Apply asie's first performance patch

1 files changed, 8 insertions, 5 deletions

diff --git a/src/uxn/devices/ppu.c b/src/uxn/devices/ppu.c
index e9a94a6..60ede0a 100644
--- a/src/uxn/devices/ppu.c
+++ b/src/uxn/devices/ppu.c
@@ -142,8 +142,10 @@ static Uint32 unpack_icon_lut_flipx[256] = {
     0x11111111
 };
 
-u32 *backbuffer_bg0;
-u32 *backbuffer_bg1;
+EWRAM_BSS
+static u32 *backbuffer_bg0[30 * 20 * sizeof(Tile) / 4];
+EWRAM_BSS
+static u32 *backbuffer_bg1[30 * 20 * sizeof(Tile) / 4];
 static u32 dirty_tiles[20] = {0};
 
 void
@@ -161,6 +163,7 @@ putcolors(Ppu *p, Uint8 *addr) {
     }
 }
 
+IWRAM_CODE
 void
 putpixel(Ppu *p, Uint32 *layer, Uint16 x, Uint16 y, Uint8 color) {
     if(x >= 30 * 8 || y >= 20 * 8) {
@@ -176,6 +179,7 @@ putpixel(Ppu *p, Uint32 *layer, Uint16 x, Uint16 y, Uint8 color) {
     dirty_tiles[tile_y] |= 1 << tile_x;
 }
 
+IWRAM_CODE
 void
 puticn(Ppu *p, Uint32 *layer, Uint16 x, Uint16 y, Uint8 *sprite, Uint8 color,
         Uint8 flipx, Uint8 flipy) {
@@ -230,6 +234,7 @@ puticn(Ppu *p, Uint32 *layer, Uint16 x, Uint16 y, Uint8 *sprite, Uint8 color,
     }
 }
 
+IWRAM_CODE
 void
 putchr(Ppu *p, Uint32 *layer, Uint16 x, Uint16 y, Uint8 *sprite, Uint8 color,
         Uint8 flipx, Uint8 flipy) {
@@ -249,6 +254,7 @@ putchr(Ppu *p, Uint32 *layer, Uint16 x, Uint16 y, Uint8 *sprite, Uint8 color,
         }
 }
 
+IWRAM_CODE
 void
 flipbuf(Ppu *p) {
     Tile *mem_fg = &TILE_MEM[0];
@@ -289,9 +295,6 @@ initppu(Ppu *p, Uint8 hor, Uint8 ver, Uint8 pad) {
     BG_CTRL(0) = BG_CHARBLOCK(cb_fg) | BG_SCREENBLOCK(sb_idx) | BG_PRIORITY(1);
     BG_CTRL(1) = BG_CHARBLOCK(cb_bg) | BG_SCREENBLOCK(sb_idx) | BG_PRIORITY(2);
 
-    backbuffer_bg0 = malloc(30 * 20 * sizeof(Tile));
-    backbuffer_bg1 = malloc(30 * 20 * sizeof(Tile));
-
     // Clear tile memory.
     p->fg = backbuffer_bg0;
     p->bg = backbuffer_bg1;