diff options
Diffstat (limited to 'src/gallium/auxiliary')
| -rw-r--r-- | src/gallium/auxiliary/tgsi/tgsi_lowering.c | 35 |
1 files changed, 13 insertions, 22 deletions
diff --git a/src/gallium/auxiliary/tgsi/tgsi_lowering.c b/src/gallium/auxiliary/tgsi/tgsi_lowering.c index 79599314591..2a991589352 100644 --- a/src/gallium/auxiliary/tgsi/tgsi_lowering.c +++ b/src/gallium/auxiliary/tgsi/tgsi_lowering.c @@ -264,14 +264,13 @@ transform_dst(struct tgsi_transform_context *tctx, * dst.z = src0.x \times src1.y - src1.x \times src0.y * dst.w = 1.0 * - * ; needs: 2 tmp, imm{1.0} - * MUL tmpA.xyz, src0.yzx, src1.zxy - * MUL tmpB.xyz, src1.yzx, src0.zxy - * SUB dst.xyz, tmpA.xyz, tmpB.xyz + * ; needs: 1 tmp, imm{1.0} + * MUL tmpA.xyz, src1.yzx, src0.zxy + * MAD dst.xyz, src0.yzx, src1.zxy, -tmpA.xyz * MOV dst.w, imm{1.0} */ -#define XPD_GROW (NINST(2) + NINST(2) + NINST(2) + NINST(1) - OINST(2)) -#define XPD_TMP 2 +#define XPD_GROW (NINST(2) + NINST(3) + NINST(1) - OINST(2)) +#define XPD_TMP 1 static void transform_xpd(struct tgsi_transform_context *tctx, struct tgsi_full_instruction *inst) @@ -283,34 +282,26 @@ transform_xpd(struct tgsi_transform_context *tctx, struct tgsi_full_instruction new_inst; if (dst->Register.WriteMask & TGSI_WRITEMASK_XYZ) { - /* MUL tmpA.xyz, src0.yzx, src1.zxy */ + /* MUL tmpA.xyz, src1.yzx, src0.zxy */ new_inst = tgsi_default_full_instruction(); new_inst.Instruction.Opcode = TGSI_OPCODE_MUL; new_inst.Instruction.NumDstRegs = 1; reg_dst(&new_inst.Dst[0], &ctx->tmp[A].dst, TGSI_WRITEMASK_XYZ); new_inst.Instruction.NumSrcRegs = 2; - reg_src(&new_inst.Src[0], src0, SWIZ(Y, Z, X, _)); - reg_src(&new_inst.Src[1], src1, SWIZ(Z, X, Y, _)); - tctx->emit_instruction(tctx, &new_inst); - - /* MUL tmpB.xyz, src1.yzx, src0.zxy */ - new_inst = tgsi_default_full_instruction(); - new_inst.Instruction.Opcode = TGSI_OPCODE_MUL; - new_inst.Instruction.NumDstRegs = 1; - reg_dst(&new_inst.Dst[0], &ctx->tmp[B].dst, TGSI_WRITEMASK_XYZ); - new_inst.Instruction.NumSrcRegs = 2; reg_src(&new_inst.Src[0], src1, SWIZ(Y, Z, X, _)); reg_src(&new_inst.Src[1], src0, SWIZ(Z, X, Y, _)); tctx->emit_instruction(tctx, &new_inst); - /* SUB dst.xyz, tmpA.xyz, tmpB.xyz */ + /* MAD dst.xyz, src0.yzx, src1.zxy, -tmpA.xyz */ new_inst = tgsi_default_full_instruction(); - new_inst.Instruction.Opcode = TGSI_OPCODE_SUB; + new_inst.Instruction.Opcode = TGSI_OPCODE_MAD; new_inst.Instruction.NumDstRegs = 1; reg_dst(&new_inst.Dst[0], dst, TGSI_WRITEMASK_XYZ); - new_inst.Instruction.NumSrcRegs = 2; - reg_src(&new_inst.Src[0], &ctx->tmp[A].src, SWIZ(X, Y, Z, _)); - reg_src(&new_inst.Src[1], &ctx->tmp[B].src, SWIZ(X, Y, Z, _)); + new_inst.Instruction.NumSrcRegs = 3; + reg_src(&new_inst.Src[0], src0, SWIZ(Y, Z, X, _)); + reg_src(&new_inst.Src[1], src1, SWIZ(Z, X, Y, _)); + reg_src(&new_inst.Src[2], &ctx->tmp[A].src, SWIZ(X, Y, Z, _)); + new_inst.Src[2].Register.Negate = true; tctx->emit_instruction(tctx, &new_inst); } |