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dxvk/src/dxbc/dxbc_options.cpp
Philip Rebohle 38c6eeed26
[dxbc] Only emit depth clamp in fragment shader if necessary
We don't need this if the depth clip extension is supported
by the driver.
2019-02-19 14:27:21 +01:00

43 lines
1.6 KiB
C++

#include "../d3d11/d3d11_options.h"
#include "dxbc_options.h"
namespace dxvk {
DxbcOptions::DxbcOptions() {
}
DxbcOptions::DxbcOptions(const Rc<DxvkDevice>& device, const D3D11Options& options) {
const Rc<DxvkAdapter> adapter = device->adapter();
const DxvkDeviceFeatures& devFeatures = device->features();
const DxvkDeviceInfo& devInfo = adapter->devicePropertiesExt();
useDepthClipWorkaround
= !devFeatures.extDepthClipEnable.depthClipEnable;
useStorageImageReadWithoutFormat
= devFeatures.core.features.shaderStorageImageReadWithoutFormat;
useSubgroupOpsForEarlyDiscard
= (devInfo.coreSubgroup.subgroupSize >= 4)
&& (devInfo.coreSubgroup.supportedStages & VK_SHADER_STAGE_FRAGMENT_BIT)
&& (devInfo.coreSubgroup.supportedOperations & VK_SUBGROUP_FEATURE_BALLOT_BIT);
useRawSsbo
= (devInfo.core.properties.limits.minStorageBufferOffsetAlignment <= sizeof(uint32_t));
strictDivision = options.strictDivision;
zeroInitWorkgroupMemory = options.zeroInitWorkgroupMemory;
// Disable early discard on RADV due to GPU hangs
// Disable early discard on Nvidia because it may hurt performance
if (adapter->matchesDriver(DxvkGpuVendor::Amd, VK_DRIVER_ID_MESA_RADV_KHR, 0, 0)
|| adapter->matchesDriver(DxvkGpuVendor::Nvidia, VK_DRIVER_ID_NVIDIA_PROPRIETARY_KHR, 0, 0))
useSubgroupOpsForEarlyDiscard = false;
// Apply shader-related options
applyTristate(useSubgroupOpsForEarlyDiscard, device->config().useEarlyDiscard);
applyTristate(useRawSsbo, device->config().useRawSsbo);
}
}