mutter/cogl/cogl-primitive-texture.h

/*
 * 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__ */