Method Initialize

Source/Engine/StratusGraphicsDriver.cpp:81–182

    }

    bool GraphicsDriver::Initialize() {
        SDL_Window * window = (SDL_Window *)Window::Instance()->GetWindowObject();

        // Set the profile to core as opposed to compatibility mode
        SDL_GL_SetAttribute(SDL_GLattr::SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE);
        // Set max/min version
        //SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 4);
        //SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 6);
        // Enable double buffering
        SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);

        // Create the gl context
        STRATUS_LOG << "Creating OpenGL context" << std::endl;
        GraphicsContext& context = GetContext();
        context.context = SDL_GL_CreateContext(window);
        if (context.context == nullptr) {
            STRATUS_ERROR << "Unable to create a valid OpenGL context" << std::endl;
            STRATUS_ERROR << SDL_GetError() << std::endl;
            return false;
        }

        // Init gl core profile using gl3w
        if (gl3wInit()) {
            STRATUS_ERROR << "Failed to initialize core OpenGL profile" << std::endl;
            return false;
        }

        //if (!gl3wIsSupported(maxGLVersion, minGLVersion)) {
        //    STRATUS_ERROR << "[error] OpenGL 3.2 not supported" << std::endl;
        //    _isValid = false;
        //    return;
        //}

        // Query OpenGL about various different hardware capabilities
        context.config.renderer = (const char *)glGetString(GL_RENDERER);
        context.config.version = (const char *)glGetString(GL_VERSION);
        glGetIntegerv(GL_MINOR_VERSION, &context.config.minorVersion);
        glGetIntegerv(GL_MAJOR_VERSION, &context.config.majorVersion);
        glGetFloatv(GL_MAX_TEXTURE_MAX_ANISOTROPY, &context.config.maxAnisotropy);
        glGetIntegerv(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS, &context.config.maxCombinedTextures);
        glGetIntegerv(GL_MAX_CUBE_MAP_TEXTURE_SIZE, &context.config.maxCubeMapTextureSize);
        glGetIntegerv(GL_MAX_FRAGMENT_UNIFORM_VECTORS, &context.config.maxFragmentUniformVectors);
        glGetIntegerv(GL_MAX_RENDERBUFFER_SIZE, &context.config.maxRenderbufferSize);
        glGetIntegerv(GL_MAX_TEXTURE_IMAGE_UNITS, &context.config.maxTextureImageUnits);
        glGetIntegerv(GL_MAX_TEXTURE_SIZE, &context.config.maxTextureSize1D2D);
        glGetIntegerv(GL_MAX_3D_TEXTURE_SIZE, &context.config.maxTextureSize3D);
        glGetIntegerv(GL_MAX_CUBE_MAP_TEXTURE_SIZE, &context.config.maxTextureSizeCubeMap);
        glGetIntegerv(GL_MAX_VERTEX_ATTRIBS, &context.config.maxVertexAttribs);
        glGetIntegerv(GL_MAX_VERTEX_UNIFORM_VECTORS, &context.config.maxVertexUniformVectors);
        glGetIntegerv(GL_MAX_DRAW_BUFFERS, &context.config.maxDrawBuffers);
        glGetIntegerv(GL_MAX_FRAGMENT_UNIFORM_COMPONENTS, &context.config.maxFragmentUniformComponents);
        glGetIntegerv(GL_MAX_VERTEX_UNIFORM_COMPONENTS, &context.config.maxVertexUniformComponents);
        glGetIntegerv(GL_MAX_VARYING_FLOATS, &context.config.maxVaryingFloats);
        glGetIntegerv(GL_MAX_VIEWPORT_DIMS, context.config.maxViewportDims);
        glGetIntegerv(GL_MAX_COMPUTE_SHADER_STORAGE_BLOCKS, &context.config.maxComputeShaderStorageBlocks);
        glGetIntegerv(GL_MAX_COMPUTE_UNIFORM_BLOCKS, &context.config.maxComputeUniformBlocks);
        glGetIntegerv(GL_MAX_COMPUTE_TEXTURE_IMAGE_UNITS, &context.config.maxComputeTexImageUnits);
        glGetIntegerv(GL_MAX_COMPUTE_UNIFORM_COMPONENTS, &context.config.maxComputeUniformComponents);