uxn

commit 9c4df351748b3328ba60a67a648eeec53df9e31c
parent a4e54062b837991c1ede8fc377cd2650c3860fbf
Author: neauoire <aliceffekt@gmail.com>
Date:   Tue, 20 Apr 2021 20:06:30 -0700

Tiny fix to PPU

Diffstat:
M
src/emulator.c
 | 
2
+-
M
src/ppu.c
 | 
8
++++----
M
src/ppu.h
 | 
2
+-

3 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/src/emulator.c b/src/emulator.c
@@ -184,7 +184,7 @@ doctrl(Uxn *u, SDL_Event *event, int z)
 Uint8
 system_poke(Uxn *u, Uint8 *m, Uint8 b0, Uint8 b1)
 {
-	getcolors(&ppu, &m[0x8]);
+	putcolors(&ppu, genpeek16(m, 0x8), genpeek16(m, 0xa), genpeek16(m, 0xc));
 	printf("%02x%02x %02x%02x %02x%02x\n", m[0x8], m[0x9], m[0xa], m[0xb], m[0xc], m[0xd]);
 	reqdraw = 1;
 	(void)u;
diff --git a/src/ppu.c b/src/ppu.c
@@ -111,14 +111,14 @@ drawdebugger(Ppu *p, Uint8 *stack, Uint8 ptr)
 }
 
 void
-getcolors(Ppu *p, Uint8 *addr)
+putcolors(Ppu *p, Uint16 rr, Uint16 gg, Uint16 bb)
 {
 	int i;
 	for(i = 0; i < 4; ++i) {
 		Uint8
-			r = (*(addr + i / 2) >> (!(i % 2) << 2)) & 0x0f,
-			g = (*(addr + 2 + i / 2) >> (!(i % 2) << 2)) & 0x0f,
-			b = (*(addr + 4 + i / 2) >> (!(i % 2) << 2)) & 0x0f;
+			r = ((rr >> (1 - i / 2) * 8) >> (!(i % 2) << 2)) & 0x0f,
+			g = ((gg >> (1 - i / 2) * 8) >> (!(i % 2) << 2)) & 0x0f,
+			b = ((bb >> (1 - i / 2) * 8) >> (!(i % 2) << 2)) & 0x0f;
 		p->colors[i] = (r << 20) + (r << 16) + (g << 12) + (g << 8) + (b << 4) + b;
 	}
 }
diff --git a/src/ppu.h b/src/ppu.h
@@ -26,7 +26,7 @@ typedef struct Ppu {
 int initppu(Ppu *p, Uint8 hor, Uint8 ver, Uint8 pad);
 void drawppu(Ppu *p);
 void drawdebugger(Ppu *p, Uint8 *stack, Uint8 ptr);
-void getcolors(Ppu *p, Uint8 *addr);
+void putcolors(Ppu *p, Uint16 rr, Uint16 gg, Uint16 bb);
 void putpixel(Ppu *p, Uint8 *layer, Uint16 x, Uint16 y, Uint8 color);
 void puticn(Ppu *p, Uint8 *layer, Uint16 x, Uint16 y, Uint8 *sprite, Uint8 color);
 void putchr(Ppu *p, Uint8 *layer, Uint16 x, Uint16 y, Uint8 *sprite, Uint8 color);
 \ No newline at end of file