private void ApplyDepthChanges(GLCmdBufferPipelineItem next)
{
var enabled = (next.Flags & GLGraphicsPipelineFlagBits.DepthBufferEnabled) != 0;
if (mDepth.IsDepthBufferEnabled != enabled)
{
if (mDepth.IsDepthBufferEnabled)
{
mDepth.DisableDepthBuffer();
}
else
{
mDepth.EnableDepthBuffer();
}
}
var oldDepthWrite = (mPastDepthState.Flags & GLGraphicsPipelineFlagBits.DepthBufferWriteEnabled);
var newDepthWrite = (next.Flags & GLGraphicsPipelineFlagBits.DepthBufferWriteEnabled);
var pastDepth = mPastDepthState.DepthState;
var nextDepth = next.DepthState;
if ((oldDepthWrite & newDepthWrite) != oldDepthWrite)
{
mDepth.SetDepthMask(newDepthWrite != 0);
}
if (pastDepth.DepthBufferFunction != nextDepth.DepthBufferFunction)
{
mDepth.SetDepthBufferFunc(nextDepth.DepthBufferFunction);
}
}
private void SetupDepthSettings(IGLGraphicsPipeline pipeline)
{
var depthState = ExtractDepthState(pipeline);
if (ChangesFoundInDepth(depthState))
{
ApplyDepthChanges(depthState);
mPastDepthState = depthState;
}
}
private bool ChangesFoundInDepth(GLCmdBufferPipelineItem next)
{
var mask = GLGraphicsPipelineFlagBits.DepthBufferEnabled
| GLGraphicsPipelineFlagBits.DepthBufferWriteEnabled;
var pastFlags = mask & mPastDepthState.Flags;
var nextFlags = mask & next.Flags;
return((pastFlags != nextFlags) || (!mPastDepthState.DepthState.Equals(next.DepthState)));
}
public GLCmdBufferPipelineItem GeneratePipelineItem(IGLGraphicsPipeline pipeline)
{
GLGraphicsPipelineFlagBits flags = pipeline.Flags;
var pipelineItem = new GLCmdBufferPipelineItem {
Flags = flags,
DepthState = pipeline.DepthState,
StencilState = pipeline.StencilState,
};
return(pipelineItem);
}
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();
}