diff options
Diffstat (limited to 'xc/lib/GL/mesa/src/drv/mga/mgatris.h')
| -rw-r--r-- | xc/lib/GL/mesa/src/drv/mga/mgatris.h | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/xc/lib/GL/mesa/src/drv/mga/mgatris.h b/xc/lib/GL/mesa/src/drv/mga/mgatris.h new file mode 100644 index 000000000..3b41900f1 --- /dev/null +++ b/xc/lib/GL/mesa/src/drv/mga/mgatris.h @@ -0,0 +1,189 @@ +/* + * GLX Hardware Device Driver for Matrox Millenium G200 + * Copyright (C) 1999 Wittawat Yamwong + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * WITTAWAT YAMWONG, OR ANY OTHER CONTRIBUTORS BE LIABLE FOR ANY CLAIM, + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE + * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + * + * Wittawat Yamwong <Wittawat.Yamwong@stud.uni-hannover.de> + */ + +#ifndef MGATIS_INC +#define MGATIS_INC + +#include "types.h" + +extern void mgaDDChooseRenderState(GLcontext *ctx); +extern void mgaDDTrifuncInit( void ); + + +/* Todo: + * - multidraw, ... + * - Antialiasing (?) + * - line and polygon stipple + * - select and feedback + * - stencil + * - point parameters + * - + */ +#define MGA_ANTIALIAS_BIT 0 /* ignored for now, no fallback */ +#define MGA_FLAT_BIT 0x1 +#define MGA_OFFSET_BIT 0x2 /* 3.1 only */ +#define MGA_TWOSIDE_BIT 0x4 /* 3.1 only */ +#define MGA_NODRAW_BIT 0x8 +#define MGA_FALLBACK_BIT 0x10 + +/* Not in use: + */ +#define MGA_FEEDBACK_BIT 0x20 +#define MGA_SELECT_BIT 0x40 +#define MGA_POINT_PARAM_BIT 0x80 /* not needed? */ + + + + +static __inline void mga_draw_triangle( mgaContextPtr mmesa, + mgaVertex *v0, + mgaVertex *v1, + mgaVertex *v2 ) +{ + mgaUI32 vertsize = mmesa->vertsize; + mgaUI32 *wv = mgaAllocVertexDwords( mmesa, 3 * vertsize ); + int j; + + for (j = 0 ; j < vertsize ; j++) + wv[j] = v0->ui[j]; + + wv += vertsize; + for (j = 0 ; j < vertsize ; j++) + wv[j] = v1->ui[j]; + + wv += vertsize; + for (j = 0 ; j < vertsize ; j++) + wv[j] = v2->ui[j]; +} + + +static __inline void mga_draw_point( mgaContextPtr mmesa, + mgaVertex *tmp, float sz ) +{ + mgaUI32 vertsize = mmesa->vertsize; + mgaUI32 *wv = mgaAllocVertexDwords( mmesa, 6*vertsize); + int j; + + *(float *)&wv[0] = tmp->warp1.x - sz; + *(float *)&wv[1] = tmp->warp1.y - sz; + for (j = 2 ; j < vertsize ; j++) + wv[j] = tmp->ui[j]; + wv += vertsize; + + *(float *)&wv[0] = tmp->warp1.x + sz; + *(float *)&wv[1] = tmp->warp1.y - sz; + for (j = 2 ; j < vertsize ; j++) + wv[j] = tmp->ui[j]; + wv += vertsize; + + *(float *)&wv[0] = tmp->warp1.x + sz; + *(float *)&wv[1] = tmp->warp1.y + sz; + for (j = 2 ; j < vertsize ; j++) + wv[j] = tmp->ui[j]; + wv += vertsize; + + *(float *)&wv[0] = tmp->warp1.x + sz; + *(float *)&wv[1] = tmp->warp1.y + sz; + for (j = 2 ; j < vertsize ; j++) + wv[j] = tmp->ui[j]; + wv += vertsize; + + *(float *)&wv[0] = tmp->warp1.x - sz; + *(float *)&wv[1] = tmp->warp1.y + sz; + for (j = 2 ; j < vertsize ; j++) + wv[j] = tmp->ui[j]; + wv += vertsize; + + *(float *)&wv[0] = tmp->warp1.x - sz; + *(float *)&wv[1] = tmp->warp1.y - sz; + for (j = 2 ; j < vertsize ; j++) + wv[j] = tmp->ui[j]; +} + + +static __inline void mga_draw_line( mgaContextPtr mmesa, + const mgaVertex *tmp0, + const mgaVertex *tmp1, + float width ) +{ + mgaUI32 vertsize = mmesa->vertsize; + mgaUI32 *wv = mgaAllocVertexDwords( mmesa, 6 * vertsize ); + float dx, dy, ix, iy; + int j; + + dx = tmp0->warp1.x - tmp1->warp1.x; + dy = tmp0->warp1.y - tmp1->warp1.y; + + ix = width * .5; iy = 0; + + if ((ix<.5) && (ix>0.1)) ix = .5; /* I want to see lines with width + 0.5 also */ + + if (dx * dx > dy * dy) { + iy = ix; ix = 0; + } + + *(float *)&wv[0] = tmp0->warp1.x - ix; + *(float *)&wv[1] = tmp0->warp1.y - iy; + for (j = 2 ; j < vertsize ; j++) + wv[j] = tmp0->ui[j]; + wv += vertsize; + + *(float *)&wv[0] = tmp1->warp1.x + ix; + *(float *)&wv[1] = tmp1->warp1.y + iy; + for (j = 2 ; j < vertsize ; j++) + wv[j] = tmp1->ui[j]; + wv += vertsize; + + *(float *)&wv[0] = tmp0->warp1.x + ix; + *(float *)&wv[1] = tmp0->warp1.y + iy; + for (j = 2 ; j < vertsize ; j++) + wv[j] = tmp0->ui[j]; + wv += vertsize; + + *(float *)&wv[0] = tmp0->warp1.x - ix; + *(float *)&wv[1] = tmp0->warp1.y - iy; + for (j = 2 ; j < vertsize ; j++) + wv[j] = tmp0->ui[j]; + wv += vertsize; + + *(float *)&wv[0] = tmp1->warp1.x - ix; + *(float *)&wv[1] = tmp1->warp1.y - iy; + for (j = 2 ; j < vertsize ; j++) + wv[j] = tmp1->ui[j]; + wv += vertsize; + + *(float *)&wv[0] = tmp1->warp1.x + ix; + *(float *)&wv[1] = tmp1->warp1.y + iy; + for (j = 2 ; j < vertsize ; j++) + wv[j] = tmp1->ui[j]; + wv += vertsize; +} + + + + +#endif |