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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 "tests/unittests/validation/ValidationTest.h"
class RequestDeviceValidationTest : public ValidationTest {
protected:
void SetUp() {
DAWN_SKIP_TEST_IF(UsesWire());
ValidationTest::SetUp();
}
static void ExpectRequestDeviceSuccess(WGPURequestDeviceStatus status,
WGPUDevice cDevice,
const char* message,
void* userdata) {
wgpu::Device device = wgpu::Device::Acquire(cDevice);
EXPECT_EQ(status, WGPURequestDeviceStatus_Success);
EXPECT_NE(device, nullptr);
EXPECT_STREQ(message, nullptr);
if (userdata != nullptr) {
CallCheckDevice(static_cast<std::function<void(wgpu::Device)>*>(userdata),
std::move(device));
}
}
static void ExpectRequestDeviceError(WGPURequestDeviceStatus status,
WGPUDevice cDevice,
const char* message,
void* userdata) {
wgpu::Device device = wgpu::Device::Acquire(cDevice);
EXPECT_EQ(status, WGPURequestDeviceStatus_Error);
EXPECT_EQ(device, nullptr);
EXPECT_STRNE(message, nullptr);
}
template <typename F>
static void* CheckDevice(F&& f) {
return new std::function<void(wgpu::Device)>(f);
}
static void CallCheckDevice(std::function<void(wgpu::Device)>* f, wgpu::Device d) {
(*f)(std::move(d));
delete f;
}
};
// Test that requesting a device without specifying limits is valid.
TEST_F(RequestDeviceValidationTest, NoRequiredLimits) {
dawn_native::DeviceDescriptor descriptor;
adapter.RequestDevice(&descriptor, ExpectRequestDeviceSuccess,
CheckDevice([](wgpu::Device device) {
// Check one of the default limits.
wgpu::SupportedLimits limits;
device.GetLimits(&limits);
EXPECT_EQ(limits.limits.maxBindGroups, 4u);
}));
}
// Test that requesting a device with the default limits is valid.
TEST_F(RequestDeviceValidationTest, DefaultLimits) {
wgpu::RequiredLimits limits = {};
dawn_native::DeviceDescriptor descriptor;
descriptor.requiredLimits = reinterpret_cast<const WGPURequiredLimits*>(&limits);
adapter.RequestDevice(&descriptor, ExpectRequestDeviceSuccess,
CheckDevice([](wgpu::Device device) {
// Check one of the default limits.
wgpu::SupportedLimits limits;
device.GetLimits(&limits);
EXPECT_EQ(limits.limits.maxTextureArrayLayers, 256u);
}));
}
// Test that requesting a device where a required limit is above the maximum value.
TEST_F(RequestDeviceValidationTest, HigherIsBetter) {
wgpu::RequiredLimits limits = {};
dawn_native::DeviceDescriptor descriptor;
descriptor.requiredLimits = reinterpret_cast<const WGPURequiredLimits*>(&limits);
wgpu::SupportedLimits supportedLimits;
EXPECT_TRUE(adapter.GetLimits(reinterpret_cast<WGPUSupportedLimits*>(&supportedLimits)));
// If we can support better than the default, test below the max.
if (supportedLimits.limits.maxBindGroups > 4u) {
limits.limits.maxBindGroups = supportedLimits.limits.maxBindGroups - 1;
adapter.RequestDevice(
&descriptor, ExpectRequestDeviceSuccess, CheckDevice([&](wgpu::Device device) {
wgpu::SupportedLimits limits;
device.GetLimits(&limits);
// Check we got exactly the request.
EXPECT_EQ(limits.limits.maxBindGroups, supportedLimits.limits.maxBindGroups - 1);
// Check another default limit.
EXPECT_EQ(limits.limits.maxTextureArrayLayers, 256u);
}));
}
// Test the max.
limits.limits.maxBindGroups = supportedLimits.limits.maxBindGroups;
adapter.RequestDevice(
&descriptor, ExpectRequestDeviceSuccess, CheckDevice([&](wgpu::Device device) {
wgpu::SupportedLimits limits;
device.GetLimits(&limits);
// Check we got exactly the request.
EXPECT_EQ(limits.limits.maxBindGroups, supportedLimits.limits.maxBindGroups);
// Check another default limit.
EXPECT_EQ(limits.limits.maxTextureArrayLayers, 256u);
}));
// Test above the max.
limits.limits.maxBindGroups = supportedLimits.limits.maxBindGroups + 1;
adapter.RequestDevice(&descriptor, ExpectRequestDeviceError, nullptr);
// Test worse than the default
limits.limits.maxBindGroups = 3u;
adapter.RequestDevice(&descriptor, ExpectRequestDeviceSuccess,
CheckDevice([&](wgpu::Device device) {
wgpu::SupportedLimits limits;
device.GetLimits(&limits);
// Check we got the default.
EXPECT_EQ(limits.limits.maxBindGroups, 4u);
}));
}
// Test that requesting a device where a required limit is below the minimum value.
TEST_F(RequestDeviceValidationTest, LowerIsBetter) {
wgpu::RequiredLimits limits = {};
dawn_native::DeviceDescriptor descriptor;
descriptor.requiredLimits = reinterpret_cast<const WGPURequiredLimits*>(&limits);
wgpu::SupportedLimits supportedLimits;
EXPECT_TRUE(adapter.GetLimits(reinterpret_cast<WGPUSupportedLimits*>(&supportedLimits)));
// Test below the min.
limits.limits.minUniformBufferOffsetAlignment =
supportedLimits.limits.minUniformBufferOffsetAlignment / 2;
adapter.RequestDevice(&descriptor, ExpectRequestDeviceError, nullptr);
// Test the min.
limits.limits.minUniformBufferOffsetAlignment =
supportedLimits.limits.minUniformBufferOffsetAlignment;
adapter.RequestDevice(&descriptor, ExpectRequestDeviceSuccess,
CheckDevice([&](wgpu::Device device) {
wgpu::SupportedLimits limits;
device.GetLimits(&limits);
// Check we got exactly the request.
EXPECT_EQ(limits.limits.minUniformBufferOffsetAlignment,
supportedLimits.limits.minUniformBufferOffsetAlignment);
// Check another default limit.
EXPECT_EQ(limits.limits.maxTextureArrayLayers, 256u);
}));
// IF we can support better than the default, test above the min.
if (supportedLimits.limits.minUniformBufferOffsetAlignment > 256u) {
limits.limits.minUniformBufferOffsetAlignment =
supportedLimits.limits.minUniformBufferOffsetAlignment * 2;
adapter.RequestDevice(
&descriptor, ExpectRequestDeviceSuccess, CheckDevice([&](wgpu::Device device) {
wgpu::SupportedLimits limits;
device.GetLimits(&limits);
// Check we got exactly the request.
EXPECT_EQ(limits.limits.minUniformBufferOffsetAlignment,
supportedLimits.limits.minUniformBufferOffsetAlignment * 2);
// Check another default limit.
EXPECT_EQ(limits.limits.maxTextureArrayLayers, 256u);
}));
}
// Test worse than the default
limits.limits.minUniformBufferOffsetAlignment = 2u * 256u;
adapter.RequestDevice(&descriptor, ExpectRequestDeviceSuccess,
CheckDevice([&](wgpu::Device device) {
wgpu::SupportedLimits limits;
device.GetLimits(&limits);
// Check we got the default.
EXPECT_EQ(limits.limits.minUniformBufferOffsetAlignment, 256u);
}));
}
// Test that it is an error to request limits with an invalid chained struct
TEST_F(RequestDeviceValidationTest, InvalidChainedStruct) {
wgpu::PrimitiveDepthClampingState depthClamp = {};
wgpu::RequiredLimits limits = {};
limits.nextInChain = &depthClamp;
dawn_native::DeviceDescriptor descriptor;
descriptor.requiredLimits = reinterpret_cast<const WGPURequiredLimits*>(&limits);
adapter.RequestDevice(&descriptor, ExpectRequestDeviceError, nullptr);
}