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Support fractional scaling.

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Mouse cursor is broken, but the whole Wayland design of providing mouse
cursors as surfaces by the application is broken.
This commit is contained in:
Bartosz Taudul 2024-03-24 01:16:51 +01:00
parent cdfad41d68
commit 6349d1ef0b
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GPG Key ID: B7FE2008B7575DF3
1 changed files with 31 additions and 1 deletions
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32
profiler/src/BackendWayland.cpp
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@ -187,7 +187,9 @@ static struct xdg_activation_token_v1* s_actToken;
static struct zxdg_decoration_manager_v1* s_decoration; static struct zxdg_decoration_manager_v1* s_decoration;
static struct zxdg_toplevel_decoration_v1* s_tldec; static struct zxdg_toplevel_decoration_v1* s_tldec;
static struct wp_fractional_scale_manager_v1* s_fractionalScale; static struct wp_fractional_scale_manager_v1* s_fractionalScale;
static struct wp_fractional_scale_v1* s_fracSurf;
static struct wp_viewporter* s_viewporter; static struct wp_viewporter* s_viewporter;
static struct wp_viewport* s_viewport;
static struct wl_keyboard* s_keyboard; static struct wl_keyboard* s_keyboard;
static struct xkb_context* s_xkbCtx; static struct xkb_context* s_xkbCtx;
static struct xkb_keymap* s_xkbKeymap; static struct xkb_keymap* s_xkbKeymap;
@ -217,6 +219,8 @@ static bool s_wheel;
static void RecomputeScale() static void RecomputeScale()
{ {
if( s_fracSurf ) return;
// On wl_compositor >= 6 the scale is sent explicitly via wl_surface.preferred_buffer_scale. // On wl_compositor >= 6 the scale is sent explicitly via wl_surface.preferred_buffer_scale.
if ( s_comp_version >= 6 ) return; if ( s_comp_version >= 6 ) return;
@ -649,6 +653,7 @@ static void SurfaceLeave( void*, struct wl_surface* surface, struct wl_output* o
static void SurfacePreferredBufferScale( void*, struct wl_surface* surface, int32_t scale ) static void SurfacePreferredBufferScale( void*, struct wl_surface* surface, int32_t scale )
{ {
if( s_fracSurf ) return;
s_maxScale = scale * 120; s_maxScale = scale * 120;
tracy::s_wasActive = true; tracy::s_wasActive = true;
} }
@ -664,6 +669,17 @@ constexpr struct wl_surface_listener surfaceListener = {
.preferred_buffer_transform = SurfacePreferredBufferTransform .preferred_buffer_transform = SurfacePreferredBufferTransform
}; };
static void FractionalPreferredScale( void*, struct wp_fractional_scale_v1* frac, uint32_t scale )
{
s_maxScale = scale;
tracy::s_wasActive = true;
}
constexpr struct wp_fractional_scale_v1_listener fractionalListener = {
.preferred_scale = FractionalPreferredScale
};
static void SetupCursor() static void SetupCursor()
{ {
auto env_xcursor_theme = getenv( "XCURSOR_THEME" ); auto env_xcursor_theme = getenv( "XCURSOR_THEME" );
@ -712,6 +728,13 @@ Backend::Backend( const char* title, const std::function<void()>& redraw, const
s_xdgSurf = xdg_wm_base_get_xdg_surface( s_wm, s_surf ); s_xdgSurf = xdg_wm_base_get_xdg_surface( s_wm, s_surf );
xdg_surface_add_listener( s_xdgSurf, &xdgSurfaceListener, nullptr ); xdg_surface_add_listener( s_xdgSurf, &xdgSurfaceListener, nullptr );
if( s_fractionalScale && s_viewporter )
{
s_fracSurf = wp_fractional_scale_manager_v1_get_fractional_scale( s_fractionalScale, s_surf );
wp_fractional_scale_v1_add_listener( s_fracSurf, &fractionalListener, nullptr );
s_viewport = wp_viewporter_get_viewport( s_viewporter, s_surf );
}
SetupCursor(); SetupCursor();
constexpr EGLint eglConfigAttrib[] = { constexpr EGLint eglConfigAttrib[] = {
@ -775,6 +798,8 @@ Backend::~Backend()
{ {
ImGui_ImplOpenGL3_Shutdown(); ImGui_ImplOpenGL3_Shutdown();
if( s_viewport ) wp_viewport_destroy( s_viewport );
if( s_fracSurf ) wp_fractional_scale_v1_destroy( s_fracSurf );
if( s_viewporter ) wp_viewporter_destroy( s_viewporter ); if( s_viewporter ) wp_viewporter_destroy( s_viewporter );
if( s_fractionalScale ) wp_fractional_scale_manager_v1_destroy( s_fractionalScale ); if( s_fractionalScale ) wp_fractional_scale_manager_v1_destroy( s_fractionalScale );
if( s_tldec ) zxdg_toplevel_decoration_v1_destroy( s_tldec ); if( s_tldec ) zxdg_toplevel_decoration_v1_destroy( s_tldec );
@ -851,13 +876,18 @@ void Backend::NewFrame( int& w, int& h )
s_prevWidth = s_width; s_prevWidth = s_width;
s_prevHeight = s_height; s_prevHeight = s_height;
wl_egl_window_resize( s_eglWin, s_width * s_maxScale / 120, s_height * s_maxScale / 120, 0, 0 ); wl_egl_window_resize( s_eglWin, s_width * s_maxScale / 120, s_height * s_maxScale / 120, 0, 0 );
if( s_fracSurf )
{
wp_viewport_set_source( s_viewport, 0, 0, wl_fixed_from_double( s_width * s_maxScale / 120. ), wl_fixed_from_double( s_height * s_maxScale / 120. ) );
wp_viewport_set_destination( s_viewport, s_width, s_height );
}
} }
if( s_prevScale != s_maxScale ) if( s_prevScale != s_maxScale )
{ {
s_scaleChanged( s_maxScale / 120.f ); s_scaleChanged( s_maxScale / 120.f );
SetupCursor(); SetupCursor();
wl_surface_set_buffer_scale( s_surf, s_maxScale / 120 ); if( !s_fracSurf ) wl_surface_set_buffer_scale( s_surf, s_maxScale / 120 );
s_prevScale = s_maxScale; s_prevScale = s_maxScale;
} }