radv: add support for some device specific tess information.

Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Dave Airlie <airlied@redhat.com>

src/amd/vulkan/radv_device.c

 
 	radv_device_init_gs_info(device);
 
+	device->tess_offchip_block_dw_size =
+		device->physical_device->rad_info.family == CHIP_HAWAII ? 4096 : 8192;
+	device->has_distributed_tess =
+		device->physical_device->rad_info.chip_class >= VI &&
+		device->physical_device->rad_info.max_se >= 2;
+
 	result = radv_device_init_meta(device);
 	if (result != VK_SUCCESS)
 		goto fail;

src/amd/vulkan/radv_private.h

 	uint64_t debug_flags;
 
 	bool llvm_supports_spill;
+	bool has_distributed_tess;
+	uint32_t tess_offchip_block_dw_size;
 	uint32_t scratch_waves;
 
 	uint32_t gs_table_depth;