initial commit

gfx/cube.cpp

@@ -0,0 +1,64 @@
+// Commands
+#define CBEGIN 0x40
+#define CCOLOR 0x20
+#define CVERTEX 0x24
+#define CNORMAL 0x21
+
+// Parameters
+#define QUAD 0x1
+#define QUADSTRIP 0x3
+#define GRAY RGB15(15, 15, 15)
+#define NORMAL(x,y,z) () // (1bit sign + 9bit fractional part)
+#define VERTEX(x,y,z) () // (signed, with 6bit fractional part)
+
+#define COMMAND(a,b,c,d) \
+	((a)&0xFF|(((b)&0xFF)<<8)|(((c)&0xFF)<<16)|(((d)&0xFF)<<24))
+
+u32 cubelist[] =
+{
+	COMMAND(CBEGIN, CCOLOR, CNORMAL, CVERTEX),
+	QUADSTRIP,
+	GRAY,
+	NORMAL( 0,-1, 0),
+	VERTEX(-1,-1,-1),
+	COMMAND(CVERTEX, CVERTEX, CVERTEX, CNORMAL),
+	VERTEX( 1,-1,-1),
+	VERTEX(-1,-1, 1),
+	VERTEX( 1,-1, 1),
+	NORMAL( 0, 0, 1),
+	COMMAND(CVERTEX, CVERTEX, CNORMAL, CVERTEX),
+	VERTEX(-1, 1, 1),
+	VERTEX( 1, 1, 1),
+	NORMAL( 0, 1, 0),
+	VERTEX(-1, 1,-1),
+	COMMAND(CVERTEX, CNORMAL, CVERTEX, CVERTEX),
+	VERTEX( 1, 1,-1),
+	NORMAL( 0, 0,-1),
+	VERTEX(-1,-1,-1),
+	VERTEX( 1,-1,-1),
+	COMMAND(CBEGIN, CNORMAL, CVERTEX, CVERTEX),
+	QUAD,
+	NORMAL( 1, 0, 0),
+	VERTEX( 1,-1,-1),
+	VERTEX( 1,-1, 1),
+	COMMAND(CVERTEX, CVERTEX, CNORMAL, CVERTEX),
+	VERTEX( 1, 1, 1),
+	VERTEX( 1, 1,-1),
+	NORMAL(-1, 0, 0),
+	VERTEX(-1,-1,-1),
+	COMMAND(CVERTEX, CVERTEX, CVERTEX, 0),
+	VERTEX(-1,-1, 1),
+	VERTEX(-1, 1, 1),
+	VERTEX(-1, 1,-1),
+};
+
+inline void cube()
+{
+	extern u32 cubelist[];
+
+	DMA_SRC(0) = cubelist;
+	DMA_DEST(0) = 0x4000400;
+	DMA_CR(0) = DMA_FIFO | (sizeof(cubelist)/sizeof(u32));
+	while ( DMA_CR(0) & DMA_BUSY )
+		;
+}