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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 <CoreFoundation/CoreFoundation.h>
#include <CoreVideo/CVPixelBuffer.h>
#include <IOSurface/IOSurface.h>
#include <memory>
#include <thread>
#include <vector>
#include "dawn/tests/DawnTest.h"
#include "dawn/native/MetalBackend.h"
#include "dawn/utils/ComboRenderPipelineDescriptor.h"
#include "dawn/utils/WGPUHelpers.h"
namespace dawn {
namespace {
void AddIntegerValue(CFMutableDictionaryRef dictionary, const CFStringRef key, int32_t value) {
CFNumberRef number = CFNumberCreate(nullptr, kCFNumberSInt32Type, &value);
CFDictionaryAddValue(dictionary, key, number);
CFRelease(number);
}
class ScopedIOSurfaceRef {
public:
ScopedIOSurfaceRef() : mSurface(nullptr) {}
explicit ScopedIOSurfaceRef(IOSurfaceRef surface) : mSurface(surface) {}
~ScopedIOSurfaceRef() {
if (mSurface != nullptr) {
CFRelease(mSurface);
mSurface = nullptr;
}
}
IOSurfaceRef get() const { return mSurface; }
ScopedIOSurfaceRef(ScopedIOSurfaceRef&& other) {
if (mSurface != nullptr) {
CFRelease(mSurface);
}
mSurface = other.mSurface;
other.mSurface = nullptr;
}
ScopedIOSurfaceRef& operator=(ScopedIOSurfaceRef&& other) {
if (mSurface != nullptr) {
CFRelease(mSurface);
}
mSurface = other.mSurface;
other.mSurface = nullptr;
return *this;
}
ScopedIOSurfaceRef(const ScopedIOSurfaceRef&) = delete;
ScopedIOSurfaceRef& operator=(const ScopedIOSurfaceRef&) = delete;
private:
IOSurfaceRef mSurface = nullptr;
};
ScopedIOSurfaceRef CreateSinglePlaneIOSurface(uint32_t width,
uint32_t height,
uint32_t format,
uint32_t bytesPerElement) {
CFMutableDictionaryRef dict = CFDictionaryCreateMutable(
kCFAllocatorDefault, 0, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
AddIntegerValue(dict, kIOSurfaceWidth, width);
AddIntegerValue(dict, kIOSurfaceHeight, height);
AddIntegerValue(dict, kIOSurfacePixelFormat, format);
AddIntegerValue(dict, kIOSurfaceBytesPerElement, bytesPerElement);
IOSurfaceRef ioSurface = IOSurfaceCreate(dict);
EXPECT_NE(nullptr, ioSurface);
CFRelease(dict);
return ScopedIOSurfaceRef(ioSurface);
}
class IOSurfaceTestBase : public DawnTest {
public:
wgpu::Texture WrapIOSurface(const wgpu::TextureDescriptor* descriptor,
IOSurfaceRef ioSurface,
bool isInitialized = true) {
native::metal::ExternalImageDescriptorIOSurface externDesc;
externDesc.cTextureDescriptor = reinterpret_cast<const WGPUTextureDescriptor*>(descriptor);
externDesc.ioSurface = ioSurface;
externDesc.isInitialized = isInitialized;
WGPUTexture texture = native::metal::WrapIOSurface(device.Get(), &externDesc);
return wgpu::Texture::Acquire(texture);
}
};
// A small fixture used to initialize default data for the IOSurface validation tests.
// These tests are skipped if the harness is using the wire.
class IOSurfaceValidationTests : public IOSurfaceTestBase {
public:
IOSurfaceValidationTests() {
defaultIOSurface = CreateSinglePlaneIOSurface(10, 10, kCVPixelFormatType_32BGRA, 4);
descriptor.dimension = wgpu::TextureDimension::e2D;
descriptor.format = wgpu::TextureFormat::BGRA8Unorm;
descriptor.size = {10, 10, 1};
descriptor.sampleCount = 1;
descriptor.mipLevelCount = 1;
descriptor.usage = wgpu::TextureUsage::RenderAttachment;
}
protected:
wgpu::TextureDescriptor descriptor;
ScopedIOSurfaceRef defaultIOSurface;
};
// Test a successful wrapping of an IOSurface in a texture
TEST_P(IOSurfaceValidationTests, Success) {
DAWN_TEST_UNSUPPORTED_IF(UsesWire());
wgpu::Texture texture = WrapIOSurface(&descriptor, defaultIOSurface.get());
ASSERT_NE(texture.Get(), nullptr);
}
// Test an error occurs if the texture descriptor is invalid
TEST_P(IOSurfaceValidationTests, InvalidTextureDescriptor) {
DAWN_TEST_UNSUPPORTED_IF(UsesWire());
wgpu::ChainedStruct chainedDescriptor;
descriptor.nextInChain = &chainedDescriptor;
ASSERT_DEVICE_ERROR(wgpu::Texture texture = WrapIOSurface(&descriptor, defaultIOSurface.get()));
ASSERT_EQ(texture.Get(), nullptr);
}
// Test an error occurs if the descriptor dimension isn't 2D
// TODO(crbug.com/dawn/814): Test 1D textures when implemented
TEST_P(IOSurfaceValidationTests, InvalidTextureDimension) {
DAWN_TEST_UNSUPPORTED_IF(UsesWire());
descriptor.dimension = wgpu::TextureDimension::e3D;
ASSERT_DEVICE_ERROR(wgpu::Texture texture = WrapIOSurface(&descriptor, defaultIOSurface.get()));
ASSERT_EQ(texture.Get(), nullptr);
}
// Test an error occurs if the descriptor mip level count isn't 1
TEST_P(IOSurfaceValidationTests, InvalidMipLevelCount) {
DAWN_TEST_UNSUPPORTED_IF(UsesWire());
descriptor.mipLevelCount = 2;
ASSERT_DEVICE_ERROR(wgpu::Texture texture = WrapIOSurface(&descriptor, defaultIOSurface.get()));
ASSERT_EQ(texture.Get(), nullptr);
}
// Test an error occurs if the descriptor depth isn't 1
TEST_P(IOSurfaceValidationTests, InvalidDepth) {
DAWN_TEST_UNSUPPORTED_IF(UsesWire());
descriptor.size.depthOrArrayLayers = 2;
ASSERT_DEVICE_ERROR(wgpu::Texture texture = WrapIOSurface(&descriptor, defaultIOSurface.get()));
ASSERT_EQ(texture.Get(), nullptr);
}
// Test an error occurs if the descriptor sample count isn't 1
TEST_P(IOSurfaceValidationTests, InvalidSampleCount) {
DAWN_TEST_UNSUPPORTED_IF(UsesWire());
descriptor.sampleCount = 4;
ASSERT_DEVICE_ERROR(wgpu::Texture texture = WrapIOSurface(&descriptor, defaultIOSurface.get()));
ASSERT_EQ(texture.Get(), nullptr);
}
// Test an error occurs if the descriptor width doesn't match the surface's
TEST_P(IOSurfaceValidationTests, InvalidWidth) {
DAWN_TEST_UNSUPPORTED_IF(UsesWire());
descriptor.size.width = 11;
ASSERT_DEVICE_ERROR(wgpu::Texture texture = WrapIOSurface(&descriptor, defaultIOSurface.get()));
ASSERT_EQ(texture.Get(), nullptr);
}
// Test an error occurs if the descriptor height doesn't match the surface's
TEST_P(IOSurfaceValidationTests, InvalidHeight) {
DAWN_TEST_UNSUPPORTED_IF(UsesWire());
descriptor.size.height = 11;
ASSERT_DEVICE_ERROR(wgpu::Texture texture = WrapIOSurface(&descriptor, defaultIOSurface.get()));
ASSERT_EQ(texture.Get(), nullptr);
}
// Test an error occurs if the descriptor format isn't compatible with the IOSurface's
TEST_P(IOSurfaceValidationTests, InvalidFormat) {
DAWN_TEST_UNSUPPORTED_IF(UsesWire());
descriptor.format = wgpu::TextureFormat::R8Unorm;
ASSERT_DEVICE_ERROR(wgpu::Texture texture = WrapIOSurface(&descriptor, defaultIOSurface.get()));
ASSERT_EQ(texture.Get(), nullptr);
}
class IOSurfaceTransientAttachmentValidationTests : public IOSurfaceValidationTests {
void SetUp() override {
IOSurfaceValidationTests::SetUp();
// Skip all tests if the transient attachments feature is not supported.
DAWN_TEST_UNSUPPORTED_IF(!SupportsFeatures({wgpu::FeatureName::TransientAttachments}));
}
std::vector<wgpu::FeatureName> GetRequiredFeatures() override {
std::vector<wgpu::FeatureName> requiredFeatures = {};
if (SupportsFeatures({wgpu::FeatureName::TransientAttachments})) {
requiredFeatures.push_back(wgpu::FeatureName::TransientAttachments);
}
return requiredFeatures;
}
};
// Test that an error occurs if the transient attachment is specified.
TEST_P(IOSurfaceTransientAttachmentValidationTests, ErrorWhenSpecified) {
DAWN_TEST_UNSUPPORTED_IF(UsesWire());
descriptor.usage |= wgpu::TextureUsage::TransientAttachment;
ASSERT_DEVICE_ERROR(wgpu::Texture texture = WrapIOSurface(&descriptor, defaultIOSurface.get()));
ASSERT_EQ(texture.Get(), nullptr);
}
// Fixture to test using IOSurfaces through different usages.
// These tests are skipped if the harness is using the wire.
class IOSurfaceUsageTests : public IOSurfaceTestBase {
public:
// Test that sampling a 1x1 works.
void DoSampleTest(IOSurfaceRef ioSurface,
wgpu::TextureFormat format,
void* data,
size_t dataSize,
utils::RGBA8 expectedColor) {
// Write the data to the IOSurface
IOSurfaceLock(ioSurface, 0, nullptr);
memcpy(IOSurfaceGetBaseAddress(ioSurface), data, dataSize);
IOSurfaceUnlock(ioSurface, 0, nullptr);
// The simplest texture sampling pipeline.
wgpu::RenderPipeline pipeline;
{
wgpu::ShaderModule vs = utils::CreateShaderModule(device, R"(
struct VertexOut {
@location(0) texCoord : vec2f,
@builtin(position) position : vec4f,
}
@vertex
fn main(@builtin(vertex_index) VertexIndex : u32) -> VertexOut {
var pos = array(
vec2f(-2.0, -2.0),
vec2f(-2.0, 2.0),
vec2f( 2.0, -2.0),
vec2f(-2.0, 2.0),
vec2f( 2.0, -2.0),
vec2f( 2.0, 2.0));
var texCoord = array(
vec2f(0.0, 0.0),
vec2f(0.0, 1.0),
vec2f(1.0, 0.0),
vec2f(0.0, 1.0),
vec2f(1.0, 0.0),
vec2f(1.0, 1.0));
var output : VertexOut;
output.position = vec4f(pos[VertexIndex], 0.0, 1.0);
output.texCoord = texCoord[VertexIndex];
return output;
}
)");
wgpu::ShaderModule fs = utils::CreateShaderModule(device, R"(
@group(0) @binding(0) var sampler0 : sampler;
@group(0) @binding(1) var texture0 : texture_2d<f32>;
@fragment
fn main(@location(0) texCoord : vec2f) -> @location(0) vec4f {
return textureSample(texture0, sampler0, texCoord);
}
)");
utils::ComboRenderPipelineDescriptor descriptor;
descriptor.vertex.module = vs;
descriptor.cFragment.module = fs;
descriptor.cTargets[0].format = wgpu::TextureFormat::RGBA8Unorm;
pipeline = device.CreateRenderPipeline(&descriptor);
}
// The bindgroup containing the texture view for the ioSurface as well as the sampler.
wgpu::BindGroup bindGroup;
{
wgpu::TextureDescriptor textureDescriptor;
textureDescriptor.dimension = wgpu::TextureDimension::e2D;
textureDescriptor.format = format;
textureDescriptor.size = {1, 1, 1};
textureDescriptor.sampleCount = 1;
textureDescriptor.mipLevelCount = 1;
textureDescriptor.usage = wgpu::TextureUsage::TextureBinding;
wgpu::Texture wrappingTexture = WrapIOSurface(&textureDescriptor, ioSurface);
wgpu::TextureView textureView = wrappingTexture.CreateView();
wgpu::Sampler sampler = device.CreateSampler();
bindGroup = utils::MakeBindGroup(device, pipeline.GetBindGroupLayout(0),
{{0, sampler}, {1, textureView}});
}
// Submit commands samping from the ioSurface and writing the result to renderPass.color
utils::BasicRenderPass renderPass = utils::CreateBasicRenderPass(device, 1, 1);
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
{
wgpu::RenderPassEncoder pass = encoder.BeginRenderPass(&renderPass.renderPassInfo);
pass.SetPipeline(pipeline);
pass.SetBindGroup(0, bindGroup);
pass.Draw(6);
pass.End();
}
wgpu::CommandBuffer commands = encoder.Finish();
queue.Submit(1, &commands);
EXPECT_PIXEL_RGBA8_EQ(expectedColor, renderPass.color, 0, 0);
}
// Test that clearing using BeginRenderPass writes correct data in the ioSurface.
void DoClearTest(IOSurfaceRef ioSurface,
wgpu::TextureFormat format,
void* data,
size_t dataSize) {
// Get a texture view for the ioSurface
wgpu::TextureDescriptor textureDescriptor;
textureDescriptor.dimension = wgpu::TextureDimension::e2D;
textureDescriptor.format = format;
textureDescriptor.size = {1, 1, 1};
textureDescriptor.sampleCount = 1;
textureDescriptor.mipLevelCount = 1;
textureDescriptor.usage = wgpu::TextureUsage::RenderAttachment;
wgpu::Texture ioSurfaceTexture = WrapIOSurface(&textureDescriptor, ioSurface);
wgpu::TextureView ioSurfaceView = ioSurfaceTexture.CreateView();
utils::ComboRenderPassDescriptor renderPassDescriptor({ioSurfaceView}, {});
renderPassDescriptor.cColorAttachments[0].clearValue = {1 / 255.0f, 2 / 255.0f, 3 / 255.0f,
4 / 255.0f};
// Execute commands to clear the ioSurface
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
wgpu::RenderPassEncoder pass = encoder.BeginRenderPass(&renderPassDescriptor);
pass.End();
wgpu::CommandBuffer commands = encoder.Finish();
queue.Submit(1, &commands);
// Wait for the commands touching the IOSurface to be scheduled
native::metal::WaitForCommandsToBeScheduled(device.Get());
// Check the correct data was written
IOSurfaceLock(ioSurface, kIOSurfaceLockReadOnly, nullptr);
ASSERT_EQ(0, memcmp(IOSurfaceGetBaseAddress(ioSurface), data, dataSize));
IOSurfaceUnlock(ioSurface, kIOSurfaceLockReadOnly, nullptr);
}
};
// Test sampling from a R8 IOSurface
TEST_P(IOSurfaceUsageTests, SampleFromR8IOSurface) {
DAWN_TEST_UNSUPPORTED_IF(UsesWire());
ScopedIOSurfaceRef ioSurface =
CreateSinglePlaneIOSurface(1, 1, kCVPixelFormatType_OneComponent8, 1);
uint8_t data = 0x01;
DoSampleTest(ioSurface.get(), wgpu::TextureFormat::R8Unorm, &data, sizeof(data),
utils::RGBA8(1, 0, 0, 255));
}
// Test clearing a R8 IOSurface
TEST_P(IOSurfaceUsageTests, ClearR8IOSurface) {
DAWN_TEST_UNSUPPORTED_IF(UsesWire());
ScopedIOSurfaceRef ioSurface =
CreateSinglePlaneIOSurface(1, 1, kCVPixelFormatType_OneComponent8, 1);
uint8_t data = 0x01;
DoClearTest(ioSurface.get(), wgpu::TextureFormat::R8Unorm, &data, sizeof(data));
}
// Test sampling from a RG8 IOSurface
TEST_P(IOSurfaceUsageTests, SampleFromRG8IOSurface) {
DAWN_TEST_UNSUPPORTED_IF(UsesWire());
ScopedIOSurfaceRef ioSurface =
CreateSinglePlaneIOSurface(1, 1, kCVPixelFormatType_TwoComponent8, 2);
uint16_t data = 0x0102; // Stored as (G, R)
DoSampleTest(ioSurface.get(), wgpu::TextureFormat::RG8Unorm, &data, sizeof(data),
utils::RGBA8(2, 1, 0, 255));
}
// Test clearing a RG8 IOSurface
TEST_P(IOSurfaceUsageTests, ClearRG8IOSurface) {
DAWN_TEST_UNSUPPORTED_IF(UsesWire());
ScopedIOSurfaceRef ioSurface =
CreateSinglePlaneIOSurface(1, 1, kCVPixelFormatType_TwoComponent8, 2);
uint16_t data = 0x0201;
DoClearTest(ioSurface.get(), wgpu::TextureFormat::RG8Unorm, &data, sizeof(data));
}
// Test sampling from a BGRA8 IOSurface
TEST_P(IOSurfaceUsageTests, SampleFromBGRA8IOSurface) {
DAWN_TEST_UNSUPPORTED_IF(UsesWire());
ScopedIOSurfaceRef ioSurface = CreateSinglePlaneIOSurface(1, 1, kCVPixelFormatType_32BGRA, 4);
uint32_t data = 0x01020304; // Stored as (A, R, G, B)
DoSampleTest(ioSurface.get(), wgpu::TextureFormat::BGRA8Unorm, &data, sizeof(data),
utils::RGBA8(2, 3, 4, 1));
}
// Test clearing a BGRA8 IOSurface
TEST_P(IOSurfaceUsageTests, ClearBGRA8IOSurface) {
DAWN_TEST_UNSUPPORTED_IF(UsesWire());
ScopedIOSurfaceRef ioSurface = CreateSinglePlaneIOSurface(1, 1, kCVPixelFormatType_32BGRA, 4);
uint32_t data = 0x04010203;
DoClearTest(ioSurface.get(), wgpu::TextureFormat::BGRA8Unorm, &data, sizeof(data));
}
// Test sampling from an RGBA8 IOSurface
TEST_P(IOSurfaceUsageTests, SampleFromRGBA8IOSurface) {
DAWN_TEST_UNSUPPORTED_IF(UsesWire());
ScopedIOSurfaceRef ioSurface = CreateSinglePlaneIOSurface(1, 1, kCVPixelFormatType_32RGBA, 4);
uint32_t data = 0x01020304; // Stored as (A, B, G, R)
DoSampleTest(ioSurface.get(), wgpu::TextureFormat::RGBA8Unorm, &data, sizeof(data),
utils::RGBA8(4, 3, 2, 1));
}
// Test clearing an RGBA8 IOSurface
TEST_P(IOSurfaceUsageTests, ClearRGBA8IOSurface) {
DAWN_TEST_UNSUPPORTED_IF(UsesWire());
ScopedIOSurfaceRef ioSurface = CreateSinglePlaneIOSurface(1, 1, kCVPixelFormatType_32RGBA, 4);
uint32_t data = 0x04030201;
DoClearTest(ioSurface.get(), wgpu::TextureFormat::RGBA8Unorm, &data, sizeof(data));
}
// Test that texture with color is cleared when isInitialized = false
TEST_P(IOSurfaceUsageTests, UninitializedTextureIsCleared) {
DAWN_TEST_UNSUPPORTED_IF(UsesWire());
ScopedIOSurfaceRef ioSurface = CreateSinglePlaneIOSurface(1, 1, kCVPixelFormatType_32RGBA, 4);
uint32_t data = 0x04030201;
IOSurfaceLock(ioSurface.get(), 0, nullptr);
memcpy(IOSurfaceGetBaseAddress(ioSurface.get()), &data, sizeof(data));
IOSurfaceUnlock(ioSurface.get(), 0, nullptr);
wgpu::TextureDescriptor textureDescriptor;
textureDescriptor.dimension = wgpu::TextureDimension::e2D;
textureDescriptor.format = wgpu::TextureFormat::RGBA8Unorm;
textureDescriptor.size = {1, 1, 1};
textureDescriptor.sampleCount = 1;
textureDescriptor.mipLevelCount = 1;
textureDescriptor.usage = wgpu::TextureUsage::RenderAttachment | wgpu::TextureUsage::CopySrc;
// wrap ioSurface and ensure color is not visible when isInitialized set to false
wgpu::Texture ioSurfaceTexture = WrapIOSurface(&textureDescriptor, ioSurface.get(), false);
EXPECT_PIXEL_RGBA8_EQ(utils::RGBA8(0, 0, 0, 0), ioSurfaceTexture, 0, 0);
native::metal::ExternalImageIOSurfaceEndAccessDescriptor endAccessDesc;
native::metal::IOSurfaceEndAccess(ioSurfaceTexture.Get(), &endAccessDesc);
EXPECT_TRUE(endAccessDesc.isInitialized);
}
// Test that exporting a texture wrapping an IOSurface sets the isInitialized bit to
// false if the contents are discard.
TEST_P(IOSurfaceUsageTests, UninitializedOnEndAccess) {
DAWN_TEST_UNSUPPORTED_IF(UsesWire());
ScopedIOSurfaceRef ioSurface = CreateSinglePlaneIOSurface(1, 1, kCVPixelFormatType_32RGBA, 4);
uint32_t data = 0x04030201;
IOSurfaceLock(ioSurface.get(), 0, nullptr);
memcpy(IOSurfaceGetBaseAddress(ioSurface.get()), &data, sizeof(data));
IOSurfaceUnlock(ioSurface.get(), 0, nullptr);
wgpu::TextureDescriptor textureDescriptor;
textureDescriptor.dimension = wgpu::TextureDimension::e2D;
textureDescriptor.format = wgpu::TextureFormat::RGBA8Unorm;
textureDescriptor.size = {1, 1, 1};
textureDescriptor.sampleCount = 1;
textureDescriptor.mipLevelCount = 1;
textureDescriptor.usage = wgpu::TextureUsage::RenderAttachment | wgpu::TextureUsage::CopySrc;
// Wrap ioSurface
wgpu::Texture ioSurfaceTexture = WrapIOSurface(&textureDescriptor, ioSurface.get(), true);
// Uninitialize the teuxture with a render pass.
utils::ComboRenderPassDescriptor renderPassDescriptor({ioSurfaceTexture.CreateView()});
renderPassDescriptor.cColorAttachments[0].storeOp = wgpu::StoreOp::Discard;
wgpu::CommandEncoder encoder = device.CreateCommandEncoder();
encoder.BeginRenderPass(&renderPassDescriptor).End();
wgpu::CommandBuffer commandBuffer = encoder.Finish();
queue.Submit(1, &commandBuffer);
native::metal::ExternalImageIOSurfaceEndAccessDescriptor endAccessDesc;
native::metal::IOSurfaceEndAccess(ioSurfaceTexture.Get(), &endAccessDesc);
EXPECT_FALSE(endAccessDesc.isInitialized);
}
// Test that an IOSurface may be imported across multiple devices.
TEST_P(IOSurfaceUsageTests, WriteThenConcurrentReadThenWrite) {
DAWN_TEST_UNSUPPORTED_IF(UsesWire());
ScopedIOSurfaceRef ioSurface = CreateSinglePlaneIOSurface(1, 1, kCVPixelFormatType_32RGBA, 4);
uint32_t data = 0x04030201;
IOSurfaceLock(ioSurface.get(), 0, nullptr);
memcpy(IOSurfaceGetBaseAddress(ioSurface.get()), &data, sizeof(data));
IOSurfaceUnlock(ioSurface.get(), 0, nullptr);
// Make additional devices. We will import with the writeDevice, then read it concurrently with
// both readDevices.
wgpu::Device writeDevice = device;
wgpu::Device readDevice1 = CreateDevice();
wgpu::Device readDevice2 = CreateDevice();
wgpu::TextureDescriptor textureDesc;
textureDesc.dimension = wgpu::TextureDimension::e2D;
textureDesc.format = wgpu::TextureFormat::RGBA8Unorm;
textureDesc.size = {1, 1, 1};
textureDesc.sampleCount = 1;
textureDesc.mipLevelCount = 1;
textureDesc.usage = wgpu::TextureUsage::RenderAttachment | wgpu::TextureUsage::CopySrc;
// Wrap ioSurface
native::metal::ExternalImageDescriptorIOSurface writeExternDesc;
writeExternDesc.cTextureDescriptor =
reinterpret_cast<const WGPUTextureDescriptor*>(&textureDesc);
writeExternDesc.ioSurface = ioSurface.get();
writeExternDesc.isInitialized = true;
wgpu::Texture writeTexture =
wgpu::Texture::Acquire(native::metal::WrapIOSurface(writeDevice.Get(), &writeExternDesc));
// Clear the texture to green.
{
utils::ComboRenderPassDescriptor renderPassDescriptor({writeTexture.CreateView()});
renderPassDescriptor.cColorAttachments[0].clearValue = {0.0, 1.0, 0.0, 1.0};
wgpu::CommandEncoder encoder = writeDevice.CreateCommandEncoder();
encoder.BeginRenderPass(&renderPassDescriptor).End();
wgpu::CommandBuffer commandBuffer = encoder.Finish();
writeDevice.GetQueue().Submit(1, &commandBuffer);
}
// End access.
native::metal::ExternalImageIOSurfaceEndAccessDescriptor endWriteAccessDesc;
native::metal::IOSurfaceEndAccess(writeTexture.Get(), &endWriteAccessDesc);
EXPECT_TRUE(endWriteAccessDesc.isInitialized);
native::metal::ExternalImageDescriptorIOSurface externDesc;
externDesc.cTextureDescriptor = reinterpret_cast<const WGPUTextureDescriptor*>(&textureDesc);
externDesc.ioSurface = ioSurface.get();
externDesc.isInitialized = true;
externDesc.waitEvents.push_back(
{endWriteAccessDesc.sharedEvent, endWriteAccessDesc.signaledValue});
// Wrap on two separate devices to read it.
wgpu::Texture readTexture1 =
wgpu::Texture::Acquire(native::metal::WrapIOSurface(readDevice1.Get(), &externDesc));
wgpu::Texture readTexture2 =
wgpu::Texture::Acquire(native::metal::WrapIOSurface(readDevice2.Get(), &externDesc));
// Expect the texture to be green
EXPECT_TEXTURE_EQ(readDevice1, utils::RGBA8(0, 255, 0, 255), readTexture1, {0, 0});
EXPECT_TEXTURE_EQ(readDevice2, utils::RGBA8(0, 255, 0, 255), readTexture2, {0, 0});
// End access on both read textures.
native::metal::ExternalImageIOSurfaceEndAccessDescriptor endReadAccessDesc1;
native::metal::IOSurfaceEndAccess(readTexture1.Get(), &endReadAccessDesc1);
EXPECT_TRUE(endReadAccessDesc1.isInitialized);
native::metal::ExternalImageIOSurfaceEndAccessDescriptor endReadAccessDesc2;
native::metal::IOSurfaceEndAccess(readTexture2.Get(), &endReadAccessDesc2);
EXPECT_TRUE(endReadAccessDesc2.isInitialized);
// Import again for writing. It should not race with the previous reads.
writeExternDesc.waitEvents = {endReadAccessDesc1, endReadAccessDesc2};
writeExternDesc.isInitialized = true;
writeTexture =
wgpu::Texture::Acquire(native::metal::WrapIOSurface(writeDevice.Get(), &writeExternDesc));
// Clear the texture to blue.
{
utils::ComboRenderPassDescriptor renderPassDescriptor({writeTexture.CreateView()});
renderPassDescriptor.cColorAttachments[0].clearValue = {0.0, 0.0, 1.0, 1.0};
wgpu::CommandEncoder encoder = writeDevice.CreateCommandEncoder();
encoder.BeginRenderPass(&renderPassDescriptor).End();
wgpu::CommandBuffer commandBuffer = encoder.Finish();
writeDevice.GetQueue().Submit(1, &commandBuffer);
}
// Finally, expect the contents to be blue now.
EXPECT_TEXTURE_EQ(writeDevice, utils::RGBA8(0, 0, 255, 255), writeTexture, {0, 0});
native::metal::IOSurfaceEndAccess(writeTexture.Get(), &endWriteAccessDesc);
EXPECT_TRUE(endWriteAccessDesc.isInitialized);
}
class IOSurfaceMultithreadTests : public IOSurfaceUsageTests {
protected:
std::vector<wgpu::FeatureName> GetRequiredFeatures() override {
std::vector<wgpu::FeatureName> features;
// TODO(crbug.com/dawn/1678): DawnWire doesn't support thread safe API yet.
if (!UsesWire()) {
features.push_back(wgpu::FeatureName::ImplicitDeviceSynchronization);
}
return features;
}
void SetUp() override {
IOSurfaceUsageTests::SetUp();
// TODO(crbug.com/dawn/1678): DawnWire doesn't support thread safe API yet.
DAWN_TEST_UNSUPPORTED_IF(UsesWire());
}
};
// Test that texture with color is cleared when isInitialized = false. There shoudn't be any data
// race if multiple of them are created on multiple threads.
TEST_P(IOSurfaceMultithreadTests, UninitializedTexturesAreCleared_OnMultipleThreads) {
utils::RunInParallel(10, [this](uint32_t) {
ScopedIOSurfaceRef ioSurface =
CreateSinglePlaneIOSurface(1, 1, kCVPixelFormatType_32RGBA, 4);
uint32_t data = 0x04030201;
IOSurfaceLock(ioSurface.get(), 0, nullptr);
memcpy(IOSurfaceGetBaseAddress(ioSurface.get()), &data, sizeof(data));
IOSurfaceUnlock(ioSurface.get(), 0, nullptr);
wgpu::TextureDescriptor textureDescriptor;
textureDescriptor.dimension = wgpu::TextureDimension::e2D;
textureDescriptor.format = wgpu::TextureFormat::RGBA8Unorm;
textureDescriptor.size = {1, 1, 1};
textureDescriptor.sampleCount = 1;
textureDescriptor.mipLevelCount = 1;
textureDescriptor.usage =
wgpu::TextureUsage::RenderAttachment | wgpu::TextureUsage::CopySrc;
// wrap ioSurface and ensure color is not visible when isInitialized set to false
wgpu::Texture ioSurfaceTexture = WrapIOSurface(&textureDescriptor, ioSurface.get(), false);
EXPECT_PIXEL_RGBA8_EQ(utils::RGBA8(0, 0, 0, 0), ioSurfaceTexture, 0, 0);
native::metal::ExternalImageIOSurfaceEndAccessDescriptor endAccessDesc;
native::metal::IOSurfaceEndAccess(ioSurfaceTexture.Get(), &endAccessDesc);
EXPECT_TRUE(endAccessDesc.isInitialized);
});
}
// Test that wrapping multiple IOSurface and clear them on multiple threads work.
TEST_P(IOSurfaceMultithreadTests, WrapAndClear_OnMultipleThreads) {
utils::RunInParallel(10, [this](uint32_t) {
ScopedIOSurfaceRef ioSurface =
CreateSinglePlaneIOSurface(1, 1, kCVPixelFormatType_32BGRA, 4);
uint32_t data = 0x04010203;
DoClearTest(ioSurface.get(), wgpu::TextureFormat::BGRA8Unorm, &data, sizeof(data));
});
}
DAWN_INSTANTIATE_TEST(IOSurfaceValidationTests, MetalBackend());
DAWN_INSTANTIATE_TEST(IOSurfaceTransientAttachmentValidationTests, MetalBackend());
DAWN_INSTANTIATE_TEST(IOSurfaceUsageTests, MetalBackend());
DAWN_INSTANTIATE_TEST(IOSurfaceMultithreadTests, MetalBackend());
} // anonymous namespace
} // namespace dawn