// Copyright (C) 2002-2012 Nikolaus Gebhardt // This file is part of the "Irrlicht Engine". // For conditions of distribution and use, see copyright notice in Irrlicht.h #ifndef IRR_C_VIDEO_OPEN_GL_H_INCLUDED #define IRR_C_VIDEO_OPEN_GL_H_INCLUDED #include "IrrCompileConfig.h" #include "SIrrCreationParameters.h" namespace irr { class CIrrDeviceWin32; class CIrrDeviceLinux; class CIrrDeviceSDL; class CIrrDeviceMacOSX; } #ifdef _IRR_COMPILE_WITH_OPENGL_ #include "IMaterialRendererServices.h" #include "CNullDriver.h" #include "COpenGLExtensionHandler.h" #include "IContextManager.h" namespace irr { namespace video { class IContextManager; class COpenGLDriver : public CNullDriver, public IMaterialRendererServices, public COpenGLExtensionHandler { public: // Information about state of fixed pipeline activity. enum E_OPENGL_FIXED_PIPELINE_STATE { EOFPS_ENABLE = 0, // fixed pipeline. EOFPS_DISABLE, // programmable pipeline. EOFPS_ENABLE_TO_DISABLE, // switch from fixed to programmable pipeline. EOFPS_DISABLE_TO_ENABLE // switch from programmable to fixed pipeline. }; #if defined(_IRR_COMPILE_WITH_WINDOWS_DEVICE_) || defined(_IRR_COMPILE_WITH_X11_DEVICE_) || defined(_IRR_COMPILE_WITH_OSX_DEVICE_) COpenGLDriver(const SIrrlichtCreationParameters& params, io::IFileSystem* io, IContextManager* contextManager); #endif #ifdef _IRR_COMPILE_WITH_SDL_DEVICE_ COpenGLDriver(const SIrrlichtCreationParameters& params, io::IFileSystem* io, CIrrDeviceSDL* device); #endif bool initDriver(); //! destructor virtual ~COpenGLDriver(); virtual bool beginScene(u16 clearFlag, SColor clearColor = SColor(255,0,0,0), f32 clearDepth = 1.f, u8 clearStencil = 0, const SExposedVideoData& videoData = SExposedVideoData(), core::rect* sourceRect = 0) IRR_OVERRIDE; virtual bool endScene() IRR_OVERRIDE; //! sets transformation virtual void setTransform(E_TRANSFORMATION_STATE state, const core::matrix4& mat) IRR_OVERRIDE; struct SHWBufferLink_opengl : public SHWBufferLink { SHWBufferLink_opengl(const scene::IMeshBuffer *_MeshBuffer): SHWBufferLink(_MeshBuffer), vbo_verticesID(0),vbo_indicesID(0){} GLuint vbo_verticesID; //tmp GLuint vbo_indicesID; //tmp GLuint vbo_verticesSize; //tmp GLuint vbo_indicesSize; //tmp }; //! updates hardware buffer if needed virtual bool updateHardwareBuffer(SHWBufferLink *HWBuffer) IRR_OVERRIDE; //! Create hardware buffer from mesh virtual SHWBufferLink *createHardwareBuffer(const scene::IMeshBuffer* mb) IRR_OVERRIDE; //! Delete hardware buffer (only some drivers can) virtual void deleteHardwareBuffer(SHWBufferLink *HWBuffer) IRR_OVERRIDE; //! Draw hardware buffer virtual void drawHardwareBuffer(SHWBufferLink *HWBuffer) IRR_OVERRIDE; //! Create occlusion query. /** Use node for identification and mesh for occlusion test. */ virtual void addOcclusionQuery(scene::ISceneNode* node, const scene::IMesh* mesh=0) IRR_OVERRIDE; //! Remove occlusion query. virtual void removeOcclusionQuery(scene::ISceneNode* node) IRR_OVERRIDE; //! Run occlusion query. Draws mesh stored in query. /** If the mesh shall not be rendered visible, use overrideMaterial to disable the color and depth buffer. */ virtual void runOcclusionQuery(scene::ISceneNode* node, bool visible=false) IRR_OVERRIDE; //! Update occlusion query. Retrieves results from GPU. /** If the query shall not block, set the flag to false. Update might not occur in this case, though */ virtual void updateOcclusionQuery(scene::ISceneNode* node, bool block=true) IRR_OVERRIDE; //! Return query result. /** Return value is the number of visible pixels/fragments. The value is a safe approximation, i.e. can be larger then the actual value of pixels. */ virtual u32 getOcclusionQueryResult(const scene::ISceneNode* node) const IRR_OVERRIDE; //! Create render target. virtual IRenderTarget* addRenderTarget() IRR_OVERRIDE; //! draws a vertex primitive list virtual void drawVertexPrimitiveList(const void* vertices, u32 vertexCount, const void* indexList, u32 primitiveCount, E_VERTEX_TYPE vType, scene::E_PRIMITIVE_TYPE pType, E_INDEX_TYPE iType) IRR_OVERRIDE; //! draws a vertex primitive list in 2d virtual void draw2DVertexPrimitiveList(const void* vertices, u32 vertexCount, const void* indexList, u32 primitiveCount, E_VERTEX_TYPE vType, scene::E_PRIMITIVE_TYPE pType, E_INDEX_TYPE iType) IRR_OVERRIDE; //! queries the features of the driver, returns true if feature is available virtual bool queryFeature(E_VIDEO_DRIVER_FEATURE feature) const IRR_OVERRIDE { return FeatureEnabled[feature] && COpenGLExtensionHandler::queryFeature(feature); } //! Disable a feature of the driver. virtual void disableFeature(E_VIDEO_DRIVER_FEATURE feature, bool flag=true) IRR_OVERRIDE; //! Sets a material. All 3d drawing functions draw geometry now //! using this material. //! \param material: Material to be used from now on. virtual void setMaterial(const SMaterial& material) IRR_OVERRIDE; virtual void draw2DImage(const video::ITexture* texture, const core::position2d& destPos, const core::rect& sourceRect, const core::rect* clipRect = 0, SColor color = SColor(255, 255, 255, 255), bool useAlphaChannelOfTexture = false) IRR_OVERRIDE; virtual void draw2DImage(const video::ITexture* texture, const core::rect& destRect, const core::rect& sourceRect, const core::rect* clipRect = 0, const video::SColor* const colors = 0, bool useAlphaChannelOfTexture = false) IRR_OVERRIDE; // Was some helper function used in previous texture locking. Currently not accessible for users // and also no longer needed internally (unless we switch back to old texture lock code). // It seems to draw the texture to a fullscreen quad. Also allows drawing one side of a cubemap texture. void draw2DImageQuad(const video::ITexture* texture, u32 layer, bool flip); //! draws a set of 2d images, using a color and the alpha channel of the //! texture if desired. void draw2DImageBatch(const video::ITexture* texture, const core::array >& positions, const core::array >& sourceRects, const core::rect* clipRect, SColor color, bool useAlphaChannelOfTexture) IRR_OVERRIDE; //! draws a set of 2d images, using a color and the alpha /** channel of the texture if desired. The images are drawn beginning at pos and concatenated in one line. All drawings are clipped against clipRect (if != 0). The subtextures are defined by the array of sourceRects and are chosen by the indices given. \param texture: Texture to be drawn. \param pos: Upper left 2d destination position where the image will be drawn. \param sourceRects: Source rectangles of the image. \param indices: List of indices which choose the actual rectangle used each time. \param clipRect: Pointer to rectangle on the screen where the image is clipped to. This pointer can be 0. Then the image is not clipped. \param color: Color with which the image is colored. Note that the alpha component is used: If alpha is other than 255, the image will be transparent. \param useAlphaChannelOfTexture: If true, the alpha channel of the texture is used to draw the image. */ virtual void draw2DImageBatch(const video::ITexture* texture, const core::position2d& pos, const core::array >& sourceRects, const core::array& indices, s32 kerningWidth=0, const core::rect* clipRect=0, SColor color=SColor(255,255,255,255), bool useAlphaChannelOfTexture=false) IRR_OVERRIDE; //! draw an 2d rectangle virtual void draw2DRectangle(SColor color, const core::rect& pos, const core::rect* clip = 0) IRR_OVERRIDE; //!Draws an 2d rectangle with a gradient. virtual void draw2DRectangle(const core::rect& pos, SColor colorLeftUp, SColor colorRightUp, SColor colorLeftDown, SColor colorRightDown, const core::rect* clip = 0) IRR_OVERRIDE; //! Draws a 2d line. virtual void draw2DLine(const core::position2d& start, const core::position2d& end, SColor color=SColor(255,255,255,255)) IRR_OVERRIDE; //! Draws a single pixel virtual void drawPixel(u32 x, u32 y, const SColor & color) IRR_OVERRIDE; //! Draws a 3d box virtual void draw3DBox( const core::aabbox3d& box, SColor color = SColor(255,255,255,255 ) ) IRR_OVERRIDE; //! Draws a 3d line. virtual void draw3DLine(const core::vector3df& start, const core::vector3df& end, SColor color = SColor(255,255,255,255)) IRR_OVERRIDE; //! \return Returns the name of the video driver. Example: In case of the Direct3D8 //! driver, it would return "Direct3D8.1". virtual const wchar_t* getName() const IRR_OVERRIDE; //! deletes all dynamic lights there are virtual void deleteAllDynamicLights() IRR_OVERRIDE; //! adds a dynamic light, returning an index to the light //! \param light: the light data to use to create the light //! \return An index to the light, or -1 if an error occurs virtual s32 addDynamicLight(const SLight& light) IRR_OVERRIDE; //! Turns a dynamic light on or off //! \param lightIndex: the index returned by addDynamicLight //! \param turnOn: true to turn the light on, false to turn it off virtual void turnLightOn(s32 lightIndex, bool turnOn) IRR_OVERRIDE; //! returns the maximal amount of dynamic lights the device can handle virtual u32 getMaximalDynamicLightAmount() const IRR_OVERRIDE; //! Sets the dynamic ambient light color. The default color is //! (0,0,0,0) which means it is dark. //! \param color: New color of the ambient light. virtual void setAmbientLight(const SColorf& color) IRR_OVERRIDE; //! Draws a shadow volume into the stencil buffer. To draw a stencil shadow, do //! this: First, draw all geometry. Then use this method, to draw the shadow //! volume. Then, use IVideoDriver::drawStencilShadow() to visualize the shadow. virtual void drawStencilShadowVolume(const core::array& triangles, bool zfail, u32 debugDataVisible=0) IRR_OVERRIDE; //! Fills the stencil shadow with color. After the shadow volume has been drawn //! into the stencil buffer using IVideoDriver::drawStencilShadowVolume(), use this //! to draw the color of the shadow. virtual void drawStencilShadow(bool clearStencilBuffer=false, video::SColor leftUpEdge = video::SColor(0,0,0,0), video::SColor rightUpEdge = video::SColor(0,0,0,0), video::SColor leftDownEdge = video::SColor(0,0,0,0), video::SColor rightDownEdge = video::SColor(0,0,0,0)) IRR_OVERRIDE; //! sets a viewport virtual void setViewPort(const core::rect& area) IRR_OVERRIDE; //! Sets the fog mode. virtual void setFog(SColor color, E_FOG_TYPE fogType, f32 start, f32 end, f32 density, bool pixelFog, bool rangeFog) IRR_OVERRIDE; //! Only used by the internal engine. Used to notify the driver that //! the window was resized. virtual void OnResize(const core::dimension2d& size) IRR_OVERRIDE; //! Returns type of video driver virtual E_DRIVER_TYPE getDriverType() const IRR_OVERRIDE; //! get color format of the current color buffer virtual ECOLOR_FORMAT getColorFormat() const IRR_OVERRIDE; //! Returns the transformation set by setTransform virtual const core::matrix4& getTransform(E_TRANSFORMATION_STATE state) const IRR_OVERRIDE; //! Can be called by an IMaterialRenderer to make its work easier. void setBasicRenderStates(const SMaterial& material, const SMaterial& lastmaterial, bool resetAllRenderstates); //! Compare in SMaterial doesn't check texture parameters, so we should call this on each OnRender call. virtual void setTextureRenderStates(const SMaterial& material, bool resetAllRenderstates); //! Get a vertex shader constant index. virtual s32 getVertexShaderConstantID(const c8* name) IRR_OVERRIDE; //! Get a pixel shader constant index. virtual s32 getPixelShaderConstantID(const c8* name) IRR_OVERRIDE; //! Sets a vertex shader constant. virtual void setVertexShaderConstant(const f32* data, s32 startRegister, s32 constantAmount=1) IRR_OVERRIDE; //! Sets a pixel shader constant. virtual void setPixelShaderConstant(const f32* data, s32 startRegister, s32 constantAmount=1) IRR_OVERRIDE; //! Sets a constant for the vertex shader based on an index. virtual bool setVertexShaderConstant(s32 index, const f32* floats, int count) IRR_OVERRIDE; //! Int interface for the above. virtual bool setVertexShaderConstant(s32 index, const s32* ints, int count) IRR_OVERRIDE; //! Uint interface for the above. virtual bool setVertexShaderConstant(s32 index, const u32* ints, int count) IRR_OVERRIDE; //! Sets a constant for the pixel shader based on an index. virtual bool setPixelShaderConstant(s32 index, const f32* floats, int count) IRR_OVERRIDE; //! Int interface for the above. virtual bool setPixelShaderConstant(s32 index, const s32* ints, int count) IRR_OVERRIDE; //! Uint interface for the above. virtual bool setPixelShaderConstant(s32 index, const u32* ints, int count) IRR_OVERRIDE; //! disables all textures beginning with the optional fromStage parameter. Otherwise all texture stages are disabled. //! Returns whether disabling was successful or not. bool disableTextures(u32 fromStage=0); //! Adds a new material renderer to the VideoDriver, using //! extGLGetObjectParameteriv(shaderHandle, GL_OBJECT_COMPILE_STATUS_ARB, &status) //! pixel and/or vertex shaders to render geometry. virtual s32 addShaderMaterial(const c8* vertexShaderProgram, const c8* pixelShaderProgram, IShaderConstantSetCallBack* callback, E_MATERIAL_TYPE baseMaterial, s32 userData) IRR_OVERRIDE; //! Adds a new material renderer to the VideoDriver, using GLSL to render geometry. virtual s32 addHighLevelShaderMaterial( const c8* vertexShaderProgram, const c8* vertexShaderEntryPointName, E_VERTEX_SHADER_TYPE vsCompileTarget, const c8* pixelShaderProgram, const c8* pixelShaderEntryPointName, E_PIXEL_SHADER_TYPE psCompileTarget, const c8* geometryShaderProgram, const c8* geometryShaderEntryPointName = "main", E_GEOMETRY_SHADER_TYPE gsCompileTarget = EGST_GS_4_0, scene::E_PRIMITIVE_TYPE inType = scene::EPT_TRIANGLES, scene::E_PRIMITIVE_TYPE outType = scene::EPT_TRIANGLE_STRIP, u32 verticesOut = 0, IShaderConstantSetCallBack* callback = 0, E_MATERIAL_TYPE baseMaterial = video::EMT_SOLID, s32 userData = 0) IRR_OVERRIDE; //! Returns a pointer to the IVideoDriver interface. (Implementation for //! IMaterialRendererServices) virtual IVideoDriver* getVideoDriver() IRR_OVERRIDE; //! Returns the maximum amount of primitives (mostly vertices) which //! the device is able to render with one drawIndexedTriangleList //! call. virtual u32 getMaximalPrimitiveCount() const IRR_OVERRIDE; virtual ITexture* addRenderTargetTexture(const core::dimension2d& size, const io::path& name, const ECOLOR_FORMAT format = ECF_UNKNOWN) IRR_OVERRIDE; //! Creates a render target texture for a cubemap ITexture* addRenderTargetTextureCubemap(const irr::u32 sideLen, const io::path& name, const ECOLOR_FORMAT format) IRR_OVERRIDE; virtual bool setRenderTargetEx(IRenderTarget* target, u16 clearFlag, SColor clearColor = SColor(255,0,0,0), f32 clearDepth = 1.f, u8 clearStencil = 0) IRR_OVERRIDE; virtual void clearBuffers(u16 flag, SColor color = SColor(255,0,0,0), f32 depth = 1.f, u8 stencil = 0) IRR_OVERRIDE; //! Returns an image created from the last rendered frame. virtual IImage* createScreenShot(video::ECOLOR_FORMAT format=video::ECF_UNKNOWN, video::E_RENDER_TARGET target=video::ERT_FRAME_BUFFER) IRR_OVERRIDE; //! checks if an OpenGL error has happened and prints it (+ some internal code which is usually the line number) //! for performance reasons only available in debug mode bool testGLError(int code=0); //! Set/unset a clipping plane. //! There are at least 6 clipping planes available for the user to set at will. //! \param index: The plane index. Must be between 0 and MaxUserClipPlanes. //! \param plane: The plane itself. //! \param enable: If true, enable the clipping plane else disable it. virtual bool setClipPlane(u32 index, const core::plane3df& plane, bool enable=false) IRR_OVERRIDE; //! Enable/disable a clipping plane. //! There are at least 6 clipping planes available for the user to set at will. //! \param index: The plane index. Must be between 0 and MaxUserClipPlanes. //! \param enable: If true, enable the clipping plane else disable it. virtual void enableClipPlane(u32 index, bool enable) IRR_OVERRIDE; //! Enable the 2d override material virtual void enableMaterial2D(bool enable=true) IRR_OVERRIDE; //! Returns the graphics card vendor name. virtual core::stringc getVendorInfo() IRR_OVERRIDE {return VendorName;} //! Returns the maximum texture size supported. virtual core::dimension2du getMaxTextureSize() const IRR_OVERRIDE; //! Removes a texture from the texture cache and deletes it, freeing lot of memory. virtual void removeTexture(ITexture* texture) IRR_OVERRIDE; //! Check if the driver supports creating textures with the given color format virtual bool queryTextureFormat(ECOLOR_FORMAT format) const IRR_OVERRIDE; //! Used by some SceneNodes to check if a material should be rendered in the transparent render pass virtual bool needsTransparentRenderPass(const irr::video::SMaterial& material) const IRR_OVERRIDE; //! Convert E_PRIMITIVE_TYPE to OpenGL equivalent GLenum primitiveTypeToGL(scene::E_PRIMITIVE_TYPE type) const; //! Convert E_BLEND_FACTOR to OpenGL equivalent GLenum getGLBlend(E_BLEND_FACTOR factor) const; //! Get ZBuffer bits. GLenum getZBufferBits() const; bool getColorFormatParameters(ECOLOR_FORMAT format, GLint& internalFormat, GLenum& pixelFormat, GLenum& pixelType, void(**converter)(const void*, u32, void*)) const; //! Return info about fixed pipeline state. E_OPENGL_FIXED_PIPELINE_STATE getFixedPipelineState() const; //! Set info about fixed pipeline state. void setFixedPipelineState(E_OPENGL_FIXED_PIPELINE_STATE state); //! Get current material. const SMaterial& getCurrentMaterial() const; //! Rest renderstates forcing stuff like OnSetMaterial to be called void DoResetRenderStates() { ResetRenderStates = true; } COpenGLCacheHandler* getCacheHandler() const; private: bool updateVertexHardwareBuffer(SHWBufferLink_opengl *HWBuffer); bool updateIndexHardwareBuffer(SHWBufferLink_opengl *HWBuffer); void uploadClipPlane(u32 index); //! inits the parts of the open gl driver used on all platforms bool genericDriverInit(); virtual ITexture* createDeviceDependentTexture(const io::path& name, IImage* image) IRR_OVERRIDE; virtual ITexture* createDeviceDependentTextureCubemap(const io::path& name, const core::array& image) IRR_OVERRIDE; //! creates a transposed matrix in supplied GLfloat array to pass to OpenGL inline void getGLMatrix(GLfloat gl_matrix[16], const core::matrix4& m); inline void getGLTextureMatrix(GLfloat gl_matrix[16], const core::matrix4& m); //! get native wrap mode value GLint getTextureWrapMode(const u8 clamp); //! sets the needed renderstates void setRenderStates3DMode(); //! sets the needed renderstates void setRenderStates2DMode(bool alpha, bool texture, bool alphaChannel); void createMaterialRenderers(); //! Assign a hardware light to the specified requested light, if any //! free hardware lights exist. //! \param[in] lightIndex: the index of the requesting light void assignHardwareLight(u32 lightIndex); //! helper function for render setup. void getColorBuffer(const void* vertices, u32 vertexCount, E_VERTEX_TYPE vType); //! helper function doing the actual rendering. void renderArray(const void* indexList, u32 primitiveCount, scene::E_PRIMITIVE_TYPE pType, E_INDEX_TYPE iType); COpenGLCacheHandler* CacheHandler; core::stringw Name; core::matrix4 Matrices[ETS_COUNT]; core::array ColorBuffer; //! enumeration for rendering modes such as 2d and 3d for minimizing the switching of renderStates. enum E_RENDER_MODE { ERM_NONE = 0, // no render state has been set yet. ERM_2D, // 2d drawing rendermode ERM_3D // 3d rendering mode }; E_RENDER_MODE CurrentRenderMode; //! bool to make all renderstates reset if set to true. bool ResetRenderStates; bool Transformation3DChanged; u8 AntiAlias; SMaterial Material, LastMaterial; struct SUserClipPlane { SUserClipPlane() : Enabled(false) {} core::plane3df Plane; bool Enabled; }; core::array UserClipPlanes; core::stringc VendorName; core::matrix4 TextureFlipMatrix; //! Color buffer format ECOLOR_FORMAT ColorFormat; E_OPENGL_FIXED_PIPELINE_STATE FixedPipelineState; SIrrlichtCreationParameters Params; //! All the lights that have been requested; a hardware limited //! number of them will be used at once. struct RequestedLight { RequestedLight(SLight const & lightData) : LightData(lightData), HardwareLightIndex(-1), DesireToBeOn(true) { } SLight LightData; s32 HardwareLightIndex; // GL_LIGHT0 - GL_LIGHT7 bool DesireToBeOn; }; core::array RequestedLights; //! Built-in 2D quad for 2D rendering. S3DVertex Quad2DVertices[4]; static const u16 Quad2DIndices[4]; #ifdef _IRR_COMPILE_WITH_SDL_DEVICE_ CIrrDeviceSDL *SDLDevice; #endif IContextManager* ContextManager; E_DEVICE_TYPE DeviceType; }; } // end namespace video } // end namespace irr #endif // _IRR_COMPILE_WITH_OPENGL_ #endif