summaryrefslogtreecommitdiffstats
path: root/src/glsl
diff options
context:
space:
mode:
authorKenneth Graunke <[email protected]>2010-07-21 20:19:32 -0700
committerKenneth Graunke <[email protected]>2010-07-28 15:46:28 -0700
commit53f306d573ce6393062cf86d4fe31148eacc5e1e (patch)
tree24b8687507e9f9cb7a235a72e2c5e00d68892fa6 /src/glsl
parent8fe5f30645e1b6a87497c1abc408ade633e9ebc1 (diff)
ir_constant_expression: Add support for the "normalize" builtin.
Diffstat (limited to 'src/glsl')
-rw-r--r--src/glsl/ir_constant_expression.cpp9
1 files changed, 8 insertions, 1 deletions
diff --git a/src/glsl/ir_constant_expression.cpp b/src/glsl/ir_constant_expression.cpp
index 2c80c8b5e09..809ea609a3d 100644
--- a/src/glsl/ir_constant_expression.cpp
+++ b/src/glsl/ir_constant_expression.cpp
@@ -977,7 +977,14 @@ ir_call::constant_expression_value()
} else if (strcmp(callee, "mod") == 0) {
expr = new(mem_ctx) ir_expression(ir_binop_mod, type, op[0], op[1]);
} else if (strcmp(callee, "normalize") == 0) {
- return NULL; /* FINISHME: implement this */
+ assert(op[0]->type->is_float());
+ float length = sqrtf(dot(op[0], op[0]));
+
+ if (length == 0)
+ return ir_constant::zero(mem_ctx, this->type);
+
+ for (unsigned c = 0; c < op[0]->type->components(); c++)
+ data.f[c] = op[0]->value.f[c] / length;
} else if (strcmp(callee, "not") == 0) {
expr = new(mem_ctx) ir_expression(ir_unop_logic_not, type, op[0], NULL);
} else if (strcmp(callee, "notEqual") == 0) {