dawn-cmake/src/tests/end2end/BasicTests.cpp

// Copyright 2017 The NXT Authors
//
// 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 "tests/NXTTest.h"

#include "utils/NXTHelpers.h"

class BasicTests : public NXTTest {
};

// Test Buffer::SetSubData changes the content of the buffer, but really this is the most
// basic test possible, and tests the test harness
TEST_P(BasicTests, BufferSetSubData) {
    nxt::Buffer buffer = device.CreateBufferBuilder()
        .SetSize(4)
        .SetAllowedUsage(nxt::BufferUsageBit::TransferSrc | nxt::BufferUsageBit::TransferDst)
        .SetInitialUsage(nxt::BufferUsageBit::TransferDst)
        .GetResult();

    uint32_t value = 3094587;
    buffer.SetSubData(0, 1, &value);

    EXPECT_BUFFER_U32_EQ(value, buffer, 0);
}

TEST_P(BasicTests, ReadPixelsTest) {
    RGBA8 red(255, 0, 0, 255);
    nxt::Buffer buffer = utils::CreateFrozenBufferFromData(device, &red, sizeof(red), nxt::BufferUsageBit::TransferSrc);

    nxt::Texture texture = device.CreateTextureBuilder()
        .SetDimension(nxt::TextureDimension::e2D)
        .SetExtent(1, 1, 1)
        .SetMipLevels(1)
        .SetAllowedUsage(nxt::TextureUsageBit::TransferSrc | nxt::TextureUsageBit::TransferDst)
        .SetFormat(nxt::TextureFormat::R8G8B8A8Unorm)
        .GetResult();

    nxt::CommandBuffer commands = device.CreateCommandBufferBuilder()
        .TransitionTextureUsage(texture, nxt::TextureUsageBit::TransferDst)
        .CopyBufferToTexture(buffer, 0, texture, 0, 0, 0, 1, 1, 1, 0)
        .GetResult();

    queue.Submit(1, &commands);

    EXPECT_PIXEL_RGBA8_EQ(red, texture, 0, 0);
}

NXT_INSTANTIATE_TEST(BasicTests, MetalBackend)