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112 lines
3.9 KiB
C
112 lines
3.9 KiB
C
/*
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* Cogl
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*
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* A Low Level GPU Graphics and Utilities API
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*
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* Copyright (C) 2012 Intel Corporation.
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy,
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* modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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*
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*/
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#if !defined(__COGL_H_INSIDE__) && !defined(COGL_COMPILATION)
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#error "Only <cogl/cogl.h> can be included directly."
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#endif
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#ifndef __COGL_PRIMITIVE_TEXTURE_H__
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#define __COGL_PRIMITIVE_TEXTURE_H__
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#include "cogl-types.h"
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G_BEGIN_DECLS
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/**
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* SECTION:cogl-primitive-texture
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* @short_description: Interface for low-level textures like
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* #CoglTexture2D.
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*
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* A #CoglPrimitiveTexture is a texture that is directly represented
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* by a single texture on the GPU. For example this could be a
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* #CoglTexture2D. This is opposed to high level meta textures which
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* may be composed of multiple primitive textures or a sub-region of
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* another texture such as #CoglAtlasTexture and #CoglTexture2DSliced.
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*
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* A texture that implements this interface can be directly used with
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* the low level cogl_primitive_draw() API. Other types of textures
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* need to be first resolved to primitive textures using the
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* #CoglMetaTexture interface.
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*
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* <note>Most developers won't need to use this interface directly but
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* still it is worth understanding the distinction between high-level
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* and primitive textures because you may find other references in the
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* documentation that detail limitations of using
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* primitive textures.</note>
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*/
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#if defined(__COGL_H_INSIDE__) && !defined(COGL_ENABLE_MUTTER_API) && \
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!defined(COGL_GIR_SCANNING)
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/* For the public C api we typedef interface types as void to avoid needing
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* lots of casting in code and instead we will rely on runtime type checking
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* for these objects. */
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typedef void CoglPrimitiveTexture;
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#else
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typedef struct _CoglPrimitiveTexture CoglPrimitiveTexture;
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#define COGL_PRIMITIVE_TEXTURE(X) ((CoglPrimitiveTexture *)X)
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#endif
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/**
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* cogl_is_primitive_texture:
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* @object: A #CoglObject pointer
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*
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* Gets whether the given object references a primitive texture object.
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*
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* Return value: %TRUE if the pointer references a primitive texture, and
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* %FALSE otherwise
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* Since: 2.0
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* Stability: unstable
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*/
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gboolean
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cogl_is_primitive_texture (void *object);
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/**
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* cogl_primitive_texture_set_auto_mipmap:
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* @primitive_texture: A #CoglPrimitiveTexture
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* @value: The new value for whether to auto mipmap
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*
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* Sets whether the texture will automatically update the smaller
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* mipmap levels after any part of level 0 is updated. The update will
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* only occur whenever the texture is used for drawing with a texture
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* filter that requires the lower mipmap levels. An application should
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* disable this if it wants to upload its own data for the other
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* levels. By default auto mipmapping is enabled.
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*
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* Since: 2.0
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* Stability: unstable
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*/
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void
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cogl_primitive_texture_set_auto_mipmap (CoglPrimitiveTexture *primitive_texture,
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gboolean value);
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G_END_DECLS
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#endif /* __COGL_PRIMITIVE_TEXTURE_H__ */
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