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-
- /* $Id: depth.h,v 1.2 1999/10/08 09:27:10 keithw 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
-