intel/compiler: Be more conservative about subgroup sizes in GL

The rules for gl_SubgroupSize in Vulkan require that it be a constant
that can be queried through the API.  However, all GL requires is that
it's a uniform.  Instead of always claiming that the subgroup size in
the shader is 32 in GL like we have to do for Vulkan, claim 8 for
geometry stages, the maximum for fragment shaders, and the actual size
for compute.

Reviewed-by: Caio Marcelo de Oliveira Filho <[email protected]>

1 files changed, 2 insertions, 0 deletions

diff --git a/src/intel/vulkan/anv_pipeline.c b/src/intel/vulkan/anv_pipeline.c
index 697c1850221..5266fb0dc34 100644
--- a/src/intel/vulkan/anv_pipeline.c
+++ b/src/intel/vulkan/anv_pipeline.c
@@ -355,6 +355,8 @@ static void
 populate_base_prog_key(const struct gen_device_info *devinfo,
                        struct brw_base_prog_key *key)
 {
+   key->subgroup_size_type = BRW_SUBGROUP_SIZE_API_CONSTANT;
+
    populate_sampler_prog_key(devinfo, &key->tex);
 }