From: Nicolai Hähnle <nicolai.haeh...@amd.com>
Use a full writemask in this case. This is relevant e.g. when a function
has an inout argument which is an array of structs.
---
src/mesa/state_tracker/st_glsl_to_tgsi.cpp | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
index 1662f7f..b91ebaf 100644
--- a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
+++ b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
@@ -2964,24 +2964,26 @@ glsl_to_tgsi_visitor::visit(ir_assignment *ir)
if (variable->data.location == FRAG_RESULT_DEPTH)
l.writemask = WRITEMASK_Z;
else {
assert(variable->data.location == FRAG_RESULT_STENCIL);
l.writemask = WRITEMASK_Y;
}
} else if (ir->write_mask == 0) {
assert(!ir->lhs->type->is_scalar() && !ir->lhs->type->is_vector());
- if (ir->lhs->type->is_array() || ir->lhs->type->is_matrix()) {
- unsigned num_elements =
ir->lhs->type->without_array()->vector_elements;
+ unsigned num_elements =
ir->lhs->type->without_array()->vector_elements;
+
+ if (num_elements) {
l.writemask = u_bit_consecutive(0, num_elements);
} else {
+ // The type is a struct or an array of (array of) structs.
l.writemask = WRITEMASK_XYZW;
}
} else {
l.writemask = ir->write_mask;
}
for (int i = 0; i < 4; i++) {
if (l.writemask & (1 << i)) {
first_enabled_chan = GET_SWZ(r.swizzle, i);
break;
--
2.7.4
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