raze-gles/source/glbackend/glbackend.h

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#pragma once
#include <stdlib.h>
#include <algorithm>
#include <vector>
#include <map>
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#include "gl_samplers.h"
#include "gl_hwtexture.h"
#include "gl_renderstate.h"
#include "matrix.h"
#include "palentry.h"
#include "renderstyle.h"
class FSamplerManager;
class FShader;
class PolymostShader;
class SurfaceShader;
class FTexture;
class GLInstance;
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class F2DDrawer;
struct palette_t;
struct PaletteData
{
int32_t crc32;
PalEntry colors[256];
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bool shadesdone;
int whiteindex, blackindex;
FHardwareTexture* paltexture;
};
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struct PalShade
{
int palindex;
float mulshade, addshade;
};
struct PalswapData
{
int32_t crc32;
const uint8_t *lookup; // points to the original data. This is static so no need to copy
FHardwareTexture* swaptexture;
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PalEntry fadeColor;
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};
enum
{
PALSWAP_TEXTURE_SIZE = 2048
};
class PaletteManager
{
// The current engine limit is 256 palettes and 256 palswaps.
uint32_t palettemap[256] = {};
uint32_t palswapmap[256] = {};
float addshade[256] = {};
float mulshade[256] = {};
uint32_t lastindex = ~0u;
uint32_t lastsindex = ~0u;
int numshades = 1;
// All data is being stored in contiguous blocks that can be used as uniform buffers as-is.
TArray<PaletteData> palettes;
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TArray<PalswapData> palswaps;
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TMap<int, int> swappedpalmap;
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FHardwareTexture* palswapTexture = nullptr;
GLInstance* const inst;
//OpenGLRenderer::GLDataBuffer* palswapBuffer = nullptr;
unsigned FindPalswap(const uint8_t* paldata, palette_t& fadecolor);
public:
PaletteManager(GLInstance *inst_) : inst(inst_)
{}
~PaletteManager();
void DeleteAll();
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void DeleteAllTextures();
void SetPalette(int index, const uint8_t *data);
void SetPalswapData(int index, const uint8_t* data, int numshades, palette_t &fadecolor);
void BindPalette(int index);
void BindPalswap(int index);
int ActivePalswap() const { return lastsindex; }
int LookupPalette(int palette, int palswap, bool brightmap);
const PalEntry *GetPaletteData(int palid) const { return palettes[palid].colors; }
unsigned FindPalette(const uint8_t* paldata);
};
struct glinfo_t {
const char* vendor;
const char* renderer;
const char* version;
const char* extensions;
float maxanisotropy;
char bufferstorage;
char dumped;
};
struct BaseVertex
{
float x, y, z;
float u, v;
void SetVertex(float _x, float _y, float _z = 0)
{
x = _x;
y = _y;
z = _z;
}
void SetTexCoord(float _u = 0, float _v = 0)
{
u = _u;
v = _v;
}
void Set(float _x, float _y, float _z = 0, float _u = 0, float _v = 0)
{
x = _x;
y = _y;
z = _z;
u = _u;
v = _v;
}
};
enum EDrawType
{
DT_TRIANGLES,
DT_TRIANGLE_STRIP,
DT_TRIANGLE_FAN,
DT_QUADS,
DT_LINES
};
enum EMatrixType
{
Matrix_View,
Matrix_Projection,
Matrix_ModelView,
Matrix_Detail,
Matrix_Texture,
// These are the only ones being used.
NUMMATRICES
};
enum ECull
{
Cull_None,
Cull_Front,
Cull_Back
};
enum EDepthFunc
{
Depth_Always,
Depth_Less,
Depth_Equal,
Depth_LessEqual
};
enum EWinding
{
Winding_CCW,
Winding_CW
};
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enum ETexType
{
TT_INDEXED,
TT_TRUECOLOR,
TT_HICREPLACE,
TT_BRIGHTMAP
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};
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struct ImDrawData;
struct palette_t;
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class GLInstance
{
enum
{
MAX_TEXTURES = 15, // slot 15 is used internally and not available.
THCACHESIZE = 200,
};
std::vector<BaseVertex> Buffer; // cheap-ass implementation. The primary purpose is to get the GL accesses out of polymost.cpp, not writing something performant right away.
unsigned int LastBoundTextures[MAX_TEXTURES];
unsigned TextureHandleCache[THCACHESIZE];
int currentindex = THCACHESIZE;
int maxTextureSize;
PaletteManager palmanager;
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int lastPalswapIndex = -1;
FHardwareTexture* texv;
FTexture* currentTexture = nullptr;
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int TextureType;
int MatrixChange = 0;
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IVertexBuffer* LastVertexBuffer = nullptr;
int LastVB_Offset[2] = {};
IIndexBuffer* LastIndexBuffer = nullptr;
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VSMatrix matrices[NUMMATRICES];
PolymostRenderState renderState;
FShader* activeShader;
PolymostShader* polymostShader;
SurfaceShader* surfaceShader;
FShader* vpxShader;
public:
glinfo_t glinfo;
FSamplerManager *mSamplers;
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void Init(int y);
void InitGLState(int fogmode, int multisample);
void LoadPolymostShader();
void LoadSurfaceShader();
void LoadVPXShader();
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void Draw2D(F2DDrawer* drawer);
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void DrawImGui(ImDrawData*);
void Deinit();
static int GetTexDimension(int value)
{
//if (value > gl.max_texturesize) return gl.max_texturesize;
return value;
}
GLInstance();
std::pair<size_t, BaseVertex *> AllocVertices(size_t num);
void Draw(EDrawType type, size_t start, size_t count);
int GetTextureID();
FHardwareTexture* NewTexture();
void BindTexture(int texunit, FHardwareTexture *texid, int sampler = NoSampler);
void UnbindTexture(int texunit);
void UnbindAllTextures();
void EnableBlend(bool on);
void EnableDepthTest(bool on);
void EnableMultisampling(bool on);
void SetVertexBuffer(IVertexBuffer* vb, int offset1, int offset2)
{
renderState.VertexBuffer = vb;
renderState.VB_Offset[0] = offset1;
renderState.VB_Offset[1] = offset2;
}
void SetIndexBuffer(IIndexBuffer* vb)
{
renderState.IndexBuffer = vb;
}
const VSMatrix &GetMatrix(int num)
{
return matrices[num];
}
void SetMatrix(int num, const VSMatrix *mat );
void SetMatrix(int num, const float *mat)
{
SetMatrix(num, reinterpret_cast<const VSMatrix*>(mat));
}
void SetCull(int type, int winding = Winding_CCW);
void EnableStencilWrite(int value);
void EnableStencilTest(int value);
void DisableStencil();
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void SetColor(float r, float g, float b, float a = 1.f);
void SetColorub(uint8_t r, uint8_t g, uint8_t b, uint8_t a = 255)
{
SetColor(r * (1 / 255.f), g * (1 / 255.f), b * (1 / 255.f), a * (1 / 255.f));
}
void SetDepthFunc(int func);
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void SetColorMask(bool on);
void SetDepthMask(bool on);
void SetBlendFunc(int src, int dst);
void SetBlendOp(int op);
void ClearScreen(float r, float g, float b, bool depth);
void ClearDepth();
void SetViewport(int x, int y, int w, int h);
void SetWireframe(bool on);
void SetPolymostShader();
void SetSurfaceShader();
void SetVPXShader();
void SetPalette(int palette);
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bool ApplyTextureProps(FTexture *tex, int pal);
void RestoreTextureProps();
void ReadPixels(int w, int h, uint8_t* buffer);
void SetPaletteData(int index, const uint8_t* data)
{
palmanager.SetPalette(index, data);
}
void SetPalswapData(int index, const uint8_t* data, int numshades, palette_t& fadecolor)
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{
palmanager.SetPalswapData(index, data, numshades, fadecolor);
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}
void SetPalswap(int index);
int GetClamp()
{
return 0;// int(renderState.Clamp[0] + 2 * renderState.Clamp[1]);
}
void SetClamp(int clamp)
{
// This option is totally pointless and should be removed.
//renderState.Clamp[0] = clamp & 1;
//renderState.Clamp[1] = !!(clamp & 2);
}
void SetShade(int32_t shade, int numshades)
{
renderState.Shade = shade;
renderState.NumShades = numshades;
renderState.ShadeDiv = 1.f / (numshades-2);
}
void SetVisibility(float visibility, float fviewingrange)
{
renderState.VisFactor = visibility* fviewingrange* (1.f / (64.f * 65536.f));
}
void UseColorOnly(bool yes)
{
if (yes) renderState.Flags |= RF_ColorOnly;
else renderState.Flags &= ~RF_ColorOnly;
}
void UseDetailMapping(bool yes)
{
if (yes) renderState.Flags |= RF_DetailMapping;
else renderState.Flags &= ~RF_DetailMapping;
}
void UseGlowMapping(bool yes)
{
if (yes) renderState.Flags |= RF_GlowMapping;
else renderState.Flags &= ~RF_GlowMapping;
}
void UseBrightmaps(bool yes)
{
if (yes) renderState.Flags |= RF_Brightmapping;
else renderState.Flags &= ~RF_Brightmapping;
}
void SetNpotEmulation(bool yes, float factor, float xOffset)
{
if (yes)
{
renderState.Flags |= RF_NPOTEmulation;
renderState.NPOTEmulationFactor = factor;
renderState.NPOTEmulationXOffset = xOffset;
}
else renderState.Flags &= ~RF_NPOTEmulation;
}
void SetShadeInterpolate(int32_t yes)
{
if (yes) renderState.Flags |= RF_ShadeInterpolate;
else renderState.Flags &= ~RF_ShadeInterpolate;
}
void SetFadeColor(PalEntry color)
{
renderState.FogColor = color;
};
void SetFadeDisable(bool yes)
{
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if (yes) renderState.Flags |= RF_FogDisabled;
else renderState.Flags &= ~RF_FogDisabled;
}
void SetBrightness(int brightness)
{
renderState.Brightness = 8.f / (brightness + 8.f);
}
void SetTinting(int flags, PalEntry color, PalEntry modulateColor)
{
// not yet implemented.
}
void SetBasepalTint(PalEntry color)
{
// not yet implemented - only relevant for hires replacements.
}
int GetPaletteIndex(PalEntry* palette)
{
return palmanager.FindPalette((uint8_t*)palette);
}
void EnableAlphaTest(bool on)
{
renderState.AlphaTest = on;
}
void SetAlphaThreshold(float al)
{
renderState.AlphaThreshold = al;
}
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FHardwareTexture* CreateIndexedTexture(FTexture* tex);
FHardwareTexture* CreateTrueColorTexture(FTexture* tex, int palid, bool checkfulltransparency = false, bool rgb8bit = false);
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FHardwareTexture *LoadTexture(FTexture* tex, int texturetype, int palid);
bool SetTextureInternal(int globalpicnum, FTexture* tex, int palette, int method, int sampleroverride, float xpanning, float ypanning, FTexture *det, float detscale, FTexture *glow);
bool SetNamedTexture(FTexture* tex, int palette, int sampleroverride);
bool SetTexture(int globalpicnum, FTexture* tex, int palette, int method, int sampleroverride)
{
return SetTextureInternal(globalpicnum, tex, palette, method, sampleroverride, 0, 0, nullptr, 1, nullptr);
}
bool SetModelTexture(FTexture *tex, int palette, float xpanning, float ypanning, FTexture *det, float detscale, FTexture *glow)
{
return SetTextureInternal(-1, tex, palette, 8/*DAMETH_MODEL*/, -1, xpanning, ypanning, det, detscale, glow);
}
};
extern GLInstance GLInterface;