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mutter/cogl/cogl-texture-rectangle.c
Robert Bragg a77dc1319c texture-rectangle: update _new_with_size in line with master 
This updates the cogl_texture_rectangle_new_with_size() api in line with
master to be consistent with other texture constructors. This removes
the internal_format and error arguments and allows the texture to be
allocated lazily which means the texture can be configured with apis
like cogl_texture_set_components() and cogl_texture_set_premultiplied()
before it is allocated.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
2014-01-13 17:35:05 +00:00

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/*
* 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, see <http://www.gnu.org/licenses/>.
*
*
*
* Authors:
* Neil Roberts <neil@linux.intel.com>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "cogl-private.h"
#include "cogl-util.h"
#include "cogl-texture-private.h"
#include "cogl-texture-rectangle-private.h"
#include "cogl-texture-driver.h"
#include "cogl-context-private.h"
#include "cogl-object-private.h"
#include "cogl-journal-private.h"
#include "cogl-pipeline-opengl-private.h"
#include "cogl-error-private.h"
#include "cogl-util-gl-private.h"
#include <string.h>
#include <math.h>
/* These aren't defined under GLES */
#ifndef GL_TEXTURE_RECTANGLE_ARB
#define GL_TEXTURE_RECTANGLE_ARB 0x84F5
#endif
#ifndef GL_CLAMP
#define GL_CLAMP 0x2900
#endif
#ifndef GL_CLAMP_TO_BORDER
#define GL_CLAMP_TO_BORDER 0x812D
#endif
static void _cogl_texture_rectangle_free (CoglTextureRectangle *tex_rect);
COGL_TEXTURE_DEFINE (TextureRectangle, texture_rectangle);
static const CoglTextureVtable cogl_texture_rectangle_vtable;
static CoglBool
can_use_wrap_mode (GLenum wrap_mode)
{
return (wrap_mode == GL_CLAMP ||
wrap_mode == GL_CLAMP_TO_EDGE ||
wrap_mode == GL_CLAMP_TO_BORDER);
}
static void
_cogl_texture_rectangle_gl_flush_legacy_texobj_wrap_modes (CoglTexture *tex,
GLenum wrap_mode_s,
GLenum wrap_mode_t,
GLenum wrap_mode_p)
{
CoglTextureRectangle *tex_rect = COGL_TEXTURE_RECTANGLE (tex);
CoglContext *ctx = tex->context;
/* Only set the wrap mode if it's different from the current value
to avoid too many GL calls. Texture rectangle doesn't make use of
the r coordinate so we can ignore its wrap mode */
if (tex_rect->gl_legacy_texobj_wrap_mode_s != wrap_mode_s ||
tex_rect->gl_legacy_texobj_wrap_mode_t != wrap_mode_t)
{
g_assert (can_use_wrap_mode (wrap_mode_s));
g_assert (can_use_wrap_mode (wrap_mode_t));
_cogl_bind_gl_texture_transient (GL_TEXTURE_RECTANGLE_ARB,
tex_rect->gl_texture,
tex_rect->is_foreign);
GE( ctx, glTexParameteri (GL_TEXTURE_RECTANGLE_ARB,
GL_TEXTURE_WRAP_S, wrap_mode_s) );
GE( ctx, glTexParameteri (GL_TEXTURE_RECTANGLE_ARB,
GL_TEXTURE_WRAP_T, wrap_mode_t) );
tex_rect->gl_legacy_texobj_wrap_mode_s = wrap_mode_s;
tex_rect->gl_legacy_texobj_wrap_mode_t = wrap_mode_t;
}
}
static void
_cogl_texture_rectangle_free (CoglTextureRectangle *tex_rect)
{
if (!tex_rect->is_foreign && tex_rect->gl_texture)
_cogl_delete_gl_texture (tex_rect->gl_texture);
/* Chain up */
_cogl_texture_free (COGL_TEXTURE (tex_rect));
}
static CoglBool
_cogl_texture_rectangle_can_create (CoglContext *ctx,
unsigned int width,
unsigned int height,
CoglPixelFormat internal_format,
CoglError **error)
{
GLenum gl_intformat;
GLenum gl_format;
GLenum gl_type;
if (!cogl_has_feature (ctx, COGL_FEATURE_ID_TEXTURE_RECTANGLE))
{
_cogl_set_error (error,
COGL_TEXTURE_ERROR,
COGL_TEXTURE_ERROR_TYPE,
"The CoglTextureRectangle feature isn't available");
return FALSE;
}
ctx->driver_vtable->pixel_format_to_gl (ctx,
internal_format,
&gl_intformat,
&gl_format,
&gl_type);
/* Check that the driver can create a texture with that size */
if (!ctx->texture_driver->size_supported (ctx,
GL_TEXTURE_RECTANGLE_ARB,
gl_intformat,
gl_format,
gl_type,
width,
height))
{
_cogl_set_error (error,
COGL_TEXTURE_ERROR,
COGL_TEXTURE_ERROR_SIZE,
"The requested texture size + format is unsupported");
return FALSE;
}
return TRUE;
}
static void
_cogl_texture_rectangle_set_auto_mipmap (CoglTexture *tex,
CoglBool value)
{
/* Rectangle textures currently never support mipmapping so there's
no point in doing anything here */
}
static CoglTextureRectangle *
_cogl_texture_rectangle_create_base (CoglContext *ctx,
int width,
int height,
CoglPixelFormat internal_format,
CoglTextureLoader *loader)
{
CoglTextureRectangle *tex_rect = g_new (CoglTextureRectangle, 1);
CoglTexture *tex = COGL_TEXTURE (tex_rect);
_cogl_texture_init (tex, ctx, width, height,
internal_format, loader,
&cogl_texture_rectangle_vtable);
tex_rect->gl_texture = 0;
tex_rect->is_foreign = FALSE;
/* We default to GL_LINEAR for both filters */
tex_rect->gl_legacy_texobj_min_filter = GL_LINEAR;
tex_rect->gl_legacy_texobj_mag_filter = GL_LINEAR;
/* Wrap mode not yet set */
tex_rect->gl_legacy_texobj_wrap_mode_s = GL_FALSE;
tex_rect->gl_legacy_texobj_wrap_mode_t = GL_FALSE;
return _cogl_texture_rectangle_object_new (tex_rect);
}
CoglTextureRectangle *
cogl_texture_rectangle_new_with_size (CoglContext *ctx,
int width,
int height)
{
CoglTextureLoader *loader = _cogl_texture_create_loader ();
loader->src_type = COGL_TEXTURE_SOURCE_TYPE_SIZED;
loader->src.sized.width = width;
loader->src.sized.height = height;
return _cogl_texture_rectangle_create_base (ctx, width, height,
COGL_PIXEL_FORMAT_RGBA_8888_PRE,
loader);
}
static CoglBool
allocate_with_size (CoglTextureRectangle *tex_rect,
CoglTextureLoader *loader,
CoglError **error)
{
CoglTexture *tex = COGL_TEXTURE (tex_rect);
CoglContext *ctx = tex->context;
CoglPixelFormat internal_format;
int width = loader->src.sized.width;
int height = loader->src.sized.height;
GLenum gl_intformat;
GLenum gl_format;
GLenum gl_type;
GLenum gl_error;
GLenum gl_texture;
internal_format =
_cogl_texture_determine_internal_format (tex, COGL_PIXEL_FORMAT_ANY);
if (!_cogl_texture_rectangle_can_create (ctx,
width,
height,
internal_format,
error))
return FALSE;
ctx->driver_vtable->pixel_format_to_gl (ctx,
internal_format,
&gl_intformat,
&gl_format,
&gl_type);
gl_texture =
ctx->texture_driver->gen (ctx,
GL_TEXTURE_RECTANGLE_ARB,
internal_format);
_cogl_bind_gl_texture_transient (GL_TEXTURE_RECTANGLE_ARB,
gl_texture,
tex_rect->is_foreign);
/* Clear any GL errors */
while ((gl_error = ctx->glGetError ()) != GL_NO_ERROR)
;
ctx->glTexImage2D (GL_TEXTURE_RECTANGLE_ARB, 0, gl_intformat,
width, height, 0, gl_format, gl_type, NULL);
if (_cogl_gl_util_catch_out_of_memory (ctx, error))
{
GE( ctx, glDeleteTextures (1, &gl_texture) );
return FALSE;
}
tex_rect->internal_format = internal_format;
tex_rect->gl_texture = gl_texture;
tex_rect->gl_format = gl_intformat;
_cogl_texture_set_allocated (COGL_TEXTURE (tex_rect),
internal_format, width, height);
return TRUE;
}
static CoglBool
allocate_from_bitmap (CoglTextureRectangle *tex_rect,
CoglTextureLoader *loader,
CoglError **error)
{
CoglTexture *tex = COGL_TEXTURE (tex_rect);
CoglContext *ctx = tex->context;
CoglPixelFormat internal_format;
CoglBitmap *bmp = loader->src.bitmap.bitmap;
int width = cogl_bitmap_get_width (bmp);
int height = cogl_bitmap_get_height (bmp);
CoglBool can_convert_in_place = loader->src.bitmap.can_convert_in_place;
CoglBitmap *upload_bmp;
GLenum gl_intformat;
GLenum gl_format;
GLenum gl_type;
internal_format =
_cogl_texture_determine_internal_format (tex, cogl_bitmap_get_format (bmp));
if (!_cogl_texture_rectangle_can_create (ctx,
width,
height,
internal_format,
error))
return FALSE;
upload_bmp = _cogl_bitmap_convert_for_upload (bmp,
internal_format,
can_convert_in_place,
error);
if (upload_bmp == NULL)
return FALSE;
ctx->driver_vtable->pixel_format_to_gl (ctx,
cogl_bitmap_get_format (upload_bmp),
NULL, /* internal format */
&gl_format,
&gl_type);
ctx->driver_vtable->pixel_format_to_gl (ctx,
internal_format,
&gl_intformat,
NULL,
NULL);
tex_rect->gl_texture =
ctx->texture_driver->gen (ctx,
GL_TEXTURE_RECTANGLE_ARB,
internal_format);
if (!ctx->texture_driver->upload_to_gl (ctx,
GL_TEXTURE_RECTANGLE_ARB,
tex_rect->gl_texture,
FALSE,
upload_bmp,
gl_intformat,
gl_format,
gl_type,
error))
{
cogl_object_unref (upload_bmp);
return FALSE;
}
tex_rect->gl_format = gl_intformat;
tex_rect->internal_format = internal_format;
cogl_object_unref (upload_bmp);
_cogl_texture_set_allocated (COGL_TEXTURE (tex_rect),
internal_format, width, height);
return TRUE;
}
static CoglBool
allocate_from_gl_foreign (CoglTextureRectangle *tex_rect,
CoglTextureLoader *loader,
CoglError **error)
{
CoglTexture *tex = COGL_TEXTURE (tex_rect);
CoglContext *ctx = tex->context;
CoglPixelFormat format = loader->src.gl_foreign.format;
GLenum gl_error = 0;
GLint gl_compressed = GL_FALSE;
GLenum gl_int_format = 0;
if (!ctx->texture_driver->allows_foreign_gl_target (ctx,
GL_TEXTURE_RECTANGLE_ARB))
{
_cogl_set_error (error,
COGL_SYSTEM_ERROR,
COGL_SYSTEM_ERROR_UNSUPPORTED,
"Foreign GL_TEXTURE_RECTANGLE textures are not "
"supported by your system");
return FALSE;
}
/* Make sure binding succeeds */
while ((gl_error = ctx->glGetError ()) != GL_NO_ERROR)
;
_cogl_bind_gl_texture_transient (GL_TEXTURE_RECTANGLE_ARB,
loader->src.gl_foreign.gl_handle, TRUE);
if (ctx->glGetError () != GL_NO_ERROR)
{
_cogl_set_error (error,
COGL_SYSTEM_ERROR,
COGL_SYSTEM_ERROR_UNSUPPORTED,
"Failed to bind foreign GL_TEXTURE_RECTANGLE texture");
return FALSE;
}
/* Obtain texture parameters */
#ifdef HAVE_COGL_GL
if (_cogl_has_private_feature
(ctx, COGL_PRIVATE_FEATURE_QUERY_TEXTURE_PARAMETERS))
{
GLint val;
GE( ctx, glGetTexLevelParameteriv (GL_TEXTURE_RECTANGLE_ARB, 0,
GL_TEXTURE_COMPRESSED,
&gl_compressed) );
GE( ctx, glGetTexLevelParameteriv (GL_TEXTURE_RECTANGLE_ARB, 0,
GL_TEXTURE_INTERNAL_FORMAT,
&val) );
gl_int_format = val;
/* If we can query GL for the actual pixel format then we'll ignore
the passed in format and use that. */
if (!ctx->driver_vtable->pixel_format_from_gl_internal (ctx,
gl_int_format,
&format))
{
_cogl_set_error (error,
COGL_SYSTEM_ERROR,
COGL_SYSTEM_ERROR_UNSUPPORTED,
"Unsupported internal format for foreign texture");
return FALSE;
}
}
else
#endif
{
/* Otherwise we'll assume we can derive the GL format from the
passed in format */
ctx->driver_vtable->pixel_format_to_gl (ctx,
format,
&gl_int_format,
NULL,
NULL);
}
/* Compressed texture images not supported */
if (gl_compressed == GL_TRUE)
{
_cogl_set_error (error,
COGL_SYSTEM_ERROR,
COGL_SYSTEM_ERROR_UNSUPPORTED,
"Compressed foreign textures aren't currently supported");
return FALSE;
}
/* Setup bitmap info */
tex_rect->is_foreign = TRUE;
tex_rect->gl_texture = loader->src.gl_foreign.gl_handle;
tex_rect->gl_format = gl_int_format;
/* Unknown filter */
tex_rect->gl_legacy_texobj_min_filter = GL_FALSE;
tex_rect->gl_legacy_texobj_mag_filter = GL_FALSE;
tex_rect->internal_format = format;
_cogl_texture_set_allocated (COGL_TEXTURE (tex_rect),
format,
loader->src.gl_foreign.width,
loader->src.gl_foreign.height);
return TRUE;
}
static CoglBool
_cogl_texture_rectangle_allocate (CoglTexture *tex,
CoglError **error)
{
CoglTextureRectangle *tex_rect = COGL_TEXTURE_RECTANGLE (tex);
CoglTextureLoader *loader = tex->loader;
_COGL_RETURN_VAL_IF_FAIL (loader, FALSE);
switch (loader->src_type)
{
case COGL_TEXTURE_SOURCE_TYPE_SIZED:
return allocate_with_size (tex_rect, loader, error);
case COGL_TEXTURE_SOURCE_TYPE_BITMAP:
return allocate_from_bitmap (tex_rect, loader, error);
case COGL_TEXTURE_SOURCE_TYPE_GL_FOREIGN:
return allocate_from_gl_foreign (tex_rect, loader, error);
default:
break;
}
g_return_val_if_reached (FALSE);
}
CoglTextureRectangle *
cogl_texture_rectangle_new_from_bitmap (CoglBitmap *bmp)
{
CoglTextureLoader *loader;
_COGL_RETURN_VAL_IF_FAIL (cogl_is_bitmap (bmp), NULL);
loader = _cogl_texture_create_loader ();
loader->src_type = COGL_TEXTURE_SOURCE_TYPE_BITMAP;
loader->src.bitmap.bitmap = cogl_object_ref (bmp);
loader->src.bitmap.can_convert_in_place = FALSE; /* TODO add api for this */
return _cogl_texture_rectangle_create_base (_cogl_bitmap_get_context (bmp),
cogl_bitmap_get_width (bmp),
cogl_bitmap_get_height (bmp),
cogl_bitmap_get_format (bmp),
loader);
}
CoglTextureRectangle *
cogl_texture_rectangle_new_from_foreign (CoglContext *ctx,
unsigned int gl_handle,
int width,
int height,
CoglPixelFormat format)
{
CoglTextureLoader *loader;
/* NOTE: width, height and internal format are not queriable in
* GLES, hence such a function prototype. Also in the case of full
* opengl the user may be creating a Cogl texture for a
* texture_from_pixmap object where glTexImage2D may not have been
* called and the texture_from_pixmap spec doesn't clarify that it
* is reliable to query back the size from OpenGL.
*/
/* Assert that it is a valid GL texture object */
_COGL_RETURN_VAL_IF_FAIL (ctx->glIsTexture (gl_handle), NULL);
/* Validate width and height */
_COGL_RETURN_VAL_IF_FAIL (width > 0 && height > 0, NULL);
loader = _cogl_texture_create_loader ();
loader->src_type = COGL_TEXTURE_SOURCE_TYPE_GL_FOREIGN;
loader->src.gl_foreign.gl_handle = gl_handle;
loader->src.gl_foreign.width = width;
loader->src.gl_foreign.height = height;
loader->src.gl_foreign.format = format;
return _cogl_texture_rectangle_create_base (ctx, width, height,
format, loader);
}
static int
_cogl_texture_rectangle_get_max_waste (CoglTexture *tex)
{
return -1;
}
static CoglBool
_cogl_texture_rectangle_is_sliced (CoglTexture *tex)
{
return FALSE;
}
static CoglBool
_cogl_texture_rectangle_can_hardware_repeat (CoglTexture *tex)
{
return FALSE;
}
static void
_cogl_texture_rectangle_transform_coords_to_gl (CoglTexture *tex,
float *s,
float *t)
{
*s *= tex->width;
*t *= tex->height;
}
static CoglTransformResult
_cogl_texture_rectangle_transform_quad_coords_to_gl (CoglTexture *tex,
float *coords)
{
CoglBool need_repeat = FALSE;
int i;
for (i = 0; i < 4; i++)
{
if (coords[i] < 0.0f || coords[i] > 1.0f)
need_repeat = TRUE;
coords[i] *= (i & 1) ? tex->height : tex->width;
}
return (need_repeat ? COGL_TRANSFORM_SOFTWARE_REPEAT
: COGL_TRANSFORM_NO_REPEAT);
}
static CoglBool
_cogl_texture_rectangle_get_gl_texture (CoglTexture *tex,
GLuint *out_gl_handle,
GLenum *out_gl_target)
{
CoglTextureRectangle *tex_rect = COGL_TEXTURE_RECTANGLE (tex);
if (out_gl_handle)
*out_gl_handle = tex_rect->gl_texture;
if (out_gl_target)
*out_gl_target = GL_TEXTURE_RECTANGLE_ARB;
return TRUE;
}
static void
_cogl_texture_rectangle_gl_flush_legacy_texobj_filters (CoglTexture *tex,
GLenum min_filter,
GLenum mag_filter)
{
CoglTextureRectangle *tex_rect = COGL_TEXTURE_RECTANGLE (tex);
CoglContext *ctx = tex->context;
if (min_filter == tex_rect->gl_legacy_texobj_min_filter
&& mag_filter == tex_rect->gl_legacy_texobj_mag_filter)
return;
/* Rectangle textures don't support mipmapping */
g_assert (min_filter == GL_LINEAR || min_filter == GL_NEAREST);
/* Store new values */
tex_rect->gl_legacy_texobj_min_filter = min_filter;
tex_rect->gl_legacy_texobj_mag_filter = mag_filter;
/* Apply new filters to the texture */
_cogl_bind_gl_texture_transient (GL_TEXTURE_RECTANGLE_ARB,
tex_rect->gl_texture,
tex_rect->is_foreign);
GE( ctx, glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER,
mag_filter) );
GE( ctx, glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER,
min_filter) );
}
static void
_cogl_texture_rectangle_pre_paint (CoglTexture *tex,
CoglTexturePrePaintFlags flags)
{
/* Rectangle textures don't support mipmaps */
g_assert ((flags & COGL_TEXTURE_NEEDS_MIPMAP) == 0);
}
static void
_cogl_texture_rectangle_ensure_non_quad_rendering (CoglTexture *tex)
{
/* Nothing needs to be done */
}
static CoglBool
_cogl_texture_rectangle_set_region (CoglTexture *tex,
int src_x,
int src_y,
int dst_x,
int dst_y,
int dst_width,
int dst_height,
int level,
CoglBitmap *bmp,
CoglError **error)
{
CoglBitmap *upload_bmp;
GLenum gl_format;
GLenum gl_type;
CoglContext *ctx = tex->context;
CoglBool status;
upload_bmp =
_cogl_bitmap_convert_for_upload (bmp,
_cogl_texture_get_format (tex),
FALSE, /* can't convert in place */
error);
if (upload_bmp == NULL)
return FALSE;
ctx->driver_vtable->pixel_format_to_gl (ctx,
cogl_bitmap_get_format (upload_bmp),
NULL, /* internal format */
&gl_format,
&gl_type);
/* Send data to GL */
status =
ctx->texture_driver->upload_subregion_to_gl (ctx,
tex,
FALSE,
src_x, src_y,
dst_x, dst_y,
dst_width, dst_height,
level,
upload_bmp,
gl_format,
gl_type,
error);
cogl_object_unref (upload_bmp);
return status;
}
static CoglBool
_cogl_texture_rectangle_get_data (CoglTexture *tex,
CoglPixelFormat format,
int rowstride,
uint8_t *data)
{
CoglTextureRectangle *tex_rect = COGL_TEXTURE_RECTANGLE (tex);
CoglContext *ctx = tex->context;
int bpp;
GLenum gl_format;
GLenum gl_type;
bpp = _cogl_pixel_format_get_bytes_per_pixel (format);
ctx->driver_vtable->pixel_format_to_gl (ctx,
format,
NULL, /* internal format */
&gl_format,
&gl_type);
ctx->texture_driver->prep_gl_for_pixels_download (ctx,
rowstride,
tex->width,
bpp);
_cogl_bind_gl_texture_transient (GL_TEXTURE_RECTANGLE_ARB,
tex_rect->gl_texture,
tex_rect->is_foreign);
return ctx->texture_driver->gl_get_tex_image (ctx,
GL_TEXTURE_RECTANGLE_ARB,
gl_format,
gl_type,
data);
}
static CoglPixelFormat
_cogl_texture_rectangle_get_format (CoglTexture *tex)
{
return COGL_TEXTURE_RECTANGLE (tex)->internal_format;
}
static GLenum
_cogl_texture_rectangle_get_gl_format (CoglTexture *tex)
{
return COGL_TEXTURE_RECTANGLE (tex)->gl_format;
}
static CoglBool
_cogl_texture_rectangle_is_foreign (CoglTexture *tex)
{
return COGL_TEXTURE_RECTANGLE (tex)->is_foreign;
}
static CoglTextureType
_cogl_texture_rectangle_get_type (CoglTexture *tex)
{
return COGL_TEXTURE_TYPE_RECTANGLE;
}
static const CoglTextureVtable
cogl_texture_rectangle_vtable =
{
TRUE, /* primitive */
_cogl_texture_rectangle_allocate,
_cogl_texture_rectangle_set_region,
_cogl_texture_rectangle_get_data,
NULL, /* foreach_sub_texture_in_region */
_cogl_texture_rectangle_get_max_waste,
_cogl_texture_rectangle_is_sliced,
_cogl_texture_rectangle_can_hardware_repeat,
_cogl_texture_rectangle_transform_coords_to_gl,
_cogl_texture_rectangle_transform_quad_coords_to_gl,
_cogl_texture_rectangle_get_gl_texture,
_cogl_texture_rectangle_gl_flush_legacy_texobj_filters,
_cogl_texture_rectangle_pre_paint,
_cogl_texture_rectangle_ensure_non_quad_rendering,
_cogl_texture_rectangle_gl_flush_legacy_texobj_wrap_modes,
_cogl_texture_rectangle_get_format,
_cogl_texture_rectangle_get_gl_format,
_cogl_texture_rectangle_get_type,
_cogl_texture_rectangle_is_foreign,
_cogl_texture_rectangle_set_auto_mipmap
};
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