intel/compiler: Add max_polygons FS compilation parameter.

Add a brw_compile_fs_params parameter that specifies to the compiler
the maximum number of polygons that may be processed in parallel per
PS SIMD thread.

Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Caio Oliveira <caio.oliveira@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/26585>

src/gallium/drivers/crocus/crocus_program.c

@@ -1851,6 +1851,7 @@ crocus_compile_fs(struct crocus_context *ice,
       .prog_data = fs_prog_data,
 
       .allow_spilling = true,
+      .max_polygons = 1,
       .vue_map = vue_map,
    };
    const unsigned *program =

src/gallium/drivers/iris/iris_program.c

@@ -1966,6 +1966,7 @@ iris_compile_fs(struct iris_screen *screen,
       .prog_data = fs_prog_data,
 
       .allow_spilling = true,
+      .max_polygons = 1,
       .vue_map = vue_map,
    };
 

src/intel/blorp/blorp.c

@@ -302,6 +302,7 @@ blorp_compile_fs(struct blorp_context *blorp, void *mem_ctx,
       .prog_data = wm_prog_data,
 
       .use_rep_send = use_repclear,
+      .max_polygons = 1,
    };
 
    return brw_compile_fs(compiler, &params);

src/intel/compiler/brw_compiler.h

@@ -2014,6 +2014,7 @@ struct brw_compile_fs_params {
 
    bool allow_spilling;
    bool use_rep_send;
+   uint8_t max_polygons;
 };
 
 /**

src/intel/vulkan/anv_pipeline.c

@@ -1520,6 +1520,7 @@ anv_pipeline_compile_fs(const struct brw_compiler *compiler,
       .prog_data = &fs_stage->prog_data.wm,
 
       .allow_spilling = true,
+      .max_polygons = 1,
    };
 
    if (prev_stage && prev_stage->stage == MESA_SHADER_MESH) {