protected virtual object EvalSampler_Declaration(ParseTree tree, params object[] paramlist)
{
var sampler = new SamplerStateInfo();
sampler.Name = this.GetValue(tree, TokenType.Identifier, 0) as string;
foreach (ParseNode node in Nodes)
{
node.Eval(tree, sampler);
}
var shaderInfo = paramlist[0] as ShaderInfo;
shaderInfo.SamplerStates.Add(sampler.Name, sampler);
return(null);
}
protected virtual object EvalSampler_Declaration(ParseTree tree, params object[] paramlist)
{
// if there is a comma or closing paren at the end this is a sampler as a parameter of a function
if (this.GetValue(tree, TokenType.Semicolon, 0) == null)
{
return(null);
}
var sampler = new SamplerStateInfo();
sampler.Name = this.GetValue(tree, TokenType.Identifier, 0) as string;
foreach (ParseNode node in Nodes)
{
node.Eval(tree, sampler);
}
var shaderInfo = paramlist[0] as ShaderInfo;
shaderInfo.SamplerStates.Add(sampler.Name, sampler);
return(null);
}
protected virtual object EvalSampler_Declaration(ParseTree tree, params object[] paramlist)
{
if (this.GetValue(tree, TokenType.SamplerState, 0) == null)
{
return(null);
}
var sampler = new SamplerStateInfo();
sampler.name = this.GetValue(tree, TokenType.Identifier, 0) as string;
sampler.state = new Microsoft.Xna.Framework.Graphics.SamplerState();
foreach (ParseNode node in Nodes)
{
node.Eval(tree, sampler);
}
// Figure out what kind of filter to set based on each individual min, mag, and mip filter
if (sampler.MinFilter == TextureFilterType.Anisotropic)
{
sampler.state.Filter = Microsoft.Xna.Framework.Graphics.TextureFilter.Anisotropic;
}
else if (sampler.MinFilter == TextureFilterType.Linear && sampler.MagFilter == TextureFilterType.Linear && sampler.MipFilter == TextureFilterType.Linear)
{
sampler.state.Filter = Microsoft.Xna.Framework.Graphics.TextureFilter.Linear;
}
else if (sampler.MinFilter == TextureFilterType.Linear && sampler.MagFilter == TextureFilterType.Linear && sampler.MipFilter == TextureFilterType.Point)
{
sampler.state.Filter = Microsoft.Xna.Framework.Graphics.TextureFilter.LinearMipPoint;
}
else if (sampler.MinFilter == TextureFilterType.Linear && sampler.MagFilter == TextureFilterType.Point && sampler.MipFilter == TextureFilterType.Linear)
{
sampler.state.Filter = Microsoft.Xna.Framework.Graphics.TextureFilter.MinLinearMagPointMipLinear;
}
else if (sampler.MinFilter == TextureFilterType.Linear && sampler.MagFilter == TextureFilterType.Point && sampler.MipFilter == TextureFilterType.Point)
{
sampler.state.Filter = Microsoft.Xna.Framework.Graphics.TextureFilter.MinLinearMagPointMipPoint;
}
else if (sampler.MinFilter == TextureFilterType.Point && sampler.MagFilter == TextureFilterType.Linear && sampler.MipFilter == TextureFilterType.Linear)
{
sampler.state.Filter = Microsoft.Xna.Framework.Graphics.TextureFilter.MinPointMagLinearMipLinear;
}
else if (sampler.MinFilter == TextureFilterType.Point && sampler.MagFilter == TextureFilterType.Linear && sampler.MipFilter == TextureFilterType.Point)
{
sampler.state.Filter = Microsoft.Xna.Framework.Graphics.TextureFilter.MinPointMagLinearMipPoint;
}
else if (sampler.MinFilter == TextureFilterType.Point && sampler.MagFilter == TextureFilterType.Point && sampler.MipFilter == TextureFilterType.Point)
{
sampler.state.Filter = Microsoft.Xna.Framework.Graphics.TextureFilter.Point;
}
else if (sampler.MinFilter == TextureFilterType.Point && sampler.MagFilter == TextureFilterType.Point && sampler.MipFilter == TextureFilterType.Linear)
{
sampler.state.Filter = Microsoft.Xna.Framework.Graphics.TextureFilter.PointMipLinear;
}
var shaderInfo = paramlist[0] as ShaderInfo;
shaderInfo.SamplerStates.Add(sampler.name, sampler);
return(null);
}
