965: scan fs inputs to work out interpolation in setup program

2 files changed, 87 insertions, 45 deletions

diff --git a/src/mesa/pipe/i965simple/brw_sf.c b/src/mesa/pipe/i965simple/brw_sf.c
index 7b6fd3fff64..c04234ecf48 100644
--- a/src/mesa/pipe/i965simple/brw_sf.c
+++ b/src/mesa/pipe/i965simple/brw_sf.c
@@ -119,7 +119,11 @@ static boolean search_cache( struct brw_context *brw,
  */
 static void upload_sf_prog( struct brw_context *brw )
 {
+   const struct brw_fragment_program *fs = brw->attribs.FragmentProgram;
    struct brw_sf_prog_key key;
+   struct tgsi_parse_context parse;
+   int i, done = 0;
+
 
    memset(&key, 0, sizeof(key));
 
@@ -149,6 +153,63 @@ static void upload_sf_prog( struct brw_context *brw )
    }
 
 
+
+   /* Scan fp inputs to figure out what interpolation modes are
+    * required for each incoming vp output.  There is an assumption
+    * that the state tracker makes sure there is a 1:1 linkage between
+    * these sets of attributes (XXX: position??)
+    */
+   tgsi_parse_init( &parse, fs->program.tokens );
+   while( !done &&
+	  !tgsi_parse_end_of_tokens( &parse ) ) 
+   {
+      tgsi_parse_token( &parse );
+
+      switch( parse.FullToken.Token.Type ) {
+      case TGSI_TOKEN_TYPE_DECLARATION:
+	 if (parse.FullToken.FullDeclaration.Declaration.File == TGSI_FILE_INPUT) 
+	 {
+	    int first = parse.FullToken.FullDeclaration.u.DeclarationRange.First;
+	    int last = parse.FullToken.FullDeclaration.u.DeclarationRange.Last;
+	    int interp_mode = parse.FullToken.FullDeclaration.Interpolation.Interpolate;
+	    //int semantic = parse.FullToken.FullDeclaration.Semantic.SemanticName;
+	    //int semantic_index = parse.FullToken.FullDeclaration.Semantic.SemanticIndex;
+
+	    _mesa_printf("fs input %d..%d interp mode %d\n", first, last, interp_mode);
+	    
+	    switch (interp_mode) {
+	    case TGSI_INTERPOLATE_CONSTANT:
+	       for (i = first; i <= last; i++) 
+		  key.const_mask |= (1 << i);
+	       break;
+	    case TGSI_INTERPOLATE_LINEAR:
+	       for (i = first; i <= last; i++) 
+		  key.linear_mask |= (1 << i);
+	       break;
+	    case TGSI_INTERPOLATE_PERSPECTIVE:
+	       for (i = first; i <= last; i++) 
+		  key.persp_mask |= (1 << i);
+	       break;
+	    default:
+	       break;
+	    }
+
+	    /* Also need stuff for flat shading, twosided color.
+	     */
+
+	 }
+	 break;
+      default:
+	 done = 1;
+	 break;
+      }
+   }
+
+   _mesa_printf("key.persp_mask: %x\n", key.persp_mask);
+   _mesa_printf("key.linear_mask: %x\n", key.linear_mask);
+   _mesa_printf("key.const_mask: %x\n", key.const_mask);
+
+
 //   key.do_point_sprite = brw->attribs.Point->PointSprite;
 //   key.SpriteOrigin = brw->attribs.Point->SpriteOrigin;
 
@@ -176,6 +237,8 @@ const struct brw_tracked_state brw_sf_prog = {
 };
 
 
+
+#if 0
 /* Build a struct like the one we'd like the state tracker to pass to
  * us.
  */
@@ -202,43 +265,6 @@ static void update_sf_linkage( struct brw_context *brw )
 
 
    
-   /* First scan fp inputs
-    */
-   tgsi_parse_init( &parse, fs->program.tokens );
-   while( !done &&
-	  !tgsi_parse_end_of_tokens( &parse ) ) 
-   {
-      tgsi_parse_token( &parse );
-
-      switch( parse.FullToken.Token.Type ) {
-      case TGSI_TOKEN_TYPE_DECLARATION:
-	 if (parse.FullToken.FullDeclaration.Declaration.File == TGSI_FILE_INPUT) 
-	 {
-	    int first = parse.FullToken.FullDeclaration.u.DeclarationRange.First;
-	    int last = parse.FullToken.FullDeclaration.u.DeclarationRange.Last;
-
-	    for (i = first; i < last; i++) {
-	       state.fp_input[i].vp_output = ~0;
-	       state.fp_input[i].bf_vp_output = ~0;
-	       state.fp_input[i].interp_mode = 
-		  parse.FullToken.FullDeclaration.Interpolation.Interpolate;
-
-	       fp_semantic[i].semantic = 
-		  parse.FullToken.FullDeclaration.Semantic.SemanticName;
-	       fp_semantic[i].semantic_index = 
-		  parse.FullToken.FullDeclaration.Semantic.SemanticIndex;
-
-	    }
-
-	    assert(last > state.fp_input_count);
-	    state.fp_input_count = last;
-	 }
-	 break;
-      default:
-	 done = 1;
-	 break;
-      }
-   }
 
 
    assert(state.fp_input_count == fs->program.num_inputs);
@@ -313,3 +339,5 @@ const struct brw_tracked_state brw_sf_linkage = {
    .update = update_sf_linkage
 };
 
+
+#endif
diff --git a/src/mesa/pipe/i965simple/brw_sf_emit.c b/src/mesa/pipe/i965simple/brw_sf_emit.c
index 0fa61f14b6f..bc3878a93a6 100644
--- a/src/mesa/pipe/i965simple/brw_sf_emit.c
+++ b/src/mesa/pipe/i965simple/brw_sf_emit.c
@@ -134,30 +134,39 @@ static boolean calculate_masks( struct brw_sf_compile *c,
 				  ushort *pc_linear)
 {
    boolean is_last_attr = (reg == c->nr_setup_regs - 1);
+   unsigned persp_mask = c->key.persp_mask;
+   unsigned linear_mask = c->key.linear_mask;
 
+   _mesa_printf("persp_mask: %x\n", persp_mask);
+   _mesa_printf("linear_mask: %x\n", linear_mask);
 
    *pc_persp = 0;
    *pc_linear = 0;
    *pc = 0xf;
 
-//   if (persp_mask & (1 << c->idx_to_attr[reg*2]))
-//      *pc_persp = 0xf;
+   if (persp_mask & (1 << (reg*2)))
+      *pc_persp = 0xf;
 
-//   if (linear_mask & (1 << c->idx_to_attr[reg*2]))
+   if (linear_mask & (1 << (reg*2)))
       *pc_linear = 0xf;
 
    /* Maybe only processs one attribute on the final round:
     */
-   if (1 || reg*2+1 < c->nr_setup_attrs) {
+   if (reg*2+1 < c->nr_setup_attrs) {
       *pc |= 0xf0;
 
-//      if (persp_mask & (1 << c->idx_to_attr[reg*2+1]))
-//	 *pc_persp |= 0xf0;
+      if (persp_mask & (1 << (reg*2+1)))
+	 *pc_persp |= 0xf0;
 
-//      if (linear_mask & (1 << c->idx_to_attr[reg*2+1]))
+      if (linear_mask & (1 << (reg*2+1)))
 	 *pc_linear |= 0xf0;
    }
 
+   _mesa_printf("pc: %x\n", *pc);
+   _mesa_printf("pc_persp: %x\n", *pc_persp);
+   _mesa_printf("pc_linear: %x\n", *pc_linear);
+   
+
    return is_last_attr;
 }
 
@@ -168,6 +177,8 @@ void brw_emit_tri_setup( struct brw_sf_compile *c )
    struct brw_compile *p = &c->func;
    unsigned i;
 
+   _mesa_printf("%s START ==============\n", __FUNCTION__);
+
    c->nr_verts = 3;
    alloc_regs(c);
    invert_det(c);
@@ -181,7 +192,7 @@ void brw_emit_tri_setup( struct brw_sf_compile *c )
       struct brw_reg a0 = offset(c->vert[0], i);
       struct brw_reg a1 = offset(c->vert[1], i);
       struct brw_reg a2 = offset(c->vert[2], i);
-      ushort pc, pc_persp, pc_linear;
+      ushort pc = 0, pc_persp = 0, pc_linear = 0;
       boolean last = calculate_masks(c, i, &pc, &pc_persp, &pc_linear);
 
       if (pc_persp)
@@ -238,6 +249,9 @@ void brw_emit_tri_setup( struct brw_sf_compile *c )
 		       BRW_URB_SWIZZLE_TRANSPOSE); /* XXX: Swizzle control "SF to windower" */
       }
    }
+
+   _mesa_printf("%s DONE ==============\n", __FUNCTION__);
+
 }