public void SetBlendFuncRgb(BlendFuncMode arg1, BlendFuncFactor arg2, BlendFuncFactor arg3)
{
// Debug.Assert(false);
SetBlendFuncRgb(new BlendFunc(arg1, arg2, arg3));
}
/// <summary>Sets a value to the the structure representing the alpha-blending function</summary>
/// <param name="mode">Alpha-blending function mode</param>
/// <param name="srcFactor">Alpha-blending function source coefficient</param>
/// <param name="dstFactor">Alpha-blending function destination coefficient</param>
public void Set(BlendFuncMode mode, BlendFuncFactor srcFactor, BlendFuncFactor dstFactor)
{
this.bits = ((uint)((int)mode | (int)((uint)srcFactor << 8)) | ((uint)dstFactor << 16));
}
public void SetBlendFunc(BlendFuncMode mode, BlendFuncFactor srcFactor, BlendFuncFactor dstFactor)
{
__blendFunc = new BlendFunc(mode, srcFactor, dstFactor);
BlendEquationMode _mode = BlendEquationMode.FuncAdd;
switch (mode)
{
case BlendFuncMode.Add:
_mode = BlendEquationMode.FuncAdd;
break;
default:
Debug.Assert(false);
break;
}
BlendingFactorSrc _src = BlendingFactorSrc.SrcAlpha;
BlendingFactorDest _dst = BlendingFactorDest.OneMinusSrcAlpha;
switch (srcFactor)
{
case BlendFuncFactor.Zero:
_src = BlendingFactorSrc.Zero;
break;
case BlendFuncFactor.SrcAlpha:
_src = BlendingFactorSrc.SrcAlpha;
break;
case BlendFuncFactor.OneMinusSrcAlpha:
_src = BlendingFactorSrc.OneMinusSrcAlpha;
break;
case BlendFuncFactor.One:
_src = BlendingFactorSrc.One;
break;
case BlendFuncFactor.DstColor:
_src = BlendingFactorSrc.DstColor;
break;
default:
Debug.Assert(false);
break;
}
switch (dstFactor)
{
case BlendFuncFactor.Zero:
_dst = BlendingFactorDest.Zero;
break;
case BlendFuncFactor.SrcAlpha:
_dst = BlendingFactorDest.SrcAlpha;
break;
case BlendFuncFactor.OneMinusSrcAlpha:
_dst = BlendingFactorDest.OneMinusSrcAlpha;
break;
case BlendFuncFactor.One:
_dst = BlendingFactorDest.One;
break;
case BlendFuncFactor.DstColor:
_dst = BlendingFactorDest.DstColor;
break;
default:
Debug.Assert(false);
break;
}
//FIXME:??????in SpriteSample, for sprite black bg problem
//GL.DepthMask(false); //not good
GL.Clear(ClearBufferMask.DepthBufferBit);
GL.BlendEquation(_mode);
GL.BlendFunc(_src, _dst);
}
public BlendStateDesc(BlendStateTypes type)
{
colorMask = ColorMask.Rgba;
switch (type)
{
case BlendStateTypes.None:
blendEnable = false;
blendOp = BlendFuncMode.Add;
srcBlend = BlendFuncFactor.One;
dstBlend = BlendFuncFactor.One;
blendEnableAlpha = false;
blendOpAlpha = BlendFuncMode.Add;
srcBlendAlpha = BlendFuncFactor.One;
dstBlendAlpha = BlendFuncFactor.One;
break;
case BlendStateTypes.Add:
blendEnable = true;
blendOp = BlendFuncMode.Add;
srcBlend = BlendFuncFactor.One;
dstBlend = BlendFuncFactor.One;
blendEnableAlpha = false;
blendOpAlpha = BlendFuncMode.Add;
srcBlendAlpha = BlendFuncFactor.One;
dstBlendAlpha = BlendFuncFactor.One;
break;
case BlendStateTypes.Subtract:
blendEnable = true;
blendOp = BlendFuncMode.Subtract;
srcBlend = BlendFuncFactor.One;
dstBlend = BlendFuncFactor.One;
blendEnableAlpha = false;
blendOpAlpha = BlendFuncMode.Subtract;
srcBlendAlpha = BlendFuncFactor.One;
dstBlendAlpha = BlendFuncFactor.One;
break;
case BlendStateTypes.RevSubtract:
blendEnable = true;
blendOp = BlendFuncMode.Subtract;
srcBlend = BlendFuncFactor.One;
dstBlend = BlendFuncFactor.One;
blendEnableAlpha = false;
blendOpAlpha = BlendFuncMode.Subtract;
srcBlendAlpha = BlendFuncFactor.One;
dstBlendAlpha = BlendFuncFactor.One;
break;
case BlendStateTypes.Alpha:
blendEnable = true;
blendOp = BlendFuncMode.Add;
srcBlend = BlendFuncFactor.SrcAlpha;
dstBlend = BlendFuncFactor.OneMinusSrcAlpha;
blendEnableAlpha = false;
blendOpAlpha = BlendFuncMode.Add;
srcBlendAlpha = BlendFuncFactor.SrcAlpha;
dstBlendAlpha = BlendFuncFactor.OneMinusSrcAlpha;
break;
default:
Debug.ThrowError("BlendStateDesc", "Unsuported BlendStateType");
break;
}
}
public BlendStateDesc(BlendStateTypes type)
{
colorMask = ColorMask.Rgba;
switch (type)
{
case BlendStateTypes.None:
blendEnable = false;
blendOp = BlendFuncMode.Add;
srcBlend = BlendFuncFactor.One;
dstBlend = BlendFuncFactor.One;
blendEnableAlpha = false;
blendOpAlpha = BlendFuncMode.Add;
srcBlendAlpha = BlendFuncFactor.One;
dstBlendAlpha = BlendFuncFactor.One;
break;
case BlendStateTypes.Add:
blendEnable = true;
blendOp = BlendFuncMode.Add;
srcBlend = BlendFuncFactor.One;
dstBlend = BlendFuncFactor.One;
blendEnableAlpha = false;
blendOpAlpha = BlendFuncMode.Add;
srcBlendAlpha = BlendFuncFactor.One;
dstBlendAlpha = BlendFuncFactor.One;
break;
case BlendStateTypes.Subtract:
blendEnable = true;
blendOp = BlendFuncMode.Subtract;
srcBlend = BlendFuncFactor.One;
dstBlend = BlendFuncFactor.One;
blendEnableAlpha = false;
blendOpAlpha = BlendFuncMode.Subtract;
srcBlendAlpha = BlendFuncFactor.One;
dstBlendAlpha = BlendFuncFactor.One;
break;
case BlendStateTypes.RevSubtract:
blendEnable = true;
blendOp = BlendFuncMode.Subtract;
srcBlend = BlendFuncFactor.One;
dstBlend = BlendFuncFactor.One;
blendEnableAlpha = false;
blendOpAlpha = BlendFuncMode.Subtract;
srcBlendAlpha = BlendFuncFactor.One;
dstBlendAlpha = BlendFuncFactor.One;
break;
case BlendStateTypes.Alpha:
blendEnable = true;
blendOp = BlendFuncMode.Add;
srcBlend = BlendFuncFactor.SrcAlpha;
dstBlend = BlendFuncFactor.OneMinusSrcAlpha;
blendEnableAlpha = false;
blendOpAlpha = BlendFuncMode.Add;
srcBlendAlpha = BlendFuncFactor.SrcAlpha;
dstBlendAlpha = BlendFuncFactor.OneMinusSrcAlpha;
break;
default:
Debug.ThrowError("BlendStateDesc", "Unsuported BlendStateType");
break;
}
}
/// <summary>Sets the alpha-blending function (for the alpha channel)</summary>
/// <param name="mode">Alpha-blending function mode</param>
/// <param name="srcFactor">Alpha-blending function source coefficient</param>
/// <param name="dstFactor">Alpha-blending function destination coefficient</param>
public void SetBlendFuncAlpha(BlendFuncMode mode, BlendFuncFactor srcFactor, BlendFuncFactor dstFactor)
{
this.SetBlendFuncAlpha(new BlendFunc(mode, srcFactor, dstFactor));
}
public BlendFunc(BlendFuncMode mode, BlendFuncFactor srcFactor, BlendFuncFactor dstFactor)
{
this.mode = mode;
this.srcFactor = srcFactor;
this.dstFactor = dstFactor;
}
