[client] renderer: add interface for high DPI rendering

client/displayservers/SDL/sdl.c

@@ -381,6 +381,7 @@ static int sdlEventFilter(void * userdata, SDL_Event * event)
           app_handleResizeEvent(
               event->window.data1,
               event->window.data2,
+              1,
               border);
           break;
         }

client/displayservers/Wayland/gl.c

@@ -80,7 +80,7 @@ void waylandEGLSwapBuffers(EGLDisplay display, EGLSurface surface)
     wl_surface_set_opaque_region(wlWm.surface, region);
     wl_region_destroy(region);
 
-    app_handleResizeEvent(wlWm.width, wlWm.height, (struct Border) {0, 0, 0, 0});
+    app_handleResizeEvent(wlWm.width, wlWm.height, 1, (struct Border) {0, 0, 0, 0});
     xdg_surface_ack_configure(wlWm.xdgSurface, wlWm.resizeSerial);
     wlWm.resizeSerial = 0;
   }

client/displayservers/X11/x11.c

@@ -569,10 +569,10 @@ static int x11EventThread(void * unused)
         if (x11.fullscreen)
         {
           struct Border border = {0};
-          app_handleResizeEvent(x11.rect.w, x11.rect.h, border);
+          app_handleResizeEvent(x11.rect.w, x11.rect.h, 1, border);
         }
         else
-          app_handleResizeEvent(x11.rect.w, x11.rect.h, x11.border);
+          app_handleResizeEvent(x11.rect.w, x11.rect.h, 1, x11.border);
         break;
       }
 
@@ -648,7 +648,7 @@ static int x11EventThread(void * unused)
             x11.border.right  = cardinal[1];
             x11.border.top    = cardinal[2];
             x11.border.bottom = cardinal[3];
-            app_handleResizeEvent(x11.rect.w, x11.rect.h, x11.border);
+            app_handleResizeEvent(x11.rect.w, x11.rect.h, 1, x11.border);
           }
 
           XFree(data);

client/include/app.h

@@ -39,7 +39,7 @@ bool app_isRunning(void);
 bool app_inputEnabled(void);
 void app_updateCursorPos(double x, double y);
 void app_updateWindowPos(int x, int y);
-void app_handleResizeEvent(int w, int h, const struct Border border);
+void app_handleResizeEvent(int w, int h, double scale, const struct Border border);
 
 void app_handleMouseRelative(double normx, double normy,
     double rawx, double rawy);

client/include/interface/renderer.h

@@ -109,7 +109,7 @@ typedef bool         (* LG_RendererInitialize   )(void * opaque);
 typedef void         (* LG_RendererDeInitialize )(void * opaque);
 typedef bool         (* LG_RendererSupports     )(void * opaque, LG_RendererSupport support);
 typedef void         (* LG_RendererOnRestart    )(void * opaque);
-typedef void         (* LG_RendererOnResize     )(void * opaque, const int width, const int height, const LG_RendererRect destRect, LG_RendererRotate rotate);
+typedef void         (* LG_RendererOnResize     )(void * opaque, const int width, const int height, const double scale, const LG_RendererRect destRect, LG_RendererRotate rotate);
 typedef bool         (* LG_RendererOnMouseShape )(void * opaque, const LG_RendererCursor cursor, const int width, const int height, const int pitch, const uint8_t * data);
 typedef bool         (* LG_RendererOnMouseEvent )(void * opaque, const bool visible , const int x, const int y);
 typedef bool         (* LG_RendererOnFrameFormat)(void * opaque, const LG_RendererFormat format, bool useDMA);

client/renderers/EGL/egl.c

@@ -379,7 +379,7 @@ static void egl_update_scale_type(struct Inst * this)
     this->scaleType = EGL_DESKTOP_UPSCALE;
 }
 
-void egl_on_resize(void * opaque, const int width, const int height,
+void egl_on_resize(void * opaque, const int width, const int height, const double scale,
     const LG_RendererRect destRect, LG_RendererRotate rotate)
 {
   struct Inst * this = (struct Inst *)opaque;

client/renderers/OpenGL/opengl.c

@@ -298,7 +298,7 @@ void opengl_on_restart(void * opaque)
   this->waiting = true;
 }
 
-void opengl_on_resize(void * opaque, const int width, const int height,
+void opengl_on_resize(void * opaque, const int width, const int height, const double scale,
     const LG_RendererRect destRect, LG_RendererRotate rotate)
 {
   struct Inst * this = (struct Inst *)opaque;

client/src/app.c

@@ -349,18 +349,19 @@ void app_updateWindowPos(int x, int y)
   g_state.windowPos.y = y;
 }
 
-void app_handleResizeEvent(int w, int h, const struct Border border)
+void app_handleResizeEvent(int w, int h, double scale, const struct Border border)
 {
   memcpy(&g_state.border, &border, sizeof(border));
 
   /* don't do anything else if the window dimensions have not changed */
-  if (g_state.windowW == w && g_state.windowH == h)
+  if (g_state.windowW == w && g_state.windowH == h && g_state.windowScale == scale)
     return;
 
-  g_state.windowW  = w;
+  g_state.windowW     = w;
-  g_state.windowH  = h;
+  g_state.windowH     = h;
-  g_state.windowCX = w / 2;
+  g_state.windowCX    = w / 2;
-  g_state.windowCY = h / 2;
+  g_state.windowCY    = h / 2;
+  g_state.windowScale = scale;
   core_updatePositionInfo();
 
   if (core_inputEnabled())

client/src/main.c

@@ -126,7 +126,7 @@ static int renderThread(void * unused)
     {
       if (g_state.lgr)
         g_state.lgr->on_resize(g_state.lgrData, g_state.windowW, g_state.windowH,
-            g_state.dstRect, g_params.winRotate);
+            g_state.windowScale, g_state.dstRect, g_params.winRotate);
       atomic_compare_exchange_weak(&g_state.lgrResize, &resize, 0);
     }
 

client/src/main.h

@@ -58,6 +58,7 @@ struct AppState
   struct Point         windowPos;
   int                  windowW, windowH;
   int                  windowCX, windowCY;
+  double               windowScale;
   LG_RendererRotate    rotate;
   bool                 focused;
   struct Border        border;