1d8fd64e1c
CoglMetaTexture is an interface for dealing with high level textures that may be comprised of one or more low-level textures internally. The interface allows the development of primitive drawing APIs that can draw with high-level textures (such as atlas textures) even though the GPU doesn't natively understand these texture types. There is currently just one function that's part of this interface: cogl_meta_texture_foreach_in_region() which allows an application to resolve the internal, low-level textures of a high-level texture. cogl_rectangle() uses this API for example so that it can easily emulate the _REPEAT wrap mode for textures that the hardware can't natively handle repeating of. Reviewed-by: Neil Roberts <neil@linux.intel.com>
79 lines
2.5 KiB
C
79 lines
2.5 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_TEXTURE_RECTANGLE_H
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#define __COGL_TEXTURE_RECTANGLE_H
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#include "cogl-handle.h"
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#include "cogl-pipeline-private.h"
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#include "cogl-texture-private.h"
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#define COGL_TEXTURE_RECTANGLE(tex) ((CoglTextureRectangle *) tex)
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typedef struct _CoglTextureRectangle CoglTextureRectangle;
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struct _CoglTextureRectangle
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{
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CoglTexture _parent;
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/* The internal format of the GL texture represented as a
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CoglPixelFormat */
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CoglPixelFormat format;
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/* The internal format of the GL texture represented as a GL enum */
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GLenum gl_format;
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/* The texture object number */
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GLuint gl_texture;
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int width;
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int height;
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GLenum min_filter;
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GLenum mag_filter;
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GLint wrap_mode_s;
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GLint wrap_mode_t;
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gboolean is_foreign;
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};
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gboolean
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_cogl_is_texture_rectangle (void *object);
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GQuark
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_cogl_handle_texture_rectangle_get_type (void);
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CoglHandle
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_cogl_texture_rectangle_new_with_size (unsigned int width,
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unsigned int height,
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CoglTextureFlags flags,
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CoglPixelFormat internal_format);
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CoglHandle
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_cogl_texture_rectangle_new_from_bitmap (CoglBitmap *bmp,
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CoglTextureFlags flags,
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CoglPixelFormat internal_format);
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CoglHandle
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_cogl_texture_rectangle_new_from_foreign (GLuint gl_handle,
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GLuint width,
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GLuint height,
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CoglPixelFormat format);
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#endif /* __COGL_TEXTURE_RECTANGLE_H */
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