From: Tapani Pälli <[email protected]>
Patch makes following Piglit test pass:
arb_gpu_shader_fp64/compiler/double-loop-iterator.vert
v2: make also sure that calculate_iterations handles
double correctly, now the test *really* passes
Signed-off-by: Tapani Pälli <[email protected]>
---
src/glsl/loop_controls.cpp | 19 +++++++++++++++----
1 file changed, 15 insertions(+), 4 deletions(-)
diff --git a/src/glsl/loop_controls.cpp b/src/glsl/loop_controls.cpp
index 1c1d34f..9a99c21 100644
--- a/src/glsl/loop_controls.cpp
+++ b/src/glsl/loop_controls.cpp
@@ -102,10 +102,18 @@ calculate_iterations(ir_rvalue *from, ir_rvalue *to,
ir_rvalue *increment,
return -1;
if (!iter->type->is_integer()) {
- ir_rvalue *cast =
- new(mem_ctx) ir_expression(ir_unop_f2i, glsl_type::int_type, iter,
- NULL);
-
+ ir_rvalue *cast = NULL;
+ if (iter->type->is_double()) {
+ ir_expression *d2f =
+ new(mem_ctx) ir_expression(ir_unop_d2f, glsl_type::float_type,
+ iter, NULL);
+ cast = new(mem_ctx) ir_expression(ir_unop_f2i, glsl_type::int_type,
+ (ir_rvalue*) d2f, NULL);
+ } else {
+ cast = new(mem_ctx) ir_expression(ir_unop_f2i, glsl_type::int_type,
iter,
+ NULL);
+ }
+ assert(cast);
iter = cast->constant_expression_value();
}
@@ -134,6 +142,9 @@ calculate_iterations(ir_rvalue *from, ir_rvalue *to,
ir_rvalue *increment,
case GLSL_TYPE_FLOAT:
iter = new(mem_ctx) ir_constant(float(iter_value + bias[i]));
break;
+ case GLSL_TYPE_DOUBLE:
+ iter = new(mem_ctx) ir_constant(double(iter_value + bias[i]));
+ break;
default:
unreachable(!"Unsupported type for loop iterator.");
}
--
2.1.0
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