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https://github.com/minetest/irrlicht.git
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399 lines
14 KiB
C++
399 lines
14 KiB
C++
// Copyright (C) 2023 Vitaliy Lobachevskiy
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// Copyright (C) 2014 Patryk Nadrowski
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// Copyright (C) 2009-2010 Amundis
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// This file is part of the "Irrlicht Engine".
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// For conditions of distribution and use, see copyright notice in Irrlicht.h
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#pragma once
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#include "SIrrCreationParameters.h"
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#include "Common.h"
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#include "CNullDriver.h"
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#include "IMaterialRendererServices.h"
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#include "EDriverFeatures.h"
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#include "fast_atof.h"
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#include "ExtensionHandler.h"
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#include "IContextManager.h"
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namespace irr
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{
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namespace video
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{
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struct VertexType;
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class COpenGL3FixedPipelineRenderer;
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class COpenGL3Renderer2D;
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class COpenGL3DriverBase : public CNullDriver, public IMaterialRendererServices, public COpenGL3ExtensionHandler
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{
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friend class COpenGLCoreTexture<COpenGL3DriverBase>;
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protected:
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//! constructor (use createOpenGL3Driver instead)
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COpenGL3DriverBase(const SIrrlichtCreationParameters& params, io::IFileSystem* io, IContextManager* contextManager);
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public:
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//! destructor
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virtual ~COpenGL3DriverBase();
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virtual bool beginScene(u16 clearFlag, SColor clearColor = SColor(255, 0, 0, 0), f32 clearDepth = 1.f, u8 clearStencil = 0,
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const SExposedVideoData& videoData = SExposedVideoData(), core::rect<s32>* sourceRect = 0) override;
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bool endScene() override;
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//! sets transformation
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void setTransform(E_TRANSFORMATION_STATE state, const core::matrix4& mat) override;
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struct SHWBufferLink_opengl : public SHWBufferLink
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{
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SHWBufferLink_opengl(const scene::IMeshBuffer *meshBuffer)
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: SHWBufferLink(meshBuffer), vbo_verticesID(0), vbo_indicesID(0)
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, vbo_verticesSize(0), vbo_indicesSize(0)
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{}
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u32 vbo_verticesID; //tmp
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u32 vbo_indicesID; //tmp
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u32 vbo_verticesSize; //tmp
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u32 vbo_indicesSize; //tmp
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};
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bool updateVertexHardwareBuffer(SHWBufferLink_opengl *HWBuffer);
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bool updateIndexHardwareBuffer(SHWBufferLink_opengl *HWBuffer);
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//! updates hardware buffer if needed
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bool updateHardwareBuffer(SHWBufferLink *HWBuffer) override;
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//! Create hardware buffer from mesh
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SHWBufferLink *createHardwareBuffer(const scene::IMeshBuffer* mb) override;
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//! Delete hardware buffer (only some drivers can)
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void deleteHardwareBuffer(SHWBufferLink *HWBuffer) override;
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//! Draw hardware buffer
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void drawHardwareBuffer(SHWBufferLink *HWBuffer) override;
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IRenderTarget* addRenderTarget() override;
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//! draws a vertex primitive list
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virtual void drawVertexPrimitiveList(const void* vertices, u32 vertexCount,
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const void* indexList, u32 primitiveCount,
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E_VERTEX_TYPE vType, scene::E_PRIMITIVE_TYPE pType, E_INDEX_TYPE iType) override;
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//! queries the features of the driver, returns true if feature is available
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bool queryFeature(E_VIDEO_DRIVER_FEATURE feature) const override
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{
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return FeatureEnabled[feature] && COpenGL3ExtensionHandler::queryFeature(feature);
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}
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//! Sets a material.
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void setMaterial(const SMaterial& material) override;
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virtual void draw2DImage(const video::ITexture* texture,
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const core::position2d<s32>& destPos,
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const core::rect<s32>& sourceRect, const core::rect<s32>* clipRect = 0,
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SColor color = SColor(255, 255, 255, 255), bool useAlphaChannelOfTexture = false) override;
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virtual void draw2DImage(const video::ITexture* texture, const core::rect<s32>& destRect,
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const core::rect<s32>& sourceRect, const core::rect<s32>* clipRect = 0,
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const video::SColor* const colors = 0, bool useAlphaChannelOfTexture = false) override;
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// internally used
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virtual void draw2DImage(const video::ITexture* texture, u32 layer, bool flip);
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void draw2DImageBatch(const video::ITexture* texture,
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const core::array<core::position2d<s32> >& positions,
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const core::array<core::rect<s32> >& sourceRects,
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const core::rect<s32>* clipRect,
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SColor color,
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bool useAlphaChannelOfTexture) override;
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//! draw an 2d rectangle
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virtual void draw2DRectangle(SColor color, const core::rect<s32>& pos,
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const core::rect<s32>* clip = 0) override;
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//!Draws an 2d rectangle with a gradient.
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virtual void draw2DRectangle(const core::rect<s32>& pos,
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SColor colorLeftUp, SColor colorRightUp, SColor colorLeftDown, SColor colorRightDown,
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const core::rect<s32>* clip = 0) override;
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//! Draws a 2d line.
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virtual void draw2DLine(const core::position2d<s32>& start,
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const core::position2d<s32>& end,
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SColor color = SColor(255, 255, 255, 255)) override;
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//! Draws a single pixel
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void drawPixel(u32 x, u32 y, const SColor & color) override;
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//! Draws a 3d line.
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virtual void draw3DLine(const core::vector3df& start,
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const core::vector3df& end,
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SColor color = SColor(255, 255, 255, 255)) override;
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//! Draws a pixel
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// virtual void drawPixel(u32 x, u32 y, const SColor & color);
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//! Returns the name of the video driver.
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const wchar_t* getName() const override;
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//! Returns the maximum texture size supported.
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core::dimension2du getMaxTextureSize() const override;
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//! sets a viewport
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void setViewPort(const core::rect<s32>& area) override;
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//! Only used internally by the engine
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void OnResize(const core::dimension2d<u32>& size) override;
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//! Returns type of video driver
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E_DRIVER_TYPE getDriverType() const override;
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//! get color format of the current color buffer
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ECOLOR_FORMAT getColorFormat() const override;
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//! Returns the transformation set by setTransform
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const core::matrix4& getTransform(E_TRANSFORMATION_STATE state) const override;
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//! Can be called by an IMaterialRenderer to make its work easier.
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void setBasicRenderStates(const SMaterial& material, const SMaterial& lastmaterial, bool resetAllRenderstates) override;
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//! Compare in SMaterial doesn't check texture parameters, so we should call this on each OnRender call.
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void setTextureRenderStates(const SMaterial& material, bool resetAllRenderstates);
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//! Get a vertex shader constant index.
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s32 getVertexShaderConstantID(const c8* name) override;
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//! Get a pixel shader constant index.
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s32 getPixelShaderConstantID(const c8* name) override;
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//! Sets a vertex shader constant.
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void setVertexShaderConstant(const f32* data, s32 startRegister, s32 constantAmount = 1) override;
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//! Sets a pixel shader constant.
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void setPixelShaderConstant(const f32* data, s32 startRegister, s32 constantAmount = 1) override;
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//! Sets a constant for the vertex shader based on an index.
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bool setVertexShaderConstant(s32 index, const f32* floats, int count) override;
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//! Int interface for the above.
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bool setVertexShaderConstant(s32 index, const s32* ints, int count) override;
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//! Uint interface for the above.
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bool setVertexShaderConstant(s32 index, const u32* ints, int count) override;
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//! Sets a constant for the pixel shader based on an index.
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bool setPixelShaderConstant(s32 index, const f32* floats, int count) override;
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//! Int interface for the above.
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bool setPixelShaderConstant(s32 index, const s32* ints, int count) override;
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//! Uint interface for the above.
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bool setPixelShaderConstant(s32 index, const u32* ints, int count) override;
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//! Adds a new material renderer to the VideoDriver
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virtual s32 addShaderMaterial(const c8* vertexShaderProgram, const c8* pixelShaderProgram,
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IShaderConstantSetCallBack* callback, E_MATERIAL_TYPE baseMaterial, s32 userData) override;
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//! Adds a new material renderer to the VideoDriver
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virtual s32 addHighLevelShaderMaterial(
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const c8* vertexShaderProgram,
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const c8* vertexShaderEntryPointName = 0,
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E_VERTEX_SHADER_TYPE vsCompileTarget = EVST_VS_1_1,
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const c8* pixelShaderProgram = 0,
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const c8* pixelShaderEntryPointName = 0,
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E_PIXEL_SHADER_TYPE psCompileTarget = EPST_PS_1_1,
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const c8* geometryShaderProgram = 0,
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const c8* geometryShaderEntryPointName = "main",
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E_GEOMETRY_SHADER_TYPE gsCompileTarget = EGST_GS_4_0,
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scene::E_PRIMITIVE_TYPE inType = scene::EPT_TRIANGLES,
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scene::E_PRIMITIVE_TYPE outType = scene::EPT_TRIANGLE_STRIP,
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u32 verticesOut = 0,
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IShaderConstantSetCallBack* callback = 0,
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E_MATERIAL_TYPE baseMaterial = video::EMT_SOLID,
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s32 userData=0) override;
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//! Returns pointer to the IGPUProgrammingServices interface.
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IGPUProgrammingServices* getGPUProgrammingServices() override;
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//! Returns a pointer to the IVideoDriver interface.
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IVideoDriver* getVideoDriver() override;
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//! Returns the maximum amount of primitives
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u32 getMaximalPrimitiveCount() const override;
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virtual ITexture* addRenderTargetTexture(const core::dimension2d<u32>& size,
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const io::path& name, const ECOLOR_FORMAT format = ECF_UNKNOWN) override;
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//! Creates a render target texture for a cubemap
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ITexture* addRenderTargetTextureCubemap(const irr::u32 sideLen,
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const io::path& name, const ECOLOR_FORMAT format) override;
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virtual bool setRenderTargetEx(IRenderTarget* target, u16 clearFlag, SColor clearColor = SColor(255, 0, 0, 0),
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f32 clearDepth = 1.f, u8 clearStencil = 0) override;
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void clearBuffers(u16 flag, SColor color = SColor(255, 0, 0, 0), f32 depth = 1.f, u8 stencil = 0) override;
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//! Returns an image created from the last rendered frame.
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IImage* createScreenShot(video::ECOLOR_FORMAT format=video::ECF_UNKNOWN, video::E_RENDER_TARGET target=video::ERT_FRAME_BUFFER) override;
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//! checks if an OpenGL error has happened and prints it (+ some internal code which is usually the line number)
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bool testGLError(int code=0);
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//! checks if an OGLES1 error has happened and prints it
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bool testEGLError();
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//! Set/unset a clipping plane.
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bool setClipPlane(u32 index, const core::plane3df& plane, bool enable = false) override;
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//! returns the current amount of user clip planes set.
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u32 getClipPlaneCount() const;
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//! returns the 0 indexed Plane
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const core::plane3df& getClipPlane(u32 index) const;
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//! Enable/disable a clipping plane.
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void enableClipPlane(u32 index, bool enable) override;
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//! Returns the graphics card vendor name.
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core::stringc getVendorInfo() override
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{
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return VendorName;
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};
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void removeTexture(ITexture* texture) override;
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//! Check if the driver supports creating textures with the given color format
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bool queryTextureFormat(ECOLOR_FORMAT format) const override;
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//! Used by some SceneNodes to check if a material should be rendered in the transparent render pass
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bool needsTransparentRenderPass(const irr::video::SMaterial& material) const override;
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//! Convert E_BLEND_FACTOR to OpenGL equivalent
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GLenum getGLBlend(E_BLEND_FACTOR factor) const;
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virtual bool getColorFormatParameters(ECOLOR_FORMAT format, GLint& internalFormat, GLenum& pixelFormat,
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GLenum& pixelType, void(**converter)(const void*, s32, void*)) const;
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//! Get current material.
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const SMaterial& getCurrentMaterial() const;
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COpenGL3CacheHandler* getCacheHandler() const;
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protected:
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//! inits the opengl-es driver
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virtual bool genericDriverInit(const core::dimension2d<u32>& screenSize, bool stencilBuffer);
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void chooseMaterial2D();
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ITexture* createDeviceDependentTexture(const io::path& name, IImage* image) override;
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ITexture* createDeviceDependentTextureCubemap(const io::path& name, const core::array<IImage*>& image) override;
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//! Map Irrlicht wrap mode to OpenGL enum
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GLint getTextureWrapMode(u8 clamp) const;
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//! sets the needed renderstates
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void setRenderStates3DMode();
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//! sets the needed renderstates
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void setRenderStates2DMode(bool alpha, bool texture, bool alphaChannel);
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//! Prevent setRenderStateMode calls to do anything.
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// hack to allow drawing meshbuffers in 2D mode.
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// Better solution would be passing this flag through meshbuffers,
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// but the way this is currently implemented in Irrlicht makes this tricky to implement
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void lockRenderStateMode()
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{
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LockRenderStateMode = true;
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}
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//! Allow setRenderStateMode calls to work again
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void unlockRenderStateMode()
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{
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LockRenderStateMode = false;
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}
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void draw2D3DVertexPrimitiveList(const void* vertices,
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u32 vertexCount, const void* indexList, u32 primitiveCount,
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E_VERTEX_TYPE vType, scene::E_PRIMITIVE_TYPE pType,
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E_INDEX_TYPE iType, bool is3D);
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void createMaterialRenderers();
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void loadShaderData(const io::path& vertexShaderName, const io::path& fragmentShaderName, c8** vertexShaderData, c8** fragmentShaderData);
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bool setMaterialTexture(irr::u32 layerIdx, const irr::video::ITexture* texture);
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//! Same as `CacheHandler->setViewport`, but also sets `ViewPort`
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virtual void setViewPortRaw(u32 width, u32 height);
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void drawQuad(const VertexType &vertexType, const S3DVertex (&vertices)[4]);
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void drawArrays(GLenum primitiveType, const VertexType &vertexType, const void *vertices, int vertexCount);
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void drawElements(GLenum primitiveType, const VertexType &vertexType, const void *vertices, int vertexCount, const u16 *indices, int indexCount);
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void drawElements(GLenum primitiveType, const VertexType &vertexType, uintptr_t vertices, uintptr_t indices, int indexCount);
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void beginDraw(const VertexType &vertexType, uintptr_t verticesBase);
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void endDraw(const VertexType &vertexType);
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COpenGL3CacheHandler* CacheHandler;
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core::stringw Name;
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core::stringc VendorName;
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SIrrlichtCreationParameters Params;
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//! bool to make all renderstates reset if set to true.
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bool ResetRenderStates;
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bool LockRenderStateMode;
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u8 AntiAlias;
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struct SUserClipPlane
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{
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core::plane3df Plane;
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bool Enabled;
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};
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core::array<SUserClipPlane> UserClipPlane;
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core::matrix4 TextureFlipMatrix;
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private:
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COpenGL3Renderer2D* MaterialRenderer2DActive;
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COpenGL3Renderer2D* MaterialRenderer2DTexture;
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COpenGL3Renderer2D* MaterialRenderer2DNoTexture;
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core::matrix4 Matrices[ETS_COUNT];
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//! enumeration for rendering modes such as 2d and 3d for minimizing the switching of renderStates.
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enum E_RENDER_MODE
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{
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ERM_NONE = 0, // no render state has been set yet.
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ERM_2D, // 2d drawing rendermode
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ERM_3D // 3d rendering mode
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};
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E_RENDER_MODE CurrentRenderMode;
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bool Transformation3DChanged;
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irr::io::path OGLES2ShaderPath;
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SMaterial Material, LastMaterial;
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//! Color buffer format
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ECOLOR_FORMAT ColorFormat;
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IContextManager* ContextManager;
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void addDummyMaterial(E_MATERIAL_TYPE type);
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unsigned QuadIndexCount;
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GLuint QuadIndexBuffer = 0;
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void initQuadsIndices(int max_vertex_count = 65536);
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void debugCb(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar *message);
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static void APIENTRY debugCb(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar *message, const void *userParam);
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};
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} // end namespace video
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} // end namespace irr
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