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st/glsl_to_tgsi: fix block copies of arrays of structs

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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.

v2: use C-style comment (Timothy Arceri)

Reviewed-by: Marek Olšák <marek.olsak@amd.com> (v1)
Cc: 13.0 <mesa-stable@lists.freedesktop.org>
(cherry picked from commit a1895685f8)
This commit is contained in:
Nicolai Hähnle 2016-10-16 17:34:33 +02:00 • committed by Emil Velikov
parent 3581e21d5b
commit 8f807e914f
1 changed files with 4 additions and 2 deletions
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6
src/mesa/state_tracker/st_glsl_to_tgsi.cpp
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@ -2941,10 +2941,12 @@ glsl_to_tgsi_visitor::visit(ir_assignment *ir)
} 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 {