static void
general_composite_rect (pixman_implementation_t *imp,
pixman_composite_info_t *info)
{
PIXMAN_COMPOSITE_ARGS (info);
uint8_t stack_scanline_buffer[3 * SCANLINE_BUFFER_LENGTH];
uint8_t *scanline_buffer = (uint8_t *) stack_scanline_buffer;
uint8_t *src_buffer, *mask_buffer, *dest_buffer;
pixman_iter_t src_iter, mask_iter, dest_iter;
pixman_combine_32_func_t compose;
pixman_bool_t component_alpha;
iter_flags_t width_flag, src_iter_flags;
int Bpp;
int i;
if ((src_image->common.flags & FAST_PATH_NARROW_FORMAT) &&
(!mask_image || mask_image->common.flags & FAST_PATH_NARROW_FORMAT) &&
(dest_image->common.flags & FAST_PATH_NARROW_FORMAT) &&
!(operator_needs_division (op)))
{
width_flag = ITER_NARROW;
Bpp = 4;
}
else
{
width_flag = ITER_WIDE;
Bpp = 16;
}
#define ALIGN(addr) \
((uint8_t *)((((uintptr_t)(addr)) + 15) & (~15)))
src_buffer = ALIGN (scanline_buffer);
mask_buffer = ALIGN (src_buffer + width * Bpp);
dest_buffer = ALIGN (mask_buffer + width * Bpp);
if (ALIGN (dest_buffer + width * Bpp) >
scanline_buffer + sizeof (stack_scanline_buffer))
{
scanline_buffer = pixman_malloc_ab_plus_c (width, Bpp * 3, 32 * 3);
if (!scanline_buffer)
return;
src_buffer = ALIGN (scanline_buffer);
mask_buffer = ALIGN (src_buffer + width * Bpp);
dest_buffer = ALIGN (mask_buffer + width * Bpp);
}
if (width_flag == ITER_WIDE)
{
/* To make sure there aren't any NANs in the buffers */
memset (src_buffer, 0, width * Bpp);
memset (mask_buffer, 0, width * Bpp);
memset (dest_buffer, 0, width * Bpp);
}
/* src iter */
src_iter_flags = width_flag | op_flags[op].src | ITER_SRC;
_pixman_implementation_iter_init (imp->toplevel, &src_iter, src_image,
src_x, src_y, width, height,
src_buffer, src_iter_flags,
info->src_flags);
/* mask iter */
if ((src_iter_flags & (ITER_IGNORE_ALPHA | ITER_IGNORE_RGB)) ==
(ITER_IGNORE_ALPHA | ITER_IGNORE_RGB))
{
/* If it doesn't matter what the source is, then it doesn't matter
* what the mask is
*/
mask_image = NULL;
}
component_alpha = mask_image && mask_image->common.component_alpha;
_pixman_implementation_iter_init (
imp->toplevel, &mask_iter,
mask_image, mask_x, mask_y, width, height, mask_buffer,
ITER_SRC | width_flag | (component_alpha? 0 : ITER_IGNORE_RGB),
info->mask_flags);
/* dest iter */
_pixman_implementation_iter_init (
imp->toplevel, &dest_iter, dest_image, dest_x, dest_y, width, height,
dest_buffer, ITER_DEST | width_flag | op_flags[op].dst, info->dest_flags);
compose = _pixman_implementation_lookup_combiner (
imp->toplevel, op, component_alpha, width_flag != ITER_WIDE);
for (i = 0; i < height; ++i)
{
uint32_t *s, *m, *d;
m = mask_iter.get_scanline (&mask_iter, NULL);
s = src_iter.get_scanline (&src_iter, m);
d = dest_iter.get_scanline (&dest_iter, NULL);
compose (imp->toplevel, op, d, s, m, width);
dest_iter.write_back (&dest_iter);
}
if (src_iter.fini)
src_iter.fini (&src_iter);
if (mask_iter.fini)
mask_iter.fini (&mask_iter);
if (dest_iter.fini)
dest_iter.fini (&dest_iter);
if (scanline_buffer != (uint8_t *) stack_scanline_buffer)
free (scanline_buffer);
}
static void
general_composite_rect (pixman_implementation_t *imp,
pixman_composite_info_t *info)
{
PIXMAN_COMPOSITE_ARGS (info);
uint64_t stack_scanline_buffer[(SCANLINE_BUFFER_LENGTH * 3 + 7) / 8];
uint8_t *scanline_buffer = (uint8_t *) stack_scanline_buffer;
uint8_t *src_buffer, *mask_buffer, *dest_buffer;
pixman_iter_t src_iter, mask_iter, dest_iter;
pixman_combine_32_func_t compose;
pixman_bool_t component_alpha;
iter_flags_t narrow, src_flags;
iter_flags_t rgb16;
int Bpp;
int i;
if ((src_image->common.flags & FAST_PATH_NARROW_FORMAT) &&
(!mask_image || mask_image->common.flags & FAST_PATH_NARROW_FORMAT) &&
(dest_image->common.flags & FAST_PATH_NARROW_FORMAT))
{
narrow = ITER_NARROW;
Bpp = 4;
}
else
{
narrow = 0;
Bpp = 8;
}
// XXX: This special casing is bad. Ideally, we'd keep the general code general perhaps
// by having it deal more specifically with different intermediate formats
if (
(dest_image->common.flags & FAST_PATH_16_FORMAT && (src_image->type == LINEAR || src_image->type == RADIAL)) &&
( op == PIXMAN_OP_SRC ||
(op == PIXMAN_OP_OVER && (src_image->common.flags & FAST_PATH_IS_OPAQUE))
)
) {
rgb16 = ITER_16;
} else {
rgb16 = 0;
}
if (width * Bpp > SCANLINE_BUFFER_LENGTH)
{
scanline_buffer = pixman_malloc_abc (width, 3, Bpp);
if (!scanline_buffer)
return;
}
src_buffer = scanline_buffer;
mask_buffer = src_buffer + width * Bpp;
dest_buffer = mask_buffer + width * Bpp;
/* src iter */
src_flags = narrow | op_flags[op].src | rgb16;
_pixman_implementation_src_iter_init (imp->toplevel, &src_iter, src_image,
src_x, src_y, width, height,
src_buffer, src_flags);
/* mask iter */
if ((src_flags & (ITER_IGNORE_ALPHA | ITER_IGNORE_RGB)) ==
(ITER_IGNORE_ALPHA | ITER_IGNORE_RGB))
{
/* If it doesn't matter what the source is, then it doesn't matter
* what the mask is
*/
mask_image = NULL;
}
component_alpha =
mask_image &&
mask_image->common.type == BITS &&
mask_image->common.component_alpha &&
PIXMAN_FORMAT_RGB (mask_image->bits.format);
_pixman_implementation_src_iter_init (
imp->toplevel, &mask_iter, mask_image, mask_x, mask_y, width, height,
mask_buffer, narrow | (component_alpha? 0 : ITER_IGNORE_RGB));
/* dest iter */
_pixman_implementation_dest_iter_init (
imp->toplevel, &dest_iter, dest_image, dest_x, dest_y, width, height,
dest_buffer, narrow | op_flags[op].dst | rgb16);
compose = _pixman_implementation_lookup_combiner (
imp->toplevel, op, component_alpha, narrow, !!rgb16);
if (!compose)
return;
for (i = 0; i < height; ++i)
{
uint32_t *s, *m, *d;
m = mask_iter.get_scanline (&mask_iter, NULL);
s = src_iter.get_scanline (&src_iter, m);
d = dest_iter.get_scanline (&dest_iter, NULL);
compose (imp->toplevel, op, d, s, m, width);
dest_iter.write_back (&dest_iter);
}
if (scanline_buffer != (uint8_t *) stack_scanline_buffer)
free (scanline_buffer);
}
static void
general_composite_rect (pixman_implementation_t *imp,
pixman_composite_info_t *info)
{
PIXMAN_COMPOSITE_ARGS (info);
uint64_t stack_scanline_buffer[(SCANLINE_BUFFER_LENGTH * 3 + 7) / 8];
uint8_t *scanline_buffer = (uint8_t *) stack_scanline_buffer;
uint8_t *src_buffer, *mask_buffer, *dest_buffer;
pixman_iter_t src_iter, mask_iter, dest_iter;
pixman_combine_32_func_t compose;
pixman_bool_t component_alpha;
iter_flags_t narrow, src_iter_flags;
int Bpp;
int i;
if ((src_image->common.flags & FAST_PATH_NARROW_FORMAT) &&
(!mask_image || mask_image->common.flags & FAST_PATH_NARROW_FORMAT) &&
(dest_image->common.flags & FAST_PATH_NARROW_FORMAT))
{
narrow = ITER_NARROW;
Bpp = 4;
}
else
{
narrow = 0;
Bpp = 8;
}
if (width * Bpp > SCANLINE_BUFFER_LENGTH)
{
scanline_buffer = pixman_malloc_abc (width, 3, Bpp);
if (!scanline_buffer)
return;
}
src_buffer = scanline_buffer;
mask_buffer = src_buffer + width * Bpp;
dest_buffer = mask_buffer + width * Bpp;
/* src iter */
src_iter_flags = narrow | op_flags[op].src;
_pixman_implementation_src_iter_init (imp->toplevel, &src_iter, src_image,
src_x, src_y, width, height,
src_buffer, src_iter_flags, info->src_flags);
/* mask iter */
if ((src_iter_flags & (ITER_IGNORE_ALPHA | ITER_IGNORE_RGB)) ==
(ITER_IGNORE_ALPHA | ITER_IGNORE_RGB))
{
/* If it doesn't matter what the source is, then it doesn't matter
* what the mask is
*/
mask_image = NULL;
}
component_alpha =
mask_image &&
mask_image->common.type == BITS &&
mask_image->common.component_alpha &&
PIXMAN_FORMAT_RGB (mask_image->bits.format);
_pixman_implementation_src_iter_init (
imp->toplevel, &mask_iter, mask_image, mask_x, mask_y, width, height,
mask_buffer, narrow | (component_alpha? 0 : ITER_IGNORE_RGB), info->mask_flags);
/* dest iter */
_pixman_implementation_dest_iter_init (
imp->toplevel, &dest_iter, dest_image, dest_x, dest_y, width, height,
dest_buffer, narrow | op_flags[op].dst, info->dest_flags);
compose = _pixman_implementation_lookup_combiner (
imp->toplevel, op, component_alpha, narrow);
if (!compose)
return;
for (i = 0; i < height; ++i)
{
uint32_t *s, *m, *d;
m = mask_iter.get_scanline (&mask_iter, NULL);
s = src_iter.get_scanline (&src_iter, m);
d = dest_iter.get_scanline (&dest_iter, NULL);
compose (imp->toplevel, op, d, s, m, width);
dest_iter.write_back (&dest_iter);
}
if (scanline_buffer != (uint8_t *) stack_scanline_buffer)
free (scanline_buffer);
}