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< title > Blitz3D Docs< / title >
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< h1 > UnlockBuffer buffer< / h1 >
< h1 > Parameters< / h1 >
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buffer = any valid screen/image buffer (optional)
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< h1 > Description< / h1 >
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After you use LockBuffer on a buffer, the only graphics commands you can use are the read/write pixel commands ReadPixel, WritePixel, ReadPixelFast, and WritePixelFast. You must use this command before using other graphics commands.
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The buffer parameter isn't required. If omitted, the default buffer set with SetBuffer will be used.
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See the other commands for more information.
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See also: < a class = small href = LockedPitch.htm > LockedPitch< / a > , < a class = small href = LockedFormat.htm > LockedFormat< / a > , < a class = small href = LockedPixels.htm > LockedPixels< / a > , < a class = small href = ReadPixelFast.htm > ReadPixelFast< / a > , < a class = small href = WritePixelFast.htm > WritePixelFast< / a > , < a class = small href = LockBuffer.htm > LockBuffer< / a > .
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< h1 > < a href = ../2d_examples/UnlockBuffer.bb > Example< / a > < / h1 >
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; High Speed Graphics Commands
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Graphics 640,480,16
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; Draw a bunch of stuff on the screen
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For t= 1 To 1000
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Color Rnd(255),Rnd(255),Rnd(255)
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Rect Rnd(640),Rnd(480),Rnd(150),Rnd(150),Rnd(1)
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Next
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Delay 3000
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; Copy the top half of the screen over the bottom half
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; using fast pixels and locked buffers
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For x = 1 To 640
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For y = 1 To 240
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LockBuffer FrontBuffer()
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WritePixelFast x,y+241,ReadPixelFast(x,y)
