diff options
Diffstat (limited to 'xc/extras/Mesa/src/FX/fxsanity.c')
| -rw-r--r-- | xc/extras/Mesa/src/FX/fxsanity.c | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/xc/extras/Mesa/src/FX/fxsanity.c b/xc/extras/Mesa/src/FX/fxsanity.c new file mode 100644 index 000000000..9f815012e --- /dev/null +++ b/xc/extras/Mesa/src/FX/fxsanity.c @@ -0,0 +1,124 @@ +/* -*- mode: C; tab-width:8; c-basic-offset:2 -*- */ + +/* + * Mesa 3-D graphics library + * Version: 3.3 + * + * Copyright (C) 1999-2000 Brian Paul All Rights Reserved. + * + * 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 + * BRIAN PAUL 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. + * + * + * Original Mesa / 3Dfx device driver (C) 1999 David Bucciarelli, by the + * terms stated above. + * + * Thank you for your contribution, David! + * + * Please make note of the above copyright/license statement. If you + * contributed code or bug fixes to this code under the previous (GNU + * Library) license and object to the new license, your code will be + * removed at your request. Please see the Mesa docs/COPYRIGHT file + * for more information. + * + * Additional Mesa/3Dfx driver developers: + * Daryll Strauss <daryll@precisioninsight.com> + * Keith Whitwell <keith@precisioninsight.com> + * + * See fxapi.h for more revision/author details. + */ + + +#ifdef HAVE_CONFIG_H +#include "conf.h" +#endif + + + +#if defined(FX) +#include "fxdrv.h" + +/* I have found this quite useful in tracking down transformation & + * clipping bugs. If you get a random graphics card freeze, running + * your triangles through this will probably catch the problem. + */ + +#define WID 640 +#define HI 480 + +#undef grDrawTriangle + +void fx_sanity_triangle( GrVertex *v1, GrVertex *v2, GrVertex *v3 ) +{ + GLuint rv = 1, print = 0; + + GLfloat area = ((v1->x - v3->x) * (v2->y - v3->y) - + (v1->y - v3->y) * (v2->x - v3->x)); + + if (v1->x < 0 || v1->y < 0 || v1->x > WID || v1->y > HI || + v2->x < 0 || v2->y < 0 || v2->x > WID || v2->y > HI || + v3->x < 0 || v3->y < 0 || v3->x > WID || v3->y > HI) + { + fprintf(stderr,"not clipped/set up!!!!!\n"); + rv = 0; + print = 1; + } + + if (area > (WID*HI)) { + fprintf(stderr,"too big\n"); + rv = 0; + } + if (v1->oow == 0 || v2->oow == 0 || v3->oow == 0) { + fprintf(stderr,"zero oow\n"); + rv = 0; + } + if (0 && area == 0) { + fprintf(stderr,"zero area %p %p %p\n", v1,v2,v3); + rv =0; + } + + if (print) { + fprintf(stderr,"v1: %f %f %f %f col %.0f %.0f %.0f %.0f t0 %f %f %f t1 %f %f %f\n", + v1->x, v1->y, v1->ooz, v1->oow, + v1->r, v1->g, v1->b, v1->a, + v1->tmuvtx[0].sow, v1->tmuvtx[0].tow, v1->tmuvtx[0].oow, + v1->tmuvtx[1].sow, v1->tmuvtx[1].tow, v1->tmuvtx[1].oow); + fprintf(stderr,"v2: %f %f %f %f col %.0f %.0f %.0f %.0f t0 %f %f %f t1 %f %f %f\n", + v2->x, v2->y, v2->ooz, v2->oow, + v2->r, v2->g, v2->b, v2->a, + v2->tmuvtx[0].sow, v2->tmuvtx[0].tow, v2->tmuvtx[0].oow, + v2->tmuvtx[1].sow, v2->tmuvtx[1].tow, v2->tmuvtx[1].oow); + fprintf(stderr,"v3: %f %f %f %f col %.0f %.0f %.0f %.0f t0 %f %f %f t1 %f %f %f\n", + v3->x, v3->y, v3->ooz, v3->oow, + v3->r, v3->g, v3->b, v3->a, + v3->tmuvtx[0].sow, v3->tmuvtx[0].tow, v3->tmuvtx[0].oow, + v3->tmuvtx[1].sow, v3->tmuvtx[1].tow, v3->tmuvtx[1].oow); + } + + if (1) + FX_grDrawTriangle(v1,v2,v3); + else + fprintf(stderr, "\n\n\n"); +} + +#else + +void gl_fxsanity_dummy() +{ +} + +#endif |