VIDEO: replace __VIClearFramebuffer asm with actual code

Author: DacoTaco

Makefile

@@ -141,7 +141,7 @@ OGCOBJ		:=	\
 			lwp_messages.o lwp.o lwp_handler.o lwp_stack.o lwp_mutex.o 	\
 			lwp_watchdog.o lwp_wkspace.o lwp_objmgr.o lwp_heap.o sys_state.o \
 			exception_handler.o exception.o irq.o irq_handler.o semaphore.o \
-			video_asm.o video.o pad.o dvd.o exi.o mutex.o arqueue.o	arqmgr.o	\
+			video.o pad.o dvd.o exi.o mutex.o arqueue.o	arqmgr.o	\
 			cache_asm.o system.o system_asm.o cond.o			\
 			gx.o gu.o gu_psasm.o gu_ps_concat44.o audio.o cache.o decrementer.o	\
 			message.o card.o aram.o depackrnc.o decrementer_handler.o	\

libogc/video.c

@@ -1730,8 +1730,6 @@ static vu16* const _viReg = (u16*)0xCC002000;
 extern syssram* __SYS_LockSram(void);
 extern u32 __SYS_UnlockSram(u32 write);
 
-extern void __VIClearFramebuffer(void*,u32,u32);
-
 extern void udelay(int us);
 
 #ifdef _VIDEO_DEBUG
@@ -1854,6 +1852,22 @@ static const struct _timing* __gettiming(u32 vimode)
 	}
 }
 
+//clear the framebuffer in 64 byte blocks with the specific color
+void __VIClearFramebuffer(void* videoBuffer, u32 length, u32 color)
+{
+	//unknown why it gets the block count like this. division by 2560x100?
+	u32 block_count = (length >> 8);
+	u32 *p = (videoBuffer - 1);
+
+	while (block_count--) {
+		int i;
+
+		//set 0x40 byte block
+		for (i = 0; i < 0x40; ++i)
+			*++p = color;
+	}
+}
+
 #if defined(HW_RVL)
 static inline void __viOpenI2C(u32 channel)
 {