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// Copyright (C) 2023 Vitaliy Lobachevskiy
// Copyright (C) 2014 Patryk Nadrowski
// This file is part of the "Irrlicht Engine".
// For conditions of distribution and use, see copyright notice in Irrlicht.h
#include "FixedPipelineRenderer.h"
#include "IVideoDriver.h"
namespace irr
{
namespace video
{
// Base callback
COpenGL3MaterialBaseCB::COpenGL3MaterialBaseCB() :
FirstUpdateBase(true), WVPMatrixID(-1), WVMatrixID(-1), NMatrixID(-1),
FogEnableID(-1), FogTypeID(-1), FogColorID(-1), FogStartID(-1),
FogEndID(-1), FogDensityID(-1), ThicknessID(-1), LightEnable(false), MaterialAmbient(SColorf(0.f, 0.f, 0.f)), MaterialDiffuse(SColorf(0.f, 0.f, 0.f)), MaterialEmissive(SColorf(0.f, 0.f, 0.f)), MaterialSpecular(SColorf(0.f, 0.f, 0.f)),
MaterialShininess(0.f), FogEnable(0), FogType(1), FogColor(SColorf(0.f, 0.f, 0.f, 1.f)), FogStart(0.f), FogEnd(0.f), FogDensity(0.f), Thickness(1.f)
{
}
void COpenGL3MaterialBaseCB::OnSetMaterial(const SMaterial& material)
{
LightEnable = material.Lighting;
MaterialAmbient = SColorf(material.AmbientColor);
MaterialDiffuse = SColorf(material.DiffuseColor);
MaterialEmissive = SColorf(material.EmissiveColor);
MaterialSpecular = SColorf(material.SpecularColor);
MaterialShininess = material.Shininess;
FogEnable = material.FogEnable ? 1 : 0;
Thickness = (material.Thickness > 0.f) ? material.Thickness : 1.f;
}
void COpenGL3MaterialBaseCB::OnSetConstants(IMaterialRendererServices* services, s32 userData)
{
IVideoDriver* driver = services->getVideoDriver();
if (FirstUpdateBase)
{
WVPMatrixID = services->getVertexShaderConstantID("uWVPMatrix");
WVMatrixID = services->getVertexShaderConstantID("uWVMatrix");
NMatrixID = services->getVertexShaderConstantID("uNMatrix");
FogEnableID = services->getVertexShaderConstantID("uFogEnable");
FogTypeID = services->getVertexShaderConstantID("uFogType");
FogColorID = services->getVertexShaderConstantID("uFogColor");
FogStartID = services->getVertexShaderConstantID("uFogStart");
FogEndID = services->getVertexShaderConstantID("uFogEnd");
FogDensityID = services->getVertexShaderConstantID("uFogDensity");
ThicknessID = services->getVertexShaderConstantID("uThickness");
FirstUpdateBase = false;
}
const core::matrix4 W = driver->getTransform(ETS_WORLD);
const core::matrix4 V = driver->getTransform(ETS_VIEW);
const core::matrix4 P = driver->getTransform(ETS_PROJECTION);
core::matrix4 Matrix = P * V * W;
services->setPixelShaderConstant(WVPMatrixID, Matrix.pointer(), 16);
Matrix = V * W;
services->setPixelShaderConstant(WVMatrixID, Matrix.pointer(), 16);
Matrix.makeInverse();
services->setPixelShaderConstant(NMatrixID, Matrix.getTransposed().pointer(), 16);
services->setPixelShaderConstant(FogEnableID, &FogEnable, 1);
if (FogEnable)
{
SColor TempColor(0);
E_FOG_TYPE TempType = EFT_FOG_LINEAR;
bool TempPerFragment = false;
bool TempRange = false;
driver->getFog(TempColor, TempType, FogStart, FogEnd, FogDensity, TempPerFragment, TempRange);
FogType = (s32)TempType;
FogColor = SColorf(TempColor);
services->setPixelShaderConstant(FogTypeID, &FogType, 1);
services->setPixelShaderConstant(FogColorID, reinterpret_cast<f32*>(&FogColor), 4);
services->setPixelShaderConstant(FogStartID, &FogStart, 1);
services->setPixelShaderConstant(FogEndID, &FogEnd, 1);
services->setPixelShaderConstant(FogDensityID, &FogDensity, 1);
}
services->setPixelShaderConstant(ThicknessID, &Thickness, 1);
}
// EMT_SOLID + EMT_TRANSPARENT_ADD_COLOR + EMT_TRANSPARENT_ALPHA_CHANNEL + EMT_TRANSPARENT_VERTEX_ALPHA
COpenGL3MaterialSolidCB::COpenGL3MaterialSolidCB() :
FirstUpdate(true), TMatrix0ID(-1), AlphaRefID(-1), TextureUsage0ID(-1), TextureUnit0ID(-1), AlphaRef(0.5f), TextureUsage0(0), TextureUnit0(0)
{
}
void COpenGL3MaterialSolidCB::OnSetMaterial(const SMaterial& material)
{
COpenGL3MaterialBaseCB::OnSetMaterial(material);
AlphaRef = material.MaterialTypeParam;
TextureUsage0 = (material.TextureLayer[0].Texture) ? 1 : 0;
}
void COpenGL3MaterialSolidCB::OnSetConstants(IMaterialRendererServices* services, s32 userData)
{
COpenGL3MaterialBaseCB::OnSetConstants(services, userData);
IVideoDriver* driver = services->getVideoDriver();
if (FirstUpdate)
{
TMatrix0ID = services->getVertexShaderConstantID("uTMatrix0");
AlphaRefID = services->getVertexShaderConstantID("uAlphaRef");
TextureUsage0ID = services->getVertexShaderConstantID("uTextureUsage0");
TextureUnit0ID = services->getVertexShaderConstantID("uTextureUnit0");
FirstUpdate = false;
}
core::matrix4 Matrix = driver->getTransform(ETS_TEXTURE_0);
services->setPixelShaderConstant(TMatrix0ID, Matrix.pointer(), 16);
services->setPixelShaderConstant(AlphaRefID, &AlphaRef, 1);
services->setPixelShaderConstant(TextureUsage0ID, &TextureUsage0, 1);
services->setPixelShaderConstant(TextureUnit0ID, &TextureUnit0, 1);
}
// EMT_ONETEXTURE_BLEND
COpenGL3MaterialOneTextureBlendCB::COpenGL3MaterialOneTextureBlendCB() :
FirstUpdate(true), TMatrix0ID(-1), BlendTypeID(-1), TextureUsage0ID(-1), TextureUnit0ID(-1), BlendType(0), TextureUsage0(0), TextureUnit0(0)
{
}
void COpenGL3MaterialOneTextureBlendCB::OnSetMaterial(const SMaterial& material)
{
COpenGL3MaterialBaseCB::OnSetMaterial(material);
BlendType = 0;
E_BLEND_FACTOR srcRGBFact,dstRGBFact,srcAlphaFact,dstAlphaFact;
E_MODULATE_FUNC modulate;
u32 alphaSource;
unpack_textureBlendFuncSeparate(srcRGBFact, dstRGBFact, srcAlphaFact, dstAlphaFact, modulate, alphaSource, material.MaterialTypeParam);
if (textureBlendFunc_hasAlpha(srcRGBFact) || textureBlendFunc_hasAlpha(dstRGBFact) || textureBlendFunc_hasAlpha(srcAlphaFact) || textureBlendFunc_hasAlpha(dstAlphaFact))
{
if (alphaSource == EAS_VERTEX_COLOR)
{
BlendType = 1;
}
else if (alphaSource == EAS_TEXTURE)
{
BlendType = 2;
}
}
TextureUsage0 = (material.TextureLayer[0].Texture) ? 1 : 0;
}
void COpenGL3MaterialOneTextureBlendCB::OnSetConstants(IMaterialRendererServices* services, s32 userData)
{
COpenGL3MaterialBaseCB::OnSetConstants(services, userData);
IVideoDriver* driver = services->getVideoDriver();
if (FirstUpdate)
{
TMatrix0ID = services->getVertexShaderConstantID("uTMatrix0");
BlendTypeID = services->getVertexShaderConstantID("uBlendType");
TextureUsage0ID = services->getVertexShaderConstantID("uTextureUsage0");
TextureUnit0ID = services->getVertexShaderConstantID("uTextureUnit0");
FirstUpdate = false;
}
core::matrix4 Matrix = driver->getTransform(ETS_TEXTURE_0);
services->setPixelShaderConstant(TMatrix0ID, Matrix.pointer(), 16);
services->setPixelShaderConstant(BlendTypeID, &BlendType, 1);
services->setPixelShaderConstant(TextureUsage0ID, &TextureUsage0, 1);
services->setPixelShaderConstant(TextureUnit0ID, &TextureUnit0, 1);
}
}
}
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