17117f1b4Smrg/*
27117f1b4Smrg * Mesa 3-D graphics library
37117f1b4Smrg *
47117f1b4Smrg * Copyright (C) 1999-2006  Brian Paul   All Rights Reserved.
57117f1b4Smrg *
67117f1b4Smrg * Permission is hereby granted, free of charge, to any person obtaining a
77117f1b4Smrg * copy of this software and associated documentation files (the "Software"),
87117f1b4Smrg * to deal in the Software without restriction, including without limitation
97117f1b4Smrg * the rights to use, copy, modify, merge, publish, distribute, sublicense,
107117f1b4Smrg * and/or sell copies of the Software, and to permit persons to whom the
117117f1b4Smrg * Software is furnished to do so, subject to the following conditions:
127117f1b4Smrg *
137117f1b4Smrg * The above copyright notice and this permission notice shall be included
147117f1b4Smrg * in all copies or substantial portions of the Software.
157117f1b4Smrg *
167117f1b4Smrg * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
177117f1b4Smrg * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
187117f1b4Smrg * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
19af69d88dSmrg * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
20af69d88dSmrg * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21af69d88dSmrg * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22af69d88dSmrg * OTHER DEALINGS IN THE SOFTWARE.
237117f1b4Smrg */
247117f1b4Smrg
257117f1b4Smrg
267117f1b4Smrg#ifndef S_DEPTH_H
277117f1b4Smrg#define S_DEPTH_H
287117f1b4Smrg
297117f1b4Smrg
303464ebd5Sriastradh#include "main/glheader.h"
313464ebd5Sriastradh#include "s_span.h"
323464ebd5Sriastradh
333464ebd5Sriastradhstruct gl_context;
343464ebd5Sriastradhstruct gl_renderbuffer;
357117f1b4Smrg
367117f1b4Smrg
377117f1b4Smrgextern GLuint
383464ebd5Sriastradh_swrast_depth_test_span( struct gl_context *ctx, SWspan *span);
397117f1b4Smrg
404a49301eSmrgextern void
413464ebd5Sriastradh_swrast_depth_clamp_span( struct gl_context *ctx, SWspan *span );
427117f1b4Smrg
437117f1b4Smrgextern GLboolean
443464ebd5Sriastradh_swrast_depth_bounds_test( struct gl_context *ctx, SWspan *span );
457117f1b4Smrg
467117f1b4Smrg
477117f1b4Smrgextern void
483464ebd5Sriastradh_swrast_read_depth_span_float( struct gl_context *ctx, struct gl_renderbuffer *rb,
497117f1b4Smrg                               GLint n, GLint x, GLint y, GLfloat depth[] );
507117f1b4Smrg
517117f1b4Smrgextern void
52af69d88dSmrg_swrast_clear_depth_buffer(struct gl_context *ctx);
537117f1b4Smrg
547117f1b4Smrgextern void
55af69d88dSmrg_swrast_clear_depth_stencil_buffer(struct gl_context *ctx);
567117f1b4Smrg
577117f1b4Smrg
587117f1b4Smrg#endif
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