From: Jason Ekstrand Date: Thu, 2 Jun 2016 01:46:30 +0000 (-0700) Subject: i965/fs Add a wm_prog_data bit for has_side_effects X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=3fb289f957a8a27349a6f7df03983f92d9b6cf64;p=mesa.git i965/fs Add a wm_prog_data bit for has_side_effects This is more accurate than calling _mesa_active_fragment_shader_has_side_effects because it looks at whether or not the SSBOs, images, or atomic buffers are actually written rather than just existing in the program. Signed-off-by: Jason Ekstrand Reviewed-by: Kenneth Graunke Cc: "12.0" --- diff --git a/src/mesa/drivers/dri/i965/brw_compiler.h b/src/mesa/drivers/dri/i965/brw_compiler.h index 6e6d20c7d38..f55b7f37ffe 100644 --- a/src/mesa/drivers/dri/i965/brw_compiler.h +++ b/src/mesa/drivers/dri/i965/brw_compiler.h @@ -402,6 +402,7 @@ struct brw_wm_prog_data { bool uses_src_depth; bool uses_src_w; bool uses_sample_mask; + bool has_side_effects; bool pulls_bary; /** diff --git a/src/mesa/drivers/dri/i965/brw_fs_nir.cpp b/src/mesa/drivers/dri/i965/brw_fs_nir.cpp index 7fc43b5061d..a4e5559a369 100644 --- a/src/mesa/drivers/dri/i965/brw_fs_nir.cpp +++ b/src/mesa/drivers/dri/i965/brw_fs_nir.cpp @@ -3331,6 +3331,10 @@ fs_visitor::nir_emit_intrinsic(const fs_builder &bld, nir_intrinsic_instr *instr case nir_intrinsic_atomic_counter_inc: case nir_intrinsic_atomic_counter_dec: case nir_intrinsic_atomic_counter_read: { + if (stage == MESA_SHADER_FRAGMENT && + instr->intrinsic != nir_intrinsic_atomic_counter_read) + ((struct brw_wm_prog_data *)prog_data)->has_side_effects = true; + /* Get the arguments of the atomic intrinsic. */ const fs_reg offset = get_nir_src(instr->src[0]); const unsigned surface = (stage_prog_data->binding_table.abo_start + @@ -3377,6 +3381,10 @@ fs_visitor::nir_emit_intrinsic(const fs_builder &bld, nir_intrinsic_instr *instr case nir_intrinsic_image_atomic_comp_swap: { using namespace image_access; + if (stage == MESA_SHADER_FRAGMENT && + instr->intrinsic != nir_intrinsic_image_load) + ((struct brw_wm_prog_data *)prog_data)->has_side_effects = true; + /* Get the referenced image variable and type. */ const nir_variable *var = instr->variables[0]->var; const glsl_type *type = var->type->without_array(); @@ -3690,6 +3698,9 @@ fs_visitor::nir_emit_intrinsic(const fs_builder &bld, nir_intrinsic_instr *instr case nir_intrinsic_store_ssbo: { assert(devinfo->gen >= 7); + if (stage == MESA_SHADER_FRAGMENT) + ((struct brw_wm_prog_data *)prog_data)->has_side_effects = true; + /* Block index */ fs_reg surf_index; nir_const_value *const_uniform_block = @@ -3893,6 +3904,9 @@ void fs_visitor::nir_emit_ssbo_atomic(const fs_builder &bld, int op, nir_intrinsic_instr *instr) { + if (stage == MESA_SHADER_FRAGMENT) + ((struct brw_wm_prog_data *)prog_data)->has_side_effects = true; + fs_reg dest; if (nir_intrinsic_infos[instr->intrinsic].has_dest) dest = get_nir_dest(instr->dest);