From 0d055306a86b2645ce6131c1dd18b5066503e104 Mon Sep 17 00:00:00 2001
From: neauoire <aliceffekt@gmail.com>
Date: Sat, 11 Nov 2023 20:44:15 -0800
Subject: [PATCH] (screen) Added fill() function

---
 src/devices/screen.c | 34 ++++++++++++++++++----------------
 src/devices/screen.h |  1 +
 src/uxnemu.c         |  6 +++---
 3 files changed, 22 insertions(+), 19 deletions(-)

diff --git a/src/devices/screen.c b/src/devices/screen.c
index 5c58071..98afb02 100644
--- a/src/devices/screen.c
+++ b/src/devices/screen.c
@@ -38,6 +38,14 @@ screen_change(Uint16 x1, Uint16 y1, Uint16 x2, Uint16 y2)
 	if(y2 > uxn_screen.y2) uxn_screen.y2 = y2;
 }
 
+void
+screen_fill(Uint8 *layer, int color)
+{
+	int i, length = uxn_screen.width * uxn_screen.height;
+	for(i = 0; i < length; i++)
+		layer[i] = color;
+}
+
 void
 screen_rect(Uint8 *layer, int x1, int y1, int x2, int y2, int color)
 {
@@ -137,24 +145,18 @@ screen_resize(Uint16 width, Uint16 height)
 		return;
 	if(uxn_screen.width == width && uxn_screen.height == height)
 		return;
-	bg = malloc(width * height),
-	fg = malloc(width * height);
+	bg = malloc(width * height), fg = malloc(width * height);
 	if(bg && fg)
 		pixels = realloc(uxn_screen.pixels, width * height * sizeof(Uint32));
 	if(!bg || !fg || !pixels) {
-		free(bg);
-		free(fg);
+		free(bg), free(fg);
 		return;
 	}
-	free(uxn_screen.bg);
-	free(uxn_screen.fg);
-	uxn_screen.bg = bg;
-	uxn_screen.fg = fg;
+	free(uxn_screen.bg), free(uxn_screen.fg);
+	uxn_screen.bg = bg, uxn_screen.fg = fg;
 	uxn_screen.pixels = pixels;
-	uxn_screen.width = width;
-	uxn_screen.height = height;
-	screen_rect(uxn_screen.bg, 0, 0, width, height, 0);
-	screen_rect(uxn_screen.fg, 0, 0, width, height, 0);
+	uxn_screen.width = width, uxn_screen.height = height;
+	screen_fill(uxn_screen.bg, 0), screen_fill(uxn_screen.fg, 0);
 	emu_resize(width, height);
 	screen_change(0, 0, width, height);
 }
@@ -194,13 +196,13 @@ screen_dei(Uxn *u, Uint8 addr)
 void
 screen_deo(Uint8 *ram, Uint8 *d, Uint8 port)
 {
-	Uint8 *port_width, *port_height, *port_x, *port_y, *port_addr;
+	Uint8 *port_height, *port_x, *port_y, *port_addr;
 	Uint16 x, y, dx, dy, dxy, dyx, addr, addr_incr;
 	switch(port) {
-	case 0x3:
-		port_width = d + 0x2;
+	case 0x3: {
+		Uint8 *port_width = d + 0x2;
 		screen_resize(PEEK2(port_width), uxn_screen.height);
-		break;
+	} break;
 	case 0x5:
 		port_height = d + 0x4;
 		screen_resize(uxn_screen.width, PEEK2(port_height));
diff --git a/src/devices/screen.h b/src/devices/screen.h
index 43a93d8..4bf1981 100644
--- a/src/devices/screen.h
+++ b/src/devices/screen.h
@@ -22,6 +22,7 @@ typedef struct UxnScreen {
 extern UxnScreen uxn_screen;
 extern int emu_resize(int width, int height);
 
+void screen_fill(Uint8 *layer, int color);
 void screen_rect(Uint8 *layer, int x1, int y1, int x2, int y2, int color);
 void screen_palette(Uint8 *addr);
 void screen_resize(Uint16 width, Uint16 height);
diff --git a/src/uxnemu.c b/src/uxnemu.c
index c9e7b90..7bdc1fb 100644
--- a/src/uxnemu.c
+++ b/src/uxnemu.c
@@ -178,7 +178,7 @@ static void
 set_debugger(Uxn *u, int value)
 {
 	u->dev[0x0e] = value;
-	screen_rect(uxn_screen.fg, 0, 0, uxn_screen.width, uxn_screen.height, 0);
+	screen_fill(uxn_screen.fg, 0);
 	screen_redraw(u);
 }
 
@@ -253,8 +253,8 @@ static void
 emu_restart(Uxn *u, char *rom, int soft)
 {
 	screen_resize(WIDTH, HEIGHT);
-	screen_rect(uxn_screen.bg, 0, 0, uxn_screen.width, uxn_screen.height, 0);
-	screen_rect(uxn_screen.fg, 0, 0, uxn_screen.width, uxn_screen.height, 0);
+	screen_fill(uxn_screen.bg, 0);
+	screen_fill(uxn_screen.fg, 0);
 	system_reboot(u, rom, soft);
 	SDL_SetWindowTitle(emu_window, boot_rom);
 }