/* ----------------------------------------------------------------------------- This source file is part of OGRE (Object-oriented Graphics Rendering Engine) For the latest info, see http://www.ogre3d.org Copyright (c) 2000-2014 Torus Knot Software Ltd Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. ----------------------------------------------------------------------------- */ #ifndef __GLES2RenderSystem_H__ #define __GLES2RenderSystem_H__ #include "OgreGLES2Prerequisites.h" #include "OgreMaterialManager.h" #include "OgreRenderSystem.h" #include "OgreGLSLESProgram.h" #include "OgreGLRenderSystemCommon.h" namespace Ogre { /** \addtogroup RenderSystems RenderSystems * @{ */ /** \defgroup GLES2 GLES2 * Implementation of GL ES 2.x as a rendering system. * @{ */ class GLES2FBOManager; class GLSLESProgramCommon; class GLSLESProgramManager; class GLSLESProgramFactory; class GLES2StateCacheManager; #if !OGRE_NO_GLES2_CG_SUPPORT class GLSLESCgProgramFactory; #endif class HardwareBufferManager; #if OGRE_PLATFORM == OGRE_PLATFORM_ANDROID || OGRE_PLATFORM == OGRE_PLATFORM_EMSCRIPTEN class GLES2ManagedResourceManager; #endif /** Implementation of GL ES 2.x as a rendering system. */ class _OgreGLES2Export GLES2RenderSystem : public GLRenderSystemCommon { private: /// Last min & mip filtering options, so we can combine them FilterOptions mMinFilter; FilterOptions mMipFilter; /// Holds texture type settings for every stage GLenum mTextureTypes[OGRE_MAX_TEXTURE_LAYERS]; /// State cache manager which responsible to reduce redundant state changes GLES2StateCacheManager* mStateCacheManager; GLSLESProgramManager* mProgramManager; GLSLESProgramFactory* mGLSLESProgramFactory; #if !OGRE_NO_GLES2_CG_SUPPORT GLSLESCgProgramFactory* mGLSLESCgProgramFactory; #endif HardwareBufferManager* mHardwareBufferManager; /// Check if the GL system has already been initialised bool mGLInitialised; // local data member of _render that were moved here to improve performance // (save allocations) std::vector mRenderAttribsBound; std::vector mRenderInstanceAttribsBound; GLenum mPolygonMode; GLSLESProgram* mCurrentVertexProgram; GLSLESProgram* mCurrentFragmentProgram; GLenum getBlendMode(SceneBlendFactor ogreBlend) const; void bindVertexElementToGpu(const VertexElement& elem, const HardwareVertexBufferSharedPtr& vertexBuffer, const size_t vertexStart) override; /** Initialises GL extensions, must be done AFTER the GL context has been established. */ void initialiseExtensions(); // Mipmap count of the actual bounded texture size_t mCurTexMipCount; public: // Default constructor / destructor GLES2RenderSystem(); virtual ~GLES2RenderSystem(); // ---------------------------------- // Overridden RenderSystem functions // ---------------------------------- const String& getName(void) const override; void _initialise() override; RenderSystemCapabilities* createRenderSystemCapabilities() const override; void initialiseFromRenderSystemCapabilities(RenderSystemCapabilities* caps, RenderTarget* = NULL) override; void shutdown(void) override; /// @copydoc RenderSystem::_createRenderWindow RenderWindow* _createRenderWindow(const String &name, unsigned int width, unsigned int height, bool fullScreen, const NameValuePairList *miscParams = 0) override; /// @copydoc RenderSystem::_createDepthBufferFor DepthBuffer* _createDepthBufferFor( RenderTarget *renderTarget ) override; /// @copydoc RenderSystem::createMultiRenderTarget MultiRenderTarget * createMultiRenderTarget(const String & name) override; // ----------------------------- // Low-level overridden members // ----------------------------- void _setTexture(size_t unit, bool enabled, const TexturePtr &tex) override; void _setSampler(size_t unit, Sampler& sampler) override; void _setLineWidth(float width) override; void _setViewport(Viewport *vp) override; void _endFrame(void) override; void _setCullingMode(CullingMode mode) override; void _setDepthBufferParams(bool depthTest = true, bool depthWrite = true, CompareFunction depthFunction = CMPF_LESS_EQUAL) override; void _setDepthBias(float constantBias, float slopeScaleBias) override; void setColourBlendState(const ColourBlendState& state) override; void _setPolygonMode(PolygonMode level) override; void setStencilState(const StencilState& state) override; void _render(const RenderOperation& op) override; void setScissorTest(bool enabled, const Rect& rect = Rect()) override; void clearFrameBuffer(unsigned int buffers, const ColourValue& colour = ColourValue::Black, float depth = 1.0f, unsigned short stencil = 0) override; HardwareOcclusionQuery* createHardwareOcclusionQuery(void) override; // ---------------------------------- // GLES2RenderSystem specific members // ---------------------------------- GLES2StateCacheManager * _getStateCacheManager() { return mStateCacheManager; } /** Create VAO on current context */ uint32 _createVao() override; /** Bind VAO, context should be equal to current context, as VAOs are not shared */ void _bindVao(GLContext* context, uint32 vao) override; /** Destroy VAO immediately or defer if it was created on other context */ void _destroyVao(GLContext* context, uint32 vao) override; /** Destroy FBO immediately or defer if it was created on other context */ void _destroyFbo(GLContext* context, uint32 fbo) override; /** Unregister a render target->context mapping. If the context of target is the current context, change the context to the main context so it can be destroyed safely. @note This is automatically called by the destructor of GLContext. */ void _unregisterContext(GLContext *context) override; void _switchContext(GLContext *context) override; void _oneTimeContextInitialization() override; void initialiseContext(RenderWindow* primary); /** * Set current render target to target, enabling its GL context if needed */ void _setRenderTarget(RenderTarget *target) override; void bindRenderTarget(RenderTarget* target) override; GLint convertCompareFunction(CompareFunction func) const; GLint convertStencilOp(StencilOperation op, bool invert = false) const; void bindGpuProgram(GpuProgram* prg) override; void unbindGpuProgram(GpuProgramType gptype) override; void bindGpuProgramParameters(GpuProgramType gptype, const GpuProgramParametersPtr& params, uint16 mask) override; /// @copydoc RenderSystem::_setAlphaRejectSettings void _setAlphaRejectSettings( CompareFunction func, unsigned char value, bool alphaToCoverage ) override; /// @copydoc RenderSystem::beginProfileEvent void beginProfileEvent( const String &eventName ) override; /// @copydoc RenderSystem::endProfileEvent void endProfileEvent( void ) override; /// @copydoc RenderSystem::markProfileEvent void markProfileEvent( const String &eventName ) override; #if OGRE_PLATFORM == OGRE_PLATFORM_ANDROID || OGRE_PLATFORM == OGRE_PLATFORM_EMSCRIPTEN void resetRenderer(RenderWindow* pRenderWnd) override; void notifyOnContextLost() override; static GLES2ManagedResourceManager* getResourceManager(); private: static GLES2ManagedResourceManager* mResourceManager; #endif void _copyContentsToMemory(Viewport* vp, const Box& src, const PixelBox& dst, RenderWindow::FrameBuffer buffer) override; }; } #endif