18fb1ffab5
This exposes cogl_sub_texture_new() and cogl_is_sub_texture() as experimental public API. Previously sub-textures were only exposed via cogl_texture_new_from_sub_texture() so there wasn't a corresponding CoglSubTexture type. A CoglSubTexture is a high-level texture defined as a sub-region of some other parent texture. CoglSubTextures are high level textures that implement the CoglMetaTexture interface which can be used to manually handle texture repeating. Reviewed-by: Neil Roberts <neil@linux.intel.com>
60 lines
2 KiB
C
60 lines
2 KiB
C
/*
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* Cogl
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*
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* An object oriented GL/GLES Abstraction/Utility Layer
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*
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* Copyright (C) 2009 Intel Corporation.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*
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*
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*/
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#ifndef __COGL_SUB_TEXTURE_PRIVATE_H
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#define __COGL_SUB_TEXTURE_PRIVATE_H
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#include "cogl-texture-private.h"
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#include <glib.h>
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struct _CoglSubTexture
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{
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CoglTexture _parent;
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/* This is the texture that was passed in to
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_cogl_sub_texture_new. If this is also a sub texture then we will
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use the full texture from that to render instead of making a
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chain. However we want to preserve the next texture in case the
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user is expecting us to keep a reference and also so that we can
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later add a cogl_sub_texture_get_parent_texture() function. */
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CoglTexture *next_texture;
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/* This is the texture that will actually be used to draw. It will
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point to the end of the chain if a sub texture of a sub texture
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is created */
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CoglTexture *full_texture;
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/* The region represented by this sub-texture. This is the region of
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full_texture which won't necessarily be the same as the region
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passed to _cogl_sub_texture_new if next_texture is actually
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already a sub texture */
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int sub_x;
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int sub_y;
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int sub_width;
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int sub_height;
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};
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GQuark
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_cogl_handle_sub_texture_get_type (void);
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#endif /* __COGL_SUB_TEXTURE_PRIVATE_H */
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