// 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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//    this software without specific prior written permission.
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#include "dawn/native/opengl/QuerySetGL.h"

#include <utility>

#include "dawn/native/opengl/DeviceGL.h"
#include "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.size() > 0) {
        const OpenGLFunctions& gl = device->GetGL();
        DAWN_GL_TRY(gl, GenQueries(descriptor->count, querySet->mQueries.data()));
    }

    return std::move(querySet);
}

QuerySet::QuerySet(Device* device, const QuerySetDescriptor* descriptor)
    : QuerySetBase(device, descriptor), mQueries(descriptor->count) {}

QuerySet::~QuerySet() = default;

void QuerySet::DestroyImpl() {
    const OpenGLFunctions& gl = ToBackend(GetDevice())->GetGL();
    if (mQueries.size() > 0) {
        DAWN_GL_TRY_IGNORE_ERRORS(gl, DeleteQueries(mQueries.size(), mQueries.data()));
    }
    QuerySetBase::DestroyImpl();
}

GLuint QuerySet::Get(uint32_t index) const {
    return mQueries[index];
}

}  // namespace dawn::native::opengl