private void BindStencilState(bool force)
{
stencilStateDirty |= force;
if (!stencilStateDirty)
{
return;
}
if (force || stencilState.Enable != boundStencilState.Enable)
{
if (stencilState.Enable)
{
GL.Enable(EnableCap.StencilTest);
GLHelper.CheckGLErrors();
}
else
{
GL.Disable(EnableCap.StencilTest);
GLHelper.CheckGLErrors();
}
boundStencilState.Enable = stencilState.Enable;
}
if (force || stencilState.Enable)
{
if (force || stencilState.WriteMask != boundStencilState.WriteMask)
{
GL.StencilMask(stencilState.WriteMask);
GLHelper.CheckGLErrors();
boundStencilState.WriteMask = stencilState.WriteMask;
}
var funcDirty = force ||
stencilState.ReferenceValue != boundStencilState.ReferenceValue ||
stencilState.ReadMask != boundStencilState.ReadMask;
if (funcDirty || stencilState.FrontFaceComparison != boundStencilState.FrontFaceComparison)
{
GL.StencilFuncSeparate(StencilFace.Front,
(StencilFunction)GLHelper.GetGLCompareFunc(stencilState.FrontFaceComparison), stencilState.ReferenceValue, stencilState.ReadMask);
GLHelper.CheckGLErrors();
boundStencilState.FrontFaceComparison = stencilState.FrontFaceComparison;
}
if (funcDirty || stencilState.BackFaceComparison != boundStencilState.BackFaceComparison)
{
GL.StencilFuncSeparate(StencilFace.Back,
(StencilFunction)GLHelper.GetGLCompareFunc(stencilState.BackFaceComparison), stencilState.ReferenceValue, stencilState.ReadMask);
GLHelper.CheckGLErrors();
boundStencilState.BackFaceComparison = stencilState.BackFaceComparison;
}
boundStencilState.ReferenceValue = stencilState.ReferenceValue;
boundStencilState.ReadMask = stencilState.ReadMask;
if (force ||
stencilState.FrontFaceFail != boundStencilState.FrontFaceFail ||
stencilState.FrontFaceDepthFail != boundStencilState.FrontFaceDepthFail ||
stencilState.FrontFacePass != boundStencilState.FrontFacePass
)
{
GL.StencilOpSeparate(StencilFace.Front,
(GLStencilOp)GLHelper.GetGLStencilOp(stencilState.FrontFaceFail),
(GLStencilOp)GLHelper.GetGLStencilOp(stencilState.FrontFaceDepthFail),
(GLStencilOp)GLHelper.GetGLStencilOp(stencilState.FrontFacePass));
GLHelper.CheckGLErrors();
boundStencilState.FrontFaceFail = stencilState.FrontFaceFail;
boundStencilState.FrontFaceDepthFail = stencilState.FrontFaceDepthFail;
boundStencilState.FrontFacePass = stencilState.FrontFacePass;
}
if (force ||
stencilState.BackFaceFail != boundStencilState.BackFaceFail ||
stencilState.BackFaceDepthFail != boundStencilState.BackFaceDepthFail ||
stencilState.BackFacePass != boundStencilState.BackFacePass
)
{
GL.StencilOpSeparate(StencilFace.Back,
(GLStencilOp)GLHelper.GetGLStencilOp(stencilState.BackFaceFail),
(GLStencilOp)GLHelper.GetGLStencilOp(stencilState.BackFaceDepthFail),
(GLStencilOp)GLHelper.GetGLStencilOp(stencilState.BackFacePass));
GLHelper.CheckGLErrors();
boundStencilState.BackFaceFail = stencilState.BackFaceFail;
boundStencilState.BackFaceDepthFail = stencilState.BackFaceDepthFail;
boundStencilState.BackFacePass = stencilState.BackFacePass;
}
}
stencilStateDirty = false;
}