> On Dec 28, 2017, at 16:55, Samuel Pitoiset <samuel.pitoi...@gmail.com> wrote:
> 
> Similar to RadeonSI.
> 
> This fixes:
> dEQP-VK.image.texel_view_compatible.graphic.basic.attachment_read.bc*r16g16b16a16_sfloat
> dEQP-VK.image.extended_usage_bit.attachment_write.r16_sfloat
> 
> Signed-off-by: Samuel Pitoiset <samuel.pitoi...@gmail.com>
> ---
> src/amd/common/ac_nir_to_llvm.c | 14 ++++++++++++++
> 1 file changed, 14 insertions(+)
> 
> diff --git a/src/amd/common/ac_nir_to_llvm.c b/src/amd/common/ac_nir_to_llvm.c
> index d9f2cb408c..9d9a1f911b 100644
> --- a/src/amd/common/ac_nir_to_llvm.c
> +++ b/src/amd/common/ac_nir_to_llvm.c
> @@ -6879,6 +6879,20 @@ static void 
> ac_compile_llvm_module(LLVMTargetMachineRef tm,
>       /* +3 for scratch wave offset and VCC */
>       config->num_sgprs = MAX2(config->num_sgprs,
>                                shader_info->num_input_sgprs + 3);
> +
> +     /* Enable 64-bit and 16-bit denormals, because there is no performance
> +      * cost.
> +      *
> +      * If denormals are enabled, all floating-point output modifiers are
> +      * ignored.
> +      *
> +      * Don't enable denormals for 32-bit floats, because:
> +      * - Floating-point output modifiers would be ignored by the hw.
> +      * - Some opcodes don't support denormals, such as v_mad_f32. We would
> +      *   have to stop using those.
> +      * - SI & CI would be very slow.
> +      */
> +     config->float_mode |= V_00B028_FP_64_DENORMS;
> }

This is set in the program binary. You should use that directly rather than 
ignoring it
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