Implement wrapping IOSurfaces in dawn::Texture.

This allows wrapping IOSurfaces in a dawn::Texture so a Dawn application
can sample from, or render to an IOSurface. It uses Metal's
functionality for wrapping textures in MTLTexture.

Support for single-plane BGRA8, RG8 and R8 IOSurfaces is added as well
as tests for sampling and using BeginRenderPass to clear them.

BUG=dawn:112

Change-Id: I367dbd1a75a0c7b81901fb0aae05f1cd46af3f3a
Reviewed-on: https://dawn-review.googlesource.com/c/5101
Commit-Queue: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Austin Eng <enga@chromium.org>
This commit is contained in:
Corentin Wallez 2019-03-01 12:01:18 +00:00 committed by Commit Bot service account
parent 2dfb3f01e7
commit 0cdf9e09c4
8 changed files with 592 additions and 39 deletions

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@ -564,6 +564,7 @@ source_set("libdawn_native_sources") {
"Metal.framework",
"Cocoa.framework",
"IOKit.framework",
"IOSurface.framework",
]
sources += [
"src/dawn_native/metal/BackendMTL.h",
@ -1018,6 +1019,14 @@ test("dawn_end2end_tests") {
"src/tests/end2end/ViewportOrientationTests.cpp",
]
libs = []
if (dawn_enable_metal) {
sources += [ "src/tests/end2end/IOSurfaceWrappingTests.cpp" ]
libs += [ "IOSurface.framework" ]
}
# When building inside Chromium, use their gtest main function because it is
# needed to run in swarming correctly.
if (build_with_chromium) {

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@ -51,6 +51,10 @@ namespace dawn_native { namespace metal {
MapRequestTracker* GetMapTracker() const;
TextureBase* CreateTextureWrappingIOSurface(const TextureDescriptor* descriptor,
IOSurfaceRef ioSurface,
uint32_t plane);
ResultOrError<std::unique_ptr<StagingBufferBase>> CreateStagingBuffer(size_t size) override;
MaybeError CopyFromStagingToBuffer(StagingBufferBase* source,
uint32_t sourceOffset,

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@ -204,4 +204,16 @@ namespace dawn_native { namespace metal {
return {};
}
TextureBase* Device::CreateTextureWrappingIOSurface(const TextureDescriptor* descriptor,
IOSurfaceRef ioSurface,
uint32_t plane) {
if (ConsumedError(ValidateTextureDescriptor(this, descriptor))) {
return nullptr;
}
if (ConsumedError(ValidateIOSurfaceCanBeWrapped(this, descriptor, ioSurface, plane))) {
return nullptr;
}
return new Texture(this, descriptor, ioSurface, plane);
}
}} // namespace dawn_native::metal

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@ -17,6 +17,7 @@
#include "dawn_native/MetalBackend.h"
#include "dawn_native/Texture.h"
#include "dawn_native/metal/DeviceMTL.h"
namespace dawn_native { namespace metal {
@ -26,4 +27,15 @@ namespace dawn_native { namespace metal {
return device->GetMTLDevice();
}
dawnTexture WrapIOSurface(dawnDevice cDevice,
const dawnTextureDescriptor* cDescriptor,
IOSurfaceRef ioSurface,
uint32_t plane) {
Device* device = reinterpret_cast<Device*>(cDevice);
const TextureDescriptor* descriptor =
reinterpret_cast<const TextureDescriptor*>(cDescriptor);
TextureBase* texture = device->CreateTextureWrappingIOSurface(descriptor, ioSurface, plane);
return reinterpret_cast<dawnTexture>(texture);
}
}} // namespace dawn_native::metal

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@ -24,11 +24,19 @@ namespace dawn_native { namespace metal {
class Device;
MTLPixelFormat MetalPixelFormat(dawn::TextureFormat format);
MaybeError ValidateIOSurfaceCanBeWrapped(const DeviceBase* device,
const TextureDescriptor* descriptor,
IOSurfaceRef ioSurface,
uint32_t plane);
class Texture : public TextureBase {
public:
Texture(Device* device, const TextureDescriptor* descriptor);
Texture(Device* device, const TextureDescriptor* descriptor, id<MTLTexture> mtlTexture);
Texture(Device* device,
const TextureDescriptor* descriptor,
IOSurfaceRef ioSurface,
uint32_t plane);
~Texture();
id<MTLTexture> GetMTLTexture();

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@ -16,27 +16,9 @@
#include "dawn_native/metal/DeviceMTL.h"
#include <IOSurface/IOSurface.h>
namespace dawn_native { namespace metal {
MTLPixelFormat MetalPixelFormat(dawn::TextureFormat format) {
switch (format) {
case dawn::TextureFormat::R8G8B8A8Unorm:
return MTLPixelFormatRGBA8Unorm;
case dawn::TextureFormat::R8G8Unorm:
return MTLPixelFormatRG8Unorm;
case dawn::TextureFormat::R8Unorm:
return MTLPixelFormatR8Unorm;
case dawn::TextureFormat::R8G8B8A8Uint:
return MTLPixelFormatRGBA8Uint;
case dawn::TextureFormat::R8G8Uint:
return MTLPixelFormatRG8Uint;
case dawn::TextureFormat::R8Uint:
return MTLPixelFormatR8Uint;
case dawn::TextureFormat::B8G8R8A8Unorm:
return MTLPixelFormatBGRA8Unorm;
case dawn::TextureFormat::D32FloatS8Uint:
return MTLPixelFormatDepth32Float_Stencil8;
}
}
namespace {
bool UsageNeedsTextureView(dawn::TextureUsageBit usage) {
@ -115,27 +97,107 @@ namespace dawn_native { namespace metal {
return false;
}
ResultOrError<dawn::TextureFormat> GetFormatEquivalentToIOSurfaceFormat(uint32_t format) {
switch (format) {
case 'BGRA':
return dawn::TextureFormat::B8G8R8A8Unorm;
case '2C08':
return dawn::TextureFormat::R8G8Unorm;
case 'L008':
return dawn::TextureFormat::R8Unorm;
default:
return DAWN_VALIDATION_ERROR("Unsupported IOSurface format");
}
}
}
MTLPixelFormat MetalPixelFormat(dawn::TextureFormat format) {
switch (format) {
case dawn::TextureFormat::R8G8B8A8Unorm:
return MTLPixelFormatRGBA8Unorm;
case dawn::TextureFormat::R8G8Unorm:
return MTLPixelFormatRG8Unorm;
case dawn::TextureFormat::R8Unorm:
return MTLPixelFormatR8Unorm;
case dawn::TextureFormat::R8G8B8A8Uint:
return MTLPixelFormatRGBA8Uint;
case dawn::TextureFormat::R8G8Uint:
return MTLPixelFormatRG8Uint;
case dawn::TextureFormat::R8Uint:
return MTLPixelFormatR8Uint;
case dawn::TextureFormat::B8G8R8A8Unorm:
return MTLPixelFormatBGRA8Unorm;
case dawn::TextureFormat::D32FloatS8Uint:
return MTLPixelFormatDepth32Float_Stencil8;
}
}
MaybeError ValidateIOSurfaceCanBeWrapped(const DeviceBase*,
const TextureDescriptor* descriptor,
IOSurfaceRef ioSurface,
uint32_t plane) {
// IOSurfaceGetPlaneCount can return 0 for non-planar IOSurfaces but we will treat
// non-planar like it is a single plane.
size_t surfacePlaneCount = std::max(size_t(1), IOSurfaceGetPlaneCount(ioSurface));
if (plane >= surfacePlaneCount) {
return DAWN_VALIDATION_ERROR("IOSurface plane doesn't exist");
}
if (descriptor->dimension != dawn::TextureDimension::e2D) {
return DAWN_VALIDATION_ERROR("IOSurface texture must be 2D");
}
if (descriptor->mipLevelCount != 1) {
return DAWN_VALIDATION_ERROR("IOSurface mip level count must be 1");
}
if (descriptor->arrayLayerCount != 1) {
return DAWN_VALIDATION_ERROR("IOSurface array layer count must be 1");
}
if (descriptor->sampleCount != 1) {
return DAWN_VALIDATION_ERROR("IOSurface sample count must be 1");
}
if (descriptor->size.width != IOSurfaceGetWidthOfPlane(ioSurface, plane) ||
descriptor->size.height != IOSurfaceGetHeightOfPlane(ioSurface, plane) ||
descriptor->size.depth != 1) {
return DAWN_VALIDATION_ERROR("IOSurface size doesn't match descriptor");
}
dawn::TextureFormat ioSurfaceFormat;
DAWN_TRY_ASSIGN(ioSurfaceFormat,
GetFormatEquivalentToIOSurfaceFormat(IOSurfaceGetPixelFormat(ioSurface)));
if (descriptor->format != ioSurfaceFormat) {
return DAWN_VALIDATION_ERROR("IOSurface format doesn't match descriptor");
}
return {};
}
MTLTextureDescriptor* CreateMetalTextureDescriptor(const TextureDescriptor* descriptor) {
MTLTextureDescriptor* mtlDesc = [MTLTextureDescriptor new];
mtlDesc.textureType = MetalTextureType(descriptor->dimension, descriptor->arrayLayerCount);
mtlDesc.usage = MetalTextureUsage(descriptor->usage);
mtlDesc.pixelFormat = MetalPixelFormat(descriptor->format);
mtlDesc.width = descriptor->size.width;
mtlDesc.height = descriptor->size.height;
mtlDesc.depth = descriptor->size.depth;
mtlDesc.mipmapLevelCount = descriptor->mipLevelCount;
mtlDesc.arrayLength = descriptor->arrayLayerCount;
mtlDesc.storageMode = MTLStorageModePrivate;
return mtlDesc;
}
Texture::Texture(Device* device, const TextureDescriptor* descriptor)
: TextureBase(device, descriptor) {
auto desc = [MTLTextureDescriptor new];
[desc autorelease];
desc.textureType = MetalTextureType(GetDimension(), GetArrayLayers());
desc.usage = MetalTextureUsage(GetUsage());
desc.pixelFormat = MetalPixelFormat(GetFormat());
const Extent3D& size = GetSize();
desc.width = size.width;
desc.height = size.height;
desc.depth = size.depth;
desc.mipmapLevelCount = GetNumMipLevels();
desc.arrayLength = GetArrayLayers();
desc.storageMode = MTLStorageModePrivate;
auto mtlDevice = device->GetMTLDevice();
mMtlTexture = [mtlDevice newTextureWithDescriptor:desc];
MTLTextureDescriptor* mtlDesc = CreateMetalTextureDescriptor(descriptor);
mMtlTexture = [device->GetMTLDevice() newTextureWithDescriptor:mtlDesc];
[mtlDesc release];
}
Texture::Texture(Device* device, const TextureDescriptor* descriptor, id<MTLTexture> mtlTexture)
@ -143,6 +205,18 @@ namespace dawn_native { namespace metal {
[mMtlTexture retain];
}
Texture::Texture(Device* device,
const TextureDescriptor* descriptor,
IOSurfaceRef ioSurface,
uint32_t plane)
: TextureBase(device, descriptor) {
MTLTextureDescriptor* mtlDesc = CreateMetalTextureDescriptor(descriptor);
mMtlTexture = [device->GetMTLDevice() newTextureWithDescriptor:mtlDesc
iosurface:ioSurface
plane:plane];
[mtlDesc release];
}
Texture::~Texture() {
[mMtlTexture release];
}

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@ -18,10 +18,24 @@
#include <dawn/dawn_wsi.h>
#include <dawn_native/DawnNative.h>
#import <Metal/Metal.h>
struct __IOSurface;
typedef __IOSurface* IOSurfaceRef;
#ifdef __OBJC__
# import <Metal/Metal.h>
#endif //__OBJC__
namespace dawn_native { namespace metal {
DAWN_NATIVE_EXPORT dawnTexture WrapIOSurface(dawnDevice device,
const dawnTextureDescriptor* descriptor,
IOSurfaceRef ioSurface,
uint32_t plane);
}} // namespace dawn_native::metal
#ifdef __OBJC__
namespace dawn_native { namespace metal {
DAWN_NATIVE_EXPORT id<MTLDevice> GetMetalDevice(dawnDevice device);
}} // namespace dawn_native::metal
#endif // __OBJC__
#endif // DAWNNATIVE_METALBACKEND_H_

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@ -0,0 +1,420 @@
// 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 "dawn_native/MetalBackend.h"
#include "utils/ComboRenderPipelineDescriptor.h"
#include "utils/DawnHelpers.h"
#include <CoreFoundation/CoreFoundation.h>
#include <IOSurface/IOSurface.h>
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:
dawn::Texture WrapIOSurface(const dawn::TextureDescriptor* descriptor,
IOSurfaceRef ioSurface,
uint32_t plane) {
dawnTexture texture = dawn_native::metal::WrapIOSurface(
device.Get(), reinterpret_cast<const dawnTextureDescriptor*>(descriptor), ioSurface,
plane);
return dawn::Texture::Acquire(texture);
}
};
} // anonymous namespace
// A small fixture used to initialize default data for the IOSurface validation tests.
class IOSurfaceValidationTests : public IOSurfaceTestBase {
public:
IOSurfaceValidationTests() {
defaultIOSurface = CreateSinglePlaneIOSurface(10, 10, 'BGRA', 4);
descriptor.dimension = dawn::TextureDimension::e2D;
descriptor.format = dawn::TextureFormat::B8G8R8A8Unorm;
descriptor.size = {10, 10, 1};
descriptor.sampleCount = 1;
descriptor.arrayLayerCount = 1;
descriptor.mipLevelCount = 1;
descriptor.usage = dawn::TextureUsageBit::OutputAttachment;
}
protected:
dawn::TextureDescriptor descriptor;
ScopedIOSurfaceRef defaultIOSurface;
};
// Test a successful wrapping of an IOSurface in a texture
TEST_P(IOSurfaceValidationTests, Success) {
dawn::Texture texture = WrapIOSurface(&descriptor, defaultIOSurface.get(), 0);
ASSERT_NE(texture.Get(), nullptr);
}
// Test an error occurs if the texture descriptor is invalid
TEST_P(IOSurfaceValidationTests, InvalidTextureDescriptor) {
descriptor.nextInChain = this;
ASSERT_DEVICE_ERROR(dawn::Texture texture =
WrapIOSurface(&descriptor, defaultIOSurface.get(), 0));
ASSERT_EQ(texture.Get(), nullptr);
}
// Test an error occurs if the plane is too large
TEST_P(IOSurfaceValidationTests, PlaneTooLarge) {
ASSERT_DEVICE_ERROR(dawn::Texture texture =
WrapIOSurface(&descriptor, defaultIOSurface.get(), 1));
ASSERT_EQ(texture.Get(), nullptr);
}
// Test an error occurs if the descriptor dimension isn't 2D
// TODO(cwallez@chromium.org): Reenable when 1D or 3D textures are implemented
TEST_P(IOSurfaceValidationTests, DISABLED_InvalidTextureDimension) {
descriptor.dimension = dawn::TextureDimension::e2D;
ASSERT_DEVICE_ERROR(dawn::Texture texture =
WrapIOSurface(&descriptor, defaultIOSurface.get(), 0));
ASSERT_EQ(texture.Get(), nullptr);
}
// Test an error occurs if the descriptor mip level count isn't 1
TEST_P(IOSurfaceValidationTests, InvalidMipLevelCount) {
descriptor.mipLevelCount = 2;
ASSERT_DEVICE_ERROR(dawn::Texture texture =
WrapIOSurface(&descriptor, defaultIOSurface.get(), 0));
ASSERT_EQ(texture.Get(), nullptr);
}
// Test an error occurs if the descriptor array layer count isn't 1
TEST_P(IOSurfaceValidationTests, InvalidArrayLayerCount) {
descriptor.arrayLayerCount = 2;
ASSERT_DEVICE_ERROR(dawn::Texture texture =
WrapIOSurface(&descriptor, defaultIOSurface.get(), 0));
ASSERT_EQ(texture.Get(), nullptr);
}
// Test an error occurs if the descriptor sample count isn't 1
TEST_P(IOSurfaceValidationTests, InvalidSampleCount) {
descriptor.sampleCount = 4;
ASSERT_DEVICE_ERROR(dawn::Texture texture =
WrapIOSurface(&descriptor, defaultIOSurface.get(), 0));
ASSERT_EQ(texture.Get(), nullptr);
}
// Test an error occurs if the descriptor width doesn't match the surface's
TEST_P(IOSurfaceValidationTests, InvalidWidth) {
descriptor.size.width = 11;
ASSERT_DEVICE_ERROR(dawn::Texture texture =
WrapIOSurface(&descriptor, defaultIOSurface.get(), 0));
ASSERT_EQ(texture.Get(), nullptr);
}
// Test an error occurs if the descriptor height doesn't match the surface's
TEST_P(IOSurfaceValidationTests, InvalidHeight) {
descriptor.size.height = 11;
ASSERT_DEVICE_ERROR(dawn::Texture texture =
WrapIOSurface(&descriptor, defaultIOSurface.get(), 0));
ASSERT_EQ(texture.Get(), nullptr);
}
// Test an error occurs if the descriptor format isn't compatible with the IOSurface's
TEST_P(IOSurfaceValidationTests, InvalidFormat) {
descriptor.format = dawn::TextureFormat::R8Unorm;
ASSERT_DEVICE_ERROR(dawn::Texture texture =
WrapIOSurface(&descriptor, defaultIOSurface.get(), 0));
ASSERT_EQ(texture.Get(), nullptr);
}
// Fixture to test using IOSurfaces through different usages.
class IOSurfaceUsageTests : public IOSurfaceTestBase {
public:
// Test that sampling a 1x1 works.
void DoSampleTest(IOSurfaceRef ioSurface,
dawn::TextureFormat format,
void* data,
size_t dataSize,
RGBA8 expectedColor) {
// Write the data to the IOSurface
IOSurfaceLock(ioSurface, 0, nullptr);
memcpy(IOSurfaceGetBaseAddress(ioSurface), data, dataSize);
IOSurfaceUnlock(ioSurface, 0, nullptr);
// The bindgroup containing the texture view for the ioSurface as well as the sampler.
dawn::BindGroupLayout bgl;
dawn::BindGroup bindGroup;
{
dawn::TextureDescriptor textureDescriptor;
textureDescriptor.dimension = dawn::TextureDimension::e2D;
textureDescriptor.format = format;
textureDescriptor.size = {1, 1, 1};
textureDescriptor.sampleCount = 1;
textureDescriptor.arrayLayerCount = 1;
textureDescriptor.mipLevelCount = 1;
textureDescriptor.usage = dawn::TextureUsageBit::Sampled;
dawn::Texture wrappingTexture = WrapIOSurface(&textureDescriptor, ioSurface, 0);
dawn::TextureView textureView = wrappingTexture.CreateDefaultTextureView();
dawn::SamplerDescriptor samplerDescriptor = utils::GetDefaultSamplerDescriptor();
dawn::Sampler sampler = device.CreateSampler(&samplerDescriptor);
bgl = utils::MakeBindGroupLayout(
device, {
{0, dawn::ShaderStageBit::Fragment, dawn::BindingType::Sampler},
{1, dawn::ShaderStageBit::Fragment, dawn::BindingType::SampledTexture},
});
bindGroup = utils::MakeBindGroup(device, bgl, {{0, sampler}, {1, textureView}});
}
// The simplest texture sampling pipeline.
dawn::RenderPipeline pipeline;
{
dawn::ShaderModule vs = utils::CreateShaderModule(device, dawn::ShaderStage::Vertex, R"(
#version 450
layout (location = 0) out vec2 o_texCoord;
void main() {
const vec2 pos[6] = vec2[6](vec2(-2.f, -2.f),
vec2(-2.f, 2.f),
vec2( 2.f, -2.f),
vec2(-2.f, 2.f),
vec2( 2.f, -2.f),
vec2( 2.f, 2.f));
const vec2 texCoord[6] = vec2[6](vec2(0.f, 0.f),
vec2(0.f, 1.f),
vec2(1.f, 0.f),
vec2(0.f, 1.f),
vec2(1.f, 0.f),
vec2(1.f, 1.f));
gl_Position = vec4(pos[gl_VertexIndex], 0.f, 1.f);
o_texCoord = texCoord[gl_VertexIndex];
}
)");
dawn::ShaderModule fs =
utils::CreateShaderModule(device, dawn::ShaderStage::Fragment, R"(
#version 450
layout(set = 0, binding = 0) uniform sampler sampler0;
layout(set = 0, binding = 1) uniform texture2D texture0;
layout(location = 0) in vec2 texCoord;
layout(location = 0) out vec4 fragColor;
void main() {
fragColor = texture(sampler2D(texture0, sampler0), texCoord);
}
)");
utils::ComboRenderPipelineDescriptor descriptor(device);
descriptor.cVertexStage.module = vs;
descriptor.cFragmentStage.module = fs;
descriptor.layout = utils::MakeBasicPipelineLayout(device, &bgl);
descriptor.cColorStates[0]->format = dawn::TextureFormat::R8G8B8A8Unorm;
pipeline = device.CreateRenderPipeline(&descriptor);
}
// Submit commands samping from the ioSurface and writing the result to renderPass.color
utils::BasicRenderPass renderPass = utils::CreateBasicRenderPass(device, 1, 1);
dawn::CommandEncoder encoder = device.CreateCommandEncoder();
{
dawn::RenderPassEncoder pass = encoder.BeginRenderPass(&renderPass.renderPassInfo);
pass.SetPipeline(pipeline);
pass.SetBindGroup(0, bindGroup);
pass.Draw(6, 1, 0, 0);
pass.EndPass();
}
dawn::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,
dawn::TextureFormat format,
void* data,
size_t dataSize) {
// Get a texture view for the ioSurface
dawn::TextureDescriptor textureDescriptor;
textureDescriptor.dimension = dawn::TextureDimension::e2D;
textureDescriptor.format = format;
textureDescriptor.size = {1, 1, 1};
textureDescriptor.sampleCount = 1;
textureDescriptor.arrayLayerCount = 1;
textureDescriptor.mipLevelCount = 1;
textureDescriptor.usage = dawn::TextureUsageBit::OutputAttachment;
dawn::Texture ioSurfaceTexture = WrapIOSurface(&textureDescriptor, ioSurface, 0);
dawn::TextureView ioSurfaceView = ioSurfaceTexture.CreateDefaultTextureView();
utils::ComboRenderPassDescriptor renderPassDescriptor({ioSurfaceView}, {});
renderPassDescriptor.cColorAttachmentsInfoPtr[0]->clearColor = {1 / 255.0f, 2 / 255.0f,
3 / 255.0f, 4 / 255.0f};
// Execute commands to clear the ioSurface
dawn::CommandEncoder encoder = device.CreateCommandEncoder();
dawn::RenderPassEncoder pass = encoder.BeginRenderPass(&renderPassDescriptor);
pass.EndPass();
dawn::CommandBuffer commands = encoder.Finish();
queue.Submit(1, &commands);
// Use a fence to know that GPU rendering is finished.
// TODO(cwallez@chromium.org): IOSurfaceLock should wait for previous GPU use of the
// IOSurface to be completed but this appears to not be the case.
// Maybe it is because the Metal command buffer has been submitted but not "scheduled" yet?
dawn::FenceDescriptor fenceDescriptor;
fenceDescriptor.initialValue = 0u;
dawn::Fence fence = device.CreateFence(&fenceDescriptor);
queue.Signal(fence, 1);
while (fence.GetCompletedValue() < 1) {
WaitABit();
}
// 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) {
ScopedIOSurfaceRef ioSurface = CreateSinglePlaneIOSurface(1, 1, 'L008', 1);
uint8_t data = 0x01;
DoSampleTest(ioSurface.get(), dawn::TextureFormat::R8Unorm, &data, sizeof(data),
RGBA8(1, 0, 0, 255));
}
// Test clearing a R8 IOSurface
TEST_P(IOSurfaceUsageTests, ClearR8IOSurface) {
ScopedIOSurfaceRef ioSurface = CreateSinglePlaneIOSurface(1, 1, 'L008', 1);
uint8_t data = 0x01;
DoClearTest(ioSurface.get(), dawn::TextureFormat::R8Unorm, &data, sizeof(data));
}
// Test sampling from a RG8 IOSurface
TEST_P(IOSurfaceUsageTests, SampleFromRG8IOSurface) {
ScopedIOSurfaceRef ioSurface = CreateSinglePlaneIOSurface(1, 1, '2C08', 2);
uint16_t data = 0x0102; // Stored as (G, R)
DoSampleTest(ioSurface.get(), dawn::TextureFormat::R8G8Unorm, &data, sizeof(data),
RGBA8(2, 1, 0, 255));
}
// Test clearing a RG8 IOSurface
TEST_P(IOSurfaceUsageTests, ClearRG8IOSurface) {
ScopedIOSurfaceRef ioSurface = CreateSinglePlaneIOSurface(1, 1, '2C08', 2);
uint16_t data = 0x0201;
DoClearTest(ioSurface.get(), dawn::TextureFormat::R8G8Unorm, &data, sizeof(data));
}
// Test sampling from a BGRA8 IOSurface
TEST_P(IOSurfaceUsageTests, SampleFromBGRA8888IOSurface) {
ScopedIOSurfaceRef ioSurface = CreateSinglePlaneIOSurface(1, 1, 'BGRA', 4);
uint32_t data = 0x01020304; // Stored as (A, R, G, B)
DoSampleTest(ioSurface.get(), dawn::TextureFormat::B8G8R8A8Unorm, &data, sizeof(data),
RGBA8(2, 3, 4, 1));
}
// Test clearing a BGRA8 IOSurface
TEST_P(IOSurfaceUsageTests, ClearBGRA8IOSurface) {
ScopedIOSurfaceRef ioSurface = CreateSinglePlaneIOSurface(1, 1, 'BGRA', 4);
uint32_t data = 0x04010203;
DoClearTest(ioSurface.get(), dawn::TextureFormat::B8G8R8A8Unorm, &data, sizeof(data));
}
DAWN_INSTANTIATE_TEST(IOSurfaceValidationTests, MetalBackend);
DAWN_INSTANTIATE_TEST(IOSurfaceUsageTests, MetalBackend);