From: Corbin Simpson <MostAwesomeDude@gmail.com>
Date: Mon, 26 May 2008 22:18:41 +0000 (-0700)
Subject: r5xx: Moar LIT.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=5499685931cac382bffb053ab527d882a7d0e109;p=mesa.git

r5xx: Moar LIT.
Still not working, but getting closer.
---

diff --git a/src/mesa/drivers/dri/r300/r500_fragprog.c b/src/mesa/drivers/dri/r300/r500_fragprog.c
index 81976573c6b..f55c8560c75 100644
--- a/src/mesa/drivers/dri/r300/r500_fragprog.c
+++ b/src/mesa/drivers/dri/r300/r500_fragprog.c
@@ -102,6 +102,10 @@
 /* Writemasks */
 #define R500_WRITEMASK_G 0x2
 #define R500_WRITEMASK_A 0x8
+#define R500_WRITEMASK_AR 0x9
+#define R500_WRITEMASK_AG 0xA
+#define R500_WRITEMASK_ARG 0xB
+#define R500_WRITEMASK_AB 0xC
 #define R500_WRITEMASK_ARGB 0xF
 
 /* 1/(2pi), needed for quick modulus in trig insts
@@ -678,20 +682,19 @@ static GLboolean parse_program(struct r500_fragment_program *fp)
 					| R500_ALU_RGBA_ADDRD(dest);
 				break;
 			case OPCODE_LIT:
-				/* I think I've got a pretty good path through this.
-				 * MAX temp1, tmp, [0, 0, 0, -128];
-				 * MIN temp1.w, temp1.w, [128];
-				 * POW temp1.z, temp1.y, temp1.w; (3 insts)
-				 * MOV result.xyzw, [1, temp1.y, temp1.z, 1]; */
+				/* To be honest, I have no idea how I came up with the following.
+				 * All I know is that it's based on the r3xx stuff, and was
+				 * concieved with the help of NyQuil. Mmm, MyQuil. */
+
+				/* First instruction */
 				src[0] = make_src(fp, fpi->SrcReg[0]);
 				src[1] = emit_const4fv(fp, LIT);
 				fp->inst[counter].inst0 = R500_INST_TYPE_ALU | R500_INST_TEX_SEM_WAIT
-					| (R500_WRITEMASK_ARGB << 11);
+					| (R500_WRITEMASK_ARG << 11);
 				fp->inst[counter].inst1 = R500_RGB_ADDR0(src[0]) | R500_RGB_ADDR1(src[1]);
 				fp->inst[counter].inst2 = R500_ALPHA_ADDR0(src[0]) | R500_ALPHA_ADDR1(src[1]);
 				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(R500_SWIZ_RGB_ZERO);
 				fp->inst[counter].inst4 = R500_ALPHA_OP_MAX
 					| R500_ALPHA_ADDRD(get_temp(fp, 0))
@@ -700,81 +703,80 @@ static GLboolean parse_program(struct r500_fragment_program *fp)
 				fp->inst[counter].inst5 = R500_ALU_RGBA_OP_MAX
 					| R500_ALU_RGBA_ADDRD(get_temp(fp, 0));
 				counter++;
-				fp->inst[counter].inst0 = R500_INST_TYPE_ALU | (R500_WRITEMASK_A << 11);
+				/* Second instruction */
+				fp->inst[counter].inst0 = R500_INST_TYPE_ALU | (R500_WRITEMASK_AB << 11);
 				fp->inst[counter].inst1 = R500_RGB_ADDR0(get_temp(fp, 0));
 				fp->inst[counter].inst2 = R500_ALPHA_ADDR0(get_temp(fp, 0)) | R500_ALPHA_ADDR1(src[1]);
+				/* Select [z, z, z, y] */
+				temp_swiz = 2 | (2 << 3) | (2 << 6);
 				fp->inst[counter].inst3 = R500_ALU_RGB_SEL_A_SRC0
-					| MAKE_SWIZ_RGB_A(R500_SWIZ_RGB_RGB)
+					| MAKE_SWIZ_RGB_A(temp_swiz)
 					| R500_ALU_RGB_SEL_B_SRC0
 					| MAKE_SWIZ_RGB_B(R500_SWIZ_RGB_RGB);
-				fp->inst[counter].inst4 = R500_ALPHA_OP_MAX
+				fp->inst[counter].inst4 = R500_ALPHA_OP_LN2
 					| R500_ALPHA_ADDRD(get_temp(fp, 0))
-					| R500_ALPHA_SEL_A_SRC0 | R500_ALPHA_SWIZ_A_A
-					| R500_ALPHA_SEL_B_SRC1 | R500_ALPHA_SWIZ_B_A | R500_ALPHA_MOD_B_NEG;
-				fp->inst[counter].inst5 = R500_ALU_RGBA_OP_MAX
+					| R500_ALPHA_SEL_A_SRC0 | R500_ALPHA_SWIZ_A_G;
+				fp->inst[counter].inst5 = R500_ALU_RGBA_OP_MIN
 					| R500_ALU_RGBA_ADDRD(get_temp(fp, 0));
 				counter++;
-				fp->inst[counter].inst0 = R500_INST_TYPE_ALU | (R500_WRITEMASK_ARGB << 11);
+				/* Third instruction */
+				fp->inst[counter].inst0 = R500_INST_TYPE_ALU | (R500_WRITEMASK_AG << 11);
 				fp->inst[counter].inst1 = R500_RGB_ADDR0(get_temp(fp, 0));
 				fp->inst[counter].inst2 = R500_ALPHA_ADDR0(get_temp(fp, 0));
-				fp->inst[counter].inst3 = R500_ALU_RGB_SEL_A_SRC0
-					| MAKE_SWIZ_RGB_A(R500_SWIZ_RGB_RGB);
-				fp->inst[counter].inst4 = R500_ALPHA_OP_LN2
-					| R500_ALPHA_ADDRD(get_temp(fp, 1))
-					| R500_ALPHA_SEL_A_SRC0 | R500_ALPHA_SWIZ_A_G;
-				fp->inst[counter].inst5 = R500_ALU_RGBA_OP_SOP
-					| R500_ALU_RGBA_ADDRD(get_temp(fp, 1));
-				counter++;
-				fp->inst[counter].inst0 = R500_INST_TYPE_ALU | (R500_WRITEMASK_ARGB << 11);
-				fp->inst[counter].inst1 = R500_RGB_ADDR0(get_temp(fp, 0))
-					| R500_RGB_ADDR1(get_temp(fp, 1));
-				fp->inst[counter].inst2 = R500_ALPHA_ADDR0(get_temp(fp, 0))
-					| R500_ALPHA_ADDR1(get_temp(fp, 1));
-				/* Select [w, w, w, w] */
-				temp_swiz = 3 | (3 << 3) | (3 << 6);
+				/* Select [x, x, x, z] */
+				temp_swiz = 0;
 				fp->inst[counter].inst3 = R500_ALU_RGB_SEL_A_SRC0
 					| MAKE_SWIZ_RGB_A(temp_swiz)
-					| R500_ALU_RGB_SEL_B_SRC1
-					| MAKE_SWIZ_RGB_B(R500_SWIZ_RGB_RGB);
+					| R500_ALU_RGB_SEL_B_SRC0
+					| MAKE_SWIZ_RGB_B(R500_SWIZ_RGB_ONE);
 				fp->inst[counter].inst4 = R500_ALPHA_OP_MAD
 					| R500_ALPHA_ADDRD(get_temp(fp, 1))
-					| R500_ALPHA_SEL_A_SRC0 | R500_ALPHA_SWIZ_A_A
-					| R500_ALPHA_SEL_B_SRC1 | R500_ALPHA_SWIZ_B_A;
+					| R500_ALPHA_SEL_A_SRC0 | R500_ALPHA_SWIZ_A_B
+					| R500_ALPHA_SEL_B_SRC0 | R500_ALPHA_SWIZ_B_A;
 				fp->inst[counter].inst5 = R500_ALU_RGBA_OP_MAD
 					| R500_ALU_RGBA_ADDRD(get_temp(fp, 1))
 					| MAKE_SWIZ_RGBA_C(R500_SWIZ_RGB_ZERO)
-					| MAKE_SWIZ_ALPHA_C(R500_SWIZZLE_ZERO);
+					| R500_ALU_RGBA_A_SWIZ_0;
 				counter++;
-				fp->inst[counter].inst0 = R500_INST_TYPE_ALU | (R500_WRITEMASK_G << 11);
-				fp->inst[counter].inst1 = R500_RGB_ADDR0(get_temp(fp, 1));
-				fp->inst[counter].inst2 = R500_ALPHA_ADDR0(get_temp(fp, 1));
-				fp->inst[counter].inst3 = R500_ALU_RGB_SEL_A_SRC0
-					| MAKE_SWIZ_RGB_A(R500_SWIZ_RGB_RGB);
+				/* Fourth instruction */
+				fp->inst[counter].inst0 = R500_INST_TYPE_ALU | (R500_WRITEMASK_AR << 11);
+				fp->inst[counter].inst2 = R500_ALPHA_ADDR0(get_temp(fp, 0));
+				fp->inst[counter].inst3 = MAKE_SWIZ_RGB_A(R500_SWIZ_RGB_ONE)
+					| MAKE_SWIZ_RGB_B(R500_SWIZ_RGB_ONE);
 				fp->inst[counter].inst4 = R500_ALPHA_OP_EX2
 					| R500_ALPHA_ADDRD(get_temp(fp, 0))
 					| R500_ALPHA_SEL_A_SRC0 | R500_ALPHA_SWIZ_A_A;
-				fp->inst[counter].inst5 = R500_ALU_RGBA_OP_SOP
-					| R500_ALU_RGBA_ADDRD(get_temp(fp, 0));
+				fp->inst[counter].inst5 = R500_ALU_RGBA_OP_MAD
+					| R500_ALU_RGBA_ADDRD(get_temp(fp, 0))
+					| MAKE_SWIZ_RGBA_C(R500_SWIZ_RGB_ZERO)
+					| MAKE_SWIZ_ALPHA_C(R500_SWIZZLE_ZERO);
 				counter++;
-				emit_alu(fp, counter, fpi);
+				/* Fifth instruction */
+				fp->inst[counter].inst0 = R500_INST_TYPE_ALU | (R500_WRITEMASK_AB << 11);
 				fp->inst[counter].inst1 = R500_RGB_ADDR0(get_temp(fp, 0));
-				fp->inst[counter].inst2 = R500_ALPHA_ADDR0(get_temp(fp, 0));
-				/* Select [1, y, z, 1] */
-				temp_swiz = R500_SWIZZLE_ONE | (2 << 3) | (3 << 6);
+				/* Select [w, w, w] */
+				temp_swiz = 3 | (3 << 3) | (3 << 6);
 				fp->inst[counter].inst3 = R500_ALU_RGB_SEL_A_SRC0
-					| MAKE_SWIZ_RGB_A(temp_swiz)
+					| MAKE_SWIZ_RGB_A(R500_SWIZ_RGB_ZERO)
 					| R500_ALU_RGB_SEL_B_SRC0
-					| MAKE_SWIZ_RGB_B(temp_swiz)
-					| R500_ALU_RGB_OMOD_DISABLE;
-				fp->inst[counter].inst4 |= R500_ALPHA_OP_CMP
-					| R500_ALPHA_ADDRD(dest)
-					| R500_ALPHA_SEL_A_SRC0 | R500_ALPHA_SWIZ_A_1
-					| R500_ALPHA_SEL_B_SRC0 | R500_ALPHA_SWIZ_B_1
-					| R500_ALPHA_OMOD_DISABLE;
+					| MAKE_SWIZ_RGB_B(temp_swiz);
+				fp->inst[counter].inst4 |= R500_ALPHA_OP_MAD
+					| R500_ALPHA_ADDRD(get_temp(fp, 0))
+					| R500_ALPHA_SWIZ_A_1
+					| R500_ALPHA_SWIZ_B_1;
+				/* Select [-y, -y, -y] */
+				temp_swiz = 1 | (1 << 3) | (1 << 6);
 				fp->inst[counter].inst5 = R500_ALU_RGBA_OP_CMP
-					| R500_ALU_RGBA_ADDRD(dest)
-					| MAKE_SWIZ_RGBA_C(R500_SWIZ_RGB_ZERO)
+					| R500_ALU_RGBA_ADDRD(get_temp(fp, 0))
+					| MAKE_SWIZ_RGBA_C(temp_swiz)
+					| R500_ALU_RGBA_MOD_C_NEG
 					| MAKE_SWIZ_ALPHA_C(R500_SWIZZLE_ZERO);
+				counter++;
+				/* Final instruction */
+				emit_alu(fp, counter, fpi);
+				fpi->SrcReg[0].Index = get_temp(fp, 0);
+				fpi->SrcReg[0].Swizzle = 1672;
+				emit_mov(fp, counter, fpi->SrcReg[0], dest);
 				break;
 			case OPCODE_LRP:
 				/* src0 * src1 + INV(src0) * src2