irrlicht/src/COGLESMaterialRenderer.h

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// Copyright (C) 2002-2008 Nikolaus Gebhardt
// This file is part of the "Irrlicht Engine".
// For conditions of distribution and use, see copyright notice in irrlicht.h
#pragma once
#ifdef _IRR_COMPILE_WITH_OGLES1_
#include "COGLESDriver.h"
#include "IMaterialRenderer.h"
namespace irr
{
namespace video
{
//! Base class for all internal OGLES1 material renderers
class COGLES1MaterialRenderer : public IMaterialRenderer
{
public:
//! Constructor
COGLES1MaterialRenderer(video::COGLES1Driver *driver) :
Driver(driver)
{
}
protected:
video::COGLES1Driver *Driver;
};
//! Solid material renderer
class COGLES1MaterialRenderer_SOLID : public COGLES1MaterialRenderer
{
public:
COGLES1MaterialRenderer_SOLID(video::COGLES1Driver *d) :
COGLES1MaterialRenderer(d) {}
virtual void OnSetMaterial(const SMaterial &material, const SMaterial &lastMaterial,
bool resetAllRenderstates, IMaterialRendererServices *services)
{
Driver->setBasicRenderStates(material, lastMaterial, resetAllRenderstates);
if (resetAllRenderstates || (material.MaterialType != lastMaterial.MaterialType)) {
// thanks to Murphy, the following line removed some
// bugs with several OGLES1 implementations.
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
}
}
};
//! Generic Texture Blend
class COGLES1MaterialRenderer_ONETEXTURE_BLEND : public COGLES1MaterialRenderer
{
public:
COGLES1MaterialRenderer_ONETEXTURE_BLEND(video::COGLES1Driver *d) :
COGLES1MaterialRenderer(d) {}
virtual void OnSetMaterial(const SMaterial &material, const SMaterial &lastMaterial,
bool resetAllRenderstates, IMaterialRendererServices *services)
{
Driver->setBasicRenderStates(material, lastMaterial, resetAllRenderstates);
// if (material.MaterialType != lastMaterial.MaterialType ||
// material.MaterialTypeParam != lastMaterial.MaterialTypeParam ||
// resetAllRenderstates)
{
E_BLEND_FACTOR srcRGBFact, dstRGBFact, srcAlphaFact, dstAlphaFact;
E_MODULATE_FUNC modulate;
u32 alphaSource;
unpack_textureBlendFuncSeparate(srcRGBFact, dstRGBFact, srcAlphaFact, dstAlphaFact, modulate, alphaSource, material.MaterialTypeParam);
Driver->getCacheHandler()->setBlend(true);
if (Driver->queryFeature(EVDF_BLEND_SEPARATE)) {
Driver->getCacheHandler()->setBlendFuncSeparate(Driver->getGLBlend(srcRGBFact), Driver->getGLBlend(dstRGBFact),
Driver->getGLBlend(srcAlphaFact), Driver->getGLBlend(dstAlphaFact));
} else {
Driver->getCacheHandler()->setBlendFunc(Driver->getGLBlend(srcRGBFact), Driver->getGLBlend(dstRGBFact));
}
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
glTexEnvf(GL_TEXTURE_ENV, GL_COMBINE_RGB, GL_MODULATE);
glTexEnvf(GL_TEXTURE_ENV, GL_SRC0_RGB, GL_TEXTURE);
glTexEnvf(GL_TEXTURE_ENV, GL_SRC1_RGB, GL_PREVIOUS);
glTexEnvf(GL_TEXTURE_ENV, GL_RGB_SCALE, (f32)modulate);
glEnable(GL_ALPHA_TEST);
glAlphaFunc(GL_GREATER, 0.f);
if (textureBlendFunc_hasAlpha(srcRGBFact) || textureBlendFunc_hasAlpha(dstRGBFact) ||
textureBlendFunc_hasAlpha(srcAlphaFact) || textureBlendFunc_hasAlpha(dstAlphaFact)) {
glTexEnvf(GL_TEXTURE_ENV, GL_COMBINE_ALPHA, GL_REPLACE);
glTexEnvf(GL_TEXTURE_ENV, GL_SRC0_ALPHA, GL_TEXTURE);
glTexEnvf(GL_TEXTURE_ENV, GL_SRC1_RGB, GL_PRIMARY_COLOR);
}
}
}
virtual void OnUnsetMaterial()
{
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
glTexEnvf(GL_TEXTURE_ENV, GL_RGB_SCALE, 1.f);
glTexEnvf(GL_TEXTURE_ENV, GL_SRC1_RGB, GL_PREVIOUS);
Driver->getCacheHandler()->setBlend(false);
glDisable(GL_ALPHA_TEST);
}
//! Returns if the material is transparent.
/** Is not always transparent, but mostly. */
virtual bool isTransparent() const
{
return true;
}
private:
u32 getGLBlend(E_BLEND_FACTOR factor) const
{
u32 r = 0;
switch (factor) {
case EBF_ZERO:
r = GL_ZERO;
break;
case EBF_ONE:
r = GL_ONE;
break;
case EBF_DST_COLOR:
r = GL_DST_COLOR;
break;
case EBF_ONE_MINUS_DST_COLOR:
r = GL_ONE_MINUS_DST_COLOR;
break;
case EBF_SRC_COLOR:
r = GL_SRC_COLOR;
break;
case EBF_ONE_MINUS_SRC_COLOR:
r = GL_ONE_MINUS_SRC_COLOR;
break;
case EBF_SRC_ALPHA:
r = GL_SRC_ALPHA;
break;
case EBF_ONE_MINUS_SRC_ALPHA:
r = GL_ONE_MINUS_SRC_ALPHA;
break;
case EBF_DST_ALPHA:
r = GL_DST_ALPHA;
break;
case EBF_ONE_MINUS_DST_ALPHA:
r = GL_ONE_MINUS_DST_ALPHA;
break;
case EBF_SRC_ALPHA_SATURATE:
r = GL_SRC_ALPHA_SATURATE;
break;
}
return r;
}
};
//! Transparent vertex alpha material renderer
class COGLES1MaterialRenderer_TRANSPARENT_VERTEX_ALPHA : public COGLES1MaterialRenderer
{
public:
COGLES1MaterialRenderer_TRANSPARENT_VERTEX_ALPHA(video::COGLES1Driver *d) :
COGLES1MaterialRenderer(d) {}
virtual void OnSetMaterial(const SMaterial &material, const SMaterial &lastMaterial,
bool resetAllRenderstates, IMaterialRendererServices *services)
{
Driver->setBasicRenderStates(material, lastMaterial, resetAllRenderstates);
Driver->getCacheHandler()->setBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
Driver->getCacheHandler()->setBlend(true);
if (material.MaterialType != lastMaterial.MaterialType || resetAllRenderstates) {
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
glTexEnvf(GL_TEXTURE_ENV, GL_COMBINE_ALPHA, GL_REPLACE);
glTexEnvf(GL_TEXTURE_ENV, GL_SRC0_ALPHA, GL_PRIMARY_COLOR);
glTexEnvf(GL_TEXTURE_ENV, GL_COMBINE_RGB, GL_MODULATE);
glTexEnvf(GL_TEXTURE_ENV, GL_SRC0_RGB, GL_PRIMARY_COLOR);
glTexEnvf(GL_TEXTURE_ENV, GL_SRC1_RGB, GL_TEXTURE);
}
}
virtual void OnUnsetMaterial()
{
// default values
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
glTexEnvf(GL_TEXTURE_ENV, GL_COMBINE_ALPHA, GL_MODULATE);
glTexEnvf(GL_TEXTURE_ENV, GL_SRC0_ALPHA, GL_TEXTURE);
glTexEnvf(GL_TEXTURE_ENV, GL_SRC1_ALPHA, GL_PREVIOUS);
glTexEnvf(GL_TEXTURE_ENV, GL_COMBINE_RGB, GL_MODULATE);
glTexEnvf(GL_TEXTURE_ENV, GL_SRC0_RGB, GL_TEXTURE);
glTexEnvf(GL_TEXTURE_ENV, GL_SRC1_RGB, GL_PREVIOUS);
Driver->getCacheHandler()->setBlend(false);
}
//! Returns if the material is transparent.
virtual bool isTransparent() const
{
return true;
}
};
//! Transparent alpha channel material renderer
class COGLES1MaterialRenderer_TRANSPARENT_ALPHA_CHANNEL : public COGLES1MaterialRenderer
{
public:
COGLES1MaterialRenderer_TRANSPARENT_ALPHA_CHANNEL(video::COGLES1Driver *d) :
COGLES1MaterialRenderer(d) {}
virtual void OnSetMaterial(const SMaterial &material, const SMaterial &lastMaterial,
bool resetAllRenderstates, IMaterialRendererServices *services)
{
Driver->setBasicRenderStates(material, lastMaterial, resetAllRenderstates);
Driver->getCacheHandler()->setBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
Driver->getCacheHandler()->setBlend(true);
if (material.MaterialType != lastMaterial.MaterialType || resetAllRenderstates || material.MaterialTypeParam != lastMaterial.MaterialTypeParam) {
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
glTexEnvf(GL_TEXTURE_ENV, GL_COMBINE_RGB, GL_MODULATE);
glTexEnvf(GL_TEXTURE_ENV, GL_SRC0_RGB, GL_TEXTURE);
glTexEnvf(GL_TEXTURE_ENV, GL_SRC1_RGB, GL_PREVIOUS);
glTexEnvf(GL_TEXTURE_ENV, GL_COMBINE_ALPHA, GL_REPLACE);
glTexEnvf(GL_TEXTURE_ENV, GL_SRC0_ALPHA, GL_TEXTURE);
glEnable(GL_ALPHA_TEST);
glAlphaFunc(GL_GREATER, material.MaterialTypeParam);
}
}
virtual void OnUnsetMaterial()
{
glDisable(GL_ALPHA_TEST);
Driver->getCacheHandler()->setBlend(false);
}
//! Returns if the material is transparent.
virtual bool isTransparent() const
{
return true;
}
};
//! Transparent alpha channel material renderer
class COGLES1MaterialRenderer_TRANSPARENT_ALPHA_CHANNEL_REF : public COGLES1MaterialRenderer
{
public:
COGLES1MaterialRenderer_TRANSPARENT_ALPHA_CHANNEL_REF(video::COGLES1Driver *d) :
COGLES1MaterialRenderer(d) {}
virtual void OnSetMaterial(const SMaterial &material, const SMaterial &lastMaterial,
bool resetAllRenderstates, IMaterialRendererServices *services)
{
Driver->setBasicRenderStates(material, lastMaterial, resetAllRenderstates);
if (material.MaterialType != lastMaterial.MaterialType || resetAllRenderstates) {
glEnable(GL_ALPHA_TEST);
glAlphaFunc(GL_GREATER, 0.5f);
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
}
}
virtual void OnUnsetMaterial()
{
glDisable(GL_ALPHA_TEST);
}
//! Returns if the material is transparent.
virtual bool isTransparent() const
{
return false; // this material is not really transparent because it does no blending.
}
};
} // end namespace video
} // end namespace irr
#endif