static void setupDepthState(ref PipelineStateDesc desc, eShaderMacros macros)
{
// Enable depth for both opaque and transparent passes..
desc.GraphicsPipeline.DepthStencilDesc.DepthEnable = true;
desc.GraphicsPipeline.DepthStencilDesc.DepthFunc = ComparisonFunction.Less;
// ..and set it so the depth is written on opaque pass, but readonly on transparent one.
// With some luck, this should allow early Z rejection on both passes, saving tremendous amount of pixel shader invocations and fillrate bandwidth.
if (macros.HasFlag(eShaderMacros.OpaquePass))
{
desc.GraphicsPipeline.DepthStencilDesc.DepthWriteEnable = true;
}
else
{
desc.GraphicsPipeline.DepthStencilDesc.DepthWriteEnable = false;
// desc.premultipliedAlphaBlending();
RenderTargetBlendDesc blendDesc = new RenderTargetBlendDesc(false)
{
BlendEnable = true,
SrcBlend = BlendFactor.One,
DestBlend = BlendFactor.InvSrcAlpha,
SrcBlendAlpha = BlendFactor.One,
DestBlendAlpha = BlendFactor.One,
BlendOpAlpha = BlendOperation.Max,
};
desc.GraphicsPipeline.BlendDesc.setRenderTarget(blendDesc);
}
}
public VrmacStateBase(GpuResources resources, IRenderDevice device, ref PipelineStateDesc desc, iPipelineStateFactory stateFactory, eShaderMacros macros)
{
this.resources = resources;
shaderMacros = macros;
layoutUniforms(stateFactory);
stateFactory.setName($"2D state { macros }");
stateFactory.layoutVariable(ShaderType.Vertex, ShaderResourceVariableType.Mutable, varPaletteTexture);
stateFactory.layoutVariable(ShaderType.Pixel, ShaderResourceVariableType.Mutable, varPaletteTexture);
if (macros.HasFlag(eShaderMacros.TextureAtlas))
{
stateFactory.layoutVariable(ShaderType.Pixel, ShaderResourceVariableType.Mutable, varSpriteAtlas);
SamplerDesc samplerDesc = new SamplerDesc(false);
stateFactory.layoutStaticSampler(ShaderType.Pixel, ref samplerDesc, varSpriteAtlas);
resources.context.drawDevice.textureAtlas.resized.add(this, dropResourceBindings);
}
if (macros.HasFlag(eShaderMacros.TextRendering))
{
stateFactory.layoutVariable(ShaderType.Pixel, ShaderResourceVariableType.Mutable, varGrayscaleFontAtlas);
SamplerDesc samplerDesc = new SamplerDesc(false);
stateFactory.layoutStaticSampler(ShaderType.Pixel, ref samplerDesc, varGrayscaleFontAtlas);
stateFactory.layoutVariable(ShaderType.Pixel, ShaderResourceVariableType.Mutable, varCleartypeFontAtlas);
resources.initTextCBuffer();
}
declareResources(stateFactory);
stateFactory.apply(ref desc);
setupDepthState(ref desc, macros);
pipelineState = device.CreatePipelineState(ref desc);
resources.context.swapChainResized.add(this, (CSize s, double d) => dropResourceBindings());
resources.paletteTexture.textureResized.add(this, dropResourceBindings);
}
void layoutUniforms(iPipelineStateFactory stateFactory)
{
// See #if preprocessor expression in utils.hlsli around that buffer
bool hasConstants = !shaderMacros.HasFlag(eShaderMacros.OpaquePass) || shaderMacros.HasFlag(eShaderMacros.TextRendering);
if (hasConstants)
{
stateFactory.layoutVariable(ShaderType.Vertex, ShaderResourceVariableType.Mutable, varStaticConstantsBuffer);
stateFactory.layoutVariable(ShaderType.Pixel, ShaderResourceVariableType.Mutable, varStaticConstantsBuffer);
}
}
VrmacStateBase compileState(eShaderMacros macros)
{
using (var dev = resources.context.renderContext.device)
using (var stateFactory = dev.CreatePipelineStateFactory())
{
PipelineStateDesc desc = createStateDesc();
setupIdLayout(stateFactory);
compileShaders(dev, stateFactory, "draw", macros);
if (macros.HasFlag(eShaderMacros.FewDrawCalls))
{
return(new FewDrawCallsState(resources, dev, ref desc, stateFactory, macros));
}
return(new MoreDrawCallsState(resources, dev, ref desc, stateFactory, macros));
}
}
static string macroValue(eShaderMacros vals, eShaderMacros bit)
{
return(vals.HasFlag(bit) ? "1" : "0");
}