mirror of https://github.com/minetest/irrlicht.git
596 lines
15 KiB
C++
596 lines
15 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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#pragma once
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#include "SMaterial.h"
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#include "ITexture.h"
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#include "mt_opengl.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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enum ESetTextureActive
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{
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EST_ACTIVE_ALWAYS, // texture unit always active after set call
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EST_ACTIVE_ON_CHANGE // texture unit only active after call when texture changed in cache
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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, E_DRIVER_TYPE driverType, u32 textureCount) :
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CacheHandler(cacheHandler), DriverType(driverType), TextureCount(textureCount)
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{
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for (u32 i = 0; i < MATERIAL_MAX_TEXTURES; ++i) {
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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, ESetTextureActive esa = EST_ACTIVE_ALWAYS)
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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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if (esa == EST_ACTIVE_ALWAYS)
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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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if (esa == EST_ACTIVE_ON_CHANGE)
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CacheHandler.setActiveTexture(GL_TEXTURE0 + index);
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if (texture) {
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type = texture->getDriverType();
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if (type == DriverType) {
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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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GL.BindTexture(prevTextureType, 0);
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#if (defined(IRR_COMPILE_GL_COMMON) || defined(IRR_COMPILE_GLES_COMMON))
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GL.Disable(prevTextureType);
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GL.Enable(curTextureType);
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#endif
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}
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#if (defined(IRR_COMPILE_GL_COMMON) || defined(IRR_COMPILE_GLES_COMMON))
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else if (!prevTexture)
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GL.Enable(curTextureType);
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#endif
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GL.BindTexture(curTextureType, static_cast<const TOpenGLTexture *>(texture)->getOpenGLTextureName());
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} else {
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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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os::Printer::log("Texture type", irr::core::stringc((int)type), ELL_ERROR);
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os::Printer::log("Driver (or cache handler) type", irr::core::stringc((int)DriverType), ELL_ERROR);
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}
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}
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if (!texture && prevTexture) {
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const GLenum prevTextureType = prevTexture->getOpenGLTextureType();
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GL.BindTexture(prevTextureType, 0);
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#if (defined(IRR_COMPILE_GL_COMMON) || defined(IRR_COMPILE_GLES_COMMON))
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GL.Disable(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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if (Texture[i] == texture) {
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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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if (Texture[i]) {
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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),
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#if defined(_MSC_VER)
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#pragma warning(push)
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#pragma warning(disable : 4355) // Warning: "'this' : used in base member initializer list. ". It's OK, we don't use the reference in STextureCache constructor.
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#endif
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TextureCache(STextureCache(*this, driver->getDriverType(), driver->getFeature().MaxTextureUnits)),
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#if defined(_MSC_VER)
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#pragma warning(pop)
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#endif
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FrameBufferCount(0), BlendEquation(0), BlendSourceRGB(0),
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BlendDestinationRGB(0), BlendSourceAlpha(0), BlendDestinationAlpha(0), Blend(0), BlendEquationInvalid(false), BlendFuncInvalid(false), BlendInvalid(false),
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ColorMask(0), ColorMaskInvalid(false), CullFaceMode(GL_BACK), CullFace(false), DepthFunc(GL_LESS), DepthMask(true), DepthTest(false), FrameBufferID(0),
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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 u8[FrameBufferCount];
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// Initial OpenGL values from specification.
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if (feature.BlendOperation) {
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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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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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ColorMask[i] = ECP_ALL;
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}
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GL.BlendFunc(GL_ONE, GL_ZERO);
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GL.Disable(GL_BLEND);
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GL.ColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
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GL.CullFace(CullFaceMode);
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GL.Disable(GL_CULL_FACE);
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GL.DepthFunc(DepthFunc);
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GL.DepthMask(GL_TRUE);
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GL.Disable(GL_DEPTH_TEST);
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Driver->irrGlActiveTexture(ActiveTexture);
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#if (defined(IRR_COMPILE_GL_COMMON) || defined(IRR_COMPILE_GLES_COMMON))
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GL.Disable(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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GL.Viewport(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 || BlendEquationInvalid) {
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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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BlendEquationInvalid = false;
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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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Driver->irrGlBlendEquationIndexed(index, mode);
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BlendEquation[index] = mode;
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BlendEquationInvalid = true;
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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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BlendFuncInvalid) {
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GL.BlendFunc(source, destination);
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for (GLuint i = 0; i < FrameBufferCount; ++i) {
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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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BlendFuncInvalid = false;
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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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if (BlendSourceRGB[0] != sourceRGB || BlendDestinationRGB[0] != destinationRGB ||
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BlendSourceAlpha[0] != sourceAlpha || BlendDestinationAlpha[0] != destinationAlpha ||
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BlendFuncInvalid) {
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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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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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BlendFuncInvalid = false;
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}
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} else {
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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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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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BlendFuncInvalid = true;
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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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if (index < FrameBufferCount && (BlendSourceRGB[index] != sourceRGB || BlendDestinationRGB[index] != destinationRGB ||
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BlendSourceAlpha[index] != sourceAlpha || BlendDestinationAlpha[index] != destinationAlpha)) {
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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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BlendFuncInvalid = true;
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}
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} else {
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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 || BlendInvalid) {
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if (enable)
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GL.Enable(GL_BLEND);
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else
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GL.Disable(GL_BLEND);
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for (GLuint i = 0; i < FrameBufferCount; ++i)
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Blend[i] = enable;
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BlendInvalid = false;
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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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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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BlendInvalid = true;
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}
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}
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// Color Mask.
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void getColorMask(u8 &mask)
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{
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mask = ColorMask[0];
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}
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void setColorMask(u8 mask)
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{
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if (ColorMask[0] != mask || ColorMaskInvalid) {
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GL.ColorMask((mask & ECP_RED) ? GL_TRUE : GL_FALSE, (mask & ECP_GREEN) ? GL_TRUE : GL_FALSE, (mask & ECP_BLUE) ? GL_TRUE : GL_FALSE, (mask & ECP_ALPHA) ? GL_TRUE : GL_FALSE);
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for (GLuint i = 0; i < FrameBufferCount; ++i)
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ColorMask[i] = mask;
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ColorMaskInvalid = false;
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}
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}
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void setColorMaskIndexed(GLuint index, u8 mask)
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{
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if (index < FrameBufferCount && ColorMask[index] != mask) {
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Driver->irrGlColorMaskIndexed(index, (mask & ECP_RED) ? GL_TRUE : GL_FALSE, (mask & ECP_GREEN) ? GL_TRUE : GL_FALSE, (mask & ECP_BLUE) ? GL_TRUE : GL_FALSE, (mask & ECP_ALPHA) ? GL_TRUE : GL_FALSE);
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ColorMask[index] = mask;
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ColorMaskInvalid = true;
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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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GL.CullFace(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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if (enable)
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GL.Enable(GL_CULL_FACE);
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else
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GL.Disable(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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GL.DepthFunc(mode);
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DepthFunc = mode;
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}
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}
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void getDepthMask(bool &depth)
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{
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depth = DepthMask;
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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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if (enable)
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GL.DepthMask(GL_TRUE);
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else
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GL.DepthMask(GL_FALSE);
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DepthMask = enable;
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}
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}
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void getDepthTest(bool &enable)
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{
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enable = DepthTest;
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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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if (enable)
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GL.Enable(GL_DEPTH_TEST);
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else
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GL.Disable(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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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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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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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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GL.Viewport(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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//! Compare material to current cache and update it when there are differences
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// Some material renderers do change the cache beyond the original material settings
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// This corrects the material to represent the current cache state again.
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void correctCacheMaterial(irr::video::SMaterial &material)
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{
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// Fix textures which got removed
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for (u32 i = 0; i < MATERIAL_MAX_TEXTURES; ++i) {
|
|
if (material.TextureLayers[i].Texture && !TextureCache[i]) {
|
|
material.TextureLayers[i].Texture = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
protected:
|
|
TOpenGLDriver *Driver;
|
|
|
|
STextureCache TextureCache;
|
|
|
|
GLuint FrameBufferCount;
|
|
|
|
GLenum *BlendEquation;
|
|
GLenum *BlendSourceRGB;
|
|
GLenum *BlendDestinationRGB;
|
|
GLenum *BlendSourceAlpha;
|
|
GLenum *BlendDestinationAlpha;
|
|
bool *Blend;
|
|
bool BlendEquationInvalid;
|
|
bool BlendFuncInvalid;
|
|
bool BlendInvalid;
|
|
|
|
u8 *ColorMask;
|
|
bool ColorMaskInvalid;
|
|
|
|
GLenum CullFaceMode;
|
|
bool CullFace;
|
|
|
|
GLenum DepthFunc;
|
|
bool DepthMask;
|
|
bool DepthTest;
|
|
|
|
GLuint FrameBufferID;
|
|
|
|
GLuint ProgramID;
|
|
|
|
GLenum ActiveTexture;
|
|
|
|
GLint ViewportX;
|
|
GLint ViewportY;
|
|
GLsizei ViewportWidth;
|
|
GLsizei ViewportHeight;
|
|
};
|
|
|
|
}
|
|
}
|