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radv: enable denorms for 64-bit and 16-bit floats 

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.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
This commit is contained in:
Samuel Pitoiset 2017-12-28 22:55:27 +01:00
parent 7643c71527
commit ec63ab39be
1 changed files with 14 additions and 0 deletions
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14
src/amd/common/ac_nir_to_llvm.c
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@ -6892,6 +6892,20 @@ 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;
}
static void