From 71af5080722afcbbb8a935138d95214ef7afe219 Mon Sep 17 00:00:00 2001
From: Eric Anholt <eric@anholt.net>
Date: Tue, 11 Aug 2009 16:31:19 -0700
Subject: [PATCH] i965: Share basic ALU ops between brw_wm_glsl and
 brw_wm_emit.c

This drops support for get_src_reg_imm in these, but the prospect of getting
brw_wm_pass*.c onto our GLSL path is well worth some temporary pain.
---
 src/mesa/drivers/dri/i965/brw_wm.h      |  17 ++++
 src/mesa/drivers/dri/i965/brw_wm_emit.c |  32 +++----
 src/mesa/drivers/dri/i965/brw_wm_glsl.c | 106 ++----------------------
 3 files changed, 38 insertions(+), 117 deletions(-)

diff --git a/src/mesa/drivers/dri/i965/brw_wm.h b/src/mesa/drivers/dri/i965/brw_wm.h
index f841d258702..93f79dbfe5d 100644
--- a/src/mesa/drivers/dri/i965/brw_wm.h
+++ b/src/mesa/drivers/dri/i965/brw_wm.h
@@ -308,6 +308,23 @@ void brw_wm_lookup_iz( GLuint line_aa,
 GLboolean brw_wm_is_glsl(const struct gl_fragment_program *fp);
 void brw_wm_glsl_emit(struct brw_context *brw, struct brw_wm_compile *c);
 
+/* brw_wm_emit.c */
+void emit_alu1(struct brw_compile *p,
+	       struct brw_instruction *(*func)(struct brw_compile *,
+					       struct brw_reg,
+					       struct brw_reg),
+	       const struct brw_reg *dst,
+	       GLuint mask,
+	       const struct brw_reg *arg0);
+void emit_alu2(struct brw_compile *p,
+	       struct brw_instruction *(*func)(struct brw_compile *,
+					       struct brw_reg,
+					       struct brw_reg,
+					       struct brw_reg),
+	       const struct brw_reg *dst,
+	       GLuint mask,
+	       const struct brw_reg *arg0,
+	       const struct brw_reg *arg1);
 void emit_ddxy(struct brw_compile *p,
 	       const struct brw_reg *dst,
 	       GLuint mask,
diff --git a/src/mesa/drivers/dri/i965/brw_wm_emit.c b/src/mesa/drivers/dri/i965/brw_wm_emit.c
index bf80a2942a4..5e41a3f5711 100644
--- a/src/mesa/drivers/dri/i965/brw_wm_emit.c
+++ b/src/mesa/drivers/dri/i965/brw_wm_emit.c
@@ -352,13 +352,13 @@ void emit_ddxy(struct brw_compile *p,
       brw_set_saturate(p, 0);
 }
 
-static void emit_alu1( struct brw_compile *p, 
-		       struct brw_instruction *(*func)(struct brw_compile *, 
-						       struct brw_reg, 
-						       struct brw_reg),
-		       const struct brw_reg *dst,
-		       GLuint mask,
-		       const struct brw_reg *arg0 )
+void emit_alu1(struct brw_compile *p,
+	       struct brw_instruction *(*func)(struct brw_compile *,
+					       struct brw_reg,
+					       struct brw_reg),
+	       const struct brw_reg *dst,
+	       GLuint mask,
+	       const struct brw_reg *arg0)
 {
    GLuint i;
 
@@ -376,15 +376,15 @@ static void emit_alu1( struct brw_compile *p,
 }
 
 
-static void emit_alu2( struct brw_compile *p, 
-		       struct brw_instruction *(*func)(struct brw_compile *, 
-						       struct brw_reg, 
-						       struct brw_reg, 
-						       struct brw_reg),
-		       const struct brw_reg *dst,
-		       GLuint mask,
-		       const struct brw_reg *arg0,
-		       const struct brw_reg *arg1 )
+void emit_alu2(struct brw_compile *p,
+	       struct brw_instruction *(*func)(struct brw_compile *,
+					       struct brw_reg,
+					       struct brw_reg,
+					       struct brw_reg),
+	       const struct brw_reg *dst,
+	       GLuint mask,
+	       const struct brw_reg *arg0,
+	       const struct brw_reg *arg1)
 {
    GLuint i;
 
diff --git a/src/mesa/drivers/dri/i965/brw_wm_glsl.c b/src/mesa/drivers/dri/i965/brw_wm_glsl.c
index fd6d6c5602d..fdd31d4ed50 100644
--- a/src/mesa/drivers/dri/i965/brw_wm_glsl.c
+++ b/src/mesa/drivers/dri/i965/brw_wm_glsl.c
@@ -668,26 +668,6 @@ static void emit_trunc( struct brw_wm_compile *c,
     brw_set_saturate(p, 0);
 }
 
-static void emit_mov( struct brw_wm_compile *c,
-                      const struct prog_instruction *inst)
-{
-    int i;
-    struct brw_compile *p = &c->func;
-    GLuint mask = inst->DstReg.WriteMask;
-    brw_set_saturate(p, inst->SaturateMode != SATURATE_OFF);
-    for (i = 0; i < 4; i++) {
-	if (mask & (1<<i)) {
-	    struct brw_reg src, dst;
-	    dst = get_dst_reg(c, inst, i);
-            /* XXX some moves from immediate value don't work reliably!!! */
-            /*src = get_src_reg_imm(c, inst, 0, i);*/
-            src = get_src_reg(c, inst, 0, i);
-	    brw_MOV(p, dst, src);
-	}
-    }
-    brw_set_saturate(p, 0);
-}
-
 static void emit_pixel_xy(struct brw_wm_compile *c,
                           const struct prog_instruction *inst)
 {
@@ -1169,25 +1149,6 @@ static void emit_lg2(struct brw_wm_compile *c,
     emit_math1(c, inst, BRW_MATH_FUNCTION_LOG);
 }
 
-static void emit_add(struct brw_wm_compile *c,
-                     const struct prog_instruction *inst)
-{
-    struct brw_compile *p = &c->func;
-    struct brw_reg src0, src1, dst;
-    GLuint mask = inst->DstReg.WriteMask;
-    int i;
-    brw_set_saturate(p, (inst->SaturateMode != SATURATE_OFF) ? 1 : 0);
-    for (i = 0 ; i < 4; i++) {
-	if (mask & (1<<i)) {
-	    dst = get_dst_reg(c, inst, i);
-	    src0 = get_src_reg(c, inst, 0, i);
-	    src1 = get_src_reg_imm(c, inst, 1, i);
-	    brw_ADD(p, dst, src0, src1);
-	}
-    }
-    brw_set_saturate(p, 0);
-}
-
 static void emit_arl(struct brw_wm_compile *c,
                      const struct prog_instruction *inst)
 {
@@ -1202,63 +1163,6 @@ static void emit_arl(struct brw_wm_compile *c,
 }
 
 
-static void emit_mul(struct brw_wm_compile *c,
-                     const struct prog_instruction *inst)
-{
-    struct brw_compile *p = &c->func;
-    struct brw_reg src0, src1, dst;
-    GLuint mask = inst->DstReg.WriteMask;
-    int i;
-    brw_set_saturate(p, (inst->SaturateMode != SATURATE_OFF) ? 1 : 0);
-    for (i = 0 ; i < 4; i++) {
-	if (mask & (1<<i)) {
-	    dst = get_dst_reg(c, inst, i);
-	    src0 = get_src_reg(c, inst, 0, i);
-	    src1 = get_src_reg_imm(c, inst, 1, i);
-	    brw_MUL(p, dst, src0, src1);
-	}
-    }
-    brw_set_saturate(p, 0);
-}
-
-static void emit_frc(struct brw_wm_compile *c,
-                     const struct prog_instruction *inst)
-{
-    struct brw_compile *p = &c->func;
-    struct brw_reg src0, dst;
-    GLuint mask = inst->DstReg.WriteMask;
-    int i;
-    brw_set_saturate(p, (inst->SaturateMode != SATURATE_OFF) ? 1 : 0);
-    for (i = 0 ; i < 4; i++) {
-	if (mask & (1<<i)) {
-	    dst = get_dst_reg(c, inst, i);
-	    src0 = get_src_reg_imm(c, inst, 0, i);
-	    brw_FRC(p, dst, src0);
-	}
-    }
-    if (inst->SaturateMode != SATURATE_OFF)
-	brw_set_saturate(p, 0);
-}
-
-static void emit_flr(struct brw_wm_compile *c,
-                     const struct prog_instruction *inst)
-{
-    struct brw_compile *p = &c->func;
-    struct brw_reg src0, dst;
-    GLuint mask = inst->DstReg.WriteMask;
-    int i;
-    brw_set_saturate(p, (inst->SaturateMode != SATURATE_OFF) ? 1 : 0);
-    for (i = 0 ; i < 4; i++) {
-	if (mask & (1<<i)) {
-	    dst = get_dst_reg(c, inst, i);
-	    src0 = get_src_reg_imm(c, inst, 0, i);
-	    brw_RNDD(p, dst, src0);
-	}
-    }
-    brw_set_saturate(p, 0);
-}
-
-
 static void emit_min_max(struct brw_wm_compile *c,
                          const struct prog_instruction *inst)
 {
@@ -2824,16 +2728,16 @@ static void brw_wm_emit_glsl(struct brw_context *brw, struct brw_wm_compile *c)
 		emit_frontfacing(c, inst);
 		break;
 	    case OPCODE_ADD:
-		emit_add(c, inst);
+		emit_alu2(p, brw_ADD, dst, dst_flags, args[0], args[1]);
 		break;
 	    case OPCODE_ARL:
 		emit_arl(c, inst);
 		break;
 	    case OPCODE_FRC:
-		emit_frc(c, inst);
+		emit_alu1(p, brw_FRC, dst, dst_flags, args[0]);
 		break;
 	    case OPCODE_FLR:
-		emit_flr(c, inst);
+		emit_alu1(p, brw_RNDD, dst, dst_flags, args[0]);
 		break;
 	    case OPCODE_LRP:
 		emit_lrp(c, inst);
@@ -2843,7 +2747,7 @@ static void brw_wm_emit_glsl(struct brw_context *brw, struct brw_wm_compile *c)
 		break;
 	    case OPCODE_MOV:
 	    case OPCODE_SWZ:
-		emit_mov(c, inst);
+		emit_alu1(p, brw_MOV, dst, dst_flags, args[0]);
 		break;
 	    case OPCODE_DP3:
 		emit_dp3(c, inst);
@@ -2903,7 +2807,7 @@ static void brw_wm_emit_glsl(struct brw_context *brw, struct brw_wm_compile *c)
 		emit_sne(c, inst);
 		break;
 	    case OPCODE_MUL:
-		emit_mul(c, inst);
+		emit_alu2(p, brw_MUL, dst, dst_flags, args[0], args[1]);
 		break;
 	    case OPCODE_POW:
 		emit_pow(c, inst);
-- 
2.30.2