This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.
Last modified Mon Jul 27 2020 13:40:42
00001 /* 00002 ----------------------------------------------------------------------------- 00003 This source file is part of OGRE 00004 (Object-oriented Graphics Rendering Engine) 00005 For the latest info, see http://www.ogre3d.org 00006 00007 Copyright (c) 2000-2013 Torus Knot Software Ltd 00008 00009 Permission is hereby granted, free of charge, to any person obtaining a copy 00010 of this software and associated documentation files (the "Software"), to deal 00011 in the Software without restriction, including without limitation the rights 00012 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 00013 copies of the Software, and to permit persons to whom the Software is 00014 furnished to do so, subject to the following conditions: 00015 00016 The above copyright notice and this permission notice shall be included in 00017 all copies or substantial portions of the Software. 00018 00019 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 00020 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 00021 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 00022 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 00023 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 00024 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 00025 THE SOFTWARE. 00026 ----------------------------------------------------------------------------- 00027 */ 00028 00029 #ifndef __GLES2RenderSystem_H__ 00030 #define __GLES2RenderSystem_H__ 00031 00032 #include "OgreGLES2Prerequisites.h" 00033 00034 #include "OgreMaterialManager.h" 00035 #include "OgreRenderSystem.h" 00036 #include "OgreGLES2GpuProgram.h" 00037 00038 namespace Ogre { 00039 class GLES2Context; 00040 class GLES2Support; 00041 class GLES2RTTManager; 00042 class GLES2GpuProgramManager; 00043 class GLSLESProgramFactory; 00044 class GLES2StateCacheManager; 00045 #if !OGRE_NO_GLES2_CG_SUPPORT 00046 class GLSLESCgProgramFactory; 00047 #endif 00048 class GLSLESGpuProgram; 00049 class HardwareBufferManager; 00050 #if OGRE_PLATFORM == OGRE_PLATFORM_ANDROID 00051 class AndroidResourceManager; 00052 #endif 00053 00057 class _OgreGLES2Export GLES2RenderSystem : public RenderSystem 00058 { 00059 private: 00061 Matrix4 mViewMatrix; 00062 Matrix4 mWorldMatrix; 00063 Matrix4 mTextureMatrix; 00064 00066 FilterOptions mMinFilter; 00067 FilterOptions mMipFilter; 00068 00070 size_t mTextureCoordIndex[OGRE_MAX_TEXTURE_LAYERS]; 00071 00073 GLenum mTextureTypes[OGRE_MAX_TEXTURE_LAYERS]; 00074 00076 unsigned short mFixedFunctionTextureUnits; 00077 00078 GLfloat mAutoTextureMatrix[16]; 00079 00080 bool mUseAutoTextureMatrix; 00081 00083 GLES2Support *mGLSupport; 00084 00086 GLES2StateCacheManager* mStateCacheManager; 00087 00088 /* The main GL context - main thread only */ 00089 GLES2Context *mMainContext; 00090 00091 /* The current GL context - main thread only */ 00092 GLES2Context *mCurrentContext; 00093 00094 typedef list<GLES2Context*>::type GLES2ContextList; 00096 GLES2ContextList mBackgroundContextList; 00097 00098 GLES2GpuProgramManager *mGpuProgramManager; 00099 GLSLESProgramFactory* mGLSLESProgramFactory; 00100 #if !OGRE_NO_GLES2_CG_SUPPORT 00101 GLSLESCgProgramFactory* mGLSLESCgProgramFactory; 00102 #endif 00103 HardwareBufferManager* mHardwareBufferManager; 00104 00110 GLES2RTTManager *mRTTManager; 00111 00113 bool mGLInitialised; 00114 00115 // local data member of _render that were moved here to improve performance 00116 // (save allocations) 00117 vector<GLuint>::type mRenderAttribsBound; 00118 vector<GLuint>::type mRenderInstanceAttribsBound; 00119 00120 GLint getCombinedMinMipFilter(void) const; 00121 00122 GLES2GpuProgram* mCurrentVertexProgram; 00123 GLES2GpuProgram* mCurrentFragmentProgram; 00124 00125 GLint getTextureAddressingMode(TextureUnitState::TextureAddressingMode tam) const; 00126 GLenum getBlendMode(SceneBlendFactor ogreBlend) const; 00127 void bindVertexElementToGpu( const VertexElement &elem, HardwareVertexBufferSharedPtr vertexBuffer, 00128 const size_t vertexStart, 00129 vector<GLuint>::type &attribsBound, 00130 vector<GLuint>::type &instanceAttribsBound, 00131 bool updateVAO); 00132 00133 // Mipmap count of the actual bounded texture 00134 size_t mCurTexMipCount; 00135 GLint mViewport[4]; 00136 GLint mScissor[4]; 00137 00138 public: 00139 // Default constructor / destructor 00140 GLES2RenderSystem(); 00141 virtual ~GLES2RenderSystem(); 00142 00143 friend class ShaderGeneratorTechniqueResolverListener; 00144 00145 // ---------------------------------- 00146 // Overridden RenderSystem functions 00147 // ---------------------------------- 00151 const String& getName(void) const; 00155 ConfigOptionMap& getConfigOptions(void); 00159 void setConfigOption(const String &name, const String &value); 00163 String validateConfigOptions(void); 00167 RenderWindow* _initialise(bool autoCreateWindow, const String& windowTitle = "OGRE Render NativeWindowType"); 00171 virtual RenderSystemCapabilities* createRenderSystemCapabilities() const; 00175 void initialiseFromRenderSystemCapabilities(RenderSystemCapabilities* caps, RenderTarget* primary); 00179 void reinitialise(void); // Used if settings changed mid-rendering 00183 void shutdown(void); 00187 void setAmbientLight(float r, float g, float b) { }; // Not supported 00191 void setShadingType(ShadeOptions so) { }; // Not supported 00195 void setLightingEnabled(bool enabled) { }; // Not supported 00196 00198 RenderWindow* _createRenderWindow(const String &name, unsigned int width, unsigned int height, 00199 bool fullScreen, const NameValuePairList *miscParams = 0); 00200 00202 DepthBuffer* _createDepthBufferFor( RenderTarget *renderTarget ); 00203 00205 void _getDepthStencilFormatFor( GLenum internalColourFormat, GLenum *depthFormat, 00206 GLenum *stencilFormat ); 00207 00209 virtual MultiRenderTarget * createMultiRenderTarget(const String & name); 00210 00214 void destroyRenderWindow(RenderWindow* pWin); 00218 String getErrorDescription(long errorNumber) const; 00222 VertexElementType getColourVertexElementType(void) const; 00226 void setNormaliseNormals(bool normalise) { }; // Not supported 00227 00228 // ----------------------------- 00229 // Low-level overridden members 00230 // ----------------------------- 00234 void _useLights(const LightList& lights, unsigned short limit) { }; // Not supported 00238 bool areFixedFunctionLightsInViewSpace() const { return true; } 00242 void _setWorldMatrix(const Matrix4 &m); 00246 void _setViewMatrix(const Matrix4 &m); 00250 void _setProjectionMatrix(const Matrix4 &m); 00254 void _setSurfaceParams(const ColourValue &ambient, 00255 const ColourValue &diffuse, const ColourValue &specular, 00256 const ColourValue &emissive, Real shininess, 00257 TrackVertexColourType tracking) {} 00261 void _setPointParameters(Real size, bool attenuationEnabled, 00262 Real constant, Real linear, Real quadratic, Real minSize, Real maxSize) {} 00266 void _setPointSpritesEnabled(bool enabled) {} 00270 void _setTexture(size_t unit, bool enabled, const TexturePtr &tex); 00274 void _setTextureCoordSet(size_t stage, size_t index); 00278 void _setTextureCoordCalculation(size_t stage, TexCoordCalcMethod m, 00279 const Frustum* frustum = 0) { }; // Not supported 00283 void _setTextureBlendMode(size_t stage, const LayerBlendModeEx& bm) { }; // Not supported 00287 void _setTextureAddressingMode(size_t stage, const TextureUnitState::UVWAddressingMode& uvw); 00291 void _setTextureBorderColour(size_t stage, const ColourValue& colour) { }; // Not supported 00295 void _setTextureMipmapBias(size_t unit, float bias) { }; // Not supported 00299 void _setTextureMatrix(size_t stage, const Matrix4& xform) { }; // Not supported 00303 void _setViewport(Viewport *vp); 00307 void _beginFrame(void); 00311 void _endFrame(void); 00315 void _setCullingMode(CullingMode mode); 00319 void _setDepthBufferParams(bool depthTest = true, bool depthWrite = true, CompareFunction depthFunction = CMPF_LESS_EQUAL); 00323 void _setDepthBufferCheckEnabled(bool enabled = true); 00327 void _setDepthBufferWriteEnabled(bool enabled = true); 00331 void _setDepthBufferFunction(CompareFunction func = CMPF_LESS_EQUAL); 00335 void _setDepthBias(float constantBias, float slopeScaleBias); 00339 void _setColourBufferWriteEnabled(bool red, bool green, bool blue, bool alpha); 00343 void _setFog(FogMode mode, const ColourValue& colour, Real density, Real start, Real end); 00347 void _convertProjectionMatrix(const Matrix4& matrix, 00348 Matrix4& dest, bool forGpuProgram = false); 00352 void _makeProjectionMatrix(const Radian& fovy, Real aspect, Real nearPlane, Real farPlane, 00353 Matrix4& dest, bool forGpuProgram = false); 00357 void _makeProjectionMatrix(Real left, Real right, Real bottom, Real top, 00358 Real nearPlane, Real farPlane, Matrix4& dest, bool forGpuProgram = false); 00362 void _makeOrthoMatrix(const Radian& fovy, Real aspect, Real nearPlane, Real farPlane, 00363 Matrix4& dest, bool forGpuProgram = false); 00367 void _applyObliqueDepthProjection(Matrix4& matrix, const Plane& plane, 00368 bool forGpuProgram); 00372 void setClipPlane (ushort index, Real A, Real B, Real C, Real D); 00376 void enableClipPlane (ushort index, bool enable); 00380 void _setPolygonMode(PolygonMode level); 00384 void setStencilCheckEnabled(bool enabled); 00388 void setStencilBufferParams(CompareFunction func = CMPF_ALWAYS_PASS, 00389 uint32 refValue = 0, uint32 compareMask = 0xFFFFFFFF, uint32 writeMask = 0xFFFFFFFF, 00390 StencilOperation stencilFailOp = SOP_KEEP, 00391 StencilOperation depthFailOp = SOP_KEEP, 00392 StencilOperation passOp = SOP_KEEP, 00393 bool twoSidedOperation = false); 00397 void _setTextureUnitCompareFunction(size_t unit, CompareFunction function); 00401 void _setTextureUnitCompareEnabled(size_t unit, bool compare); 00405 virtual void _setTextureUnitFiltering(size_t unit, FilterOptions minFilter, 00406 FilterOptions magFilter, FilterOptions mipFilter); 00410 void _setTextureUnitFiltering(size_t unit, FilterType ftype, FilterOptions filter); 00414 void _setTextureLayerAnisotropy(size_t unit, unsigned int maxAnisotropy); 00418 virtual bool hasAnisotropicMipMapFilter() const { return false; } 00422 void setVertexDeclaration(VertexDeclaration* decl); 00426 void setVertexDeclaration(VertexDeclaration* decl, VertexBufferBinding* binding); 00430 void setVertexBufferBinding(VertexBufferBinding* binding) {} 00434 void _render(const RenderOperation& op); 00438 void setScissorTest(bool enabled, size_t left = 0, size_t top = 0, size_t right = 800, size_t bottom = 600); 00439 00440 void clearFrameBuffer(unsigned int buffers, 00441 const ColourValue& colour = ColourValue::Black, 00442 Real depth = 1.0f, unsigned short stencil = 0); 00443 HardwareOcclusionQuery* createHardwareOcclusionQuery(void); 00444 Real getHorizontalTexelOffset(void) { return 0.0; } // No offset in GL 00445 Real getVerticalTexelOffset(void) { return 0.0; } // No offset in GL 00446 Real getMinimumDepthInputValue(void) { return -1.0f; } // Range [-1.0f, 1.0f] 00447 Real getMaximumDepthInputValue(void) { return 1.0f; } // Range [-1.0f, 1.0f] 00448 OGRE_MUTEX(mThreadInitMutex); 00449 void registerThread(); 00450 void unregisterThread(); 00451 void preExtraThreadsStarted(); 00452 void postExtraThreadsStarted(); 00453 void setClipPlanesImpl(const Ogre::PlaneList& planeList) {} 00454 GLES2Support* getGLSupportRef() { return mGLSupport; } 00455 00456 // ---------------------------------- 00457 // GLES2RenderSystem specific members 00458 // ---------------------------------- 00460 GLES2Context* _getMainContext() { return mMainContext; } 00468 void _unregisterContext(GLES2Context *context); 00471 void _switchContext(GLES2Context *context); 00475 void _oneTimeContextInitialization(); 00476 void initialiseContext(RenderWindow* primary); 00480 void _setRenderTarget(RenderTarget *target); 00481 00482 GLES2Support* getGLES2Support() { return mGLSupport; } 00483 GLint convertCompareFunction(CompareFunction func) const; 00484 GLint convertStencilOp(StencilOperation op, bool invert = false) const; 00485 00486 void bindGpuProgram(GpuProgram* prg); 00487 void unbindGpuProgram(GpuProgramType gptype); 00488 void bindGpuProgramParameters(GpuProgramType gptype, GpuProgramParametersSharedPtr params, uint16 mask); 00489 void bindGpuProgramPassIterationParameters(GpuProgramType gptype); 00490 00492 void _setSceneBlending( SceneBlendFactor sourceFactor, SceneBlendFactor destFactor, SceneBlendOperation op ); 00494 void _setSeparateSceneBlending( SceneBlendFactor sourceFactor, SceneBlendFactor destFactor, SceneBlendFactor sourceFactorAlpha, SceneBlendFactor destFactorAlpha, SceneBlendOperation op, SceneBlendOperation alphaOp ); 00496 void _setAlphaRejectSettings( CompareFunction func, unsigned char value, bool alphaToCoverage ); 00498 unsigned int getDisplayMonitorCount() const; 00499 00501 GLfloat _getCurrentAnisotropy(size_t unit); 00502 00503 void _setSceneBlendingOperation(SceneBlendOperation op); 00504 void _setSeparateSceneBlendingOperation(SceneBlendOperation op, SceneBlendOperation alphaOp); 00505 00506 unsigned int getDiscardBuffers(void); 00507 00508 void _destroyDepthBuffer(RenderWindow* pRenderWnd); 00509 00511 virtual void beginProfileEvent( const String &eventName ); 00512 00514 virtual void endProfileEvent( void ); 00515 00517 virtual void markProfileEvent( const String &eventName ); 00518 00519 #if OGRE_PLATFORM == OGRE_PLATFORM_ANDROID 00520 void resetRenderer(RenderWindow* pRenderWnd); 00521 00522 static AndroidResourceManager* getResourceManager(); 00523 private: 00524 static AndroidResourceManager* mResourceManager; 00525 #endif 00526 }; 00527 } 00528 00529 #endif
Copyright © 2012 Torus Knot Software Ltd
This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.
Last modified Mon Jul 27 2020 13:40:42