source/Irrlicht/OpenGL/Driver.h

   1 // Copyright (C) 2023 Vitaliy Lobachevskiy\r
   2 // Copyright (C) 2014 Patryk Nadrowski\r
   3 // Copyright (C) 2009-2010 Amundis\r
   4 // This file is part of the "Irrlicht Engine".\r
   5 // For conditions of distribution and use, see copyright notice in Irrlicht.h\r
   6 \r
   7 #pragma once\r
   8 \r
   9 #include "SIrrCreationParameters.h"\r
  10 \r
  11 #include "Common.h"\r
  12 #include "CNullDriver.h"\r
  13 #include "IMaterialRendererServices.h"\r
  14 #include "EDriverFeatures.h"\r
  15 #include "fast_atof.h"\r
  16 #include "ExtensionHandler.h"\r
  17 #include "IContextManager.h"\r
  18 \r
  19 namespace irr\r
  20 {\r
  21 namespace video\r
  22 {\r
  23 \r
  24         class COpenGL3FixedPipelineRenderer;\r
  25         class COpenGL3Renderer2D;\r
  26 \r
  27         class COpenGL3Driver : public CNullDriver, public IMaterialRendererServices, public COpenGL3ExtensionHandler\r
  28         {\r
  29                 friend class COpenGLCoreTexture<COpenGL3Driver>;\r
  30                 friend IVideoDriver* createOpenGL3Driver(const SIrrlichtCreationParameters& params, io::IFileSystem* io, IContextManager* contextManager);\r
  31 \r
  32         protected:\r
  33                 //! constructor (use createOpenGL3Driver instead)\r
  34                 COpenGL3Driver(const SIrrlichtCreationParameters& params, io::IFileSystem* io, IContextManager* contextManager);\r
  35 \r
  36         public:\r
  37 \r
  38                 //! destructor\r
  39                 virtual ~COpenGL3Driver();\r
  40 \r
  41                 virtual bool beginScene(u16 clearFlag, SColor clearColor = SColor(255, 0, 0, 0), f32 clearDepth = 1.f, u8 clearStencil = 0,\r
  42                         const SExposedVideoData& videoData = SExposedVideoData(), core::rect<s32>* sourceRect = 0) override;\r
  43 \r
  44                 bool endScene() override;\r
  45 \r
  46                 //! sets transformation\r
  47                 void setTransform(E_TRANSFORMATION_STATE state, const core::matrix4& mat) override;\r
  48 \r
  49                 struct SHWBufferLink_opengl : public SHWBufferLink\r
  50                 {\r
  51                         SHWBufferLink_opengl(const scene::IMeshBuffer *meshBuffer)\r
  52                         : SHWBufferLink(meshBuffer), vbo_verticesID(0), vbo_indicesID(0)\r
  53                         , vbo_verticesSize(0), vbo_indicesSize(0)\r
  54                         {}\r
  55 \r
  56                         u32 vbo_verticesID; //tmp\r
  57                         u32 vbo_indicesID; //tmp\r
  58 \r
  59                         u32 vbo_verticesSize; //tmp\r
  60                         u32 vbo_indicesSize; //tmp\r
  61                 };\r
  62 \r
  63                 bool updateVertexHardwareBuffer(SHWBufferLink_opengl *HWBuffer);\r
  64                 bool updateIndexHardwareBuffer(SHWBufferLink_opengl *HWBuffer);\r
  65 \r
  66                 //! updates hardware buffer if needed\r
  67                 bool updateHardwareBuffer(SHWBufferLink *HWBuffer) override;\r
  68 \r
  69                 //! Create hardware buffer from mesh\r
  70                 SHWBufferLink *createHardwareBuffer(const scene::IMeshBuffer* mb) override;\r
  71 \r
  72                 //! Delete hardware buffer (only some drivers can)\r
  73                 void deleteHardwareBuffer(SHWBufferLink *HWBuffer) override;\r
  74 \r
  75                 //! Draw hardware buffer\r
  76                 void drawHardwareBuffer(SHWBufferLink *HWBuffer) override;\r
  77 \r
  78                 IRenderTarget* addRenderTarget() override;\r
  79 \r
  80                 //! draws a vertex primitive list\r
  81                 virtual void drawVertexPrimitiveList(const void* vertices, u32 vertexCount,\r
  82                                 const void* indexList, u32 primitiveCount,\r
  83                                 E_VERTEX_TYPE vType, scene::E_PRIMITIVE_TYPE pType, E_INDEX_TYPE iType) override;\r
  84 \r
  85                 //! queries the features of the driver, returns true if feature is available\r
  86                 bool queryFeature(E_VIDEO_DRIVER_FEATURE feature) const override\r
  87                 {\r
  88                         return FeatureEnabled[feature] && COpenGL3ExtensionHandler::queryFeature(feature);\r
  89                 }\r
  90 \r
  91                 //! Sets a material.\r
  92                 void setMaterial(const SMaterial& material) override;\r
  93 \r
  94                 virtual void draw2DImage(const video::ITexture* texture,\r
  95                                 const core::position2d<s32>& destPos,\r
  96                                 const core::rect<s32>& sourceRect, const core::rect<s32>* clipRect = 0,\r
  97                                 SColor color = SColor(255, 255, 255, 255), bool useAlphaChannelOfTexture = false) override;\r
  98 \r
  99                 virtual void draw2DImage(const video::ITexture* texture, const core::rect<s32>& destRect,\r
 100                         const core::rect<s32>& sourceRect, const core::rect<s32>* clipRect = 0,\r
 101                         const video::SColor* const colors = 0, bool useAlphaChannelOfTexture = false) override;\r
 102 \r
 103                 // internally used\r
 104                 virtual void draw2DImage(const video::ITexture* texture, u32 layer, bool flip);\r
 105 \r
 106                 //! draws a set of 2d images\r
 107                 virtual void draw2DImageBatch(const video::ITexture* texture,\r
 108                                 const core::position2d<s32>& pos,\r
 109                                 const core::array<core::rect<s32> >& sourceRects,\r
 110                                 const core::array<s32>& indices, s32 kerningWidth = 0,\r
 111                                 const core::rect<s32>* clipRect = 0,\r
 112                                 SColor color = SColor(255, 255, 255, 255),\r
 113                                 bool useAlphaChannelOfTexture = false) override;\r
 114 \r
 115                 void draw2DImageBatch(const video::ITexture* texture,\r
 116                                 const core::array<core::position2d<s32> >& positions,\r
 117                                 const core::array<core::rect<s32> >& sourceRects,\r
 118                                 const core::rect<s32>* clipRect,\r
 119                                 SColor color,\r
 120                                 bool useAlphaChannelOfTexture) override;\r
 121 \r
 122                 //! draw an 2d rectangle\r
 123                 virtual void draw2DRectangle(SColor color, const core::rect<s32>& pos,\r
 124                                 const core::rect<s32>* clip = 0) override;\r
 125 \r
 126                 //!Draws an 2d rectangle with a gradient.\r
 127                 virtual void draw2DRectangle(const core::rect<s32>& pos,\r
 128                                 SColor colorLeftUp, SColor colorRightUp, SColor colorLeftDown, SColor colorRightDown,\r
 129                                 const core::rect<s32>* clip = 0) override;\r
 130 \r
 131                 //! Draws a 2d line.\r
 132                 virtual void draw2DLine(const core::position2d<s32>& start,\r
 133                                 const core::position2d<s32>& end,\r
 134                                 SColor color = SColor(255, 255, 255, 255)) override;\r
 135 \r
 136                 //! Draws a single pixel\r
 137                 void drawPixel(u32 x, u32 y, const SColor & color) override;\r
 138 \r
 139                 //! Draws a 3d line.\r
 140                 virtual void draw3DLine(const core::vector3df& start,\r
 141                                 const core::vector3df& end,\r
 142                                 SColor color = SColor(255, 255, 255, 255)) override;\r
 143 \r
 144                 //! Draws a pixel\r
 145 //                      virtual void drawPixel(u32 x, u32 y, const SColor & color);\r
 146 \r
 147                 //! Returns the name of the video driver.\r
 148                 const wchar_t* getName() const override;\r
 149 \r
 150                 //! Returns the maximum texture size supported.\r
 151                 core::dimension2du getMaxTextureSize() const override;\r
 152 \r
 153                 //! Draws a shadow volume into the stencil buffer.\r
 154                 void drawStencilShadowVolume(const core::array<core::vector3df>& triangles, bool zfail, u32 debugDataVisible=0) override;\r
 155 \r
 156                 //! Fills the stencil shadow with color.\r
 157                 virtual void drawStencilShadow(bool clearStencilBuffer=false,\r
 158                         video::SColor leftUpEdge = video::SColor(0,0,0,0),\r
 159                         video::SColor rightUpEdge = video::SColor(0,0,0,0),\r
 160                         video::SColor leftDownEdge = video::SColor(0,0,0,0),\r
 161                         video::SColor rightDownEdge = video::SColor(0,0,0,0)) override;\r
 162 \r
 163                 //! sets a viewport\r
 164                 void setViewPort(const core::rect<s32>& area) override;\r
 165 \r
 166                 //! Only used internally by the engine\r
 167                 void OnResize(const core::dimension2d<u32>& size) override;\r
 168 \r
 169                 //! Returns type of video driver\r
 170                 E_DRIVER_TYPE getDriverType() const override;\r
 171 \r
 172                 //! get color format of the current color buffer\r
 173                 ECOLOR_FORMAT getColorFormat() const override;\r
 174 \r
 175                 //! Returns the transformation set by setTransform\r
 176                 const core::matrix4& getTransform(E_TRANSFORMATION_STATE state) const override;\r
 177 \r
 178                 //! Can be called by an IMaterialRenderer to make its work easier.\r
 179                 void setBasicRenderStates(const SMaterial& material, const SMaterial& lastmaterial, bool resetAllRenderstates) override;\r
 180 \r
 181                 //! Compare in SMaterial doesn't check texture parameters, so we should call this on each OnRender call.\r
 182                 void setTextureRenderStates(const SMaterial& material, bool resetAllRenderstates);\r
 183 \r
 184                 //! Get a vertex shader constant index.\r
 185                 s32 getVertexShaderConstantID(const c8* name) override;\r
 186 \r
 187                 //! Get a pixel shader constant index.\r
 188                 s32 getPixelShaderConstantID(const c8* name) override;\r
 189 \r
 190                 //! Sets a vertex shader constant.\r
 191                 void setVertexShaderConstant(const f32* data, s32 startRegister, s32 constantAmount = 1) override;\r
 192 \r
 193                 //! Sets a pixel shader constant.\r
 194                 void setPixelShaderConstant(const f32* data, s32 startRegister, s32 constantAmount = 1) override;\r
 195 \r
 196                 //! Sets a constant for the vertex shader based on an index.\r
 197                 bool setVertexShaderConstant(s32 index, const f32* floats, int count) override;\r
 198 \r
 199                 //! Int interface for the above.\r
 200                 bool setVertexShaderConstant(s32 index, const s32* ints, int count) override;\r
 201 \r
 202                 //! Uint interface for the above.\r
 203                 bool setVertexShaderConstant(s32 index, const u32* ints, int count) override;\r
 204 \r
 205                 //! Sets a constant for the pixel shader based on an index.\r
 206                 bool setPixelShaderConstant(s32 index, const f32* floats, int count) override;\r
 207 \r
 208                 //! Int interface for the above.\r
 209                 bool setPixelShaderConstant(s32 index, const s32* ints, int count) override;\r
 210 \r
 211                 //! Uint interface for the above.\r
 212                 bool setPixelShaderConstant(s32 index, const u32* ints, int count) override;\r
 213 \r
 214                 //! Adds a new material renderer to the VideoDriver\r
 215                 virtual s32 addShaderMaterial(const c8* vertexShaderProgram, const c8* pixelShaderProgram,\r
 216                                 IShaderConstantSetCallBack* callback, E_MATERIAL_TYPE baseMaterial, s32 userData) override;\r
 217 \r
 218                 //! Adds a new material renderer to the VideoDriver\r
 219                 virtual s32 addHighLevelShaderMaterial(\r
 220                                 const c8* vertexShaderProgram,\r
 221                                 const c8* vertexShaderEntryPointName = 0,\r
 222                                 E_VERTEX_SHADER_TYPE vsCompileTarget = EVST_VS_1_1,\r
 223                                 const c8* pixelShaderProgram = 0,\r
 224                                 const c8* pixelShaderEntryPointName = 0,\r
 225                                 E_PIXEL_SHADER_TYPE psCompileTarget = EPST_PS_1_1,\r
 226                                 const c8* geometryShaderProgram = 0,\r
 227                                 const c8* geometryShaderEntryPointName = "main",\r
 228                                 E_GEOMETRY_SHADER_TYPE gsCompileTarget = EGST_GS_4_0,\r
 229                                 scene::E_PRIMITIVE_TYPE inType = scene::EPT_TRIANGLES,\r
 230                                 scene::E_PRIMITIVE_TYPE outType = scene::EPT_TRIANGLE_STRIP,\r
 231                                 u32 verticesOut = 0,\r
 232                                 IShaderConstantSetCallBack* callback = 0,\r
 233                                 E_MATERIAL_TYPE baseMaterial = video::EMT_SOLID,\r
 234                                 s32 userData=0) override;\r
 235 \r
 236                 //! Returns pointer to the IGPUProgrammingServices interface.\r
 237                 IGPUProgrammingServices* getGPUProgrammingServices() override;\r
 238 \r
 239                 //! Returns a pointer to the IVideoDriver interface.\r
 240                 IVideoDriver* getVideoDriver() override;\r
 241 \r
 242                 //! Returns the maximum amount of primitives\r
 243                 u32 getMaximalPrimitiveCount() const override;\r
 244 \r
 245                 virtual ITexture* addRenderTargetTexture(const core::dimension2d<u32>& size,\r
 246                                 const io::path& name, const ECOLOR_FORMAT format = ECF_UNKNOWN) override;\r
 247 \r
 248                 //! Creates a render target texture for a cubemap\r
 249                 ITexture* addRenderTargetTextureCubemap(const irr::u32 sideLen,\r
 250                                 const io::path& name, const ECOLOR_FORMAT format) override;\r
 251 \r
 252                 virtual bool setRenderTargetEx(IRenderTarget* target, u16 clearFlag, SColor clearColor = SColor(255, 0, 0, 0),\r
 253                         f32 clearDepth = 1.f, u8 clearStencil = 0) override;\r
 254 \r
 255                 void clearBuffers(u16 flag, SColor color = SColor(255, 0, 0, 0), f32 depth = 1.f, u8 stencil = 0) override;\r
 256 \r
 257                 //! Returns an image created from the last rendered frame.\r
 258                 IImage* createScreenShot(video::ECOLOR_FORMAT format=video::ECF_UNKNOWN, video::E_RENDER_TARGET target=video::ERT_FRAME_BUFFER) override;\r
 259 \r
 260                 //! checks if an OpenGL error has happened and prints it (+ some internal code which is usually the line number)\r
 261                 bool testGLError(int code=0);\r
 262 \r
 263                 //! checks if an OGLES1 error has happened and prints it\r
 264                 bool testEGLError();\r
 265 \r
 266                 //! Set/unset a clipping plane.\r
 267                 bool setClipPlane(u32 index, const core::plane3df& plane, bool enable = false) override;\r
 268 \r
 269                 //! returns the current amount of user clip planes set.\r
 270                 u32 getClipPlaneCount() const;\r
 271 \r
 272                 //! returns the 0 indexed Plane\r
 273                 const core::plane3df& getClipPlane(u32 index) const;\r
 274 \r
 275                 //! Enable/disable a clipping plane.\r
 276                 void enableClipPlane(u32 index, bool enable) override;\r
 277 \r
 278                 //! Returns the graphics card vendor name.\r
 279                 core::stringc getVendorInfo() override\r
 280                 {\r
 281                         return VendorName;\r
 282                 };\r
 283 \r
 284                 void removeTexture(ITexture* texture) override;\r
 285 \r
 286                 //! Check if the driver supports creating textures with the given color format\r
 287                 bool queryTextureFormat(ECOLOR_FORMAT format) const override;\r
 288 \r
 289                 //! Used by some SceneNodes to check if a material should be rendered in the transparent render pass\r
 290                 bool needsTransparentRenderPass(const irr::video::SMaterial& material) const override;\r
 291 \r
 292                 //! Convert E_BLEND_FACTOR to OpenGL equivalent\r
 293                 GLenum getGLBlend(E_BLEND_FACTOR factor) const;\r
 294 \r
 295                 //! Get ZBuffer bits.\r
 296                 virtual GLenum getZBufferBits() const;\r
 297 \r
 298                 virtual bool getColorFormatParameters(ECOLOR_FORMAT format, GLint& internalFormat, GLenum& pixelFormat,\r
 299                         GLenum& pixelType, void(**converter)(const void*, s32, void*)) const;\r
 300 \r
 301                 //! Get current material.\r
 302                 const SMaterial& getCurrentMaterial() const;\r
 303 \r
 304                 COpenGL3CacheHandler* getCacheHandler() const;\r
 305 \r
 306         protected:\r
 307                 //! inits the opengl-es driver\r
 308                 virtual bool genericDriverInit(const core::dimension2d<u32>& screenSize, bool stencilBuffer);\r
 309 \r
 310                 void chooseMaterial2D();\r
 311 \r
 312                 ITexture* createDeviceDependentTexture(const io::path& name, IImage* image) override;\r
 313 \r
 314                 ITexture* createDeviceDependentTextureCubemap(const io::path& name, const core::array<IImage*>& image) override;\r
 315 \r
 316                 //! Map Irrlicht wrap mode to OpenGL enum\r
 317                 GLint getTextureWrapMode(u8 clamp) const;\r
 318 \r
 319                 //! sets the needed renderstates\r
 320                 void setRenderStates3DMode();\r
 321 \r
 322                 //! sets the needed renderstates\r
 323                 void setRenderStates2DMode(bool alpha, bool texture, bool alphaChannel);\r
 324 \r
 325                 //! Prevent setRenderStateMode calls to do anything.\r
 326                 // hack to allow drawing meshbuffers in 2D mode.\r
 327                 // Better solution would be passing this flag through meshbuffers,\r
 328                 // but the way this is currently implemented in Irrlicht makes this tricky to implement\r
 329                 void lockRenderStateMode()\r
 330                 {\r
 331                         LockRenderStateMode = true;\r
 332                 }\r
 333 \r
 334                 //! Allow setRenderStateMode calls to work again\r
 335                 void unlockRenderStateMode()\r
 336                 {\r
 337                         LockRenderStateMode = false;\r
 338                 }\r
 339 \r
 340                 void draw2D3DVertexPrimitiveList(const void* vertices,\r
 341                                 u32 vertexCount, const void* indexList, u32 primitiveCount,\r
 342                                 E_VERTEX_TYPE vType, scene::E_PRIMITIVE_TYPE pType,\r
 343                                 E_INDEX_TYPE iType, bool is3D);\r
 344 \r
 345                 void createMaterialRenderers();\r
 346 \r
 347                 void loadShaderData(const io::path& vertexShaderName, const io::path& fragmentShaderName, c8** vertexShaderData, c8** fragmentShaderData);\r
 348 \r
 349                 bool setMaterialTexture(irr::u32 layerIdx, const irr::video::ITexture* texture);\r
 350 \r
 351                 //! Same as `CacheHandler->setViewport`, but also sets `ViewPort`\r
 352                 virtual void setViewPortRaw(u32 width, u32 height);\r
 353 \r
 354                 COpenGL3CacheHandler* CacheHandler;\r
 355                 core::stringw Name;\r
 356                 core::stringc VendorName;\r
 357                 SIrrlichtCreationParameters Params;\r
 358 \r
 359                 //! bool to make all renderstates reset if set to true.\r
 360                 bool ResetRenderStates;\r
 361                 bool LockRenderStateMode;\r
 362                 u8 AntiAlias;\r
 363 \r
 364                 struct SUserClipPlane\r
 365                 {\r
 366                         core::plane3df Plane;\r
 367                         bool Enabled;\r
 368                 };\r
 369 \r
 370                 core::array<SUserClipPlane> UserClipPlane;\r
 371 \r
 372                 core::matrix4 TextureFlipMatrix;\r
 373 \r
 374 private:\r
 375 \r
 376                 COpenGL3Renderer2D* MaterialRenderer2DActive;\r
 377                 COpenGL3Renderer2D* MaterialRenderer2DTexture;\r
 378                 COpenGL3Renderer2D* MaterialRenderer2DNoTexture;\r
 379 \r
 380                 core::matrix4 Matrices[ETS_COUNT];\r
 381 \r
 382                 //! enumeration for rendering modes such as 2d and 3d for minimizing the switching of renderStates.\r
 383                 enum E_RENDER_MODE\r
 384                 {\r
 385                         ERM_NONE = 0, // no render state has been set yet.\r
 386                         ERM_2D, // 2d drawing rendermode\r
 387                         ERM_3D // 3d rendering mode\r
 388                 };\r
 389 \r
 390                 E_RENDER_MODE CurrentRenderMode;\r
 391                 bool Transformation3DChanged;\r
 392                 irr::io::path OGLES2ShaderPath;\r
 393 \r
 394                 SMaterial Material, LastMaterial;\r
 395 \r
 396                 //! Color buffer format\r
 397                 ECOLOR_FORMAT ColorFormat;\r
 398 \r
 399                 IContextManager* ContextManager;\r
 400         };\r
 401 \r
 402 } // end namespace video\r
 403 } // end namespace irr\r