| // Copyright 2017 The Dawn Authors |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #include "dawn_native/d3d12/SamplerD3D12.h" |
| |
| #include "dawn_native/d3d12/DeviceD3D12.h" |
| #include "dawn_native/d3d12/UtilsD3D12.h" |
| |
| namespace dawn_native { namespace d3d12 { |
| |
| namespace { |
| D3D12_TEXTURE_ADDRESS_MODE AddressMode(wgpu::AddressMode mode) { |
| switch (mode) { |
| case wgpu::AddressMode::Repeat: |
| return D3D12_TEXTURE_ADDRESS_MODE_WRAP; |
| case wgpu::AddressMode::MirrorRepeat: |
| return D3D12_TEXTURE_ADDRESS_MODE_MIRROR; |
| case wgpu::AddressMode::ClampToEdge: |
| return D3D12_TEXTURE_ADDRESS_MODE_CLAMP; |
| default: |
| UNREACHABLE(); |
| } |
| } |
| } // namespace |
| |
| Sampler::Sampler(Device* device, const SamplerDescriptor* descriptor) |
| : SamplerBase(device, descriptor) { |
| // https://msdn.microsoft.com/en-us/library/windows/desktop/dn770367(v=vs.85).aspx |
| // hex value, decimal value, min linear, mag linear, mip linear |
| // D3D12_FILTER_MIN_MAG_MIP_POINT = 0 0 0 0 0 |
| // D3D12_FILTER_MIN_MAG_POINT_MIP_LINEAR = 0x1 1 0 0 1 |
| // D3D12_FILTER_MIN_POINT_MAG_LINEAR_MIP_POINT = 0x4 4 0 1 0 |
| // D3D12_FILTER_MIN_POINT_MAG_MIP_LINEAR = 0x5 5 0 1 1 |
| // D3D12_FILTER_MIN_LINEAR_MAG_MIP_POINT = 0x10 16 1 0 0 |
| // D3D12_FILTER_MIN_LINEAR_MAG_POINT_MIP_LINEAR = 0x11 17 1 0 1 |
| // D3D12_FILTER_MIN_MAG_LINEAR_MIP_POINT = 0x14 20 1 1 0 |
| // D3D12_FILTER_MIN_MAG_MIP_LINEAR = 0x15 21 1 1 1 |
| |
| // if mip mode is linear, add 1 |
| // if mag mode is linear, add 4 |
| // if min mode is linear, add 16 |
| |
| uint8_t mode = 0; |
| |
| switch (descriptor->minFilter) { |
| case wgpu::FilterMode::Nearest: |
| break; |
| case wgpu::FilterMode::Linear: |
| mode += 16; |
| break; |
| } |
| |
| switch (descriptor->magFilter) { |
| case wgpu::FilterMode::Nearest: |
| break; |
| case wgpu::FilterMode::Linear: |
| mode += 4; |
| break; |
| } |
| |
| switch (descriptor->mipmapFilter) { |
| case wgpu::FilterMode::Nearest: |
| break; |
| case wgpu::FilterMode::Linear: |
| mode += 1; |
| break; |
| } |
| |
| mSamplerDesc.Filter = static_cast<D3D12_FILTER>(mode); |
| mSamplerDesc.AddressU = AddressMode(descriptor->addressModeU); |
| mSamplerDesc.AddressV = AddressMode(descriptor->addressModeV); |
| mSamplerDesc.AddressW = AddressMode(descriptor->addressModeW); |
| mSamplerDesc.MipLODBias = 0.f; |
| mSamplerDesc.MaxAnisotropy = 1; |
| mSamplerDesc.ComparisonFunc = ToD3D12ComparisonFunc(descriptor->compare); |
| mSamplerDesc.MinLOD = descriptor->lodMinClamp; |
| mSamplerDesc.MaxLOD = descriptor->lodMaxClamp; |
| } |
| |
| const D3D12_SAMPLER_DESC& Sampler::GetSamplerDescriptor() const { |
| return mSamplerDesc; |
| } |
| |
| }} // namespace dawn_native::d3d12 |