X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?a=blobdiff_plain;f=src%2F3dgfx%2Fpolyfill.h;fp=src%2F3dgfx%2Fpolyfill.h;h=86c794739e8649d9f7a119d2efc1227eb94c4cfe;hb=879478749c2f426394d3d995ee6c079b3d9394e8;hp=0000000000000000000000000000000000000000;hpb=c667edc1da370d08d0af162adfdcb31ceae522ab;p=eradicate

diff --git a/src/3dgfx/polyfill.h b/src/3dgfx/polyfill.h
new file mode 100644
index 0000000..86c7947
--- /dev/null
+++ b/src/3dgfx/polyfill.h
@@ -0,0 +1,62 @@
+#ifndef POLYFILL_H_
+#define POLYFILL_H_
+
+#include "inttypes.h"
+#include "3dgfx.h"
+
+#define POLYFILL_MODE_MASK	0x03
+#define POLYFILL_TEX_BIT	0x04
+#define POLYFILL_BLEND_BIT	0x08
+
+enum {
+	POLYFILL_WIRE			= 0,
+	POLYFILL_FLAT,
+	POLYFILL_GOURAUD,
+
+	POLYFILL_TEX_WIRE		= 4,
+	POLYFILL_TEX_FLAT,
+	POLYFILL_TEX_GOURAUD,
+
+	POLYFILL_BLEND_WIRE		= 8,
+	POLYFILL_BLEND_FLAT,
+	POLYFILL_BLEND_GOURAUD,
+
+	POLYFILL_BLEND_TEX_WIRE	= 12,
+	POLYFILL_BLEND_TEX_FLAT,
+	POLYFILL_BLEND_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(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_blend_wire(struct pvertex *verts, int nverts);
+void polyfill_blend_flat(struct pvertex *verts, int nverts);
+void polyfill_blend_gouraud(struct pvertex *verts, int nverts);
+void polyfill_blend_tex_wire(struct pvertex *verts, int nverts);
+void polyfill_blend_tex_flat(struct pvertex *verts, int nverts);
+void polyfill_blend_tex_gouraud(struct pvertex *verts, int nverts);
+
+#endif	/* POLYFILL_H_ */