890a75ab06
Because the wayland-client-protocol.h header defines symbols that collide with the wayland-server-protocol.h header we allow applications to explicitly ensure that they are only including one at a time by exposing corresponding <cogl/cogl-wayland-client.h> and <cogl/cogl-wayland-server.h> headers. This also adds a missing guard to cogl-texture-2d.h that it isn't included directly. Reviewed-by: Neil Roberts <neil@linux.intel.com>
191 lines
7.0 KiB
C
191 lines
7.0 KiB
C
/*
|
|
* Cogl
|
|
*
|
|
* An object oriented GL/GLES Abstraction/Utility Layer
|
|
*
|
|
* Copyright (C) 2011 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/>.
|
|
*
|
|
*
|
|
* Authors:
|
|
* Robert Bragg <robert@linux.intel.com>
|
|
*/
|
|
|
|
#if !defined(__COGL_H_INSIDE__) && !defined(CLUTTER_COMPILATION)
|
|
#error "Only <cogl/cogl.h> can be included directly."
|
|
#endif
|
|
|
|
#ifndef __COGL_TEXURE_2D_H
|
|
#define __COGL_TEXURE_2D_H
|
|
|
|
#include "cogl-context.h"
|
|
|
|
#include <glib.h>
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
/**
|
|
* SECTION:cogl-texture-2d
|
|
* @short_description: Functions for creating and manipulating 2D textures
|
|
*
|
|
* These functions allow low-level 2D textures to be allocated. These
|
|
* differ from sliced textures for example which may internally be
|
|
* made up of multiple 2D textures, or atlas textures where Cogl must
|
|
* internally modify user texture coordinates before they can be used
|
|
* by the GPU.
|
|
*
|
|
* You should be aware that many GPUs only support power of two sizes
|
|
* for #CoglTexture2D textures. You can check support for non power of
|
|
* two textures by checking for the %COGL_FEATURE_ID_TEXTURE_NPOT feature
|
|
* via cogl_has_feature().
|
|
*/
|
|
|
|
typedef struct _CoglTexture2D CoglTexture2D;
|
|
#define COGL_TEXTURE_2D(X) ((CoglTexture2D *)X)
|
|
|
|
#define cogl_is_texture_2d cogl_is_texture_2d_EXP
|
|
/**
|
|
* cogl_is_texture_2d:
|
|
* @object: A #CoglObject
|
|
*
|
|
* Gets whether the given object references an existing #CoglTexture2D
|
|
* object.
|
|
*
|
|
* Return value: %TRUE if the object references a #CoglTexture2D,
|
|
* %FALSE otherwise
|
|
*/
|
|
gboolean
|
|
cogl_is_texture_2d (void *object);
|
|
|
|
#define cogl_texture_2d_new_with_size cogl_texture_2d_new_with_size_EXP
|
|
/**
|
|
* cogl_texture_2d_new_with_size:
|
|
* @ctx: A #CoglContext
|
|
* @width: Width of the texture to allocate
|
|
* @height: Height of the texture to allocate
|
|
* @internal_format: The format of the texture
|
|
* @error: A #GError for exceptions
|
|
*
|
|
* Allocates a low-level #CoglTexture2D texture that your GPU can
|
|
* texture from directly. This is unlike sliced textures for example
|
|
* which may be comprised of multiple internal textures, or atlas
|
|
* textures where Cogl has to modify texture coordinates before they
|
|
* may be used by the GPU.
|
|
*
|
|
* <note>Many GPUs only support power of two sizes for #CoglTexture2D
|
|
* textures. You can check support for non power of two textures by
|
|
* checking for the %COGL_FEATURE_ID_TEXTURE_NPOT feature via
|
|
* cogl_has_feature().</note>
|
|
*
|
|
* Returns: A newly allocated #CoglTexture2D, or if the size is not
|
|
* supported (because it is too large or a non-power-of-two
|
|
* size that the hardware doesn't support) it will return
|
|
* %NULL and set @error.
|
|
*
|
|
* Since: 2.0
|
|
*/
|
|
CoglTexture2D *
|
|
cogl_texture_2d_new_with_size (CoglContext *ctx,
|
|
int width,
|
|
int height,
|
|
CoglPixelFormat internal_format,
|
|
GError **error);
|
|
|
|
#define cogl_texture_2d_new_from_data cogl_texture_2d_new_from_data_EXP
|
|
/**
|
|
* cogl_texture_2d_new_from_data:
|
|
* @ctx: A #CoglContext
|
|
* @width: width of texture in pixels
|
|
* @height: height of 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_material_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. A value of 0 will make Cogl automatically
|
|
* calculate @rowstride from @width and @format.
|
|
* @data: pointer the memory region where the source buffer resides
|
|
* @error: A #GError for exceptions
|
|
*
|
|
* Creates a new #CoglTexture2D texture based on data residing in memory.
|
|
* These are unlike sliced textures for example which may be comprised
|
|
* of multiple internal textures, or atlas textures where Cogl has to
|
|
* modify texture coordinates before they may be used by the GPU.
|
|
*
|
|
* <note>Many GPUs only support power of two sizes for #CoglTexture2D
|
|
* textures. You can check support for non power of two textures by
|
|
* checking for the %COGL_FEATURE_ID_TEXTURE_NPOT feature via
|
|
* cogl_has_feature().</note>
|
|
*
|
|
* Returns: A newly allocated #CoglTexture2D, or if the size is not
|
|
* supported (because it is too large or a non-power-of-two
|
|
* size that the hardware doesn't support) it will return
|
|
* %NULL and set @error.
|
|
*
|
|
* Since: 2.0
|
|
*/
|
|
CoglTexture2D *
|
|
cogl_texture_2d_new_from_data (CoglContext *ctx,
|
|
int width,
|
|
int height,
|
|
CoglPixelFormat format,
|
|
CoglPixelFormat internal_format,
|
|
int rowstride,
|
|
const guint8 *data,
|
|
GError **error);
|
|
|
|
#define cogl_texture_2d_new_from_foreign cogl_texture_2d_new_from_foreign_EXP
|
|
/**
|
|
* cogl_texture_2d_new_from_foreign:
|
|
* @ctx: A #CoglContext
|
|
* @gl_handle: A GL handle for a GL_TEXTURE_2D texture object
|
|
* @width: Width of the foreign GL texture
|
|
* @height: Height of the foreign GL texture
|
|
* @internal_format: The format of the texture
|
|
* @error: A #GError for exceptions
|
|
*
|
|
* Wraps an existing GL_TEXTURE_2D texture object as a #CoglTexture2D.
|
|
* This can be used for integrating Cogl with software using OpenGL
|
|
* directly.
|
|
*
|
|
* <note>The results are undefined for passing an invalid @gl_handle
|
|
* or if @width or @height don't have the correct texture
|
|
* geometry.</note>
|
|
*
|
|
* Returns: A newly allocated #CoglTexture2D, or if Cogl could not
|
|
* validate the @gl_handle in some way (perhaps because of
|
|
* an unsupported format) it will return %NULL and set
|
|
* @error.
|
|
*
|
|
* Since: 2.0
|
|
*/
|
|
CoglTexture2D *
|
|
cogl_texture_2d_new_from_foreign (CoglContext *ctx,
|
|
unsigned int gl_handle,
|
|
int width,
|
|
int height,
|
|
CoglPixelFormat format,
|
|
GError **error);
|
|
|
|
G_END_DECLS
|
|
|
|
#endif /* __COGL_TEXURE_2D_H */
|