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Diffstat (limited to 'xc/extras/Mesa/src/FX/fxsdettmp.h')
| -rw-r--r-- | xc/extras/Mesa/src/FX/fxsdettmp.h | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/xc/extras/Mesa/src/FX/fxsdettmp.h b/xc/extras/Mesa/src/FX/fxsdettmp.h new file mode 100644 index 000000000..7b77b36c2 --- /dev/null +++ b/xc/extras/Mesa/src/FX/fxsdettmp.h @@ -0,0 +1,161 @@ +/* -*- 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. + */ + + +/* + * Notes: the folowing code works only if count is > start. + * Corrently we are looking for the pattern: + * v0,v1,v2 v2,v1,v3, v2,v3,v4.... + * + * For this: + * #define STRIP0 ((u1 == v1) && (u2 == v0)) + * #define STRIP1 ((u0 == v0) && (u2 == v1)) + * + */ + + +static void TAG(render_vb_triangles_smooth_indirect_sd) + ( struct vertex_buffer *VB, + GLuint start, + GLuint count, + GLuint parity) +{ + GLint u0,u1,u2; + GLint v0,v1,v2; + GLuint *elt = VB->EltPtr->data; + + int i; + LOCAL_VARS + + INIT(GL_TRIANGLES); + + elt = &elt[start-1]; + u0 = *(++elt); + u1 = *(++elt); + u2 = *(++elt); + i = start+3; + while (i < count) + { + v0 = *(++elt); + v1 = *(++elt); + v2 = *(++elt); + + if (CLIPPED(u0,u1,u2)) + { + if (!CULLED(u0,u1,u2)) SENDCLIPTRI(u0,u1,u2); + } + else + { + if (STRIP0(u,v)) + { + int is_strips = 1; + int parity = 0; + STRIPSLOCAL_VAR + + FLUSHTRI(); + STARTSTRIPS(u0,u1,u2); + while (is_strips && i < count) + { + SENDSTRIPS(v2); + + u0 = v0; u1 = v1; u2 = v2; i+= 3; + v0 = *(++elt); + v1 = *(++elt); + v2 = *(++elt); + + if (parity) { + is_strips = STRIP0(u,v); + parity = 0; + } else { + is_strips = STRIP1(u,v); + parity = 1; + } + } + FLUSHSTRIPS(); + + if (i >= count) + return; + } + else + { + SENDTRI(u0,u1,u2); + } + } + u0 = v0; u1 = v1; u2 = v2; i+= 3; + } + if (CLIPPED(u0,u1,u2)) + { + if (!CULLED(u0,u1,u2)) SENDCLIPTRI(u0,u1,u2); + } + else + { + SENDTRI(u0,u1,u2); + } + FLUSHTRI(); + +} + +#ifndef PRESERVE_VB_DEFS +#undef SENDTRI +#undef STRIP0 +#undef STRIP1 +#undef LOCAL_VARS +#undef STRIPSLOCAL_VAR +#undef INIT +#undef SENDTRI +#undef FLUSHTRI +#undef STARTSTRIPS +#undef SENDSTRIPS +#undef FLUSHSTRIPS +#undef CLIPPED +#undef CULLED +#undef SENDCLIPTRI +#endif + +#ifndef PRESERVE_TAG +#undef TAG +#endif + +#undef PRESERVE_VB_DEFS +#undef PRESERVE_TAG |