def render_tile_scanlines():
feedback_counter = 0
for ty in range(render_ty, render_ty + render_th):
skip_rendering = False
if single_tile_pattern:
# optimization for simple background patterns
# e.g. solid color
if ty != first_row:
skip_rendering = True
for tx_rel in xrange(render_tw):
# render one tile
dst = arr[:, tx_rel * N:(tx_rel + 1) * N, :]
if not skip_rendering:
tx = render_tx + tx_rel
try:
surface.blit_tile_into(dst, alpha, tx, ty, **kwargs)
except Exception:
logger.exception("Failed to blit tile %r of %r",
(tx, ty), surface)
mypaintlib.tile_clear_rgba8(dst)
if feedback_cb and feedback_counter % TILES_PER_CALLBACK == 0:
feedback_cb()
feedback_counter += 1
# yield a numpy array of the scanline without padding
res = arr_xcrop
if ty == last_row:
res = res[:y + h - ty * N, :, :]
if ty == first_row:
res = res[y - render_ty * N:, :, :]
yield res
def blit_tile_into(self, dst, dst_has_alpha, tx, ty, mipmap_level=0):
# used mainly for saving (transparent PNG)
#assert dst_has_alpha is True
if self.mipmap_level < mipmap_level:
return self.mipmap.blit_tile_into(dst, dst_has_alpha, tx, ty,
mipmap_level)
assert dst.shape[2] == 4
if dst.dtype not in ('uint16', 'uint8'):
raise ValueError('Unsupported destination buffer type %r',
dst.dtype)
dst_is_uint16 = (dst.dtype == 'uint16')
with self.tile_request(tx, ty, readonly=True) as src:
if src is transparent_tile.rgba:
#dst[:] = 0 # <-- notably slower than memset()
if dst_is_uint16:
mypaintlib.tile_clear_rgba16(dst)
else:
mypaintlib.tile_clear_rgba8(dst)
else:
if dst_is_uint16:
# this will do memcpy, not worth to bother skipping the u channel
mypaintlib.tile_copy_rgba16_into_rgba16(src, dst)
else:
if dst_has_alpha:
mypaintlib.tile_convert_rgba16_to_rgba8(src, dst)
else:
mypaintlib.tile_convert_rgbu16_to_rgbu8(src, dst)
def blit_tile_into(self, dst, dst_has_alpha, tx, ty, mipmap_level=0):
# used mainly for saving (transparent PNG)
#assert dst_has_alpha is True
if self.mipmap_level < mipmap_level:
return self.mipmap.blit_tile_into(dst, dst_has_alpha, tx, ty, mipmap_level)
assert dst.shape[2] == 4
if dst.dtype not in ('uint16', 'uint8'):
raise ValueError('Unsupported destination buffer type %r', dst.dtype)
dst_is_uint16 = (dst.dtype == 'uint16')
with self.tile_request(tx, ty, readonly=True) as src:
if src is transparent_tile.rgba:
#dst[:] = 0 # <-- notably slower than memset()
if dst_is_uint16:
mypaintlib.tile_clear_rgba16(dst)
else:
mypaintlib.tile_clear_rgba8(dst)
else:
if dst_is_uint16:
# this will do memcpy, not worth to bother skipping the u channel
mypaintlib.tile_copy_rgba16_into_rgba16(src, dst)
else:
if dst_has_alpha:
mypaintlib.tile_convert_rgba16_to_rgba8(src, dst)
else:
mypaintlib.tile_convert_rgbu16_to_rgbu8(src, dst)
def render_tile_scanlines():
feedback_counter = 0
for ty in range(render_ty, render_ty+render_th):
skip_rendering = False
if single_tile_pattern:
# optimization for simple background patterns
# e.g. solid color
if ty != first_row:
skip_rendering = True
for tx_rel in xrange(render_tw):
# render one tile
dst = arr[:, tx_rel*N:(tx_rel+1)*N, :]
if not skip_rendering:
tx = render_tx + tx_rel
try:
surface.blit_tile_into(dst, alpha, tx, ty, **kwargs)
except Exception:
logger.exception("Failed to blit tile %r of %r",
(tx, ty), surface)
mypaintlib.tile_clear_rgba8(dst)
if feedback_cb and feedback_counter % TILES_PER_CALLBACK == 0:
feedback_cb()
feedback_counter += 1
# yield a numpy array of the scanline without padding
res = arr_xcrop
if ty == last_row:
res = res[:y+h-ty*N, :, :]
if ty == first_row:
res = res[y-render_ty*N:, :, :]
yield res
def blit_tile_into(self,
dst,
dst_has_alpha,
tx,
ty,
mipmap_level=0,
*args,
**kwargs):
"""Copy one tile from this object into a destination array
See lib.surface.TileBlittable for the parameters. This
implementation adds an extra param:
:param int mipmap_level: layer mipmap level to use
Used mainly for saving (transparent PNG).
"""
# assert dst_has_alpha is True
if self.mipmap_level < mipmap_level:
return self.mipmap.blit_tile_into(dst, dst_has_alpha, tx, ty,
mipmap_level)
assert dst.shape[2] == 4
if dst.dtype not in ('uint16', 'uint8'):
raise ValueError('Unsupported destination buffer type %r',
dst.dtype)
dst_is_uint16 = (dst.dtype == 'uint16')
with self.tile_request(tx, ty, readonly=True) as src:
if src is transparent_tile.rgba:
# dst[:] = 0 # <-- notably slower than memset()
if dst_is_uint16:
mypaintlib.tile_clear_rgba16(dst)
else:
mypaintlib.tile_clear_rgba8(dst)
else:
if dst_is_uint16:
# this will do memcpy, not worth to bother skipping
# the u channel
mypaintlib.tile_copy_rgba16_into_rgba16(src, dst)
else:
if dst_has_alpha:
mypaintlib.tile_convert_rgba16_to_rgba8(src, dst)
else:
mypaintlib.tile_convert_rgbu16_to_rgbu8(src, dst)
def blit_tile_into(self, dst, dst_has_alpha, tx, ty, mipmap_level=0,
*args, **kwargs):
"""Copy one tile from this object into a destination array
See lib.surface.TileBlittable for the parameters. This
implementation adds an extra param:
:param int mipmap_level: layer mipmap level to use
"""
# used mainly for saving (transparent PNG)
#assert dst_has_alpha is True
if self.mipmap_level < mipmap_level:
return self.mipmap.blit_tile_into(dst, dst_has_alpha, tx, ty, mipmap_level)
assert dst.shape[2] == 4
if dst.dtype not in ('uint16', 'uint8'):
raise ValueError('Unsupported destination buffer type %r', dst.dtype)
dst_is_uint16 = (dst.dtype == 'uint16')
with self.tile_request(tx, ty, readonly=True) as src:
if src is transparent_tile.rgba:
#dst[:] = 0 # <-- notably slower than memset()
if dst_is_uint16:
mypaintlib.tile_clear_rgba16(dst)
else:
mypaintlib.tile_clear_rgba8(dst)
else:
if dst_is_uint16:
# this will do memcpy, not worth to bother skipping the u channel
mypaintlib.tile_copy_rgba16_into_rgba16(src, dst)
else:
if dst_has_alpha:
mypaintlib.tile_convert_rgba16_to_rgba8(src, dst)
else:
mypaintlib.tile_convert_rgbu16_to_rgbu8(src, dst)
def scanline_strips_iter(surface,
rect,
alpha=False,
single_tile_pattern=False,
**kwargs):
"""Generate (render) scanline strips from a tile-blittable object
:param lib.surface.TileBlittable surface: Surface to iterate over
:param bool alpha: If true, write a PNG with alpha
:param bool single_tile_pattern: True if surface is a one tile only.
:param tuple \*\*kwargs: Passed to blit_tile_into.
The `alpha` parameter is passed to the surface's `blit_tile_into()`.
Rendering is skipped for all but the first line of single-tile patterns.
The scanline strips yielded by this generator are suitable for
feeding to a mypaintlib.ProgressivePNGWriter.
"""
# Sizes
x, y, w, h = rect
assert w > 0
assert h > 0
# calculate bounding box in full tiles
render_tx = x / N
render_ty = y / N
render_tw = (x + w - 1) / N - render_tx + 1
render_th = (y + h - 1) / N - render_ty + 1
# buffer for rendering one tile row at a time
arr = np.empty((N, render_tw * N, 4), 'uint8') # rgba or rgbu
# view into arr without the horizontal padding
arr_xcrop = arr[:, x - render_tx * N:x - render_tx * N + w, :]
first_row = render_ty
last_row = render_ty + render_th - 1
for ty in range(render_ty, render_ty + render_th):
skip_rendering = False
if single_tile_pattern:
# optimization for simple background patterns
# e.g. solid color
if ty != first_row:
skip_rendering = True
for tx_rel in xrange(render_tw):
# render one tile
dst = arr[:, tx_rel * N:(tx_rel + 1) * N, :]
if not skip_rendering:
tx = render_tx + tx_rel
try:
surface.blit_tile_into(dst, alpha, tx, ty, **kwargs)
except Exception:
logger.exception("Failed to blit tile %r of %r", (tx, ty),
surface)
mypaintlib.tile_clear_rgba8(dst)
# yield a numpy array of the scanline without padding
res = arr_xcrop
if ty == last_row:
res = res[:y + h - ty * N, :, :]
if ty == first_row:
res = res[y - render_ty * N:, :, :]
yield res
def scanline_strips_iter(surface, rect, alpha=False,
single_tile_pattern=False, **kwargs):
"""Generate (render) scanline strips from a tile-blittable object
:param lib.surface.TileBlittable surface: Surface to iterate over
:param bool alpha: If true, write a PNG with alpha
:param bool single_tile_pattern: True if surface is a one tile only.
:param tuple \*\*kwargs: Passed to blit_tile_into.
The `alpha` parameter is passed to the surface's `blit_tile_into()`.
Rendering is skipped for all but the first line of single-tile patterns.
The scanline strips yielded by this generator are suitable for
feeding to a mypaintlib.ProgressivePNGWriter.
"""
# Sizes
x, y, w, h = rect
assert w > 0
assert h > 0
# calculate bounding box in full tiles
render_tx = x/N
render_ty = y/N
render_tw = (x+w-1)/N - render_tx + 1
render_th = (y+h-1)/N - render_ty + 1
# buffer for rendering one tile row at a time
arr = numpy.empty((1*N, render_tw*N, 4), 'uint8') # rgba or rgbu
# view into arr without the horizontal padding
arr_xcrop = arr[:, x-render_tx*N:x-render_tx*N+w, :]
first_row = render_ty
last_row = render_ty+render_th-1
for ty in range(render_ty, render_ty+render_th):
skip_rendering = False
if single_tile_pattern:
# optimization for simple background patterns
# e.g. solid color
if ty != first_row:
skip_rendering = True
for tx_rel in xrange(render_tw):
# render one tile
dst = arr[:, tx_rel*N:(tx_rel+1)*N, :]
if not skip_rendering:
tx = render_tx + tx_rel
try:
surface.blit_tile_into(dst, alpha, tx, ty, **kwargs)
except Exception:
logger.exception("Failed to blit tile %r of %r",
(tx, ty), surface)
mypaintlib.tile_clear_rgba8(dst)
# yield a numpy array of the scanline without padding
res = arr_xcrop
if ty == last_row:
res = res[:y+h-ty*N, :, :]
if ty == first_row:
res = res[y-render_ty*N:, :, :]
yield res
