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Copy irrlichtmt to <root>/irr/
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286
irr/src/COGLESMaterialRenderer.h
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286
irr/src/COGLESMaterialRenderer.h
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// Copyright (C) 2002-2008 Nikolaus Gebhardt
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// This file is part of the "Irrlicht Engine".
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// For conditions of distribution and use, see copyright notice in irrlicht.h
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#pragma once
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#ifdef _IRR_COMPILE_WITH_OGLES1_
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#include "COGLESDriver.h"
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#include "IMaterialRenderer.h"
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namespace irr
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{
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namespace video
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{
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//! Base class for all internal OGLES1 material renderers
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class COGLES1MaterialRenderer : public IMaterialRenderer
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{
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public:
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//! Constructor
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COGLES1MaterialRenderer(video::COGLES1Driver *driver) :
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Driver(driver)
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{
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}
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protected:
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video::COGLES1Driver *Driver;
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};
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//! Solid material renderer
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class COGLES1MaterialRenderer_SOLID : public COGLES1MaterialRenderer
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{
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public:
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COGLES1MaterialRenderer_SOLID(video::COGLES1Driver *d) :
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COGLES1MaterialRenderer(d) {}
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virtual void OnSetMaterial(const SMaterial &material, const SMaterial &lastMaterial,
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bool resetAllRenderstates, IMaterialRendererServices *services)
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{
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Driver->setBasicRenderStates(material, lastMaterial, resetAllRenderstates);
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if (resetAllRenderstates || (material.MaterialType != lastMaterial.MaterialType)) {
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// thanks to Murphy, the following line removed some
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// bugs with several OGLES1 implementations.
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glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
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}
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}
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};
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//! Generic Texture Blend
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class COGLES1MaterialRenderer_ONETEXTURE_BLEND : public COGLES1MaterialRenderer
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{
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public:
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COGLES1MaterialRenderer_ONETEXTURE_BLEND(video::COGLES1Driver *d) :
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COGLES1MaterialRenderer(d) {}
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virtual void OnSetMaterial(const SMaterial &material, const SMaterial &lastMaterial,
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bool resetAllRenderstates, IMaterialRendererServices *services)
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{
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Driver->setBasicRenderStates(material, lastMaterial, resetAllRenderstates);
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// if (material.MaterialType != lastMaterial.MaterialType ||
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// material.MaterialTypeParam != lastMaterial.MaterialTypeParam ||
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// resetAllRenderstates)
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{
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E_BLEND_FACTOR srcRGBFact, dstRGBFact, srcAlphaFact, dstAlphaFact;
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E_MODULATE_FUNC modulate;
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u32 alphaSource;
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unpack_textureBlendFuncSeparate(srcRGBFact, dstRGBFact, srcAlphaFact, dstAlphaFact, modulate, alphaSource, material.MaterialTypeParam);
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Driver->getCacheHandler()->setBlend(true);
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if (Driver->queryFeature(EVDF_BLEND_SEPARATE)) {
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Driver->getCacheHandler()->setBlendFuncSeparate(Driver->getGLBlend(srcRGBFact), Driver->getGLBlend(dstRGBFact),
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Driver->getGLBlend(srcAlphaFact), Driver->getGLBlend(dstAlphaFact));
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} else {
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Driver->getCacheHandler()->setBlendFunc(Driver->getGLBlend(srcRGBFact), Driver->getGLBlend(dstRGBFact));
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}
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glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
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glTexEnvf(GL_TEXTURE_ENV, GL_COMBINE_RGB, GL_MODULATE);
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glTexEnvf(GL_TEXTURE_ENV, GL_SRC0_RGB, GL_TEXTURE);
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glTexEnvf(GL_TEXTURE_ENV, GL_SRC1_RGB, GL_PREVIOUS);
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glTexEnvf(GL_TEXTURE_ENV, GL_RGB_SCALE, (f32)modulate);
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glEnable(GL_ALPHA_TEST);
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glAlphaFunc(GL_GREATER, 0.f);
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if (textureBlendFunc_hasAlpha(srcRGBFact) || textureBlendFunc_hasAlpha(dstRGBFact) ||
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textureBlendFunc_hasAlpha(srcAlphaFact) || textureBlendFunc_hasAlpha(dstAlphaFact)) {
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glTexEnvf(GL_TEXTURE_ENV, GL_COMBINE_ALPHA, GL_REPLACE);
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glTexEnvf(GL_TEXTURE_ENV, GL_SRC0_ALPHA, GL_TEXTURE);
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glTexEnvf(GL_TEXTURE_ENV, GL_SRC1_RGB, GL_PRIMARY_COLOR);
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}
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}
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}
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virtual void OnUnsetMaterial()
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{
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glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
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glTexEnvf(GL_TEXTURE_ENV, GL_RGB_SCALE, 1.f);
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glTexEnvf(GL_TEXTURE_ENV, GL_SRC1_RGB, GL_PREVIOUS);
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Driver->getCacheHandler()->setBlend(false);
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glDisable(GL_ALPHA_TEST);
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}
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//! Returns if the material is transparent.
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/** Is not always transparent, but mostly. */
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virtual bool isTransparent() const
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{
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return true;
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}
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private:
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u32 getGLBlend(E_BLEND_FACTOR factor) const
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{
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u32 r = 0;
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switch (factor) {
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case EBF_ZERO:
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r = GL_ZERO;
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break;
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case EBF_ONE:
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r = GL_ONE;
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break;
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case EBF_DST_COLOR:
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r = GL_DST_COLOR;
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break;
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case EBF_ONE_MINUS_DST_COLOR:
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r = GL_ONE_MINUS_DST_COLOR;
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break;
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case EBF_SRC_COLOR:
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r = GL_SRC_COLOR;
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break;
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case EBF_ONE_MINUS_SRC_COLOR:
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r = GL_ONE_MINUS_SRC_COLOR;
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break;
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case EBF_SRC_ALPHA:
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r = GL_SRC_ALPHA;
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break;
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case EBF_ONE_MINUS_SRC_ALPHA:
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r = GL_ONE_MINUS_SRC_ALPHA;
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break;
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case EBF_DST_ALPHA:
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r = GL_DST_ALPHA;
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break;
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case EBF_ONE_MINUS_DST_ALPHA:
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r = GL_ONE_MINUS_DST_ALPHA;
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break;
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case EBF_SRC_ALPHA_SATURATE:
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r = GL_SRC_ALPHA_SATURATE;
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break;
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}
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return r;
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}
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};
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//! Transparent vertex alpha material renderer
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class COGLES1MaterialRenderer_TRANSPARENT_VERTEX_ALPHA : public COGLES1MaterialRenderer
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{
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public:
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COGLES1MaterialRenderer_TRANSPARENT_VERTEX_ALPHA(video::COGLES1Driver *d) :
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COGLES1MaterialRenderer(d) {}
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virtual void OnSetMaterial(const SMaterial &material, const SMaterial &lastMaterial,
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bool resetAllRenderstates, IMaterialRendererServices *services)
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{
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Driver->setBasicRenderStates(material, lastMaterial, resetAllRenderstates);
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Driver->getCacheHandler()->setBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
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Driver->getCacheHandler()->setBlend(true);
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if (material.MaterialType != lastMaterial.MaterialType || resetAllRenderstates) {
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glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
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glTexEnvf(GL_TEXTURE_ENV, GL_COMBINE_ALPHA, GL_REPLACE);
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glTexEnvf(GL_TEXTURE_ENV, GL_SRC0_ALPHA, GL_PRIMARY_COLOR);
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glTexEnvf(GL_TEXTURE_ENV, GL_COMBINE_RGB, GL_MODULATE);
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glTexEnvf(GL_TEXTURE_ENV, GL_SRC0_RGB, GL_PRIMARY_COLOR);
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glTexEnvf(GL_TEXTURE_ENV, GL_SRC1_RGB, GL_TEXTURE);
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}
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}
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virtual void OnUnsetMaterial()
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{
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// default values
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glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
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glTexEnvf(GL_TEXTURE_ENV, GL_COMBINE_ALPHA, GL_MODULATE);
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glTexEnvf(GL_TEXTURE_ENV, GL_SRC0_ALPHA, GL_TEXTURE);
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glTexEnvf(GL_TEXTURE_ENV, GL_SRC1_ALPHA, GL_PREVIOUS);
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glTexEnvf(GL_TEXTURE_ENV, GL_COMBINE_RGB, GL_MODULATE);
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glTexEnvf(GL_TEXTURE_ENV, GL_SRC0_RGB, GL_TEXTURE);
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glTexEnvf(GL_TEXTURE_ENV, GL_SRC1_RGB, GL_PREVIOUS);
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Driver->getCacheHandler()->setBlend(false);
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}
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//! Returns if the material is transparent.
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virtual bool isTransparent() const
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{
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return true;
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}
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};
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//! Transparent alpha channel material renderer
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class COGLES1MaterialRenderer_TRANSPARENT_ALPHA_CHANNEL : public COGLES1MaterialRenderer
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{
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public:
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COGLES1MaterialRenderer_TRANSPARENT_ALPHA_CHANNEL(video::COGLES1Driver *d) :
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COGLES1MaterialRenderer(d) {}
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virtual void OnSetMaterial(const SMaterial &material, const SMaterial &lastMaterial,
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bool resetAllRenderstates, IMaterialRendererServices *services)
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{
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Driver->setBasicRenderStates(material, lastMaterial, resetAllRenderstates);
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Driver->getCacheHandler()->setBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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Driver->getCacheHandler()->setBlend(true);
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if (material.MaterialType != lastMaterial.MaterialType || resetAllRenderstates || material.MaterialTypeParam != lastMaterial.MaterialTypeParam) {
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glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
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glTexEnvf(GL_TEXTURE_ENV, GL_COMBINE_RGB, GL_MODULATE);
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glTexEnvf(GL_TEXTURE_ENV, GL_SRC0_RGB, GL_TEXTURE);
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glTexEnvf(GL_TEXTURE_ENV, GL_SRC1_RGB, GL_PREVIOUS);
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glTexEnvf(GL_TEXTURE_ENV, GL_COMBINE_ALPHA, GL_REPLACE);
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glTexEnvf(GL_TEXTURE_ENV, GL_SRC0_ALPHA, GL_TEXTURE);
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glEnable(GL_ALPHA_TEST);
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glAlphaFunc(GL_GREATER, material.MaterialTypeParam);
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}
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}
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virtual void OnUnsetMaterial()
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{
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glDisable(GL_ALPHA_TEST);
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Driver->getCacheHandler()->setBlend(false);
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}
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//! Returns if the material is transparent.
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virtual bool isTransparent() const
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{
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return true;
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}
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};
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//! Transparent alpha channel material renderer
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class COGLES1MaterialRenderer_TRANSPARENT_ALPHA_CHANNEL_REF : public COGLES1MaterialRenderer
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{
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public:
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COGLES1MaterialRenderer_TRANSPARENT_ALPHA_CHANNEL_REF(video::COGLES1Driver *d) :
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COGLES1MaterialRenderer(d) {}
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virtual void OnSetMaterial(const SMaterial &material, const SMaterial &lastMaterial,
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bool resetAllRenderstates, IMaterialRendererServices *services)
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{
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Driver->setBasicRenderStates(material, lastMaterial, resetAllRenderstates);
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if (material.MaterialType != lastMaterial.MaterialType || resetAllRenderstates) {
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glEnable(GL_ALPHA_TEST);
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glAlphaFunc(GL_GREATER, 0.5f);
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glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
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}
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}
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virtual void OnUnsetMaterial()
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{
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glDisable(GL_ALPHA_TEST);
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}
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//! Returns if the material is transparent.
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virtual bool isTransparent() const
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{
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return false; // this material is not really transparent because it does no blending.
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}
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};
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} // end namespace video
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} // end namespace irr
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#endif
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