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/mesa/drivers/dri/i965/brw_wm.c b/src/mesa/drivers/dri/i965/brw_wm.c
index 368499776b9..384c3f5c956 100644
--- a/src/mesa/drivers/dri/i965/brw_wm.c
+++ b/src/mesa/drivers/dri/i965/brw_wm.c
@@ -335,6 +335,7 @@ brw_populate_base_prog_key(struct gl_context *ctx,
                            struct brw_base_prog_key *key)
 {
    key->program_string_id = prog->id;
+   key->subgroup_size_type = BRW_SUBGROUP_SIZE_UNIFORM;
    brw_populate_sampler_prog_key_data(ctx, &prog->program, &key->tex);
 }
 
@@ -344,6 +345,7 @@ brw_populate_default_base_prog_key(const struct gen_device_info *devinfo,
                                    struct brw_base_prog_key *key)
 {
    key->program_string_id = prog->id;
+   key->subgroup_size_type = BRW_SUBGROUP_SIZE_UNIFORM;
    brw_setup_tex_for_precompile(devinfo, &key->tex, &prog->program);
 }