public static PipelineStateDesc createStateDesc(Context context)
{
PipelineStateDesc desc = new PipelineStateDesc(false);
desc.setBufferFormats(context);
desc.GraphicsPipeline.PrimitiveTopology = PrimitiveTopology.TriangleStrip;
desc.GraphicsPipeline.RasterizerDesc.CullMode = CullMode.Back;
desc.GraphicsPipeline.DepthStencilDesc.DepthEnable = false;
return(desc);
}
// Create PipelineStateDesc with some essential setup
PipelineStateDesc createStateDesc()
{
PipelineStateDesc desc = new PipelineStateDesc(false);
desc.GraphicsPipeline.NumRenderTargets = 1;
desc.setBufferFormats(resources.context);
desc.GraphicsPipeline.PrimitiveTopology = PrimitiveTopology.TriangleList;
desc.GraphicsPipeline.RasterizerDesc.CullMode = CullMode.None;
desc.GraphicsPipeline.DepthStencilDesc.DepthEnable = true;
desc.ResourceLayout.DefaultVariableType = ShaderResourceVariableType.Static;
return(desc);
}
public Blender(Context context, IRenderDevice device, byte samplesCount)
{
PipelineStateDesc desc = new PipelineStateDesc(false);
desc.setBufferFormats(context);
desc.premultipliedAlphaBlending();
desc.GraphicsPipeline.PrimitiveTopology = PrimitiveTopology.TriangleList;
desc.GraphicsPipeline.RasterizerDesc.CullMode = CullMode.None;
desc.GraphicsPipeline.DepthStencilDesc.DepthEnable = false;
iShaderFactory shaderFactory = device.GetShaderFactory();
iStorageFolder assets = StorageFolder.embeddedResources(Assembly.GetExecutingAssembly(), resourceSubfolder);
using (iPipelineStateFactory stateFactory = device.CreatePipelineStateFactory())
{
stateFactory.layoutVariable(ShaderType.Pixel, ShaderResourceVariableType.Mutable, textureVarName);
stateFactory.graphicsVertexShader(shaderFactory.compileShader(assets, "Blend", ShaderType.Vertex));
ShaderSourceInfo ssi;
string src;
if (RuntimeEnvironment.operatingSystem == eOperatingSystem.Windows)
{
ssi = new ShaderSourceInfo(ShaderType.Pixel, ShaderSourceLanguage.Hlsl);
src = "BlendPS.hlsl";
}
else
{
ssi = new ShaderSourceInfo(ShaderType.Pixel, ShaderSourceLanguage.Glsl);
ssi.combinedTextureSamplers = true;
src = "BlendPS.glsl";
}
string name = $"BlendPS { samplesCount }x";
var ps = shaderFactory.compileFromFile(assets, src, ssi, name, shaderMacros(samplesCount));
stateFactory.graphicsPixelShader(ps);
stateFactory.apply(ref desc);
pipelineState = device.CreatePipelineState(ref desc);
}
this.samplesCount = samplesCount;
}
void createPipelineState(IRenderDevice device, iStorageFolder assets)
{
PipelineStateDesc PSODesc = new PipelineStateDesc(false);
PSODesc.setBufferFormats(context);
// Primitive topology defines what kind of primitives will be rendered by this pipeline state
PSODesc.GraphicsPipeline.PrimitiveTopology = PrimitiveTopology.TriangleList;
// Cull back faces
PSODesc.GraphicsPipeline.RasterizerDesc.CullMode = CullMode.Back;
// Enable depth testing
PSODesc.GraphicsPipeline.DepthStencilDesc.DepthEnable = true;
iShaderFactory shaderFactory = device.GetShaderFactory();
// We won't be using the factory object after this, `using` to release the COM interface once finished
using (iPipelineStateFactory stateFactory = device.CreatePipelineStateFactory())
{
stateFactory.setName("Cube PSO");
// Compile the two shaders
ShaderSourceInfo sourceInfo = new ShaderSourceInfo(ShaderType.Vertex, ShaderSourceLanguage.Hlsl);
sourceInfo.combinedTextureSamplers = true; // This appears to be the requirement of OpenGL backend.
// In this tutorial, we will load shaders from resources embedded into this .NET DLL.
var vs = shaderFactory.compileFromFile(assets, "cube.vsh", sourceInfo, "Cube VS");
stateFactory.graphicsVertexShader(vs);
// Create dynamic uniform buffer that will store our transformation matrix. Dynamic buffers can be frequently updated by the CPU.
BufferDesc CBDesc = new BufferDesc(false);
CBDesc.uiSizeInBytes = Marshal.SizeOf <Matrix4x4>();
CBDesc.Usage = Usage.Dynamic;
CBDesc.BindFlags = BindFlags.UniformBuffer;
CBDesc.CPUAccessFlags = CpuAccessFlags.Write;
vsConstants = device.CreateBuffer(CBDesc, "VS constants CB");
// Create a pixel shader
sourceInfo.shaderType = ShaderType.Pixel;
var ps = shaderFactory.compileFromFile(assets, "cube.psh", sourceInfo, "Cube PS");
stateFactory.graphicsPixelShader(ps);
// Define vertex shader input layout
// Attribute 0 - vertex position
LayoutElement elt = new LayoutElement(false)
{
InputIndex = 0,
BufferSlot = 0,
NumComponents = 3,
ValueType = GpuValueType.Float32,
IsNormalized = false
};
stateFactory.graphicsLayoutElement(elt);
// Attribute 1 - texture coordinates
elt.InputIndex = 1;
elt.NumComponents = 2;
stateFactory.graphicsLayoutElement(elt);
// Define variable type that will be used by default
PSODesc.ResourceLayout.DefaultVariableType = ShaderResourceVariableType.Static;
// Shader variables should typically be mutable, which means they are expected to change on a per-instance basis
stateFactory.layoutVariable(ShaderType.Pixel, ShaderResourceVariableType.Mutable, "g_Texture");
// Define static sampler for g_Texture. Static samplers should be used whenever possible.
// The default constructor is good enough, it sets FilterType.Linear and TextureAddressMode.Clamp for all 3 coordinates.
SamplerDesc samplerDesc = new SamplerDesc(false);
stateFactory.layoutStaticSampler(ShaderType.Pixel, ref samplerDesc, "g_Texture");
stateFactory.apply(ref PSODesc);
pipelineState = device.CreatePipelineState(ref PSODesc);
}
// Since we did not explicitly specify the type for 'Constants' variable, default
// type (SHADER_RESOURCE_VARIABLE_TYPE_STATIC) will be used. Static variables never
// change and are bound directly through the pipeline state object.
pipelineState.GetStaticVariableByName(ShaderType.Vertex, "Constants").Set(vsConstants);
// Since we are using mutable variable, we must create a shader resource binding object
// http://diligentgraphics.com/2016/03/23/resource-binding-model-in-diligent-engine-2-0/
resourceBinding = pipelineState.CreateShaderResourceBinding(true);
}
public TeapotResources(Context context, IRenderDevice device)
{
PipelineStateDesc PSODesc = new PipelineStateDesc(false);
PSODesc.setBufferFormats(context);
// Primitive topology defines what kind of primitives will be rendered by this pipeline state
PSODesc.GraphicsPipeline.PrimitiveTopology = PrimitiveTopology.TriangleList;
// Cull back faces
PSODesc.GraphicsPipeline.RasterizerDesc.CullMode = CullMode.Back;
// Enable depth testing
PSODesc.GraphicsPipeline.DepthStencilDesc.DepthEnable = true;
iShaderFactory shaderFactory = device.GetShaderFactory();
// We won't be using the device object after this, `using` is to release the COM interface once finished
using (iPipelineStateFactory stateFactory = device.CreatePipelineStateFactory())
{
stateFactory.setName("Teapot PSO");
// Compile the two shaders
ShaderSourceInfo sourceInfo = new ShaderSourceInfo(ShaderType.Vertex, ShaderSourceLanguage.Hlsl);
sourceInfo.combinedTextureSamplers = true; // This appears to be the requirement of OpenGL backend.
// In this tutorial, we will load shaders from resources embedded into this .NET DLL.
iStorageFolder resources = StorageFolder.embeddedResources(Assembly.GetExecutingAssembly(), resourcesFolder);
var vs = shaderFactory.compileFromFile(resources, "TeapotVS.hlsl", sourceInfo, "Teapot VS");
stateFactory.graphicsVertexShader(vs);
// Create dynamic uniform buffer that will store our transformation matrix. Dynamic buffers can be frequently updated by the CPU.
vsConstants = device.CreateDynamicUniformBuffer <VsConstants>("VS constants CB");
// Create a pixel shader
sourceInfo.shaderType = ShaderType.Pixel;
var ps = shaderFactory.compileFromFile(resources, "TeapotPS.hlsl", sourceInfo, "Teapot PS");
stateFactory.graphicsPixelShader(ps);
// Define vertex shader input layout
// Attribute 0 - vertex position
LayoutElement elt = new LayoutElement(false)
{
InputIndex = 0,
BufferSlot = 0,
NumComponents = 3,
ValueType = GpuValueType.Float32,
IsNormalized = false
};
stateFactory.graphicsLayoutElement(elt);
// Attribute 1 - normals, they are generated by STL loader because we ask for them.
elt.InputIndex = 1;
elt.NumComponents = 3;
stateFactory.graphicsLayoutElement(elt);
// Define variable type that will be used by default
PSODesc.ResourceLayout.DefaultVariableType = ShaderResourceVariableType.Static;
stateFactory.apply(ref PSODesc);
pipelineState = device.CreatePipelineState(ref PSODesc);
}
// Since we did not explicitly specify the type for 'Constants' variable, default
// type (SHADER_RESOURCE_VARIABLE_TYPE_STATIC) will be used. Static variables never
// change and are bound directly through the pipeline state object.
pipelineState.GetStaticVariableByName(ShaderType.Vertex, "Constants").Set(vsConstants);
// Create a shader resource binding object and bind all static resources in it
resourceBinding = pipelineState.CreateShaderResourceBinding(true);
}
protected override void createResources(IRenderDevice device)
{
// Diligent Engine can use HLSL source on all supported platforms.
// It will convert HLSL to GLSL in OpenGL mode, while Vulkan backend will compile it directly to SPIRV.
string VSSource = @"
struct PSInput
{
float4 Pos : SV_POSITION;
float3 Color : COLOR;
};
void main( in uint VertId : SV_VertexID, out PSInput PSIn )
{
float4 Pos[3];
Pos[0] = float4(-0.5, -0.5, 0.0, 1.0);
Pos[1] = float4( 0.0, +0.5, 0.0, 1.0);
Pos[2] = float4(+0.5, -0.5, 0.0, 1.0);
float3 Col[3];
Col[0] = float3(1.0, 0.0, 0.0); // red
Col[1] = float3(0.0, 1.0, 0.0); // green
Col[2] = float3(0.0, 0.0, 1.0); // blue
PSIn.Pos = Pos[VertId];
PSIn.Color = Col[VertId];
}";
string PSSource = @"
struct PSInput
{
float4 Pos : SV_POSITION;
float3 Color : COLOR;
};
struct PSOutput
{
float4 Color : SV_TARGET;
};
void main( in PSInput PSIn, out PSOutput PSOut )
{
PSOut.Color = float4(PSIn.Color.rgb, 1.0);
}
";
PipelineStateDesc PSODesc = new PipelineStateDesc(false);
PSODesc.setBufferFormats(context);
// Primitive topology defines what kind of primitives will be rendered by this pipeline state
PSODesc.GraphicsPipeline.PrimitiveTopology = PrimitiveTopology.TriangleList;
// No back face culling for this tutorial
PSODesc.GraphicsPipeline.RasterizerDesc.CullMode = CullMode.None;
// Disable depth testing
PSODesc.GraphicsPipeline.DepthStencilDesc.DepthEnable = false;
iShaderFactory shaderFactory = device.GetShaderFactory();
// We won't be using the device object after this, `using` is to release the COM interface once finished
using (iPipelineStateFactory stateFactory = device.CreatePipelineStateFactory())
{
// Compile the two shaders
ShaderSourceInfo sourceInfo = new ShaderSourceInfo(ShaderType.Vertex, ShaderSourceLanguage.Hlsl);
sourceInfo.combinedTextureSamplers = true; // This appears to be the requirement of OpenGL backend.
using (var vs = shaderFactory.compileFromSource(VSSource, sourceInfo))
stateFactory.graphicsVertexShader(vs);
sourceInfo.shaderType = ShaderType.Pixel;
using (var ps = shaderFactory.compileFromSource(PSSource, sourceInfo))
stateFactory.graphicsPixelShader(ps);
stateFactory.apply(ref PSODesc);
pipelineState = device.CreatePipelineState(ref PSODesc);
}
}