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having problem

Started by adeelali Apr 13, 2006 at 8:33 PM 0 replies 350+ views

Original Post

Apr 13, 2006 at 8:33 PM

I am having problem using this code + if use GL_RGB in creating texture this piece of code works fine however with GL_LUMINANCE it is gives a run time error "invalid enumerant at the END " Can someone figure out what is wrong with the code glBindTexture(GL_TEXTURE_2D, _iTexture[0]); // (set texture parameters here) glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP); //create the texture glTexImage2D(GL_TEXTURE_2D, 0, GL_LUMINANCE, _iWidth, _iHeight, 0, GL_RGB, GL_LUMINANCE, 0); glGenFramebuffersEXT(1, &_mybuffer); glBindFramebufferEXT(GL_FRAMEBUFFER_EXT,_mybuffer); glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_2D, _iTexture[0], 0);

Falken42

Apr 13, 2006 at 9:01 PM

You're not calling glTexImage2D with the correct parameters. You cannot mix GL_RGB with GL_LUMINANCE.

I don't know what format your texture is in, but if you need an 8-bit luminance texture, you should use:

glTexImage2D(GL_TEXTURE_2D, 0, GL_LUMINANCE8, _iWidth, _iHeight, 0, GL_LUMINANCE, GL_UNSIGNED_BYTE, 0);

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