Masked and Alpha Texture disappears when fullscreen
Blitz3D Forums/Blitz3D Programming/Masked and Alpha Texture disappears when fullscreen
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| Hi, I have a Texture which is created at runtime and then applied to an entity to produce a mask (in conjunction with another texture) I works in windowed mode but not in full-screen mode. thoughts? yinch'03 |
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| Just to add to the information. 1. That texture's masking works if I load a texture (instead of generate it) 2. The masking doesn't work if I do draw operations directly to the texturebuffer - I have to draw it in the backbuffer and copy it over 3. Other masking textures (loaded ones) are working in the same scene. yinch'03 |
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| Ok this is for anyone else who comes across this problem. The explanation is as follows: When in windowed mode, the 'ink' as set by the Color command has an Alpha component - so when you write to a buffer, it also sets the alpha component of that pixel. For some reason, the behaviour changes when running in Full-Screen mode. The ink doesn't affect the alpha component. My fix was to use a read/writepixelfast to scan the texture for black pixels and writing the alpha component directly. that's all. yinch'03 |
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| We need more of these posts... someone who has a problem, elaborates the problem, then solves the problem with no other input. Just thought I would chip in to show that posts do get noticed ;-) |
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