thirdpartymirrors/UnleashedRecomp
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Fix ImGui mouse position events not working at boxed aspect ratios. (#205)

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Skyth (Asilkan) 2025-01-26 17:23:29 +03:00 • committed by GitHub
parent 57e888658a
commit 81d4390076
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1 changed files with 26 additions and 2 deletions
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28
UnleashedRecomp/gpu/video.cpp
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@ -2044,6 +2044,32 @@ static void DrawProfiler()
static void DrawImGui()
{
ImGui_ImplSDL2_NewFrame();
auto& io = ImGui::GetIO();
io.DisplaySize = { float(Video::s_viewportWidth), float(Video::s_viewportHeight) };
// ImGui doesn't know that we center the screen for specific aspect ratio
// settings, which causes mouse events to not work correctly. To fix this,
// we can adjust the mouse events before ImGui processes them.
uint32_t width = g_swapChain->getWidth();
uint32_t height = g_swapChain->getHeight();
if (width != Video::s_viewportWidth || height != Video::s_viewportHeight)
{
float mousePosOffsetX = (width - Video::s_viewportWidth) / 2.0f;
float mousePosOffsetY = (height - Video::s_viewportHeight) / 2.0f;
for (int i = 0; i < io.Ctx->InputEventsQueue.Size; i++)
{
auto& e = io.Ctx->InputEventsQueue[i];
if (e.Type == ImGuiInputEventType_MousePos)
{
if (e.MousePos.PosX != -FLT_MAX) e.MousePos.PosX -= mousePosOffsetX;
if (e.MousePos.PosY != -FLT_MAX) e.MousePos.PosY -= mousePosOffsetY;
}
}
}
ImGui::NewFrame();
ResetImGuiCallbacks();
@ -2064,8 +2090,6 @@ static void DrawImGui()
ImGui::End();
#endif
ImGui::GetIO().DisplaySize = { float(Video::s_viewportWidth), float(Video::s_viewportHeight) };
AchievementMenu::Draw();
OptionsMenu::Draw();
AchievementOverlay::Draw();