mesa: Add GL/GLSL plumbing for ARB_fragment_shader_interlock.

This extension provides new GLSL built-in functions
beginInvocationInterlockARB() and endInvocationInterlockARB()
that delimit a critical section of fragment shader code. For
pairs of shader invocations with "overlapping" coverage in a
given pixel, the OpenGL implementation will guarantee that the
critical section of the fragment shader will be executed for
only one fragment at a time.

Signed-off-by: Plamena Manolova <[email protected]>
Reviewed-by: Francisco Jerez <[email protected]>

1 files changed, 8 insertions, 0 deletions

diff --git a/src/compiler/glsl/linker.cpp b/src/compiler/glsl/linker.cpp
index f060c5316fa..e4bf634abe8 100644
--- a/src/compiler/glsl/linker.cpp
+++ b/src/compiler/glsl/linker.cpp
@@ -1978,6 +1978,14 @@ link_fs_inout_layout_qualifiers(struct gl_shader_program *prog,
       linked_shader->Program->info.fs.inner_coverage |= shader->InnerCoverage;
       linked_shader->Program->info.fs.post_depth_coverage |=
          shader->PostDepthCoverage;
+      linked_shader->Program->info.fs.pixel_interlock_ordered |=
+         shader->PixelInterlockOrdered;
+      linked_shader->Program->info.fs.pixel_interlock_unordered |=
+         shader->PixelInterlockUnordered;
+      linked_shader->Program->info.fs.sample_interlock_ordered |=
+         shader->SampleInterlockOrdered;
+      linked_shader->Program->info.fs.sample_interlock_unordered |=
+         shader->SampleInterlockUnordered;
 
       linked_shader->Program->sh.fs.BlendSupport |= shader->BlendSupport;
    }