[Piglit] [PATCH] s3tc-errors: add more glTex[Sub]Image2D() error checking tests

[Eric Anholt]

Brian Paul <brianp at vmware.com> writes:

> Two new things:
> 1. Test small mipmap level sizes (width,height=1,2,4)
> 2. Test NPOT textures
>
> Passes with NVIDIA's driver.  Checks for a Mesa bug.
> ---
>  tests/texturing/s3tc-errors.c |  104 ++++++++++++++++++++++++++++++++++++++++-
>  1 files changed, 103 insertions(+), 1 deletions(-)


> +		/* Try TexSubImage of larger partial block on right edge */
> +		glTexSubImage2D(GL_TEXTURE_2D, 0,
> +				width-3-4, 0,  /* position */
> +				3+4, 4,        /* size */
> +				GL_RGBA, GL_UNSIGNED_BYTE, buf);
> +
> +		pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
> +
> +		/* Try TexSubImage of largeer partial block on top edge */

                                      "larger"

Other than that, while I don't like how many different errors are being
covered by a single test result, it does appear to to correctly test
what we need.

Reviewed-by: Eric Anholt <eric at anholt.net>
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