X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?a=blobdiff_plain;ds=sidebyside;f=src%2Futil.h;h=264367be94a4082ad3f544e99e01f025334f8175;hb=77eea907b4ba007632e37588b6cd7eb66c9eab07;hp=18c513e2eb8fa869057a8e33da1def1a8d6990b0;hpb=41765ea063cbab26ae05e7259ffc8a7c85db2f5d;p=gbajam22

diff --git a/src/util.h b/src/util.h
index 18c513e..264367b 100644
--- a/src/util.h
+++ b/src/util.h
@@ -3,6 +3,14 @@
 
 #include <stdlib.h>
 #include <stdint.h>
+#include "gba.h"
+
+#define RGB555(r, g, b)	\
+	((((uint16_t)(r) >> 3) & 0x1f) | \
+	 (((uint16_t)(g) << 2) & 0x3e0) | \
+	 (((uint16_t)(b) << 7) & 0x7c00))
+
+#ifdef BUILD_GBA
 
 #define wait_vblank() \
 	do { \
@@ -12,19 +20,32 @@
 
 #define present(x) \
 	do { \
-		REG_DISPCNT = DISPCNT_BG2 | DISPCNT_OBJ | 4 | ((x) << 4); \
+		REG_DISPCNT = (REG_DISPCNT & 0xffef) | ((x) << 4); \
 	} while(0)
 
+#define ARM_IWRAM	__attribute__((noinline, target("arm"), section(".iwram")))
+
+#else	/* non-GBA build */
+#define wait_vblank()
+
+void present(int buf);		/* defined in src/pc/main.c */
+
+#define ARM_IWRAM
+#endif
 
 #define set_bg_color(idx, r, g, b) \
-	do { \
-		((uint16_t*)CRAM_BG_ADDR)[idx] = (uint16_t)(r) | ((uint16_t)(g) << 5) | ((uint16_t)(b) << 10); \
-	} while(0)
+	gba_bgpal[idx] = (uint16_t)(r) | ((uint16_t)(g) << 5) | ((uint16_t)(b) << 10)
 
 extern int16_t sinlut[];
 
-#define SIN(x)	sinlut[(x) & 0xff]
-#define COS(x)	sinlut[((x) + 64) & 0xff]
+#define SINLUT_BITS		8
+#define SINLUT_SIZE		(1 << SINLUT_BITS)
+
+#define SIN(angle) \
+	((int32_t)sinlut[((angle) >> (16 - SINLUT_BITS)) & (SINLUT_SIZE - 1)] << 1)
+
+#define COS(angle) \
+	((int32_t)sinlut[(((angle) >> (16 - SINLUT_BITS)) + (SINLUT_SIZE / 4)) & (SINLUT_SIZE - 1)] << 1)
 
 int iwram_brk(void *addr);
 void *iwram_sbrk(intptr_t delta);