| 1 | /* $Id: depth.h,v 1.1 2000-02-29 00:48:29 sandervl Exp $ */
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| 2 |
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| 3 | /*
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| 4 | * Mesa 3-D graphics library
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| 5 | * Version: 3.1
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| 6 | *
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| 7 | * Copyright (C) 1999 Brian Paul All Rights Reserved.
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| 8 | *
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| 9 | * Permission is hereby granted, free of charge, to any person obtaining a
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| 10 | * copy of this software and associated documentation files (the "Software"),
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| 11 | * to deal in the Software without restriction, including without limitation
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| 12 | * the rights to use, copy, modify, merge, publish, distribute, sublicense,
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| 13 | * and/or sell copies of the Software, and to permit persons to whom the
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| 14 | * Software is furnished to do so, subject to the following conditions:
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| 15 | *
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| 16 | * The above copyright notice and this permission notice shall be included
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| 17 | * in all copies or substantial portions of the Software.
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| 18 | *
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| 19 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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| 20 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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| 21 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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| 22 | * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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| 23 | * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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| 24 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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| 25 | */
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| 26 |
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| 27 |
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| 28 |
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| 29 |
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| 30 |
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| 31 | #ifndef DEPTH_H
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| 32 | #define DEPTH_H
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| 33 |
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| 34 |
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| 35 | #include "types.h"
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| 36 |
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| 37 |
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| 38 | /*
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| 39 | * Return the address of the Z-buffer value for window coordinate (x,y):
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| 40 | */
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| 41 | #define Z_ADDRESS( CTX, X, Y ) \
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| 42 | ((CTX)->Buffer->Depth + (CTX)->Buffer->Width * (Y) + (X))
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| 43 |
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| 44 |
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| 45 |
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| 46 |
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| 47 | extern GLuint
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| 48 | gl_depth_test_span_generic( GLcontext* ctx, GLuint n, GLint x, GLint y,
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| 49 | const GLdepth z[], GLubyte mask[] );
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| 50 |
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| 51 | extern GLuint
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| 52 | gl_depth_test_span_less( GLcontext* ctx, GLuint n, GLint x, GLint y,
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| 53 | const GLdepth z[], GLubyte mask[] );
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| 54 |
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| 55 | extern GLuint
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| 56 | gl_depth_test_span_greater( GLcontext* ctx, GLuint n, GLint x, GLint y,
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| 57 | const GLdepth z[], GLubyte mask[] );
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| 58 |
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| 59 |
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| 60 |
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| 61 | extern void
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| 62 | gl_depth_test_pixels_generic( GLcontext* ctx,
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| 63 | GLuint n, const GLint x[], const GLint y[],
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| 64 | const GLdepth z[], GLubyte mask[] );
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| 65 |
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| 66 | extern void
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| 67 | gl_depth_test_pixels_less( GLcontext* ctx,
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| 68 | GLuint n, const GLint x[], const GLint y[],
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| 69 | const GLdepth z[], GLubyte mask[] );
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| 70 |
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| 71 | extern void
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| 72 | gl_depth_test_pixels_greater( GLcontext* ctx,
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| 73 | GLuint n, const GLint x[], const GLint y[],
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| 74 | const GLdepth z[], GLubyte mask[] );
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| 75 |
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| 76 |
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| 77 | extern void gl_read_depth_span_float( GLcontext* ctx,
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| 78 | GLuint n, GLint x, GLint y,
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| 79 | GLfloat depth[] );
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| 80 |
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| 81 |
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| 82 | extern void gl_read_depth_span_int( GLcontext* ctx, GLuint n, GLint x, GLint y,
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| 83 | GLdepth depth[] );
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| 84 |
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| 85 |
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| 86 | extern void gl_alloc_depth_buffer( GLcontext* ctx );
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| 87 |
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| 88 |
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| 89 | extern void gl_clear_depth_buffer( GLcontext* ctx );
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| 90 |
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| 91 |
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| 92 | extern void gl_ClearDepth( GLcontext* ctx, GLclampd depth );
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| 93 |
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| 94 | extern void gl_DepthFunc( GLcontext* ctx, GLenum func );
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| 95 |
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| 96 | extern void gl_DepthMask( GLcontext* ctx, GLboolean flag );
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| 97 |
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| 98 | #endif
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