@@ -50,23 +50,24 @@ ppu_palette(Ppu *p, Uint8 *addr)

 	}

 	for(i = 4; i < 16; ++i)

 		p->palette[i] = p->palette[i / 4];

-	p->fg.reqdraw = p->bg.reqdraw = 1;

+	p->fg.changed = p->bg.changed = 1;

 }

 void

 ppu_resize(Ppu *p, Uint16 width, Uint16 height)

 {

-	Uint8 

-	*bg = realloc(p->bg.p, width * height),

-	*fg = realloc(p->fg.p, width * height);

+	Uint8

+		*bg = realloc(p->bg.pixels, width * height),

+		*fg = realloc(p->fg.pixels, width * height);

 	if(!bg || !fg)

 		return;

-	p->bg.p = bg;

-	p->fg.p = fg;

+	p->bg.pixels = bg;

+	p->fg.pixels = fg;

 	p->width = width;

 	p->height = height;

 	ppu_clear(p, &p->bg);

 	ppu_clear(p, &p->fg);

+	p->fg.changed = p->bg.changed = 1;

 }

 void

@@ -74,7 +75,8 @@ ppu_clear(Ppu *p, Layer *layer)

 {

 	Uint32 i, size = p->width * p->height;

 	for(i = 0; i < size; ++i)

-		layer->p[i] = 0x00;

+		layer->pixels[i] = 0x00;

+	p->fg.changed = p->bg.changed = 1;

 }

 void

@@ -82,8 +84,8 @@ ppu_redraw(Ppu *p, Uint32 *screen)

 {

 	Uint32 i, size = p->width * p->height;

 	for(i = 0; i < size; ++i)

-		screen[i] = p->palette[p->fg.p[i] ? p->fg.p[i] : p->bg.p[i]];

-	p->fg.reqdraw = p->bg.reqdraw = 0;

+		screen[i] = p->palette[p->fg.pixels[i] ? p->fg.pixels[i] : p->bg.pixels[i]];

+	p->fg.changed = p->bg.changed = 0;

 }

 void

@@ -91,10 +93,10 @@ ppu_write(Ppu *p, Layer *layer, Uint16 x, Uint16 y, Uint8 color)

 {

 	if(x < p->width && y < p->height) {

 		Uint32 i = (x + y * p->width);

-		Uint8 prev = layer->p[i];

+		Uint8 prev = layer->pixels[i];

 		if(color != prev) {

-			layer->p[i] = color;

-			layer->reqdraw = 1;

+			layer->pixels[i] = color;

+			layer->changed = 1;

 		}

 	}

 }

@@ -21,14 +21,14 @@ typedef unsigned short Uint16;

 typedef unsigned int Uint32;

 typedef struct Layer {

-	Uint8 *p;

-	Uint8 reqdraw;

+	Uint8 *pixels;

+	Uint8 changed;

 } Layer;

 typedef struct Ppu {

-	Layer fg, bg;

 	Uint16 width, height;

 	Uint32 palette[16];

+	Layer fg, bg;

 } Ppu;

 void ppu_palette(Ppu *p, Uint8 *addr);

@@ -105,7 +105,6 @@ set_zoom(Uint8 scale)

 	if(!gWindow)

 		return;

 	set_window_size(gWindow, (ppu.width + PAD * 2) * zoom, (ppu.height + PAD * 2) * zoom);

-	ppu.fg.reqdraw = ppu.bg.reqdraw = 1;

 }

 static int

@@ -128,7 +127,6 @@ set_size(Uint16 width, Uint16 height, int is_resize)

 		return error("SDL_UpdateTexture", SDL_GetError());

 	if(is_resize)

 		set_window_size(gWindow, (ppu.width + PAD * 2) * zoom, (ppu.height + PAD * 2) * zoom);

-	ppu.fg.reqdraw = ppu.bg.reqdraw = 1;

 	return 1;

 }

@@ -550,7 +548,7 @@ run(Uxn *u)

 		}

 	breakout:

 		uxn_eval(u, devscreen->vector);

-		if(ppu.fg.reqdraw || ppu.bg.reqdraw || devsystem->dat[0xe])

+		if(ppu.fg.changed || ppu.bg.changed || devsystem->dat[0xe])

 			redraw(u);

 		if(!BENCH) {

 			elapsed = (SDL_GetPerformanceCounter() - begin) / (double)SDL_GetPerformanceFrequency() * 1000.0f;