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mutter/cogl/cogl-texture-2d-sliced.c
Robert Bragg 061240ef2a 2d-sliced: add _new_from_file/data/bitmap apis 
This adds cogl_texture_2d_sliced_new_from_bitmap/data/file apis in
preparation for removing the cogl_texture_new_from_bitmap/file apis that
are considered a bit too magic, but we don't want to loose the
convenience they have.

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit 218da8e1349d7658f45c6933b9736c0d32941b8b)

Conflicts:
	cogl/cogl-auto-texture.c
2013-07-29 16:49:01 +01:00

1477 lines
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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 CoglBool
_cogl_texture_2d_sliced_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");
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
_cogl_texture_2d_sliced_slices_free (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);
}
}
static void
_cogl_texture_2d_sliced_free (CoglTexture2DSliced *tex_2ds)
{
_cogl_texture_2d_sliced_slices_free (tex_2ds);
if (tex_2ds->slice_x_spans != NULL)
g_array_free (tex_2ds->slice_x_spans, TRUE);
if (tex_2ds->slice_y_spans != NULL)
g_array_free (tex_2ds->slice_y_spans, TRUE);
/* Chain up */
_cogl_texture_free (COGL_TEXTURE (tex_2ds));
}
static CoglBool
_cogl_texture_2d_sliced_init_base (CoglContext *ctx,
CoglTexture2DSliced *tex_2ds,
int width,
int height,
int max_waste,
CoglPixelFormat internal_format,
CoglError **error)
{
CoglTexture *tex = COGL_TEXTURE (tex_2ds);
_cogl_texture_init (tex, ctx, width, height, &cogl_texture_2d_sliced_vtable);
tex_2ds->max_waste = max_waste;
tex_2ds->internal_format = internal_format;
return _cogl_texture_2d_sliced_setup_spans (ctx, tex_2ds,
width, height,
max_waste,
internal_format,
error);
}
CoglTexture2DSliced *
cogl_texture_2d_sliced_new_with_size (CoglContext *ctx,
int width,
int height,
int max_waste,
CoglPixelFormat internal_format)
{
CoglTexture2DSliced *tex_2ds;
CoglError *ignore_error = NULL;
/* Since no data, we need some internal format */
if (internal_format == COGL_PIXEL_FORMAT_ANY)
internal_format = COGL_PIXEL_FORMAT_RGBA_8888_PRE;
/* Init texture with empty bitmap */
tex_2ds = g_new0 (CoglTexture2DSliced, 1);
if (!_cogl_texture_2d_sliced_init_base (ctx,
tex_2ds,
width, height,
max_waste,
internal_format,
&ignore_error))
{
/* In this case we failed to find any suitable slicing geometry
* for the given texture size.
*
* We don't need to do anything with the error here since it
* will be picked up on later when trying to allocate the
* texture.
*/
cogl_error_free (ignore_error);
}
/* NB: We need to be sure that cogl_texture_is_sliced() will work
* correctly before returning since
* cogl_framebuffer_allocate() uses this api to determine
* if a texture can be rendered to which may be before the
* slices have been allocated.
*/
return _cogl_texture_2d_sliced_object_new (tex_2ds);
}
static CoglBool
_cogl_texture_2d_sliced_allocate (CoglTexture *tex,
CoglError **error)
{
CoglContext *ctx = tex->context;
CoglTexture2DSliced *tex_2ds = COGL_TEXTURE_2D_SLICED (tex);
int n_x_slices;
int n_y_slices;
int n_slices;
int x, y;
CoglPixelFormat format = tex_2ds->internal_format;
CoglSpan *x_span;
CoglSpan *y_span;
if (!tex_2ds->slice_x_spans || !tex_2ds->slice_y_spans)
{
_cogl_set_error (error,
COGL_TEXTURE_ERROR,
COGL_TEXTURE_ERROR_SIZE,
"Couldn't find suitable slicing geometry "
"for given size");
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,
format));
g_array_append_val (tex_2ds->slice_textures, slice);
if (!cogl_texture_allocate (slice, error))
{
_cogl_texture_2d_sliced_slices_free (tex_2ds);
return FALSE;
}
}
}
return TRUE;
}
CoglTexture2DSliced *
_cogl_texture_2d_sliced_new_from_bitmap (CoglBitmap *bmp,
int max_waste,
CoglPixelFormat internal_format,
CoglBool can_convert_in_place,
CoglError **error)
{
CoglContext *ctx;
CoglTexture2DSliced *tex_2ds;
CoglBitmap *upload_bmp;
int width, height;
_COGL_RETURN_VAL_IF_FAIL (cogl_is_bitmap (bmp), NULL);
ctx = _cogl_bitmap_get_context (bmp);
width = cogl_bitmap_get_width (bmp);
height = cogl_bitmap_get_height (bmp);
/* Create new texture and fill with loaded data */
tex_2ds = g_new0 (CoglTexture2DSliced, 1);
internal_format =
_cogl_texture_determine_internal_format (cogl_bitmap_get_format (bmp),
internal_format);
upload_bmp = _cogl_bitmap_convert_for_upload (bmp,
internal_format,
can_convert_in_place,
error);
if (upload_bmp == NULL)
{
_cogl_texture_2d_sliced_free (tex_2ds);
return NULL;
}
/* NB: we may fail to find any suitable slicing geometry for the
* given texture size. */
if (!_cogl_texture_2d_sliced_init_base (ctx,
tex_2ds,
width, height,
max_waste,
internal_format,
error))
goto error;
if (!cogl_texture_allocate (COGL_TEXTURE (tex_2ds), error))
goto error;
if (!_cogl_texture_2d_sliced_upload_bitmap (tex_2ds,
upload_bmp,
error))
goto error;
cogl_object_unref (upload_bmp);
return _cogl_texture_2d_sliced_object_new (tex_2ds);
error:
cogl_object_unref (upload_bmp);
_cogl_texture_2d_sliced_free (tex_2ds);
return NULL;
}
CoglTexture2DSliced *
cogl_texture_2d_sliced_new_from_bitmap (CoglBitmap *bmp,
int max_waste,
CoglPixelFormat internal_format,
CoglError **error)
{
return _cogl_texture_2d_sliced_new_from_bitmap (bmp,
max_waste,
internal_format,
FALSE,
error);
}
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,
CoglError **error)
{
/* NOTE: width, height and internal format are not queriable
* in GLES, hence such a function prototype.
*/
int gl_width = 0;
int gl_height = 0;
CoglTexture2DSliced *tex_2ds;
CoglTexture *tex;
CoglSpan x_span;
CoglSpan y_span;
CoglTexture2D *tex_2d;
/* 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);
gl_width = width + x_pot_waste;
gl_height = height + y_pot_waste;
/* Validate pot waste */
if (x_pot_waste < 0 || x_pot_waste >= width ||
y_pot_waste < 0 || y_pot_waste >= height)
return NULL;
tex_2d = cogl_texture_2d_new_from_foreign (ctx,
gl_target,
gl_width,
gl_height,
format,
error);
if (!tex_2d)
return NULL;
/* 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 (COGL_TEXTURE (tex_2d));
/* Create new texture */
tex_2ds = g_new0 (CoglTexture2DSliced, 1);
tex = COGL_TEXTURE (tex_2ds);
_cogl_texture_init (tex, ctx, gl_width, gl_height,
&cogl_texture_2d_sliced_vtable);
tex_2ds->max_waste = 0;
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 (COGL_TEXTURE (tex_2ds), TRUE);
return _cogl_texture_2d_sliced_object_new (tex_2ds);
}
CoglTexture2DSliced *
cogl_texture_2d_sliced_new_from_data (CoglContext *ctx,
int width,
int height,
int max_waste,
CoglPixelFormat format,
CoglPixelFormat internal_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,
internal_format,
error);
cogl_object_unref (bmp);
return tex_2ds;
}
CoglTexture2DSliced *
cogl_texture_2d_sliced_new_from_file (CoglContext *ctx,
const char *filename,
int max_waste,
CoglPixelFormat internal_format,
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,
internal_format,
TRUE, /* can convert in-place */
error);
cogl_object_unref (bmp);
return tex_2ds;
}
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 possible that we failed to calculate valid slicing geometry
* when initializing the texture due to the max_waste size and in
* this case we report that the texture is not sliced.
*
* In this case though we know that we will be throwing an error
* when this texture is later allocated so it shouldn't really
* matter what we report here since the texture won't be used in the
* end.
*/
if (!tex_2ds->slice_x_spans || !tex_2ds->slice_y_spans)
return FALSE;
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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