irrlicht/source/Irrlicht/OpenGL/Driver.h

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