diff options
| author | Kenneth Graunke <kenneth@whitecape.org> | 2010-07-21 20:19:32 -0700 |
|---|---|---|
| committer | Kenneth Graunke <kenneth@whitecape.org> | 2010-07-28 15:46:28 -0700 |
| commit | 53f306d573ce6393062cf86d4fe31148eacc5e1e (patch) | |
| tree | 24b8687507e9f9cb7a235a72e2c5e00d68892fa6 /src/glsl/ir_constant_expression.cpp | |
| parent | 8fe5f30645e1b6a87497c1abc408ade633e9ebc1 (diff) | |
ir_constant_expression: Add support for the "normalize" builtin.
Diffstat (limited to 'src/glsl/ir_constant_expression.cpp')
| -rw-r--r-- | src/glsl/ir_constant_expression.cpp | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/src/glsl/ir_constant_expression.cpp b/src/glsl/ir_constant_expression.cpp index 2c80c8b5e0..809ea609a3 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) { |