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https://bitbucket.org/CPMADevs/cnq3
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58 lines
1.8 KiB
HLSL
58 lines
1.8 KiB
HLSL
/*
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===========================================================================
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Copyright (C) 2023-2024 Gian 'myT' Schellenbaum
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This file is part of Challenge Quake 3 (CNQ3).
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Challenge Quake 3 is free software; you can redistribute it
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and/or modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the License,
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or (at your option) any later version.
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Challenge Quake 3 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 Challenge Quake 3. If not, see <https://www.gnu.org/licenses/>.
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===========================================================================
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*/
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// shared structures and constants used to implement order-independent transparency
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#pragma once
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#if defined(__cplusplus)
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#pragma pack(push, 4)
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typedef uint32_t uint;
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#endif
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#define OIT_MAX_FRAGMENTS_PER_PIXEL 32
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#define OIT_AVG_FRAGMENTS_PER_PIXEL 16
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struct OIT_Counter
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{
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uint fragmentCount;
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uint maxFragmentCount;
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uint overflowCount;
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};
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struct OIT_Fragment
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{
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uint color;
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float depth; // higher is further away from the camera
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uint stateBits; // GLS_* stage bits + stage index
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uint next;
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uint shaderTrace; // shader index: 14 - enable: 1
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uint depthFadeDistOffset; // offset: fp16 - distance: fp16
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uint depthFadeScaleBiasPO; // polygon offset: 1 - enable: 1 - color bias: 4 - color scale: 4
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// @TODO: move the 10 bits from depthFadeScaleBiasPO into shaderTrace
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};
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#if defined(__cplusplus)
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#pragma pack(pop)
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static_assert(sizeof(OIT_Counter) == 12, "sizeof(OIT_Counter) is wrong");
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static_assert(sizeof(OIT_Fragment) == 28, "sizeof(OIT_Fragment) is wrong");
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#endif
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