2017-04-20 18:38:20 +00:00
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// Copyright 2017 The NXT Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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2017-07-06 18:41:13 +00:00
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#include "backend/PipelineLayout.h"
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2017-04-20 18:38:20 +00:00
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2017-07-06 18:41:13 +00:00
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#include "backend/BindGroupLayout.h"
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#include "backend/Device.h"
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2017-07-10 17:46:05 +00:00
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#include "common/Assert.h"
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2017-04-20 18:38:20 +00:00
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namespace backend {
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// PipelineLayoutBase
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PipelineLayoutBase::PipelineLayoutBase(PipelineLayoutBuilder* builder)
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: bindGroupLayouts(std::move(builder->bindGroupLayouts)), mask(builder->mask) {
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}
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const BindGroupLayoutBase* PipelineLayoutBase::GetBindGroupLayout(size_t group) const {
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ASSERT(group < kMaxBindGroups);
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return bindGroupLayouts[group].Get();
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}
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const std::bitset<kMaxBindGroups> PipelineLayoutBase::GetBindGroupsLayoutMask() const {
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return mask;
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}
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2017-07-15 05:37:06 +00:00
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std::bitset<kMaxBindGroups> PipelineLayoutBase::InheritedGroupsMask(const PipelineLayoutBase* other) const {
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return { GroupsInheritUpTo(other) - 1 };
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}
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uint32_t PipelineLayoutBase::GroupsInheritUpTo(const PipelineLayoutBase* other) const {
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for (uint32_t i = 0; i < kMaxBindGroups; ++i) {
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if (!mask[i] || bindGroupLayouts[i].Get() != other->bindGroupLayouts[i].Get()) {
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return i;
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}
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}
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return kMaxBindGroups + 1;
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}
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2017-04-20 18:38:20 +00:00
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// PipelineLayoutBuilder
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2017-05-08 08:52:11 +00:00
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PipelineLayoutBuilder::PipelineLayoutBuilder(DeviceBase* device) : Builder(device) {
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}
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2017-05-08 13:17:44 +00:00
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PipelineLayoutBase* PipelineLayoutBuilder::GetResultImpl() {
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2017-04-20 18:38:20 +00:00
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// TODO(cwallez@chromium.org): this is a hack, have the null bind group layout somewhere in the device
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// once we have a cache of BGL
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for (size_t group = 0; group < kMaxBindGroups; ++group) {
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if (!bindGroupLayouts[group]) {
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bindGroupLayouts[group] = device->CreateBindGroupLayoutBuilder()->GetResult();
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}
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}
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return device->CreatePipelineLayout(this);
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}
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void PipelineLayoutBuilder::SetBindGroupLayout(uint32_t groupIndex, BindGroupLayoutBase* layout) {
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if (groupIndex >= kMaxBindGroups) {
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HandleError("groupIndex is over the maximum allowed");
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return;
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}
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if (mask[groupIndex]) {
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HandleError("Bind group layout already specified");
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return;
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}
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bindGroupLayouts[groupIndex] = layout;
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mask.set(groupIndex);
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}
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}
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