X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?p=dosdemo;a=blobdiff_plain;f=src%2F3dgfx%2Fpolyfill.h;fp=src%2F3dgfx%2Fpolyfill.h;h=19092f0ca65f8f451ccb0f28e294562b954e0f4a;hp=0000000000000000000000000000000000000000;hb=57bd2dc519c47f434e3e5acf998fb9c72448cbce;hpb=d956a9d9273eebfacfda58cb3bafff017269d5dc

diff --git a/src/3dgfx/polyfill.h b/src/3dgfx/polyfill.h
new file mode 100644
index 0000000..19092f0
--- /dev/null
+++ b/src/3dgfx/polyfill.h
@@ -0,0 +1,79 @@
+#ifndef POLYFILL_H_
+#define POLYFILL_H_
+
+#include "inttypes.h"
+#include "3dgfx.h"
+
+#define POLYFILL_MODE_MASK	0x03
+#define POLYFILL_TEX_BIT	0x04
+#define POLYFILL_ALPHA_BIT	0x08
+#define POLYFILL_ADD_BIT	0x10
+
+enum {
+	POLYFILL_WIRE			= 0,
+	POLYFILL_FLAT,
+	POLYFILL_GOURAUD,
+
+	POLYFILL_TEX_WIRE		= 4,
+	POLYFILL_TEX_FLAT,
+	POLYFILL_TEX_GOURAUD,
+
+	POLYFILL_ALPHA_WIRE		= 8,
+	POLYFILL_ALPHA_FLAT,
+	POLYFILL_ALPHA_GOURAUD,
+
+	POLYFILL_ALPHA_TEX_WIRE	= 12,
+	POLYFILL_ALPHA_TEX_FLAT,
+	POLYFILL_ALPHA_TEX_GOURAUD,
+
+	POLYFILL_ADD_WIRE		= 16,
+	POLYFILL_ADD_FLAT,
+	POLYFILL_ADD_GOURAUD,
+
+	POLYFILL_ADD_TEX_WIRE	= 20,
+	POLYFILL_ADD_TEX_FLAT,
+	POLYFILL_ADD_TEX_GOURAUD
+};
+
+/* projected vertices for the rasterizer */
+struct pvertex {
+	int32_t x, y; /* 24.8 fixed point */
+	int32_t u, v; /* 16.16 fixed point */
+	int32_t r, g, b, a;  /* int 0-255 */
+};
+
+struct pimage {
+	g3d_pixel *pixels;
+	int width, height;
+
+	int xshift, yshift;
+	unsigned int xmask, ymask;
+};
+
+extern struct pimage pfill_fb;
+extern struct pimage pfill_tex;
+
+void polyfill_fbheight(int height);
+
+void polyfill(int mode, struct pvertex *verts, int nverts);
+
+void polyfill_wire(struct pvertex *verts, int nverts);
+void polyfill_flat(struct pvertex *verts, int nverts);
+void polyfill_gouraud(struct pvertex *verts, int nverts);
+void polyfill_tex_wire(struct pvertex *verts, int nverts);
+void polyfill_tex_flat(struct pvertex *verts, int nverts);
+void polyfill_tex_gouraud(struct pvertex *verts, int nverts);
+void polyfill_alpha_wire(struct pvertex *verts, int nverts);
+void polyfill_alpha_flat(struct pvertex *verts, int nverts);
+void polyfill_alpha_gouraud(struct pvertex *verts, int nverts);
+void polyfill_alpha_tex_wire(struct pvertex *verts, int nverts);
+void polyfill_alpha_tex_flat(struct pvertex *verts, int nverts);
+void polyfill_alpha_tex_gouraud(struct pvertex *verts, int nverts);
+void polyfill_add_wire(struct pvertex *verts, int nverts);
+void polyfill_add_flat(struct pvertex *verts, int nverts);
+void polyfill_add_gouraud(struct pvertex *verts, int nverts);
+void polyfill_add_tex_wire(struct pvertex *verts, int nverts);
+void polyfill_add_tex_flat(struct pvertex *verts, int nverts);
+void polyfill_add_tex_gouraud(struct pvertex *verts, int nverts);
+
+#endif	/* POLYFILL_H_ */