mirror of
https://github.com/brl/mutter.git
synced 2024-11-22 16:10:41 -05:00
184 lines
6.9 KiB
C
184 lines
6.9 KiB
C
/*
|
||
* Cogl
|
||
*
|
||
* An object oriented GL/GLES Abstraction/Utility Layer
|
||
*
|
||
* Copyright (C) 2010 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, write to the
|
||
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
||
* Boston, MA 02111-1307, USA.
|
||
*
|
||
* Authors:
|
||
* Neil Roberts <neil@linux.intel.com>
|
||
*/
|
||
|
||
#if !defined(__COGL_H_INSIDE__) && !defined(COGL_COMPILATION)
|
||
#error "Only <cogl/cogl.h> can be included directly."
|
||
#endif
|
||
|
||
#ifndef __COGL_TEXTURE_3D_H
|
||
#define __COGL_TEXTURE_3D_H
|
||
|
||
COGL_BEGIN_DECLS
|
||
|
||
/**
|
||
* SECTION:cogl-texture-3d
|
||
* @short_description: Functions for creating and manipulating 3D textures
|
||
*
|
||
* These functions allow 3D textures to be used. 3D textures can be
|
||
* thought of as layers of 2D images arranged into a cuboid
|
||
* shape. When choosing a texel from the texture, Cogl will take into
|
||
* account the 'r' texture coordinate to select one of the images.
|
||
*/
|
||
|
||
typedef struct _CoglTexture3D CoglTexture3D;
|
||
|
||
#define COGL_TEXTURE_3D(X) ((CoglTexture3D *)X)
|
||
|
||
/**
|
||
* cogl_texture_3d_new_with_size:
|
||
* @context: a #CoglContext
|
||
* @width: width of the texture in pixels.
|
||
* @height: height of the texture in pixels.
|
||
* @depth: depth of the texture in pixels.
|
||
* @internal_format: the #CoglPixelFormat to use for the GPU
|
||
* storage of the texture.
|
||
* @error: A CoglError return location.
|
||
*
|
||
* Creates a new Cogl 3D texture with the specified dimensions and
|
||
* pixel format.
|
||
*
|
||
* Note that this function will throw a #CoglError if
|
||
* %COGL_FEATURE_TEXTURE_3D is not advertised. It can also fail if the
|
||
* requested dimensions are not supported by the GPU.
|
||
*
|
||
* Return value: a new #CoglTexture3D object or
|
||
* %NULL on failure and an exception will be returned
|
||
* in @error.
|
||
* Since: 1.10
|
||
* Stability: Unstable
|
||
*/
|
||
CoglTexture3D *
|
||
cogl_texture_3d_new_with_size (CoglContext *context,
|
||
int width,
|
||
int height,
|
||
int depth,
|
||
CoglPixelFormat internal_format,
|
||
CoglError **error);
|
||
|
||
/**
|
||
* cogl_texture_3d_new_from_data:
|
||
* @context: a #CoglContext
|
||
* @width: width of the texture in pixels.
|
||
* @height: height of the texture in pixels.
|
||
* @depth: depth of the texture in pixels.
|
||
* @format: the #CoglPixelFormat the buffer is stored in in RAM
|
||
* @internal_format: the #CoglPixelFormat that will be used for storing
|
||
* the buffer on the GPU. If %COGL_PIXEL_FORMAT_ANY is given then a
|
||
* premultiplied format similar to the format of the source data will
|
||
* be used. The default blending equations of Cogl expect premultiplied
|
||
* color data; the main use of passing a non-premultiplied format here
|
||
* is if you have non-premultiplied source data and are going to adjust
|
||
* the blend mode (see cogl_pipeline_set_blend()) or use the data for
|
||
* something other than straight blending.
|
||
* @rowstride: the memory offset in bytes between the starts of
|
||
* scanlines in @data or 0 to infer it from the width and format
|
||
* @image_stride: the number of bytes from one image to the next. This
|
||
* can be used to add padding between the images in a similar way
|
||
* that the rowstride can be used to add padding between
|
||
* rows. Alternatively 0 can be passed to infer the @image_stride
|
||
* from the @height.
|
||
* @data: pointer the memory region where the source buffer resides
|
||
* @error: A CoglError return location.
|
||
*
|
||
* Creates a new 3D texture and initializes it with @data. The data is
|
||
* assumed to be packed array of @depth images. There can be padding
|
||
* between the images using @image_stride.
|
||
*
|
||
* Note that this function will throw a #CoglError if
|
||
* %COGL_FEATURE_TEXTURE_3D is not advertised. It can also fail if the
|
||
* requested dimensions are not supported by the GPU.
|
||
*
|
||
* Return value: the newly created #CoglTexture3D or %NULL if
|
||
* there was an error an an exception will be returned
|
||
* through @error.
|
||
* Since: 1.10
|
||
* Stability: Unstable
|
||
*/
|
||
CoglTexture3D *
|
||
cogl_texture_3d_new_from_data (CoglContext *context,
|
||
int width,
|
||
int height,
|
||
int depth,
|
||
CoglPixelFormat format,
|
||
CoglPixelFormat internal_format,
|
||
int rowstride,
|
||
int image_stride,
|
||
const uint8_t *data,
|
||
CoglError **error);
|
||
|
||
/**
|
||
* cogl_texture_3d_new_from_bitmap:
|
||
* @bitmap: A #CoglBitmap object.
|
||
* @height: height of the texture in pixels.
|
||
* @depth: depth of the texture in pixels.
|
||
* @internal_format: the #CoglPixelFormat that will be used for storing
|
||
* the buffer on the GPU. If %COGL_PIXEL_FORMAT_ANY is given then a
|
||
* premultiplied format similar to the format of the source data will
|
||
* be used. The default blending equations of Cogl expect premultiplied
|
||
* color data; the main use of passing a non-premultiplied format here
|
||
* is if you have non-premultiplied source data and are going to adjust
|
||
* the blend mode (see cogl_pipeline_set_blend()) or use the data for
|
||
* something other than straight blending.
|
||
* @error: A CoglError return location.
|
||
*
|
||
* Creates a new 3D texture and initializes it with the images in
|
||
* @bitmap. The images are assumed to be packed together after one
|
||
* another in the increasing y axis. The height of individual image is
|
||
* given as @height and the number of images is given in @depth. The
|
||
* actual height of the bitmap can be larger than @height × @depth. In
|
||
* this case it assumes there is padding between the images.
|
||
*
|
||
* Return value: the newly created texture or %NULL if
|
||
* there was an error.
|
||
* Since: 2.0
|
||
* Stability: unstable
|
||
*/
|
||
CoglTexture3D *
|
||
cogl_texture_3d_new_from_bitmap (CoglBitmap *bitmap,
|
||
unsigned int height,
|
||
unsigned int depth,
|
||
CoglPixelFormat internal_format,
|
||
CoglError **error);
|
||
|
||
/**
|
||
* cogl_is_texture_3d:
|
||
* @object: a #CoglObject
|
||
*
|
||
* Checks whether the given object references a #CoglTexture3D
|
||
*
|
||
* Return value: %TRUE if the passed object represents a 3D texture
|
||
* and %FALSE otherwise
|
||
*
|
||
* Since: 1.4
|
||
* Stability: Unstable
|
||
*/
|
||
CoglBool
|
||
cogl_is_texture_3d (void *object);
|
||
|
||
COGL_END_DECLS
|
||
|
||
#endif /* __COGL_TEXTURE_3D_H */
|