On 11/12/2015 05:47 PM, Ilia Mirkin wrote:
On Mon, Nov 2, 2015 at 6:36 AM, Tapani Pälli <tapani.pa...@intel.com> wrote:
Patch sets matrix_stride as 0 for non matrix uniforms that are in a
atomic counter buffer. Matrix stride calculation for actual matrix
uniforms is done during link_assign_uniform_locations.
From ARB_program_interface_query specification:
GL_MATRIX_STRIDE:
"For active variables not declared as a matrix or array of matrices,
zero is written to <params>. For active variables not backed by a
buffer object, -1 is written to <params>, regardless of the variable
type."
Signed-off-by: Tapani Pälli <tapani.pa...@intel.com>
---
src/glsl/link_atomics.cpp | 2 ++
1 file changed, 2 insertions(+)
diff --git a/src/glsl/link_atomics.cpp b/src/glsl/link_atomics.cpp
index cdcc06d..3aa52db 100644
--- a/src/glsl/link_atomics.cpp
+++ b/src/glsl/link_atomics.cpp
@@ -240,6 +240,8 @@ link_assign_atomic_counter_resources(struct gl_context *ctx,
storage->offset = var->data.atomic.offset;
storage->array_stride = (var->type->is_array() ?
var->type->without_array()->atomic_size() :
0);
+ if (!var->type->is_matrix())
+ storage->matrix_stride = 0;
Can atomics ever be in matrices?
Nope, but one can query matrix stride property of a uniform that is
'backed by' atomic counter buffer.
-ilia
// Tapani
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