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12 lines
488 B
Python
12 lines
488 B
Python
from tools.check_vram import vram_to_logical
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def test_vram_downsamples_2x2_lsb_first():
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# VRAM bit 1 is white, bit 0 is black (the driver's palette).
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vram = bytearray(256 * 1024)
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vram[0] = 0x0C # bits 2 and 3 white in row 0
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vram[256] = 0x0C # bits 2 and 3 white in row 1
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logical = vram_to_logical(bytes(vram), width=640, height=512, scale=2)
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assert logical[0, 0] # bits 0..1 are black
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assert not logical[0, 1] # bits 2..3 are white
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