void DoRender()
{ // Retrieve existing pipeline states for backup
RawColor4 oldBlendFactor;
int oldSampleMask;
int oldStencil;
var oldPSBufs = context.PixelShader.GetConstantBuffers(0, 1);
using (var oldVS = context.VertexShader.Get())
using (var oldPS = context.PixelShader.Get())
using (var oldGS = context.GeometryShader.Get())
using (var oldSamp = context.PixelShader.GetSamplers(0, 1).FirstOrDefault())
using (var oldBlendState = context.OutputMerger.GetBlendState(out oldBlendFactor, out oldSampleMask))
using (var oldIA = context.InputAssembler.InputLayout)
using (var oldDepth = context.OutputMerger.GetDepthStencilState(out oldStencil))
{
#region DrawingLogic
// There is no input layout for this renderer
context.InputAssembler.InputLayout = null;
// The triangle strip input topology
context.InputAssembler.PrimitiveTopology = SharpDX.Direct3D.PrimitiveTopology.TriangleStrip;
// Disable depth write
context.OutputMerger.SetDepthStencilState(disableDepthWrite);
// Set the additive blend state
if (!UseLightenBlend)
{
context.OutputMerger.SetBlendState(blendState, null, 0xFFFFFFFF);
}
else
{
context.OutputMerger.SetBlendState(blendStateLight, Color.White, 0xFFFFFFFF);
}
// Assign consume particle buffer SRV to vertex shader
context.VertexShader.SetShaderResource(0, particleSRVs[1]);
context.VertexShader.Set(vertexShader);
// Set pixel shader resources
context.PixelShader.SetShaderResource(0, particleTextureSRV);
context.PixelShader.SetSampler(0, linearSampler);
context.PixelShader.Set(pixelShader);
SetConstants();
// Draw the number of quad instances stored in the
// indirectArgsBuffer. The vertex shader will rely upon
// the SV_VertexID and SV_InstanceID input semantics
context.DrawInstancedIndirect(indirectArgsBuffer, 0);
#endregion
// Restore previous pipeline state
context.VertexShader.Set(oldVS);
context.PixelShader.SetConstantBuffers(0, oldPSBufs);
context.PixelShader.Set(oldPS);
context.GeometryShader.Set(oldGS);
context.PixelShader.SetSampler(0, oldSamp);
context.InputAssembler.InputLayout = oldIA;
// Restore previous blend and depth state
context.OutputMerger.SetBlendState(oldBlendState, oldBlendFactor, oldSampleMask);
context.OutputMerger.SetDepthStencilState(oldDepth, oldStencil);
}
}
public void Draw(DeviceContext ctx)
{
if (this.props.AllowIndexBuffer)
{
ctx.DrawIndexedInstancedIndirect(this.buffer.Buffer, this.Prop.DrawOffset);
}
else
{
ctx.DrawInstancedIndirect(this.buffer.Buffer, this.Prop.DrawOffset);
}
}
protected override void DrawIndirectCore(DeviceBuffer indirectBuffer, uint offset, uint drawCount, uint stride)
{
PreDrawCommand();
D3D11Buffer d3d11Buffer = Util.AssertSubtype <DeviceBuffer, D3D11Buffer>(indirectBuffer);
int currentOffset = (int)offset;
for (uint i = 0; i < drawCount; i++)
{
_context.DrawInstancedIndirect(d3d11Buffer.Buffer, currentOffset);
currentOffset += (int)stride;
}
}
public void Draw(DeviceContext ctx)
{
if (this.props.AllowIndexBuffer)
{
ctx.DrawIndexedInstancedIndirect(this.buffer.Buffer, this.Prop.DrawOffset);
}
else
{
ctx.DrawInstancedIndirect(this.buffer.Buffer, this.Prop.DrawOffset);
}
}
public override void Draw(DeviceContext ctx)
{
ctx.DrawInstancedIndirect(this.indbuffer.Buffer, 0);
}
public void Draw(DeviceContext ctx)
{
ctx.DrawInstancedIndirect(this.indbuffer.Buffer, 0);
}