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| author | Brian Paul <brian.paul@tungstengraphics.com> | 2003-04-21 15:02:17 +0000 |
|---|---|---|
| committer | Brian Paul <brian.paul@tungstengraphics.com> | 2003-04-21 15:02:17 +0000 |
| commit | e5b244ff7f984805c1bcc020342f1300f2639c71 (patch) | |
| tree | 2662820db42730bb1f0269a2aef440309a81d083 /src/mesa/main/depth.c | |
| parent | 2780bb824f542c47d5412a3909eaa84ed3f13451 (diff) | |
| download | external_mesa3d-e5b244ff7f984805c1bcc020342f1300f2639c71.zip external_mesa3d-e5b244ff7f984805c1bcc020342f1300f2639c71.tar.gz external_mesa3d-e5b244ff7f984805c1bcc020342f1300f2639c71.tar.bz2 | |
Implemented GL_EXT_depth_bounds_test.
Diffstat (limited to 'src/mesa/main/depth.c')
| -rw-r--r-- | src/mesa/main/depth.c | 32 |
1 files changed, 28 insertions, 4 deletions
diff --git a/src/mesa/main/depth.c b/src/mesa/main/depth.c index 8383bcc..9d95500 100644 --- a/src/mesa/main/depth.c +++ b/src/mesa/main/depth.c @@ -1,10 +1,8 @@ -/* $Id: depth.c,v 1.31 2002/10/24 23:57:20 brianp Exp $ */ - /* * Mesa 3-D graphics library - * Version: 4.1 + * Version: 5.1 * - * Copyright (C) 1999-2002 Brian Paul All Rights Reserved. + * Copyright (C) 1999-2003 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"), @@ -116,3 +114,29 @@ _mesa_DepthMask( GLboolean flag ) if (ctx->Driver.DepthMask) ctx->Driver.DepthMask( ctx, flag ); } + + + +/* GL_EXT_depth_bounds_test */ +void +_mesa_DepthBoundsEXT( GLclampd zmin, GLclampd zmax ) +{ + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END(ctx); + + if (zmin > zmax) { + _mesa_error(ctx, GL_INVALID_VALUE, "glDepthBoundsEXT(zmin > zmax)"); + return; + } + + zmin = CLAMP(zmin, 0.0, 1.0); + zmax = CLAMP(zmax, 0.0, 1.0); + + if (ctx->Depth.BoundsMin == zmin && ctx->Depth.BoundsMax == zmax) + return; + + FLUSH_VERTICES(ctx, _NEW_DEPTH); + ctx->Depth.BoundsMin = zmin; + ctx->Depth.BoundsMax = zmax; +} + |