public CVMetalTexture TextureFromImage(CVImageBuffer imageBuffer, MTLPixelFormat format, nint width, nint height, nint planeIndex, out CVReturn errorCode)
{
if (imageBuffer == null)
{
throw new ArgumentNullException("imageBuffer");
}
IntPtr texture;
errorCode = CVMetalTextureCacheCreateTextureFromImage(
allocator: IntPtr.Zero,
textureCache: handle, /* textureCache dict, one day we might add it */
sourceImage: imageBuffer.Handle,
textureAttr: IntPtr.Zero,
format: (nuint)(ulong)format,
width: width,
height: height,
planeIndex: planeIndex,
textureOut: out texture);
if (errorCode != 0)
{
return(null);
}
return(new CVMetalTexture(texture));
}
public Renderer()
{
// initialize properties
sampleCount = 1;
depthPixelFormat = MTLPixelFormat.Depth32Float;
stencilPixelFormat = MTLPixelFormat.Invalid;
// find a usable Device
device = MTLDevice.SystemDefault;
// create a new command queue
commandQueue = device.CreateCommandQueue();
NSError error;
shaderLibrary = device.CreateLibrary("default.metallib", out error);
// if the shader libary isnt loading, nothing good will happen
if (shaderLibrary == null)
{
throw new Exception("ERROR: Couldnt create a default shader library");
}
inflightSemaphore = new Semaphore(maxInflightBuffers, maxInflightBuffers);
}
public Renderer()
{
sampleCount = 4;
depthPixelFormat = MTLPixelFormat.Depth32Float;
stencilPixelFormat = MTLPixelFormat.Invalid;
// find a usable Device
device = MTLDevice.SystemDefault;
// create a new command queue
commandQueue = device.CreateCommandQueue();
NSError error;
defaultLibrary = device.CreateLibrary("default.metallib", out error);
// if the shader libary isnt loading, nothing good will happen
if (defaultLibrary == null)
{
throw new Exception("ERROR: Couldnt create a default shader library");
}
constantDataBufferIndex = 0;
inflightSemaphore = new Semaphore(max_inflight_buffers, max_inflight_buffers);
constantBuffer = new Uniforms[2];
constantBuffer [0].ambientColor = box1AmbientColor;
constantBuffer [0].diffuseColor = box1DiffuseColor;
constantBuffer [1].ambientColor = box2AmbientColor;
constantBuffer [1].diffuseColor = box2DiffuseColor;
multiplier = 1;
}
public Renderer ()
{
// initialize properties
sampleCount = 1;
depthPixelFormat = MTLPixelFormat.Depth32Float;
stencilPixelFormat = MTLPixelFormat.Invalid;
// find a usable Device
device = MTLDevice.SystemDefault;
// create a new command queue
commandQueue = device.CreateCommandQueue ();
NSError error;
shaderLibrary = device.CreateLibrary ("default.metallib", out error);
// if the shader libary isnt loading, nothing good will happen
if (shaderLibrary == null)
throw new Exception ("ERROR: Couldnt create a default shader library");
inflightSemaphore = new Semaphore (maxInflightBuffers, maxInflightBuffers);
}
public Renderer ()
{
sampleCount = 4;
depthPixelFormat = MTLPixelFormat.Depth32Float;
stencilPixelFormat = MTLPixelFormat.Invalid;
// find a usable Device
device = MTLDevice.SystemDefault;
// create a new command queue
commandQueue = device.CreateCommandQueue ();
NSError error;
defaultLibrary = device.CreateLibrary ("default.metallib", out error);
// if the shader libary isnt loading, nothing good will happen
if (defaultLibrary == null)
throw new Exception ("ERROR: Couldnt create a default shader library");
constantDataBufferIndex = 0;
inflightSemaphore = new Semaphore (max_inflight_buffers, max_inflight_buffers);
constantBuffer = new Uniforms[2];
constantBuffer [0].ambientColor = box1AmbientColor;
constantBuffer [0].diffuseColor = box1DiffuseColor;
constantBuffer [1].ambientColor = box2AmbientColor;
constantBuffer [1].diffuseColor = box2DiffuseColor;
multiplier = 1;
}
public MTLPipeline(ref GraphicsPipelineDescription description, MTLGraphicsDevice gd)
: base(ref description)
{
PrimitiveType = MTLFormats.VdToMTLPrimitiveTopology(description.PrimitiveTopology);
ResourceLayouts = new MTLResourceLayout[description.ResourceLayouts.Length];
NonVertexBufferCount = 0;
for (int i = 0; i < ResourceLayouts.Length; i++)
{
ResourceLayouts[i] = Util.AssertSubtype <ResourceLayout, MTLResourceLayout>(description.ResourceLayouts[i]);
NonVertexBufferCount += ResourceLayouts[i].BufferCount;
}
ResourceBindingModel = description.ResourceBindingModel ?? gd.ResourceBindingModel;
CullMode = MTLFormats.VdToMTLCullMode(description.RasterizerState.CullMode);
FrontFace = MTLFormats.VdVoMTLFrontFace(description.RasterizerState.FrontFace);
FillMode = MTLFormats.VdToMTLFillMode(description.RasterizerState.FillMode);
ScissorTestEnabled = description.RasterizerState.ScissorTestEnabled;
MTLRenderPipelineDescriptor mtlDesc = MTLRenderPipelineDescriptor.New();
foreach (Shader shader in description.ShaderSet.Shaders)
{
MTLShader mtlShader = Util.AssertSubtype <Shader, MTLShader>(shader);
MTLFunction specializedFunction;
if (mtlShader.HasFunctionConstants)
{
// Need to create specialized MTLFunction.
MTLFunctionConstantValues constantValues = CreateConstantValues(description.ShaderSet.Specializations);
specializedFunction = mtlShader.Library.newFunctionWithNameConstantValues(mtlShader.EntryPoint, constantValues);
AddSpecializedFunction(specializedFunction);
ObjectiveCRuntime.release(constantValues.NativePtr);
Debug.Assert(specializedFunction.NativePtr != IntPtr.Zero, "Failed to create specialized MTLFunction");
}
else
{
specializedFunction = mtlShader.Function;
}
if (shader.Stage == ShaderStages.Vertex)
{
mtlDesc.vertexFunction = specializedFunction;
}
else if (shader.Stage == ShaderStages.Fragment)
{
mtlDesc.fragmentFunction = specializedFunction;
}
}
// Vertex layouts
VertexLayoutDescription[] vdVertexLayouts = description.ShaderSet.VertexLayouts;
MTLVertexDescriptor vertexDescriptor = mtlDesc.vertexDescriptor;
for (uint i = 0; i < vdVertexLayouts.Length; i++)
{
uint layoutIndex = ResourceBindingModel == ResourceBindingModel.Improved
? NonVertexBufferCount + i
: i;
MTLVertexBufferLayoutDescriptor mtlLayout = vertexDescriptor.layouts[layoutIndex];
mtlLayout.stride = (UIntPtr)vdVertexLayouts[i].Stride;
uint stepRate = vdVertexLayouts[i].InstanceStepRate;
mtlLayout.stepFunction = stepRate == 0 ? MTLVertexStepFunction.PerVertex : MTLVertexStepFunction.PerInstance;
mtlLayout.stepRate = (UIntPtr)Math.Max(1, stepRate);
}
uint element = 0;
for (uint i = 0; i < vdVertexLayouts.Length; i++)
{
uint offset = 0;
VertexLayoutDescription vdDesc = vdVertexLayouts[i];
for (uint j = 0; j < vdDesc.Elements.Length; j++)
{
VertexElementDescription elementDesc = vdDesc.Elements[j];
MTLVertexAttributeDescriptor mtlAttribute = vertexDescriptor.attributes[element];
mtlAttribute.bufferIndex = (UIntPtr)(ResourceBindingModel == ResourceBindingModel.Improved
? NonVertexBufferCount + i
: i);
mtlAttribute.format = MTLFormats.VdToMTLVertexFormat(elementDesc.Format);
mtlAttribute.offset = elementDesc.Offset != 0 ? (UIntPtr)elementDesc.Offset : (UIntPtr)offset;
offset += FormatHelpers.GetSizeInBytes(elementDesc.Format);
element += 1;
}
}
VertexBufferCount = (uint)vdVertexLayouts.Length;
// Outputs
OutputDescription outputs = description.Outputs;
BlendStateDescription blendStateDesc = description.BlendState;
BlendColor = blendStateDesc.BlendFactor;
if (outputs.SampleCount != TextureSampleCount.Count1)
{
mtlDesc.sampleCount = (UIntPtr)FormatHelpers.GetSampleCountUInt32(outputs.SampleCount);
}
if (outputs.DepthAttachment != null)
{
PixelFormat depthFormat = outputs.DepthAttachment.Value.Format;
MTLPixelFormat mtlDepthFormat = MTLFormats.VdToMTLPixelFormat(depthFormat, true);
mtlDesc.depthAttachmentPixelFormat = mtlDepthFormat;
if ((FormatHelpers.IsStencilFormat(depthFormat)))
{
HasStencil = true;
mtlDesc.stencilAttachmentPixelFormat = mtlDepthFormat;
}
}
for (uint i = 0; i < outputs.ColorAttachments.Length; i++)
{
BlendAttachmentDescription attachmentBlendDesc = blendStateDesc.AttachmentStates[i];
MTLRenderPipelineColorAttachmentDescriptor colorDesc = mtlDesc.colorAttachments[i];
colorDesc.pixelFormat = MTLFormats.VdToMTLPixelFormat(outputs.ColorAttachments[i].Format, false);
colorDesc.blendingEnabled = attachmentBlendDesc.BlendEnabled;
colorDesc.alphaBlendOperation = MTLFormats.VdToMTLBlendOp(attachmentBlendDesc.AlphaFunction);
colorDesc.sourceAlphaBlendFactor = MTLFormats.VdToMTLBlendFactor(attachmentBlendDesc.SourceAlphaFactor);
colorDesc.destinationAlphaBlendFactor = MTLFormats.VdToMTLBlendFactor(attachmentBlendDesc.DestinationAlphaFactor);
colorDesc.rgbBlendOperation = MTLFormats.VdToMTLBlendOp(attachmentBlendDesc.ColorFunction);
colorDesc.sourceRGBBlendFactor = MTLFormats.VdToMTLBlendFactor(attachmentBlendDesc.SourceColorFactor);
colorDesc.destinationRGBBlendFactor = MTLFormats.VdToMTLBlendFactor(attachmentBlendDesc.DestinationColorFactor);
}
RenderPipelineState = gd.Device.newRenderPipelineStateWithDescriptor(mtlDesc);
ObjectiveCRuntime.release(mtlDesc.NativePtr);
if (outputs.DepthAttachment != null)
{
MTLDepthStencilDescriptor depthDescriptor = MTLUtil.AllocInit <MTLDepthStencilDescriptor>(
nameof(MTLDepthStencilDescriptor));
depthDescriptor.depthCompareFunction = MTLFormats.VdToMTLCompareFunction(
description.DepthStencilState.DepthComparison);
depthDescriptor.depthWriteEnabled = description.DepthStencilState.DepthWriteEnabled;
bool stencilEnabled = description.DepthStencilState.StencilTestEnabled;
if (stencilEnabled)
{
StencilReference = description.DepthStencilState.StencilReference;
StencilBehaviorDescription vdFrontDesc = description.DepthStencilState.StencilFront;
MTLStencilDescriptor front = MTLUtil.AllocInit <MTLStencilDescriptor>(nameof(MTLStencilDescriptor));
front.readMask = stencilEnabled ? description.DepthStencilState.StencilReadMask : 0u;
front.writeMask = stencilEnabled ? description.DepthStencilState.StencilWriteMask : 0u;
front.depthFailureOperation = MTLFormats.VdToMTLStencilOperation(vdFrontDesc.DepthFail);
front.stencilFailureOperation = MTLFormats.VdToMTLStencilOperation(vdFrontDesc.Fail);
front.depthStencilPassOperation = MTLFormats.VdToMTLStencilOperation(vdFrontDesc.Pass);
front.stencilCompareFunction = MTLFormats.VdToMTLCompareFunction(vdFrontDesc.Comparison);
depthDescriptor.frontFaceStencil = front;
StencilBehaviorDescription vdBackDesc = description.DepthStencilState.StencilBack;
MTLStencilDescriptor back = MTLUtil.AllocInit <MTLStencilDescriptor>(nameof(MTLStencilDescriptor));
back.readMask = stencilEnabled ? description.DepthStencilState.StencilReadMask : 0u;
back.writeMask = stencilEnabled ? description.DepthStencilState.StencilWriteMask : 0u;
back.depthFailureOperation = MTLFormats.VdToMTLStencilOperation(vdBackDesc.DepthFail);
back.stencilFailureOperation = MTLFormats.VdToMTLStencilOperation(vdBackDesc.Fail);
back.depthStencilPassOperation = MTLFormats.VdToMTLStencilOperation(vdBackDesc.Pass);
back.stencilCompareFunction = MTLFormats.VdToMTLCompareFunction(vdBackDesc.Comparison);
depthDescriptor.backFaceStencil = back;
ObjectiveCRuntime.release(front.NativePtr);
ObjectiveCRuntime.release(back.NativePtr);
}
DepthStencilState = gd.Device.newDepthStencilStateWithDescriptor(depthDescriptor);
ObjectiveCRuntime.release(depthDescriptor.NativePtr);
}
DepthClipMode = description.DepthStencilState.DepthTestEnabled ? MTLDepthClipMode.Clip : MTLDepthClipMode.Clamp;
}
public virtual nuint HistogramSizeForSourceFormat(MTLPixelFormat sourceFormat)
{
return(GetHistogramSize(sourceFormat));
}
public CVMetalTexture TextureFromImage(CVImageBuffer imageBuffer, MTLPixelFormat format, nint width, nint height, nint planeIndex, out CVReturn errorCode)
{
if (imageBuffer == null)
throw new ArgumentNullException ("imageBuffer");
IntPtr texture;
errorCode = CVMetalTextureCacheCreateTextureFromImage (
allocator: IntPtr.Zero,
textureCache: handle, /* textureCache dict, one day we might add it */
sourceImage: imageBuffer.Handle,
textureAttr: IntPtr.Zero,
format: (nuint) (ulong) format,
width: width,
height: height,
planeIndex: planeIndex,
textureOut: out texture);
if (errorCode != 0)
return null;
return new CVMetalTexture (texture);
}
