Thread: Texture mapping anomaly opengl

  1. #1
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    Aug 2003
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    Texture mapping anomaly opengl

    Im rusty at OpenGL but didnt think i was this rusty. I have an anomaly with texture mapping in OpenGL.

    I use OGL under SDL, but it seems like the glTexCoord2f produces some weird result, when i should have 0.0 I need to have 0.0+1.0/textureWidth, when i should have 1.0 i need to have 1.0-1.0/textureWidth and so on. That is I get a "frame" around my texture that is 1 pixel wide and it has the color which should be on the exact opposite side of the quad.


    I am using Debian Linux, fluxbox, SDL, OpenGl and DevIL in my application. I have tried loading both a png image and a bmp image but they both produce the same result.

    Anybody has any suggestions and has had similar problems earlier? Is it DevIL that makes it troublesome for me?

  2. #2
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    Aug 2003
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    Solved!

    Damn i feel stupid. I used the GL_LINEAR MIN and MAG filter for the texture and thats what casued it, when I used the GL_NEAREST filter instead it worked as expected.

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