diff options
| -rw-r--r-- | src/gallium/drivers/r600/r600_shader.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/src/gallium/drivers/r600/r600_shader.c b/src/gallium/drivers/r600/r600_shader.c index 51ff7db3612..a2fec205051 100644 --- a/src/gallium/drivers/r600/r600_shader.c +++ b/src/gallium/drivers/r600/r600_shader.c @@ -952,7 +952,7 @@ static int tgsi_setup_trig(struct r600_shader_ctx *ctx, struct r600_bc_alu_src r600_src[3]) { struct tgsi_full_instruction *inst = &ctx->parse.FullToken.FullInstruction; - int r; + int r, src0_chan; uint32_t lit_vals[4]; struct r600_bc_alu alu; @@ -964,6 +964,19 @@ static int tgsi_setup_trig(struct r600_shader_ctx *ctx, if (r) return r; + src0_chan = tgsi_chan(&inst->Src[0], 0); + + /* We are going to feed two literals to the MAD below, + * which means that if the first operand is a literal as well, + * we need to copy its value manually. + */ + if (r600_src[0].sel == V_SQ_ALU_SRC_LITERAL) { + unsigned index = inst->Src[0].Register.Index; + + lit_vals[2] = ctx->literals[index * 4 + src0_chan]; + src0_chan = 2; + } + lit_vals[0] = fui(1.0 /(3.1415926535 * 2)); lit_vals[1] = fui(0.5f); @@ -976,7 +989,7 @@ static int tgsi_setup_trig(struct r600_shader_ctx *ctx, alu.dst.write = 1; alu.src[0] = r600_src[0]; - alu.src[0].chan = tgsi_chan(&inst->Src[0], 0); + alu.src[0].chan = src0_chan; alu.src[1].sel = V_SQ_ALU_SRC_LITERAL; alu.src[1].chan = 0; |