DKGL2_Test/TestApp1/TestApp1.cpp

// TestApp1.cpp : Defines the entry point for the application.
//

#ifdef _WIN32
#include "Win32/stdafx.h"
#endif
#include <DK.h>


class TestApp1 : public DKApplication
{
	DKObject<DKWindow> window;
	DKObject<DKThread> renderThread;
	DKResourcePool resourcePool;

	DKAtomicNumber32 runningRenderThread;
public:
	void RenderThread(void)
	{
		DKObject<DKData> vertData = resourcePool.LoadResourceData("triangle.vert.spv");
		DKObject<DKData> fragData = resourcePool.LoadResourceData("triangle.frag.spv");
		DKShader vertShader(vertData, DKShader::Vertex);
		DKShader fragShader(fragData, DKShader::Fragment);

		DKObject<DKGraphicsDevice> device = DKGraphicsDevice::SharedInstance();
		DKObject<DKShaderModule> vertShaderModule = device->CreateShaderModule(&vertShader);
		DKObject<DKShaderModule> fragShaderModule = device->CreateShaderModule(&fragShader);

		DKObject<DKShaderFunction> vertShaderFunction = vertShaderModule->CreateFunction(vertShaderModule->FunctionNames().Value(0));
		DKObject<DKShaderFunction> fragShaderFunction = fragShaderModule->CreateFunction(fragShaderModule->FunctionNames().Value(0));

		DKObject<DKCommandQueue> queue = device->CreateCommandQueue(DKCommandQueue::Graphics);
		DKObject<DKSwapChain> swapChain = queue->CreateSwapChain(window);

		DKLog("VertexFunction.VertexAttributes: %d", vertShaderFunction->VertexAttributes().Count());
		for (int i = 0; i < vertShaderFunction->VertexAttributes().Count(); ++i)
		{ 
			const DKVertexAttribute& attr = vertShaderFunction->VertexAttributes().Value(i);
			DKLog("  --> VertexAttribute[%d]: \"%ls\" (location:%u)", i, (const wchar_t*)attr.name, attr.location);
		}

		struct Vertex
		{
			DKVector3 position;
			DKVector3 color;
		};
		DKArray<Vertex> vertexData =
		{
			{ {  0.0f, -0.5f, 0.0f },{ 1.0f, 1.0f, 1.0f } },
			{ {  0.5f,  0.5f, 0.0f },{ 0.0f, 1.0f, 0.0f } },
			{ { -0.5f,  0.5f, 0.0f },{ 0.0f, 0.0f, 1.0f } }
		};
		uint32_t vertexBufferSize = static_cast<uint32_t>(vertexData.Count()) * sizeof(Vertex);
		DKArray<uint32_t> indexData = { 0, 1, 2 };
		uint32_t indexBufferSize = indexData.Count() * sizeof(uint32_t);

		DKObject<DKGpuBuffer> vertexBuffer = device->CreateBuffer(vertexBufferSize, DKGpuBuffer::StorageModeShared, DKCpuCacheModeDefault);
		memcpy(vertexBuffer->Lock(), vertexData, vertexBufferSize);
		vertexBuffer->Unlock();

		DKObject<DKGpuBuffer> indexBuffer = device->CreateBuffer(indexBufferSize, DKGpuBuffer::StorageModeShared, DKCpuCacheModeDefault);
		memcpy(indexBuffer->Lock(), indexData, indexBufferSize);
		indexBuffer->Unlock();

		DKRenderPipelineDescriptor pipelineDescriptor;
		pipelineDescriptor.vertexFunction = vertShaderFunction;
		pipelineDescriptor.fragmentFunction = fragShaderFunction;
		pipelineDescriptor.colorAttachments.Resize(1);
		pipelineDescriptor.colorAttachments.Value(0).pixelFormat = swapChain->ColorPixelFormat();
		pipelineDescriptor.depthStencilAttachmentPixelFormat = DKPixelFormat::Invalid; // no depth buffer
		pipelineDescriptor.vertexDescriptor.attributes = {
			{ DKVertexFormat::Float3, 0, 0, 0 },
			{ DKVertexFormat::Float3, sizeof(DKVector3), 0, 1 },
		};
		pipelineDescriptor.vertexDescriptor.layouts = {
			{ DKVertexStepRate::Vertex, sizeof(Vertex), 0 },
		};
		pipelineDescriptor.primitiveTopology = DKPrimitiveType::Triangle;
		pipelineDescriptor.frontFace = DKFrontFace::CCW;
		pipelineDescriptor.triangleFillMode = DKTriangleFillMode::Fill;
		pipelineDescriptor.depthClipMode = DKDepthClipMode::Clip;
		pipelineDescriptor.cullMode = DKCullMode::None;
		pipelineDescriptor.rasterizationEnabled = true;

		DKRenderPipelineReflection reflection;
		DKObject<DKRenderPipelineState> pipelineState = device->CreateRenderPipeline(pipelineDescriptor, &reflection);
		if (pipelineState)
		{
			auto printShaderArg = [](const DKShaderResource& arg)
			{
				const char* argType = "Unknown";
				switch (arg.type)
				{
				case DKShaderResource::TypeBuffer:	argType = "Buffer"; break;
				case DKShaderResource::TypeTexture:	argType = "Texture"; break;
				case DKShaderResource::TypeSampler:	argType = "Sampler"; break;
				case DKShaderResource::TypeThreadgroupMemory:	argType = "ThreadMemory"; break;
				}
				DKLog("  --> \"%ls\"[%u] binding:%u:%u type:%s", (const wchar_t*)arg.name, uint32_t(arg.count), arg.set, arg.binding, argType);
			};
			DKLog("PipelineReflection.VertexResources: %d", reflection.vertexResources.Count());
			for (auto& arg : reflection.vertexResources)
				printShaderArg(arg);
			DKLog("PipelineReflection.FragmentResources: %d", reflection.fragmentResources.Count());
			for (auto& arg : reflection.fragmentResources)
				printShaderArg(arg);
		}

		DKTimer timer;
		timer.Reset();

		DKLog("Render thread begin");
		while (!runningRenderThread.CompareAndSet(0, 0))
		{
			DKRenderPassDescriptor rpd = swapChain->CurrentRenderPassDescriptor();
			double t = timer.Elapsed();
			t = (cos(t) + 1.0) * 0.5;
			rpd.colorAttachments.Value(0).clearColor = DKColor(t, 0.0, 0.0, 0.0);

			DKObject<DKCommandBuffer> buffer = queue->CreateCommandBuffer();
			DKObject<DKRenderCommandEncoder> encoder = buffer->CreateRenderCommandEncoder(rpd);
			if (encoder)
			{
				encoder->SetRenderPipelineState(pipelineState);
				encoder->SetVertexBuffer(vertexBuffer, 0, 0);
				encoder->SetIndexBuffer(indexBuffer, 0, DKIndexType::UInt32);
				// draw scene!
				encoder->DrawIndexed(indexData.Count(), 1, 0, 0, 1);
				encoder->EndEncoding();
				buffer->Commit();
				swapChain->Present();
			}
			else
			{
			}
			DKThread::Sleep(0.01);
		}
		DKLog("RenderThread terminating...");
	}

	void OnInitialize(void) override
	{
		DKLogD("%s", DKGL_FUNCTION_NAME);

		DKString resPath = DefaultPath(SystemPath::AppResource);
		resPath = resPath.FilePathStringByAppendingPath("Data");
		DKLog("resPath: %ls", (const wchar_t*)resPath);
		resourcePool.AddLocatorForPath(resPath);

		window = DKWindow::Create("DefaultWindow");
		window->SetOrigin({ 0, 0 });
		window->Resize({ 320, 240 });
		window->Activate();

		window->AddEventHandler(this,
			DKFunction([this](const DKWindow::WindowEvent& e) {
			if (e.type == DKWindow::WindowEvent::WindowClosed)
				DKApplication::Instance()->Terminate(0);
		}),
		NULL, NULL);

		runningRenderThread = 1;
		renderThread = DKThread::Create(DKFunction(this, &TestApp1::RenderThread)->Invocation());
	}
	void OnTerminate(void) override
	{
		DKLogD("%s", DKGL_FUNCTION_NAME);

		runningRenderThread = 0;
		renderThread->WaitTerminate();
		renderThread = NULL;
		window = NULL;

		DKLogI("Memory Pool Statistics");
		size_t numBuckets = DKMemoryPoolNumberOfBuckets();
		DKMemoryPoolBucketStatus* buckets = new DKMemoryPoolBucketStatus[numBuckets];
		DKMemoryPoolQueryAllocationStatus(buckets, numBuckets);
		size_t usedBytes = 0;
		for (int i = 0; i < numBuckets; ++i)
		{
			if (buckets[i].totalChunks > 0)
			{
				DKLogI("--> %5lu:  %5lu/%5lu, usage: %.1f%%, used: %.1fKB, total: %.1fKB",
					buckets[i].chunkSize,
					buckets[i].usedChunks, buckets[i].totalChunks,
					double(buckets[i].usedChunks) / double(buckets[i].totalChunks) * 100.0,
					double(buckets[i].chunkSize * buckets[i].usedChunks) / 1024.0,
					double(buckets[i].chunkSize * buckets[i].totalChunks) / 1024.0
				);
				usedBytes += buckets[i].chunkSize * buckets[i].usedChunks;
			}
		}
		DKLogI("MemoryPool Usage: %.1fMB / %.1fMB", double(usedBytes) / (1024 * 1024), double(DKMemoryPoolSize()) / (1024 * 1024));
		delete[] buckets;
	}
};


#ifdef _WIN32
int APIENTRY wWinMain(_In_ HINSTANCE hInstance,
	_In_opt_ HINSTANCE hPrevInstance,
	_In_ LPWSTR    lpCmdLine,
	_In_ int       nCmdShow)
#else
int main(int argc, const char * argv[])
#endif
{
	TestApp1 app;
	DKPropertySet::SystemConfig().SetValue("AppDelegate", "AppDelegate");
	DKPropertySet::SystemConfig().SetValue("GraphicsAPI", "Vulkan");
	return app.Run();
}