From 753f979a32cdbbe76dfacf95cbc3b43545a7d1ad Mon Sep 17 00:00:00 2001
From: Brian Paul <brian.paul@tungstengraphics.com>
Date: Wed, 14 May 2008 16:20:28 -0600
Subject: rewrite some of the mat*mat, mat*vec intrinsics

Also, remove obsolete matrix codegen code.

cherry-picked from master
---
 src/mesa/shader/slang/slang_codegen.c | 44 -----------------------------------
 1 file changed, 44 deletions(-)

(limited to 'src/mesa/shader/slang/slang_codegen.c')

diff --git a/src/mesa/shader/slang/slang_codegen.c b/src/mesa/shader/slang/slang_codegen.c
index 15a0e3abcd..8ea6a8dcd9 100644
--- a/src/mesa/shader/slang/slang_codegen.c
+++ b/src/mesa/shader/slang/slang_codegen.c
@@ -2514,49 +2514,6 @@ _slang_gen_subscript(slang_assemble_ctx * A, slang_operation *oper)
 }
 
 
-/**
- * Look for expressions such as:  gl_ModelviewMatrix * gl_Vertex
- * and replace with this:  gl_Vertex * gl_ModelviewMatrixTranpose
- * Since matrices are stored in column-major order, the second form of
- * multiplication is much more efficient (just 4 dot products).
- */
-static void
-_slang_check_matmul_optimization(slang_assemble_ctx *A, slang_operation *oper)
-{
-   static const struct {
-      const char *orig;
-      const char *tranpose;
-   } matrices[] = {
-      {"gl_ModelViewMatrix", "gl_ModelViewMatrixTranspose"},
-      {"gl_ProjectionMatrix", "gl_ProjectionMatrixTranspose"},
-      {"gl_ModelViewProjectionMatrix", "gl_ModelViewProjectionMatrixTranspose"},
-      {"gl_TextureMatrix", "gl_TextureMatrixTranspose"},
-      {"gl_NormalMatrix", "__NormalMatrixTranspose"},
-      { NULL, NULL }
-   };
-
-   assert(oper->type == SLANG_OPER_MULTIPLY);
-   if (oper->children[0].type == SLANG_OPER_IDENTIFIER) {
-      GLuint i;
-      for (i = 0; matrices[i].orig; i++) {
-         if (oper->children[0].a_id
-             == slang_atom_pool_atom(A->atoms, matrices[i].orig)) {
-            /*
-            _mesa_printf("Replace %s with %s\n",
-                         matrices[i].orig, matrices[i].tranpose);
-            */
-            assert(oper->children[0].type == SLANG_OPER_IDENTIFIER);
-            oper->children[0].a_id
-               = slang_atom_pool_atom(A->atoms, matrices[i].tranpose);
-            /* finally, swap the operands */
-            _slang_operation_swap(&oper->children[0], &oper->children[1]);
-            return;
-         }
-      }
-   }
-}
-
-
 /**
  * Generate IR tree for a slang_operation (AST node)
  */
@@ -2690,7 +2647,6 @@ _slang_gen_operation(slang_assemble_ctx * A, slang_operation *oper)
       {
 	 slang_ir_node *n;
          assert(oper->num_children == 2);
-         _slang_check_matmul_optimization(A, oper);
          n = _slang_gen_function_call_name(A, "*", oper, NULL);
 	 return n;
       }
-- 
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