mirror of
https://github.com/melonDS-emu/melonDS.git
synced 2025-07-27 00:00:07 -06:00
Compute shader renderer (#2041)
* nothing works yet * don't double buffer 3D framebuffers for the GL Renderer looks like leftovers from when 3D+2D composition was done in the frontend * oops * it works! * implement display capture for compute renderer it's actually just all stolen from the regular OpenGL renderer * fix bad indirect call * handle cleanup properly * add hires rendering to the compute shader renderer * fix UB also misc changes to use more unsigned multiplication also fix framebuffer resize * correct edge filling behaviour when AA is disabled * fix full color textures * fix edge marking (polygon id is 6-bit not 5) also make the code a bit nicer * take all edge cases into account for XMin/XMax calculation * use hires coordinate again * stop using fixed size buffers based on scale factor in shaders this makes shader compile times tolerable on Wintel - beginning of the shader cache - increase size of tile idx in workdesc to 20 bits * apparently & is not defined on bvec4 why does this even compile on Intel and Nvidia? * put the texture cache into it's own file * add compute shader renderer properly to the GUI also add option to toggle using high resolution vertex coordinates * unbind sampler object in compute shader renderer * fix GetRangedBitMask for 64 bit aligned 64 bits pretty embarassing * convert NonStupidBitfield.h back to LF only new lines * actually adapt to latest changes * fix stupid merge * actually make compute shader renderer work with newest changes * show progress on shader compilation * remove merge leftover
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src/GPU3D_Compute.h
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src/GPU3D_Compute.h
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/*
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Copyright 2016-2022 melonDS team
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This file is part of melonDS.
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melonDS is free software: you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation, either version 3 of the License, or (at your option)
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any later version.
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melonDS is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with melonDS. If not, see http://www.gnu.org/licenses/.
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*/
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#ifndef GPU3D_COMPUTE
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#define GPU3D_COMPUTE
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#include <memory>
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#include "types.h"
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#include "GPU3D.h"
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#include "OpenGLSupport.h"
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#include "GPU_OpenGL.h"
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#include "GPU3D_TexcacheOpenGL.h"
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#include "NonStupidBitfield.h"
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namespace melonDS
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{
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class ComputeRenderer : public Renderer3D
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{
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public:
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static std::unique_ptr<ComputeRenderer> New();
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~ComputeRenderer() override;
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void Reset(GPU& gpu) override;
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void SetRenderSettings(int scale, bool highResolutionCoordinates);
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void VCount144(GPU& gpu) override;
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void RenderFrame(GPU& gpu) override;
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void RestartFrame(GPU& gpu) override;
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u32* GetLine(int line) override;
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void SetupAccelFrame() override;
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void PrepareCaptureFrame() override;
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void BindOutputTexture(int buffer) override;
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void Blit(const GPU& gpu) override;
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void Stop(const GPU& gpu) override;
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bool NeedsShaderCompile() { return ShaderStepIdx != 33; }
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void ShaderCompileStep(int& current, int& count) override;
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private:
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ComputeRenderer(GLCompositor&& compositor);
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GLuint ShaderInterpXSpans[2];
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GLuint ShaderBinCombined;
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GLuint ShaderDepthBlend[2];
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GLuint ShaderRasteriseNoTexture[2];
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GLuint ShaderRasteriseNoTextureToon[2];
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GLuint ShaderRasteriseNoTextureHighlight[2];
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GLuint ShaderRasteriseUseTextureDecal[2];
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GLuint ShaderRasteriseUseTextureModulate[2];
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GLuint ShaderRasteriseUseTextureToon[2];
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GLuint ShaderRasteriseUseTextureHighlight[2];
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GLuint ShaderRasteriseShadowMask[2];
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GLuint ShaderClearCoarseBinMask;
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GLuint ShaderClearIndirectWorkCount;
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GLuint ShaderCalculateWorkListOffset;
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GLuint ShaderSortWork;
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GLuint ShaderFinalPass[8];
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GLuint YSpanIndicesTextureMemory;
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GLuint YSpanIndicesTexture;
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GLuint YSpanSetupMemory;
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GLuint XSpanSetupMemory;
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GLuint BinResultMemory;
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GLuint RenderPolygonMemory;
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GLuint WorkDescMemory;
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enum
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{
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tilememoryLayer_Color,
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tilememoryLayer_Depth,
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tilememoryLayer_Attr,
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tilememoryLayer_Num,
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};
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GLuint TileMemory[tilememoryLayer_Num];
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GLuint FinalTileMemory;
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u32 DummyLine[256] = {};
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struct SpanSetupY
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{
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// Attributes
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s32 Z0, Z1, W0, W1;
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s32 ColorR0, ColorG0, ColorB0;
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s32 ColorR1, ColorG1, ColorB1;
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s32 TexcoordU0, TexcoordV0;
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s32 TexcoordU1, TexcoordV1;
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// Interpolator
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s32 I0, I1;
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s32 Linear;
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s32 IRecip;
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s32 W0n, W0d, W1d;
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// Slope
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s32 Increment;
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s32 X0, X1, Y0, Y1;
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s32 XMin, XMax;
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s32 DxInitial;
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s32 XCovIncr;
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u32 IsDummy;
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};
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struct SpanSetupX
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{
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s32 X0, X1;
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s32 EdgeLenL, EdgeLenR, EdgeCovL, EdgeCovR;
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s32 XRecip;
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u32 Flags;
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s32 Z0, Z1, W0, W1;
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s32 ColorR0, ColorG0, ColorB0;
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s32 ColorR1, ColorG1, ColorB1;
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s32 TexcoordU0, TexcoordV0;
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s32 TexcoordU1, TexcoordV1;
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s32 CovLInitial, CovRInitial;
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};
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struct SetupIndices
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{
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u16 PolyIdx, SpanIdxL, SpanIdxR, Y;
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};
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struct RenderPolygon
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{
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u32 FirstXSpan;
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s32 YTop, YBot;
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s32 XMin, XMax;
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s32 XMinY, XMaxY;
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u32 Variant;
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u32 Attr;
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float TextureLayer;
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};
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static constexpr int TileSize = 8;
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static constexpr int CoarseTileCountX = 8;
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static constexpr int CoarseTileCountY = 4;
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static constexpr int CoarseTileW = CoarseTileCountX * TileSize;
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static constexpr int CoarseTileH = CoarseTileCountY * TileSize;
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static constexpr int BinStride = 2048/32;
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static constexpr int CoarseBinStride = BinStride/32;
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static constexpr int MaxVariants = 256;
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static constexpr int UniformIdxCurVariant = 0;
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static constexpr int UniformIdxTextureSize = 1;
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static constexpr int MaxFullscreenLayers = 16;
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struct BinResultHeader
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{
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u32 VariantWorkCount[MaxVariants*4];
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u32 SortedWorkOffset[MaxVariants];
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u32 SortWorkWorkCount[4];
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};
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static const int MaxYSpanSetups = 6144*2;
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std::vector<SetupIndices> YSpanIndices;
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SpanSetupY YSpanSetups[MaxYSpanSetups];
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RenderPolygon RenderPolygons[2048];
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TexcacheOpenGL Texcache;
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struct MetaUniform
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{
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u32 NumPolygons;
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u32 NumVariants;
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u32 AlphaRef;
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u32 DispCnt;
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u32 ToonTable[4*34];
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u32 ClearColor, ClearDepth, ClearAttr;
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u32 FogOffset, FogShift, FogColor;
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};
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GLuint MetaUniformMemory;
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GLuint Samplers[9];
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GLuint Framebuffer = 0;
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GLuint LowResFramebuffer;
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GLuint PixelBuffer;
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u32 FramebufferCPU[256*192];
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int ScreenWidth, ScreenHeight;
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int TilesPerLine, TileLines;
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int ScaleFactor = -1;
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int MaxWorkTiles;
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bool HiresCoordinates;
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GLCompositor CurGLCompositor;
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int ShaderStepIdx = 0;
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void DeleteShaders();
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void SetupAttrs(SpanSetupY* span, Polygon* poly, int from, int to);
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void SetupYSpan(RenderPolygon* rp, SpanSetupY* span, Polygon* poly, int from, int to, int side, s32 positions[10][2]);
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void SetupYSpanDummy(RenderPolygon* rp, SpanSetupY* span, Polygon* poly, int vertex, int side, s32 positions[10][2]);
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bool CompileShader(GLuint& shader, const std::string& source, const std::initializer_list<const char*>& defines);
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};
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}
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#endif
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