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Henrik RydgårdandClaude Opus 5.5
3cd6bf9d27
The Tantalus games (Cars Race-O-Rama, MX vs ATV Reflex and Untamed, SpongeBob) turn depth into fog with a CLUT16 read of the swizzled depth mirror, stretched 2x into a 565 view of an 8888 buffer. A following 8888 copy writes the scene's RGB and keeps the alpha, so each pixel's fog factor is the upper 565 half. At a higher render scale, the depth X swizzle snapped every render pixel to its PSP pixel's left edge, so the fog came out in PSP-pixel blocks. It now keeps the position within the PSP pixel. That leaves the upper half sampling the right half of the depth texel, half a pixel off the scene, which drew magenta halos on the right of objects in Cars. With the new DepthCLUTIntoHalves compat flag, the depal pass outputs twice as wide so each render pixel reads its own 8888 pixel's depth. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
42 lines
1.2 KiB
C++
42 lines
1.2 KiB
C++
// Copyright (c) 2014- PPSSPP Project.
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// This program 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, version 2.0 or later versions.
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// This program 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 2.0 for more details.
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// A copy of the GPL 2.0 should have been included with the program.
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// If not, see http://www.gnu.org/licenses/
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// Official git repository and contact information can be found at
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// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
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#pragma once
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#include <cstdint>
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#include "Common/GPU/Shader.h"
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#include "GPU/ge_constants.h"
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class ShaderWriter;
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static const int DEPAL_TEXTURE_OLD_AGE = 120;
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struct DepalConfig {
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u32 startPos;
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u8 mask;
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u8 shift;
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bool smoothedDepal;
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u8 depthUpperBits;
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bool depthIntoHalves;
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GEPaletteFormat clutFormat;
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GETextureFormat textureFormat;
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GEBufferFormat bufferFormat;
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};
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void GenerateDepalFs(ShaderWriter &writer, const DepalConfig &config);
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