backport cont.

[dosdemo] / src / polyfill.c

diff --git a/src/polyfill.c b/src/polyfill.c
deleted file mode 100644 (file)
index 3f94e25..0000000
--- a/src/polyfill.c
+++ /dev/null
@@ -1,179 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <assert.h>
-#if defined(__WATCOMC__) || defined(_MSC_VER) || defined(__DJGPP__)
-#include <malloc.h>
-#else
-#include <alloca.h>
-#endif
-#include "polyfill.h"
-#include "gfxutil.h"
-
-#define FILL_POLY_BITS 0x03
-
-/* mode bits: 00-wire 01-flat 10-gouraud 11-reserved
- *     bit 2: texture
- *     bit 3: blend
- */
-void (*fillfunc[])(struct pvertex*, int) = {
-       polyfill_wire,
-       polyfill_flat,
-       polyfill_gouraud,
-       0,
-       polyfill_tex_wire,
-       polyfill_tex_flat,
-       polyfill_tex_gouraud,
-       0,
-       polyfill_blend_wire,
-       polyfill_blend_flat,
-       polyfill_blend_gouraud,
-       0,
-       polyfill_blend_tex_wire,
-       polyfill_blend_tex_flat,
-       polyfill_blend_tex_gouraud,
-       0
-};
-
-struct pimage pfill_fb, pfill_tex;
-
-void polyfill(int mode, struct pvertex *verts, int nverts)
-{
-#ifndef NDEBUG
-       if(!fillfunc[mode]) {
-               fprintf(stderr, "polyfill mode %d not implemented\n", mode);
-               abort();
-       }
-#endif
-
-       fillfunc[mode](verts, nverts);
-}
-
-void polyfill_wire(struct pvertex *verts, int nverts)
-{
-       int i, x0, y0, x1, y1;
-       struct pvertex *v = verts;
-       unsigned short color = ((v->r << 8) & 0xf800) |
-               ((v->g << 3) & 0x7e0) | ((v->b >> 3) & 0x1f);
-
-       for(i=0; i<nverts - 1; i++) {
-               x0 = v->x >> 8;
-               y0 = v->y >> 8;
-               ++v;
-               x1 = v->x >> 8;
-               y1 = v->y >> 8;
-               if(clip_line(&x0, &y0, &x1, &y1, 0, 0, pfill_fb.width, pfill_fb.height)) {
-                       draw_line(x0, y0, x1, y1, color);
-               }
-       }
-       x0 = verts[0].x >> 8;
-       y0 = verts[0].y >> 8;
-       if(clip_line(&x1, &y1, &x0, &y0, 0, 0, pfill_fb.width, pfill_fb.height)) {
-               draw_line(x1, y1, x0, y0, color);
-       }
-}
-
-void polyfill_tex_wire(struct pvertex *verts, int nverts)
-{
-       polyfill_wire(verts, nverts);   /* TODO */
-}
-
-void polyfill_blend_wire(struct pvertex *verts, int nverts)
-{
-       polyfill_wire(verts, nverts);   /* TODO */
-}
-
-void polyfill_blend_tex_wire(struct pvertex *verts, int nverts)
-{
-       polyfill_wire(verts, nverts);   /* TODO */
-}
-
-#define NEXTIDX(x) (((x) - 1 + nverts) % nverts)
-#define PREVIDX(x) (((x) + 1) % nverts)
-
-/* XXX
- * When HIGH_QUALITY is defined, the rasterizer calculates slopes for attribute
- * interpolation on each scanline separately; otherwise the slope for each
- * attribute would be calculated once for the whole polygon, which is faster,
- * but produces some slight quantization artifacts, due to the limited precision
- * of fixed-point calculations.
- */
-#define HIGH_QUALITY
-
-/* extra bits of precision to use when interpolating colors.
- * try tweaking this if you notice strange quantization artifacts.
- */
-#define COLOR_SHIFT    12
-
-
-#define POLYFILL polyfill_flat
-#define SCANEDGE scanedge_flat
-#undef GOURAUD
-#undef TEXMAP
-#undef BLEND
-#include "polytmpl.h"
-#undef POLYFILL
-#undef SCANEDGE
-
-#define POLYFILL polyfill_gouraud
-#define SCANEDGE scanedge_gouraud
-#define GOURAUD
-#undef TEXMAP
-#undef BLEND
-#include "polytmpl.h"
-#undef POLYFILL
-#undef SCANEDGE
-
-#define POLYFILL polyfill_tex_flat
-#define SCANEDGE scanedge_tex_flat
-#undef GOURAUD
-#define TEXMAP
-#undef BLEND
-#include "polytmpl.h"
-#undef POLYFILL
-#undef SCANEDGE
-
-#define POLYFILL polyfill_tex_gouraud
-#define SCANEDGE scanedge_tex_gouraud
-#define GOURAUD
-#define TEXMAP
-#undef BLEND
-#include "polytmpl.h"
-#undef POLYFILL
-#undef SCANEDGE
-
-#define POLYFILL polyfill_blend_flat
-#define SCANEDGE scanedge_blend_flat
-#undef GOURAUD
-#undef TEXMAP
-#define BLEND
-#include "polytmpl.h"
-#undef POLYFILL
-#undef SCANEDGE
-
-#define POLYFILL polyfill_blend_gouraud
-#define SCANEDGE scanedge_blend_gouraud
-#define GOURAUD
-#undef TEXMAP
-#define BLEND
-#include "polytmpl.h"
-#undef POLYFILL
-#undef SCANEDGE
-
-#define POLYFILL polyfill_blend_tex_flat
-#define SCANEDGE scanedge_blend_tex_flat
-#undef GOURAUD
-#define TEXMAP
-#define BLEND
-#include "polytmpl.h"
-#undef POLYFILL
-#undef SCANEDGE
-
-#define POLYFILL polyfill_blend_tex_gouraud
-#define SCANEDGE scanedge_blend_tex_gouraud
-#define GOURAUD
-#define TEXMAP
-#define BLEND
-#include "polytmpl.h"
-#undef POLYFILL
-#undef SCANEDGE