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citra-nightly/src/citra/emu_window/emu_window_sdl2.cpp
emufan4568 025cd31420 video_core: Bump OpenGL version to 4.3 on desktop 
* The current backend heavily depends on many extensions for shadow
  rendering and texture cubes in the fragment shaders. All these
  extensions were incorporated to core in 4.3. Support is practically
  ubiquitous and requiring support for it makes things a lot easier
2022-08-21 01:39:16 +03:00

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// Copyright 2016 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <algorithm>
#include <cstdlib>
#include <string>
#define SDL_MAIN_HANDLED
#include <SDL.h>
#include <fmt/format.h>
#include <glad/glad.h>
#include "citra/emu_window/emu_window_sdl2.h"
#include "common/logging/log.h"
#include "common/scm_rev.h"
#include "core/3ds.h"
#include "core/core.h"
#include "core/settings.h"
#include "input_common/keyboard.h"
#include "input_common/main.h"
#include "input_common/motion_emu.h"
#include "input_common/sdl/sdl.h"
#include "network/network.h"
#include "video_core/renderer_base.h"
#include "video_core/video_core.h"
SharedContext_SDL2::SharedContext_SDL2() {
window = SDL_CreateWindow(NULL, SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, 0, 0,
SDL_WINDOW_HIDDEN | SDL_WINDOW_OPENGL);
context = SDL_GL_CreateContext(window);
}
SharedContext_SDL2::~SharedContext_SDL2() {
SDL_GL_DeleteContext(context);
SDL_DestroyWindow(window);
}
void SharedContext_SDL2::MakeCurrent() {
SDL_GL_MakeCurrent(window, context);
}
void SharedContext_SDL2::DoneCurrent() {
SDL_GL_MakeCurrent(window, nullptr);
}
void EmuWindow_SDL2::OnMouseMotion(s32 x, s32 y) {
TouchMoved((unsigned)std::max(x, 0), (unsigned)std::max(y, 0));
InputCommon::GetMotionEmu()->Tilt(x, y);
}
void EmuWindow_SDL2::OnMouseButton(u32 button, u8 state, s32 x, s32 y) {
if (button == SDL_BUTTON_LEFT) {
if (state == SDL_PRESSED) {
TouchPressed((unsigned)std::max(x, 0), (unsigned)std::max(y, 0));
} else {
TouchReleased();
}
} else if (button == SDL_BUTTON_RIGHT) {
if (state == SDL_PRESSED) {
InputCommon::GetMotionEmu()->BeginTilt(x, y);
} else {
InputCommon::GetMotionEmu()->EndTilt();
}
}
}
std::pair<unsigned, unsigned> EmuWindow_SDL2::TouchToPixelPos(float touch_x, float touch_y) const {
int w, h;
SDL_GetWindowSize(render_window, &w, &h);
touch_x *= w;
touch_y *= h;
return {static_cast<unsigned>(std::max(std::round(touch_x), 0.0f)),
static_cast<unsigned>(std::max(std::round(touch_y), 0.0f))};
}
void EmuWindow_SDL2::OnFingerDown(float x, float y) {
// TODO(NeatNit): keep track of multitouch using the fingerID and a dictionary of some kind
// This isn't critical because the best we can do when we have that is to average them, like the
// 3DS does
const auto [px, py] = TouchToPixelPos(x, y);
TouchPressed(px, py);
}
void EmuWindow_SDL2::OnFingerMotion(float x, float y) {
const auto [px, py] = TouchToPixelPos(x, y);
TouchMoved(px, py);
}
void EmuWindow_SDL2::OnFingerUp() {
TouchReleased();
}
void EmuWindow_SDL2::OnKeyEvent(int key, u8 state) {
if (state == SDL_PRESSED) {
InputCommon::GetKeyboard()->PressKey(key);
} else if (state == SDL_RELEASED) {
InputCommon::GetKeyboard()->ReleaseKey(key);
}
}
bool EmuWindow_SDL2::IsOpen() const {
return is_open;
}
void EmuWindow_SDL2::OnResize() {
int width, height;
SDL_GetWindowSize(render_window, &width, &height);
UpdateCurrentFramebufferLayout(width, height);
}
void EmuWindow_SDL2::Fullscreen() {
if (SDL_SetWindowFullscreen(render_window, SDL_WINDOW_FULLSCREEN) == 0) {
return;
}
LOG_ERROR(Frontend, "Fullscreening failed: {}", SDL_GetError());
// Try a different fullscreening method
LOG_INFO(Frontend, "Attempting to use borderless fullscreen...");
if (SDL_SetWindowFullscreen(render_window, SDL_WINDOW_FULLSCREEN_DESKTOP) == 0) {
return;
}
LOG_ERROR(Frontend, "Borderless fullscreening failed: {}", SDL_GetError());
// Fallback algorithm: Maximise window.
// Works on all systems (unless something is seriously wrong), so no fallback for this one.
LOG_INFO(Frontend, "Falling back on a maximised window...");
SDL_MaximizeWindow(render_window);
}
EmuWindow_SDL2::EmuWindow_SDL2(bool fullscreen) {
// Initialize the window
if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_GAMECONTROLLER) < 0) {
LOG_CRITICAL(Frontend, "Failed to initialize SDL2! Exiting...");
exit(1);
}
InputCommon::Init();
Network::Init();
SDL_SetMainReady();
if (Settings::values.use_gles) {
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 2);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_ES);
} else {
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 4);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 3);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE);
}
SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_ALPHA_SIZE, 0);
// Enable context sharing for the shared context
SDL_GL_SetAttribute(SDL_GL_SHARE_WITH_CURRENT_CONTEXT, 1);
// Enable vsync
SDL_GL_SetSwapInterval(1);
std::string window_title = fmt::format("Citra {} | {}-{}", Common::g_build_fullname,
Common::g_scm_branch, Common::g_scm_desc);
render_window =
SDL_CreateWindow(window_title.c_str(),
SDL_WINDOWPOS_UNDEFINED, // x position
SDL_WINDOWPOS_UNDEFINED, // y position
Core::kScreenTopWidth, Core::kScreenTopHeight + Core::kScreenBottomHeight,
SDL_WINDOW_OPENGL | SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALLOW_HIGHDPI);
if (render_window == nullptr) {
LOG_CRITICAL(Frontend, "Failed to create SDL2 window: {}", SDL_GetError());
exit(1);
}
dummy_window = SDL_CreateWindow(NULL, SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, 0, 0,
SDL_WINDOW_HIDDEN | SDL_WINDOW_OPENGL);
if (fullscreen) {
Fullscreen();
}
window_context = SDL_GL_CreateContext(render_window);
core_context = CreateSharedContext();
last_saved_context = nullptr;
if (window_context == nullptr) {
LOG_CRITICAL(Frontend, "Failed to create SDL2 GL context: {}", SDL_GetError());
exit(1);
}
if (core_context == nullptr) {
LOG_CRITICAL(Frontend, "Failed to create shared SDL2 GL context: {}", SDL_GetError());
exit(1);
}
auto gl_load_func = Settings::values.use_gles ? gladLoadGLES2Loader : gladLoadGLLoader;
if (!gl_load_func(static_cast<GLADloadproc>(SDL_GL_GetProcAddress))) {
LOG_CRITICAL(Frontend, "Failed to initialize GL functions: {}", SDL_GetError());
exit(1);
}
OnResize();
OnMinimalClientAreaChangeRequest(GetActiveConfig().min_client_area_size);
SDL_PumpEvents();
LOG_INFO(Frontend, "Citra Version: {} | {}-{}", Common::g_build_fullname, Common::g_scm_branch,
Common::g_scm_desc);
Settings::LogSettings();
}
EmuWindow_SDL2::~EmuWindow_SDL2() {
core_context.reset();
Network::Shutdown();
InputCommon::Shutdown();
SDL_GL_DeleteContext(window_context);
SDL_Quit();
}
std::unique_ptr<Frontend::GraphicsContext> EmuWindow_SDL2::CreateSharedContext() const {
return std::make_unique<SharedContext_SDL2>();
}
void EmuWindow_SDL2::SaveContext() {
last_saved_context = SDL_GL_GetCurrentContext();
}
void EmuWindow_SDL2::RestoreContext() {
SDL_GL_MakeCurrent(render_window, last_saved_context);
}
void EmuWindow_SDL2::Present() {
SDL_GL_MakeCurrent(render_window, window_context);
SDL_GL_SetSwapInterval(1);
while (IsOpen()) {
VideoCore::g_renderer->TryPresent(100);
SDL_GL_SwapWindow(render_window);
}
SDL_GL_MakeCurrent(render_window, nullptr);
}
void EmuWindow_SDL2::PollEvents() {
SDL_Event event;
// SDL_PollEvent returns 0 when there are no more events in the event queue
while (SDL_PollEvent(&event)) {
switch (event.type) {
case SDL_WINDOWEVENT:
switch (event.window.event) {
case SDL_WINDOWEVENT_SIZE_CHANGED:
case SDL_WINDOWEVENT_RESIZED:
case SDL_WINDOWEVENT_MAXIMIZED:
case SDL_WINDOWEVENT_RESTORED:
case SDL_WINDOWEVENT_MINIMIZED:
OnResize();
break;
case SDL_WINDOWEVENT_CLOSE:
is_open = false;
break;
}
break;
case SDL_KEYDOWN:
case SDL_KEYUP:
OnKeyEvent(static_cast<int>(event.key.keysym.scancode), event.key.state);
break;
case SDL_MOUSEMOTION:
// ignore if it came from touch
if (event.button.which != SDL_TOUCH_MOUSEID)
OnMouseMotion(event.motion.x, event.motion.y);
break;
case SDL_MOUSEBUTTONDOWN:
case SDL_MOUSEBUTTONUP:
// ignore if it came from touch
if (event.button.which != SDL_TOUCH_MOUSEID) {
OnMouseButton(event.button.button, event.button.state, event.button.x,
event.button.y);
}
break;
case SDL_FINGERDOWN:
OnFingerDown(event.tfinger.x, event.tfinger.y);
break;
case SDL_FINGERMOTION:
OnFingerMotion(event.tfinger.x, event.tfinger.y);
break;
case SDL_FINGERUP:
OnFingerUp();
break;
case SDL_QUIT:
is_open = false;
break;
default:
break;
}
}
const u32 current_time = SDL_GetTicks();
if (current_time > last_time + 2000) {
const auto results = Core::System::GetInstance().GetAndResetPerfStats();
const auto title =
fmt::format("Citra {} | {}-{} | FPS: {:.0f} ({:.0f}%)", Common::g_build_fullname,
Common::g_scm_branch, Common::g_scm_desc, results.game_fps,
results.emulation_speed * 100.0f);
SDL_SetWindowTitle(render_window, title.c_str());
last_time = current_time;
}
}
void EmuWindow_SDL2::MakeCurrent() {
core_context->MakeCurrent();
}
void EmuWindow_SDL2::DoneCurrent() {
core_context->DoneCurrent();
}
void EmuWindow_SDL2::OnMinimalClientAreaChangeRequest(std::pair<u32, u32> minimal_size) {
SDL_SetWindowMinimumSize(render_window, minimal_size.first, minimal_size.second);
}
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