Mathias Agopian
3e1ea7cdfd
the main aim of this PR is to consolidate how we access the "per view" descriptor set to a single place. some validation code is moved into DescriptorSets.cpp, so we get a more centralized idea of what we do with the descriptors. also factorize in one place the filtering of sampler list by layouts.
145 lines
5.1 KiB
C++
145 lines
5.1 KiB
C++
/*
|
|
* Copyright (C) 2015 The Android Open Source Project
|
|
*
|
|
* 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 "private/filament/SamplerInterfaceBlock.h"
|
|
|
|
#include <private/filament/DescriptorSets.h>
|
|
|
|
#include <backend/DriverEnums.h>
|
|
|
|
#include <utils/Panic.h>
|
|
|
|
#include <initializer_list>
|
|
#include <iterator>
|
|
#include <string_view>
|
|
#include <utility>
|
|
|
|
#include <stddef.h>
|
|
#include <stdint.h>
|
|
|
|
using namespace utils;
|
|
|
|
namespace filament {
|
|
|
|
SamplerInterfaceBlock::Builder::Builder() = default;
|
|
SamplerInterfaceBlock::Builder::~Builder() noexcept = default;
|
|
|
|
SamplerInterfaceBlock::Builder&
|
|
SamplerInterfaceBlock::Builder::name(std::string_view interfaceBlockName) {
|
|
mName = { interfaceBlockName.data(), interfaceBlockName.size() };
|
|
return *this;
|
|
}
|
|
|
|
SamplerInterfaceBlock::Builder&
|
|
SamplerInterfaceBlock::Builder::stageFlags(backend::ShaderStageFlags stageFlags) {
|
|
mStageFlags = stageFlags;
|
|
return *this;
|
|
}
|
|
|
|
SamplerInterfaceBlock::Builder& SamplerInterfaceBlock::Builder::add(
|
|
std::string_view samplerName, Binding binding, Type type, Format format,
|
|
Precision precision, bool multisample) noexcept {
|
|
mEntries.push_back({
|
|
{ samplerName.data(), samplerName.size() }, // name
|
|
{ }, // uniform name
|
|
binding, type, format, precision, multisample });
|
|
return *this;
|
|
}
|
|
|
|
SamplerInterfaceBlock SamplerInterfaceBlock::Builder::build() {
|
|
return SamplerInterfaceBlock(*this);
|
|
}
|
|
|
|
SamplerInterfaceBlock::Builder& SamplerInterfaceBlock::Builder::add(
|
|
std::initializer_list<ListEntry> list) noexcept {
|
|
for (auto& e : list) {
|
|
add(e.name, e.binding, e.type, e.format, e.precision, e.multisample);
|
|
}
|
|
return *this;
|
|
}
|
|
|
|
// -------------------------------------------------------------------------------------------------
|
|
|
|
SamplerInterfaceBlock::SamplerInterfaceBlock() = default;
|
|
SamplerInterfaceBlock::SamplerInterfaceBlock(SamplerInterfaceBlock&& rhs) noexcept = default;
|
|
SamplerInterfaceBlock& SamplerInterfaceBlock::operator=(SamplerInterfaceBlock&& rhs) noexcept = default;
|
|
SamplerInterfaceBlock::~SamplerInterfaceBlock() noexcept = default;
|
|
|
|
SamplerInterfaceBlock::SamplerInterfaceBlock(Builder const& builder) noexcept
|
|
: mName(builder.mName), mStageFlags(builder.mStageFlags),
|
|
mSamplersInfoList(builder.mEntries.size())
|
|
{
|
|
auto& infoMap = mInfoMap;
|
|
infoMap.reserve(builder.mEntries.size());
|
|
|
|
auto& samplersInfoList = mSamplersInfoList;
|
|
|
|
for (auto const& e : builder.mEntries) {
|
|
size_t const i = std::distance(builder.mEntries.data(), &e);
|
|
SamplerInfo& info = samplersInfoList[i];
|
|
info = e;
|
|
info.uniformName = generateUniformName(mName.c_str(), e.name.c_str());
|
|
infoMap[{ info.name.data(), info.name.size() }] = i; // info.name.c_str() guaranteed constant
|
|
}
|
|
}
|
|
|
|
const SamplerInterfaceBlock::SamplerInfo* SamplerInterfaceBlock::getSamplerInfo(
|
|
std::string_view name) const {
|
|
auto pos = mInfoMap.find(name);
|
|
FILAMENT_CHECK_PRECONDITION(pos != mInfoMap.end()) << "sampler named \"" << name << "\" not found";
|
|
return &mSamplersInfoList[pos->second];
|
|
}
|
|
|
|
CString SamplerInterfaceBlock::generateUniformName(const char* group, const char* sampler) noexcept {
|
|
char uniformName[256];
|
|
|
|
// sampler interface block name
|
|
char* const prefix = std::copy_n(group,
|
|
std::min(sizeof(uniformName) / 2, strlen(group)), uniformName);
|
|
if (uniformName[0] >= 'A' && uniformName[0] <= 'Z') {
|
|
uniformName[0] |= 0x20; // poor man's tolower()
|
|
}
|
|
*prefix = '_';
|
|
|
|
char* last = std::copy_n(sampler,
|
|
std::min(sizeof(uniformName) / 2 - 2, strlen(sampler)),
|
|
prefix + 1);
|
|
*last++ = 0; // null terminator
|
|
assert_invariant(last <= std::end(uniformName));
|
|
|
|
return CString{ uniformName, size_t(last - uniformName) - 1u };
|
|
}
|
|
|
|
SamplerInterfaceBlock::SamplerInfoList SamplerInterfaceBlock::filterSamplerList(
|
|
SamplerInfoList list, backend::DescriptorSetLayout const& descriptorSetLayout) {
|
|
// remove all the samplers that are not included in the descriptor-set layout
|
|
list.erase(
|
|
std::remove_if(list.begin(), list.end(),
|
|
[&](auto const& entry) {
|
|
auto pos = std::find_if(
|
|
descriptorSetLayout.bindings.begin(),
|
|
descriptorSetLayout.bindings.end(),
|
|
[&entry](const auto& item) {
|
|
return item.binding == entry.binding;
|
|
});
|
|
return pos == descriptorSetLayout.bindings.end();
|
|
}), list.end());
|
|
|
|
return list;
|
|
}
|
|
|
|
} // namespace filament
|