// Copyright 2020 The Dawn & Tint Authors
//
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// modification, are permitted provided that the following conditions are met:
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// 1. Redistributions of source code must retain the above copyright notice, this
//    list of conditions and the following disclaimer.
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// 2. Redistributions in binary form must reproduce the above copyright notice,
//    this list of conditions and the following disclaimer in the documentation
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#include "src/dawn/native/opengl/QuerySetGL.h"

#include <utility>

#include "src/dawn/native/opengl/DeviceGL.h"
#include "src/dawn/native/opengl/UtilsGL.h"

namespace dawn::native::opengl {

// static
ResultOrError<Ref<QuerySet>> QuerySet::Create(Device* device,
                                              const QuerySetDescriptor* descriptor) {
    Ref<QuerySet> querySet = AcquireRef(new QuerySet(device, descriptor));

    if (!querySet->mQueries.empty()) {
        DAWN_TRY(device->EnqueueGL(
            [querySet, count = descriptor->count](const OpenGLFunctions& gl) -> MaybeError {
                DAWN_GL_TRY(gl, GenQueries(count, querySet->mQueries.data()));
                return {};
            }));
    }

    return std::move(querySet);
}

QuerySet::QuerySet(Device* device, const QuerySetDescriptor* descriptor)
    : QuerySetBase(device, descriptor), mQueries(GetQueryCount()) {}

QuerySet::~QuerySet() = default;

void QuerySet::DestroyImpl(DestroyReason reason) {
    auto device = ToBackend(GetDevice());

    if (!mQueries.empty()) {
        IgnoreErrors(device->EnqueueDestroyGL(
            this, &QuerySet::GetQueries, reason,
            [](const OpenGLFunctions& gl,
               const ityp::vector<QueryIndex, GLuint>& queries) -> MaybeError {
                DAWN_GL_TRY_IGNORE_ERRORS(gl,
                                          DeleteQueries(uint32_t{queries.size()}, queries.data()));
                return {};
            }));
    }
    QuerySetBase::DestroyImpl(reason);
}

GLuint QuerySet::Get(QueryIndex index) const {
    return mQueries[index];
}

const ityp::vector<QueryIndex, GLuint>& QuerySet::GetQueries() const {
    return mQueries;
}

}  // namespace dawn::native::opengl
