def test_SDL_CreateRGBSurfaceWithFormatFrom(self):
for buf, bpp, pitch, masks, fmt in rgba_pixelations_16x16:
if bpp == 32:
arflag = "I"
elif bpp == 16:
arflag = "H"
bytebuf = CTypesView(array.array(arflag, buf))
bufptr = cast(bytebuf.to_bytes(), POINTER(Uint8))
sf = surface.SDL_CreateRGBSurfaceWithFormatFrom(
bufptr, 16, 16, bpp, pitch, fmt)
self.assertIsInstance(sf.contents, surface.SDL_Surface)
surface.SDL_FreeSurface(sf)
def test_SDL_ConvertPixels(self):
for buf, bpp, pitch, masks, fmt in rgba_pixelations_16x16:
bytecount = bpp // 8
arflag = None
if bpp == 32:
arflag = "I"
elif bpp == 16:
arflag = "H"
src = CTypesView(array.array(arflag, buf), bytecount)
srcp = cast(src.to_bytes(), POINTER(Uint8))
dst = (Uint8 * len(src))()
dstp = cast(dst, POINTER(Uint8))
ret = surface.SDL_ConvertPixels(16, 16, fmt, srcp, 16 * bytecount,
fmt, dstp, 16 * bytecount)
self.assertEqual(ret, 0)
for index, val in enumerate(dst):
self.assertEqual(val, src.view[index])
def test_SDL_BlitSurface(self):
bpp = 32
w, h = 10, 10
# no alpha to prevent blending
masks = (0xFF000000, 0x00FF0000, 0x0000FF00, 0x00000000)
dest = surface.SDL_CreateRGBSurface(0, w, h, bpp, masks[0], masks[1],
masks[2], masks[3])
pixelsize = h * dest.contents.pitch
rowlen = dest.contents.pitch // 4
sources = []
for width, height in blitsizes:
src = surface.SDL_CreateRGBSurface(0, width, height, bpp, masks[0],
masks[1], masks[2], masks[3])
surface.SDL_FillRect(src, None, 0xFFFFFFFF) # fill with white
sources.append(src)
for src in sources:
for pos in blitpositions:
drect = pos.__copy__()
surface.SDL_FillRect(dest, None, 0x0) # fill with black
surface.SDL_BlitSurface(src, None, dest, drect)
buf = cast(dest.contents.pixels, POINTER(Uint8 * pixelsize))
pbuf = CTypesView(buf.contents, itemsize=1, objsize=pixelsize)
iview = pbuf.to_uint32()
pw = drect.x + drect.w
ph = drect.y + drect.h
for y in range(dest.contents.h):
for x in range(dest.contents.w):
col = iview[y * rowlen + x]
if y >= drect.y and y < ph and \
x >= drect.x and x < pw:
self.assertEqual(col,
0xFFFFFFFF,
msg="""color
mismatch at %d,%d for %s: %d != %d""" % (y, x, pos, col, 0xFFFFFFFF))
else:
self.assertEqual(col,
0x0,
msg="""color mismatch
at %d,%d for %s: %d != %d""" % (y, x, pos, col, 0x0))
while len(sources) > 0:
sf = sources.pop()
surface.SDL_FreeSurface(sf)
surface.SDL_FreeSurface(dest)