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mutter/cogl/cogl-texture-2d-sliced.c
Robert Bragg af7398788a remove internal_format and redundant error arguments 
Texture allocation is now consistently handled lazily such that the
internal format can now be controlled using
cogl_texture_set_components() and cogl_texture_set_premultiplied()
before allocating the texture with cogl_texture_allocate(). This means
that the internal_format arguments to texture constructors are now
redundant and since most of the texture constructors now can't ever fail
the error arguments are also redundant. This now means we no longer
use CoglPixelFormat in the public api for describing the internal format
of textures which had been bad solution originally due to how specific
CoglPixelFormat is which is missleading when we don't support such
explicit control over the internal format.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
(cherry picked from commit 99a53c82e9ab0a1e5ee35941bf83dc334b1fbe87)

Note: there are numerous API changes for functions currently marked
as 'unstable' which we don't think are in use by anyone depending on
a stable 1.x api. Compared to the original patch though this avoids
changing the cogl_texture_rectangle_new_with_size() api which we know
is used by Mutter.
2014-01-09 15:49:47 +00:00

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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2007,2008,2009,2010 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:
* Matthew Allum <mallum@openedhand.com>
* Neil Roberts <neil@linux.intel.com>
* Robert Bragg <robert@linux.intel.com>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "cogl-debug.h"
#include "cogl-private.h"
#include "cogl-util.h"
#include "cogl-bitmap.h"
#include "cogl-bitmap-private.h"
#include "cogl-texture-private.h"
#include "cogl-texture-2d-gl.h"
#include "cogl-texture-2d-private.h"
#include "cogl-texture-2d-sliced-private.h"
#include "cogl-texture-gl-private.h"
#include "cogl-texture-driver.h"
#include "cogl-context-private.h"
#include "cogl-object-private.h"
#include "cogl-spans.h"
#include "cogl-journal-private.h"
#include "cogl-pipeline-opengl-private.h"
#include "cogl-primitive-texture.h"
#include "cogl-error-private.h"
#include "cogl-texture-gl-private.h"
#include <string.h>
#include <stdlib.h>
#include <math.h>
static void _cogl_texture_2d_sliced_free (CoglTexture2DSliced *tex_2ds);
COGL_TEXTURE_DEFINE (Texture2DSliced, texture_2d_sliced);
static const CoglTextureVtable cogl_texture_2d_sliced_vtable;
typedef struct _ForeachData
{
CoglMetaTextureCallback callback;
void *user_data;
float x_normalize_factor;
float y_normalize_factor;
} ForeachData;
static void
re_normalize_sub_texture_coords_cb (CoglTexture *sub_texture,
const float *sub_texture_coords,
const float *meta_coords,
void *user_data)
{
ForeachData *data = user_data;
/* The coordinates passed to the span iterating code were
* un-normalized so we need to renormalize them before passing them
* on */
float re_normalized_coords[4] =
{
meta_coords[0] * data->x_normalize_factor,
meta_coords[1] * data->y_normalize_factor,
meta_coords[2] * data->x_normalize_factor,
meta_coords[3] * data->y_normalize_factor
};
data->callback (sub_texture, sub_texture_coords, re_normalized_coords,
data->user_data);
}
static void
_cogl_texture_2d_sliced_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)
{
CoglTexture2DSliced *tex_2ds = COGL_TEXTURE_2D_SLICED (tex);
CoglSpan *x_spans = (CoglSpan *)tex_2ds->slice_x_spans->data;
CoglSpan *y_spans = (CoglSpan *)tex_2ds->slice_y_spans->data;
CoglTexture **textures = (CoglTexture **)tex_2ds->slice_textures->data;
float un_normalized_coords[4];
ForeachData data;
/* NB: its convenient for us to store non-normalized coordinates in
* our CoglSpans but that means we need to un-normalize the incoming
* virtual coordinates and make sure we re-normalize the coordinates
* before calling the given callback.
*/
data.callback = callback;
data.user_data = user_data;
data.x_normalize_factor = 1.0f / tex->width;
data.y_normalize_factor = 1.0f / tex->height;
un_normalized_coords[0] = virtual_tx_1 * tex->width;
un_normalized_coords[1] = virtual_ty_1 * tex->height;
un_normalized_coords[2] = virtual_tx_2 * tex->width;
un_normalized_coords[3] = virtual_ty_2 * tex->height;
/* Note that the normalize factors passed here are the reciprocal of
* the factors calculated above because the span iterating code
* normalizes by dividing by the factor instead of multiplying */
_cogl_texture_spans_foreach_in_region (x_spans,
tex_2ds->slice_x_spans->len,
y_spans,
tex_2ds->slice_y_spans->len,
textures,
un_normalized_coords,
tex->width,
tex->height,
COGL_PIPELINE_WRAP_MODE_REPEAT,
COGL_PIPELINE_WRAP_MODE_REPEAT,
re_normalize_sub_texture_coords_cb,
&data);
}
static uint8_t *
_cogl_texture_2d_sliced_allocate_waste_buffer (CoglTexture2DSliced *tex_2ds,
CoglPixelFormat format)
{
CoglSpan *last_x_span;
CoglSpan *last_y_span;
uint8_t *waste_buf = NULL;
/* If the texture has any waste then allocate a buffer big enough to
fill the gaps */
last_x_span = &g_array_index (tex_2ds->slice_x_spans, CoglSpan,
tex_2ds->slice_x_spans->len - 1);
last_y_span = &g_array_index (tex_2ds->slice_y_spans, CoglSpan,
tex_2ds->slice_y_spans->len - 1);
if (last_x_span->waste > 0 || last_y_span->waste > 0)
{
int bpp = _cogl_pixel_format_get_bytes_per_pixel (format);
CoglSpan *first_x_span
= &g_array_index (tex_2ds->slice_x_spans, CoglSpan, 0);
CoglSpan *first_y_span
= &g_array_index (tex_2ds->slice_y_spans, CoglSpan, 0);
unsigned int right_size = first_y_span->size * last_x_span->waste;
unsigned int bottom_size = first_x_span->size * last_y_span->waste;
waste_buf = g_malloc (MAX (right_size, bottom_size) * bpp);
}
return waste_buf;
}
static CoglBool
_cogl_texture_2d_sliced_set_waste (CoglTexture2DSliced *tex_2ds,
CoglBitmap *source_bmp,
CoglTexture2D *slice_tex,
uint8_t *waste_buf,
CoglSpan *x_span,
CoglSpan *y_span,
CoglSpanIter *x_iter,
CoglSpanIter *y_iter,
int src_x,
int src_y,
int dst_x,
int dst_y,
CoglError **error)
{
CoglBool need_x, need_y;
CoglContext *ctx = COGL_TEXTURE (tex_2ds)->context;
/* If the x_span is sliced and the upload touches the
rightmost pixels then fill the waste with copies of the
pixels */
need_x = x_span->waste > 0 &&
x_iter->intersect_end - x_iter->pos >= x_span->size - x_span->waste;
/* same for the bottom-most pixels */
need_y = y_span->waste > 0 &&
y_iter->intersect_end - y_iter->pos >= y_span->size - y_span->waste;
if (need_x || need_y)
{
int bmp_rowstride = cogl_bitmap_get_rowstride (source_bmp);
CoglPixelFormat source_format = cogl_bitmap_get_format (source_bmp);
int bpp = _cogl_pixel_format_get_bytes_per_pixel (source_format);
uint8_t *bmp_data;
const uint8_t *src;
uint8_t *dst;
unsigned int wy, wx;
CoglBitmap *waste_bmp;
bmp_data = _cogl_bitmap_map (source_bmp, COGL_BUFFER_ACCESS_READ, 0, error);
if (bmp_data == NULL)
return FALSE;
if (need_x)
{
src = (bmp_data + ((src_y + (int) y_iter->intersect_start - dst_y) *
bmp_rowstride) +
(src_x + (int)x_span->start + (int)x_span->size -
(int)x_span->waste - dst_x - 1) * bpp);
dst = waste_buf;
for (wy = 0;
wy < y_iter->intersect_end - y_iter->intersect_start;
wy++)
{
for (wx = 0; wx < x_span->waste; wx++)
{
memcpy (dst, src, bpp);
dst += bpp;
}
src += bmp_rowstride;
}
waste_bmp = cogl_bitmap_new_for_data (ctx,
x_span->waste,
y_iter->intersect_end -
y_iter->intersect_start,
source_format,
x_span->waste * bpp,
waste_buf);
if (!_cogl_texture_set_region_from_bitmap (COGL_TEXTURE (slice_tex),
0, /* src_x */
0, /* src_y */
x_span->waste, /* width */
/* height */
y_iter->intersect_end -
y_iter->intersect_start,
waste_bmp,
/* dst_x */
x_span->size - x_span->waste,
y_iter->intersect_start -
y_span->start, /* dst_y */
0, /* level */
error))
{
cogl_object_unref (waste_bmp);
_cogl_bitmap_unmap (source_bmp);
return FALSE;
}
cogl_object_unref (waste_bmp);
}
if (need_y)
{
unsigned int copy_width, intersect_width;
src = (bmp_data + ((src_x + (int) x_iter->intersect_start - dst_x) *
bpp) +
(src_y + (int)y_span->start + (int)y_span->size -
(int)y_span->waste - dst_y - 1) * bmp_rowstride);
dst = waste_buf;
if (x_iter->intersect_end - x_iter->pos
>= x_span->size - x_span->waste)
copy_width = x_span->size + x_iter->pos - x_iter->intersect_start;
else
copy_width = x_iter->intersect_end - x_iter->intersect_start;
intersect_width = x_iter->intersect_end - x_iter->intersect_start;
for (wy = 0; wy < y_span->waste; wy++)
{
memcpy (dst, src, intersect_width * bpp);
dst += intersect_width * bpp;
for (wx = intersect_width; wx < copy_width; wx++)
{
memcpy (dst, dst - bpp, bpp);
dst += bpp;
}
}
waste_bmp = cogl_bitmap_new_for_data (ctx,
copy_width,
y_span->waste,
source_format,
copy_width * bpp,
waste_buf);
if (!_cogl_texture_set_region_from_bitmap (COGL_TEXTURE (slice_tex),
0, /* src_x */
0, /* src_y */
copy_width, /* width */
y_span->waste, /* height */
waste_bmp,
/* dst_x */
x_iter->intersect_start -
x_iter->pos,
/* dst_y */
y_span->size - y_span->waste,
0, /* level */
error))
{
cogl_object_unref (waste_bmp);
_cogl_bitmap_unmap (source_bmp);
return FALSE;
}
cogl_object_unref (waste_bmp);
}
_cogl_bitmap_unmap (source_bmp);
}
return TRUE;
}
static CoglBool
_cogl_texture_2d_sliced_upload_bitmap (CoglTexture2DSliced *tex_2ds,
CoglBitmap *bmp,
CoglError **error)
{
CoglSpan *x_span;
CoglSpan *y_span;
CoglTexture2D *slice_tex;
int x, y;
uint8_t *waste_buf;
CoglPixelFormat bmp_format;
bmp_format = cogl_bitmap_get_format (bmp);
waste_buf = _cogl_texture_2d_sliced_allocate_waste_buffer (tex_2ds,
bmp_format);
/* Iterate vertical slices */
for (y = 0; y < tex_2ds->slice_y_spans->len; ++y)
{
y_span = &g_array_index (tex_2ds->slice_y_spans, CoglSpan, y);
/* Iterate horizontal slices */
for (x = 0; x < tex_2ds->slice_x_spans->len; ++x)
{
int slice_num = y * tex_2ds->slice_x_spans->len + x;
CoglSpanIter x_iter, y_iter;
x_span = &g_array_index (tex_2ds->slice_x_spans, CoglSpan, x);
/* Pick the gl texture object handle */
slice_tex = g_array_index (tex_2ds->slice_textures,
CoglTexture2D *, slice_num);
if (!_cogl_texture_set_region_from_bitmap (COGL_TEXTURE (slice_tex),
x_span->start, /* src x */
y_span->start, /* src y */
x_span->size -
x_span->waste, /* width */
y_span->size -
y_span->waste, /* height */
bmp,
0, /* dst x */
0, /* dst y */
0, /* level */
error))
{
if (waste_buf)
g_free (waste_buf);
return FALSE;
}
/* Set up a fake iterator that covers the whole slice */
x_iter.intersect_start = x_span->start;
x_iter.intersect_end = (x_span->start +
x_span->size -
x_span->waste);
x_iter.pos = x_span->start;
y_iter.intersect_start = y_span->start;
y_iter.intersect_end = (y_span->start +
y_span->size -
y_span->waste);
y_iter.pos = y_span->start;
if (!_cogl_texture_2d_sliced_set_waste (tex_2ds,
bmp,
slice_tex,
waste_buf,
x_span, y_span,
&x_iter, &y_iter,
0, /* src_x */
0, /* src_y */
0, /* dst_x */
0,
error)) /* dst_y */
{
if (waste_buf)
g_free (waste_buf);
return FALSE;
}
}
}
if (waste_buf)
g_free (waste_buf);
return TRUE;
}
static CoglBool
_cogl_texture_2d_sliced_upload_subregion (CoglTexture2DSliced *tex_2ds,
int src_x,
int src_y,
int dst_x,
int dst_y,
int width,
int height,
CoglBitmap *source_bmp,
CoglError **error)
{
CoglTexture *tex = COGL_TEXTURE (tex_2ds);
CoglSpan *x_span;
CoglSpan *y_span;
CoglSpanIter x_iter;
CoglSpanIter y_iter;
CoglTexture2D *slice_tex;
int source_x = 0, source_y = 0;
int inter_w = 0, inter_h = 0;
int local_x = 0, local_y = 0;
uint8_t *waste_buf;
CoglPixelFormat source_format;
source_format = cogl_bitmap_get_format (source_bmp);
waste_buf =
_cogl_texture_2d_sliced_allocate_waste_buffer (tex_2ds, source_format);
/* Iterate vertical spans */
for (source_y = src_y,
_cogl_span_iter_begin (&y_iter,
(CoglSpan *)tex_2ds->slice_y_spans->data,
tex_2ds->slice_y_spans->len,
tex->height,
dst_y,
dst_y + height,
COGL_PIPELINE_WRAP_MODE_REPEAT);
!_cogl_span_iter_end (&y_iter);
_cogl_span_iter_next (&y_iter),
source_y += inter_h )
{
y_span = &g_array_index (tex_2ds->slice_y_spans, CoglSpan,
y_iter.index);
/* Iterate horizontal spans */
for (source_x = src_x,
_cogl_span_iter_begin (&x_iter,
(CoglSpan *)tex_2ds->slice_x_spans->data,
tex_2ds->slice_x_spans->len,
tex->width,
dst_x,
dst_x + width,
COGL_PIPELINE_WRAP_MODE_REPEAT);
!_cogl_span_iter_end (&x_iter);
_cogl_span_iter_next (&x_iter),
source_x += inter_w )
{
int slice_num;
x_span = &g_array_index (tex_2ds->slice_x_spans, CoglSpan,
x_iter.index);
/* Pick intersection width and height */
inter_w = (x_iter.intersect_end - x_iter.intersect_start);
inter_h = (y_iter.intersect_end - y_iter.intersect_start);
/* Localize intersection top-left corner to slice*/
local_x = (x_iter.intersect_start - x_iter.pos);
local_y = (y_iter.intersect_start - y_iter.pos);
slice_num = y_iter.index * tex_2ds->slice_x_spans->len + x_iter.index;
/* Pick slice texture */
slice_tex = g_array_index (tex_2ds->slice_textures,
CoglTexture2D *, slice_num);
if (!_cogl_texture_set_region_from_bitmap (COGL_TEXTURE (slice_tex),
source_x,
source_y,
inter_w, /* width */
inter_h, /* height */
source_bmp,
local_x, /* dst x */
local_y, /* dst y */
0, /* level */
error))
{
if (waste_buf)
g_free (waste_buf);
return FALSE;
}
if (!_cogl_texture_2d_sliced_set_waste (tex_2ds,
source_bmp,
slice_tex,
waste_buf,
x_span, y_span,
&x_iter, &y_iter,
src_x, src_y,
dst_x, dst_y,
error))
{
if (waste_buf)
g_free (waste_buf);
return FALSE;
}
}
}
if (waste_buf)
g_free (waste_buf);
return TRUE;
}
static int
_cogl_rect_slices_for_size (int size_to_fill,
int max_span_size,
int max_waste,
GArray *out_spans)
{
int n_spans = 0;
CoglSpan span;
/* Init first slice span */
span.start = 0;
span.size = max_span_size;
span.waste = 0;
/* Repeat until whole area covered */
while (size_to_fill >= span.size)
{
/* Add another slice span of same size */
if (out_spans)
g_array_append_val (out_spans, span);
span.start += span.size;
size_to_fill -= span.size;
n_spans++;
}
/* Add one last smaller slice span */
if (size_to_fill > 0)
{
span.size = size_to_fill;
if (out_spans)
g_array_append_val (out_spans, span);
n_spans++;
}
return n_spans;
}
static int
_cogl_pot_slices_for_size (int size_to_fill,
int max_span_size,
int max_waste,
GArray *out_spans)
{
int n_spans = 0;
CoglSpan span;
/* Init first slice span */
span.start = 0;
span.size = max_span_size;
span.waste = 0;
/* Fix invalid max_waste */
if (max_waste < 0)
max_waste = 0;
while (TRUE)
{
/* Is the whole area covered? */
if (size_to_fill > span.size)
{
/* Not yet - add a span of this size */
if (out_spans)
g_array_append_val (out_spans, span);
span.start += span.size;
size_to_fill -= span.size;
n_spans++;
}
else if (span.size - size_to_fill <= max_waste)
{
/* Yes and waste is small enough */
/* Pick the next power of two up from size_to_fill. This can
sometimes be less than the span.size that would be chosen
otherwise */
span.size = _cogl_util_next_p2 (size_to_fill);
span.waste = span.size - size_to_fill;
if (out_spans)
g_array_append_val (out_spans, span);
return ++n_spans;
}
else
{
/* Yes but waste is too large */
while (span.size - size_to_fill > max_waste)
{
span.size /= 2;
g_assert (span.size > 0);
}
}
}
/* Can't get here */
return 0;
}
static void
_cogl_texture_2d_sliced_gl_flush_legacy_texobj_wrap_modes (CoglTexture *tex,
GLenum wrap_mode_s,
GLenum wrap_mode_t,
GLenum wrap_mode_p)
{
CoglTexture2DSliced *tex_2ds = COGL_TEXTURE_2D_SLICED (tex);
int i;
/* Pass the set wrap mode on to all of the child textures */
for (i = 0; i < tex_2ds->slice_textures->len; i++)
{
CoglTexture2D *slice_tex = g_array_index (tex_2ds->slice_textures,
CoglTexture2D *,
i);
_cogl_texture_gl_flush_legacy_texobj_wrap_modes (COGL_TEXTURE (slice_tex),
wrap_mode_s,
wrap_mode_t,
wrap_mode_p);
}
}
static void
free_spans (CoglTexture2DSliced *tex_2ds)
{
if (tex_2ds->slice_x_spans != NULL)
{
g_array_free (tex_2ds->slice_x_spans, TRUE);
tex_2ds->slice_x_spans = NULL;
}
if (tex_2ds->slice_y_spans != NULL)
{
g_array_free (tex_2ds->slice_y_spans, TRUE);
tex_2ds->slice_y_spans = NULL;
}
}
static CoglBool
setup_spans (CoglContext *ctx,
CoglTexture2DSliced *tex_2ds,
int width,
int height,
int max_waste,
CoglPixelFormat internal_format,
CoglError **error)
{
int max_width;
int max_height;
int n_x_slices;
int n_y_slices;
int (*slices_for_size) (int, int, int, GArray*);
/* Initialize size of largest slice according to supported features */
if (cogl_has_feature (ctx, COGL_FEATURE_ID_TEXTURE_NPOT))
{
max_width = width;
max_height = height;
slices_for_size = _cogl_rect_slices_for_size;
}
else
{
max_width = _cogl_util_next_p2 (width);
max_height = _cogl_util_next_p2 (height);
slices_for_size = _cogl_pot_slices_for_size;
}
/* Negative number means no slicing forced by the user */
if (max_waste <= -1)
{
CoglSpan span;
/* Check if size supported else bail out */
if (!ctx->driver_vtable->texture_2d_can_create (ctx,
max_width,
max_height,
internal_format))
{
_cogl_set_error (error,
COGL_TEXTURE_ERROR,
COGL_TEXTURE_ERROR_SIZE,
"Sliced texture size of %d x %d not possible "
"with max waste set to -1",
width,
height);
return FALSE;
}
n_x_slices = 1;
n_y_slices = 1;
/* Init span arrays */
tex_2ds->slice_x_spans = g_array_sized_new (FALSE, FALSE,
sizeof (CoglSpan),
1);
tex_2ds->slice_y_spans = g_array_sized_new (FALSE, FALSE,
sizeof (CoglSpan),
1);
/* Add a single span for width and height */
span.start = 0;
span.size = max_width;
span.waste = max_width - width;
g_array_append_val (tex_2ds->slice_x_spans, span);
span.size = max_height;
span.waste = max_height - height;
g_array_append_val (tex_2ds->slice_y_spans, span);
}
else
{
/* Decrease the size of largest slice until supported by GL */
while (!ctx->driver_vtable->texture_2d_can_create (ctx,
max_width,
max_height,
internal_format))
{
/* Alternate between width and height */
if (max_width > max_height)
max_width /= 2;
else
max_height /= 2;
if (max_width == 0 || max_height == 0)
{
/* Maybe it would be ok to just g_warn_if_reached() for this
* codepath */
_cogl_set_error (error,
COGL_TEXTURE_ERROR,
COGL_TEXTURE_ERROR_SIZE,
"No suitable slice geometry found");
free_spans (tex_2ds);
return FALSE;
}
}
/* Determine the slices required to cover the bitmap area */
n_x_slices = slices_for_size (width,
max_width, max_waste,
NULL);
n_y_slices = slices_for_size (height,
max_height, max_waste,
NULL);
/* Init span arrays with reserved size */
tex_2ds->slice_x_spans = g_array_sized_new (FALSE, FALSE,
sizeof (CoglSpan),
n_x_slices);
tex_2ds->slice_y_spans = g_array_sized_new (FALSE, FALSE,
sizeof (CoglSpan),
n_y_slices);
/* Fill span arrays with info */
slices_for_size (width,
max_width, max_waste,
tex_2ds->slice_x_spans);
slices_for_size (height,
max_height, max_waste,
tex_2ds->slice_y_spans);
}
return TRUE;
}
static void
free_slices (CoglTexture2DSliced *tex_2ds)
{
if (tex_2ds->slice_textures != NULL)
{
int i;
for (i = 0; i < tex_2ds->slice_textures->len; i++)
{
CoglTexture2D *slice_tex =
g_array_index (tex_2ds->slice_textures, CoglTexture2D *, i);
cogl_object_unref (slice_tex);
}
g_array_free (tex_2ds->slice_textures, TRUE);
}
free_spans (tex_2ds);
}
static CoglBool
allocate_slices (CoglTexture2DSliced *tex_2ds,
int width,
int height,
int max_waste,
CoglPixelFormat internal_format,
CoglError **error)
{
CoglTexture *tex = COGL_TEXTURE (tex_2ds);
CoglContext *ctx = tex->context;
int n_x_slices;
int n_y_slices;
int n_slices;
int x, y;
CoglSpan *x_span;
CoglSpan *y_span;
tex_2ds->internal_format = internal_format;
if (!setup_spans (ctx, tex_2ds,
width,
height,
max_waste,
internal_format,
error))
{
return FALSE;
}
n_x_slices = tex_2ds->slice_x_spans->len;
n_y_slices = tex_2ds->slice_y_spans->len;
n_slices = n_x_slices * n_y_slices;
tex_2ds->slice_textures = g_array_sized_new (FALSE, FALSE,
sizeof (CoglTexture2D *),
n_slices);
/* Allocate each slice */
for (y = 0; y < n_y_slices; ++y)
{
y_span = &g_array_index (tex_2ds->slice_y_spans, CoglSpan, y);
for (x = 0; x < n_x_slices; ++x)
{
CoglTexture *slice;
x_span = &g_array_index (tex_2ds->slice_x_spans, CoglSpan, x);
COGL_NOTE (SLICING, "CREATE SLICE (%d,%d)\tsize (%d,%d)",
x, y,
(int)(x_span->size - x_span->waste),
(int)(y_span->size - y_span->waste));
slice = COGL_TEXTURE (
cogl_texture_2d_new_with_size (ctx,
x_span->size, y_span->size));
_cogl_texture_copy_internal_format (tex, slice);
g_array_append_val (tex_2ds->slice_textures, slice);
if (!cogl_texture_allocate (slice, error))
{
free_slices (tex_2ds);
return FALSE;
}
}
}
return TRUE;
}
static void
_cogl_texture_2d_sliced_free (CoglTexture2DSliced *tex_2ds)
{
free_slices (tex_2ds);
/* Chain up */
_cogl_texture_free (COGL_TEXTURE (tex_2ds));
}
static CoglTexture2DSliced *
_cogl_texture_2d_sliced_create_base (CoglContext *ctx,
int width,
int height,
int max_waste,
CoglPixelFormat internal_format,
CoglTextureLoader *loader)
{
CoglTexture2DSliced *tex_2ds = g_new0 (CoglTexture2DSliced, 1);
_cogl_texture_init (COGL_TEXTURE (tex_2ds), ctx, width, height,
internal_format, loader,
&cogl_texture_2d_sliced_vtable);
tex_2ds->max_waste = max_waste;
return _cogl_texture_2d_sliced_object_new (tex_2ds);
}
CoglTexture2DSliced *
cogl_texture_2d_sliced_new_with_size (CoglContext *ctx,
int width,
int height,
int max_waste)
{
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_2d_sliced_create_base (ctx,
width,
height,
max_waste,
COGL_PIXEL_FORMAT_RGBA_8888_PRE,
loader);
}
CoglTexture2DSliced *
_cogl_texture_2d_sliced_new_from_bitmap (CoglBitmap *bmp,
int max_waste,
CoglBool can_convert_in_place)
{
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 = can_convert_in_place;
return _cogl_texture_2d_sliced_create_base (_cogl_bitmap_get_context (bmp),
cogl_bitmap_get_width (bmp),
cogl_bitmap_get_height (bmp),
max_waste,
cogl_bitmap_get_format (bmp),
loader);
}
CoglTexture2DSliced *
cogl_texture_2d_sliced_new_from_bitmap (CoglBitmap *bmp,
int max_waste)
{
return _cogl_texture_2d_sliced_new_from_bitmap (bmp,
max_waste,
FALSE);
}
CoglTexture2DSliced *
_cogl_texture_2d_sliced_new_from_foreign (CoglContext *ctx,
unsigned int gl_handle,
unsigned int gl_target,
int width,
int height,
int x_pot_waste,
int y_pot_waste,
CoglPixelFormat format)
{
CoglTextureLoader *loader;
/* NOTE: width, height and internal format are not queriable
* in GLES, hence such a function prototype.
*/
/* This should only be called when the texture target is 2D. If a
rectangle texture is used then _cogl_texture_new_from_foreign
will create a cogl_texture_rectangle instead */
_COGL_RETURN_VAL_IF_FAIL (gl_target == GL_TEXTURE_2D, NULL);
/* Assert it is a valid GL texture object */
_COGL_RETURN_VAL_IF_FAIL (ctx->glIsTexture (gl_handle), FALSE);
/* Validate width and height */
_COGL_RETURN_VAL_IF_FAIL (width > 0 && height > 0, NULL);
/* Validate pot waste */
_COGL_RETURN_VAL_IF_FAIL (x_pot_waste >= 0 && x_pot_waste < width &&
y_pot_waste >= 0 && y_pot_waste < height,
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 + x_pot_waste;
loader->src.gl_foreign.height = height + y_pot_waste;
loader->src.gl_foreign.format = format;
return _cogl_texture_2d_sliced_create_base (ctx,
width,
height,
0, /* max waste */
format, loader);
}
CoglTexture2DSliced *
cogl_texture_2d_sliced_new_from_data (CoglContext *ctx,
int width,
int height,
int max_waste,
CoglPixelFormat format,
int rowstride,
const uint8_t *data,
CoglError **error)
{
CoglBitmap *bmp;
CoglTexture2DSliced *tex_2ds;
_COGL_RETURN_VAL_IF_FAIL (format != COGL_PIXEL_FORMAT_ANY, NULL);
_COGL_RETURN_VAL_IF_FAIL (data != NULL, NULL);
/* Rowstride from width if not given */
if (rowstride == 0)
rowstride = width * _cogl_pixel_format_get_bytes_per_pixel (format);
/* Wrap the data into a bitmap */
bmp = cogl_bitmap_new_for_data (ctx,
width, height,
format,
rowstride,
(uint8_t *) data);
tex_2ds = cogl_texture_2d_sliced_new_from_bitmap (bmp, max_waste);
cogl_object_unref (bmp);
if (tex_2ds &&
!cogl_texture_allocate (COGL_TEXTURE (tex_2ds), error))
{
cogl_object_unref (tex_2ds);
return NULL;
}
return tex_2ds;
}
CoglTexture2DSliced *
cogl_texture_2d_sliced_new_from_file (CoglContext *ctx,
const char *filename,
int max_waste,
CoglError **error)
{
CoglBitmap *bmp;
CoglTexture2DSliced *tex_2ds = NULL;
_COGL_RETURN_VAL_IF_FAIL (error == NULL || *error == NULL, NULL);
bmp = _cogl_bitmap_from_file (ctx, filename, error);
if (bmp == NULL)
return NULL;
tex_2ds = _cogl_texture_2d_sliced_new_from_bitmap (bmp,
max_waste,
TRUE); /* can convert in-place */
cogl_object_unref (bmp);
return tex_2ds;
}
static CoglBool
allocate_with_size (CoglTexture2DSliced *tex_2ds,
CoglTextureLoader *loader,
CoglError **error)
{
CoglTexture *tex = COGL_TEXTURE (tex_2ds);
CoglPixelFormat internal_format =
_cogl_texture_determine_internal_format (tex, COGL_PIXEL_FORMAT_ANY);
if (allocate_slices (tex_2ds,
loader->src.sized.width,
loader->src.sized.height,
tex_2ds->max_waste,
internal_format,
error))
{
_cogl_texture_set_allocated (COGL_TEXTURE (tex_2ds),
internal_format,
loader->src.sized.width,
loader->src.sized.height);
return TRUE;
}
else
return FALSE;
}
static CoglBool
allocate_from_bitmap (CoglTexture2DSliced *tex_2ds,
CoglTextureLoader *loader,
CoglError **error)
{
CoglTexture *tex = COGL_TEXTURE (tex_2ds);
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;
CoglPixelFormat internal_format;
CoglBitmap *upload_bmp;
_COGL_RETURN_VAL_IF_FAIL (tex_2ds->slice_textures == NULL, FALSE);
internal_format =
_cogl_texture_determine_internal_format (tex,
cogl_bitmap_get_format (bmp));
upload_bmp = _cogl_bitmap_convert_for_upload (bmp,
internal_format,
can_convert_in_place,
error);
if (upload_bmp == NULL)
return FALSE;
if (!allocate_slices (tex_2ds,
width,
height,
tex_2ds->max_waste,
internal_format,
error))
{
cogl_object_unref (upload_bmp);
return FALSE;
}
if (!_cogl_texture_2d_sliced_upload_bitmap (tex_2ds,
upload_bmp,
error))
{
free_slices (tex_2ds);
cogl_object_unref (upload_bmp);
return FALSE;
}
cogl_object_unref (upload_bmp);
_cogl_texture_set_allocated (tex, internal_format, width, height);
return TRUE;
}
static CoglBool
allocate_from_gl_foreign (CoglTexture2DSliced *tex_2ds,
CoglTextureLoader *loader,
CoglError **error)
{
CoglTexture *tex = COGL_TEXTURE (tex_2ds);
CoglContext *ctx = tex->context;
CoglPixelFormat format = loader->src.gl_foreign.format;
int gl_width = loader->src.gl_foreign.width;
int gl_height = loader->src.gl_foreign.height;
int x_pot_waste = gl_width - tex->width;
int y_pot_waste = gl_height - tex->height;
CoglSpan x_span;
CoglSpan y_span;
CoglTexture2D *tex_2d =
cogl_texture_2d_gl_new_from_foreign (ctx,
loader->src.gl_foreign.gl_handle,
gl_width,
gl_height,
format);
if (!cogl_texture_allocate (COGL_TEXTURE (tex_2d), error))
{
cogl_object_unref (tex_2d);
return FALSE;
}
/* The texture 2d backend may use a different pixel format if it
queries the actual texture so we'll refetch the format it
actually used */
format = _cogl_texture_get_format (tex);
tex_2ds->internal_format = format;
/* Create slice arrays */
tex_2ds->slice_x_spans =
g_array_sized_new (FALSE, FALSE, sizeof (CoglSpan), 1);
tex_2ds->slice_y_spans =
g_array_sized_new (FALSE, FALSE, sizeof (CoglSpan), 1);
tex_2ds->slice_textures =
g_array_sized_new (FALSE, FALSE, sizeof (CoglTexture2D *), 1);
/* Store info for a single slice */
x_span.start = 0;
x_span.size = gl_width;
x_span.waste = x_pot_waste;
g_array_append_val (tex_2ds->slice_x_spans, x_span);
y_span.start = 0;
y_span.size = gl_height;
y_span.waste = y_pot_waste;
g_array_append_val (tex_2ds->slice_y_spans, y_span);
g_array_append_val (tex_2ds->slice_textures, tex_2d);
_cogl_texture_set_allocated (tex,
format,
tex->width,
tex->height);
return TRUE;
}
static CoglBool
_cogl_texture_2d_sliced_allocate (CoglTexture *tex,
CoglError **error)
{
CoglTexture2DSliced *tex_2ds = COGL_TEXTURE_2D_SLICED (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_2ds, loader, error);
case COGL_TEXTURE_SOURCE_TYPE_BITMAP:
return allocate_from_bitmap (tex_2ds, loader, error);
case COGL_TEXTURE_SOURCE_TYPE_GL_FOREIGN:
return allocate_from_gl_foreign (tex_2ds, loader, error);
default:
break;
}
g_return_val_if_reached (FALSE);
}
static CoglBool
_cogl_texture_2d_sliced_is_foreign (CoglTexture *tex)
{
CoglTexture2DSliced *tex_2ds = COGL_TEXTURE_2D_SLICED (tex);
CoglTexture2D *slice_tex;
/* Make sure slices were created */
if (tex_2ds->slice_textures == NULL)
return FALSE;
/* Pass the call on to the first slice */
slice_tex = g_array_index (tex_2ds->slice_textures, CoglTexture2D *, 0);
return _cogl_texture_is_foreign (COGL_TEXTURE (slice_tex));
}
static int
_cogl_texture_2d_sliced_get_max_waste (CoglTexture *tex)
{
CoglTexture2DSliced *tex_2ds = COGL_TEXTURE_2D_SLICED (tex);
return tex_2ds->max_waste;
}
static CoglBool
_cogl_texture_2d_sliced_is_sliced (CoglTexture *tex)
{
CoglTexture2DSliced *tex_2ds = COGL_TEXTURE_2D_SLICED (tex);
/* It's only after allocating a sliced texture that we will know
* whether it really needed to be sliced... */
if (!tex->allocated)
cogl_texture_allocate (tex, NULL);
if (tex_2ds->slice_x_spans->len != 1 ||
tex_2ds->slice_y_spans->len != 1)
return TRUE;
else
return FALSE;
}
static CoglBool
_cogl_texture_2d_sliced_can_hardware_repeat (CoglTexture *tex)
{
CoglTexture2DSliced *tex_2ds = COGL_TEXTURE_2D_SLICED (tex);
CoglTexture2D *slice_tex;
CoglSpan *x_span;
CoglSpan *y_span;
/* If there's more than one texture then we can't hardware repeat */
if (tex_2ds->slice_textures->len != 1)
return FALSE;
/* If there's any waste then we can't hardware repeat */
x_span = &g_array_index (tex_2ds->slice_x_spans, CoglSpan, 0);
y_span = &g_array_index (tex_2ds->slice_y_spans, CoglSpan, 0);
if (x_span->waste > 0 || y_span->waste > 0)
return FALSE;
/* Otherwise pass the query on to the single slice texture */
slice_tex = g_array_index (tex_2ds->slice_textures, CoglTexture2D *, 0);
return _cogl_texture_can_hardware_repeat (COGL_TEXTURE (slice_tex));
}
static void
_cogl_texture_2d_sliced_transform_coords_to_gl (CoglTexture *tex,
float *s,
float *t)
{
CoglTexture2DSliced *tex_2ds = COGL_TEXTURE_2D_SLICED (tex);
CoglSpan *x_span;
CoglSpan *y_span;
CoglTexture2D *slice_tex;
g_assert (!_cogl_texture_2d_sliced_is_sliced (tex));
/* Don't include the waste in the texture coordinates */
x_span = &g_array_index (tex_2ds->slice_x_spans, CoglSpan, 0);
y_span = &g_array_index (tex_2ds->slice_y_spans, CoglSpan, 0);
*s *= tex->width / (float)x_span->size;
*t *= tex->height / (float)y_span->size;
/* Let the child texture further transform the coords */
slice_tex = g_array_index (tex_2ds->slice_textures, CoglTexture2D *, 0);
_cogl_texture_transform_coords_to_gl (COGL_TEXTURE (slice_tex), s, t);
}
static CoglTransformResult
_cogl_texture_2d_sliced_transform_quad_coords_to_gl (CoglTexture *tex,
float *coords)
{
CoglBool need_repeat = FALSE;
int i;
/* This is a bit lazy - in the case where the quad lies entirely
* within a single slice we could avoid the fallback. But that
* could likely lead to visual inconsistency if the fallback involves
* dropping layers, so this might be the right thing to do anyways.
*/
if (_cogl_texture_2d_sliced_is_sliced (tex))
return COGL_TRANSFORM_SOFTWARE_REPEAT;
for (i = 0; i < 4; i++)
if (coords[i] < 0.0f || coords[i] > 1.0f)
need_repeat = TRUE;
if (need_repeat && !_cogl_texture_2d_sliced_can_hardware_repeat (tex))
return COGL_TRANSFORM_SOFTWARE_REPEAT;
_cogl_texture_2d_sliced_transform_coords_to_gl (tex, coords + 0, coords + 1);
_cogl_texture_2d_sliced_transform_coords_to_gl (tex, coords + 2, coords + 3);
return (need_repeat
? COGL_TRANSFORM_HARDWARE_REPEAT : COGL_TRANSFORM_NO_REPEAT);
}
static CoglBool
_cogl_texture_2d_sliced_get_gl_texture (CoglTexture *tex,
GLuint *out_gl_handle,
GLenum *out_gl_target)
{
CoglTexture2DSliced *tex_2ds = COGL_TEXTURE_2D_SLICED (tex);
CoglTexture2D *slice_tex;
if (tex_2ds->slice_textures == NULL)
return FALSE;
if (tex_2ds->slice_textures->len < 1)
return FALSE;
slice_tex = g_array_index (tex_2ds->slice_textures, CoglTexture2D *, 0);
return cogl_texture_get_gl_texture (COGL_TEXTURE (slice_tex),
out_gl_handle, out_gl_target);
}
static void
_cogl_texture_2d_sliced_gl_flush_legacy_texobj_filters (CoglTexture *tex,
GLenum min_filter,
GLenum mag_filter)
{
CoglTexture2DSliced *tex_2ds = COGL_TEXTURE_2D_SLICED (tex);
CoglTexture2D *slice_tex;
int i;
_COGL_RETURN_IF_FAIL (tex_2ds->slice_textures != NULL);
/* Apply new filters to every slice. The slice texture itself should
cache the value and avoid resubmitting the same filter value to
GL */
for (i = 0; i < tex_2ds->slice_textures->len; i++)
{
slice_tex = g_array_index (tex_2ds->slice_textures, CoglTexture2D *, i);
_cogl_texture_gl_flush_legacy_texobj_filters (COGL_TEXTURE (slice_tex),
min_filter, mag_filter);
}
}
static void
_cogl_texture_2d_sliced_pre_paint (CoglTexture *tex,
CoglTexturePrePaintFlags flags)
{
CoglTexture2DSliced *tex_2ds = COGL_TEXTURE_2D_SLICED (tex);
int i;
_COGL_RETURN_IF_FAIL (tex_2ds->slice_textures != NULL);
/* Pass the pre-paint on to every slice */
for (i = 0; i < tex_2ds->slice_textures->len; i++)
{
CoglTexture2D *slice_tex = g_array_index (tex_2ds->slice_textures,
CoglTexture2D *, i);
_cogl_texture_pre_paint (COGL_TEXTURE (slice_tex), flags);
}
}
static void
_cogl_texture_2d_sliced_ensure_non_quad_rendering (CoglTexture *tex)
{
CoglTexture2DSliced *tex_2ds = COGL_TEXTURE_2D_SLICED (tex);
int i;
_COGL_RETURN_IF_FAIL (tex_2ds->slice_textures != NULL);
/* Pass the call on to every slice */
for (i = 0; i < tex_2ds->slice_textures->len; i++)
{
CoglTexture2D *slice_tex = g_array_index (tex_2ds->slice_textures,
CoglTexture2D *, i);
_cogl_texture_ensure_non_quad_rendering (COGL_TEXTURE (slice_tex));
}
}
static CoglBool
_cogl_texture_2d_sliced_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)
{
CoglTexture2DSliced *tex_2ds = COGL_TEXTURE_2D_SLICED (tex);
CoglBitmap *upload_bmp;
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)
return FALSE;
status = _cogl_texture_2d_sliced_upload_subregion (tex_2ds,
src_x, src_y,
dst_x, dst_y,
dst_width, dst_height,
upload_bmp,
error);
cogl_object_unref (upload_bmp);
return status;
}
static CoglPixelFormat
_cogl_texture_2d_sliced_get_format (CoglTexture *tex)
{
CoglTexture2DSliced *tex_2ds = COGL_TEXTURE_2D_SLICED (tex);
return tex_2ds->internal_format;
}
static GLenum
_cogl_texture_2d_sliced_get_gl_format (CoglTexture *tex)
{
CoglTexture2DSliced *tex_2ds = COGL_TEXTURE_2D_SLICED (tex);
CoglTexture2D *slice_tex;
/* Assert that we've allocated our slices at this point */
cogl_texture_allocate (tex, NULL); /* (abort on error) */
/* Pass the call on to the first slice */
slice_tex = g_array_index (tex_2ds->slice_textures, CoglTexture2D *, 0);
return _cogl_texture_gl_get_format (COGL_TEXTURE (slice_tex));
}
static CoglTextureType
_cogl_texture_2d_sliced_get_type (CoglTexture *tex)
{
return COGL_TEXTURE_TYPE_2D;
}
static const CoglTextureVtable
cogl_texture_2d_sliced_vtable =
{
FALSE, /* not primitive */
_cogl_texture_2d_sliced_allocate,
_cogl_texture_2d_sliced_set_region,
NULL, /* get_data */
_cogl_texture_2d_sliced_foreach_sub_texture_in_region,
_cogl_texture_2d_sliced_get_max_waste,
_cogl_texture_2d_sliced_is_sliced,
_cogl_texture_2d_sliced_can_hardware_repeat,
_cogl_texture_2d_sliced_transform_coords_to_gl,
_cogl_texture_2d_sliced_transform_quad_coords_to_gl,
_cogl_texture_2d_sliced_get_gl_texture,
_cogl_texture_2d_sliced_gl_flush_legacy_texobj_filters,
_cogl_texture_2d_sliced_pre_paint,
_cogl_texture_2d_sliced_ensure_non_quad_rendering,
_cogl_texture_2d_sliced_gl_flush_legacy_texobj_wrap_modes,
_cogl_texture_2d_sliced_get_format,
_cogl_texture_2d_sliced_get_gl_format,
_cogl_texture_2d_sliced_get_type,
_cogl_texture_2d_sliced_is_foreign,
NULL /* set_auto_mipmap */
};
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