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ir_constant_expression: Add support for "atan" builtins.

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This commit is contained in:
Kenneth Graunke
2010-07-21 17:42:23 -07:00
parent f6ea9dfe47
commit 13f8758e9c
1 changed files with 9 additions and 1 deletions
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10
src/glsl/ir_constant_expression.cpp
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@@ -826,7 +826,15 @@ ir_call::constant_expression_value()
for (unsigned c = 0; c < op[0]->type->components(); c++)
data.f[c] = asinf(op[0]->value.f[c]);
} else if (strcmp(callee, "atan") == 0) {
return NULL; /* FINISHME: implement this */
assert(op[0]->type->is_float());
if (num_parameters == 2) {
assert(op[1]->type->is_float());
for (unsigned c = 0; c < op[0]->type->components(); c++)
data.f[c] = atan2f(op[0]->value.f[c], op[1]->value.f[c]);
} else {
for (unsigned c = 0; c < op[0]->type->components(); c++)
data.f[c] = atanf(op[0]->value.f[c]);
}
} else if (strcmp(callee, "dFdx") == 0 || strcmp(callee, "dFdy") == 0) {
return ir_constant::zero(mem_ctx, this->type);
} else if (strcmp(callee, "ceil") == 0) {