Mesa (main): panfrost: Use common blend lowering
GitLab Mirror
gitlab-mirror at kemper.freedesktop.org
Fri May 7 17:49:24 UTC 2021
Module: Mesa
Branch: main
Commit: e0419c29cc3cfb7321f9e7b7f38ea8f842f94c13
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=e0419c29cc3cfb7321f9e7b7f38ea8f842f94c13
Author: Alyssa Rosenzweig <alyssa at collabora.com>
Date: Fri Apr 23 09:42:02 2021 -0400
panfrost: Use common blend lowering
Contains a number of bugfixes.
Signed-off-by: Alyssa Rosenzweig <alyssa at collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10601>
---
.../panfrost/ci/deqp-panfrost-g52-fails.txt | 24 --
src/panfrost/Makefile.sources | 2 -
src/panfrost/lib/pan_blend.c | 31 +-
src/panfrost/util/meson.build | 1 -
src/panfrost/util/nir_lower_blend.c | 375 ---------------------
src/panfrost/util/nir_lower_blend.h | 65 ----
6 files changed, 15 insertions(+), 483 deletions(-)
diff --git a/src/gallium/drivers/panfrost/ci/deqp-panfrost-g52-fails.txt b/src/gallium/drivers/panfrost/ci/deqp-panfrost-g52-fails.txt
index 03801b33ca0..c1eef27fcfa 100644
--- a/src/gallium/drivers/panfrost/ci/deqp-panfrost-g52-fails.txt
+++ b/src/gallium/drivers/panfrost/ci/deqp-panfrost-g52-fails.txt
@@ -1,42 +1,18 @@
dEQP-GLES31.functional.draw_base_vertex.draw_elements_base_vertex.builtin_variable.vertex_id,Fail
dEQP-GLES31.functional.draw_base_vertex.draw_elements_instanced_base_vertex.builtin_variable.vertex_id,Fail
dEQP-GLES31.functional.draw_base_vertex.draw_range_elements_base_vertex.builtin_variable.vertex_id,Fail
-dEQP-GLES31.functional.draw_buffers_indexed.random.max_implementation_draw_buffers.0,Fail
dEQP-GLES31.functional.draw_buffers_indexed.random.max_implementation_draw_buffers.10,Fail
dEQP-GLES31.functional.draw_buffers_indexed.random.max_implementation_draw_buffers.11,Fail
-dEQP-GLES31.functional.draw_buffers_indexed.random.max_implementation_draw_buffers.12,Fail
dEQP-GLES31.functional.draw_buffers_indexed.random.max_implementation_draw_buffers.13,Fail
dEQP-GLES31.functional.draw_buffers_indexed.random.max_implementation_draw_buffers.14,Fail
dEQP-GLES31.functional.draw_buffers_indexed.random.max_implementation_draw_buffers.15,Fail
-dEQP-GLES31.functional.draw_buffers_indexed.random.max_implementation_draw_buffers.16,Fail
dEQP-GLES31.functional.draw_buffers_indexed.random.max_implementation_draw_buffers.17,Fail
dEQP-GLES31.functional.draw_buffers_indexed.random.max_implementation_draw_buffers.18,Fail
-dEQP-GLES31.functional.draw_buffers_indexed.random.max_implementation_draw_buffers.19,Fail
dEQP-GLES31.functional.draw_buffers_indexed.random.max_implementation_draw_buffers.1,Fail
dEQP-GLES31.functional.draw_buffers_indexed.random.max_implementation_draw_buffers.2,Fail
-dEQP-GLES31.functional.draw_buffers_indexed.random.max_implementation_draw_buffers.3,Fail
-dEQP-GLES31.functional.draw_buffers_indexed.random.max_implementation_draw_buffers.4,Fail
dEQP-GLES31.functional.draw_buffers_indexed.random.max_implementation_draw_buffers.5,Fail
-dEQP-GLES31.functional.draw_buffers_indexed.random.max_implementation_draw_buffers.6,Fail
-dEQP-GLES31.functional.draw_buffers_indexed.random.max_implementation_draw_buffers.7,Fail
-dEQP-GLES31.functional.draw_buffers_indexed.random.max_implementation_draw_buffers.8,Fail
dEQP-GLES31.functional.draw_buffers_indexed.random.max_implementation_draw_buffers.9,Fail
-dEQP-GLES31.functional.draw_buffers_indexed.random.max_required_draw_buffers.0,Fail
dEQP-GLES31.functional.draw_buffers_indexed.random.max_required_draw_buffers.10,Fail
-dEQP-GLES31.functional.draw_buffers_indexed.random.max_required_draw_buffers.11,Fail
-dEQP-GLES31.functional.draw_buffers_indexed.random.max_required_draw_buffers.12,Fail
-dEQP-GLES31.functional.draw_buffers_indexed.random.max_required_draw_buffers.13,Fail
-dEQP-GLES31.functional.draw_buffers_indexed.random.max_required_draw_buffers.14,Fail
-dEQP-GLES31.functional.draw_buffers_indexed.random.max_required_draw_buffers.15,Fail
-dEQP-GLES31.functional.draw_buffers_indexed.random.max_required_draw_buffers.16,Fail
-dEQP-GLES31.functional.draw_buffers_indexed.random.max_required_draw_buffers.18,Fail
-dEQP-GLES31.functional.draw_buffers_indexed.random.max_required_draw_buffers.19,Fail
-dEQP-GLES31.functional.draw_buffers_indexed.random.max_required_draw_buffers.1,Fail
-dEQP-GLES31.functional.draw_buffers_indexed.random.max_required_draw_buffers.3,Fail
-dEQP-GLES31.functional.draw_buffers_indexed.random.max_required_draw_buffers.4,Fail
-dEQP-GLES31.functional.draw_buffers_indexed.random.max_required_draw_buffers.6,Fail
-dEQP-GLES31.functional.draw_buffers_indexed.random.max_required_draw_buffers.8,Fail
-dEQP-GLES31.functional.draw_buffers_indexed.random.max_required_draw_buffers.9,Fail
dEQP-GLES31.functional.draw_indirect.draw_elements_indirect.line_strip.instanced_attributes,Fail
dEQP-GLES31.functional.draw_indirect.random.31,Fail
dEQP-GLES31.functional.layout_binding.image.image2d.vertex_binding_array,Fail
diff --git a/src/panfrost/Makefile.sources b/src/panfrost/Makefile.sources
index b5262e0bfb6..f0fdc59f632 100644
--- a/src/panfrost/Makefile.sources
+++ b/src/panfrost/Makefile.sources
@@ -110,8 +110,6 @@ shared_FILES := \
util_FILES := \
util/lcra.c \
util/lcra.h \
- util/nir_lower_blend.c \
- util/nir_lower_blend.h \
util/nir_mod_helpers.c \
util/pan_ir.c \
util/pan_ir.h \
diff --git a/src/panfrost/lib/pan_blend.c b/src/panfrost/lib/pan_blend.c
index 9c7877ec5de..78a93b19d83 100644
--- a/src/panfrost/lib/pan_blend.c
+++ b/src/panfrost/lib/pan_blend.c
@@ -26,11 +26,11 @@
#include "pan_shader.h"
#include "pan_texture.h"
#include "panfrost/util/pan_lower_framebuffer.h"
-#include "panfrost/util/nir_lower_blend.h"
#include "util/format/u_format.h"
#include "compiler/nir/nir.h"
#include "compiler/nir/nir_builder.h"
#include "compiler/nir/nir_conversion_builder.h"
+#include "compiler/nir/nir_lower_blend.h"
/* Fixed function blending */
@@ -504,9 +504,8 @@ pan_blend_create_shader(const struct panfrost_device *dev,
nir_lower_blend_options options = {
.logicop_enable = state->logicop_enable,
.logicop_func = state->logicop_func,
- .colormask = rt_state->equation.color_mask,
- .half = nir_type == nir_type_float16,
- .format = rt_state->format
+ .rt[0].colormask = rt_state->equation.color_mask,
+ .format[0] = rt_state->format
};
if (!rt_state->equation.blend_enable) {
@@ -518,19 +517,19 @@ pan_blend_create_shader(const struct panfrost_device *dev,
.invert_dst_factor = false,
};
- options.rgb = replace;
- options.alpha = replace;
+ options.rt[0].rgb = replace;
+ options.rt[0].alpha = replace;
} else {
- options.rgb.func = rt_state->equation.rgb_func;
- options.rgb.src_factor = rt_state->equation.rgb_src_factor;
- options.rgb.invert_src_factor = rt_state->equation.rgb_invert_src_factor;
- options.rgb.dst_factor = rt_state->equation.rgb_dst_factor;
- options.rgb.invert_dst_factor = rt_state->equation.rgb_invert_dst_factor;
- options.alpha.func = rt_state->equation.alpha_func;
- options.alpha.src_factor = rt_state->equation.alpha_src_factor;
- options.alpha.invert_src_factor = rt_state->equation.alpha_invert_src_factor;
- options.alpha.dst_factor = rt_state->equation.alpha_dst_factor;
- options.alpha.invert_dst_factor = rt_state->equation.alpha_invert_dst_factor;
+ options.rt[0].rgb.func = rt_state->equation.rgb_func;
+ options.rt[0].rgb.src_factor = rt_state->equation.rgb_src_factor;
+ options.rt[0].rgb.invert_src_factor = rt_state->equation.rgb_invert_src_factor;
+ options.rt[0].rgb.dst_factor = rt_state->equation.rgb_dst_factor;
+ options.rt[0].rgb.invert_dst_factor = rt_state->equation.rgb_invert_dst_factor;
+ options.rt[0].alpha.func = rt_state->equation.alpha_func;
+ options.rt[0].alpha.src_factor = rt_state->equation.alpha_src_factor;
+ options.rt[0].alpha.invert_src_factor = rt_state->equation.alpha_invert_src_factor;
+ options.rt[0].alpha.dst_factor = rt_state->equation.alpha_dst_factor;
+ options.rt[0].alpha.invert_dst_factor = rt_state->equation.alpha_invert_dst_factor;
}
nir_alu_type src_types[] = { src0_type ?: nir_type_float32, src1_type ?: nir_type_float32 };
diff --git a/src/panfrost/util/meson.build b/src/panfrost/util/meson.build
index 23110d7f268..75f9024eafb 100644
--- a/src/panfrost/util/meson.build
+++ b/src/panfrost/util/meson.build
@@ -22,7 +22,6 @@
libpanfrost_util_files = files(
'lcra.c',
'lcra.h',
- 'nir_lower_blend.c',
'nir_mod_helpers.c',
'pan_ir.c',
'pan_ir.h',
diff --git a/src/panfrost/util/nir_lower_blend.c b/src/panfrost/util/nir_lower_blend.c
deleted file mode 100644
index 0ee4d053dd8..00000000000
--- a/src/panfrost/util/nir_lower_blend.c
+++ /dev/null
@@ -1,375 +0,0 @@
-/*
- * Copyright (C) 2019 Alyssa Rosenzweig
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice (including the next
- * paragraph) shall be included in all copies or substantial portions of the
- * Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
- * IN THE SOFTWARE.
- */
-
-/**
- * @file
- *
- * Implements the fragment pipeline (blending and writeout) in software, to be
- * run as a dedicated "blend shader" stage on Midgard/Bifrost, or as a fragment
- * shader variant on typical GPUs. This pass is useful if hardware lacks
- * fixed-function blending in part or in full.
- */
-
-#include "compiler/nir/nir.h"
-#include "compiler/nir/nir_builder.h"
-#include "compiler/nir/nir_format_convert.h"
-#include "nir_lower_blend.h"
-
-/* Given processed factors, combine them per a blend function */
-
-static nir_ssa_def *
-nir_blend_func(
- nir_builder *b,
- enum blend_func func,
- nir_ssa_def *src, nir_ssa_def *dst)
-{
- switch (func) {
- case BLEND_FUNC_ADD:
- return nir_fadd(b, src, dst);
- case BLEND_FUNC_SUBTRACT:
- return nir_fsub(b, src, dst);
- case BLEND_FUNC_REVERSE_SUBTRACT:
- return nir_fsub(b, dst, src);
- case BLEND_FUNC_MIN:
- return nir_fmin(b, src, dst);
- case BLEND_FUNC_MAX:
- return nir_fmax(b, src, dst);
- }
-
- unreachable("Invalid blend function");
-}
-
-/* Does this blend function multiply by a blend factor? */
-
-static bool
-nir_blend_factored(enum blend_func func)
-{
- switch (func) {
- case BLEND_FUNC_ADD:
- case BLEND_FUNC_SUBTRACT:
- case BLEND_FUNC_REVERSE_SUBTRACT:
- return true;
- default:
- return false;
- }
-}
-
-/* Compute a src_alpha_saturate factor */
-static nir_ssa_def *
-nir_alpha_saturate(
- nir_builder *b,
- nir_ssa_def *src, nir_ssa_def *dst,
- unsigned chan)
-{
- nir_ssa_def *Asrc = nir_channel(b, src, 3);
- nir_ssa_def *Adst = nir_channel(b, dst, 3);
- nir_ssa_def *one = nir_imm_floatN_t(b, 1.0, src->bit_size);
- nir_ssa_def *Adsti = nir_fsub(b, one, Adst);
-
- return (chan < 3) ? nir_fmin(b, Asrc, Adsti) : one;
-}
-
-/* Returns a scalar single factor, unmultiplied */
-
-static nir_ssa_def *
-nir_blend_factor_value(
- nir_builder *b,
- nir_ssa_def *src, nir_ssa_def *src1, nir_ssa_def *dst, nir_ssa_def *bconst,
- unsigned chan,
- enum blend_factor factor)
-{
- switch (factor) {
- case BLEND_FACTOR_ZERO:
- return nir_imm_floatN_t(b, 0.0, src->bit_size);
- case BLEND_FACTOR_SRC_COLOR:
- return nir_channel(b, src, chan);
- case BLEND_FACTOR_SRC1_COLOR:
- return nir_channel(b, src1, chan);
- case BLEND_FACTOR_DST_COLOR:
- return nir_channel(b, dst, chan);
- case BLEND_FACTOR_SRC_ALPHA:
- return nir_channel(b, src, 3);
- case BLEND_FACTOR_SRC1_ALPHA:
- return nir_channel(b, src1, 3);
- case BLEND_FACTOR_DST_ALPHA:
- return nir_channel(b, dst, 3);
- case BLEND_FACTOR_CONSTANT_COLOR:
- return nir_channel(b, bconst, chan);
- case BLEND_FACTOR_CONSTANT_ALPHA:
- return nir_channel(b, bconst, 3);
- case BLEND_FACTOR_SRC_ALPHA_SATURATE:
- return nir_alpha_saturate(b, src, dst, chan);
- }
-
- unreachable("Invalid blend factor");
-}
-
-static nir_ssa_def *
-nir_blend_factor(
- nir_builder *b,
- nir_ssa_def *raw_scalar,
- nir_ssa_def *src, nir_ssa_def *src1, nir_ssa_def *dst, nir_ssa_def *bconst,
- unsigned chan,
- enum blend_factor factor,
- bool inverted)
-{
- nir_ssa_def *f =
- nir_blend_factor_value(b, src, src1, dst, bconst, chan, factor);
-
- if (inverted)
- f = nir_fadd_imm(b, nir_fneg(b, f), 1.0);
-
- return nir_fmul(b, raw_scalar, f);
-}
-
-/* Given a colormask, "blend" with the destination */
-
-static nir_ssa_def *
-nir_color_mask(
- nir_builder *b,
- unsigned mask,
- nir_ssa_def *src,
- nir_ssa_def *dst)
-{
- nir_ssa_def *masked[4];
-
- for (unsigned c = 0; c < 4; ++c) {
- bool enab = (mask & (1 << c));
- masked[c] = enab ? nir_channel(b, src, c) : nir_channel(b, dst, c);
- }
-
- return nir_vec(b, masked, 4);
-}
-
-static nir_ssa_def *
-nir_logicop_func(
- nir_builder *b,
- unsigned func,
- nir_ssa_def *src, nir_ssa_def *dst)
-{
- switch (func) {
- case PIPE_LOGICOP_CLEAR:
- return nir_imm_ivec4(b, 0, 0, 0, 0);
- case PIPE_LOGICOP_NOR:
- return nir_inot(b, nir_ior(b, src, dst));
- case PIPE_LOGICOP_AND_INVERTED:
- return nir_iand(b, nir_inot(b, src), dst);
- case PIPE_LOGICOP_COPY_INVERTED:
- return nir_inot(b, src);
- case PIPE_LOGICOP_AND_REVERSE:
- return nir_iand(b, src, nir_inot(b, dst));
- case PIPE_LOGICOP_INVERT:
- return nir_inot(b, dst);
- case PIPE_LOGICOP_XOR:
- return nir_ixor(b, src, dst);
- case PIPE_LOGICOP_NAND:
- return nir_inot(b, nir_iand(b, src, dst));
- case PIPE_LOGICOP_AND:
- return nir_iand(b, src, dst);
- case PIPE_LOGICOP_EQUIV:
- return nir_inot(b, nir_ixor(b, src, dst));
- case PIPE_LOGICOP_NOOP:
- return dst;
- case PIPE_LOGICOP_OR_INVERTED:
- return nir_ior(b, nir_inot(b, src), dst);
- case PIPE_LOGICOP_COPY:
- return src;
- case PIPE_LOGICOP_OR_REVERSE:
- return nir_ior(b, src, nir_inot(b, dst));
- case PIPE_LOGICOP_OR:
- return nir_ior(b, src, dst);
- case PIPE_LOGICOP_SET:
- return nir_imm_ivec4(b, ~0, ~0, ~0, ~0);
- }
-
- unreachable("Invalid logciop function");
-}
-
-static nir_ssa_def *
-nir_blend_logicop(
- nir_builder *b,
- nir_lower_blend_options options,
- nir_ssa_def *src, nir_ssa_def *dst)
-{
- const struct util_format_description *format_desc =
- util_format_description(options.format);
-
- if (options.half) {
- src = nir_f2f32(b, src);
- dst = nir_f2f32(b, dst);
- }
-
- assert(src->num_components <= 4);
- assert(dst->num_components <= 4);
-
- unsigned bits[4];
- for (int i = 0; i < 4; ++i)
- bits[i] = format_desc->channel[i].size;
-
- src = nir_format_float_to_unorm(b, src, bits);
- dst = nir_format_float_to_unorm(b, dst, bits);
-
- nir_ssa_def *out = nir_logicop_func(b, options.logicop_func, src, dst);
-
- if (bits[0] < 32) {
- nir_const_value mask[4];
- for (int i = 0; i < 4; ++i)
- mask[i] = nir_const_value_for_int((1u << bits[i]) - 1, 32);
-
- out = nir_iand(b, out, nir_build_imm(b, 4, 32, mask));
- }
-
- out = nir_format_unorm_to_float(b, out, bits);
-
- if (options.half)
- out = nir_f2f16(b, out);
-
- return out;
-}
-
-/* Given a blend state, the source color, and the destination color,
- * return the blended color
- */
-
-static nir_ssa_def *
-nir_blend(
- nir_builder *b,
- nir_lower_blend_options options,
- nir_ssa_def *src, nir_ssa_def *src1, nir_ssa_def *dst)
-{
- if (options.logicop_enable)
- return nir_blend_logicop(b, options, src, dst);
-
- /* Grab the blend constant ahead of time */
- nir_ssa_def *bconst;
- if (options.scalar) {
- bconst = nir_vec4(b,
- nir_load_blend_const_color_r_float(b),
- nir_load_blend_const_color_g_float(b),
- nir_load_blend_const_color_b_float(b),
- nir_load_blend_const_color_a_float(b));
- } else {
- bconst = nir_load_blend_const_color_rgba(b);
- }
-
- if (options.half)
- bconst = nir_f2f16(b, bconst);
-
- /* We blend per channel and recombine later */
- nir_ssa_def *channels[4];
-
- for (unsigned c = 0; c < 4; ++c) {
- /* Decide properties based on channel */
- nir_lower_blend_channel chan =
- (c < 3) ? options.rgb : options.alpha;
-
- nir_ssa_def *psrc = nir_channel(b, src, c);
- nir_ssa_def *pdst = nir_channel(b, dst, c);
-
- if (nir_blend_factored(chan.func)) {
- psrc = nir_blend_factor(
- b, psrc,
- src, src1, dst, bconst, c,
- chan.src_factor, chan.invert_src_factor);
-
- pdst = nir_blend_factor(
- b, pdst,
- src, src1, dst, bconst, c,
- chan.dst_factor, chan.invert_dst_factor);
- }
-
- channels[c] = nir_blend_func(b, chan.func, psrc, pdst);
- }
-
- /* Then just recombine with an applied colormask */
- nir_ssa_def *blended = nir_vec(b, channels, 4);
- return nir_color_mask(b, options.colormask, blended, dst);
-}
-
-static bool
-nir_is_blend_channel_replace(nir_lower_blend_channel chan)
-{
- return
- (chan.src_factor == BLEND_FACTOR_ZERO) &&
- (chan.dst_factor == BLEND_FACTOR_ZERO) &&
- (chan.invert_src_factor && !chan.invert_dst_factor) &&
- (chan.func == BLEND_FUNC_ADD || chan.func == BLEND_FUNC_SUBTRACT || chan.func == BLEND_FUNC_MAX);
-}
-
-static bool
-nir_is_blend_replace(nir_lower_blend_options options)
-{
- return
- nir_is_blend_channel_replace(options.rgb) &&
- nir_is_blend_channel_replace(options.alpha);
-}
-
-static bool
-nir_lower_blend_instr(nir_builder *b, nir_instr *instr, void *data)
-{
- nir_lower_blend_options *options = data;
- if (instr->type != nir_instr_type_intrinsic)
- return false;
-
- nir_intrinsic_instr *intr = nir_instr_as_intrinsic(instr);
- if (intr->intrinsic != nir_intrinsic_store_deref)
- return false;
-
- /* TODO: Extending to MRT */
- nir_variable *var = nir_intrinsic_get_var(intr, 0);
- if (var->data.location != FRAG_RESULT_COLOR &&
- var->data.location < FRAG_RESULT_DATA0)
- return false;
-
- b->cursor = nir_before_instr(instr);
-
- /* Grab the input color */
- nir_ssa_def *src = nir_ssa_for_src(b, intr->src[1], 4);
-
- /* Grab the dual-source input color */
- nir_ssa_def *src1 = options->src1;
-
- /* Grab the tilebuffer color - io lowered to load_output */
- nir_ssa_def *dst = nir_load_var(b, var);
-
- /* Blend the two colors per the passed options */
- nir_ssa_def *blended = nir_blend(b, *options, src, src1, dst);
-
- /* Write out the final color instead of the input */
- nir_instr_rewrite_src_ssa(instr, &intr->src[1], blended);
- return true;
-}
-
-void
-nir_lower_blend(nir_shader *shader, nir_lower_blend_options options)
-{
- assert(shader->info.stage == MESA_SHADER_FRAGMENT);
-
- /* Only run for actual blending, since there's nothing to do and we don't
- * want to degrade intermediate precision for non-blendable R32F targets) */
-
- if (!nir_is_blend_replace(options)) {
- nir_shader_instructions_pass(shader, nir_lower_blend_instr,
- nir_metadata_block_index | nir_metadata_dominance, &options);
- }
-}
diff --git a/src/panfrost/util/nir_lower_blend.h b/src/panfrost/util/nir_lower_blend.h
deleted file mode 100644
index 4b788c970b4..00000000000
--- a/src/panfrost/util/nir_lower_blend.h
+++ /dev/null
@@ -1,65 +0,0 @@
-/*
- * Copyright  2019 Alyssa Rosenzweig
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice (including the next
- * paragraph) shall be included in all copies or substantial portions of the
- * Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
- * IN THE SOFTWARE.
- *
- */
-
-#ifndef NIR_BLEND_H
-#define NIR_BLEND_H
-
-#include "compiler/nir/nir.h"
-#include "pipe/p_format.h"
-
-/* These structs encapsulates the blend state such that it can be lowered
- * cleanly
- */
-
-typedef struct {
- enum blend_func func;
-
- enum blend_factor src_factor;
- bool invert_src_factor;
-
- enum blend_factor dst_factor;
- bool invert_dst_factor;
-} nir_lower_blend_channel;
-
-typedef struct {
- nir_lower_blend_channel rgb;
- nir_lower_blend_channel alpha;
-
- /* 4-bit colormask. 0x0 for none, 0xF for RGBA, 0x1 for R */
- unsigned colormask;
-
- bool logicop_enable;
- unsigned logicop_func;
- enum pipe_format format;
-
- /* Use fp16 instead of fp32 */
- bool half;
-
- bool scalar;
- nir_ssa_def *src1;
-} nir_lower_blend_options;
-
-void nir_lower_blend(nir_shader *shader, nir_lower_blend_options options);
-
-#endif
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