I try to subload a compressed texture, but glCompressedTexSubImage2DARB return an error : GL_INVALIB_OPERATION, why ?
How can i subload a compressed texture ?
Can you show me a sample ?
ToF_Fou, thx for your help …
This is a sample of my code :
/this operation works perfectly/
glCompressedTexImage2DARB(GL_TEXTURE_2D, 0,dxtcimg->format,dxtcimg->width,dxtcimg->height,0,dxtcimg->size, dxtcimg->pixels);
glPixelStorei(GL_UNPACK_ROW_LENGTH, dxtcimg->width);
glPixelStorei(GL_UNPACK_SKIP_ROWS, 0);
glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
/return with glGetError a GL_INVALID_OPERATION/
glCompressedTexSubImage2DARB(
GL_TEXTURE_2D,0, 256, 256, 128, 128,
dxtcimg->format, dxtcimg->size, dxtcimg->pixels);