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Back to Graphics and GPU Programming

Why the bitmap inclined

Graphics and GPU Programming Programming

Started by Benjamin Wong January 05, 2000 01:20 AM

2 comments, last by Benjamin Wong 24 years, 6 months ago

Benjamin Wong

122

Author

January 05, 2000 01:20 AM

Hi I am a beginner in game programming. I have read the book Windows Game Programming for Dummies. And try to load my own bitmap use the function inside the book. I found the bitmap is not just inverted but also inclined. Could anyone tell me what''s happen and how could I do? Thanks

Little Joker

SiCrane

11,840

January 05, 2000 04:41 AM

I don''t know the book you''re talking about, but the bitmap being inclined sounds like a problem with the pixel row padding. In a bitmap, every row of pixels should be padded to reach a multiple of four. If your store/load function doesn''t take this into account when displayed the bitmap may be skewed.

122

January 05, 2000 07:25 AM

Every scanline should be padded to a DWORD.

Check ut my homepage for some reference about this.

It''s in the bitmap write function....(you can use the same for loading, but don''t write *LOL*)

Dance with me......

http://members.xoom.com/CJdeVos/index.htm

acw83

174

January 05, 2000 05:03 PM

I ahd that problem too. You need to make sure your bitmap''s dimensions are powers of 2 and that the color depth is 8 bits per pixel. Lamoth''s engine won''t load RLE bitmaps either so get Paint Shop Pro and save in RGB format.