mirror of
https://github.com/brl/mutter.git
synced 2024-11-26 18:11:05 -05:00
82e80e6765
This adds a _cogl_bind_gl_texture_transient function that should be used instead of glBindTexture so we can have a consistent cache of the textures bound to each texture unit so we can avoid some redundant binding.
238 lines
8.7 KiB
C
238 lines
8.7 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_PRIVATE_H
|
|
#define __COGL_TEXTURE_PRIVATE_H
|
|
|
|
#include "cogl-bitmap-private.h"
|
|
#include "cogl-handle.h"
|
|
#include "cogl-material-private.h"
|
|
|
|
#define COGL_TEXTURE(tex) ((CoglTexture *)(tex))
|
|
|
|
typedef struct _CoglTexture CoglTexture;
|
|
typedef struct _CoglTextureVtable CoglTextureVtable;
|
|
|
|
typedef void (*CoglTextureSliceCallback) (CoglHandle handle,
|
|
GLuint gl_handle,
|
|
GLenum gl_target,
|
|
const float *slice_coords,
|
|
const float *virtual_coords,
|
|
void *user_data);
|
|
|
|
typedef void (* CoglTextureManualRepeatCallback) (const float *coords,
|
|
void *user_data);
|
|
|
|
/* Encodes three possibiloities result of transforming a quad */
|
|
typedef enum {
|
|
/* quad doesn't cross the boundaries of a texture */
|
|
COGL_TRANSFORM_NO_REPEAT,
|
|
/* quad crosses boundaries, hardware wrap mode can handle */
|
|
COGL_TRANSFORM_HARDWARE_REPEAT,
|
|
/* quad crosses boundaries, needs software fallback;
|
|
* for a sliced texture, this might not actually involve
|
|
* repeating, just a quad crossing multiple slices */
|
|
COGL_TRANSFORM_SOFTWARE_REPEAT,
|
|
} CoglTransformResult;
|
|
|
|
struct _CoglTextureVtable
|
|
{
|
|
/* Virtual functions that must be implemented for a texture
|
|
backend */
|
|
|
|
gboolean (* set_region) (CoglTexture *tex,
|
|
int src_x,
|
|
int src_y,
|
|
int dst_x,
|
|
int dst_y,
|
|
unsigned int dst_width,
|
|
unsigned int dst_height,
|
|
int width,
|
|
int height,
|
|
CoglPixelFormat format,
|
|
unsigned int rowstride,
|
|
const guint8 *data);
|
|
|
|
int (* get_data) (CoglTexture *tex,
|
|
CoglPixelFormat format,
|
|
unsigned int rowstride,
|
|
guint8 *data);
|
|
|
|
void (* foreach_sub_texture_in_region) (CoglTexture *tex,
|
|
float virtual_tx_1,
|
|
float virtual_ty_1,
|
|
float virtual_tx_2,
|
|
float virtual_ty_2,
|
|
CoglTextureSliceCallback callback,
|
|
void *user_data);
|
|
|
|
int (* get_max_waste) (CoglTexture *tex);
|
|
|
|
gboolean (* is_sliced) (CoglTexture *tex);
|
|
|
|
gboolean (* can_hardware_repeat) (CoglTexture *tex);
|
|
|
|
void (* transform_coords_to_gl) (CoglTexture *tex,
|
|
float *s,
|
|
float *t);
|
|
CoglTransformResult (* transform_quad_coords_to_gl) (CoglTexture *tex,
|
|
float *coords);
|
|
|
|
gboolean (* get_gl_texture) (CoglTexture *tex,
|
|
GLuint *out_gl_handle,
|
|
GLenum *out_gl_target);
|
|
|
|
void (* set_filters) (CoglTexture *tex,
|
|
GLenum min_filter,
|
|
GLenum mag_filter);
|
|
|
|
void (* ensure_mipmaps) (CoglTexture *tex);
|
|
void (* ensure_non_quad_rendering) (CoglTexture *tex);
|
|
|
|
void (* set_wrap_mode_parameters) (CoglTexture *tex,
|
|
GLenum wrap_mode_s,
|
|
GLenum wrap_mode_t,
|
|
GLenum wrap_mode_r);
|
|
|
|
CoglPixelFormat (* get_format) (CoglTexture *tex);
|
|
GLenum (* get_gl_format) (CoglTexture *tex);
|
|
int (* get_width) (CoglTexture *tex);
|
|
int (* get_height) (CoglTexture *tex);
|
|
|
|
gboolean (* is_foreign) (CoglTexture *tex);
|
|
};
|
|
|
|
struct _CoglTexture
|
|
{
|
|
CoglHandleObject _parent;
|
|
const CoglTextureVtable *vtable;
|
|
};
|
|
|
|
typedef enum _CoglTextureChangeFlags
|
|
{
|
|
/* Whenever the internals of a texture are changed such that the
|
|
* underlying GL textures that represent the CoglTexture change then
|
|
* we notify cogl-material.c via
|
|
* _cogl_material_texture_pre_change_notify
|
|
*/
|
|
COGL_TEXTURE_CHANGE_GL_TEXTURES
|
|
|
|
} CoglTextureChangeFlags;
|
|
|
|
void
|
|
_cogl_texture_free (CoglTexture *texture);
|
|
|
|
void
|
|
_cogl_texture_foreach_sub_texture_in_region (CoglHandle handle,
|
|
float virtual_tx_1,
|
|
float virtual_ty_1,
|
|
float virtual_tx_2,
|
|
float virtual_ty_2,
|
|
CoglTextureSliceCallback callback,
|
|
void *user_data);
|
|
|
|
gboolean
|
|
_cogl_texture_can_hardware_repeat (CoglHandle handle);
|
|
|
|
void
|
|
_cogl_texture_transform_coords_to_gl (CoglHandle handle,
|
|
float *s,
|
|
float *t);
|
|
CoglTransformResult
|
|
_cogl_texture_transform_quad_coords_to_gl (CoglHandle handle,
|
|
float *coords);
|
|
|
|
GLenum
|
|
_cogl_texture_get_gl_format (CoglHandle handle);
|
|
|
|
void
|
|
_cogl_texture_set_wrap_mode_parameters (CoglHandle handle,
|
|
GLenum wrap_mode_s,
|
|
GLenum wrap_mode_t,
|
|
GLenum wrap_mode_r);
|
|
|
|
|
|
void
|
|
_cogl_texture_set_filters (CoglHandle handle,
|
|
GLenum min_filter,
|
|
GLenum mag_filter);
|
|
|
|
void
|
|
_cogl_texture_ensure_mipmaps (CoglHandle handle);
|
|
|
|
void
|
|
_cogl_texture_ensure_non_quad_rendering (CoglHandle handle);
|
|
|
|
/* Utility function to determine which pixel format to use when
|
|
dst_format is COGL_PIXEL_FORMAT_ANY. If dst_format is not ANY then
|
|
it will just be returned directly */
|
|
CoglPixelFormat
|
|
_cogl_texture_determine_internal_format (CoglPixelFormat src_format,
|
|
CoglPixelFormat dst_format);
|
|
|
|
/* Utility function to help uploading a bitmap. If the bitmap needs
|
|
premult conversion then it will be copied and *copied_bitmap will
|
|
be set to TRUE. Otherwise dst_bmp will be set to a shallow copy of
|
|
src_bmp. The GLenums needed for uploading are returned */
|
|
|
|
gboolean
|
|
_cogl_texture_prepare_for_upload (CoglBitmap *src_bmp,
|
|
CoglPixelFormat dst_format,
|
|
CoglPixelFormat *dst_format_out,
|
|
CoglBitmap *dst_bmp,
|
|
gboolean *copied_bitmap,
|
|
GLenum *out_glintformat,
|
|
GLenum *out_glformat,
|
|
GLenum *out_gltype);
|
|
|
|
void
|
|
_cogl_texture_prep_gl_alignment_for_pixels_upload (int pixels_rowstride);
|
|
|
|
void
|
|
_cogl_texture_prep_gl_alignment_for_pixels_download (int pixels_rowstride);
|
|
|
|
/* Utility function for implementing manual repeating. Even texture
|
|
backends that always support hardware repeating need this because
|
|
when foreach_sub_texture_in_region is invoked Cogl will set the
|
|
wrap mode to GL_CLAMP_TO_EDGE so hardware repeating can't be
|
|
done */
|
|
void
|
|
_cogl_texture_iterate_manual_repeats (CoglTextureManualRepeatCallback callback,
|
|
float tx_1, float ty_1,
|
|
float tx_2, float ty_2,
|
|
void *user_data);
|
|
|
|
/* Utility function to use as a fallback for getting the data of any
|
|
texture via the framebuffer */
|
|
|
|
gboolean
|
|
_cogl_texture_draw_and_read (CoglHandle handle,
|
|
CoglBitmap *target_bmp,
|
|
GLuint target_gl_format,
|
|
GLuint target_gl_type);
|
|
|
|
gboolean
|
|
_cogl_texture_is_foreign (CoglHandle handle);
|
|
|
|
#endif /* __COGL_TEXTURE_PRIVATE_H */
|