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// Copyright 2021 The Dawn 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 <vector>
#include "dawn/tests/unittests/validation/ValidationTest.h"
#include "dawn/utils/ComboRenderPipelineDescriptor.h"
#include "dawn/utils/WGPUHelpers.h"
namespace {
class WriteBufferTest : public ValidationTest {
public:
wgpu::Buffer CreateWritableBuffer(uint64_t size) {
wgpu::BufferDescriptor desc;
desc.usage = wgpu::BufferUsage::CopyDst;
desc.size = size;
return device.CreateBuffer(&desc);
}
wgpu::CommandBuffer EncodeWriteBuffer(wgpu::Buffer buffer,
uint64_t bufferOffset,
uint64_t size) {
std::vector<uint8_t> data(size);
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
encoder.WriteBuffer(buffer, bufferOffset, data.data(), size);
return encoder.Finish();
}
};
// Tests that the buffer offset is validated to be a multiple of 4 bytes.
TEST_F(WriteBufferTest, OffsetAlignment) {
wgpu::Buffer buffer = CreateWritableBuffer(64);
EncodeWriteBuffer(buffer, 0, 4);
EncodeWriteBuffer(buffer, 4, 4);
EncodeWriteBuffer(buffer, 60, 4);
ASSERT_DEVICE_ERROR(EncodeWriteBuffer(buffer, 1, 4));
ASSERT_DEVICE_ERROR(EncodeWriteBuffer(buffer, 2, 4));
ASSERT_DEVICE_ERROR(EncodeWriteBuffer(buffer, 3, 4));
ASSERT_DEVICE_ERROR(EncodeWriteBuffer(buffer, 5, 4));
ASSERT_DEVICE_ERROR(EncodeWriteBuffer(buffer, 11, 4));
}
// Tests that the buffer size is validated to be a multiple of 4 bytes.
TEST_F(WriteBufferTest, SizeAlignment) {
wgpu::Buffer buffer = CreateWritableBuffer(64);
EncodeWriteBuffer(buffer, 0, 64);
EncodeWriteBuffer(buffer, 4, 60);
EncodeWriteBuffer(buffer, 40, 24);
ASSERT_DEVICE_ERROR(EncodeWriteBuffer(buffer, 0, 63));
ASSERT_DEVICE_ERROR(EncodeWriteBuffer(buffer, 4, 1));
ASSERT_DEVICE_ERROR(EncodeWriteBuffer(buffer, 4, 2));
ASSERT_DEVICE_ERROR(EncodeWriteBuffer(buffer, 40, 23));
}
// Tests that the buffer size and offset are validated to fit within the bounds of the buffer.
TEST_F(WriteBufferTest, BufferBounds) {
wgpu::Buffer buffer = CreateWritableBuffer(64);
EncodeWriteBuffer(buffer, 0, 64);
EncodeWriteBuffer(buffer, 4, 60);
EncodeWriteBuffer(buffer, 40, 24);
ASSERT_DEVICE_ERROR(EncodeWriteBuffer(buffer, 0, 68));
ASSERT_DEVICE_ERROR(EncodeWriteBuffer(buffer, 4, 64));
ASSERT_DEVICE_ERROR(EncodeWriteBuffer(buffer, 60, 8));
ASSERT_DEVICE_ERROR(EncodeWriteBuffer(buffer, 64, 4));
}
// Tests that the destination buffer's usage is validated to contain CopyDst.
TEST_F(WriteBufferTest, RequireCopyDstUsage) {
wgpu::BufferDescriptor desc;
desc.usage = wgpu::BufferUsage::CopySrc;
desc.size = 64;
wgpu::Buffer buffer = device.CreateBuffer(&desc);
ASSERT_DEVICE_ERROR(EncodeWriteBuffer(buffer, 0, 64));
}
// Tests that the destination buffer's state is validated at submission.
TEST_F(WriteBufferTest, ValidBufferState) {
wgpu::BufferDescriptor desc;
desc.usage = wgpu::BufferUsage::CopyDst;
desc.size = 64;
desc.mappedAtCreation = true;
wgpu::Buffer buffer = device.CreateBuffer(&desc);
wgpu::CommandBuffer commands = EncodeWriteBuffer(buffer, 0, 64);
ASSERT_DEVICE_ERROR(device.GetQueue().Submit(1, &commands));
commands = EncodeWriteBuffer(buffer, 0, 64);
buffer.Unmap();
device.GetQueue().Submit(1, &commands);
}
} // namespace