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Change behaviour of glDeleteTextures as discussed on ARB list.

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glDeleteTexture makes the texture ID immediately free for re-use
while the actual texture object lingers until its reference count goes
to zero (when no longer bound by any rendering context).
This commit is contained in:
Brian Paul
2005-01-19 14:50:52 +00:00
parent 140f99f81c
commit 42fee73aad
1 changed files with 9 additions and 14 deletions
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23
src/mesa/main/texobj.c
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@@ -5,9 +5,9 @@
/* /*
* Mesa 3-D graphics library * Mesa 3-D graphics library
* Version: 6.2 * Version: 6.3
* *
* Copyright (C) 1999-2004 Brian Paul All Rights Reserved. * Copyright (C) 1999-2005 Brian Paul All Rights Reserved.
* *
* Permission is hereby granted, free of charge, to any person obtaining a * Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"), * copy of this software and associated documentation files (the "Software"),
@@ -701,17 +701,14 @@ _mesa_DeleteTextures( GLsizei n, const GLuint *textures)
} }
ctx->NewState |= _NEW_TEXTURE; ctx->NewState |= _NEW_TEXTURE;
/* If user hasn't already tried to delete the texture... */ /* The texture _name_ is now free for re-use. */
if (!delObj->DeletePending) { _mesa_remove_texture_object(ctx, delObj);
delObj->DeletePending = GL_TRUE; /* The actual texture object will not be freed until it's no
delObj->RefCount--; * longer bound in any context.
ASSERT(delObj->RefCount >= 0); */
} delObj->RefCount--;
/* See if we can really delete the texture now */
if (delObj->RefCount == 0) { if (delObj->RefCount == 0) {
ASSERT(delObj->Name != 0); /* Never delete default tex objects */ ASSERT(delObj->Name != 0); /* Never delete default tex objs */
_mesa_remove_texture_object(ctx, delObj);
ASSERT(ctx->Driver.DeleteTexture); ASSERT(ctx->Driver.DeleteTexture);
(*ctx->Driver.DeleteTexture)(ctx, delObj); (*ctx->Driver.DeleteTexture)(ctx, delObj);
} }
@@ -892,8 +889,6 @@ _mesa_BindTexture( GLenum target, GLuint texName )
ASSERT(oldTexObj->RefCount >= 0); ASSERT(oldTexObj->RefCount >= 0);
if (oldTexObj->RefCount == 0) { if (oldTexObj->RefCount == 0) {
ASSERT(oldTexObj->Name != 0); ASSERT(oldTexObj->Name != 0);
ASSERT(oldTexObj->DeletePending);
_mesa_remove_texture_object(ctx, oldTexObj);
ASSERT(ctx->Driver.DeleteTexture); ASSERT(ctx->Driver.DeleteTexture);
(*ctx->Driver.DeleteTexture)( ctx, oldTexObj ); (*ctx->Driver.DeleteTexture)( ctx, oldTexObj );
} }