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) 2000-2012 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 #if !OGRE_NO_GLES2_CG_SUPPORT 00045 class GLSLESCgProgramFactory; 00046 #endif 00047 class GLSLESGpuProgram; 00048 class HardwareBufferManager; 00049 00053 class _OgreGLES2Export GLES2RenderSystem : public RenderSystem 00054 { 00055 private: 00056 typedef HashMap<GLenum, GLuint> BindBufferMap; 00057 00059 Matrix4 mViewMatrix; 00060 Matrix4 mWorldMatrix; 00061 Matrix4 mTextureMatrix; 00062 00064 FilterOptions mMinFilter; 00065 FilterOptions mMipFilter; 00066 00068 size_t mTextureCoordIndex[OGRE_MAX_TEXTURE_LAYERS]; 00069 00071 GLenum mTextureTypes[OGRE_MAX_TEXTURE_LAYERS]; 00072 00074 unsigned short mFixedFunctionTextureUnits; 00075 00077 bool mColourWrite[4]; 00078 00080 bool mDepthWrite; 00081 00083 uint32 mStencilMask; 00084 00085 GLfloat mAutoTextureMatrix[16]; 00086 00087 bool mUseAutoTextureMatrix; 00088 00090 GLES2Support *mGLSupport; 00091 00092 /* The main GL context - main thread only */ 00093 GLES2Context *mMainContext; 00094 00095 /* The current GL context - main thread only */ 00096 GLES2Context *mCurrentContext; 00097 GLES2GpuProgramManager *mGpuProgramManager; 00098 GLSLESProgramFactory* mGLSLESProgramFactory; 00099 #if !OGRE_NO_GLES2_CG_SUPPORT 00100 GLSLESCgProgramFactory* mGLSLESCgProgramFactory; 00101 #endif 00102 HardwareBufferManager* mHardwareBufferManager; 00103 00109 GLES2RTTManager *mRTTManager; 00110 00115 GLenum mActiveTextureUnit; 00116 BindBufferMap mActiveBufferMap; 00117 00119 bool mGLInitialised; 00120 00122 unsigned int mDiscardBuffers; 00123 00127 GLenum mPolygonMode; 00128 00129 // local data member of _render that were moved here to improve performance 00130 // (save allocations) 00131 vector<GLuint>::type mRenderAttribsBound; 00132 00133 GLint getCombinedMinMipFilter(void) const; 00134 00135 GLES2GpuProgram* mCurrentVertexProgram; 00136 GLES2GpuProgram* mCurrentFragmentProgram; 00137 00138 GLint getTextureAddressingMode(TextureUnitState::TextureAddressingMode tam) const; 00139 GLenum getBlendMode(SceneBlendFactor ogreBlend) const; 00140 00141 bool activateGLTextureUnit(size_t unit); 00142 00143 public: 00144 // Default constructor / destructor 00145 GLES2RenderSystem(); 00146 virtual ~GLES2RenderSystem(); 00147 00148 friend class ShaderGeneratorTechniqueResolverListener; 00149 00150 // ---------------------------------- 00151 // Overridden RenderSystem functions 00152 // ---------------------------------- 00156 const String& getName(void) const; 00160 ConfigOptionMap& getConfigOptions(void); 00164 void setConfigOption(const String &name, const String &value); 00168 String validateConfigOptions(void); 00172 RenderWindow* _initialise(bool autoCreateWindow, const String& windowTitle = "OGRE Render NativeWindowType"); 00176 virtual RenderSystemCapabilities* createRenderSystemCapabilities() const; 00180 void initialiseFromRenderSystemCapabilities(RenderSystemCapabilities* caps, RenderTarget* primary); 00184 void reinitialise(void); // Used if settings changed mid-rendering 00188 void shutdown(void); 00192 void setAmbientLight(float r, float g, float b) { }; // Not supported 00196 void setShadingType(ShadeOptions so) { }; // Not supported 00200 void setLightingEnabled(bool enabled) { }; // Not supported 00201 00203 RenderWindow* _createRenderWindow(const String &name, unsigned int width, unsigned int height, 00204 bool fullScreen, const NameValuePairList *miscParams = 0); 00205 00207 DepthBuffer* _createDepthBufferFor( RenderTarget *renderTarget ); 00208 00210 void _getDepthStencilFormatFor( GLenum internalColourFormat, GLenum *depthFormat, 00211 GLenum *stencilFormat ); 00212 00214 virtual MultiRenderTarget * createMultiRenderTarget(const String & name); 00215 00219 void destroyRenderWindow(RenderWindow* pWin); 00223 String getErrorDescription(long errorNumber) const; 00227 VertexElementType getColourVertexElementType(void) const; 00231 void setNormaliseNormals(bool normalise) { }; // Not supported 00232 00233 // ----------------------------- 00234 // Low-level overridden members 00235 // ----------------------------- 00239 void _useLights(const LightList& lights, unsigned short limit) { }; // Not supported 00243 bool areFixedFunctionLightsInViewSpace() const { return true; } 00247 void _setWorldMatrix(const Matrix4 &m); 00251 void _setViewMatrix(const Matrix4 &m); 00255 void _setProjectionMatrix(const Matrix4 &m); 00259 void _setSurfaceParams(const ColourValue &ambient, 00260 const ColourValue &diffuse, const ColourValue &specular, 00261 const ColourValue &emissive, Real shininess, 00262 TrackVertexColourType tracking) {} 00266 void _setPointParameters(Real size, bool attenuationEnabled, 00267 Real constant, Real linear, Real quadratic, Real minSize, Real maxSize) {} 00271 void _setPointSpritesEnabled(bool enabled) {} 00275 void _setTexture(size_t unit, bool enabled, const TexturePtr &tex); 00279 void _setTextureCoordSet(size_t stage, size_t index); 00283 void _setTextureCoordCalculation(size_t stage, TexCoordCalcMethod m, 00284 const Frustum* frustum = 0) { }; // Not supported 00288 void _setTextureBlendMode(size_t stage, const LayerBlendModeEx& bm) { }; // Not supported 00292 void _setTextureAddressingMode(size_t stage, const TextureUnitState::UVWAddressingMode& uvw); 00296 void _setTextureBorderColour(size_t stage, const ColourValue& colour) { }; // Not supported 00300 void _setTextureMipmapBias(size_t unit, float bias) { }; // Not supported 00304 void _setTextureMatrix(size_t stage, const Matrix4& xform) { }; // Not supported 00308 void _setViewport(Viewport *vp); 00312 void _beginFrame(void); 00316 void _endFrame(void); 00320 void _setCullingMode(CullingMode mode); 00324 void _setDepthBufferParams(bool depthTest = true, bool depthWrite = true, CompareFunction depthFunction = CMPF_LESS_EQUAL); 00328 void _setDepthBufferCheckEnabled(bool enabled = true); 00332 void _setDepthBufferWriteEnabled(bool enabled = true); 00336 void _setDepthBufferFunction(CompareFunction func = CMPF_LESS_EQUAL); 00340 void _setDepthBias(float constantBias, float slopeScaleBias); 00344 void _setColourBufferWriteEnabled(bool red, bool green, bool blue, bool alpha); 00348 void _setFog(FogMode mode, const ColourValue& colour, Real density, Real start, Real end); 00352 void _convertProjectionMatrix(const Matrix4& matrix, 00353 Matrix4& dest, bool forGpuProgram = false); 00357 void _makeProjectionMatrix(const Radian& fovy, Real aspect, Real nearPlane, Real farPlane, 00358 Matrix4& dest, bool forGpuProgram = false); 00362 void _makeProjectionMatrix(Real left, Real right, Real bottom, Real top, 00363 Real nearPlane, Real farPlane, Matrix4& dest, bool forGpuProgram = false); 00367 void _makeOrthoMatrix(const Radian& fovy, Real aspect, Real nearPlane, Real farPlane, 00368 Matrix4& dest, bool forGpuProgram = false); 00372 void _applyObliqueDepthProjection(Matrix4& matrix, const Plane& plane, 00373 bool forGpuProgram); 00377 void setClipPlane (ushort index, Real A, Real B, Real C, Real D); 00381 void enableClipPlane (ushort index, bool enable); 00385 void _setPolygonMode(PolygonMode level); 00389 void setStencilCheckEnabled(bool enabled); 00393 void setStencilBufferParams(CompareFunction func = CMPF_ALWAYS_PASS, 00394 uint32 refValue = 0, uint32 mask = 0xFFFFFFFF, 00395 StencilOperation stencilFailOp = SOP_KEEP, 00396 StencilOperation depthFailOp = SOP_KEEP, 00397 StencilOperation passOp = SOP_KEEP, 00398 bool twoSidedOperation = false); 00402 void _setTextureUnitFiltering(size_t unit, FilterType ftype, FilterOptions filter); 00406 void _setTextureLayerAnisotropy(size_t unit, unsigned int maxAnisotropy); 00410 void setVertexDeclaration(VertexDeclaration* decl) {} 00414 void setVertexBufferBinding(VertexBufferBinding* binding) {} 00418 void _render(const RenderOperation& op); 00422 void setScissorTest(bool enabled, size_t left = 0, size_t top = 0, size_t right = 800, size_t bottom = 600); 00423 00424 void _setDiscardBuffers(unsigned int flags) { mDiscardBuffers = flags; } 00425 unsigned int getDiscardBuffers(void) { return mDiscardBuffers; } 00426 00427 void clearFrameBuffer(unsigned int buffers, 00428 const ColourValue& colour = ColourValue::Black, 00429 Real depth = 1.0f, unsigned short stencil = 0); 00430 HardwareOcclusionQuery* createHardwareOcclusionQuery(void); 00431 Real getHorizontalTexelOffset(void) { return 0.0; } // No offset in GL 00432 Real getVerticalTexelOffset(void) { return 0.0; } // No offset in GL 00433 Real getMinimumDepthInputValue(void) { return -1.0f; } // Range [-1.0f, 1.0f] 00434 Real getMaximumDepthInputValue(void) { return 1.0f; } // Range [-1.0f, 1.0f] 00435 void registerThread() {} 00436 void unregisterThread() {} 00437 void preExtraThreadsStarted() {} 00438 void postExtraThreadsStarted() {} 00439 void setClipPlanesImpl(const Ogre::PlaneList& planeList) {} 00440 00441 // ---------------------------------- 00442 // GLES2RenderSystem specific members 00443 // ---------------------------------- 00445 GLES2Context* _getMainContext() { return mMainContext; } 00453 void _unregisterContext(GLES2Context *context); 00456 void _switchContext(GLES2Context *context); 00460 void _oneTimeContextInitialization(); 00461 void initialiseContext(RenderWindow* primary); 00465 void _setRenderTarget(RenderTarget *target); 00466 00467 GLES2Support* getGLES2Support() { return mGLSupport; } 00468 GLint convertCompareFunction(CompareFunction func) const; 00469 GLint convertStencilOp(StencilOperation op, bool invert = false) const; 00470 00471 void bindGpuProgram(GpuProgram* prg); 00472 void unbindGpuProgram(GpuProgramType gptype); 00473 void bindGpuProgramParameters(GpuProgramType gptype, GpuProgramParametersSharedPtr params, uint16 mask); 00474 void bindGpuProgramPassIterationParameters(GpuProgramType gptype); 00475 00477 void _setSceneBlending( SceneBlendFactor sourceFactor, SceneBlendFactor destFactor, SceneBlendOperation op ); 00479 void _setSeparateSceneBlending( SceneBlendFactor sourceFactor, SceneBlendFactor destFactor, SceneBlendFactor sourceFactorAlpha, SceneBlendFactor destFactorAlpha, SceneBlendOperation op, SceneBlendOperation alphaOp ); 00481 void _setAlphaRejectSettings( CompareFunction func, unsigned char value, bool alphaToCoverage ); 00483 unsigned int getDisplayMonitorCount() const; 00484 00486 GLfloat _getCurrentAnisotropy(size_t unit); 00487 00488 GLenum _getPolygonMode(void) { return mPolygonMode; } 00489 00490 void _setSceneBlendingOperation(SceneBlendOperation op); 00491 void _setSeparateSceneBlendingOperation(SceneBlendOperation op, SceneBlendOperation alphaOp); 00492 00493 void _bindGLBuffer(GLenum target, GLuint buffer); 00494 void _deleteGLBuffer(GLenum target, GLuint buffer); 00495 00497 virtual void beginProfileEvent( const String &eventName ); 00498 00500 virtual void endProfileEvent( void ); 00501 00503 virtual void markProfileEvent( const String &eventName ); 00504 }; 00505 } 00506 00507 #endif
Copyright © 2012 Torus Knot Software Ltd
This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.
Last modified Sun Sep 2 2012 07:27:21