On 06/25/2014 12:27 PM, Brian Paul wrote:
> GL_MAX_UNIFORM_BLOCK_SIZE is in bytes.  A "component" is regarded as being
> four bytes in size.  So to compute the number of components, divide the
> block size by 4.
> 
> With this change, nvidia's driver passes the test.

I might be tempted to s/4/sizeof(float)/g, but either way

Reviewed-by: Ian Romanick <[email protected]>

> Found by Kai Ninomiya of VMware.
> ---
>  tests/spec/arb_uniform_buffer_object/minmax.c |    6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/tests/spec/arb_uniform_buffer_object/minmax.c 
> b/tests/spec/arb_uniform_buffer_object/minmax.c
> index 03b254c..e5cd81a 100644
> --- a/tests/spec/arb_uniform_buffer_object/minmax.c
> +++ b/tests/spec/arb_uniform_buffer_object/minmax.c
> @@ -81,9 +81,9 @@ piglit_init(int argc, char **argv)
>       glGetIntegerv(GL_MAX_FRAGMENT_UNIFORM_COMPONENTS, &funiforms);
>       glGetIntegerv(GL_MAX_UNIFORM_BLOCK_SIZE, &blocksize);
>       piglit_test_min_int(GL_MAX_COMBINED_VERTEX_UNIFORM_COMPONENTS,
> -                      vblocks * blocksize + vuniforms);
> +                      vblocks * blocksize / 4 + vuniforms);
>       piglit_test_min_int(GL_MAX_COMBINED_FRAGMENT_UNIFORM_COMPONENTS,
> -                      fblocks * blocksize + funiforms);
> +                      fblocks * blocksize / 4 + funiforms);
>       if (gs) {
>               if (piglit_get_gl_version() >= 31) {
>                       glGetIntegerv(GL_MAX_GEOMETRY_UNIFORM_BLOCKS, &gblocks);
> @@ -91,7 +91,7 @@ piglit_init(int argc, char **argv)
>               glGetIntegerv(GL_MAX_GEOMETRY_UNIFORM_COMPONENTS, &guniforms);
>  
>               piglit_test_min_int(GL_MAX_COMBINED_GEOMETRY_UNIFORM_COMPONENTS,
> -                                 gblocks * blocksize + guniforms);
> +                                 gblocks * blocksize / 4 + guniforms);
>       }
>  
>       piglit_test_min_int(GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT, 1);
> 

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