async Task Init()
{
var gpu = new Gpu();
gpu.EnableD3D12DebugLayer();
Device = await(await gpu.RequestAdapterAsync()).RequestDeviceAsync();
Windows.Storage.Streams.Buffer verticeCpuBuffer = new Windows.Storage.Streams.Buffer((uint)Buffer.ByteLength(Cube.CubeVertexArray));
verticeCpuBuffer.Length = verticeCpuBuffer.Capacity;
using (var verticeCpuStream = verticeCpuBuffer.AsStream())
{
byte[] vertexBufferBytes = new byte[Buffer.ByteLength(Cube.CubeVertexArray)];
Buffer.BlockCopy(Cube.CubeVertexArray, 0, vertexBufferBytes, 0, Buffer.ByteLength(Cube.CubeVertexArray));
await verticeCpuStream.WriteAsync(vertexBufferBytes, 0, Buffer.ByteLength(Cube.CubeVertexArray));
}
VerticesBuffer = Device.CreateBuffer(new GpuBufferDescriptor((ulong)Buffer.ByteLength(Cube.CubeVertexArray), GpuBufferUsageFlags.Vertex)
{
MappedAtCreation = true
});
verticeCpuBuffer.CopyTo(VerticesBuffer.GetMappedRange());
VerticesBuffer.Unmap();
string shaderCode;
using (var shaderFileStream = typeof(MainPage).Assembly.GetManifestResourceStream("FractalCube.shader.hlsl"))
using (var shaderStreamReader = new StreamReader(shaderFileStream))
{
shaderCode = shaderStreamReader.ReadToEnd();
}
var shader = Device.CreateShaderModule(new GpuShaderModuleDescriptor(GpuShaderSourceType.Hlsl, shaderCode));
var vertexState = new GpuVertexState(shader, "VSMain")
{
VertexBuffers = new GpuVertexBufferLayout[] { new GpuVertexBufferLayout(Cube.CubeVertexSize, new GpuVertexAttribute[]
{
new GpuVertexAttribute()
{
ShaderLocation = 0,
Format = GpuVertexFormat.Float4,
Offset = Cube.CubePositionOffset
},
new GpuVertexAttribute()
{
ShaderLocation = 1,
Format = GpuVertexFormat.Float4,
Offset = Cube.CubeColorOffset
},
new GpuVertexAttribute()
{
ShaderLocation = 2,
Format = GpuVertexFormat.Float2,
Offset = Cube.CubeUVOffset
}
}) }
};
var fragmentState = new GpuFragmentState(shader, "PSMain", new GpuColorTargetState[] { new GpuColorTargetState {
Format = GpuTextureFormat.BGRA8UNorm, Blend = null, WriteMask = GpuColorWriteFlags.All
} });
var primitiveState = new GpuPrimitiveState
{
Topology = GpuPrimitiveTopology.TriangleList,
FrontFace = GpuFrontFace.Ccw,
CullMode = GpuCullMode.Back,
StripIndexFormat = null
};
var depthState = new GpuDepthStencilState(GpuTextureFormat.Depth24PlusStencil8)
{
DepthWriteEnabled = true,
DepthCompare = GpuCompareFunction.Less,
};
UniformBindGroupLayout = Device.CreateBindGroupLayout(new GpuBindGroupLayoutDescriptor(new GpuBindGroupLayoutEntry[]
{
new GpuBindGroupLayoutEntry()
{
Binding = 0,
Visibility = GpuShaderStageFlags.Vertex,
Buffer = new GpuBufferBindingLayout
{
Type = GpuBufferBindingType.Uniform,
HasDynamicOffset = false,
MinBindingSize = UniformBufferSize
}
},
new GpuBindGroupLayoutEntry()
{
Binding = 1,
Visibility = GpuShaderStageFlags.Fragment,
Sampler = new GpuSamplerBindingLayout()
{
Type = GpuSamplerBindingType.Filtering
}
},
new GpuBindGroupLayoutEntry()
{
Binding = 2,
Visibility = GpuShaderStageFlags.Fragment,
Texture = new GpuTextureBindingLayout()
{
SampleType = GpuTextureSampleType.Float,
ViewDimension = GpuTextureViewDimension._2D,
Multisampled = false
}
}
}));
var pipelineLayout = Device.CreatePipelineLayout(new GpuPipelineLayoutDescriptor()
{
BindGroupLayouts = new GpuBindGroupLayout[]
{
UniformBindGroupLayout
}
});
Pipeline = Device.CreateRenderPipeline(new GpuRenderPipelineDescriptor(vertexState)
{
Fragment = fragmentState,
Primitive = primitiveState,
DepthStencilState = depthState,
Layout = pipelineLayout
});
UniformBuffer = Device.CreateBuffer(new GpuBufferDescriptor(UniformBufferSize, GpuBufferUsageFlags.Uniform | GpuBufferUsageFlags.CopyDst));
UniformCpuBuffer = new Windows.Storage.Streams.Buffer(4 * 4 * sizeof(float));
UniformCpuBuffer.Length = UniformCpuBuffer.Capacity;
Sampler = Device.CreateSampler(new GpuSamplerDescriptor()
{
MinFilter = GpuFilterMode.Linear,
MagFilter = GpuFilterMode.Linear
});
}
async Task Init()
{
var adapter = await Gpu.RequestAdapterAsync();
Device = await adapter.RequestDeviceAsync();
var rectVerts = new float[]
{
1.0f, 1.0f, 0.0f, 1.0f, 0.0f,
1.0f, -1.0f, 0.0f, 1.0f, 1.0f,
-1.0f, -1.0f, 0.0f, 0.0f, 1.0f,
1.0f, 1.0f, 0.0f, 1.0f, 0.0f,
-1.0f, -1.0f, 0.0f, 0.0f, 1.0f,
-1.0f, 1.0f, 0.0f, 0.0f, 0.0f
};
VerticesBuffer = Device.CreateBuffer(new GpuBufferDescriptor((uint)Buffer.ByteLength(rectVerts), GpuBufferUsageFlags.Vertex)
{
MappedAtCreation = true
});
CreateBufferFromArray(rectVerts).CopyTo(VerticesBuffer.GetMappedRange());
VerticesBuffer.Unmap();
var blurBindGroupLayouts = new GpuBindGroupLayout[] {
Device.CreateBindGroupLayout(new GpuBindGroupLayoutDescriptor(new GpuBindGroupLayoutEntry[]
{
new GpuBindGroupLayoutEntry()
{
Binding = 0,
Visibility = GpuShaderStageFlags.Compute,
Sampler = new GpuSamplerBindingLayout()
{
Type = GpuSamplerBindingType.Filtering
}
},
new GpuBindGroupLayoutEntry()
{
Binding = 1,
Visibility = GpuShaderStageFlags.Compute,
Buffer = new GpuBufferBindingLayout()
{
Type = GpuBufferBindingType.Uniform,
HasDynamicOffset = false,
MinBindingSize = 2 * 4 /* 2 uints */
}
}
})),
Device.CreateBindGroupLayout(new GpuBindGroupLayoutDescriptor(new GpuBindGroupLayoutEntry[]
{
new GpuBindGroupLayoutEntry()
{
Binding = 1,
Visibility = GpuShaderStageFlags.Compute,
Texture = new GpuTextureBindingLayout()
{
SampleType = GpuTextureSampleType.Float,
ViewDimension = GpuTextureViewDimension._2D,
Multisampled = false
}
},
new GpuBindGroupLayoutEntry()
{
Binding = 2,
Visibility = GpuShaderStageFlags.Compute,
StorageTexture = new GpuStorageTextureBindingLayout()
{
Format = GpuTextureFormat.RGBA8UNorm,
Access = GpuStorageTextureAccess.WriteOnly,
ViewDimension = GpuTextureViewDimension._2D
}
},
new GpuBindGroupLayoutEntry()
{
Binding = 3,
Visibility = GpuShaderStageFlags.Compute,
Buffer = new GpuBufferBindingLayout()
{
Type = GpuBufferBindingType.Uniform,
HasDynamicOffset = false,
MinBindingSize = 4
}
}
}))
};
GpuShaderModule computeShader;
using (var shaderFileStream = typeof(MainPage).Assembly.GetManifestResourceStream("ImageBlur.compute.hlsl"))
using (var shaderStreamReader = new StreamReader(shaderFileStream))
{
var shaderCode = await shaderStreamReader.ReadToEndAsync();
computeShader = Device.CreateShaderModule(new GpuShaderModuleDescriptor(GpuShaderSourceType.Hlsl, shaderCode));
}
GpuShaderModule drawShader;
using (var shaderFileStream = typeof(MainPage).Assembly.GetManifestResourceStream("ImageBlur.draw.hlsl"))
using (var shaderStreamReader = new StreamReader(shaderFileStream))
{
var shaderCode = await shaderStreamReader.ReadToEndAsync();
drawShader = Device.CreateShaderModule(new GpuShaderModuleDescriptor(GpuShaderSourceType.Hlsl, shaderCode));
}
BlurPipeline = Device.CreateComputePipeline(new GpuComputePipelineDescriptor(new GpuProgrammableStage(computeShader, "main"))
{
Layout = Device.CreatePipelineLayout(new GpuPipelineLayoutDescriptor()
{
BindGroupLayouts = blurBindGroupLayouts
})
});
var bindGroupLayout = Device.CreateBindGroupLayout(new GpuBindGroupLayoutDescriptor(new GpuBindGroupLayoutEntry[]
{
new GpuBindGroupLayoutEntry()
{
Binding = 0,
Visibility = GpuShaderStageFlags.Fragment,
Sampler = new GpuSamplerBindingLayout()
{
Type = GpuSamplerBindingType.Filtering,
}
},
new GpuBindGroupLayoutEntry()
{
Binding = 1,
Visibility = GpuShaderStageFlags.Fragment,
Texture = new GpuTextureBindingLayout()
{
SampleType = GpuTextureSampleType.Float,
ViewDimension = GpuTextureViewDimension._2D,
Multisampled = false
}
}
}));
Pipeline = Device.CreateRenderPipeline(new GpuRenderPipelineDescriptor(new GpuVertexState(drawShader, "VSMain")
{
VertexBuffers = new GpuVertexBufferLayout[]
{
new GpuVertexBufferLayout(20, new GpuVertexAttribute[]
{
new GpuVertexAttribute()
{
Format = GpuVertexFormat.Float3,
Offset = 0,
ShaderLocation = 0
},
new GpuVertexAttribute()
{
Format = GpuVertexFormat.Float2,
Offset = 12,
ShaderLocation = 1
}
})
}
})
{
Layout = Device.CreatePipelineLayout(new GpuPipelineLayoutDescriptor()
{
BindGroupLayouts = new GpuBindGroupLayout[] { bindGroupLayout }
}),
Fragment = new GpuFragmentState(drawShader, "PSMain", new GpuColorTargetState[] { new GpuColorTargetState()
{
Format = SwapChainFormat, Blend = null, WriteMask = GpuColorWriteFlags.All
} }),
Primitive = new GpuPrimitiveState()
{
Topology = GpuPrimitiveTopology.TriangleList,
CullMode = GpuCullMode.None,
FrontFace = GpuFrontFace.Ccw
}
});
var sampler = Device.CreateSampler(new GpuSamplerDescriptor()
{
MinFilter = GpuFilterMode.Linear,
MagFilter = GpuFilterMode.Linear
});
var imgDecoder = await BitmapDecoder.CreateAsync(typeof(MainPage).Assembly.GetManifestResourceStream("ImageBlur.Di_3d.png").AsRandomAccessStream());
var imageBitmap = await imgDecoder.GetSoftwareBitmapAsync();
(SrcWidth, SrcHeight) = ((uint)imageBitmap.PixelWidth, (uint)imageBitmap.PixelHeight);
var cubeTexture = Device.CreateTexture(new GpuTextureDescriptor(new GpuExtend3DDict {
Width = (uint)imageBitmap.PixelWidth, Height = (uint)imageBitmap.PixelHeight, Depth = 1
}, GpuTextureFormat.BGRA8UNorm, GpuTextureUsageFlags.Sampled | GpuTextureUsageFlags.CopyDst));
Device.DefaultQueue.CopyImageBitmapToTexture(new GpuImageCopyImageBitmap(imageBitmap), new GpuImageCopyTexture(cubeTexture), new GpuExtend3DDict {
Width = (uint)imageBitmap.PixelWidth, Height = (uint)imageBitmap.PixelHeight, Depth = 1
});
var textures = new GpuTexture[2]
{
Device.CreateTexture(new GpuTextureDescriptor(new GpuExtend3DDict {
Width = SrcWidth, Height = SrcHeight, Depth = 1
}, GpuTextureFormat.RGBA8UNorm, GpuTextureUsageFlags.CopyDst | GpuTextureUsageFlags.Storage | GpuTextureUsageFlags.Sampled)),
Device.CreateTexture(new GpuTextureDescriptor(new GpuExtend3DDict {
Width = SrcWidth, Height = SrcHeight, Depth = 1
}, GpuTextureFormat.RGBA8UNorm, GpuTextureUsageFlags.CopyDst | GpuTextureUsageFlags.Storage | GpuTextureUsageFlags.Sampled))
};
var buffer0 = Device.CreateBuffer(new GpuBufferDescriptor(4, GpuBufferUsageFlags.Uniform)
{
MappedAtCreation = true
});
using (var stream = buffer0.GetMappedRange().AsStream())
using (var writer = new BinaryWriter(stream))
{
writer.Write(0u);
}
buffer0.Unmap();
var buffer1 = Device.CreateBuffer(new GpuBufferDescriptor(4, GpuBufferUsageFlags.Uniform)
{
MappedAtCreation = true
});
using (var stream = buffer1.GetMappedRange().AsStream())
using (var writer = new BinaryWriter(stream))
{
writer.Write(1u);
}
buffer1.Unmap();
BlurParamsBuffer = Device.CreateBuffer(new GpuBufferDescriptor(8, GpuBufferUsageFlags.CopyDst | GpuBufferUsageFlags.Uniform));
ComputeConstants = Device.CreateBindGroup(new GpuBindGroupDescriptor(blurBindGroupLayouts[0], new GpuBindGroupEntry[]
{
new GpuBindGroupEntry(0, sampler),
new GpuBindGroupEntry(1, new GpuBufferBinding(BlurParamsBuffer, BlurParamsBuffer.Size))
}));
ComputeBindGroup0 = Device.CreateBindGroup(new GpuBindGroupDescriptor(blurBindGroupLayouts[1], new GpuBindGroupEntry[]
{
new GpuBindGroupEntry(1, cubeTexture.CreateView()),
new GpuBindGroupEntry(2, textures[0].CreateView()),
new GpuBindGroupEntry(3, new GpuBufferBinding(buffer0, buffer0.Size))
}));
ComputeBindGroup1 = Device.CreateBindGroup(new GpuBindGroupDescriptor(blurBindGroupLayouts[1], new GpuBindGroupEntry[]
{
new GpuBindGroupEntry(1, textures[0].CreateView()),
new GpuBindGroupEntry(2, textures[1].CreateView()),
new GpuBindGroupEntry(3, new GpuBufferBinding(buffer1, buffer1.Size))
}));
ComputeBindGroup2 = Device.CreateBindGroup(new GpuBindGroupDescriptor(blurBindGroupLayouts[1], new GpuBindGroupEntry[]
{
new GpuBindGroupEntry(1, textures[1].CreateView()),
new GpuBindGroupEntry(2, textures[0].CreateView()),
new GpuBindGroupEntry(3, new GpuBufferBinding(buffer0, buffer0.Size))
}));
UniformBindGroup = Device.CreateBindGroup(new GpuBindGroupDescriptor(bindGroupLayout, new GpuBindGroupEntry[]
{
new GpuBindGroupEntry(0, sampler),
new GpuBindGroupEntry(1, textures[1].CreateView())
}));
}