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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_device.h"
#include "video_core/renderer_opengl/gl_resource_manager.h"
#include "video_core/renderer_opengl/gl_shader_manager.h"
#include "video_core/renderer_opengl/gl_state_tracker.h"
namespace Core {
class System;
class TelemetrySession;
} // namespace Core
namespace Core::Frontend {
class EmuWindow;
}
namespace Core::Memory {
class Memory;
}
namespace Layout {
struct FramebufferLayout;
}
namespace Tegra {
class GPU;
}
namespace OpenGL {
/// 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{};
bool display_srgb{};
const Common::Rectangle<float> display_texcoords{0.0f, 0.0f, 1.0f, 1.0f};
TextureInfo texture;
};
struct PresentationTexture {
u32 width = 0;
u32 height = 0;
OGLTexture texture;
};
class FrameMailbox;
class RendererOpenGL final : public VideoCore::RendererBase {
public:
explicit RendererOpenGL(Core::TelemetrySession& telemetry_session,
Core::Frontend::EmuWindow& emu_window, Core::Memory::Memory& cpu_memory,
Tegra::GPU& gpu,
std::unique_ptr<Core::Frontend::GraphicsContext> context);
~RendererOpenGL() override;
bool Init() override;
void ShutDown() override;
void SwapBuffers(const Tegra::FramebufferConfig* framebuffer) override;
bool TryPresent(int timeout_ms) override;
private:
/// Initializes the OpenGL state and creates persistent objects.
void InitOpenGLObjects();
void AddTelemetryFields();
void CreateRasterizer();
void ConfigureFramebufferTexture(TextureInfo& texture,
const Tegra::FramebufferConfig& framebuffer);
/// Draws the emulated screens to the emulator window.
void DrawScreen(const Layout::FramebufferLayout& layout);
void RenderScreenshot();
/// Loads framebuffer from emulated memory into the active OpenGL texture.
void LoadFBToScreenInfo(const Tegra::FramebufferConfig& framebuffer);
/// Fills active OpenGL texture with the given RGB color.Since the color is solid, the texture
/// can be 1x1 but will stretch across whatever it's rendered on.
void LoadColorToActiveGLTexture(u8 color_r, u8 color_g, u8 color_b, u8 color_a,
const TextureInfo& texture);
void PrepareRendertarget(const Tegra::FramebufferConfig* framebuffer);
bool Present(int timeout_ms);
Core::TelemetrySession& telemetry_session;
Core::Frontend::EmuWindow& emu_window;
Core::Memory::Memory& cpu_memory;
Tegra::GPU& gpu;
const Device device;
StateTracker state_tracker{gpu};
// OpenGL object IDs
OGLBuffer vertex_buffer;
OGLProgram vertex_program;
OGLProgram fragment_program;
OGLPipeline pipeline;
OGLFramebuffer screenshot_framebuffer;
// GPU address of the vertex buffer
GLuint64EXT vertex_buffer_address = 0;
/// Display information for Switch screen
ScreenInfo screen_info;
/// Global dummy shader pipeline
ProgramManager program_manager;
/// OpenGL framebuffer data
std::vector<u8> gl_framebuffer_data;
/// Used for transforming the framebuffer orientation
Tegra::FramebufferConfig::TransformFlags framebuffer_transform_flags{};
Common::Rectangle<int> framebuffer_crop_rect;
/// Frame presentation mailbox
std::unique_ptr<FrameMailbox> frame_mailbox;
bool has_debug_tool = false;
};
} // namespace OpenGL
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