commit 5489ad086f77e548905c98ccd27cd626d706d5f9
author Kenneth Graunke <kenneth@whitecape.org> Wed Jul 21 18:26:00 2010 -0700
committer Kenneth Graunke <kenneth@whitecape.org> Wed Jul 28 15:46:28 2010 -0700
tree 8f41c1cdb98f453b8eb30c516f5ffcd7b4b9b905
parent ffcec135997545b4dc2b3393ccb02558083373a0

ir_constant_expression: Add support for the "length" builtin.

src/glsl/ir_constant_expression.cpp

diff --git a/src/glsl/ir_constant_expression.cpp b/src/glsl/ir_constant_expression.cpp
index c4a416a..83d1b34 100644
--- a/src/glsl/ir_constant_expression.cpp
+++ b/src/glsl/ir_constant_expression.cpp
@@ -925,7 +925,7 @@
    } else if (strcmp(callee, "inversesqrt") == 0) {
       expr = new(mem_ctx) ir_expression(ir_unop_rsq, type, op[0], NULL);
    } else if (strcmp(callee, "length") == 0) {
-      return NULL; /* FINISHME: implement this */
+      return new(mem_ctx) ir_constant(sqrtf(dot(op[0], op[0])));
    } else if (strcmp(callee, "lessThan") == 0) {
       assert(op[0]->type->is_vector() && op[1] && op[1]->type->is_vector());
       for (unsigned c = 0; c < op[0]->type->components(); c++) {