7011eb5db4
cogl_texture_set_region() and cogl_texture_set_region_from_bitmap() now have a level argument so image data can be uploaded to a specific mipmap level. The prototype for cogl_texture_set_region was also updated to simplify the arguments. The arguments for cogl_texture_set_region_from_bitmap were reordered to be consistent with cogl_texture_set_region with the source related arguments listed first followed by the destination arguments. Reviewed-by: Neil Roberts <neil@linux.intel.com> (cherry picked from commit 3a336a8adcd406b53731a6de0e7d97ba7932c1a8) Note: Public API changes were reverted in cherry-picking this patch
199 lines
7.2 KiB
C
199 lines
7.2 KiB
C
/*
|
|
* Cogl
|
|
*
|
|
* An object oriented GL/GLES Abstraction/Utility Layer
|
|
*
|
|
* Copyright (C) 2007,2008,2009 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/>.
|
|
*
|
|
*
|
|
*/
|
|
|
|
#ifndef __COGL_TEXTURE_DRIVER_H
|
|
#define __COGL_TEXTURE_DRIVER_H
|
|
|
|
typedef struct _CoglTextureDriver CoglTextureDriver;
|
|
|
|
struct _CoglTextureDriver
|
|
{
|
|
/*
|
|
* A very small wrapper around glGenTextures() that ensures we default to
|
|
* non-mipmap filters when creating textures. This is to save some memory as
|
|
* the driver will not allocate room for the mipmap tree.
|
|
*/
|
|
GLuint
|
|
(* gen) (CoglContext *ctx,
|
|
GLenum gl_target,
|
|
CoglPixelFormat internal_format);
|
|
|
|
/*
|
|
* This sets up the glPixelStore state for an upload to a destination with
|
|
* the same size, and with no offset.
|
|
*/
|
|
/* NB: GLES can't upload a sub region of pixel data from a larger source
|
|
* buffer which is why this interface is limited. The GL driver has a more
|
|
* flexible version of this function that is uses internally */
|
|
void
|
|
(* prep_gl_for_pixels_upload) (CoglContext *ctx,
|
|
int pixels_rowstride,
|
|
int pixels_bpp);
|
|
|
|
/*
|
|
* This uploads a sub-region from source_bmp to a single GL texture
|
|
* handle (i.e a single CoglTexture slice)
|
|
*
|
|
* It also updates the array of tex->first_pixels[slice_index] if
|
|
* dst_{x,y} == 0
|
|
*
|
|
* The driver abstraction is in place because GLES doesn't support the pixel
|
|
* store options required to source from a subregion, so for GLES we have
|
|
* to manually create a transient source bitmap.
|
|
*
|
|
* XXX: sorry for the ridiculous number of arguments :-(
|
|
*/
|
|
CoglBool
|
|
(* upload_subregion_to_gl) (CoglContext *ctx,
|
|
CoglTexture *texture,
|
|
CoglBool is_foreign,
|
|
int src_x,
|
|
int src_y,
|
|
int dst_x,
|
|
int dst_y,
|
|
int width,
|
|
int height,
|
|
int level,
|
|
CoglBitmap *source_bmp,
|
|
GLuint source_gl_format,
|
|
GLuint source_gl_type,
|
|
CoglError **error);
|
|
|
|
/*
|
|
* Replaces the contents of the GL texture with the entire bitmap. On
|
|
* GL this just directly calls glTexImage2D, but under GLES it needs
|
|
* to copy the bitmap if the rowstride is not a multiple of a possible
|
|
* alignment value because there is no GL_UNPACK_ROW_LENGTH
|
|
*/
|
|
CoglBool
|
|
(* upload_to_gl) (CoglContext *ctx,
|
|
GLenum gl_target,
|
|
GLuint gl_handle,
|
|
CoglBool is_foreign,
|
|
CoglBitmap *source_bmp,
|
|
GLint internal_gl_format,
|
|
GLuint source_gl_format,
|
|
GLuint source_gl_type,
|
|
CoglError **error);
|
|
|
|
/*
|
|
* Replaces the contents of the GL texture with the entire bitmap. The
|
|
* width of the texture is inferred from the bitmap. The height and
|
|
* depth of the texture is given directly. The 'image_height' (which
|
|
* is the number of rows between images) is inferred by dividing the
|
|
* height of the bitmap by the depth.
|
|
*/
|
|
CoglBool
|
|
(* upload_to_gl_3d) (CoglContext *ctx,
|
|
GLenum gl_target,
|
|
GLuint gl_handle,
|
|
CoglBool is_foreign,
|
|
GLint height,
|
|
GLint depth,
|
|
CoglBitmap *source_bmp,
|
|
GLint internal_gl_format,
|
|
GLuint source_gl_format,
|
|
GLuint source_gl_type,
|
|
CoglError **error);
|
|
|
|
/*
|
|
* This sets up the glPixelStore state for an download to a destination with
|
|
* the same size, and with no offset.
|
|
*/
|
|
/* NB: GLES can't download pixel data into a sub region of a larger
|
|
* destination buffer, the GL driver has a more flexible version of
|
|
* this function that it uses internally. */
|
|
void
|
|
(* prep_gl_for_pixels_download) (CoglContext *ctx,
|
|
int image_width,
|
|
int pixels_rowstride,
|
|
int pixels_bpp);
|
|
|
|
/*
|
|
* This driver abstraction is needed because GLES doesn't support
|
|
* glGetTexImage (). On GLES this currently just returns FALSE which
|
|
* will lead to a generic fallback path being used that simply
|
|
* renders the texture and reads it back from the framebuffer. (See
|
|
* _cogl_texture_draw_and_read () )
|
|
*/
|
|
CoglBool
|
|
(* gl_get_tex_image) (CoglContext *ctx,
|
|
GLenum gl_target,
|
|
GLenum dest_gl_format,
|
|
GLenum dest_gl_type,
|
|
uint8_t *dest);
|
|
|
|
/*
|
|
* It may depend on the driver as to what texture sizes are supported...
|
|
*/
|
|
CoglBool
|
|
(* size_supported) (CoglContext *ctx,
|
|
GLenum gl_target,
|
|
GLenum gl_intformat,
|
|
GLenum gl_format,
|
|
GLenum gl_type,
|
|
int width,
|
|
int height);
|
|
|
|
CoglBool
|
|
(* size_supported_3d) (CoglContext *ctx,
|
|
GLenum gl_target,
|
|
GLenum gl_format,
|
|
GLenum gl_type,
|
|
int width,
|
|
int height,
|
|
int depth);
|
|
|
|
/*
|
|
* This driver abstraction is needed because GLES doesn't support setting
|
|
* a texture border color.
|
|
*/
|
|
void
|
|
(* try_setting_gl_border_color) (CoglContext *ctx,
|
|
GLuint gl_target,
|
|
const GLfloat *transparent_color);
|
|
|
|
/*
|
|
* It may depend on the driver as to what texture targets may be used when
|
|
* creating a foreign texture. E.g. OpenGL supports ARB_texture_rectangle
|
|
* but GLES doesn't
|
|
*/
|
|
CoglBool
|
|
(* allows_foreign_gl_target) (CoglContext *ctx,
|
|
GLenum gl_target);
|
|
|
|
/*
|
|
* The driver may impose constraints on what formats can be used to store
|
|
* texture data read from textures. For example GLES currently only supports
|
|
* RGBA_8888, and so we need to manually convert the data if the final
|
|
* destination has another format.
|
|
*/
|
|
CoglPixelFormat
|
|
(* find_best_gl_get_data_format) (CoglContext *context,
|
|
CoglPixelFormat format,
|
|
GLenum *closest_gl_format,
|
|
GLenum *closest_gl_type);
|
|
};
|
|
|
|
#endif /* __COGL_TEXTURE_DRIVER_H */
|
|
|