From 4a87e4ade778e56d43333c65a58752b15a00ce69 Mon Sep 17 00:00:00 2001 From: Francisco Jerez Date: Thu, 21 Jul 2016 12:46:04 -0700 Subject: [PATCH] i965/fs: Get rid of fs_visitor::do_dual_src. This boolean flag was being used for two different things: - To set the brw_wm_prog_data::dual_src_blend flag. Instead we can just set it based on whether the dual_src_output register is valid, which will be the case if the shader writes the secondary blending color. - To decide whether to call emit_single_fb_write() once, or in a loop that would iterate only once, which seems pretty useless. Reviewed-by: Kenneth Graunke --- src/mesa/drivers/dri/i965/brw_fs.h | 1 - src/mesa/drivers/dri/i965/brw_fs_nir.cpp | 2 -- src/mesa/drivers/dri/i965/brw_fs_visitor.cpp | 37 +++++++++++----------------- 3 files changed, 14 insertions(+), 26 deletions(-) diff --git a/src/mesa/drivers/dri/i965/brw_fs.h b/src/mesa/drivers/dri/i965/brw_fs.h index 8b1ea79..86e85db 100644 --- a/src/mesa/drivers/dri/i965/brw_fs.h +++ b/src/mesa/drivers/dri/i965/brw_fs.h @@ -316,7 +316,6 @@ public: fs_reg sample_mask; fs_reg outputs[VARYING_SLOT_MAX]; fs_reg dual_src_output; - bool do_dual_src; int first_non_payload_grf; /** Either BRW_MAX_GRF or GEN7_MRF_HACK_START */ unsigned max_grf; diff --git a/src/mesa/drivers/dri/i965/brw_fs_nir.cpp b/src/mesa/drivers/dri/i965/brw_fs_nir.cpp index c278bd4..d01c4b0 100644 --- a/src/mesa/drivers/dri/i965/brw_fs_nir.cpp +++ b/src/mesa/drivers/dri/i965/brw_fs_nir.cpp @@ -103,12 +103,10 @@ fs_visitor::nir_setup_outputs() if (key->force_dual_color_blend && var->data.location == FRAG_RESULT_DATA1) { this->dual_src_output = reg; - this->do_dual_src = true; } else if (var->data.index > 0) { assert(var->data.location == FRAG_RESULT_DATA0); assert(var->data.index == 1); this->dual_src_output = reg; - this->do_dual_src = true; } else if (var->data.location == FRAG_RESULT_COLOR) { /* Writing gl_FragColor outputs to all color regions. */ for (unsigned int i = 0; i < MAX2(key->nr_color_regions, 1); i++) { diff --git a/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp b/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp index 4e0db06..cfb5bb6 100644 --- a/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp +++ b/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp @@ -469,33 +469,25 @@ fs_visitor::emit_fb_writes() "in SIMD16+ mode.\n"); } - if (do_dual_src) { - const fs_builder abld = bld.annotate("FB dual-source write"); + for (int target = 0; target < key->nr_color_regions; target++) { + /* Skip over outputs that weren't written. */ + if (this->outputs[target].file == BAD_FILE) + continue; - inst = emit_single_fb_write(abld, this->outputs[0], - this->dual_src_output, reg_undef, 4); - inst->target = 0; - - prog_data->dual_src_blend = true; - } else { - for (int target = 0; target < key->nr_color_regions; target++) { - /* Skip over outputs that weren't written. */ - if (this->outputs[target].file == BAD_FILE) - continue; + const fs_builder abld = bld.annotate( + ralloc_asprintf(this->mem_ctx, "FB write target %d", target)); - const fs_builder abld = bld.annotate( - ralloc_asprintf(this->mem_ctx, "FB write target %d", target)); + fs_reg src0_alpha; + if (devinfo->gen >= 6 && key->replicate_alpha && target != 0) + src0_alpha = offset(outputs[0], bld, 3); - fs_reg src0_alpha; - if (devinfo->gen >= 6 && key->replicate_alpha && target != 0) - src0_alpha = offset(outputs[0], bld, 3); - - inst = emit_single_fb_write(abld, this->outputs[target], reg_undef, - src0_alpha, 4); - inst->target = target; - } + inst = emit_single_fb_write(abld, this->outputs[target], + this->dual_src_output, src0_alpha, 4); + inst->target = target; } + prog_data->dual_src_blend = (this->dual_src_output.file != BAD_FILE); + if (inst == NULL) { /* Even if there's no color buffers enabled, we still need to send * alpha out the pipeline to our null renderbuffer to support @@ -946,7 +938,6 @@ fs_visitor::init() this->promoted_constants = 0, this->spilled_any_registers = false; - this->do_dual_src = false; } fs_visitor::~fs_visitor() -- 2.7.4