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Feature: allow a toggle to enable/disable vsync

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Vsync should be off by default, as for most players it will be
better to play without vsync. Exception exist, mainly people who
play in fullscreen mode.
This commit is contained in:
Patric Stout 2021-04-10 14:53:26 +02:00 committed by Patric Stout
parent 56f982fa7f
commit f0f2073006
10 changed files with 68 additions and 12 deletions
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3
src/lang/english.txt
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@ -1006,6 +1006,9 @@ STR_GAME_OPTIONS_VIDEO_ACCELERATION :{BLACK}Hardware
STR_GAME_OPTIONS_VIDEO_ACCELERATION_TOOLTIP :{BLACK}Check this box to allow OpenTTD to try to use hardware acceleration. A changed setting will only be applied upon game restart
STR_GAME_OPTIONS_VIDEO_ACCELERATION_RESTART :{WHITE}The setting will only take effect after a game restart
STR_GAME_OPTIONS_VIDEO_VSYNC :{BLACK}VSync
STR_GAME_OPTIONS_VIDEO_VSYNC_TOOLTIP :{BLACK}Check this box to v-sync the screen. A changed setting will only be applied upon game restart. Only works with hardware acceleration enabled
STR_GAME_OPTIONS_GUI_ZOOM_FRAME :{BLACK}Interface size
STR_GAME_OPTIONS_GUI_ZOOM_DROPDOWN_TOOLTIP :{BLACK}Select the interface element size to use

31
src/settings_gui.cpp
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@ -458,6 +458,19 @@ struct GameOptionsWindow : Window {
_video_hw_accel = !_video_hw_accel;
ShowErrorMessage(STR_GAME_OPTIONS_VIDEO_ACCELERATION_RESTART, INVALID_STRING_ID, WL_INFO);
this->SetWidgetLoweredState(WID_GO_VIDEO_ACCEL_BUTTON, _video_hw_accel);
#ifndef __APPLE__
this->SetWidgetDisabledState(WID_GO_VIDEO_VSYNC_BUTTON, !_video_hw_accel);
#endif
this->SetDirty();
break;
case WID_GO_VIDEO_VSYNC_BUTTON:
if (!_video_hw_accel) break;
_video_vsync = !_video_vsync;
VideoDriver::GetInstance()->ToggleVsync(_video_vsync);
this->SetWidgetLoweredState(WID_GO_VIDEO_VSYNC_BUTTON, _video_vsync);
this->SetDirty();
break;
@ -598,6 +611,11 @@ struct GameOptionsWindow : Window {
this->SetWidgetLoweredState(WID_GO_FULLSCREEN_BUTTON, _fullscreen);
this->SetWidgetLoweredState(WID_GO_VIDEO_ACCEL_BUTTON, _video_hw_accel);
#ifndef __APPLE__
this->SetWidgetLoweredState(WID_GO_VIDEO_VSYNC_BUTTON, _video_vsync);
this->SetWidgetDisabledState(WID_GO_VIDEO_VSYNC_BUTTON, !_video_hw_accel);
#endif
bool missing_files = BaseGraphics::GetUsedSet()->GetNumMissing() == 0;
this->GetWidget<NWidgetCore>(WID_GO_BASE_GRF_STATUS)->SetDataTip(missing_files ? STR_EMPTY : STR_GAME_OPTIONS_BASE_GRF_STATUS, STR_NULL);
@ -647,7 +665,10 @@ static const NWidgetPart _nested_game_options_widgets[] = {
NWidget(WWT_TEXT, COLOUR_GREY), SetMinimalSize(0, 12), SetFill(1, 0), SetDataTip(STR_GAME_OPTIONS_RESOLUTION, STR_NULL), SetPadding(0, 0, 2, 0),
NWidget(WWT_TEXT, COLOUR_GREY), SetMinimalSize(0, 12), SetFill(1, 0), SetDataTip(STR_GAME_OPTIONS_REFRESH_RATE, STR_NULL), SetPadding(0, 0, 2, 0),
NWidget(WWT_TEXT, COLOUR_GREY), SetMinimalSize(0, 12), SetFill(1, 0), SetDataTip(STR_GAME_OPTIONS_FULLSCREEN, STR_NULL), SetPadding(0, 0, 2, 0),
NWidget(WWT_TEXT, COLOUR_GREY), SetMinimalSize(0, 12), SetFill(1, 0), SetDataTip(STR_GAME_OPTIONS_VIDEO_ACCELERATION, STR_NULL),
NWidget(WWT_TEXT, COLOUR_GREY), SetMinimalSize(0, 12), SetFill(1, 0), SetDataTip(STR_GAME_OPTIONS_VIDEO_ACCELERATION, STR_NULL), SetPadding(0, 0, 2, 0),
#ifndef __APPLE__
NWidget(WWT_TEXT, COLOUR_GREY), SetMinimalSize(0, 12), SetFill(1, 0), SetDataTip(STR_GAME_OPTIONS_VIDEO_VSYNC, STR_NULL),
#endif
EndContainer(),
NWidget(NWID_VERTICAL),
NWidget(WWT_DROPDOWN, COLOUR_GREY, WID_GO_RESOLUTION_DROPDOWN), SetMinimalSize(100, 12), SetDataTip(STR_BLACK_STRING, STR_GAME_OPTIONS_RESOLUTION_TOOLTIP), SetFill(1, 0), SetPadding(0, 0, 2, 0),
@ -656,10 +677,16 @@ static const NWidgetPart _nested_game_options_widgets[] = {
NWidget(NWID_SPACER), SetMinimalSize(1, 0), SetFill(1, 0),
NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_GO_FULLSCREEN_BUTTON), SetMinimalSize(21, 9), SetDataTip(STR_EMPTY, STR_GAME_OPTIONS_FULLSCREEN_TOOLTIP),
EndContainer(),
NWidget(NWID_HORIZONTAL),
NWidget(NWID_HORIZONTAL), SetPadding(0, 0, 2, 0),
NWidget(NWID_SPACER), SetMinimalSize(1, 0), SetFill(1, 0),
NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_GO_VIDEO_ACCEL_BUTTON), SetMinimalSize(21, 9), SetDataTip(STR_EMPTY, STR_GAME_OPTIONS_VIDEO_ACCELERATION_TOOLTIP),
EndContainer(),
#ifndef __APPLE__
NWidget(NWID_HORIZONTAL),
NWidget(NWID_SPACER), SetMinimalSize(1, 0), SetFill(1, 0),
NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_GO_VIDEO_VSYNC_BUTTON), SetMinimalSize(21, 9), SetDataTip(STR_EMPTY, STR_GAME_OPTIONS_VIDEO_VSYNC_TOOLTIP),
EndContainer(),
#endif
EndContainer(),
EndContainer(),
EndContainer(),

6
src/table/misc_settings.ini
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@ -77,6 +77,12 @@ var = _video_hw_accel
def = true
cat = SC_BASIC
[SDTG_BOOL]
name = ""video_vsync""
var = _video_vsync
def = false
cat = SC_BASIC
[SDTG_OMANY]
name = ""support8bpp""
type = SLE_UINT8

9
src/video/sdl2_opengl_v.cpp
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@ -70,8 +70,6 @@ const char *VideoDriver_SDL_OpenGL::Start(const StringList &param)
SDL_GetWindowSize(this->sdl_window, &w, &h);
this->ClientSizeChanged(w, h, true);
SDL_GL_SetSwapInterval(GetDriverParamBool(param, "vsync") ? 1 : 0);
return nullptr;
}
@ -91,6 +89,11 @@ void VideoDriver_SDL_OpenGL::DestroyContext()
}
}
void VideoDriver_SDL_OpenGL::ToggleVsync(bool vsync)
{
SDL_GL_SetSwapInterval(vsync);
}
const char *VideoDriver_SDL_OpenGL::AllocateContext()
{
SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 8);
@ -107,6 +110,8 @@ const char *VideoDriver_SDL_OpenGL::AllocateContext()
this->gl_context = SDL_GL_CreateContext(this->sdl_window);
if (this->gl_context == nullptr) return "SDL2: Can't active GL context";
ToggleVsync(_video_vsync);
return OpenGLBackend::Create(&GetOGLProcAddressCallback);
}

2
src/video/sdl2_opengl_v.h
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@ -29,6 +29,8 @@ public:
bool HasAnimBuffer() override { return true; }
uint8 *GetAnimBuffer() override { return this->anim_buffer; }
void ToggleVsync(bool vsync) override;
const char *GetName() const override { return "sdl-opengl"; }
protected:

1
src/video/video_driver.cpp
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@ -21,6 +21,7 @@
#include "video_driver.hpp"
bool _video_hw_accel; ///< Whether to consider hardware accelerated video drivers.
bool _video_vsync; ///< Whether we should use vsync (only if _video_hw_accel is enabled).
void VideoDriver::GameLoop()
{

7
src/video/video_driver.hpp
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@ -28,6 +28,7 @@ extern std::vector<Dimension> _resolutions;
extern Dimension _cur_resolution;
extern bool _rightclick_emulate;
extern bool _video_hw_accel;
extern bool _video_vsync;
/** The base of all video drivers. */
class VideoDriver : public Driver {
@ -66,6 +67,12 @@ public:
*/
virtual bool ToggleFullscreen(bool fullscreen) = 0;
/**
* Change the vsync setting.
* @param vsync The new setting.
*/
virtual void ToggleVsync(bool vsync) {}
/**
* Callback invoked after the blitter was changed.
* @return True if no error.

17
src/video/win32_v.cpp
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@ -1290,7 +1290,6 @@ const char *VideoDriver_Win32OpenGL::Start(const StringList &param)
if (BlitterFactory::GetCurrentBlitter()->GetScreenDepth() == 0) return "Only real blitters supported";
Dimension old_res = _cur_resolution; // Save current screen resolution in case of errors, as MakeWindow invalidates it.
this->vsync = GetDriverParamBool(param, "vsync");
LoadWGLExtensions();
@ -1335,6 +1334,15 @@ void VideoDriver_Win32OpenGL::DestroyContext()
}
}
void VideoDriver_Win32OpenGL::ToggleVsync(bool vsync)
{
if (_wglSwapIntervalEXT != nullptr) {
_wglSwapIntervalEXT(vsync);
} else if (vsync) {
DEBUG(driver, 0, "OpenGL: Vsync requested, but not supported by driver");
}
}
const char *VideoDriver_Win32OpenGL::AllocateContext()
{
this->dc = GetDC(this->main_wnd);
@ -1363,12 +1371,7 @@ const char *VideoDriver_Win32OpenGL::AllocateContext()
}
if (!wglMakeCurrent(this->dc, rc)) return "Can't active GL context";
/* Enable/disable Vsync if supported. */
if (_wglSwapIntervalEXT != nullptr) {
_wglSwapIntervalEXT(this->vsync ? 1 : 0);
} else if (vsync) {
DEBUG(driver, 0, "OpenGL: Vsync requested, but not supported by driver");
}
this->ToggleVsync(_video_vsync);
this->gl_rc = rc;
return OpenGLBackend::Create(&GetOGLProcAddressCallback);

3
src/video/win32_v.h
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@ -138,12 +138,13 @@ public:
bool HasAnimBuffer() override { return true; }
uint8 *GetAnimBuffer() override { return this->anim_buffer; }
void ToggleVsync(bool vsync) override;
const char *GetName() const override { return "win32-opengl"; }
protected:
HDC dc; ///< Window device context.
HGLRC gl_rc; ///< OpenGL context.
bool vsync; ///< Enable VSync?
uint8 *anim_buffer; ///< Animation buffer from OpenGL back-end.
uint8 GetFullscreenBpp() override { return 32; } // OpenGL is always 32 bpp.

1
src/widgets/settings_widget.h
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@ -35,6 +35,7 @@ enum GameOptionsWidgets {
WID_GO_BASE_MUSIC_DESCRIPTION = WID_GO_BASE_MUSIC_TEXTFILE + TFT_END, ///< Description of selected base music set.
WID_GO_FONT_ZOOM_DROPDOWN, ///< Dropdown for the font zoom level.
WID_GO_VIDEO_ACCEL_BUTTON, ///< Toggle for video acceleration.
WID_GO_VIDEO_VSYNC_BUTTON, ///< Toggle for video vsync.
WID_GO_REFRESH_RATE_DROPDOWN, ///< Dropdown for all available refresh rates.
};