i965g: plumb through fb_write target and eot data

src/gallium/drivers/i965/brw_wm.h

@@ -142,9 +142,10 @@ struct brw_wm_instruction {
    GLuint saturate:1;
    GLuint writemask:4;
    GLuint tex_unit:4;   /* texture/sampler unit for texture instructions */
-   GLuint tex_target:4; /* TGSI_TEXTURE_x for texture instructions*/
+   GLuint target:4;     /* TGSI_TEXTURE_x for texture instructions,
+                         * target binding table index for FB_WRITE
+                         */
    GLuint eot:1;    	/* End of thread indicator for FB_WRITE*/
-   GLuint target:10;    /* target binding table index for FB_WRITE*/
 };
 
 
@@ -204,10 +205,9 @@ struct brw_fp_instruction {
    struct brw_fp_dst dst;
    struct brw_fp_src src[3];
    unsigned opcode:8;
+   unsigned target:8; /* XXX: special usage for FB_WRITE */
    unsigned tex_unit:4;
-   unsigned tex_target:4;
-   unsigned target:10;		/* destination surface for FB_WRITE */
-   unsigned eot:1;		/* mark last instruction (usually FB_WRITE) */
+   unsigned pad:12;
 };
 
 

src/gallium/drivers/i965/brw_wm_emit.c

@@ -803,7 +803,7 @@ static void emit_tex( struct brw_wm_compile *c,
 
    /* How many input regs are there?
     */
-   switch (inst->tex_target) {
+   switch (inst->target) {
    case TGSI_TEXTURE_1D:
       emit = BRW_WRITEMASK_X;
       nr = 1;
@@ -885,7 +885,7 @@ static void emit_txb( struct brw_wm_compile *c,
    GLuint msg_type;
    /* Shadow ignored for txb.
     */
-   switch (inst->tex_target) {
+   switch (inst->target) {
    case TGSI_TEXTURE_1D:
    case TGSI_TEXTURE_SHADOW1D:
       brw_MOV(p, brw_message_reg(2), arg[0]);

src/gallium/drivers/i965/brw_wm_fp.c

@@ -280,18 +280,24 @@ static struct brw_fp_instruction *get_fp_inst(struct brw_wm_compile *c)
 static struct brw_fp_instruction * emit_tex_op(struct brw_wm_compile *c,
 					     GLuint op,
 					     struct brw_fp_dst dest,
-					     GLuint tex_src_unit,
-					     GLuint tex_src_target,
+					     GLuint tex_unit,
+					     GLuint target,
 					     struct brw_fp_src src0,
 					     struct brw_fp_src src1,
 					     struct brw_fp_src src2 )
 {
    struct brw_fp_instruction *inst = get_fp_inst(c);
 
+   if (tex_unit || target)
+      assert(op == TGSI_OPCODE_TXP ||
+             op == TGSI_OPCODE_TXB ||
+             op == TGSI_OPCODE_TEX ||
+             op == WM_FB_WRITE);
+
    inst->opcode = op;
    inst->dst = dest;
-   inst->tex_unit = tex_src_unit;
-   inst->tex_target = tex_src_target;
+   inst->tex_unit = tex_unit;
+   inst->target = target;
    inst->src[0] = src0;
    inst->src[1] = src1;
    inst->src[2] = src2;
@@ -916,23 +922,17 @@ static void emit_fb_write( struct brw_wm_compile *c )
 
    for (i = 0 ; i < c->key.nr_cbufs; i++) {
       struct brw_fp_src outcolor;
-      unsigned target = 1<<i;
-
-      /* Set EOT flag on last inst:
-       */
-      if (i == c->key.nr_cbufs - 1)
-	 target |= 1;
       
       outcolor = find_output_by_semantic(c, TGSI_SEMANTIC_COLOR, i);
 
-      /* Use emit_tex_op so that we can specify the inst->tex_target
+      /* Use emit_tex_op so that we can specify the inst->target
        * field, which is abused to contain the FB write target and the
        * EOT marker
        */
       emit_tex_op(c, WM_FB_WRITE,
 		  dst_undef(),
-		  target,
-		  0,
+		  (i == c->key.nr_cbufs - 1), /* EOT */
+		  i,
 		  outcolor,
 		  payload_r0_depth,
 		  outdepth);

src/gallium/drivers/i965/brw_wm_pass0.c

@@ -274,9 +274,13 @@ translate_insn(struct brw_wm_compile *c,
    out->opcode = inst->opcode;
    out->saturate = inst->dst.saturate;
    out->tex_unit = inst->tex_unit;
-   out->tex_target = inst->tex_target;
-   out->eot = inst->eot; //inst->Aux & 1;
-   out->target = inst->target; //inst->Aux >> 1;
+   out->target = inst->target;
+
+   /* Nasty hack:
+    */
+   out->eot = (inst->opcode == WM_FB_WRITE &&
+               inst->tex_unit != 0);
+
 
    /* Args:
     */

src/gallium/drivers/i965/brw_wm_pass1.c

@@ -223,11 +223,11 @@ void brw_wm_pass1( struct brw_wm_compile *c )
 
       case TGSI_OPCODE_TEX:
       case TGSI_OPCODE_TXP:
-	 read0 = get_texcoord_mask(inst->tex_target);
+	 read0 = get_texcoord_mask(inst->target);
 	 break;
 
       case TGSI_OPCODE_TXB:
-	 read0 = get_texcoord_mask(inst->tex_target) | BRW_WRITEMASK_W;
+	 read0 = get_texcoord_mask(inst->target) | BRW_WRITEMASK_W;
 	 break;
 
       case WM_WPOSXY: