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feat: add support for stretching ImGui output to window and return to selector functionality

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This commit is contained in:
moonpower
2026-02-02 00:29:25 +03:00
parent 25add6ada7
commit 7efbae3f5f
7 changed files with 104 additions and 17 deletions
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66
src/panda_sdl/frontend_sdl.cpp
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@@ -124,6 +124,24 @@ void FrontendSDL::initialize(SDL_Window* existingWindow, SDL_GLContext existingC
ScreenLayout::calculateCoordinates(
screenCoordinates, u32(windowWidth), u32(windowHeight), emu.getConfig().topScreenSize, emu.getConfig().screenLayout
);
#ifdef IMGUI_FRONTEND
if (emu.getConfig().frontendSettings.stretchImGuiOutputToWindow) {
int drawableW = 0;
int drawableH = 0;
SDL_Window* currentWindow = existingWindow ? existingWindow : SDL_GL_GetCurrentWindow();
if (currentWindow) {
SDL_GL_GetDrawableSize(currentWindow, &drawableW, &drawableH);
if (drawableW > 0 && drawableH > 0) {
windowWidth = u32(drawableW);
windowHeight = u32(drawableH);
emu.setOutputSize(windowWidth, windowHeight);
ScreenLayout::calculateCoordinates(
screenCoordinates, windowWidth, windowHeight, emu.getConfig().topScreenSize, emu.getConfig().screenLayout
);
}
}
}
#endif
if (needOpenGL) {
#ifdef IMGUI_FRONTEND
@@ -266,6 +284,12 @@ void FrontendSDL::initialize(SDL_Window* existingWindow, SDL_GLContext existingC
imgui->init();
imgui->setPauseCallback([this](bool paused) { setPaused(paused); });
imgui->setVsyncCallback([this](bool enabled) { SDL_GL_SetSwapInterval(enabled ? 1 : 0); });
imgui->setExitToSelectorCallback([this]() {
returnToSelector = true;
programRunning = false;
emu.reset(Emulator::ReloadOption::NoReload);
emu.romType = ROMType::None;
});
#endif
}
@@ -287,6 +311,23 @@ void FrontendSDL::run() {
holdingRightClick = false;
while (programRunning) {
#ifdef IMGUI_FRONTEND
const auto& cfg = emu.getConfig();
if (cfg.frontendSettings.stretchImGuiOutputToWindow) {
int drawableW = 0;
int drawableH = 0;
SDL_GL_GetDrawableSize(window, &drawableW, &drawableH);
if (drawableW > 0 && drawableH > 0) {
windowWidth = u32(drawableW);
windowHeight = u32(drawableH);
emu.setOutputSize(windowWidth, windowHeight);
ScreenLayout::calculateCoordinates(
screenCoordinates, windowWidth, windowHeight, cfg.topScreenSize, cfg.screenLayout
);
glViewport(0, 0, drawableW, drawableH);
}
}
#endif
#ifdef PANDA3DS_ENABLE_HTTP_SERVER
httpServer.processActions();
#endif
@@ -559,12 +600,19 @@ void FrontendSDL::run() {
case SDL_WINDOWEVENT: {
auto type = event.window.event;
if (type == SDL_WINDOWEVENT_RESIZED) {
windowWidth = event.window.data1;
windowHeight = event.window.data2;
int drawableW = event.window.data1;
int drawableH = event.window.data2;
#ifdef IMGUI_FRONTEND
if (emu.getConfig().frontendSettings.stretchImGuiOutputToWindow) {
SDL_GL_GetDrawableSize(window, &drawableW, &drawableH);
}
#endif
windowWidth = u32(drawableW);
windowHeight = u32(drawableH);
const auto& config = emu.getConfig();
ScreenLayout::calculateCoordinates(
screenCoordinates, u32(windowWidth), u32(windowHeight), emu.getConfig().topScreenSize, emu.getConfig().screenLayout
screenCoordinates, windowWidth, windowHeight, config.topScreenSize, config.screenLayout
);
emu.setOutputSize(windowWidth, windowHeight);
@@ -640,13 +688,23 @@ void FrontendSDL::run() {
}
#ifdef IMGUI_FRONTEND
if (imgui) {
if (imgui && !returnToSelector) {
imgui->shutdown();
imgui.reset();
}
#endif
}
#ifdef IMGUI_FRONTEND
bool FrontendSDL::consumeReturnToSelector() {
if (!returnToSelector) {
return false;
}
returnToSelector = false;
return true;
}
#endif
void FrontendSDL::setupControllerSensors(SDL_GameController* controller) {
bool haveGyro = SDL_GameControllerHasSensor(controller, SDL_SENSOR_GYRO) == SDL_TRUE;
bool haveAccelerometer = SDL_GameControllerHasSensor(controller, SDL_SENSOR_ACCEL) == SDL_TRUE;