a0441778ad
Since the Cogl 1.18 branch is actively maintained in parallel with the
master branch; this is a counter part to commit 1b83ef938fc16b which
re-licensed the master branch to use the MIT license.
This re-licensing is a follow up to the proposal that was sent to the
Cogl mailing list:
http://lists.freedesktop.org/archives/cogl/2013-December/001465.html
Note: there was a copyright assignment policy in place for Clutter (and
therefore Cogl which was part of Clutter at the time) until the 11th of
June 2010 and so we only checked the details after that point (commit
0bbf50f905)
For each file, authors were identified via this Git command:
$ git blame -p -C -C -C20 -M -M10 0bbf50f905..HEAD
We received blanket approvals for re-licensing all Red Hat and Collabora
contributions which reduced how many people needed to be contacted
individually:
- http://lists.freedesktop.org/archives/cogl/2013-December/001470.html
- http://lists.freedesktop.org/archives/cogl/2014-January/001536.html
Individual approval requests were sent to all the other identified authors
who all confirmed the re-license on the Cogl mailinglist:
http://lists.freedesktop.org/archives/cogl/2014-January
As well as updating the copyright header in all sources files, the
COPYING file has been updated to reflect the license change and also
document the other licenses used in Cogl such as the SGI Free Software
License B, version 2.0 and the 3-clause BSD license.
This patch was not simply cherry-picked from master; but the same
methodology was used to check the source files.
479 lines
16 KiB
C
479 lines
16 KiB
C
/*
|
|
* Cogl
|
|
*
|
|
* A Low Level GPU Graphics and Utilities API
|
|
*
|
|
* Copyright (C) 2009,2010,2011 Intel Corporation.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person
|
|
* obtaining a copy of this software and associated documentation
|
|
* files (the "Software"), to deal in the Software without
|
|
* restriction, including without limitation the rights to use, copy,
|
|
* modify, merge, publish, distribute, sublicense, and/or sell copies
|
|
* of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be
|
|
* included in all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
|
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
|
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
|
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
* SOFTWARE.
|
|
*
|
|
*
|
|
*
|
|
* Authors:
|
|
* Neil Roberts <neil@linux.intel.com>
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include "cogl-util.h"
|
|
#include "cogl-texture-private.h"
|
|
#include "cogl-sub-texture-private.h"
|
|
#include "cogl-sub-texture.h"
|
|
#include "cogl-context-private.h"
|
|
#include "cogl-object.h"
|
|
#include "cogl-texture-driver.h"
|
|
#include "cogl-texture-rectangle-private.h"
|
|
#include "cogl-texture-2d.h"
|
|
#include "cogl-texture-gl-private.h"
|
|
|
|
#include <string.h>
|
|
#include <math.h>
|
|
|
|
static void _cogl_sub_texture_free (CoglSubTexture *sub_tex);
|
|
|
|
COGL_TEXTURE_DEFINE (SubTexture, sub_texture);
|
|
|
|
static const CoglTextureVtable cogl_sub_texture_vtable;
|
|
|
|
static void
|
|
_cogl_sub_texture_unmap_quad (CoglSubTexture *sub_tex,
|
|
float *coords)
|
|
{
|
|
CoglTexture *tex = COGL_TEXTURE (sub_tex);
|
|
|
|
/* NB: coords[] come in as non-normalized if sub_tex->full_texture
|
|
* is a CoglTextureRectangle otherwhise they are normalized. The
|
|
* coordinates we write out though must always be normalized.
|
|
*
|
|
* NB: sub_tex->sub_x/y/width/height are in non-normalized
|
|
* coordinates.
|
|
*/
|
|
if (cogl_is_texture_rectangle (sub_tex->full_texture))
|
|
{
|
|
coords[0] = (coords[0] - sub_tex->sub_x) / tex->width;
|
|
coords[1] = (coords[1] - sub_tex->sub_y) / tex->height;
|
|
coords[2] = (coords[2] - sub_tex->sub_x) / tex->width;
|
|
coords[3] = (coords[3] - sub_tex->sub_y) / tex->height;
|
|
}
|
|
else
|
|
{
|
|
float width = cogl_texture_get_width (sub_tex->full_texture);
|
|
float height = cogl_texture_get_height (sub_tex->full_texture);
|
|
coords[0] = (coords[0] * width - sub_tex->sub_x) / tex->width;
|
|
coords[1] = (coords[1] * height - sub_tex->sub_y) / tex->height;
|
|
coords[2] = (coords[2] * width - sub_tex->sub_x) / tex->width;
|
|
coords[3] = (coords[3] * height - sub_tex->sub_y) / tex->height;
|
|
}
|
|
}
|
|
|
|
static void
|
|
_cogl_sub_texture_map_quad (CoglSubTexture *sub_tex,
|
|
float *coords)
|
|
{
|
|
CoglTexture *tex = COGL_TEXTURE (sub_tex);
|
|
|
|
/* NB: coords[] always come in as normalized coordinates but may go
|
|
* out as non-normalized if sub_tex->full_texture is a
|
|
* CoglTextureRectangle.
|
|
*
|
|
* NB: sub_tex->sub_x/y/width/height are in non-normalized
|
|
* coordinates.
|
|
*/
|
|
|
|
if (cogl_is_texture_rectangle (sub_tex->full_texture))
|
|
{
|
|
coords[0] = coords[0] * tex->width + sub_tex->sub_x;
|
|
coords[1] = coords[1] * tex->height + sub_tex->sub_y;
|
|
coords[2] = coords[2] * tex->width + sub_tex->sub_x;
|
|
coords[3] = coords[3] * tex->height + sub_tex->sub_y;
|
|
}
|
|
else
|
|
{
|
|
float width = cogl_texture_get_width (sub_tex->full_texture);
|
|
float height = cogl_texture_get_height (sub_tex->full_texture);
|
|
coords[0] = (coords[0] * tex->width + sub_tex->sub_x) / width;
|
|
coords[1] = (coords[1] * tex->height + sub_tex->sub_y) / height;
|
|
coords[2] = (coords[2] * tex->width + sub_tex->sub_x) / width;
|
|
coords[3] = (coords[3] * tex->height + sub_tex->sub_y) / height;
|
|
}
|
|
}
|
|
|
|
typedef struct _CoglSubTextureForeachData
|
|
{
|
|
CoglSubTexture *sub_tex;
|
|
CoglMetaTextureCallback callback;
|
|
void *user_data;
|
|
} CoglSubTextureForeachData;
|
|
|
|
static void
|
|
unmap_coords_cb (CoglTexture *slice_texture,
|
|
const float *slice_texture_coords,
|
|
const float *meta_coords,
|
|
void *user_data)
|
|
{
|
|
CoglSubTextureForeachData *data = user_data;
|
|
float unmapped_coords[4];
|
|
|
|
memcpy (unmapped_coords, meta_coords, sizeof (unmapped_coords));
|
|
|
|
_cogl_sub_texture_unmap_quad (data->sub_tex, unmapped_coords);
|
|
|
|
data->callback (slice_texture,
|
|
slice_texture_coords,
|
|
unmapped_coords,
|
|
data->user_data);
|
|
}
|
|
|
|
static void
|
|
_cogl_sub_texture_foreach_sub_texture_in_region (
|
|
CoglTexture *tex,
|
|
float virtual_tx_1,
|
|
float virtual_ty_1,
|
|
float virtual_tx_2,
|
|
float virtual_ty_2,
|
|
CoglMetaTextureCallback callback,
|
|
void *user_data)
|
|
{
|
|
CoglSubTexture *sub_tex = COGL_SUB_TEXTURE (tex);
|
|
CoglTexture *full_texture = sub_tex->full_texture;
|
|
float mapped_coords[4] =
|
|
{ virtual_tx_1, virtual_ty_1, virtual_tx_2, virtual_ty_2};
|
|
float virtual_coords[4] =
|
|
{ virtual_tx_1, virtual_ty_1, virtual_tx_2, virtual_ty_2};
|
|
|
|
/* map the virtual coordinates to ->full_texture coordinates */
|
|
_cogl_sub_texture_map_quad (sub_tex, mapped_coords);
|
|
|
|
/* TODO: Add something like cogl_is_low_level_texture() */
|
|
if (cogl_is_texture_2d (full_texture) ||
|
|
cogl_is_texture_rectangle (full_texture))
|
|
{
|
|
callback (sub_tex->full_texture,
|
|
mapped_coords,
|
|
virtual_coords,
|
|
user_data);
|
|
}
|
|
else
|
|
{
|
|
CoglSubTextureForeachData data;
|
|
|
|
data.sub_tex = sub_tex;
|
|
data.callback = callback;
|
|
data.user_data = user_data;
|
|
|
|
cogl_meta_texture_foreach_in_region (COGL_META_TEXTURE (full_texture),
|
|
mapped_coords[0],
|
|
mapped_coords[1],
|
|
mapped_coords[2],
|
|
mapped_coords[3],
|
|
COGL_PIPELINE_WRAP_MODE_REPEAT,
|
|
COGL_PIPELINE_WRAP_MODE_REPEAT,
|
|
unmap_coords_cb,
|
|
&data);
|
|
}
|
|
}
|
|
|
|
static void
|
|
_cogl_sub_texture_gl_flush_legacy_texobj_wrap_modes (CoglTexture *tex,
|
|
GLenum wrap_mode_s,
|
|
GLenum wrap_mode_t,
|
|
GLenum wrap_mode_p)
|
|
{
|
|
CoglSubTexture *sub_tex = COGL_SUB_TEXTURE (tex);
|
|
|
|
_cogl_texture_gl_flush_legacy_texobj_wrap_modes (sub_tex->full_texture,
|
|
wrap_mode_s,
|
|
wrap_mode_t,
|
|
wrap_mode_p);
|
|
}
|
|
|
|
static void
|
|
_cogl_sub_texture_free (CoglSubTexture *sub_tex)
|
|
{
|
|
cogl_object_unref (sub_tex->next_texture);
|
|
cogl_object_unref (sub_tex->full_texture);
|
|
|
|
/* Chain up */
|
|
_cogl_texture_free (COGL_TEXTURE (sub_tex));
|
|
}
|
|
|
|
CoglSubTexture *
|
|
cogl_sub_texture_new (CoglContext *ctx,
|
|
CoglTexture *next_texture,
|
|
int sub_x, int sub_y,
|
|
int sub_width, int sub_height)
|
|
{
|
|
CoglTexture *full_texture;
|
|
CoglSubTexture *sub_tex;
|
|
CoglTexture *tex;
|
|
unsigned int next_width, next_height;
|
|
|
|
next_width = cogl_texture_get_width (next_texture);
|
|
next_height = cogl_texture_get_height (next_texture);
|
|
|
|
/* The region must specify a non-zero subset of the full texture */
|
|
_COGL_RETURN_VAL_IF_FAIL (sub_x >= 0 && sub_y >= 0, NULL);
|
|
_COGL_RETURN_VAL_IF_FAIL (sub_width > 0 && sub_height > 0, NULL);
|
|
_COGL_RETURN_VAL_IF_FAIL (sub_x + sub_width <= next_width, NULL);
|
|
_COGL_RETURN_VAL_IF_FAIL (sub_y + sub_height <= next_height, NULL);
|
|
|
|
sub_tex = g_new (CoglSubTexture, 1);
|
|
|
|
tex = COGL_TEXTURE (sub_tex);
|
|
|
|
_cogl_texture_init (tex, ctx, sub_width, sub_height,
|
|
_cogl_texture_get_format (next_texture),
|
|
NULL, /* no loader */
|
|
&cogl_sub_texture_vtable);
|
|
|
|
/* If the next texture is also a sub texture we can avoid one level
|
|
of indirection by referencing the full texture of that texture
|
|
instead. */
|
|
if (cogl_is_sub_texture (next_texture))
|
|
{
|
|
CoglSubTexture *other_sub_tex = COGL_SUB_TEXTURE (next_texture);
|
|
full_texture = other_sub_tex->full_texture;
|
|
sub_x += other_sub_tex->sub_x;
|
|
sub_y += other_sub_tex->sub_y;
|
|
}
|
|
else
|
|
full_texture = next_texture;
|
|
|
|
sub_tex->next_texture = cogl_object_ref (next_texture);
|
|
sub_tex->full_texture = cogl_object_ref (full_texture);
|
|
|
|
sub_tex->sub_x = sub_x;
|
|
sub_tex->sub_y = sub_y;
|
|
|
|
return _cogl_sub_texture_object_new (sub_tex);
|
|
}
|
|
|
|
static CoglBool
|
|
_cogl_sub_texture_allocate (CoglTexture *tex,
|
|
CoglError **error)
|
|
{
|
|
CoglSubTexture *sub_tex = COGL_SUB_TEXTURE (tex);
|
|
CoglBool status = cogl_texture_allocate (sub_tex->full_texture, error);
|
|
|
|
_cogl_texture_set_allocated (tex,
|
|
_cogl_texture_get_format (sub_tex->full_texture),
|
|
tex->width, tex->height);
|
|
|
|
return status;
|
|
}
|
|
|
|
CoglTexture *
|
|
cogl_sub_texture_get_parent (CoglSubTexture *sub_texture)
|
|
{
|
|
return sub_texture->next_texture;
|
|
}
|
|
|
|
static int
|
|
_cogl_sub_texture_get_max_waste (CoglTexture *tex)
|
|
{
|
|
CoglSubTexture *sub_tex = COGL_SUB_TEXTURE (tex);
|
|
|
|
return cogl_texture_get_max_waste (sub_tex->full_texture);
|
|
}
|
|
|
|
static CoglBool
|
|
_cogl_sub_texture_is_sliced (CoglTexture *tex)
|
|
{
|
|
CoglSubTexture *sub_tex = COGL_SUB_TEXTURE (tex);
|
|
|
|
return cogl_texture_is_sliced (sub_tex->full_texture);
|
|
}
|
|
|
|
static CoglBool
|
|
_cogl_sub_texture_can_hardware_repeat (CoglTexture *tex)
|
|
{
|
|
CoglSubTexture *sub_tex = COGL_SUB_TEXTURE (tex);
|
|
|
|
/* We can hardware repeat if the subtexture actually represents all of the
|
|
of the full texture */
|
|
return (tex->width ==
|
|
cogl_texture_get_width (sub_tex->full_texture) &&
|
|
tex->height ==
|
|
cogl_texture_get_height (sub_tex->full_texture) &&
|
|
_cogl_texture_can_hardware_repeat (sub_tex->full_texture));
|
|
}
|
|
|
|
static void
|
|
_cogl_sub_texture_transform_coords_to_gl (CoglTexture *tex,
|
|
float *s,
|
|
float *t)
|
|
{
|
|
CoglSubTexture *sub_tex = COGL_SUB_TEXTURE (tex);
|
|
|
|
/* This won't work if the sub texture is not the size of the full
|
|
texture and the coordinates are outside the range [0,1] */
|
|
*s = ((*s * tex->width + sub_tex->sub_x) /
|
|
cogl_texture_get_width (sub_tex->full_texture));
|
|
*t = ((*t * tex->height + sub_tex->sub_y) /
|
|
cogl_texture_get_height (sub_tex->full_texture));
|
|
|
|
_cogl_texture_transform_coords_to_gl (sub_tex->full_texture, s, t);
|
|
}
|
|
|
|
static CoglTransformResult
|
|
_cogl_sub_texture_transform_quad_coords_to_gl (CoglTexture *tex,
|
|
float *coords)
|
|
{
|
|
CoglSubTexture *sub_tex = COGL_SUB_TEXTURE (tex);
|
|
int i;
|
|
|
|
/* We can't support repeating with this method. In this case
|
|
cogl-primitives will resort to manual repeating */
|
|
for (i = 0; i < 4; i++)
|
|
if (coords[i] < 0.0f || coords[i] > 1.0f)
|
|
return COGL_TRANSFORM_SOFTWARE_REPEAT;
|
|
|
|
_cogl_sub_texture_map_quad (sub_tex, coords);
|
|
|
|
return _cogl_texture_transform_quad_coords_to_gl (sub_tex->full_texture,
|
|
coords);
|
|
}
|
|
|
|
static CoglBool
|
|
_cogl_sub_texture_get_gl_texture (CoglTexture *tex,
|
|
GLuint *out_gl_handle,
|
|
GLenum *out_gl_target)
|
|
{
|
|
CoglSubTexture *sub_tex = COGL_SUB_TEXTURE (tex);
|
|
|
|
return cogl_texture_get_gl_texture (sub_tex->full_texture,
|
|
out_gl_handle,
|
|
out_gl_target);
|
|
}
|
|
|
|
static void
|
|
_cogl_sub_texture_gl_flush_legacy_texobj_filters (CoglTexture *tex,
|
|
GLenum min_filter,
|
|
GLenum mag_filter)
|
|
{
|
|
CoglSubTexture *sub_tex = COGL_SUB_TEXTURE (tex);
|
|
|
|
_cogl_texture_gl_flush_legacy_texobj_filters (sub_tex->full_texture,
|
|
min_filter, mag_filter);
|
|
}
|
|
|
|
static void
|
|
_cogl_sub_texture_pre_paint (CoglTexture *tex,
|
|
CoglTexturePrePaintFlags flags)
|
|
{
|
|
CoglSubTexture *sub_tex = COGL_SUB_TEXTURE (tex);
|
|
|
|
_cogl_texture_pre_paint (sub_tex->full_texture, flags);
|
|
}
|
|
|
|
static void
|
|
_cogl_sub_texture_ensure_non_quad_rendering (CoglTexture *tex)
|
|
{
|
|
}
|
|
|
|
static CoglBool
|
|
_cogl_sub_texture_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)
|
|
{
|
|
CoglSubTexture *sub_tex = COGL_SUB_TEXTURE (tex);
|
|
|
|
if (level != 0)
|
|
{
|
|
int full_width = cogl_texture_get_width (sub_tex->full_texture);
|
|
int full_height = cogl_texture_get_width (sub_tex->full_texture);
|
|
|
|
_COGL_RETURN_VAL_IF_FAIL (sub_tex->sub_x == 0 &&
|
|
cogl_texture_get_width (tex) == full_width,
|
|
FALSE);
|
|
_COGL_RETURN_VAL_IF_FAIL (sub_tex->sub_y == 0 &&
|
|
cogl_texture_get_height (tex) == full_height,
|
|
FALSE);
|
|
}
|
|
|
|
return _cogl_texture_set_region_from_bitmap (sub_tex->full_texture,
|
|
src_x, src_y,
|
|
dst_width, dst_height,
|
|
bmp,
|
|
dst_x + sub_tex->sub_x,
|
|
dst_y + sub_tex->sub_y,
|
|
level,
|
|
error);
|
|
}
|
|
|
|
static CoglPixelFormat
|
|
_cogl_sub_texture_get_format (CoglTexture *tex)
|
|
{
|
|
CoglSubTexture *sub_tex = COGL_SUB_TEXTURE (tex);
|
|
|
|
return _cogl_texture_get_format (sub_tex->full_texture);
|
|
}
|
|
|
|
static GLenum
|
|
_cogl_sub_texture_get_gl_format (CoglTexture *tex)
|
|
{
|
|
CoglSubTexture *sub_tex = COGL_SUB_TEXTURE (tex);
|
|
|
|
return _cogl_texture_gl_get_format (sub_tex->full_texture);
|
|
}
|
|
|
|
static CoglTextureType
|
|
_cogl_sub_texture_get_type (CoglTexture *tex)
|
|
{
|
|
CoglSubTexture *sub_tex = COGL_SUB_TEXTURE (tex);
|
|
|
|
return _cogl_texture_get_type (sub_tex->full_texture);
|
|
}
|
|
|
|
static const CoglTextureVtable
|
|
cogl_sub_texture_vtable =
|
|
{
|
|
FALSE, /* not primitive */
|
|
_cogl_sub_texture_allocate,
|
|
_cogl_sub_texture_set_region,
|
|
NULL, /* get_data */
|
|
_cogl_sub_texture_foreach_sub_texture_in_region,
|
|
_cogl_sub_texture_get_max_waste,
|
|
_cogl_sub_texture_is_sliced,
|
|
_cogl_sub_texture_can_hardware_repeat,
|
|
_cogl_sub_texture_transform_coords_to_gl,
|
|
_cogl_sub_texture_transform_quad_coords_to_gl,
|
|
_cogl_sub_texture_get_gl_texture,
|
|
_cogl_sub_texture_gl_flush_legacy_texobj_filters,
|
|
_cogl_sub_texture_pre_paint,
|
|
_cogl_sub_texture_ensure_non_quad_rendering,
|
|
_cogl_sub_texture_gl_flush_legacy_texobj_wrap_modes,
|
|
_cogl_sub_texture_get_format,
|
|
_cogl_sub_texture_get_gl_format,
|
|
_cogl_sub_texture_get_type,
|
|
NULL, /* is_foreign */
|
|
NULL /* set_auto_mipmap */
|
|
};
|