r500: add cmp support in theory

diff --git a/src/mesa/drivers/dri/r300/r500_fragprog.c b/src/mesa/drivers/dri/r300/r500_fragprog.c
index 2ea77bcfade39ecd8a6b9f35f3a85039bb8b4c5e..eee9eb8d718d8262b0a82ddc749ed73d438c58a9 100644 (file)
--- a/src/mesa/drivers/dri/r300/r500_fragprog.c
+++ b/src/mesa/drivers/dri/r300/r500_fragprog.c
@@ -418,6 +418,30 @@ static GLboolean parse_program(struct r500_fragment_program *fp)
                                        | R500_ALU_RGBA_ALPHA_SEL_C_SRC1
                                        | MAKE_SWIZ_ALPHA_C(make_alpha_swizzle(fpi->SrcReg[1]));
                                break;
+                       case OPCODE_CMP:
+                               src[0] = make_src(fp, fpi->SrcReg[0]);
+                               src[1] = make_src(fp, fpi->SrcReg[1]);
+                               src[2] = make_src(fp, fpi->SrcReg[2]);
+                               fp->inst[counter].inst0 = R500_INST_TYPE_ALU
+                                       | mask;
+                               fp->inst[counter].inst1 = R500_RGB_ADDR0(src[0])
+                                       | R500_RGB_ADDR1(src[1]) | R500_RGB_ADDR2(src[2]);
+                               fp->inst[counter].inst2 = R500_ALPHA_ADDR0(src[0])
+                                       | R500_ALPHA_ADDR1(src[1]) | R500_ALPHA_ADDR2(src[2]);
+                               fp->inst[counter].inst3 = R500_ALU_RGB_SEL_A_SRC0
+                                       | MAKE_SWIZ_RGB_A(make_rgb_swizzle(fpi->SrcReg[0]))
+                                       | R500_ALU_RGB_SEL_B_SRC1 | MAKE_SWIZ_RGB_B(make_rgb_swizzle(fpi->SrcReg[1]));
+                               fp->inst[counter].inst4 = R500_ALPHA_OP_CMP
+                                       | R500_ALPHA_ADDRD(dest)
+                                       | R500_ALPHA_SEL_A_SRC0 | MAKE_SWIZ_ALPHA_A(make_alpha_swizzle(fpi->SrcReg[0]))
+                                       | R500_ALPHA_SEL_B_SRC1 | MAKE_SWIZ_ALPHA_B(make_alpha_swizzle(fpi->SrcReg[1]));
+                               fp->inst[counter].inst5 = R500_ALU_RGBA_OP_CMP
+                                       | R500_ALU_RGBA_ADDRD(dest)
+                                       | R500_ALU_RGBA_SEL_C_SRC2
+                                       | MAKE_SWIZ_RGBA_C(make_rgb_swizzle(fpi->SrcReg[2]))
+                                       | R500_ALU_RGBA_ALPHA_SEL_C_SRC2
+                                       | MAKE_SWIZ_ALPHA_C(make_alpha_swizzle(fpi->SrcReg[2]));
+                               break;
                        case OPCODE_DP3:
                                src[0] = make_src(fp, fpi->SrcReg[0]);
                                src[1] = make_src(fp, fpi->SrcReg[1]);