private static bool ChangesFoundInStencil(
GLQueueRendererStencilState previous,
GLQueueRendererStencilState current
)
{
var mask = GLGraphicsPipelineFlagBits.StencilEnabled
| GLGraphicsPipelineFlagBits.TwoSidedStencilMode;
var pastFlags = mask & previous.Flags;
var nextFlags = mask & current.Flags;
return((pastFlags != nextFlags) || (!previous.Enums.Equals(current.Enums)));
}
private void ApplyStencilChanges(
GLQueueRendererStencilState past,
GLQueueRendererStencilState next)
{
var pastStencil = past.Enums;
var nextStencil = next.Enums;
if (past.Front.WriteMask != next.Front.WriteMask)
{
mStencil.SetStencilWriteMask(MgStencilFaceFlagBits.FRONT_BIT, next.Front.WriteMask);
}
var newStencilEnabled = (next.Flags & GLGraphicsPipelineFlagBits.StencilEnabled);
if (mStencil.IsStencilBufferEnabled != (newStencilEnabled != 0))
{
if (mStencil.IsStencilBufferEnabled)
{
mStencil.DisableStencilBuffer();
}
else
{
mStencil.EnableStencilBuffer();
if
(
nextStencil.FrontStencilFail != pastStencil.FrontStencilFail ||
nextStencil.FrontDepthBufferFail != pastStencil.FrontDepthBufferFail ||
nextStencil.FrontStencilPass != pastStencil.FrontStencilPass
)
{
mStencil.SetFrontFaceStencilOperation(nextStencil.FrontStencilFail, nextStencil.FrontDepthBufferFail, nextStencil.FrontStencilPass);
}
if
(
nextStencil.BackStencilFail != pastStencil.BackStencilFail ||
nextStencil.BackDepthBufferFail != pastStencil.BackDepthBufferFail ||
nextStencil.BackStencilPass != pastStencil.BackStencilPass
)
{
mStencil.SetBackFaceStencilOperation(nextStencil.BackStencilFail, nextStencil.BackDepthBufferFail, nextStencil.BackStencilPass);
}
}
}
}
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();
}
