diff options
Diffstat (limited to 'src/mesa/main/texstate.c')
| -rw-r--r-- | src/mesa/main/texstate.c | 53 |
1 files changed, 41 insertions, 12 deletions
diff --git a/src/mesa/main/texstate.c b/src/mesa/main/texstate.c index dce8c362da3..428d0a0d01a 100644 --- a/src/mesa/main/texstate.c +++ b/src/mesa/main/texstate.c @@ -2,7 +2,7 @@ * Mesa 3-D graphics library * Version: 6.5 * - * Copyright (C) 1999-2005 Brian Paul All Rights Reserved. + * Copyright (C) 1999-2006 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"), @@ -63,6 +63,35 @@ static const struct gl_tex_env_combine_state default_combine_state = { }; +/** + * Copy a texture binding. Helper used by _mesa_copy_texture_state(). + */ +static void +copy_texture_binding(const GLcontext *ctx, + struct gl_texture_object **dst, + struct gl_texture_object *src) +{ + /* only copy if names differ (per OpenGL SI) */ + if ((*dst)->Name != src->Name) { + /* unbind/delete dest binding which we're changing */ + (*dst)->RefCount--; + if ((*dst)->RefCount == 0) { + /* time to delete this texture object */ + ASSERT((*dst)->Name != 0); + ASSERT(ctx->Driver.DeleteTexture); + /* XXX cast-away const, unfortunately */ + (*ctx->Driver.DeleteTexture)((GLcontext *) ctx, *dst); + } + /* make new binding, incrementing ref count */ + *dst = src; + src->RefCount++; + } +} + + +/** + * Used by glXCopyContext to copy texture state from one context to another. + */ void _mesa_copy_texture_state( const GLcontext *src, GLcontext *dst ) { @@ -112,17 +141,17 @@ _mesa_copy_texture_state( const GLcontext *src, GLcontext *dst ) dst->Texture.Unit[i].Combine.ScaleShiftRGB = src->Texture.Unit[i].Combine.ScaleShiftRGB; dst->Texture.Unit[i].Combine.ScaleShiftA = src->Texture.Unit[i].Combine.ScaleShiftA; - /* texture object state */ - _mesa_copy_texture_object(dst->Texture.Unit[i].Current1D, - src->Texture.Unit[i].Current1D); - _mesa_copy_texture_object(dst->Texture.Unit[i].Current2D, - src->Texture.Unit[i].Current2D); - _mesa_copy_texture_object(dst->Texture.Unit[i].Current3D, - src->Texture.Unit[i].Current3D); - _mesa_copy_texture_object(dst->Texture.Unit[i].CurrentCubeMap, - src->Texture.Unit[i].CurrentCubeMap); - _mesa_copy_texture_object(dst->Texture.Unit[i].CurrentRect, - src->Texture.Unit[i].CurrentRect); + /* copy texture object bindings, not contents of texture objects */ + copy_texture_binding(src, &dst->Texture.Unit[i].Current1D, + src->Texture.Unit[i].Current1D); + copy_texture_binding(src, &dst->Texture.Unit[i].Current2D, + src->Texture.Unit[i].Current2D); + copy_texture_binding(src, &dst->Texture.Unit[i].Current3D, + src->Texture.Unit[i].Current3D); + copy_texture_binding(src, &dst->Texture.Unit[i].CurrentCubeMap, + src->Texture.Unit[i].CurrentCubeMap); + copy_texture_binding(src, &dst->Texture.Unit[i].CurrentRect, + src->Texture.Unit[i].CurrentRect); } } |