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// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <vector>
#include <glad/glad.h>
#include "common/common_types.h"
#include "common/math_util.h"
#include "video_core/renderer_base.h"
#include "video_core/renderer_opengl/gl_resource_manager.h"
#include "video_core/renderer_opengl/gl_state.h"
class EmuWindow;
/// Structure used for storing information about the textures for the Switch screen
struct TextureInfo {
OGLTexture resource;
GLsizei width;
GLsizei height;
GLenum gl_format;
GLenum gl_type;
Tegra::FramebufferConfig::PixelFormat pixel_format;
};
/// Structure used for storing information about the display target for the Switch screen
struct ScreenInfo {
GLuint display_texture;
const MathUtil::Rectangle<float> display_texcoords{0.0f, 0.0f, 1.0f, 1.0f};
TextureInfo texture;
};
/// Helper class to acquire/release OpenGL context within a given scope
class ScopeAcquireGLContext : NonCopyable {
public:
explicit ScopeAcquireGLContext(EmuWindow& window);
~ScopeAcquireGLContext();
private:
EmuWindow& emu_window;
};
class RendererOpenGL : public RendererBase {
public:
explicit RendererOpenGL(EmuWindow& window);
~RendererOpenGL() override;
/// Swap buffers (render frame)
void SwapBuffers(boost::optional<const Tegra::FramebufferConfig&> framebuffer) override;
/// Initialize the renderer
bool Init() override;
/// Shutdown the renderer
void ShutDown() override;
private:
void InitOpenGLObjects();
void ConfigureFramebufferTexture(TextureInfo& texture,
const Tegra::FramebufferConfig& framebuffer);
void DrawScreen();
void DrawScreenTriangles(const ScreenInfo& screen_info, float x, float y, float w, float h);
void UpdateFramerate();
// Loads framebuffer from emulated memory into the display information structure
void LoadFBToScreenInfo(const Tegra::FramebufferConfig& framebuffer, ScreenInfo& screen_info);
// Fills active OpenGL texture with the given RGBA color.
void LoadColorToActiveGLTexture(u8 color_r, u8 color_g, u8 color_b, u8 color_a,
const TextureInfo& texture);
OpenGLState state;
// OpenGL object IDs
OGLVertexArray vertex_array;
OGLBuffer vertex_buffer;
OGLProgram shader;
/// Display information for Switch screen
ScreenInfo screen_info;
/// OpenGL framebuffer data
std::vector<u8> gl_framebuffer_data;
// Shader uniform location indices
GLuint uniform_modelview_matrix;
GLuint uniform_color_texture;
// Shader attribute input indices
GLuint attrib_position;
GLuint attrib_tex_coord;
/// Used for transforming the framebuffer orientation
Tegra::FramebufferConfig::TransformFlags framebuffer_transform_flags;
MathUtil::Rectangle<int> framebuffer_crop_rect;
};
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