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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 "utils/DawnHelpers.h"
#include <array>
class ComputeSharedMemoryTests : public DawnTest {
public:
static constexpr uint32_t kInstances = 11;
void BasicTest(const char* shader);
};
void ComputeSharedMemoryTests::BasicTest(const char* shader) {
auto bgl = utils::MakeBindGroupLayout(
device, {
{0, dawn::ShaderStage::Compute, dawn::BindingType::StorageBuffer},
});
// Set up shader and pipeline
auto module = utils::CreateShaderModule(device, utils::SingleShaderStage::Compute, shader);
auto pl = utils::MakeBasicPipelineLayout(device, &bgl);
dawn::ComputePipelineDescriptor csDesc;
csDesc.layout = pl;
csDesc.computeStage.module = module;
csDesc.computeStage.entryPoint = "main";
dawn::ComputePipeline pipeline = device.CreateComputePipeline(&csDesc);
// Set up dst storage buffer
dawn::BufferDescriptor dstDesc;
dstDesc.size = sizeof(uint32_t);
dstDesc.usage =
dawn::BufferUsage::Storage | dawn::BufferUsage::CopySrc | dawn::BufferUsage::CopyDst;
dawn::Buffer dst = device.CreateBuffer(&dstDesc);
const uint32_t zero = 0;
dst.SetSubData(0, sizeof(zero), &zero);
// Set up bind group and issue dispatch
dawn::BindGroup bindGroup = utils::MakeBindGroup(device, bgl, {
{0, dst, 0, sizeof(uint32_t)},
});
dawn::CommandBuffer commands;
{
dawn::CommandEncoder encoder = device.CreateCommandEncoder();
dawn::ComputePassEncoder pass = encoder.BeginComputePass();
pass.SetPipeline(pipeline);
pass.SetBindGroup(0, bindGroup, 0, nullptr);
pass.Dispatch(1, 1, 1);
pass.EndPass();
commands = encoder.Finish();
}
queue.Submit(1, &commands);
const uint32_t expected = kInstances;
EXPECT_BUFFER_U32_RANGE_EQ(&expected, dst, 0, 1);
}
// Basic shared memory test
TEST_P(ComputeSharedMemoryTests, Basic) {
BasicTest(R"(
#version 450
const uint kTileSize = 4;
const uint kInstances = 11;
layout(local_size_x = kTileSize, local_size_y = kTileSize, local_size_z = 1) in;
layout(std140, set = 0, binding = 0) buffer Dst { uint x; } dst;
shared uint tmp;
void main() {
uint index = gl_LocalInvocationID.y * kTileSize + gl_LocalInvocationID.x;
if (index == 0) {
tmp = 0;
}
barrier();
for (uint i = 0; i < kInstances; ++i) {
if (i == index) {
tmp++;
}
barrier();
}
if (index == 0) {
dst.x = tmp;
}
})");
}
DAWN_INSTANTIATE_TEST(ComputeSharedMemoryTests,
D3D12Backend,
MetalBackend,
OpenGLBackend,
VulkanBackend);