tst_qrhi_metal.mm - mozsearch

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// Copyright (C) 2026 The Qt Company Ltd.

// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only

#include <QtCore/qglobal.h>

#include <QtCore/qsize.h>

#import <Metal/Metal.h>

// Creates a rasterization rate map with the given screen size and a 2x2

// quality grid that halves the resolution in the second row and column, so

// that the physical size ends up smaller than the screen size.

quint64 tst_qrhi_createMetalRasterizationRateMap(void *device, const QSize &screenSize)

    id<MTLDevice> dev = (id<MTLDevice>) device;

    if (![dev supportsRasterizationRateMapWithLayerCount: 1])

        return 0;

    id<MTLRasterizationRateMap> rateMap = nil;

    @autoreleasepool {

        const float horizontal[] = { 1.0f, 0.5f };

        const float vertical[] = { 1.0f, 0.5f };

        MTLRasterizationRateLayerDescriptor *layer =

            [[MTLRasterizationRateLayerDescriptor alloc] initWithSampleCount: MTLSizeMake(2, 2, 1)

                                                                  horizontal: horizontal

                                                                    vertical: vertical];

        MTLRasterizationRateMapDescriptor *desc =

            [MTLRasterizationRateMapDescriptor rasterizationRateMapDescriptorWithScreenSize: MTLSizeMake(screenSize.width(), screenSize.height(), 1)

                                                                                     layer: layer];

        rateMap = [dev newRasterizationRateMapWithDescriptor: desc];

        [layer release];

    return quint64(rateMap);

void tst_qrhi_releaseMetalObject(quint64 object)

    [(id) object release];