def test_SDL_RenderDrawPoint(self):
points = ((-4, -3), (-4, 3), (4, -3), (0, 0), (1, 1), (10, 10),
(99, 99), (4, 22), (57, 88), (45, 15), (100, 100))
r, g, b, a = 0xAA, 0xBB, 0xCC, 0xDD
w, h = 100, 100
sf = surface.SDL_CreateRGBSurface(0, w, h, 32, 0xFF000000, 0x00FF0000,
0x0000FF00, 0x000000FF)
color = pixels.SDL_MapRGBA(sf.contents.format, r, g, b, a)
renderer = render.SDL_CreateSoftwareRenderer(sf)
self.assertIsInstance(renderer.contents, render.SDL_Renderer)
ret = render.SDL_SetRenderDrawColor(renderer, r, g, b, a)
self.assertEqual(ret, 0)
for x, y in points:
ret = render.SDL_RenderDrawPoint(renderer, x, y)
self.assertEqual(ret, 0)
render.SDL_RenderPresent(renderer)
view = PixelView(sf.contents)
for x, y in points:
npx = max(x + 1, w)
npy = max(y + 1, h)
ppx = max(x - 1, 0)
ppy = max(y - 1, 0)
if x < 0 or x >= w or y < 0 or y >= h:
continue
self.assertEqual(hex(view[y][x]), hex(color))
if (npx, npy) not in points:
self.assertNotEqual(hex(view[npy][npx]), hex(color))
if (ppx, ppy) not in points:
self.assertNotEqual(hex(view[ppy][ppx]), hex(color))
render.SDL_DestroyRenderer(renderer)
del view
surface.SDL_FreeSurface(sf)
def test_SDL_RenderGetSetLogicalSize(self):
w, h = 100, 100
sf = surface.SDL_CreateRGBSurface(0, w, h, 32, 0xFF000000, 0x00FF0000,
0x0000FF00, 0x000000FF)
renderer = render.SDL_CreateSoftwareRenderer(sf)
view = PixelView(sf.contents)
magenta = 255, 0, 255, 255
green = 0, 255, 0, 255
magenta_int = sum(c << (i * 8)
for i, c in enumerate(reversed(magenta)))
green_int = sum(c << (i * 8) for i, c in enumerate(reversed(green)))
def clear_green():
ret = render.SDL_SetRenderDrawColor(renderer, green[0], green[1],
green[2], green[3])
self.assertEqual(ret, 0)
ret = render.SDL_RenderClear(renderer)
self.assertEqual(ret, 0)
def draw_magenta_pixel(x, y):
ret = render.SDL_SetRenderDrawColor(renderer, magenta[0],
magenta[1], magenta[2],
magenta[3])
self.assertEqual(ret, 0)
ret = render.SDL_RenderDrawPoint(renderer, x, y)
self.assertEqual(ret, 0)
# Test 1
# If we set the logical renderer size to 1 x 1, drawing a point
# at 0, 0 should have the same effect as filling the entire
# (square) window with magenta - no green should show through.
got_width, got_height = c_int(), c_int()
ret = render.SDL_RenderSetLogicalSize(renderer, 1, 1)
self.assertEqual(ret, 0)
render.SDL_RenderGetLogicalSize(renderer, byref(got_width),
byref(got_height))
self.assertEqual(got_width.value, 1)
self.assertEqual(got_height.value, 1)
clear_green()
draw_magenta_pixel(0, 0)
for x, y in itertools.product(range(w), range(h)):
self.assertEqual(view[y][x], magenta_int,
'No pixel should be green')
# Test 2
# Reset the logical size to the original target by using 0, 0
# only the first and last pixel should be magenta. The rest
# should be green.
got_width, got_height = c_int(), c_int()
ret = render.SDL_RenderSetLogicalSize(renderer, 0, 0)
self.assertEqual(ret, 0)
render.SDL_RenderGetLogicalSize(renderer, byref(got_width),
byref(got_height))
self.assertEqual(got_width.value, 0)
self.assertEqual(got_height.value, 0)
clear_green()
draw_magenta_pixel(0, 0)
draw_magenta_pixel(w - 1, h - 1)
for x, y in itertools.product(range(w), range(h)):
if (x, y) == (0, 0) or (x, y) == (w - 1, h - 1):
self.assertEqual(view[y][x], magenta_int,
'First and last pixel should be magenta')
else:
self.assertEqual(view[y][x], green_int,
'All other pixels should be green')
# Test 3
# Set the logical size to 1/10, making a logical pixel draw be
# 10 x 10 real pixel blocks.
got_width, got_height = c_int(), c_int()
ret = render.SDL_RenderSetLogicalSize(renderer, w // 10, h // 10)
self.assertEqual(ret, 0)
render.SDL_RenderGetLogicalSize(renderer, byref(got_width),
byref(got_height))
self.assertEqual(got_width.value, w // 10)
self.assertEqual(got_height.value, h // 10)
clear_green()
draw_magenta_pixel(0, 0)
for x, y in itertools.product(range(w), range(h)):
if x < 10 and y < 10:
self.assertEqual(
view[y][x], magenta_int,
'Top-left 10 x 10 pixel block should be magenta')
else:
self.assertEqual(view[y][x], green_int,
'All other pixels should be green')
render.SDL_DestroyRenderer(renderer)
surface.SDL_FreeSurface(sf)