1 files changed, 57 insertions, 0 deletions
diff --git a/src/graphics.h b/src/graphics.h
new file mode 100644
index 0000000..2927110
--- /dev/null
+++ b/src/graphics.h
@@ -0,0 +1,57 @@
+#ifndef __GRAPHICS_H__
+#define __GRAPHICS_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define SCREEN_WIDTH 320
+#define SCREEN_HEIGHT 240
+
+#define PIXEL32_A(p)	(p >> 24)
+#define PIXEL32_B(p)	((p >> 16) & 0xff)
+#define PIXEL32_G(p)	((p >>  8) & 0xff)
+#define PIXEL32_R(p)	(p & 0xff)
+#define RGB32(r, g, b, a) ((a << 24) | (b << 16) | (g << 8) | r)
+
+#define RGB16(r, g, b)	(((r >> 3) << 11) | ((g >> 2) << 5) | (b >> 3))
+#define PIXEL16_R(p)	((p >> 11) << 3)
+#define PIXEL16_G(p)	(((p >> 5) & 63) << 2)
+#define PIXEL16_B(p)	((p & 31) << 3)
+//#define BLEND(c1, a, c2) (((((unsigned int)c1) * ((unsigned int)a)) + (((unsigned int)c2) * (0x100 - ((unsigned char)a)))) >> 8)
+#define BLEND(c1, a, c2) ((((int)a * ((int)c1 - (int)c2)) + ((int)c2 << 8)) >> 8)
+#ifndef MIN
+	#define MIN(a, b) (((a) < (b))? (a) : (b)) 
+#endif
+#ifndef MIN
+	#define MAX(a, b) (((a) > (b))? (a) : (b)) 
+#endif
+
+
+typedef struct {
+	unsigned int w;
+	unsigned int h;
+	unsigned int bpp;
+	unsigned char *data;
+	} gBITMAP; 
+
+void gSetClipping(int x1, int y1, int x2, int y2);
+void gClearClipping();
+
+void gClearScreen(unsigned short *screen, unsigned short color);
+
+void gBlendPixel16(unsigned short *screen, int x, int y, unsigned char r, unsigned char g, unsigned char b, unsigned char a);
+void gDrawPixel16(unsigned short *screen, int x, int y, unsigned char r, unsigned char g, unsigned char b); 
+void gBlendBitmap16(unsigned short *screen, int sx, int sy, gBITMAP *img, unsigned int ix, unsigned int iy, unsigned int iw, unsigned int ih);
+void gDrawBitmap16(unsigned short *screen, int sx, int sy, gBITMAP *img, unsigned int ix, unsigned int iy, unsigned int iw, unsigned int ih);
+void gDrawScaledBitmap16(unsigned short *screen, int sx, int sy, gBITMAP *img, unsigned int iw, unsigned int ih);
+
+void gDestroyBitmap(gBITMAP *img);
+gBITMAP *gCreateBitmap(unsigned int width, unsigned int height, unsigned char bpp); 
+gBITMAP *gStretchBitmap(gBITMAP *img, unsigned int iw, unsigned int ih);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif