clipping bug
Author
I encounter clipping bug in PRGFX_Line and PRGFX_PutBlock8bit (PR 3.07)
It seems that active viewport region (or PRGFX_Clip region) doesn''t clip lines or blocks...
drawing blocks outside viewport causes system crash
Anyone found similiar problem?
Hi Tomkh
The only time I had this cliping problem was when using a viewport of a diffrent size with T&L enabled. The image did not clip to the viewport nor did it scale to the size of the viewport. I am currently using PR4 Beta 1. It seems this is a bug that chris is probably aware of and will probably be fixed some time in the near future. I not sure about what kind of bugs were in PR3.07 and what they were at the time of release. Scrolling down Egerter Software News it seems the first T&L beta was started with version 3.07. My guess is that you have T&L enabled. The viewport function works fine when the T&L is disabled. Hope that helps.
Doug
I''ve used the clipping with 3.07 without T&L and I can varify that it worked just fine for me.
Gary
Gary
Author
I''m not using T&L (in fact i have a voodoo3 and PR 3.07)
Polygon clipper works fine,
even for PRGFX_Rectangle everything is ok.
But as i said, PRGFX_Line doesn''t work...
maybe i did something wrong...
i''ll be pleased if someone show me a simple example that clips the PRGFX_Line through the PRGFX_Clip region... (or even active viewport)
my example doesn''t work:
PRGFX_Clip( 100, 100, 200, 200);
PRGFX_Line( 100, 0, -100, 300);
Best regards,
Tomkh
Polygon clipper works fine,
even for PRGFX_Rectangle everything is ok.
But as i said, PRGFX_Line doesn''t work...
maybe i did something wrong...
i''ll be pleased if someone show me a simple example that clips the PRGFX_Line through the PRGFX_Clip region... (or even active viewport)
my example doesn''t work:
PRGFX_Clip( 100, 100, 200, 200);
PRGFX_Line( 100, 0, -100, 300);
Best regards,
Tomkh
PRGFX_Line has no clipping in it. It was designed for making a GUI and not rendering wireframe objects. It uses linear frame buffer writes so don''t use it if you can use hardware accelerated lines instead.
Author
i know that it uses lfb for writes, and i use it for GUI..
what about PRGFX_PutBlock8bit, has it clipping or not ?
what about PRGFX_PutBlock8bit, has it clipping or not ?
Yes PRGFX_Putblockbit does have clipping. If it''s not working it''s a bug and you should send me an example. You''ll probably get some nasty crashes too because it would do LFB writes off the side of the back buffer.
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