240 lines
8.2 KiB
C++
240 lines
8.2 KiB
C++
// Copyright 2017 The Dawn Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "SampleUtils.h"
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#include "common/Assert.h"
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#include "common/Platform.h"
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#include "utils/BackendBinding.h"
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#include "utils/TerribleCommandBuffer.h"
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#include <dawn/dawn.h>
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#include <dawn/dawn_wsi.h>
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#include <dawn/dawncpp.h>
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#include <dawn_native/DawnNative.h>
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#include <dawn_wire/WireClient.h>
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#include <dawn_wire/WireServer.h>
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#include "GLFW/glfw3.h"
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#include <algorithm>
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#include <cstring>
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#include <iostream>
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void PrintDeviceError(const char* message, dawn::CallbackUserdata) {
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std::cout << "Device error: " << message << std::endl;
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}
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void PrintGLFWError(int code, const char* message) {
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std::cout << "GLFW error: " << code << " - " << message << std::endl;
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}
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enum class CmdBufType {
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None,
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Terrible,
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//TODO(cwallez@chromium.org) double terrible cmdbuf
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};
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// Default to D3D12, Metal, Vulkan, OpenGL in that order as D3D12 and Metal are the preferred on
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// their respective platforms, and Vulkan is preferred to OpenGL
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#if defined(DAWN_ENABLE_BACKEND_D3D12)
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static dawn_native::BackendType backendType = dawn_native::BackendType::D3D12;
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#elif defined(DAWN_ENABLE_BACKEND_METAL)
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static dawn_native::BackendType backendType = dawn_native::BackendType::Metal;
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#elif defined(DAWN_ENABLE_BACKEND_OPENGL)
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static dawn_native::BackendType backendType = dawn_native::BackendType::OpenGL;
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#elif defined(DAWN_ENABLE_BACKEND_VULKAN)
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static dawn_native::BackendType backendType = dawn_native::BackendType::Vulkan;
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#else
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#error
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#endif
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static CmdBufType cmdBufType = CmdBufType::Terrible;
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static std::unique_ptr<dawn_native::Instance> instance;
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static utils::BackendBinding* binding = nullptr;
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static GLFWwindow* window = nullptr;
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static dawn_wire::WireServer* wireServer = nullptr;
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static dawn_wire::WireClient* wireClient = nullptr;
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static utils::TerribleCommandBuffer* c2sBuf = nullptr;
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static utils::TerribleCommandBuffer* s2cBuf = nullptr;
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dawn::Device CreateCppDawnDevice() {
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glfwSetErrorCallback(PrintGLFWError);
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if (!glfwInit()) {
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return dawn::Device();
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}
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// Create the test window and discover adapters using it (esp. for OpenGL)
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utils::SetupGLFWWindowHintsForBackend(backendType);
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window = glfwCreateWindow(640, 480, "Dawn window", nullptr, nullptr);
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if (!window) {
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return dawn::Device();
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}
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instance = std::make_unique<dawn_native::Instance>();
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utils::DiscoverAdapter(instance.get(), window, backendType);
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// Get an adapter for the backend to use, and create the device.
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dawn_native::Adapter backendAdapter;
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{
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std::vector<dawn_native::Adapter> adapters = instance->GetAdapters();
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auto adapterIt = std::find_if(adapters.begin(), adapters.end(),
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[](const dawn_native::Adapter adapter) -> bool {
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return adapter.GetBackendType() == backendType;
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});
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ASSERT(adapterIt != adapters.end());
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backendAdapter = *adapterIt;
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}
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DawnDevice backendDevice = backendAdapter.CreateDevice();
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DawnProcTable backendProcs = dawn_native::GetProcs();
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binding = utils::CreateBinding(backendType, window, backendDevice);
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if (binding == nullptr) {
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return dawn::Device();
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}
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// Choose whether to use the backend procs and devices directly, or set up the wire.
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DawnDevice cDevice = nullptr;
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DawnProcTable procs;
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switch (cmdBufType) {
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case CmdBufType::None:
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procs = backendProcs;
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cDevice = backendDevice;
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break;
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case CmdBufType::Terrible:
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{
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c2sBuf = new utils::TerribleCommandBuffer();
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s2cBuf = new utils::TerribleCommandBuffer();
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wireServer = new dawn_wire::WireServer(backendDevice, backendProcs, s2cBuf);
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c2sBuf->SetHandler(wireServer);
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wireClient = new dawn_wire::WireClient(c2sBuf);
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DawnDevice clientDevice = wireClient->GetDevice();
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DawnProcTable clientProcs = wireClient->GetProcs();
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s2cBuf->SetHandler(wireClient);
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procs = clientProcs;
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cDevice = clientDevice;
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}
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break;
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}
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dawnSetProcs(&procs);
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procs.deviceSetErrorCallback(cDevice, PrintDeviceError, 0);
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return dawn::Device::Acquire(cDevice);
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}
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uint64_t GetSwapChainImplementation() {
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return binding->GetSwapChainImplementation();
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}
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dawn::TextureFormat GetPreferredSwapChainTextureFormat() {
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DoFlush();
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return static_cast<dawn::TextureFormat>(binding->GetPreferredSwapChainTextureFormat());
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}
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dawn::SwapChain GetSwapChain(const dawn::Device &device) {
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dawn::SwapChainDescriptor swapChainDesc;
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swapChainDesc.implementation = GetSwapChainImplementation();
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return device.CreateSwapChain(&swapChainDesc);
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}
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dawn::TextureView CreateDefaultDepthStencilView(const dawn::Device& device) {
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dawn::TextureDescriptor descriptor;
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descriptor.dimension = dawn::TextureDimension::e2D;
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descriptor.size.width = 640;
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descriptor.size.height = 480;
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descriptor.size.depth = 1;
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descriptor.arrayLayerCount = 1;
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descriptor.sampleCount = 1;
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descriptor.format = dawn::TextureFormat::D32FloatS8Uint;
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descriptor.mipLevelCount = 1;
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descriptor.usage = dawn::TextureUsageBit::OutputAttachment;
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auto depthStencilTexture = device.CreateTexture(&descriptor);
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return depthStencilTexture.CreateDefaultTextureView();
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}
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bool InitSample(int argc, const char** argv) {
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for (int i = 1; i < argc; i++) {
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if (std::string("-b") == argv[i] || std::string("--backend") == argv[i]) {
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i++;
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if (i < argc && std::string("d3d12") == argv[i]) {
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backendType = dawn_native::BackendType::D3D12;
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continue;
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}
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if (i < argc && std::string("metal") == argv[i]) {
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backendType = dawn_native::BackendType::Metal;
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continue;
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}
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if (i < argc && std::string("null") == argv[i]) {
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backendType = dawn_native::BackendType::Null;
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continue;
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}
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if (i < argc && std::string("opengl") == argv[i]) {
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backendType = dawn_native::BackendType::OpenGL;
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continue;
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}
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if (i < argc && std::string("vulkan") == argv[i]) {
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backendType = dawn_native::BackendType::Vulkan;
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continue;
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}
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fprintf(stderr, "--backend expects a backend name (opengl, metal, d3d12, null, vulkan)\n");
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return false;
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}
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if (std::string("-c") == argv[i] || std::string("--command-buffer") == argv[i]) {
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i++;
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if (i < argc && std::string("none") == argv[i]) {
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cmdBufType = CmdBufType::None;
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continue;
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}
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if (i < argc && std::string("terrible") == argv[i]) {
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cmdBufType = CmdBufType::Terrible;
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continue;
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}
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fprintf(stderr, "--command-buffer expects a command buffer name (none, terrible)\n");
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return false;
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}
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if (std::string("-h") == argv[i] || std::string("--help") == argv[i]) {
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printf("Usage: %s [-b BACKEND] [-c COMMAND_BUFFER]\n", argv[0]);
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printf(" BACKEND is one of: d3d12, metal, null, opengl, vulkan\n");
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printf(" COMMAND_BUFFER is one of: none, terrible\n");
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return false;
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}
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}
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return true;
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}
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void DoFlush() {
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if (cmdBufType == CmdBufType::Terrible) {
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bool c2sSuccess = c2sBuf->Flush();
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bool s2cSuccess = s2cBuf->Flush();
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ASSERT(c2sSuccess && s2cSuccess);
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}
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glfwPollEvents();
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}
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bool ShouldQuit() {
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return glfwWindowShouldClose(window);
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}
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GLFWwindow* GetGLFWWindow() {
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return window;
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}
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