Initial revision

1 files changed, 98 insertions, 0 deletions

diff --git a/src/mesa/main/depth.h b/src/mesa/main/depth.h
new file mode 100644
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+++ b/src/mesa/main/depth.h
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+/* $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