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// Copyright 2019 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 "tests/DawnTest.h"
#include <array>
#include <vector>
class NonzeroBufferCreationTests : public DawnTest {
public:
void MapReadAsyncAndWait(wgpu::Buffer buffer, uint64_t offset, uint64_t size) {
bool done = false;
buffer.MapAsync(
wgpu::MapMode::Read, offset, size,
[](WGPUBufferMapAsyncStatus status, void* userdata) {
ASSERT_EQ(WGPUBufferMapAsyncStatus_Success, status);
*static_cast<bool*>(userdata) = true;
},
&done);
while (!done) {
WaitABit();
}
}
};
// Verify that each byte of the buffer has all been initialized to 1 with the toggle enabled when it
// is created with CopyDst usage.
TEST_P(NonzeroBufferCreationTests, BufferCreationWithCopyDstUsage) {
constexpr uint32_t kSize = 32u;
wgpu::BufferDescriptor descriptor;
descriptor.size = kSize;
descriptor.usage = wgpu::BufferUsage::CopySrc | wgpu::BufferUsage::CopyDst;
wgpu::Buffer buffer = device.CreateBuffer(&descriptor);
std::vector<uint8_t> expectedData(kSize, uint8_t(1u));
EXPECT_BUFFER_U32_RANGE_EQ(reinterpret_cast<uint32_t*>(expectedData.data()), buffer, 0,
kSize / sizeof(uint32_t));
}
// Verify that each byte of the buffer has all been initialized to 1 with the toggle enabled when it
// is created with MapWrite without CopyDst usage.
TEST_P(NonzeroBufferCreationTests, BufferCreationWithMapWriteWithoutCopyDstUsage) {
constexpr uint32_t kSize = 32u;
wgpu::BufferDescriptor descriptor;
descriptor.size = kSize;
descriptor.usage = wgpu::BufferUsage::MapWrite | wgpu::BufferUsage::CopySrc;
wgpu::Buffer buffer = device.CreateBuffer(&descriptor);
std::vector<uint8_t> expectedData(kSize, uint8_t(1u));
EXPECT_BUFFER_U32_RANGE_EQ(reinterpret_cast<uint32_t*>(expectedData.data()), buffer, 0,
kSize / sizeof(uint32_t));
}
// Verify that each byte of the buffer has all been initialized to 1 with the toggle enabled when
// it is created with mappedAtCreation == true.
TEST_P(NonzeroBufferCreationTests, BufferCreationWithMappedAtCreation) {
// When we use Dawn wire, the lazy initialization of the buffers with mappedAtCreation == true
// are done in the Dawn wire and we don't plan to get it work with the toggle
// "nonzero_clear_resources_on_creation_for_testing" (we will have more tests on it in the
// BufferZeroInitTests.
DAWN_TEST_UNSUPPORTED_IF(UsesWire());
constexpr uint32_t kSize = 32u;
wgpu::BufferDescriptor defaultDescriptor;
defaultDescriptor.size = kSize;
defaultDescriptor.mappedAtCreation = true;
const std::vector<uint8_t> expectedData(kSize, uint8_t(1u));
const uint32_t* expectedDataPtr = reinterpret_cast<const uint32_t*>(expectedData.data());
// Buffer with MapRead usage
{
wgpu::BufferDescriptor descriptor = defaultDescriptor;
descriptor.usage = wgpu::BufferUsage::MapRead;
wgpu::Buffer buffer = device.CreateBuffer(&descriptor);
const uint8_t* mappedData = static_cast<const uint8_t*>(buffer.GetConstMappedRange());
EXPECT_EQ(0, memcmp(mappedData, expectedData.data(), kSize));
buffer.Unmap();
MapReadAsyncAndWait(buffer, 0, kSize);
mappedData = static_cast<const uint8_t*>(buffer.GetConstMappedRange());
EXPECT_EQ(0, memcmp(mappedData, expectedData.data(), kSize));
buffer.Unmap();
}
// Buffer with MapWrite usage
{
wgpu::BufferDescriptor descriptor = defaultDescriptor;
descriptor.usage = wgpu::BufferUsage::MapWrite | wgpu::BufferUsage::CopySrc;
wgpu::Buffer buffer = device.CreateBuffer(&descriptor);
const uint8_t* mappedData = static_cast<const uint8_t*>(buffer.GetConstMappedRange());
EXPECT_EQ(0, memcmp(mappedData, expectedData.data(), kSize));
buffer.Unmap();
EXPECT_BUFFER_U32_RANGE_EQ(expectedDataPtr, buffer, 0, kSize / sizeof(uint32_t));
}
// Buffer with neither MapRead nor MapWrite usage
{
wgpu::BufferDescriptor descriptor = defaultDescriptor;
descriptor.usage = wgpu::BufferUsage::CopySrc;
wgpu::Buffer buffer = device.CreateBuffer(&descriptor);
const uint8_t* mappedData = static_cast<const uint8_t*>(buffer.GetConstMappedRange());
EXPECT_EQ(0, memcmp(mappedData, expectedData.data(), kSize));
buffer.Unmap();
EXPECT_BUFFER_U32_RANGE_EQ(expectedDataPtr, buffer, 0, kSize / sizeof(uint32_t));
}
}
DAWN_INSTANTIATE_TEST(NonzeroBufferCreationTests,
D3D12Backend({"nonzero_clear_resources_on_creation_for_testing"},
{"lazy_clear_resource_on_first_use"}),
MetalBackend({"nonzero_clear_resources_on_creation_for_testing"},
{"lazy_clear_resource_on_first_use"}),
OpenGLBackend({"nonzero_clear_resources_on_creation_for_testing"},
{"lazy_clear_resource_on_first_use"}),
OpenGLESBackend({"nonzero_clear_resources_on_creation_for_testing"},
{"lazy_clear_resource_on_first_use"}),
VulkanBackend({"nonzero_clear_resources_on_creation_for_testing"},
{"lazy_clear_resource_on_first_use"}));