101 lines
3.1 KiB
C
101 lines
3.1 KiB
C
/*
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Copyright 2021 flyinghead
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This file is part of Flycast.
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Flycast is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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Flycast is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Flycast. If not, see <https://www.gnu.org/licenses/>.
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*/
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#pragma once
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// GLSL code for poly params handling, used by OpenGL and Vulkan per-pixel renderers
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#define OIT_POLY_PARAM " \n\
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struct Pixel { \n\
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uint color; \n\
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float depth; \n\
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uint seq_num; \n\
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uint next; \n\
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}; \n\
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#define EOL 0xFFFFFFFFu \n\
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\n\
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#define ZERO 0 \n\
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#define ONE 1 \n\
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#define OTHER_COLOR 2 \n\
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#define INVERSE_OTHER_COLOR 3 \n\
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#define SRC_ALPHA 4 \n\
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#define INVERSE_SRC_ALPHA 5 \n\
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#define DST_ALPHA 6 \n\
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#define INVERSE_DST_ALPHA 7 \n\
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\n\
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void setFragDepth(float z) \n\
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{ \n\
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#if DIV_POS_Z == 1 \n\
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float w = 100000.0 / z; \n\
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#else \n\
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float w = 100000.0 * z; \n\
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#endif \n\
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gl_FragDepth = log2(1.0 + w) / 34.0; \n\
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} \n\
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\n\
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struct PolyParam { \n\
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int tsp_isp_pcw; \n\
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int tsp1; \n\
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}; \n\
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\n\
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#define GET_TSP_FOR_AREA(pp, area1) ((area1) ? (pp).tsp1 : (pp).tsp_isp_pcw) \n\
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\n\
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#define getSrcBlendFunc(pp, area1) ((GET_TSP_FOR_AREA(pp, area1) >> 29) & 7) \n\
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\n\
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#define getDstBlendFunc(pp, area1) ((GET_TSP_FOR_AREA(pp, area1) >> 26) & 7) \n\
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\n\
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#define getSrcSelect(pp, area1) (((GET_TSP_FOR_AREA(pp, area1) >> 25) & 1) != 0) \n\
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\n\
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#define getDstSelect(pp, area1) (((GET_TSP_FOR_AREA(pp, area1) >> 24) & 1) != 0) \n\
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\n\
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#define getFogControl(pp, area1) ((GET_TSP_FOR_AREA(pp, area1) >> 22) & 3) \n\
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\n\
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#define getUseAlpha(pp, area1) (((GET_TSP_FOR_AREA(pp, area1) >> 20) & 1) != 0) \n\
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\n\
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#define getIgnoreTexAlpha(pp, area1) (((GET_TSP_FOR_AREA(pp, area1) >> 19) & 1) != 0) \n\
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\n\
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#define getShadingInstruction(pp, area1) ((GET_TSP_FOR_AREA(pp, area1) >> 6) & 3) \n\
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\n\
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#define getDepthFunc(pp) (((pp).tsp_isp_pcw >> 13) & 7) \n\
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\n\
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#define getDepthMask(pp) ((((pp).tsp_isp_pcw >> 10) & 1) != 1) \n\
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\n\
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#define getShadowEnable(pp) (((pp).tsp_isp_pcw & 1) != 0) \n\
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\n\
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#define getPolyNumber(pixel) (((pixel).seq_num & 0x3FFFFFFFu) >> 17) \n\
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\n\
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#define getPolyIndex(pixel) ((pixel).seq_num & 0x3FFFFFFFu) \n\
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\n\
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#define SHADOW_STENCIL 0x40000000u \n\
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#define SHADOW_ACC 0x80000000u \n\
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\n\
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#define isShadowed(pixel) (((pixel).seq_num & SHADOW_ACC) == SHADOW_ACC) \n\
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\n\
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#define isTwoVolumes(pp) ((pp).tsp1 != -1) \n\
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\n\
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uint packColors(vec4 v) \n\
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{ \n\
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return (uint(round(v.r * 255.0)) << 24) | (uint(round(v.g * 255.0)) << 16) | (uint(round(v.b * 255.0)) << 8) | uint(round(v.a * 255.0)); \n\
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} \n\
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\n\
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vec4 unpackColors(uint u) \n\
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{ \n\
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return vec4(float((u >> 24) & 255u) / 255.0, float((u >> 16) & 255u) / 255.0, float((u >> 8) & 255u) / 255.0, float(u & 255u) / 255.0); \n\
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} \n\
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"
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