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glsl: Add support for new fma built-in in ARB_gpu_shader5.

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v2: Add constant folding support.
Reviewed-by: Paul Berry <stereotype441@gmail.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
This commit is contained in:
Matt Turner
2013-04-23 17:19:06 -07:00
parent 6829c18609
commit d55c543c36
6 changed files with 22 additions and 0 deletions
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src/glsl/ir_constant_expression.cpp
+11
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@@ -1375,6 +1375,17 @@ ir_expression::constant_expression_value(struct hash_table *variable_context)
break;
}
case ir_triop_fma:
assert(op[0]->type->base_type == GLSL_TYPE_FLOAT);
assert(op[1]->type->base_type == GLSL_TYPE_FLOAT);
assert(op[2]->type->base_type == GLSL_TYPE_FLOAT);
for (unsigned c = 0; c < components; c++) {
data.f[c] = op[0]->value.f[c] * op[1]->value.f[c]
+ op[2]->value.f[c];
}
break;
case ir_triop_lrp: {
assert(op[0]->type->base_type == GLSL_TYPE_FLOAT);
assert(op[1]->type->base_type == GLSL_TYPE_FLOAT);