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4fedf6bedd
Add support for advanced blending (VK_EXT_blend_operation_advanced and GL_KHR_blend_equation_advanced), enabling around 40 advanced blend modes including multiply, screen, overlay, HSL modes (hue, saturation, color, luminosity), Porter-Duff modes, and extended modes like lineardodge and vividlight. Advanced blending slots into the existing blending logic alongside logic operations and standard blending. The implementation supports both premultiplied and non-premultiplied alpha for source and destination, and provides three overlap modes (uncorrelated, conjoint, disjoint). Signed-off-by: Christian Gmeiner <cgmeiner@igalia.com> Acked-by: Alyssa Rosenzweig <alyssa.rosenzweig@intel.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/38929>
83 lines
2.6 KiB
C
83 lines
2.6 KiB
C
/*
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* Copyright © 2019 Alyssa Rosenzweig
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*
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*/
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#ifndef NIR_BLEND_H
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#define NIR_BLEND_H
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#include "compiler/nir/nir_defines.h"
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#include "util/blend.h"
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#include "util/format/u_formats.h"
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/* These structs encapsulates the blend state such that it can be lowered
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* cleanly
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*/
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typedef struct {
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enum pipe_blend_func func;
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enum pipe_blendfactor src_factor;
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enum pipe_blendfactor dst_factor;
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} nir_lower_blend_channel;
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typedef struct {
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enum pipe_format format;
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nir_lower_blend_channel rgb;
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nir_lower_blend_channel alpha;
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/* 4-bit colormask. 0x0 for none, 0xF for RGBA, 0x1 for R */
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unsigned colormask:4;
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unsigned advanced_blend:1;
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enum pipe_advanced_blend_mode blend_mode;
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bool src_premultiplied;
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bool dst_premultiplied;
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enum pipe_blend_overlap_mode overlap;
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} nir_lower_blend_rt;
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typedef struct {
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nir_lower_blend_rt rt[8];
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bool logicop_enable;
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enum pipe_logicop logicop_func;
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/* If set, will use load_blend_const_color_{r,g,b,a}_float instead of
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* load_blend_const_color_rgba */
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bool scalar_blend_const;
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} nir_lower_blend_options;
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nir_def *
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nir_color_logicop(nir_builder *b, nir_def *src, nir_def *dst,
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enum pipe_logicop func, enum pipe_format format);
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nir_def *
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nir_color_blend(nir_builder *b, nir_def *src0, nir_def *src1, nir_def *dst,
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const nir_lower_blend_rt *rt, bool scalar_blend_const);
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nir_def *
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nir_color_mask(nir_builder *b, nir_def *src, nir_def *dst, unsigned mask);
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bool nir_lower_blend(nir_shader *shader,
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const nir_lower_blend_options *options);
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#endif
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