internal void Apply(IMTLRenderCommandEncoder commandEncoder)
{
// Rasterizer state.
commandEncoder.SetTriangleFillMode(_triangleFillMode);
commandEncoder.SetFrontFacingWinding(_frontFacingWinding);
commandEncoder.SetCullMode(_cullMode);
// Depth stencil state.
commandEncoder.SetDepthStencilState(_depthStencilState);
}
public void Draw(MTKView view)
{
// Create a new command buffer for each renderpass to the current drawable
IMTLCommandBuffer commandBuffer = commandQueue.CommandBuffer();
// Compute commands
IMTLComputeCommandEncoder computeCommandEncoder = commandBuffer.ComputeCommandEncoder;
computeCommandEncoder.SetComputePipelineState(computePipelineState);
computeCommandEncoder.SetBuffer(tessellationFactorsBuffer, 0, 2);
computeCommandEncoder.DispatchThreadgroups(new MTLSize(1, 1, 1), new MTLSize(1, 1, 1));
computeCommandEncoder.EndEncoding();
// Render commands
// Call the view's completion handler which is required by the view since it will signal its semaphore and set up the next buffer
var drawable = view.CurrentDrawable;
// Obtain a renderPassDescriptor generated from the view's drawable textures
MTLRenderPassDescriptor renderPassDescriptor = view.CurrentRenderPassDescriptor;
// Create a render command encoder so we can render into something
IMTLRenderCommandEncoder renderCommandEncoder = commandBuffer.CreateRenderCommandEncoder(renderPassDescriptor);
// Set context state
renderCommandEncoder.SetTriangleFillMode(MTLTriangleFillMode.Lines);
renderCommandEncoder.SetDepthStencilState(depthState);
renderCommandEncoder.SetRenderPipelineState(renderPipelineState);
renderCommandEncoder.SetVertexBuffer(controlPointsBuffer, 0, 0);
renderCommandEncoder.SetTessellationFactorBuffer(tessellationFactorsBuffer, 0, 0);
// Tell the render context we want to draw our primitives
renderCommandEncoder.DrawPatches(3, 0, 1, null, 0, 1, 0);
// We're done encoding commands
renderCommandEncoder.EndEncoding();
// Schedule a present once the framebuffer is complete using the current drawable
commandBuffer.PresentDrawable(drawable);
// Finalize rendering here & push the command buffer to the GPU
commandBuffer.Commit();
}
public void Draw(MTKView view)
{
// Update
// Create a new command buffer for each renderpass to the current drawable
IMTLCommandBuffer commandBuffer = commandQueue.CommandBuffer();
// Call the view's completion handler which is required by the view since it will signal its semaphore and set up the next buffer
var drawable = view.CurrentDrawable;
// Obtain a renderPassDescriptor generated from the view's drawable textures
MTLRenderPassDescriptor renderPassDescriptor = view.CurrentRenderPassDescriptor;
// If we have a valid drawable, begin the commands to render into it
if (renderPassDescriptor != null)
{
// Create a render command encoder so we can render into something
IMTLRenderCommandEncoder renderEncoder = commandBuffer.CreateRenderCommandEncoder(renderPassDescriptor);
renderEncoder.SetDepthStencilState(depthStencilState);
renderEncoder.SetCullMode(MTLCullMode.Front);
renderEncoder.SetFrontFacingWinding(MTLWinding.CounterClockwise);
renderEncoder.SetTriangleFillMode(MTLTriangleFillMode.Fill);
// Set context state
renderEncoder.SetRenderPipelineState(pipelineState);
renderEncoder.SetVertexBuffer(vertexBuffer, 0, 0);
renderEncoder.SetVertexBuffer(instancedBuffer, 0, 1);
// Tell the render context we want to draw our primitives
renderEncoder.DrawIndexedPrimitives(MTLPrimitiveType.Triangle, (uint)indexData.Length, MTLIndexType.UInt16, indexBuffer, 0, 3);
renderEncoder.EndEncoding();
// Schedule a present once the framebuffer is complete using the current drawable
commandBuffer.PresentDrawable(drawable);
}
// Finalize rendering here & push the command buffer to the GPU
commandBuffer.Commit();
}
