From: Maciej Cencora <m.cencora@gmail.com>
Date: Sat, 4 Jul 2009 14:50:25 +0000 (+0200)
Subject: r300: move depth output rewrite out of NQSSADCE
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=e43cc28c1b6face903f3c977d6eb887335bec886;p=mesa.git

r300: move depth output rewrite out of NQSSADCE
---

diff --git a/src/mesa/drivers/dri/r300/r300_fragprog_common.c b/src/mesa/drivers/dri/r300/r300_fragprog_common.c
index e90be9b7f85..d5ef18b2ad8 100644
--- a/src/mesa/drivers/dri/r300/r300_fragprog_common.c
+++ b/src/mesa/drivers/dri/r300/r300_fragprog_common.c
@@ -239,6 +239,46 @@ static void build_state(
 	}
 }
 
+static void rewrite_depth_out(struct gl_program *prog)
+{
+	struct prog_instruction *inst;
+
+	for (inst = prog->Instructions; inst->Opcode != OPCODE_END; ++inst) {
+		if (inst->DstReg.File != PROGRAM_OUTPUT || inst->DstReg.Index != FRAG_RESULT_DEPTH)
+			continue;
+
+		if (inst->DstReg.WriteMask & WRITEMASK_Z) {
+			inst->DstReg.WriteMask = WRITEMASK_W;
+		} else {
+			inst->DstReg.WriteMask = 0;
+			continue;
+		}
+
+		switch (inst->Opcode) {
+			case OPCODE_FRC:
+			case OPCODE_MOV:
+				inst->SrcReg[0] = lmul_swizzle(SWIZZLE_ZZZZ, inst->SrcReg[0]);
+				break;
+			case OPCODE_ADD:
+			case OPCODE_MAX:
+			case OPCODE_MIN:
+			case OPCODE_MUL:
+				inst->SrcReg[0] = lmul_swizzle(SWIZZLE_ZZZZ, inst->SrcReg[0]);
+				inst->SrcReg[1] = lmul_swizzle(SWIZZLE_ZZZZ, inst->SrcReg[1]);
+				break;
+			case OPCODE_CMP:
+			case OPCODE_MAD:
+				inst->SrcReg[0] = lmul_swizzle(SWIZZLE_ZZZZ, inst->SrcReg[0]);
+				inst->SrcReg[1] = lmul_swizzle(SWIZZLE_ZZZZ, inst->SrcReg[1]);
+				inst->SrcReg[2] = lmul_swizzle(SWIZZLE_ZZZZ, inst->SrcReg[2]);
+				break;
+			default:
+				// Scalar instructions needn't be reswizzled
+				break;
+		}
+	}
+}
+
 void r300TranslateFragmentShader(GLcontext *ctx, struct r300_fragment_program *fp)
 {
 	r300ContextPtr r300 = R300_CONTEXT(ctx);
@@ -260,6 +300,8 @@ void r300TranslateFragmentShader(GLcontext *ctx, struct r300_fragment_program *f
 
 	rewriteFog(&compiler);
 
+	rewrite_depth_out(compiler.program);
+
 	if (r300->radeon.radeonScreen->chip_family >= CHIP_FAMILY_RV515) {
 		struct radeon_program_transformation transformations[] = {
 			{ &r500_transform_TEX, &compiler },
@@ -287,16 +329,14 @@ void r300TranslateFragmentShader(GLcontext *ctx, struct r300_fragment_program *f
 		struct radeon_nqssadce_descr nqssadce = {
 			.Init = &nqssadce_init,
 			.IsNativeSwizzle = &r500FPIsNativeSwizzle,
-			.BuildSwizzle = &r500FPBuildSwizzle,
-			.RewriteDepthOut = GL_TRUE
+			.BuildSwizzle = &r500FPBuildSwizzle
 		};
 		radeonNqssaDce(ctx, compiler.program, &nqssadce);
 	} else {
 		struct radeon_nqssadce_descr nqssadce = {
 			.Init = &nqssadce_init,
 			.IsNativeSwizzle = &r300FPIsNativeSwizzle,
-			.BuildSwizzle = &r300FPBuildSwizzle,
-			.RewriteDepthOut = GL_TRUE
+			.BuildSwizzle = &r300FPBuildSwizzle
 		};
 		radeonNqssaDce(ctx, compiler.program, &nqssadce);
 	}
diff --git a/src/mesa/drivers/dri/r300/radeon_nqssadce.c b/src/mesa/drivers/dri/r300/radeon_nqssadce.c
index d2591fa1bd2..82dfc31dd0f 100644
--- a/src/mesa/drivers/dri/r300/radeon_nqssadce.c
+++ b/src/mesa/drivers/dri/r300/radeon_nqssadce.c
@@ -56,7 +56,7 @@ static struct register_state *get_reg_state(struct nqssadce_state* s, GLuint fil
  *
  * @note Works correctly only for X, Y, Z, W swizzles, not for constant swizzles.
  */
-static struct prog_src_register lmul_swizzle(GLuint swizzle, struct prog_src_register srcreg)
+struct prog_src_register lmul_swizzle(GLuint swizzle, struct prog_src_register srcreg)
 {
 	struct prog_src_register tmp = srcreg;
 	int i;
@@ -121,40 +121,6 @@ static struct prog_instruction* track_used_srcreg(struct nqssadce_state* s,
 	return inst;
 }
 
-
-static void rewrite_depth_out(struct prog_instruction *inst)
-{
-	if (inst->DstReg.WriteMask & WRITEMASK_Z) {
-		inst->DstReg.WriteMask = WRITEMASK_W;
-	} else {
-		inst->DstReg.WriteMask = 0;
-		return;
-	}
-
-	switch (inst->Opcode) {
-	case OPCODE_FRC:
-	case OPCODE_MOV:
-		inst->SrcReg[0] = lmul_swizzle(SWIZZLE_ZZZZ, inst->SrcReg[0]);
-		break;
-	case OPCODE_ADD:
-	case OPCODE_MAX:
-	case OPCODE_MIN:
-	case OPCODE_MUL:
-		inst->SrcReg[0] = lmul_swizzle(SWIZZLE_ZZZZ, inst->SrcReg[0]);
-		inst->SrcReg[1] = lmul_swizzle(SWIZZLE_ZZZZ, inst->SrcReg[1]);
-		break;
-	case OPCODE_CMP:
-	case OPCODE_MAD:
-		inst->SrcReg[0] = lmul_swizzle(SWIZZLE_ZZZZ, inst->SrcReg[0]);
-		inst->SrcReg[1] = lmul_swizzle(SWIZZLE_ZZZZ, inst->SrcReg[1]);
-		inst->SrcReg[2] = lmul_swizzle(SWIZZLE_ZZZZ, inst->SrcReg[2]);
-		break;
-	default:
-		// Scalar instructions needn't be reswizzled
-		break;
-	}
-}
-
 static void unalias_srcregs(struct prog_instruction *inst, GLuint oldindex, GLuint newindex)
 {
 	int nsrc = _mesa_num_inst_src_regs(inst->Opcode);
@@ -189,11 +155,6 @@ static void process_instruction(struct nqssadce_state* s)
 		return;
 
 	if (inst->Opcode != OPCODE_KIL) {
-		if (s->Descr->RewriteDepthOut) {
-			if (inst->DstReg.File == PROGRAM_OUTPUT && inst->DstReg.Index == FRAG_RESULT_DEPTH)
-				rewrite_depth_out(inst);
-		}
-
 		struct register_state *regstate = get_reg_state(s, inst->DstReg.File, inst->DstReg.Index);
 		if (!regstate) {
 			_mesa_problem(s->Ctx, "NqssaDce: bad destination register (%i[%i])\n",
diff --git a/src/mesa/drivers/dri/r300/radeon_nqssadce.h b/src/mesa/drivers/dri/r300/radeon_nqssadce.h
index a4f94abcb62..e3341692e4f 100644
--- a/src/mesa/drivers/dri/r300/radeon_nqssadce.h
+++ b/src/mesa/drivers/dri/r300/radeon_nqssadce.h
@@ -83,14 +83,10 @@ struct radeon_nqssadce_descr {
 	 */
 	void (*BuildSwizzle)(struct nqssadce_state*, struct prog_dst_register dst, struct prog_src_register src);
 
-	/**
-	 * Rewrite instructions that write to DEPR.z to write to DEPR.w
-	 * instead (rewriting is done *before* the WriteMask test).
-	 */
-	GLboolean RewriteDepthOut;
 	void *Data;
 };
 
 void radeonNqssaDce(GLcontext *ctx, struct gl_program *p, struct radeon_nqssadce_descr* descr);
+struct prog_src_register lmul_swizzle(GLuint swizzle, struct prog_src_register srcreg);
 
 #endif /* __RADEON_PROGRAM_NQSSADCE_H_ */