:42:14 +0100 |
|---|---|---|
| committer | Christian König <[email protected]> | 2011-01-12 19:44:49 +0100 |
| commit | c60cb25bfb15fc83e78d9f2c74646dcc5ad07792 (patch) | |
| tree | 137a78573ff7a73928c4709064ade84d52534765 /src/gallium/drivers/r600/r600_shader.c | |
| parent | 7728bef29097c8406d35c6dd969544382abdf935 (diff) | |
r600g: implement output modifiers and use them to further optimize LRP
Diffstat (limited to 'src/gallium/drivers/r600/r600_shader.c')
| -rw-r--r-- | src/gallium/drivers/r600/r600_shader.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/src/gallium/drivers/r600/r600_shader.c b/src/gallium/drivers/r600/r600_shader.c index b853fd9dc88..78739bf89d8 100644 --- a/src/gallium/drivers/r600/r600_shader.c +++ b/src/gallium/drivers/r600/r600_shader.c @@ -2004,6 +2004,35 @@ static int tgsi_lrp(struct r600_shader_ctx *ctx) r = tgsi_split_literal_constant(ctx, r600_src); if (r) return r; + + /* optimize if it's just an equal balance */ + if(r600_src[0].sel == V_SQ_ALU_SRC_0_5) { + for (i = 0; i < lasti + 1; i++) { + if (!(inst->Dst[0].Register.WriteMask & (1 << i))) + continue; + + memset(&alu, 0, sizeof(struct r600_bc_alu)); + alu.inst = CTX_INST(V_SQ_ALU_WORD1_OP2_SQ_OP2_INST_ADD); + alu.src[0] = r600_src[1]; + alu.src[0].chan = tgsi_chan(&inst->Src[1], i); + alu.src[1] = r600_src[2]; + alu.src[1].chan = tgsi_chan(&inst->Src[2], i); + alu.omod = 3; + r = tgsi_dst(ctx, &inst->Dst[0], i, &alu.dst); + if (r) + return r; + + alu.dst.chan = i; + if (i == lasti) { + alu.last = 1; + } + r = r600_bc_add_alu(ctx->bc, &alu); + if (r) + return r; + } + return 0; + } + /* 1 - src0 */ for (i = 0; i < lasti + 1; i++) { if (!(inst->Dst[0].Register.WriteMask & (1 << i))) |