System hangs at glReadPixel call with GL_TEXTURE_2D_ARRAY for texturing

Posted by Roshan on Game Development See other posts from Game Development or by Roshan
Published on 2012-12-18T09:45:03Z Indexed on 2012/12/18 11:13 UTC
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opengl

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textures

I am calling glReadPixel after glDrawArray call. I am rendering a geometry with 3D texture on it as a target GL_TEXTURE_2D_ARRAY. My systems hangs at glreadpixel call. When i use target as GL_TEXTURE_3D the issue does not occurs and it correctly reads the framebuffer contents.

glReadPixels(0, 0, GetViewportWidth(), GetViewportHeight(), GL_RGBA, GL_UNSIGNED_BYTE, (GLvoid *)rendered_pixels);

I am using SNORM textures with GL_byte data in glTeximage3D call and I am not calling glPixelStorei, is it because of this? What should be the parameter for pixelstore call?

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