From: Dave Airlie Date: Mon, 19 Mar 2018 04:27:49 +0000 (+0000) Subject: radv: lower constant initializers on output variables earlier X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=e8d9b7ab02fc56cadffc7a2bb993b39cccde2b66;p=mesa.git radv: lower constant initializers on output variables earlier If a shader only writes to an output via a constant initializer we need to lower it before we call nir_remove_dead_variables so that this pass sees the stores from the initializer and doesn't kill the output. Fixes test failures in new work-in-progress CTS tests: dEQP-VK.spirv_assembly.instruction.graphics.variable_init.output.float This is ported from anv: 99b57daf4a anv/pipeline: lower constant initializers on output variables earlier from Iago Toral Quiroga Reviewed-by: Bas Nieuwenhuizen Reviewed-by: Samuel Pitoiset --- diff --git a/src/amd/vulkan/radv_shader.c b/src/amd/vulkan/radv_shader.c index 180b427a442..ac577c36e9f 100644 --- a/src/amd/vulkan/radv_shader.c +++ b/src/amd/vulkan/radv_shader.c @@ -244,6 +244,11 @@ radv_shader_compile_to_nir(struct radv_device *device, assert(exec_list_length(&nir->functions) == 1); entry_point->name = ralloc_strdup(entry_point, "main"); + /* Make sure we lower constant initializers on output variables so that + * nir_remove_dead_variables below sees the corresponding stores + */ + NIR_PASS_V(nir, nir_lower_constant_initializers, nir_var_shader_out); + NIR_PASS_V(nir, nir_remove_dead_variables, nir_var_shader_in | nir_var_shader_out | nir_var_system_value);