public RenderInfo GetPipelineAndResources(GraphicsDevice graphicsDevice, ResourceFactory resourceFactory, ResourceLayout vpLayout, Framebuffer framebuffer)
{
// TODO Cache this by device, factory
var key = new Tuple <GraphicsDevice, ResourceFactory>(graphicsDevice, resourceFactory);
if (RenderInfoCache.TryGetValue(key, out var ri))
{
return(ri);
}
ri = new RenderInfo();
var resourceLayoutElementDescriptionList = new List <ResourceLayoutElementDescription> {
};
var bindableResourceList = new List <BindableResource>();
GraphicsPipelineDescription pd = new GraphicsPipelineDescription();
pd.PrimitiveTopology = PrimitiveTopology;
var nDrawables = (uint)Elements.Count;
var alignment = graphicsDevice.UniformBufferMinOffsetAlignment;
var modelViewMatrixObjSizeInBytes = 64u;
if (alignment > 64u)
{
modelViewMatrixObjSizeInBytes = alignment;
}
ri.UniformStrides.Add(modelViewMatrixObjSizeInBytes);
ri.ModelViewBuffer =
resourceFactory.CreateBuffer(new BufferDescription(modelViewMatrixObjSizeInBytes * nDrawables, BufferUsage.UniformBuffer | BufferUsage.Dynamic));
resourceLayoutElementDescriptionList.Add(
new ResourceLayoutElementDescription("Model", ResourceKind.UniformBuffer, ShaderStages.Vertex, ResourceLayoutElementOptions.DynamicBinding));
//bindableResourceList.Add(ri.ModelViewBuffer);
bindableResourceList.Add(new DeviceBufferRange(ri.ModelViewBuffer, 0, modelViewMatrixObjSizeInBytes));
// Process Attached Textures
foreach (var tex2d in PipelineState.TextureList)
{
var deviceTexture =
tex2d.ProcessedTexture.CreateDeviceTexture(graphicsDevice, resourceFactory,
TextureUsage.Sampled);
var textureView =
resourceFactory.CreateTextureView(deviceTexture);
resourceLayoutElementDescriptionList.Add(
new ResourceLayoutElementDescription(tex2d.TextureName, ResourceKind.TextureReadOnly,
ShaderStages.Fragment)
);
resourceLayoutElementDescriptionList.Add(
new ResourceLayoutElementDescription(tex2d.SamplerName, ResourceKind.Sampler,
ShaderStages.Fragment)
);
bindableResourceList.Add(textureView);
bindableResourceList.Add(graphicsDevice.Aniso4xSampler);
}
foreach (var uniform in PipelineState.UniformList)
{
uniform.ConfigureDeviceBuffers(graphicsDevice, resourceFactory);
resourceLayoutElementDescriptionList.Add(uniform.ResourceLayoutElementDescription);
bindableResourceList.Add(uniform.DeviceBufferRange);
if (uniform.ResourceLayoutElementDescription.Options == ResourceLayoutElementOptions.DynamicBinding)
{
ri.UniformStrides.Add(uniform.DeviceBufferRange.SizeInBytes);
}
}
ri.ResourceLayout = resourceFactory.CreateResourceLayout(
new ResourceLayoutDescription(resourceLayoutElementDescriptionList.ToArray()));
ri.ResourceSet = resourceFactory.CreateResourceSet(
new ResourceSetDescription(
ri.ResourceLayout,
bindableResourceList.ToArray()
)
);
pd.BlendState = PipelineState.BlendStateDescription;
pd.DepthStencilState = PipelineState.DepthStencilState;
pd.RasterizerState = PipelineState.RasterizerStateDescription;
// TODO - cache based on the shader description and reuse shader objects
if (null != PipelineState.VertexShaderDescription && null != PipelineState.FragmentShaderDescription)
{
Shader[] shaders = resourceFactory.CreateFromSpirv(
PipelineState.VertexShaderDescription.Value,
PipelineState.FragmentShaderDescription.Value,
GetOptions(graphicsDevice, framebuffer)
);
Shader vs = shaders[0];
Shader fs = shaders[1];
pd.ShaderSet = new ShaderSetDescription(
vertexLayouts: new VertexLayoutDescription[] { VertexLayout },
shaders: new Shader[] { vs, fs });
}
pd.ResourceLayouts = new[] { vpLayout, ri.ResourceLayout };
pd.Outputs = framebuffer.OutputDescription;
ri.Pipeline = resourceFactory.CreateGraphicsPipeline(pd);
RenderInfoCache.Add(key, ri);
return(ri);
}
public RenderInfo GetPipelineAndResources(GraphicsDevice graphicsDevice, ResourceFactory resourceFactory, ResourceLayout vpLayout)
{
// TODO Cache this by device, factory
var key = new Tuple <GraphicsDevice, ResourceFactory>(graphicsDevice, resourceFactory);
if (RenderInfoCache.TryGetValue(key, out var ri))
{
return(ri);
}
ri = new RenderInfo();
var resourceLayoutElementDescriptionList = new List <ResourceLayoutElementDescription> {
};
var bindableResourceList = new List <BindableResource>();
GraphicsPipelineDescription pd = new GraphicsPipelineDescription();
pd.PrimitiveTopology = PrimitiveTopology;
//
// TODO - CASE 1 - implement this when Veldrid supports dynamic uniform buffers.
//
// var nDrawables = (uint)Elements.Count;
// ri.ModelBuffer =
// resourceFactory.CreateBuffer(new BufferDescription(64*nDrawables, BufferUsage.UniformBuffer | BufferUsage.Dynamic));
//
// var modelMatrixBuffer = new Matrix4x4[nDrawables];
// for(var i=0; i<nDrawables; ++i)
// {
// modelMatrixBuffer[i] = Elements[i].ModelMatrix;
// }
// TODO - this shouldn't be allocated here!
var modelMatrixBuffer = Matrix4x4.Identity;
ri.ModelViewBuffer =
resourceFactory.CreateBuffer(new BufferDescription(64, BufferUsage.UniformBuffer | BufferUsage.Dynamic));
graphicsDevice.UpdateBuffer(ri.ModelViewBuffer, 0, modelMatrixBuffer);
// TODO - this shouldn't be allocated here!
resourceLayoutElementDescriptionList.Add(
new ResourceLayoutElementDescription("Model", ResourceKind.UniformBuffer, ShaderStages.Vertex));
bindableResourceList.Add(ri.ModelViewBuffer);
// Process Attached Textures
foreach (var tex2d in PipelineState.TextureList)
{
var deviceTexture =
tex2d.ProcessedTexture.CreateDeviceTexture(graphicsDevice, resourceFactory,
TextureUsage.Sampled);
var textureView =
resourceFactory.CreateTextureView(deviceTexture);
resourceLayoutElementDescriptionList.Add(
new ResourceLayoutElementDescription(tex2d.TextureName, ResourceKind.TextureReadOnly,
ShaderStages.Fragment)
);
resourceLayoutElementDescriptionList.Add(
new ResourceLayoutElementDescription(tex2d.SamplerName, ResourceKind.Sampler,
ShaderStages.Fragment)
);
bindableResourceList.Add(textureView);
bindableResourceList.Add(graphicsDevice.Aniso4xSampler);
}
ri.ResourceLayout = resourceFactory.CreateResourceLayout(
new ResourceLayoutDescription(resourceLayoutElementDescriptionList.ToArray()));
ri.ResourceSet = resourceFactory.CreateResourceSet(
new ResourceSetDescription(
ri.ResourceLayout,
bindableResourceList.ToArray()
)
);
pd.BlendState = PipelineState.BlendStateDescription;
pd.DepthStencilState = PipelineState.DepthStencilState;
pd.RasterizerState = PipelineState.RasterizerStateDescription;
if (null != PipelineState.VertexShaderDescription && null != PipelineState.FragmentShaderDescription)
{
var vertexShaderProg = resourceFactory.CreateShader(PipelineState.VertexShaderDescription.Value);
var fragmentShaderProg = resourceFactory.CreateShader(PipelineState.FragmentShaderDescription.Value);
pd.ShaderSet = new ShaderSetDescription(
vertexLayouts: new VertexLayoutDescription[] { VertexLayout },
shaders: new Shader[] { vertexShaderProg, fragmentShaderProg });
}
pd.ResourceLayouts = new[] { vpLayout, ri.ResourceLayout };
pd.Outputs = graphicsDevice.SwapchainFramebuffer.OutputDescription;
ri.Pipeline = resourceFactory.CreateGraphicsPipeline(pd);
RenderInfoCache.Add(key, ri);
return(ri);
}