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if __name__ == '__main__':
import sys
import os
pkg_dir = os.path.split(os.path.abspath(__file__))[0]
parent_dir, pkg_name = os.path.split(pkg_dir)
is_pygame_pkg = (pkg_name == 'tests' and
os.path.split(parent_dir)[1] == 'pygame')
if not is_pygame_pkg:
sys.path.insert(0, parent_dir)
else:
is_pygame_pkg = __name__.startswith('pygame.tests.')
import unittest
import pygame
from pygame.locals import *
class BlitTest( unittest.TestCase ):
def test_SRCALPHA( self ):
""" SRCALPHA tests.
"""
#blend(s, 0, d) = d
s = pygame.Surface((1,1), SRCALPHA, 32)
s.fill((255, 255,255, 0))
d = pygame.Surface((1,1), SRCALPHA, 32)
d.fill((0, 0,255, 255))
s.blit(d, (0,0))
self.assertEqual(s.get_at((0,0)), d.get_at((0,0)) )
#blend(s, 255, d) = s
s = pygame.Surface((1,1), SRCALPHA, 32)
s.fill((123, 0, 0, 255))
s1 = pygame.Surface((1,1), SRCALPHA, 32)
s1.fill((123, 0, 0, 255))
d = pygame.Surface((1,1), SRCALPHA, 32)
d.fill((10, 0,0, 0))
s.blit(d, (0,0))
self.assertEqual(s.get_at((0,0)), s1.get_at((0,0)) )
#TODO: these should be true too.
#blend(0, sA, 0) = 0
#blend(255, sA, 255) = 255
#blend(s, sA, d) <= 255
def test_BLEND( self ):
""" BLEND_ tests.
"""
#test that it doesn't overflow, and that it is saturated.
s = pygame.Surface((1,1), SRCALPHA, 32)
s.fill((255, 255,255, 0))
d = pygame.Surface((1,1), SRCALPHA, 32)
d.fill((0, 0,255, 255))
s.blit(d, (0,0), None, BLEND_ADD)
#print "d %s" % (d.get_at((0,0)),)
#print s.get_at((0,0))
#self.assertEqual(s.get_at((0,0))[2], 255 )
#self.assertEqual(s.get_at((0,0))[3], 0 )
s.blit(d, (0,0), None, BLEND_RGBA_ADD)
#print s.get_at((0,0))
self.assertEqual(s.get_at((0,0))[3], 255 )
# test adding works.
s.fill((20, 255,255, 0))
d.fill((10, 0,255, 255))
s.blit(d, (0,0), None, BLEND_ADD)
self.assertEqual(s.get_at((0,0))[2], 255 )
# test subbing works.
s.fill((20, 255,255, 0))
d.fill((10, 0,255, 255))
s.blit(d, (0,0), None, BLEND_SUB)
self.assertEqual(s.get_at((0,0))[0], 10 )
# no overflow in sub blend.
s.fill((20, 255,255, 0))
d.fill((30, 0,255, 255))
s.blit(d, (0,0), None, BLEND_SUB)
self.assertEqual(s.get_at((0,0))[0], 0 )
def make_blit_list(self, num_surfs):
blit_list = []
for i in range(num_surfs):
dest = (i * 10, 0)
surf = pygame.Surface((10, 10), SRCALPHA, 32)
color = (i * 1, i * 1, i * 1)
surf.fill(color)
blit_list.append((surf, dest))
return blit_list
def test_blits(self):
NUM_SURFS = 255
PRINT_TIMING = 0
dst = pygame.Surface((NUM_SURFS * 10, 10), SRCALPHA, 32)
dst.fill((230, 230, 230))
blit_list = self.make_blit_list(NUM_SURFS)
def blits(blit_list):
for surface, dest in blit_list:
dst.blit(surface, dest)
from time import time
t0 = time()
results = blits(blit_list)
t1 = time()
if PRINT_TIMING:
print("python blits: %s" % (t1-t0))
dst.fill((230, 230, 230))
t0 = time()
results = dst.blits(blit_list)
t1 = time()
if PRINT_TIMING:
print("Surface.blits :%s" % (t1-t0))
# check if we blit all the different colors in the correct spots.
for i in range(NUM_SURFS):
color = (i * 1, i * 1, i * 1)
self.assertEqual(dst.get_at((i * 10, 0)), color)
self.assertEqual(dst.get_at(((i * 10) + 5, 5)), color)
self.assertEqual(len(results), NUM_SURFS)
t0 = time()
results = dst.blits(blit_list, doreturn = 0)
t1 = time()
if PRINT_TIMING:
print("Surface.blits doreturn=0: %s" % (t1-t0))
self.assertEqual(results, None)
t0 = time()
results = dst.blits(((surf, dest) for surf, dest in blit_list))
t1 = time()
if PRINT_TIMING:
print("Surface.blits generator: %s" % (t1-t0))
def test_blits_not_sequence(self):
dst = pygame.Surface((100, 10), SRCALPHA, 32)
self.assertRaises(ValueError, dst.blits, None)
def test_blits_wrong_length(self):
dst = pygame.Surface((100, 10), SRCALPHA, 32)
self.assertRaises(ValueError, dst.blits, [pygame.Surface((10, 10), SRCALPHA, 32)])
def test_blits_bad_surf_args(self):
dst = pygame.Surface((100, 10), SRCALPHA, 32)
self.assertRaises(TypeError, dst.blits, [(None, None)])
def test_blits_bad_dest(self):
dst = pygame.Surface((100, 10), SRCALPHA, 32)
self.assertRaises(TypeError, dst.blits, [(pygame.Surface((10, 10), SRCALPHA, 32), None)])
if __name__ == '__main__':
unittest.main()
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