e7f1582630
This interface represents any textures that are backed by a single texture in GL and that can be used directly with the cogl_framebuffer_draw_attributes family of functions. This currently equates to CoglTexture2D, CoglTexture3D and CoglTextureRectangle. The interface currently has only one method called cogl_primitive_set_auto_mipmap. This replaces the COGL_TEXTURE_NO_AUTO_MIPMAP flag from the CoglTextureFlags parameter in the constructors. None of the other flags in CoglTextureFlags make sense for primitive textures so it doesn't seem like a good idea to need them for primitive constructors. There is a boolean in the vtable to mark whether a texture type is primitive which the new cogl_is_primitive function uses. There is also a new texture virtual called set_auto_mipmap which is only required to be implemented for primitive textures. Reviewed-by: Robert Bragg <robert@linux.intel.com>
99 lines
3.3 KiB
C
99 lines
3.3 KiB
C
/*
|
|
* Cogl
|
|
*
|
|
* An object oriented GL/GLES Abstraction/Utility Layer
|
|
*
|
|
* Copyright (C) 2012 Intel Corporation.
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library. If not, see
|
|
* <http://www.gnu.org/licenses/>.
|
|
*
|
|
*
|
|
*/
|
|
|
|
#if !defined(__COGL_H_INSIDE__) && !defined(CLUTTER_COMPILATION)
|
|
#error "Only <cogl/cogl.h> can be included directly."
|
|
#endif
|
|
|
|
#ifndef __COGL_PRIMITIVE_TEXTURE_H__
|
|
#define __COGL_PRIMITIVE_TEXTURE_H__
|
|
|
|
#include <glib.h>
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
/**
|
|
* SECTION:cogl-primitive-texture
|
|
* @short_description: Interface for low-level textures like
|
|
* #CoglTexture2D and #CoglTexture3D.
|
|
*
|
|
* A #CoglPrimitiveTexture is a texture that is directly represented
|
|
* by a single texture on the GPU. For example these could be a
|
|
* #CoglTexture2D, #CoglTexture3D or #CoglTextureRectangle. This is
|
|
* opposed to high level meta textures which may be composed of
|
|
* multiple primitive textures or a sub-region of another texture such
|
|
* as #CoglAtlasTexture and #CoglTexture2DSliced.
|
|
*
|
|
* A texture that implements this interface can be directly used with
|
|
* the attributes API such as cogl_framebuffer_draw_attributes().
|
|
* Other types of textures need to be first resolved to primitive
|
|
* textures using the #CoglMetaTexture interface.
|
|
*
|
|
* <note>Most developers won't need to use this interface directly but
|
|
* still it is worth understanding the distinction between high-level
|
|
* and primitive textures because you may find other references in the
|
|
* documentation that detail limitations of using
|
|
* primitive textures.</note>
|
|
*/
|
|
|
|
typedef struct _CoglPrimitiveTexture CoglPrimitiveTexture;
|
|
#define COGL_PRIMITIVE_TEXTURE(X) ((CoglPrimitiveTexture *)X)
|
|
|
|
/**
|
|
* cogl_is_primitive_texture:
|
|
* @object: A #CoglObject pointer
|
|
*
|
|
* Gets whether the given object references a primitive texture object.
|
|
*
|
|
* Return value: %TRUE if the pointer references a primitive texture, and
|
|
* %FALSE otherwise
|
|
* Since: 2.0
|
|
* Stability: unstable
|
|
*/
|
|
gboolean
|
|
cogl_is_primitive_texture (void *object);
|
|
|
|
/**
|
|
* cogl_primitive_texture_set_auto_mipmap:
|
|
* @primitive_texture: A #CoglPrimitiveTexture
|
|
* @value: The new value for whether to auto mipmap
|
|
*
|
|
* Sets whether the texture will automatically update the smaller
|
|
* mipmap levels after any part of level 0 is updated. The update will
|
|
* only occur whenever the texture is used for drawing with a texture
|
|
* filter that requires the lower mipmap levels. An application should
|
|
* disable this if it wants to upload its own data for the other
|
|
* levels. By default auto mipmapping is enabled.
|
|
*
|
|
* Since: 2.0
|
|
* Stability: unstable
|
|
*/
|
|
void
|
|
cogl_primitive_texture_set_auto_mipmap (CoglPrimitiveTexture *primitive_texture,
|
|
gboolean value);
|
|
|
|
G_END_DECLS
|
|
|
|
#endif /* __COGL_PRIMITIVE_TEXTURE_H__ */
|