private void SetupBlendSettings(IGLGraphicsPipeline pipeline)
{
if (ChangesFoundInBlend(pipeline.ColorBlendEnums))
{
ApplyBlendChanges(pipeline.ColorBlendEnums);
mPastColorBlendEnums = pipeline.ColorBlendEnums;
}
}
public void Initialize()
{
const int NO_OF_COLOR_ATTACHMENTS = 4;
mPastColorBlendEnums = mBlend.Initialize(NO_OF_COLOR_ATTACHMENTS);
var initialStencilValue = mStencil.Initialize();
mPastStencilInfo = initialStencilValue;
mPastFrontWriteMask = initialStencilValue.Front.WriteMask;
mPastBackWriteMask = initialStencilValue.Back.WriteMask;
mPastFrontStencilInfo = new GLCmdStencilFunctionInfo
{
CompareMask = initialStencilValue.Front.CompareMask,
ReferenceMask = initialStencilValue.Front.Reference,
StencilFunction = initialStencilValue.Enums.FrontStencilFunction,
};
mPastBackStencilInfo = new GLCmdStencilFunctionInfo
{
CompareMask = initialStencilValue.Back.CompareMask,
ReferenceMask = initialStencilValue.Back.Reference,
StencilFunction = initialStencilValue.Enums.BackStencilFunction,
};
var initialDepthValue = mDepth.Initialize();
PreviousPipeline = new GLCmdBufferPipelineItem {
DepthState = initialDepthValue,
StencilState = initialStencilValue.Enums,
};
mPastRasterization = mRaster.Initialize();
mPastClearValues = mClear.Initialize();
}
private bool ChangesFoundInBlend(GLGraphicsPipelineBlendColorState next)
{
if (mPastColorBlendEnums == null && next != null)
{
return(true);
}
if (mPastColorBlendEnums != null && next == null)
{
return(false);
}
if (mPastColorBlendEnums.Attachments.Length != next.Attachments.Length)
{
return(true);
}
if (mPastColorBlendEnums.LogicOpEnable != next.LogicOpEnable)
{
return(true);
}
if (mPastColorBlendEnums.LogicOp != next.LogicOp)
{
return(true);
}
for (uint i = 0; i < next.Attachments.Length; ++i)
{
if (!mPastColorBlendEnums.Attachments[i].Equals(next.Attachments[i]))
{
return(true);
}
}
return(false);
}
private void ApplyBlendChanges(GLGraphicsPipelineBlendColorState current)
{
if (mPastColorBlendEnums.LogicOpEnable != current.LogicOpEnable || mPastColorBlendEnums.LogicOp != current.LogicOp)
{
mBlend.EnableLogicOp(current.LogicOpEnable);
mBlend.LogicOp(current.LogicOp);
}
uint leftSize = (uint)mPastColorBlendEnums.Attachments.Length;
uint rightSize = (uint)current.Attachments.Length;
uint fullLoop = Math.Max(leftSize, rightSize);
for (uint i = 0; i < fullLoop; ++i)
{
bool hasPastValue = (i < leftSize);
bool hasNextValue = (i < rightSize);
if (hasPastValue && hasNextValue)
{
var past = mPastColorBlendEnums.Attachments[i];
var next = current.Attachments[i];
// bool blendEnabled = !(next.Value.SrcColorBlendFactor == MgBlendFactor.ONE &&
// next.Value.DstColorBlendFactor == MgBlendFactor.ZERO &&
// next.Value.SrcAlphaBlendFactor == MgBlendFactor.ONE &&
// next.Value.DstAlphaBlendFactor == MgBlendFactor.ZERO);
if (past.BlendEnable != next.BlendEnable)
{
mBlend.EnableBlending(i, next.BlendEnable);
}
if (next.SrcColorBlendFactor != past.SrcColorBlendFactor ||
next.DstColorBlendFactor != past.DstColorBlendFactor ||
next.SrcAlphaBlendFactor != past.SrcAlphaBlendFactor ||
next.DstAlphaBlendFactor != past.DstAlphaBlendFactor)
{
mBlend.ApplyBlendSeparateFunction(
i,
next.SrcColorBlendFactor,
next.DstColorBlendFactor,
next.SrcAlphaBlendFactor,
next.DstAlphaBlendFactor);
}
if (past.ColorWriteMask != next.ColorWriteMask)
{
mBlend.SetColorMask(i, next.ColorWriteMask);
}
}
else if (!hasPastValue && hasNextValue)
{
var next = current.Attachments[i];
// bool blendEnabled = !(next.Value.SrcColorBlendFactor == MgBlendFactor.ONE &&
// next.Value.DstColorBlendFactor == MgBlendFactor.ZERO &&
// next.Value.SrcAlphaBlendFactor == MgBlendFactor.ONE &&
// next.Value.DstAlphaBlendFactor == MgBlendFactor.ZERO);
mBlend.EnableBlending(i, next.BlendEnable);
mBlend.ApplyBlendSeparateFunction(
i,
next.SrcColorBlendFactor,
next.DstColorBlendFactor,
next.SrcAlphaBlendFactor,
next.DstAlphaBlendFactor);
mBlend.SetColorMask(i, next.ColorWriteMask);
}
}
}
