masks fuckery

lua/pixelui/libraries/cl_masks.lua

@@ -0,0 +1,108 @@
+---
+--- Melon's Masks
+--- https://github.com/melonstuff/melonsmasks/
+--- Licensed under MIT
+---
+
+PIXEL.Masks = {}
+
+PIXEL.Masks.Src = {}
+PIXEL.Masks.Dest   = {}
+
+PIXEL.Masks.Src.RT = GetRenderTargetEx("PIXEL_Masks_Src", ScrW(), ScrH(), RT_SIZE_NO_CHANGE, MATERIAL_RT_DEPTH_SEPARATE, bit.bor(1, 256), 0, IMAGE_FORMAT_BGRA8888)
+PIXEL.Masks.Dest.RT = GetRenderTargetEx("PIXEL_Masks_Dest", ScrW(), ScrH(), RT_SIZE_NO_CHANGE, MATERIAL_RT_DEPTH_SEPARATE, bit.bor(1, 256), 0, IMAGE_FORMAT_BGRA8888)
+
+PIXEL.Masks.Src.Mat = CreateMaterial("PIXEL_Masks_Src", "UnlitGeneric", {
+    ["$basetexture"] = PIXEL.Masks.Src.RT:GetName(),
+    ["$translucent"] = "1",
+    ["$vertexalpha"] = "1",
+    ["$vertexcolor"] = "1",
+})
+PIXEL.Masks.Dest.Mat = CreateMaterial("PIXEL_Masks_Dest", "UnlitGeneric", {
+    ["$basetexture"] = PIXEL.Masks.Dest.RT:GetName(),
+    ["$translucent"] = "1",
+    ["$vertexalpha"] = "1",
+    ["$vertexcolor"] = "1",
+})
+
+PIXEL.Masks.KIND_CUT = {BLEND_ZERO, BLEND_SRC_ALPHA, BLENDFUNC_ADD}
+PIXEL.Masks.KIND_STAMP = {BLEND_ZERO, BLEND_ONE_MINUS_SRC_ALPHA, BLENDFUNC_ADD}
+
+local camStart2D = cam.Start2D
+local camEnd2D = cam.End2D
+local pushRenderTarget = render.PushRenderTarget
+local popRenderTarget = render.PopRenderTarget
+local renderClear = render.Clear
+local renderOverrideBlend = render.OverrideBlend
+local setDrawColor = surface.SetDrawColor
+local setMaterial = surface.SetMaterial
+local drawTexturedRect = surface.DrawTexturedRect
+
+function PIXEL.Masks.Start()
+    render.PushRenderTarget(PIXEL.Masks.Dest.RT)
+    render.Clear(0, 0, 0, 0, true, true)
+
+    camStart2D()
+end
+
+function PIXEL.Masks.Source()
+    camEnd2D()
+
+    popRenderTarget()
+    pushRenderTarget(PIXEL.Masks.Src.RT)
+    renderClear(0, 0, 0, 0, true, true)
+
+    camStart2D()
+end
+
+function PIXEL.Masks.And(kind)
+    camEnd2D()
+
+    popRenderTarget()
+    pushRenderTarget(PIXEL.Masks.Dest.RT)
+
+    camStart2D()
+
+    renderOverrideBlend(true, kind[1], kind[2], kind[3])
+
+    setDrawColor(255, 255, 255)
+    setMaterial(PIXEL.Masks.Src.Mat)
+    drawTexturedRect(0, 0, ScrW(), ScrH())
+
+    renderOverrideBlend(false)
+
+    PIXEL.Masks.Source()
+end
+function PIXEL.Masks.End(kind)
+    kind = kind or PIXEL.Masks.KIND_CUT
+
+    camEnd2D()
+
+    popRenderTarget()
+    pushRenderTarget(PIXEL.Masks.Dest.RT)
+
+    camStart2D()
+        renderOverrideBlend(true, kind[1], kind[2], kind[3])
+
+        setDrawColor(255, 255, 255)
+        setMaterial(PIXEL.Masks.Src.Mat)
+        drawTexturedRect(0, 0, ScrW(), ScrH())
+
+        renderOverrideBlend(false)
+    camEnd2D()
+
+    popRenderTarget()
+
+    setDrawColor(255, 255, 255)
+    setMaterial(PIXEL.Masks.Dest.Mat)
+    drawTexturedRect(0, 0, ScrW(), ScrH())
+end
+
+hook.Add("HUDPaint", "Test", function()
+    PIXEL.Masks.Start()
+        PIXEL.DrawImage(100, 100, 1000, 1000, "https://i.imgur.com/abcde.jpg", color_white)
+    PIXEL.Masks.Source()
+        PIXEL.DrawFullRoundedBoxEx(8, 100, 100, 1000, 1000, Color(255, 255, 255), true, true, true, true)
+
+    PIXEL.Masks.End()
+end)