| /* $Id: depth.h,v 1.1 1999/08/19 00:55:41 jtg Exp $ */ |
| |
| /* |
| * Mesa 3-D graphics library |
| * Version: 3.1 |
| * |
| * Copyright (C) 1999 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. |
| */ |
| |
| |
| |
| |
| |
| #ifndef DEPTH_H |
| #define DEPTH_H |
| |
| |
| #include "types.h" |
| |
| |
| /* |
| * Return the address of the Z-buffer value for window coordinate (x,y): |
| */ |
| #define Z_ADDRESS( CTX, X, Y ) \ |
| ((CTX)->Buffer->Depth + (CTX)->Buffer->Width * (Y) + (X)) |
| |
| |
| |
| |
| extern GLuint |
| gl_depth_test_span_generic( GLcontext* ctx, GLuint n, GLint x, GLint y, |
| const GLdepth z[], GLubyte mask[] ); |
| |
| extern GLuint |
| gl_depth_test_span_less( GLcontext* ctx, GLuint n, GLint x, GLint y, |
| const GLdepth z[], GLubyte mask[] ); |
| |
| extern GLuint |
| gl_depth_test_span_greater( GLcontext* ctx, GLuint n, GLint x, GLint y, |
| const GLdepth z[], GLubyte mask[] ); |
| |
| |
| |
| extern void |
| gl_depth_test_pixels_generic( GLcontext* ctx, |
| GLuint n, const GLint x[], const GLint y[], |
| const GLdepth z[], GLubyte mask[] ); |
| |
| extern void |
| gl_depth_test_pixels_less( GLcontext* ctx, |
| GLuint n, const GLint x[], const GLint y[], |
| const GLdepth z[], GLubyte mask[] ); |
| |
| extern void |
| gl_depth_test_pixels_greater( GLcontext* ctx, |
| GLuint n, const GLint x[], const GLint y[], |
| const GLdepth z[], GLubyte mask[] ); |
| |
| |
| extern void gl_read_depth_span_float( GLcontext* ctx, |
| GLuint n, GLint x, GLint y, |
| GLfloat depth[] ); |
| |
| |
| extern void gl_read_depth_span_int( GLcontext* ctx, GLuint n, GLint x, GLint y, |
| GLdepth depth[] ); |
| |
| |
| extern void gl_alloc_depth_buffer( GLcontext* ctx ); |
| |
| |
| extern void gl_clear_depth_buffer( GLcontext* ctx ); |
| |
| |
| extern void gl_ClearDepth( GLcontext* ctx, GLclampd depth ); |
| |
| extern void gl_DepthFunc( GLcontext* ctx, GLenum func ); |
| |
| extern void gl_DepthMask( GLcontext* ctx, GLboolean flag ); |
| |
| #endif |