diff options
Diffstat (limited to 'src/mesa/pipe/softpipe/g_prim_cull.c')
-rw-r--r-- | src/mesa/pipe/softpipe/g_prim_cull.c | 119 |
1 files changed, 0 insertions, 119 deletions
diff --git a/src/mesa/pipe/softpipe/g_prim_cull.c b/src/mesa/pipe/softpipe/g_prim_cull.c deleted file mode 100644 index 633fbcc492..0000000000 --- a/src/mesa/pipe/softpipe/g_prim_cull.c +++ /dev/null @@ -1,119 +0,0 @@ -/************************************************************************** - * - * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. - * 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, sub license, 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 (including the - * next paragraph) 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 NON-INFRINGEMENT. - * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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. - * - **************************************************************************/ - -/* Authors: Keith Whitwell <keith@tungstengraphics.com> - */ -#include "imports.h" - -#include "g_context.h" -#include "g_prim.h" - - - -struct cull_stage { - struct prim_stage stage; - GLuint mode; -}; - - - -static INLINE struct cull_stage *cull_stage( struct prim_stage *stage ) -{ - return (struct cull_stage *)stage; -} - - -static void cull_begin( struct prim_stage *stage ) -{ - struct cull_stage *cull = cull_stage(stage); - - cull->mode = stage->generic->setup.cull_mode; - - stage->next->begin( stage->next ); -} - - -static void cull_tri( struct prim_stage *stage, - struct prim_header *header ) -{ - /* Window coords: */ - GLfloat *v0 = (GLfloat *)&(header->v[0]->data[0]); - GLfloat *v1 = (GLfloat *)&(header->v[1]->data[0]); - GLfloat *v2 = (GLfloat *)&(header->v[2]->data[0]); - - GLfloat ex = v0[0] - v2[0]; - GLfloat ey = v0[1] - v2[1]; - GLfloat fx = v1[0] - v2[0]; - GLfloat fy = v1[1] - v2[1]; - - header->det = ex * fy - ey * fx; - - _mesa_printf("%s %f\n", __FUNCTION__, header->det ); - - if (header->det != 0) { - GLuint mode = (header->det < 0) ? WINDING_CW : WINDING_CCW; - - if ((mode & cull_stage(stage)->mode) == 0) - stage->next->tri( stage->next, header ); - } -} - - -static void cull_line( struct prim_stage *stage, - struct prim_header *header ) -{ - stage->next->line( stage->next, header ); -} - - -static void cull_point( struct prim_stage *stage, - struct prim_header *header ) -{ - stage->next->point( stage->next, header ); -} - -static void cull_end( struct prim_stage *stage ) -{ - stage->next->end( stage->next ); -} - -struct prim_stage *prim_cull( struct generic_context *generic ) -{ - struct cull_stage *cull = CALLOC_STRUCT(cull_stage); - - prim_alloc_tmps( &cull->stage, 0 ); - - cull->stage.generic = generic; - cull->stage.next = NULL; - cull->stage.begin = cull_begin; - cull->stage.point = cull_point; - cull->stage.line = cull_line; - cull->stage.tri = cull_tri; - cull->stage.end = cull_end; - - return &cull->stage; -} |