Invalidate memory allocated for framebuffer

Ensure we're clearing uncached memory

Author: Extrems

libogc/system.c

@@ -1489,7 +1489,13 @@ bool SYS_IsDMAAddress(const void *addr,u32 align)
 
 void* SYS_AllocateFramebuffer(GXRModeObj *rmode)
 {
-	return memalign(32, VIDEO_GetFrameBufferSize(rmode));
+	void *fb;
+	u32 size;
+
+	size = VIDEO_GetFrameBufferSize(rmode);
+	fb = memalign(PPC_CACHE_ALIGNMENT,size);
+	if(fb) DCInvalidateRange(fb,size);
+	return fb;
 }
 
 u16 SYS_GetFontEncoding(void)

libogc/video.c

@@ -3081,7 +3081,11 @@ u32 VIDEO_GetFrameBufferSize(const GXRModeObj *rmode)
 
 void VIDEO_ClearFrameBuffer(const GXRModeObj *rmode,void *fb,u32 color)
 {
-	__VIClearFramebuffer(fb, VIDEO_GetFrameBufferSize(rmode), color);
+	u32 size;
+
+	size = VIDEO_GetFrameBufferSize(rmode);
+	fb = (void*)MEM_VIRTUAL_TO_PHYSICAL(fb);
+	__VIClearFramebuffer(MEM_PHYSICAL_TO_K1(fb),size,color);
 }
 
 u32 VIDEO_HaveComponentCable(void)