e32bf646cf
Treating it as a u16 can result in a sign-conversion warning when performing arithmetic with it, as u16 promotes to an int when aritmetic is performed on it, not unsigned int. This also makes the interface more uniform, as the layout interface now operates on u32 across the board.
61 lines
2.2 KiB
C++
61 lines
2.2 KiB
C++
// Copyright 2018 yuzu emulator team
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#include <cmath>
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#include "common/assert.h"
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#include "core/frontend/framebuffer_layout.h"
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#include "core/settings.h"
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namespace Layout {
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// Finds the largest size subrectangle contained in window area that is confined to the aspect ratio
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template <class T>
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static Common::Rectangle<T> MaxRectangle(Common::Rectangle<T> window_area,
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float screen_aspect_ratio) {
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float scale = std::min(static_cast<float>(window_area.GetWidth()),
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window_area.GetHeight() / screen_aspect_ratio);
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return Common::Rectangle<T>{0, 0, static_cast<T>(std::round(scale)),
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static_cast<T>(std::round(scale * screen_aspect_ratio))};
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}
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FramebufferLayout DefaultFrameLayout(u32 width, u32 height) {
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ASSERT(width > 0);
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ASSERT(height > 0);
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// The drawing code needs at least somewhat valid values for both screens
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// so just calculate them both even if the other isn't showing.
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FramebufferLayout res{width, height};
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const float emulation_aspect_ratio{static_cast<float>(ScreenUndocked::Height) /
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ScreenUndocked::Width};
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const auto window_aspect_ratio = static_cast<float>(height) / width;
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const Common::Rectangle<u32> screen_window_area{0, 0, width, height};
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Common::Rectangle<u32> screen = MaxRectangle(screen_window_area, emulation_aspect_ratio);
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if (window_aspect_ratio < emulation_aspect_ratio) {
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screen = screen.TranslateX((screen_window_area.GetWidth() - screen.GetWidth()) / 2);
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} else {
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screen = screen.TranslateY((height - screen.GetHeight()) / 2);
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}
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res.screen = screen;
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return res;
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}
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FramebufferLayout FrameLayoutFromResolutionScale(u32 res_scale) {
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u32 width, height;
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if (Settings::values.use_docked_mode) {
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width = ScreenDocked::WidthDocked * res_scale;
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height = ScreenDocked::HeightDocked * res_scale;
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} else {
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width = ScreenUndocked::Width * res_scale;
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height = ScreenUndocked::Height * res_scale;
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}
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return DefaultFrameLayout(width, height);
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}
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} // namespace Layout
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