D3DERR: Unable to lock render target surface

BlitzMax Forums/MaxGUI Module/D3DERR: Unable to lock render target surface

Rozek (Posted 2010) [#1]

Hello! Does anybody know the error message "D3DERR: Unable to lock render target surface" under Windows (obviously)? I am trying to develop TProxyGadgets which draw lots of Pixmaps (because Image drawing did not handle transparency properly under Windows - while it did under MacOS X) Thanks in advance for any help!

ima747 (Posted 2010) [#2]

not really a solution but have you tried using the OpenGL driver instead of D3D on windows? though perhaps you're trying to work with the D3D driver specifically... I had a number of problems with D3D on windows in 1.38, but since I'm developing for mac and PC at the same time I just set everything to use openGL and it comes out the same.

Rozek (Posted 2010) [#3]

Hmmm, I think I'll give it a try (I might have to use OpenGL anyway sooner or later) Thanks for your hint!

Chaduke (Posted 2011) [#4]

This error occurs when you try to draw a pixmap in a location that causes it to draw past the edge of the screen. It doesn't happen using the OpenGL driver. I came across this post from a web search on the error message today.