GL3Renderer.h

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#pragma once
 
#if defined (__APPLE__)
    #include <OpenCL/opencl.h>
#endif
 
#include <array>
#include <string>
#include <unordered_map>
#include <vector>
 
#include <tdme/tdme.h>
#include <tdme/engine/fileio/textures/fwd-tdme.h>
#include <tdme/engine/fwd-tdme.h>
#include <tdme/engine/subsystems/renderer/Renderer.h>
#include <tdme/utilities/fwd-tdme.h>
 
using std::array;
using std::string;
using std::unordered_map;
using std::vector;
 
using tdme::engine::Texture;
using tdme::engine::subsystems::renderer::Renderer;
using tdme::engine::FrameBuffer;
using tdme::utilities::ByteBuffer;
using tdme::utilities::FloatBuffer;
using tdme::utilities::IntBuffer;
using tdme::utilities::ShortBuffer;
 
/**
 * OpenGL 3 renderer
 * @author Andreas Drewke
 */
class tdme::engine::subsystems::renderer::GL3Renderer: public Renderer
{
private:
    uint32_t engineVAO;
    unordered_map<uint32_t, int32_t> vbosUsage;
    int activeTextureUnit;
    #if defined (__APPLE__) && !defined(__aarch64__)
        struct CLSkinningParameters {
            array<int32_t, 8> boundGLBuffers { -1, -1, -1, -1, -1, -1, -1, -1 };
            array<bool, 8> boundGLBuffersWrite { false, false, false, false, false, false, false, false };
            int32_t matrixCount { 0 };
            int32_t instanceCount { 0 };
            int32_t vertexCount { 0 };
            int32_t numGroupsX { 0 };
            int32_t numGroupsY { 0 };
        };
        cl_context clContext;
        cl_program clSkinningKernelProgram;
        cl_kernel clSkinningKernel;
        cl_command_queue clCommandQueue;
        CLSkinningParameters clSkinningParameters;
 
        /**
         * OpenCL bind GL buffer
         * @param idx argument index
         * @param bufferObjectId OpenGL buffer object id
         * @param write write
         */
        void clBindGLBuffer(int32_t idx, int32_t bufferObjectId, bool write);
 
        /**
         * OpenCL error callback
         * @param errorInfo error info
         * @param privateInfo private info
         * @param cb cb?
         * @param userData user data
         */
        static void clErrorCallback(const char* errorInfo, const void* privateInfo, size_t cb, void* userData);
    #endif
 
    bool deferredShadingAvailable;
    bool textureCompressionAvailable;
 
public:
    // forbid class copy
    FORBID_CLASS_COPY(GL3Renderer)
 
    /**
     * Public constructor
     */
    GL3Renderer();
 
    // overridden methods
    void initialize() override;
    void initializeFrame() override;
    void finishFrame() override;
    const string getVendor() override;
    const string getRenderer() override;
    const string getShaderVersion() override;
    bool isSupportingMultithreadedRendering() override;
    bool isTextureCompressionAvailable() override;
    bool isUsingProgramAttributeLocation() override;
    bool isSupportingIntegerProgramAttributes() override;
    bool isSpecularMappingAvailable() override;
    bool isNormalMappingAvailable() override;
    bool isInstancedRenderingAvailable() override;
    bool isPBRAvailable() override;
    bool isComputeShaderAvailable() override;
    bool isGLCLAvailable() override;
    bool isUsingShortIndices() override;
    bool isDeferredShadingAvailable() override;
    int32_t getTextureUnits() override;
    int32_t loadShader(int32_t type, const string& pathName, const string& fileName, const string& definitions = string(), const string& functions = string()) override;
    void useProgram(int contextIdx, int32_t programId) override;
    int32_t createProgram(int type) override;
    void attachShaderToProgram(int32_t programId, int32_t shaderId) override;
    bool linkProgram(int32_t programId) override;
    int32_t getProgramUniformLocation(int32_t programId, const string& name) override;
    void setProgramUniformInteger(int contextIdx, int32_t uniformId, int32_t value) override;
    void setProgramUniformFloat(int contextIdx, int32_t uniformId, float value) override;
    void setProgramUniformFloatMatrix3x3(int contextIdx, int32_t uniformId, const array<float, 9>& data) override;
    void setProgramUniformFloatMatrix4x4(int contextIdx, int32_t uniformId, const array<float, 16>& data) override;
    void setProgramUniformFloatMatrices4x4(int contextIdx, int32_t uniformId, int32_t count, FloatBuffer* data) override;
    void setProgramUniformFloatVec4(int contextIdx, int32_t uniformId, const array<float, 4>& data) override;
    void setProgramUniformFloatVec3(int contextIdx, int32_t uniformId, const array<float, 3>& data) override;
    void setProgramUniformFloatVec2(int contextIdx, int32_t uniformId, const array<float, 2>& data) override;
    void setProgramAttributeLocation(int32_t programId, int32_t location, const string& name) override;
    void setViewPort(int32_t width, int32_t height) override;
    void updateViewPort() override;
    void setClearColor(float red, float green, float blue, float alpha) override;
    void enableCulling(int contextIdx) override;
    void disableCulling(int contextIdx) override;
    void setFrontFace(int contextIdx, int32_t frontFace) override;
    void setCullFace(int32_t cullFace) override;
    void enableBlending() override;
    void enableAdditionBlending() override;
    void disableBlending() override;
    void enableDepthBufferWriting() override;
    void disableDepthBufferWriting() override;
    void disableDepthBufferTest() override;
    void enableDepthBufferTest() override;
    void setDepthFunction(int32_t depthFunction) override;
    void setColorMask(bool red, bool green, bool blue, bool alpha) override;
    void clear(int32_t mask) override;
    int32_t createTexture() override;
    int32_t createDepthBufferTexture(int32_t width, int32_t height, int32_t cubeMapTextureId, int32_t cubeMapTextureIndex) override;
    int32_t createColorBufferTexture(int32_t width, int32_t height, int32_t cubeMapTextureId, int32_t cubeMapTextureIndex) override;
    int32_t createGBufferGeometryTexture(int32_t width, int32_t height) override;
    int32_t createGBufferColorTexture(int32_t width, int32_t height) override;
    void uploadTexture(int contextIdx, Texture* texture) override;
    void uploadCubeMapTexture(int contextIdx, Texture* textureLeft, Texture* textureRight, Texture* textureTop, Texture* textureBottom, Texture* textureFront, Texture* textureBack) override;
    int32_t createCubeMapTexture(int contextIdx, int32_t width, int32_t height) override;
    void resizeDepthBufferTexture(int32_t textureId, int32_t width, int32_t height) override;
    void resizeColorBufferTexture(int32_t textureId, int32_t width, int32_t height) override;
    void resizeGBufferGeometryTexture(int32_t textureId, int32_t width, int32_t height) override;
    void resizeGBufferColorTexture(int32_t textureId, int32_t width, int32_t height) override;
    void bindTexture(int contextIdx, int32_t textureId) override;
    void bindCubeMapTexture(int contextIdx, int32_t textureId) override;
    void disposeTexture(int32_t textureId) override;
    int32_t createFramebufferObject(int32_t depthBufferTextureId, int32_t colorBufferTextureId, int32_t cubeMapTextureId = 0, int32_t cubeMapTextureIndex = 0) override;
    int32_t createGeometryBufferObject(
        int32_t depthBufferTextureId,
        int32_t geometryBufferTextureId1,
        int32_t geometryBufferTextureId2,
        int32_t geometryBufferTextureId3,
        int32_t colorBufferTextureId1,
        int32_t colorBufferTextureId2,
        int32_t colorBufferTextureId3,
        int32_t colorBufferTextureId4,
        int32_t colorBufferTextureId5
    ) override;
    void bindFrameBuffer(int32_t frameBufferId) override;
    void disposeFrameBufferObject(int32_t frameBufferId) override;
    vector<int32_t> createBufferObjects(int32_t buffers, bool useGPUMemory, bool shared) override;
    void uploadBufferObject(int contextIdx, int32_t bufferObjectId, int32_t size, FloatBuffer* data) override;
    void uploadBufferObject(int contextIdx, int32_t bufferObjectId, int32_t size, ShortBuffer* data) override;
    void uploadBufferObject(int contextIdx, int32_t bufferObjectId, int32_t size, IntBuffer* data) override;
    void uploadIndicesBufferObject(int contextIdx, int32_t bufferObjectId, int32_t size, ShortBuffer* data) override;
    void uploadIndicesBufferObject(int contextIdx, int32_t bufferObjectId, int32_t size, IntBuffer* data) override;
    void bindIndicesBufferObject(int contextIdx, int32_t bufferObjectId) override;
    void bindSolidColorsBufferObject(int contextIdx, int32_t bufferObjectId) override;
    void bindTextureCoordinatesBufferObject(int contextIdx, int32_t bufferObjectId) override;
    void bindVerticesBufferObject(int contextIdx, int32_t bufferObjectId) override;
    void bindVertices2BufferObject(int contextIdx, int32_t bufferObjectId) override;
    void bindNormalsBufferObject(int contextIdx, int32_t bufferObjectId) override;
    void bindColorsBufferObject(int contextIdx, int32_t bufferObjectId) override;
    void bindTangentsBufferObject(int contextIdx, int32_t bufferObjectId) override;
    void bindBitangentsBufferObject(int contextIdx, int32_t bufferObjectId) override;
    void bindModelMatricesBufferObject(int contextIdx, int32_t bufferObjectId) override;
    void bindEffectColorMulsBufferObject(int contextIdx, int32_t bufferObjectId, int32_t divisor) override;
    void bindEffectColorAddsBufferObject(int contextIdx, int32_t bufferObjectId, int32_t divisor) override;
    void bindOriginsBufferObject(int contextIdx, int32_t bufferObjectId) override;
    void bindTextureSpriteIndicesBufferObject(int contextIdx, int32_t bufferObjectId) override;
    void bindPointSizesBufferObject(int contextIdx, int32_t bufferObjectId) override;
    void bindSpriteSheetDimensionBufferObject(int contextIdx, int32_t bufferObjectId) override;
    void drawInstancedIndexedTrianglesFromBufferObjects(int contextIdx, int32_t triangles, int32_t trianglesOffset, int32_t instances) override;
    void drawIndexedTrianglesFromBufferObjects(int contextIdx, int32_t triangles, int32_t trianglesOffset) override;
    void drawInstancedTrianglesFromBufferObjects(int contextIdx, int32_t triangles, int32_t trianglesOffset, int32_t instances) override;
    void drawTrianglesFromBufferObjects(int contextIdx, int32_t triangles, int32_t trianglesOffset) override;
    void drawPointsFromBufferObjects(int contextIdx, int32_t points, int32_t pointsOffset) override;
    void setLineWidth(float lineWidth) override;
    void drawLinesFromBufferObjects(int contextIdx, int32_t points, int32_t pointsOffset) override;
    void unbindBufferObjects(int contextIdx) override;
    void disposeBufferObjects(vector<int32_t>& bufferObjectIds) override;
    int32_t getTextureUnit(int contextIdx) override;
    void setTextureUnit(int contextIdx, int32_t textureUnit) override;
    float readPixelDepth(int32_t x, int32_t y) override;
    ByteBuffer* readPixels(int32_t x, int32_t y, int32_t width, int32_t height) override;
    void initGuiMode() override;
    void doneGuiMode() override;
    void dispatchCompute(int contextIdx, int32_t numGroupsX, int32_t numGroupsY, int32_t numGroupsZ) override;
    void memoryBarrier() override;
    void uploadSkinningBufferObject(int contextIdx, int32_t bufferObjectId, int32_t size, FloatBuffer* data) override;
    void uploadSkinningBufferObject(int contextIdx, int32_t bufferObjectId, int32_t size, IntBuffer* data) override;
    void bindSkinningVerticesBufferObject(int contextIdx, int32_t bufferObjectId) override;
    void bindSkinningNormalsBufferObject(int contextIdx, int32_t bufferObjectId) override;
    void bindSkinningVertexJointsBufferObject(int contextIdx, int32_t bufferObjectId) override;
    void bindSkinningVertexJointIdxsBufferObject(int contextIdx, int32_t bufferObjectId) override;
    void bindSkinningVertexJointWeightsBufferObject(int contextIdx, int32_t bufferObjectId) override;
    void bindSkinningVerticesResultBufferObject(int contextIdx, int32_t bufferObjectId) override;
    void bindSkinningNormalsResultBufferObject(int contextIdx, int32_t bufferObjectId) override;
    void bindSkinningMatricesBufferObject(int contextIdx, int32_t bufferObjectId) override;
    void setVSync(bool vSync) override;
    const Renderer_Statistics getStatistics() override;
 
private:
 
    /**
     * Checks if GL error did occour
     */
    void checkGLError(int line);
};