i have to do texture uploads at runtime and want to split up one upload into several glSubTexImage2D calls (one for a 512x512 takes too long), in the first run i’d like to upload the upper part ind the 2nd run the lower one. But glTexSubImage(GL_TEXTURE_2D,0,0,0,TexWidth,HalfImageHeight,…,ub_TextureData); doesn work as expected. Do i have to set GL_PACK_ROW_* even if i use the full width?
Thank you very much in advance.
regards,
Stephan