public void ParseRenderState(string name, string value)
{
Blend blend;
switch (name.ToLower())
{
case "alphablendenable":
if (!ParseTreeTools.ParseBool(value))
{
if (blendState == null)
{
blendState = new BlendState();
}
blendState.ColorSourceBlend = Blend.One;
blendState.AlphaSourceBlend = Blend.One;
blendState.ColorDestinationBlend = Blend.Zero;
blendState.AlphaDestinationBlend = Blend.Zero;
}
break;
case "srcblend":
blend = ParseTreeTools.ParseBlend(value);
if (blendState == null)
{
blendState = new BlendState();
}
blendState.ColorSourceBlend = blend;
blendState.AlphaSourceBlend = ToAlphaBlend(blend);
break;
case "destblend":
blend = ParseTreeTools.ParseBlend(value);
if (blendState == null)
{
blendState = new BlendState();
}
blendState.ColorDestinationBlend = blend;
blendState.AlphaDestinationBlend = ToAlphaBlend(blend);
break;
case "blendop":
if (blendState == null)
{
blendState = new BlendState();
}
blendState.AlphaBlendFunction = ParseTreeTools.ParseBlendFunction(value);
break;
case "zenable":
if (depthStencilState == null)
{
depthStencilState = new DepthStencilState();
}
depthStencilState.DepthBufferEnable = ParseTreeTools.ParseBool(value);
break;
case "zwriteenable":
if (depthStencilState == null)
{
depthStencilState = new DepthStencilState();
}
depthStencilState.DepthBufferWriteEnable = ParseTreeTools.ParseBool(value);
break;
case "depthbias":
if (rasterizerState == null)
{
rasterizerState = new RasterizerState();
}
rasterizerState.DepthBias = float.Parse(value);
break;
case "cullmode":
if (rasterizerState == null)
{
rasterizerState = new RasterizerState();
}
rasterizerState.CullMode = ParseTreeTools.ParseCullMode(value);
break;
case "fillmode":
if (rasterizerState == null)
{
rasterizerState = new RasterizerState();
}
rasterizerState.FillMode = ParseTreeTools.ParseFillMode(value);
break;
case "multisampleantialias":
if (rasterizerState == null)
{
rasterizerState = new RasterizerState();
}
rasterizerState.MultiSampleAntiAlias = ParseTreeTools.ParseBool(value);
break;
case "slopescaledepthbias":
if (rasterizerState == null)
{
rasterizerState = new RasterizerState();
}
rasterizerState.SlopeScaleDepthBias = float.Parse(value);
break;
}
}
protected virtual object EvalRender_State_Expression(ParseTree tree, params object[] paramlist)
{
var pass = paramlist[0] as PassInfo;
var name = this.GetValue(tree, TokenType.Identifier, 0) as string;
var value = (this.GetValue(tree, TokenType.Identifier, 1) ?? this.GetValue(tree, TokenType.Number, 0)) as string;
Microsoft.Xna.Framework.Graphics.Blend blend;
switch (name.ToLower())
{
case "alphablendenable":
if (!ParseTreeTools.ParseBool(value))
{
if (pass.blendState == null)
{
pass.blendState = new Microsoft.Xna.Framework.Graphics.BlendState();
}
pass.blendState.AlphaSourceBlend = Microsoft.Xna.Framework.Graphics.Blend.One;
pass.blendState.ColorSourceBlend = Microsoft.Xna.Framework.Graphics.Blend.One;
pass.blendState.ColorDestinationBlend = Microsoft.Xna.Framework.Graphics.Blend.Zero;
pass.blendState.AlphaDestinationBlend = Microsoft.Xna.Framework.Graphics.Blend.Zero;
}
break;
case "srcblend":
blend = ParseTreeTools.ParseBlend(value);
if (pass.blendState == null)
{
pass.blendState = new Microsoft.Xna.Framework.Graphics.BlendState();
}
pass.blendState.AlphaSourceBlend = blend;
pass.blendState.ColorSourceBlend = blend;
break;
case "destblend":
blend = ParseTreeTools.ParseBlend(value);
if (pass.blendState == null)
{
pass.blendState = new Microsoft.Xna.Framework.Graphics.BlendState();
}
pass.blendState.AlphaDestinationBlend = blend;
pass.blendState.ColorDestinationBlend = blend;
break;
case "blendop":
if (pass.blendState == null)
{
pass.blendState = new Microsoft.Xna.Framework.Graphics.BlendState();
}
pass.blendState.AlphaBlendFunction = ParseTreeTools.ParseBlendFunction(value);
break;
case "zenable":
if (pass.depthStencilState == null)
{
pass.depthStencilState = new Microsoft.Xna.Framework.Graphics.DepthStencilState();
}
pass.depthStencilState.DepthBufferEnable = ParseTreeTools.ParseBool(value);
break;
case "zwriteenable":
if (pass.depthStencilState == null)
{
pass.depthStencilState = new Microsoft.Xna.Framework.Graphics.DepthStencilState();
}
pass.depthStencilState.DepthBufferWriteEnable = ParseTreeTools.ParseBool(value);
break;
case "depthbias":
if (pass.rasterizerState == null)
{
pass.rasterizerState = new Microsoft.Xna.Framework.Graphics.RasterizerState();
}
pass.rasterizerState.DepthBias = float.Parse(value);
break;
case "cullmode":
if (pass.rasterizerState == null)
{
pass.rasterizerState = new Microsoft.Xna.Framework.Graphics.RasterizerState();
}
pass.rasterizerState.CullMode = ParseTreeTools.ParseCullMode(value);
break;
case "fillmode":
if (pass.rasterizerState == null)
{
pass.rasterizerState = new Microsoft.Xna.Framework.Graphics.RasterizerState();
}
pass.rasterizerState.FillMode = ParseTreeTools.ParseFillMode(value);
break;
case "multisampleantialias":
if (pass.rasterizerState == null)
{
pass.rasterizerState = new Microsoft.Xna.Framework.Graphics.RasterizerState();
}
pass.rasterizerState.MultiSampleAntiAlias = ParseTreeTools.ParseBool(value);
break;
case "slopescaledepthbias":
if (pass.rasterizerState == null)
{
pass.rasterizerState = new Microsoft.Xna.Framework.Graphics.RasterizerState();
}
pass.rasterizerState.SlopeScaleDepthBias = float.Parse(value);
break;
default:
break;
}
return(null);
}
