AlexIndustrial/mesa
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

radv: enable FP16/FP64 denormals earlier and only for LLVM

Browse Source 
ACO sets this itself and will have to set it differently in the future to
support shaderDenormFlushToZeroFloat64.

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
This commit is contained in:
Rhys Perry
2019-11-11 13:41:32 +00:00
parent c6c7652753
commit d7b0d9a8d8
1 changed files with 14 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/amd/vulkan/radv_shader.c
+14 -14
View File
@@ -700,20 +700,6 @@ static void radv_postprocess_config(const struct radv_physical_device *pdevice,
config_out->num_sgprs = num_sgprs;
config_out->num_shared_vgprs = num_shared_vgprs;
/* 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.
* - GFX6 & GFX7 would be very slow.
*/
config_out->float_mode |= V_00B028_FP_64_DENORMS;
config_out->rsrc2 = S_00B12C_USER_SGPR(info->num_user_sgprs) |
S_00B12C_SCRATCH_EN(scratch_enabled);
@@ -971,6 +957,20 @@ radv_shader_variant_create(struct radv_device *device,
return NULL;
}
/* 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.
* - GFX6 & GFX7 would be very slow.
*/
config.float_mode |= V_00B028_FP_64_DENORMS;
if (rtld_binary.lds_size > 0) {
unsigned alloc_granularity = device->physical_device->rad_info.chip_class >= GFX7 ? 512 : 256;
config.lds_size = align(rtld_binary.lds_size, alloc_granularity) / alloc_granularity;