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/*
Copyright 2016-2023 melonDS team
This file is part of melonDS.
melonDS is free software: you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation, either version 3 of the License, or (at your option)
any later version.
melonDS is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with melonDS. If not, see http://www.gnu.org/licenses/.
*/
#pragma once
#include "GPU3D.h"
#include "OpenGLSupport.h"
namespace GPU3D
{
class GLRenderer : public Renderer3D
{
public:
virtual ~GLRenderer() override;
virtual void Reset() override;
virtual void SetRenderSettings(GPU::RenderSettings& settings) override;
virtual void VCount144() override {};
virtual void RenderFrame() override;
virtual u32* GetLine(int line) override;
void SetupAccelFrame();
void PrepareCaptureFrame();
static std::unique_ptr<GLRenderer> New() noexcept;
private:
// Used by New()
GLRenderer() noexcept;
// GL version requirements
// * texelFetch: 3.0 (GLSL 1.30) (3.2/1.50 for MS)
// * UBO: 3.1
struct RendererPolygon
{
Polygon* PolyData;
u32 NumIndices;
u32 IndicesOffset;
GLuint PrimType;
u32 NumEdgeIndices;
u32 EdgeIndicesOffset;
u32 RenderKey;
};
RendererPolygon PolygonList[2048] {};
bool BuildRenderShader(u32 flags, const char* vs, const char* fs);
void UseRenderShader(u32 flags);
void SetupPolygon(RendererPolygon* rp, Polygon* polygon);
u32* SetupVertex(Polygon* poly, int vid, Vertex* vtx, u32 vtxattr, u32* vptr);
void BuildPolygons(RendererPolygon* polygons, int npolys);
int RenderSinglePolygon(int i);
int RenderPolygonBatch(int i);
int RenderPolygonEdgeBatch(int i);
void RenderSceneChunk(int y, int h);
enum
{
RenderFlag_WBuffer = 0x01,
RenderFlag_Trans = 0x02,
RenderFlag_ShadowMask = 0x04,
RenderFlag_Edge = 0x08,
};
GLuint ClearShaderPlain[3] {};
GLuint RenderShader[16][3] {};
GLuint CurShaderID = -1;
GLuint FinalPassEdgeShader[3] {};
GLuint FinalPassFogShader[3] {};
// std140 compliant structure
struct
{
float uScreenSize[2]; // vec2 0 / 2
u32 uDispCnt; // int 2 / 1
u32 __pad0;
float uToonColors[32][4]; // vec4[32] 4 / 128
float uEdgeColors[8][4]; // vec4[8] 132 / 32
float uFogColor[4]; // vec4 164 / 4
float uFogDensity[34][4]; // float[34] 168 / 136
u32 uFogOffset; // int 304 / 1
u32 uFogShift; // int 305 / 1
u32 _pad1[2]; // int 306 / 2
} ShaderConfig {};
GLuint ShaderConfigUBO {};
int NumFinalPolys {}, NumOpaqueFinalPolys {};
GLuint ClearVertexBufferID = 0, ClearVertexArrayID {};
GLint ClearUniformLoc[4] {};
// vertex buffer
// * XYZW: 4x16bit
// * RGBA: 4x8bit
// * ST: 2x16bit
// * polygon data: 3x32bit (polygon/texture attributes)
//
// polygon attributes:
// * bit4-7, 11, 14-15, 24-29: POLYGON_ATTR
// * bit16-20: Z shift
// * bit8: front-facing (?)
// * bit9: W-buffering (?)
GLuint VertexBufferID {};
u32 VertexBuffer[10240 * 7] {};
u32 NumVertices {};
GLuint VertexArrayID {};
GLuint IndexBufferID {};
u16 IndexBuffer[2048 * 40] {};
u32 NumIndices {}, NumEdgeIndices {};
const u32 EdgeIndicesOffset = 2048 * 30;
GLuint TexMemID {};
GLuint TexPalMemID {};
int ScaleFactor {};
bool BetterPolygons {};
int ScreenW {}, ScreenH {};
GLuint FramebufferTex[8] {};
int FrontBuffer {};
GLuint FramebufferID[4] {}, PixelbufferID {};
u32 Framebuffer[256*192] {};
};
}
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