[Piglit] [PATCH piglit 4/6] bptc: Add tests using fbo-generatemipmap-formats

[Marek Olšák]

Reviewed-by: Marek Olšák <marek.olsak at amd.com>

Marek

On Tue, Jul 29, 2014 at 5:27 PM, Neil Roberts <neil at linux.intel.com> wrote:
> The unsigned half float format needs special handling because the
> texture that the test uploads tries to use negative values.
> ---
>  tests/all.py                           | 2 ++
>  tests/fbo/fbo-generatemipmap-formats.c | 7 +++++++
>  2 files changed, 9 insertions(+)
>
> diff --git a/tests/all.py b/tests/all.py
> index ed2d95e..053b0dd 100644
> --- a/tests/all.py
> +++ b/tests/all.py
> @@ -2288,6 +2288,8 @@ arb_texture_compression_bptc = {}
>  spec['ARB_texture_compression_bptc'] = arb_texture_compression_bptc
>  arb_texture_compression_bptc['invalid formats'] = concurrent_test('arb_texture_compression-invalid-formats bptc')
>  add_concurrent_test(arb_texture_compression_bptc, 'bptc-modes')
> +add_fbo_generatemipmap_extension(arb_texture_compression_bptc, 'GL_ARB_texture_compression_bptc-unorm', 'fbo-generatemipmap-formats')
> +add_fbo_generatemipmap_extension(arb_texture_compression_bptc, 'GL_ARB_texture_compression_bptc-float', 'fbo-generatemipmap-formats')
>
>  ext_vertex_array_bgra = {}
>  spec['EXT_vertex_array_bgra'] = ext_vertex_array_bgra
> diff --git a/tests/fbo/fbo-generatemipmap-formats.c b/tests/fbo/fbo-generatemipmap-formats.c
> index c7b01fb..9cb7d4e 100644
> --- a/tests/fbo/fbo-generatemipmap-formats.c
> +++ b/tests/fbo/fbo-generatemipmap-formats.c
> @@ -393,6 +393,13 @@ test_mipmap_drawing(int x, int y, int level, GLuint internalformat)
>                 g[0] = g[1] = g[2] = g[3] = 0;
>                 /* If alpha in DXT1 is >= 0.5, it should be white. */
>                 b[3] = 1;
> +       } else if (internalformat == GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT) {
> +               /* The texture is uploaded with values in the range
> +                * -5->+5 and these get mapped to 0,1 when drawing.
> +                * However when compressing to the unsigned float
> +                * compressed format the -5 values will get clamped to
> +                * 0 which comes out as 0.5 */
> +               r[1] = r[2] = g[0] = g[2] = b[0] = b[1] = 0.5f;
>         }
>
>         if (tex_width == 256) {
> --
> 1.9.3
>
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