fix drawing of picked up peep

src/drawing/drawing.c

@@ -286,10 +286,10 @@ void gfx_invalidate_pickedup_peep()
 	}
 }
 
-void gfx_draw_pickedup_peep()
+void gfx_draw_pickedup_peep(rct_drawpixelinfo *dpi)
 {
 	if (gPickupPeepImage != UINT32_MAX) {
-		gfx_draw_sprite(&gScreenDPI, gPickupPeepImage, gPickupPeepX, gPickupPeepY, 0);
+		gfx_draw_sprite(dpi, gPickupPeepImage, gPickupPeepX, gPickupPeepY, 0);
 	}
 }
 

src/drawing/drawing.h

@@ -132,7 +132,7 @@ void gfx_draw_rain(int left, int top, int width, int height, sint32 x_start, sin
 void gfx_clear(rct_drawpixelinfo *dpi, int colour);
 void gfx_draw_pixel(rct_drawpixelinfo *dpi, int x, int y, int colour);
 void gfx_invalidate_pickedup_peep();
-void gfx_draw_pickedup_peep();
+void gfx_draw_pickedup_peep(rct_drawpixelinfo *dpi);
 
 // line
 void gfx_draw_line(rct_drawpixelinfo *dpi, int x1, int y1, int x2, int y2, int colour);

src/drawing/engines/OpenGLDrawingEngine.cpp

@@ -179,6 +179,8 @@ public:
         gfx_redraw_screen_rect(0, 0, _width - 1, _height - 1);
         window_update_all();
 
+        gfx_draw_pickedup_peep(&_bitsDPI);
+
         rct2_draw();
         Display();
     }
@@ -311,7 +313,16 @@ void OpenGLDrawingContext::FillRect(uint32 colour, sint32 left, sint32 top, sint
     }
 
     glDisable(GL_TEXTURE_2D);
-    glColor3f(paletteColour.r, paletteColour.g, paletteColour.b);
+
+    if (colour & 0x2000000)
+    {
+        glColor4f(paletteColour.r, paletteColour.g, paletteColour.b, 0.4f);
+    }
+    else
+    {
+        glColor3f(paletteColour.r, paletteColour.g, paletteColour.b);
+    }
+
     glBegin(GL_QUADS);
         glVertex2i(left,  top);
         glVertex2i(left,  bottom);

src/drawing/engines/SoftwareDrawingEngine.cpp

@@ -292,15 +292,15 @@ public:
     {
         _rainDrawer.SetDPI(&_bitsDPI);
         _rainDrawer.Restore();
-        
-        gfx_invalidate_pickedup_peep();
-        gfx_draw_pickedup_peep();
 
         DrawAllDirtyBlocks();
         window_update_all_viewports();
         DrawAllDirtyBlocks();
         window_update_all();
 
+        gfx_draw_pickedup_peep(&_bitsDPI);
+        gfx_invalidate_pickedup_peep();
+
         DrawRain(&_rainDrawer);
 
         rct2_draw();