dawn-cmake/src/backend/DepthStencilState.cpp

136 lines
5.5 KiB
C++

// Copyright 2017 The NXT 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 "backend/DepthStencilState.h"
#include "backend/Device.h"
namespace backend {
// DepthStencilStateBase
DepthStencilStateBase::DepthStencilStateBase(DepthStencilStateBuilder* builder)
: mDepthInfo(builder->mDepthInfo), mStencilInfo(builder->mStencilInfo) {
}
bool DepthStencilStateBase::StencilTestEnabled() const {
return mStencilInfo.back.compareFunction != nxt::CompareFunction::Always ||
mStencilInfo.back.stencilFail != nxt::StencilOperation::Keep ||
mStencilInfo.back.depthFail != nxt::StencilOperation::Keep ||
mStencilInfo.back.depthStencilPass != nxt::StencilOperation::Keep ||
mStencilInfo.front.compareFunction != nxt::CompareFunction::Always ||
mStencilInfo.front.stencilFail != nxt::StencilOperation::Keep ||
mStencilInfo.front.depthFail != nxt::StencilOperation::Keep ||
mStencilInfo.front.depthStencilPass != nxt::StencilOperation::Keep;
}
const DepthStencilStateBase::DepthInfo& DepthStencilStateBase::GetDepth() const {
return mDepthInfo;
}
const DepthStencilStateBase::StencilInfo& DepthStencilStateBase::GetStencil() const {
return mStencilInfo;
}
// DepthStencilStateBuilder
enum DepthStencilStateSetProperties {
DEPTH_STENCIL_STATE_PROPERTY_DEPTH_COMPARE_FUNCTION = 0x1,
DEPTH_STENCIL_STATE_PROPERTY_DEPTH_WRITE_ENABLED = 0x2,
DEPTH_STENCIL_STATE_PROPERTY_STENCIL_BACK_FUNCTION = 0x4,
DEPTH_STENCIL_STATE_PROPERTY_STENCIL_FRONT_FUNCTION = 0x08,
DEPTH_STENCIL_STATE_PROPERTY_STENCIL_MASK = 0x10,
};
DepthStencilStateBuilder::DepthStencilStateBuilder(DeviceBase* device) : Builder(device) {
}
DepthStencilStateBase* DepthStencilStateBuilder::GetResultImpl() {
return mDevice->CreateDepthStencilState(this);
}
void DepthStencilStateBuilder::SetDepthCompareFunction(
nxt::CompareFunction depthCompareFunction) {
if ((mPropertiesSet & DEPTH_STENCIL_STATE_PROPERTY_DEPTH_COMPARE_FUNCTION) != 0) {
HandleError("Depth compare property set multiple times");
return;
}
mPropertiesSet |= DEPTH_STENCIL_STATE_PROPERTY_DEPTH_COMPARE_FUNCTION;
mDepthInfo.compareFunction = depthCompareFunction;
}
void DepthStencilStateBuilder::SetDepthWriteEnabled(bool enabled) {
if ((mPropertiesSet & DEPTH_STENCIL_STATE_PROPERTY_DEPTH_WRITE_ENABLED) != 0) {
HandleError("Depth write enabled property set multiple times");
return;
}
mPropertiesSet |= DEPTH_STENCIL_STATE_PROPERTY_DEPTH_WRITE_ENABLED;
mDepthInfo.depthWriteEnabled = enabled;
}
void DepthStencilStateBuilder::SetStencilFunction(nxt::Face face,
nxt::CompareFunction stencilCompareFunction,
nxt::StencilOperation stencilFail,
nxt::StencilOperation depthFail,
nxt::StencilOperation depthStencilPass) {
if (face == nxt::Face::None) {
HandleError("Can't set stencil function of None face");
return;
}
if (face & nxt::Face::Back) {
if ((mPropertiesSet & DEPTH_STENCIL_STATE_PROPERTY_STENCIL_BACK_FUNCTION) != 0) {
HandleError("Stencil back function property set multiple times");
return;
}
mPropertiesSet |= DEPTH_STENCIL_STATE_PROPERTY_STENCIL_BACK_FUNCTION;
mStencilInfo.back.compareFunction = stencilCompareFunction;
mStencilInfo.back.stencilFail = stencilFail;
mStencilInfo.back.depthFail = depthFail;
mStencilInfo.back.depthStencilPass = depthStencilPass;
}
if (face & nxt::Face::Front) {
if ((mPropertiesSet & DEPTH_STENCIL_STATE_PROPERTY_STENCIL_FRONT_FUNCTION) != 0) {
HandleError("Stencil front function property set multiple times");
return;
}
mPropertiesSet |= DEPTH_STENCIL_STATE_PROPERTY_STENCIL_FRONT_FUNCTION;
mStencilInfo.front.compareFunction = stencilCompareFunction;
mStencilInfo.front.stencilFail = stencilFail;
mStencilInfo.front.depthFail = depthFail;
mStencilInfo.front.depthStencilPass = depthStencilPass;
}
}
void DepthStencilStateBuilder::SetStencilMask(uint32_t readMask, uint32_t writeMask) {
if ((mPropertiesSet & DEPTH_STENCIL_STATE_PROPERTY_STENCIL_MASK) != 0) {
HandleError("Stencilmask property set multiple times");
return;
}
mPropertiesSet |= DEPTH_STENCIL_STATE_PROPERTY_STENCIL_MASK;
mStencilInfo.readMask = readMask;
mStencilInfo.writeMask = writeMask;
}
} // namespace backend