41 lines
831 B
Python
Executable File
41 lines
831 B
Python
Executable File
#!/usr/bin/python3
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import pykms
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# This hack makes drm initialize the fbcon, setting up the default connector
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card = pykms.Card()
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card = 0
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card = pykms.Card()
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res = pykms.ResourceManager(card)
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conn = res.reserve_connector()
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crtc = res.reserve_crtc(conn)
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mode = conn.get_default_mode()
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fb = pykms.DumbFramebuffer(card, mode.hdisplay, mode.vdisplay, "XR24");
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pykms.draw_test_pattern(fb);
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crtc.set_mode(conn, fb, mode)
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len=256
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arr = bytearray(len*2*4)
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view = memoryview(arr).cast("H")
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for i in range(len):
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g = round(65535 * pow(i / float(len), 1 / 2.2))
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view[i * 4 + 0] = g
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view[i * 4 + 1] = g
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view[i * 4 + 2] = g
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view[i * 4 + 3] = 0
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gamma = pykms.Blob(card, arr);
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crtc.set_prop("GAMMA_LUT", gamma.id)
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input("press enter to remove gamma\n")
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crtc.set_prop("GAMMA_LUT", 0)
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input("press enter to exit\n")
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