89 lines
2.6 KiB
C++
89 lines
2.6 KiB
C++
// Copyright 2014 Citra Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#pragma once
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#include <array>
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#include <glad/glad.h>
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#include "common/common_types.h"
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#include "common/math_util.h"
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#include "core/hw/gpu.h"
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#include "video_core/renderer_base.h"
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#include "video_core/renderer_opengl/gl_resource_manager.h"
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#include "video_core/renderer_opengl/gl_state.h"
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class EmuWindow;
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/// Structure used for storing information about the textures for each 3DS screen
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struct TextureInfo {
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OGLTexture resource;
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GLsizei width;
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GLsizei height;
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GPU::Regs::PixelFormat format;
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GLenum gl_format;
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GLenum gl_type;
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};
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/// Structure used for storing information about the display target for each 3DS screen
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struct ScreenInfo {
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GLuint display_texture;
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MathUtil::Rectangle<float> display_texcoords;
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TextureInfo texture;
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};
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class RendererOpenGL : public RendererBase {
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public:
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RendererOpenGL();
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~RendererOpenGL() override;
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/// Swap buffers (render frame)
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void SwapBuffers() override;
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/**
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* Set the emulator window to use for renderer
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* @param window EmuWindow handle to emulator window to use for rendering
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*/
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void SetWindow(EmuWindow* window) override;
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/// Initialize the renderer
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bool Init() override;
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/// Shutdown the renderer
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void ShutDown() override;
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private:
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void InitOpenGLObjects();
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void ConfigureFramebufferTexture(TextureInfo& texture,
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const GPU::Regs::FramebufferConfig& framebuffer);
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void DrawScreens();
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void DrawSingleScreenRotated(const ScreenInfo& screen_info, float x, float y, float w, float h);
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void UpdateFramerate();
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// Loads framebuffer from emulated memory into the display information structure
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void LoadFBToScreenInfo(const GPU::Regs::FramebufferConfig& framebuffer,
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ScreenInfo& screen_info);
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// Fills active OpenGL texture with the given RGB color.
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void LoadColorToActiveGLTexture(u8 color_r, u8 color_g, u8 color_b, const TextureInfo& texture);
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EmuWindow* render_window; ///< Handle to render window
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OpenGLState state;
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// OpenGL object IDs
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OGLVertexArray vertex_array;
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OGLBuffer vertex_buffer;
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OGLProgram shader;
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/// Display information for top and bottom screens respectively
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std::array<ScreenInfo, 2> screen_infos;
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// Shader uniform location indices
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GLuint uniform_modelview_matrix;
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GLuint uniform_color_texture;
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// Shader attribute input indices
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GLuint attrib_position;
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GLuint attrib_tex_coord;
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};
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