public void AddFilter(BaseFilter filter, string name = "")
{
Filters.Add(filter);
FilterNameIndex[name] = filter;
}
private FilterProgram BuildDefaultChain(Size chainInSize, Size chainOutSize, bool includeOSD, bool includeUserFilters)
{
// select user special FX shader chain
var selectedChainProperties = new Dictionary <string, object>();
Filters.RetroShaderChain selectedChain = null;
if (Global.Config.TargetDisplayFilter == 1 && ShaderChain_hq2x != null && ShaderChain_hq2x.Available)
{
selectedChain = ShaderChain_hq2x;
}
if (Global.Config.TargetDisplayFilter == 2 && ShaderChain_scanlines != null && ShaderChain_scanlines.Available)
{
selectedChain = ShaderChain_scanlines;
selectedChainProperties["uIntensity"] = 1.0f - Global.Config.TargetScanlineFilterIntensity / 256.0f;
}
if (Global.Config.TargetDisplayFilter == 3 && ShaderChain_user != null && ShaderChain_user.Available)
{
selectedChain = ShaderChain_user;
}
if (!includeUserFilters)
{
selectedChain = null;
}
Filters.BaseFilter fCoreScreenControl = CreateCoreScreenControl();
var fPresent = new Filters.FinalPresentation(chainOutSize);
var fInput = new Filters.SourceImage(chainInSize);
var fOSD = new Filters.OSD();
fOSD.RenderCallback = () =>
{
if (!includeOSD)
{
return;
}
var size = fOSD.FindInput().SurfaceFormat.Size;
Renderer.Begin(size.Width, size.Height);
var myBlitter = new MyBlitter(this)
{
ClipBounds = new Rectangle(0, 0, size.Width, size.Height)
};
Renderer.SetBlendState(GL.BlendNormal);
GlobalWin.OSD.Begin(myBlitter);
GlobalWin.OSD.DrawScreenInfo(myBlitter);
GlobalWin.OSD.DrawMessages(myBlitter);
Renderer.End();
};
var chain = new FilterProgram();
//add the first filter, encompassing output from the emulator core
chain.AddFilter(fInput, "input");
if (fCoreScreenControl != null)
{
chain.AddFilter(fCoreScreenControl, "CoreScreenControl");
}
// if a non-zero padding is required, add a filter to allow for that
// note, we have two sources of padding right now.. one can come from the VideoProvider and one from the user.
// we're combining these now and just using black, for sake of being lean, despite the discussion below:
// keep in mind, the VideoProvider design in principle might call for another color.
// we haven't really been using this very hard, but users will probably want black there (they could fill it to another color if needed tho)
var padding = CalculateCompleteContentPadding(true, true);
if (padding.Vertical != 0 || padding.Horizontal != 0)
{
// TODO - add another filter just for this, its cumbersome to use final presentation... I think. but maybe there's enough similarities to justify it.
Size size = chainInSize;
size.Width += padding.Horizontal;
size.Height += padding.Vertical;
Filters.FinalPresentation fPadding = new Filters.FinalPresentation(size);
chain.AddFilter(fPadding, "padding");
fPadding.GuiRenderer = Renderer;
fPadding.GL = GL;
fPadding.Config_PadOnly = true;
fPadding.Padding = padding;
}
//add lua layer 'emu'
AppendLuaLayer(chain, "emu");
if (Global.Config.DispPrescale != 1)
{
var fPrescale = new Filters.PrescaleFilter()
{
Scale = Global.Config.DispPrescale
};
chain.AddFilter(fPrescale, "user_prescale");
}
// add user-selected retro shader
if (selectedChain != null)
{
AppendRetroShaderChain(chain, "retroShader", selectedChain, selectedChainProperties);
}
// AutoPrescale makes no sense for a None final filter
if (Global.Config.DispAutoPrescale && Global.Config.DispFinalFilter != (int)Filters.FinalPresentation.eFilterOption.None)
{
var apf = new Filters.AutoPrescaleFilter();
chain.AddFilter(apf, "auto_prescale");
}
//choose final filter
var finalFilter = Filters.FinalPresentation.eFilterOption.None;
if (Global.Config.DispFinalFilter == 1)
{
finalFilter = Filters.FinalPresentation.eFilterOption.Bilinear;
}
if (Global.Config.DispFinalFilter == 2)
{
finalFilter = Filters.FinalPresentation.eFilterOption.Bicubic;
}
//if bicubic is selected and unavailable, don't use it. use bilinear instead I guess
if (finalFilter == Filters.FinalPresentation.eFilterOption.Bicubic)
{
if (ShaderChain_bicubic == null || !ShaderChain_bicubic.Available)
{
finalFilter = Filters.FinalPresentation.eFilterOption.Bilinear;
}
}
fPresent.FilterOption = finalFilter;
// now if bicubic is chosen, insert it
if (finalFilter == Filters.FinalPresentation.eFilterOption.Bicubic)
{
AppendRetroShaderChain(chain, "bicubic", ShaderChain_bicubic, null);
}
// add final presentation
chain.AddFilter(fPresent, "presentation");
//add lua layer 'native'
AppendLuaLayer(chain, "native");
// and OSD goes on top of that
// TODO - things break if this isn't present (the final presentation filter gets messed up when used with prescaling)
// so, always include it (we'll handle this flag in the callback to do no rendering)
//if (includeOSD)
chain.AddFilter(fOSD, "osd");
return(chain);
}