582 lines
14 KiB
C++
582 lines
14 KiB
C++
// Copyright (C) 2015 Patryk Nadrowski
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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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#ifndef __C_OGLCORE_CACHE_HANDLER_H_INCLUDED__
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#define __C_OGLCORE_CACHE_HANDLER_H_INCLUDED__
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#include "IrrCompileConfig.h"
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#if defined(_IRR_COMPILE_WITH_OPENGL_) || defined(_IRR_COMPILE_WITH_OGLES1_) || defined(_IRR_COMPILE_WITH_OGLES2_)
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#include "SMaterial.h"
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#include "ITexture.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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template <class TOpenGLDriver, class TOpenGLTexture>
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class COpenGLCoreCacheHandler
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{
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class STextureCache
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{
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public:
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STextureCache(COpenGLCoreCacheHandler* cacheHandler, u32 textureCount) :
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CacheHandler(cacheHandler), DriverType(cacheHandler->getDriverType()), TextureCount(textureCount)
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{
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for (u32 i = 0; i < MATERIAL_MAX_TEXTURES; ++i)
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{
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Texture[i] = 0;
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}
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}
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~STextureCache()
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{
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clear();
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}
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const TOpenGLTexture* operator[](int index) const
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{
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if (static_cast<u32>(index) < MATERIAL_MAX_TEXTURES)
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return Texture[static_cast<u32>(index)];
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return 0;
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}
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const TOpenGLTexture* get(u32 index) const
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{
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if (index < MATERIAL_MAX_TEXTURES)
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return Texture[index];
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return 0;
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}
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bool set(u32 index, const ITexture* texture)
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{
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bool status = false;
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E_DRIVER_TYPE type = DriverType;
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if (index < MATERIAL_MAX_TEXTURES && index < TextureCount)
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{
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CacheHandler->setActiveTexture(GL_TEXTURE0 + index);
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const TOpenGLTexture* prevTexture = Texture[index];
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if (texture != prevTexture)
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{
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if (texture)
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{
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type = texture->getDriverType();
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if (type == DriverType)
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{
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texture->grab();
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const TOpenGLTexture* curTexture = static_cast<const TOpenGLTexture*>(texture);
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const GLenum curTextureType = curTexture->getOpenGLTextureType();
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const GLenum prevTextureType = (prevTexture) ? prevTexture->getOpenGLTextureType() : curTextureType;
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if (curTextureType != prevTextureType)
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{
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glBindTexture(prevTextureType, 0);
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#if (defined(IRR_OPENGL_VERSION) && IRR_OPENGL_VERSION < 20) || (defined(IRR_OPENGL_ES_VERSION) && IRR_OPENGL_ES_VERSION < 20)
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glDisable(prevTextureType);
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glEnable(curTextureType);
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#endif
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}
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#if (defined(IRR_OPENGL_VERSION) && IRR_OPENGL_VERSION < 20) || (defined(IRR_OPENGL_ES_VERSION) && IRR_OPENGL_ES_VERSION < 20)
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else if (!prevTexture)
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glEnable(curTextureType);
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#endif
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glBindTexture(curTextureType, static_cast<const TOpenGLTexture*>(texture)->getOpenGLTextureName());
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}
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else
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{
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texture = 0;
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os::Printer::log("Fatal Error: Tried to set a texture not owned by this driver.", ELL_ERROR);
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}
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}
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if (!texture && prevTexture)
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{
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const GLenum prevTextureType = prevTexture->getOpenGLTextureType();
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glBindTexture(prevTextureType, 0);
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#if (defined(IRR_OPENGL_VERSION) && IRR_OPENGL_VERSION < 20) || (defined(IRR_OPENGL_ES_VERSION) && IRR_OPENGL_ES_VERSION < 20)
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glDisable(prevTextureType);
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#endif
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}
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Texture[index] = static_cast<const TOpenGLTexture*>(texture);
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if (prevTexture)
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prevTexture->drop();
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}
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status = true;
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}
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return (status && type == DriverType);
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}
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void remove(ITexture* texture)
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{
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if (!texture)
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return;
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for (u32 i = 0; i < MATERIAL_MAX_TEXTURES; ++i)
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{
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if (Texture[i] == texture)
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{
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Texture[i] = 0;
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texture->drop();
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}
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}
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}
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void clear()
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{
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for (u32 i = 0; i < MATERIAL_MAX_TEXTURES; ++i)
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{
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if (Texture[i])
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{
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const TOpenGLTexture* prevTexture = Texture[i];
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Texture[i] = 0;
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prevTexture->drop();
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}
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}
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}
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private:
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COpenGLCoreCacheHandler* CacheHandler;
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E_DRIVER_TYPE DriverType;
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const TOpenGLTexture* Texture[MATERIAL_MAX_TEXTURES];
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u32 TextureCount;
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};
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public:
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COpenGLCoreCacheHandler(TOpenGLDriver* driver) :
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Driver(driver), TextureCache(STextureCache(this, Driver->getFeature().TextureUnit)), FrameBufferCount(0),
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BlendEquation(0), BlendSourceRGB(0), BlendDestinationRGB(0), BlendSourceAlpha(0), BlendDestinationAlpha(0),
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Blend(0), ColorMask(0), CullFaceMode(GL_BACK), CullFace(false), DepthFunc(GL_LESS), DepthMask(true),
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DepthTest(false), FrameBufferID(0), ProgramID(0), ActiveTexture(GL_TEXTURE0), ViewportX(0), ViewportY(0)
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{
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const COpenGLCoreFeature& feature = Driver->getFeature();
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FrameBufferCount = core::max_(static_cast<GLuint>(1), static_cast<GLuint>(feature.MultipleRenderTarget));
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BlendEquation = new GLenum[FrameBufferCount];
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BlendSourceRGB = new GLenum[FrameBufferCount];
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BlendDestinationRGB = new GLenum[FrameBufferCount];
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BlendSourceAlpha = new GLenum[FrameBufferCount];
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BlendDestinationAlpha = new GLenum[FrameBufferCount];
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Blend = new bool[FrameBufferCount];
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ColorMask = new bool[FrameBufferCount][4];
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// Initial OpenGL values from specification.
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if (feature.BlendOperation)
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{
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Driver->irrGlBlendEquation(GL_FUNC_ADD);
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}
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for (u32 i = 0; i < FrameBufferCount; ++i)
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{
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BlendEquation[i] = GL_FUNC_ADD;
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BlendSourceRGB[i] = GL_ONE;
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BlendDestinationRGB[i] = GL_ZERO;
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BlendSourceAlpha[i] = GL_ONE;
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BlendDestinationAlpha[i] = GL_ZERO;
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Blend[i] = false;
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for (u32 j = 0; j < 4; ++j)
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ColorMask[i][j] = true;
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}
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glBlendFunc(GL_ONE, GL_ZERO);
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glDisable(GL_BLEND);
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glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
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glCullFace(CullFaceMode);
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glDisable(GL_CULL_FACE);
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glDepthFunc(DepthFunc);
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glDepthMask(GL_TRUE);
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glDisable(GL_DEPTH_TEST);
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Driver->irrGlActiveTexture(ActiveTexture);
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#if (defined(IRR_OPENGL_VERSION) && IRR_OPENGL_VERSION < 20) || (defined(IRR_OPENGL_ES_VERSION) && IRR_OPENGL_ES_VERSION < 20)
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glDisable(GL_TEXTURE_2D);
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#endif
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const core::dimension2d<u32> ScreenSize = Driver->getScreenSize();
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ViewportWidth = ScreenSize.Width;
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ViewportHeight = ScreenSize.Height;
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glViewport(ViewportX, ViewportY, ViewportWidth, ViewportHeight);
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}
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virtual ~COpenGLCoreCacheHandler()
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{
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delete[] BlendEquation;
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delete[] BlendSourceRGB;
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delete[] BlendDestinationRGB;
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delete[] BlendSourceAlpha;
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delete[] BlendDestinationAlpha;
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delete[] Blend;
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delete[] ColorMask;
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}
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E_DRIVER_TYPE getDriverType() const
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{
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return Driver->getDriverType();
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}
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STextureCache& getTextureCache()
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{
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return TextureCache;
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}
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// Blending calls.
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void setBlendEquation(GLenum mode)
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{
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if (BlendEquation[0] != mode)
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{
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Driver->irrGlBlendEquation(mode);
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for (GLuint i = 0; i < FrameBufferCount; ++i)
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BlendEquation[i] = mode;
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}
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}
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void setBlendEquationIndexed(GLuint index, GLenum mode)
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{
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if (index < FrameBufferCount && BlendEquation[index] != mode)
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{
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Driver->irrGlBlendEquationIndexed(index, mode);
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BlendEquation[index] = mode;
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}
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}
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void setBlendFunc(GLenum source, GLenum destination)
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{
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if (BlendSourceRGB[0] != source || BlendDestinationRGB[0] != destination ||
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BlendSourceAlpha[0] != source || BlendDestinationAlpha[0] != destination)
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{
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glBlendFunc(source, destination);
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for (GLuint i = 0; i < FrameBufferCount; ++i)
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{
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BlendSourceRGB[i] = source;
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BlendDestinationRGB[i] = destination;
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BlendSourceAlpha[i] = source;
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BlendDestinationAlpha[i] = destination;
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}
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}
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}
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void setBlendFuncSeparate(GLenum sourceRGB, GLenum destinationRGB, GLenum sourceAlpha, GLenum destinationAlpha)
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{
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if (sourceRGB != sourceAlpha || destinationRGB != destinationAlpha)
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{
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if (BlendSourceRGB[0] != sourceRGB || BlendDestinationRGB[0] != destinationRGB ||
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BlendSourceAlpha[0] != sourceAlpha || BlendDestinationAlpha[0] != destinationAlpha)
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{
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Driver->irrGlBlendFuncSeparate(sourceRGB, destinationRGB, sourceAlpha, destinationAlpha);
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for (GLuint i = 0; i < FrameBufferCount; ++i)
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{
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BlendSourceRGB[i] = sourceRGB;
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BlendDestinationRGB[i] = destinationRGB;
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BlendSourceAlpha[i] = sourceAlpha;
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BlendDestinationAlpha[i] = destinationAlpha;
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}
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}
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}
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else
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{
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setBlendFunc(sourceRGB, destinationRGB);
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}
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}
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void setBlendFuncIndexed(GLuint index, GLenum source, GLenum destination)
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{
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if (index < FrameBufferCount && (BlendSourceRGB[index] != source || BlendDestinationRGB[index] != destination ||
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BlendSourceAlpha[index] != source || BlendDestinationAlpha[index] != destination))
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{
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Driver->irrGlBlendFuncIndexed(index, source, destination);
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BlendSourceRGB[index] = source;
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BlendDestinationRGB[index] = destination;
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BlendSourceAlpha[index] = source;
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BlendDestinationAlpha[index] = destination;
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}
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}
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void setBlendFuncSeparateIndexed(GLuint index, GLenum sourceRGB, GLenum destinationRGB, GLenum sourceAlpha, GLenum destinationAlpha)
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{
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if (sourceRGB != sourceAlpha || destinationRGB != destinationAlpha)
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{
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if (index < FrameBufferCount && (BlendSourceRGB[index] != sourceRGB || BlendDestinationRGB[index] != destinationRGB ||
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BlendSourceAlpha[index] != sourceAlpha || BlendDestinationAlpha[index] != destinationAlpha))
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{
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Driver->irrGlBlendFuncSeparateIndexed(index, sourceRGB, destinationRGB, sourceAlpha, destinationAlpha);
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BlendSourceRGB[index] = sourceRGB;
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BlendDestinationRGB[index] = destinationRGB;
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BlendSourceAlpha[index] = sourceAlpha;
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BlendDestinationAlpha[index] = destinationAlpha;
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}
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}
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else
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{
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setBlendFuncIndexed(index, sourceRGB, destinationRGB);
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}
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}
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void setBlend(bool enable)
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{
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if (Blend[0] != enable)
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{
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if (enable)
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glEnable(GL_BLEND);
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else
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glDisable(GL_BLEND);
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for (GLuint i = 0; i < FrameBufferCount; ++i)
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Blend[i] = enable;
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}
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}
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void setBlendIndexed(GLuint index, bool enable)
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{
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if (index < FrameBufferCount && Blend[index] != enable)
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{
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if (enable)
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Driver->irrGlEnableIndexed(GL_BLEND, index);
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else
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Driver->irrGlDisableIndexed(GL_BLEND, index);
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Blend[index] = enable;
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}
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}
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// Color Mask.
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void setColorMask(bool red, bool green, bool blue, bool alpha)
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{
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if (ColorMask[0][0] != red || ColorMask[0][1] != green || ColorMask[0][2] != blue || ColorMask[0][3] != alpha)
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{
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glColorMask(red, green, blue, alpha);
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for (GLuint i = 0; i < FrameBufferCount; ++i)
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{
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ColorMask[i][0] = red;
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ColorMask[i][1] = green;
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ColorMask[i][2] = blue;
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ColorMask[i][3] = alpha;
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}
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}
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}
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void setColorMaskIndexed(GLuint index, bool red, bool green, bool blue, bool alpha)
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{
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if (index < FrameBufferCount && (ColorMask[index][0] != red || ColorMask[index][1] != green || ColorMask[index][2] != blue || ColorMask[index][3] != alpha))
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{
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Driver->irrGlColorMaskIndexed(index, red, green, blue, alpha);
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ColorMask[index][0] = red;
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ColorMask[index][1] = green;
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ColorMask[index][2] = blue;
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ColorMask[index][3] = alpha;
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}
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}
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// Cull face calls.
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void setCullFaceFunc(GLenum mode)
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{
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if (CullFaceMode != mode)
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{
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glCullFace(mode);
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CullFaceMode = mode;
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}
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}
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void setCullFace(bool enable)
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{
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if (CullFace != enable)
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{
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if (enable)
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glEnable(GL_CULL_FACE);
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else
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glDisable(GL_CULL_FACE);
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CullFace = enable;
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}
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}
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// Depth calls.
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void setDepthFunc(GLenum mode)
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{
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if (DepthFunc != mode)
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{
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glDepthFunc(mode);
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DepthFunc = mode;
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}
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}
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void setDepthMask(bool enable)
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{
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if (DepthMask != enable)
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{
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if (enable)
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glDepthMask(GL_TRUE);
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else
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glDepthMask(GL_FALSE);
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DepthMask = enable;
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}
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}
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void setDepthTest(bool enable)
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{
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if (DepthTest != enable)
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{
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if (enable)
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glEnable(GL_DEPTH_TEST);
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else
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glDisable(GL_DEPTH_TEST);
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DepthTest = enable;
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}
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}
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// FBO calls.
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void getFBO(GLuint& frameBufferID) const
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{
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frameBufferID = FrameBufferID;
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}
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void setFBO(GLuint frameBufferID)
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{
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if (FrameBufferID != frameBufferID)
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{
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Driver->irrGlBindFramebuffer(GL_FRAMEBUFFER, frameBufferID);
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FrameBufferID = frameBufferID;
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}
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}
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// Shaders calls.
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void getProgram(GLuint& programID) const
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{
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programID = ProgramID;
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}
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void setProgram(GLuint programID)
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{
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if (ProgramID != programID)
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{
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Driver->irrGlUseProgram(programID);
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ProgramID = programID;
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}
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}
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// Texture calls.
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void getActiveTexture(GLenum& texture) const
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{
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texture = ActiveTexture;
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}
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void setActiveTexture(GLenum texture)
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{
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if (ActiveTexture != texture)
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{
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Driver->irrGlActiveTexture(texture);
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ActiveTexture = texture;
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}
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}
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// Viewport calls.
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void getViewport(GLint& viewportX, GLint& viewportY, GLsizei& viewportWidth, GLsizei& viewportHeight) const
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{
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viewportX = ViewportX;
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viewportY = ViewportY;
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viewportWidth = ViewportWidth;
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viewportHeight = ViewportHeight;
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}
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void setViewport(GLint viewportX, GLint viewportY, GLsizei viewportWidth, GLsizei viewportHeight)
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{
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if (ViewportX != viewportX || ViewportY != viewportY || ViewportWidth != viewportWidth || ViewportHeight != viewportHeight)
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{
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glViewport(viewportX, viewportY, viewportWidth, viewportHeight);
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ViewportX = viewportX;
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ViewportY = viewportY;
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ViewportWidth = viewportWidth;
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ViewportHeight = viewportHeight;
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}
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}
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protected:
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TOpenGLDriver* Driver;
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STextureCache TextureCache;
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GLuint FrameBufferCount;
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GLenum* BlendEquation;
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GLenum* BlendSourceRGB;
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GLenum* BlendDestinationRGB;
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GLenum* BlendSourceAlpha;
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GLenum* BlendDestinationAlpha;
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bool* Blend;
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bool(*ColorMask)[4];
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GLenum CullFaceMode;
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bool CullFace;
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GLenum DepthFunc;
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bool DepthMask;
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bool DepthTest;
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GLuint FrameBufferID;
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GLuint ProgramID;
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GLenum ActiveTexture;
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GLint ViewportX;
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GLint ViewportY;
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GLsizei ViewportWidth;
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GLsizei ViewportHeight;
|
|
};
|
|
|
|
}
|
|
}
|
|
|
|
#endif
|
|
#endif
|