diff --git a/src/figdraw/common/fontglyphs.nim b/src/figdraw/common/fontglyphs.nim
index 0fd47db..bb8f829 100644
--- a/src/figdraw/common/fontglyphs.nim
+++ b/src/figdraw/common/fontglyphs.nim
@@ -72,54 +72,64 @@ proc hash*(
   let variant = clampGlyphVariantSubpixelStep(subpixelVariant)
   result = hash((2344, glyph.fontId, glyph.rune, lcdFiltering, variant))
 
-proc generateGlyph*(glyph: GlyphPosition, lcdFiltering = false, subpixelVariant = 0) =
+proc generateGlyph*(
+    glyph: GlyphPosition,
+    lcdFiltering = false,
+    subpixelVariant = 0,
+    force = false,
+    upload = true,
+): Image {.discardable.} =
   if unicode.isWhiteSpace(glyph.rune):
-    return
+    return nil
 
   let
     variant = clampGlyphVariantSubpixelStep(subpixelVariant)
     hashFill = glyph.hash(lcdFiltering = lcdFiltering, subpixelVariant = variant)
 
-  if not hasImage(hashFill.ImageId):
-    let
-      fontId = glyph.fontId
-      font = getPixieFont(fontId)
-
-    var
-      text = $glyph.rune
-      arrangement = pixie.typeset(
-        @[newSpan(text, font)],
-        bounds = glyph.rect.wh.scaled(),
-        hAlign = CenterAlign,
-        vAlign = TopAlign,
-        wrap = false,
-      )
-    if variant > 0:
-      let subpixelOffset = variant.float32 / glyphVariantSubpixelSteps.float32
-      for i in 0 ..< arrangement.positions.len:
-        arrangement.positions[i].x += subpixelOffset
-
-    let snappedBounds = arrangement.computeBounds().snapToPixels()
-
-    let
-      lh = font.defaultLineHeight()
-      bounds = rect(0, 0, scaled(snappedBounds.w + snappedBounds.x), scaled(lh))
-
-    if bounds.w == 0 or bounds.h == 0:
-      error "GEN IMG: ", rune = $glyph.rune, wh = repr wh, snapped = repr snappedBounds
-      return
-
-    try:
-      font.paint = parseHex"FFFFFF"
-      var image = newImage(bounds.w.int, bounds.h.int)
-      image.fillText(arrangement)
-      if lcdFiltering:
-        image.applyLcdFilter()
-
-      # put into cache
+  if (not force) and hasImage(hashFill.ImageId):
+    return nil
+
+  let
+    fontId = glyph.fontId
+    font = getPixieFont(fontId)
+
+  var
+    text = $glyph.rune
+    arrangement = pixie.typeset(
+      @[newSpan(text, font)],
+      bounds = glyph.rect.wh.scaled(),
+      hAlign = CenterAlign,
+      vAlign = TopAlign,
+      wrap = false,
+    )
+  if variant > 0:
+    let subpixelOffset = variant.float32 / glyphVariantSubpixelSteps.float32
+    for i in 0 ..< arrangement.positions.len:
+      arrangement.positions[i].x += subpixelOffset
+
+  let snappedBounds = arrangement.computeBounds().snapToPixels()
+
+  let
+    lh = font.defaultLineHeight()
+    bounds = rect(0, 0, scaled(snappedBounds.w + snappedBounds.x), scaled(lh))
+
+  if bounds.w == 0 or bounds.h == 0:
+    debug "GEN IMG: ", rune = $glyph.rune, wh = repr wh, snapped = repr snappedBounds
+    return nil
+
+  try:
+    font.paint = parseHex"FFFFFF"
+    var image = newImage(bounds.w.int, bounds.h.int)
+    image.fillText(arrangement)
+    if lcdFiltering:
+      image.applyLcdFilter()
+
+    # put into cache
+    if upload:
       loadImage(hashFill.ImageId, image)
-    except PixieError:
-      discard
+    return image
+  except PixieError:
+    return nil
 
 iterator glyphs*(arrangement: GlyphArrangement): GlyphPosition =
   var idx = 0
diff --git a/src/figdraw/common/imgutils.nim b/src/figdraw/common/imgutils.nim
index 35d7eec..8941d24 100644
--- a/src/figdraw/common/imgutils.nim
+++ b/src/figdraw/common/imgutils.nim
@@ -105,4 +105,4 @@ proc loadImage*(filePath: string): ImageId =
 
 proc loadImage*(id: ImageId, image: Image) =
   var imgObj = ImgObj(id: id, kind: PixieImg, pimg: image)
-  sendImageCached(imgObj)
+  sendImage(imgObj)
diff --git a/src/figdraw/figrender.nim b/src/figdraw/figrender.nim
index cbe75b6..24f31ab 100644
--- a/src/figdraw/figrender.nim
+++ b/src/figdraw/figrender.nim
@@ -343,13 +343,17 @@ proc renderText(ctx: BackendContext, node: Fig) {.forbids: [AppMainThreadEff].}
 
     ctx.setTextSubpixelShift(subpixelShift)
     if glyphId notin ctx.entries:
-      glyph.generateGlyph(
-        lcdFiltering = lcdFiltering, subpixelVariant = subpixelVariant
+      let img = glyph.generateGlyph(lcdFiltering = lcdFiltering,
+                                    subpixelVariant = subpixelVariant,
+                                    force = true,
+                                    upload = false,
       )
-      warn "missing glyph image in context",
-        glyphId = glyphId, glyphRune = $glyph.rune, glyphRuneRepr = repr(glyph.rune)
-      ctx.setTextSubpixelShift(0.0'f32)
-      continue
+      ctx.putImage(glyphId, img)
+      if glyphId in ctx.entries:
+        debug "missing glyph image in context",
+          glyphId = glyphId, glyphRune = $glyph.rune, glyphRuneRepr = repr(glyph.rune)
+        ctx.setTextSubpixelShift(0.0'f32)
+        continue
 
     var drawPos = glyphPos
     if invertText:
diff --git a/src/figdraw/windowing/siwinshim.nim b/src/figdraw/windowing/siwinshim.nim
index 59d3424..ff86b2f 100644
--- a/src/figdraw/windowing/siwinshim.nim
+++ b/src/figdraw/windowing/siwinshim.nim
@@ -99,28 +99,72 @@ proc siwinWindowTitle*[BackendState](
     "figdraw: " & backend & " + " & suffix
 
 proc newSiwinWindow*(
-    size: IVec2, fullscreen = false, title = "FigDraw", vsync = true, msaa = 0'i32
+    size: IVec2,
+    fullscreen = false,
+    title = "FigDraw",
+    vsync = true,
+    msaa = 0'i32,
+    resizable = true,
+    frameless = false,
+    transparent = false,
 ): Window =
   let forceOpenGl = runtimeForceOpenGlRequested()
   let window =
     when UseMetalBackend and not NeedSiwinOpenGLContext:
       when defined(macosx):
-        newMetalWindowCocoa(size = size, title = title)
+        newMetalWindowCocoa(
+          size = size,
+          title = title,
+          resizable = resizable,
+          frameless = frameless,
+          transparent = transparent,
+        )
       else:
         {.error: "siwinshim: Metal backend requires macOS".}
     else:
       when defined(macosx):
-        newOpenglWindowCocoa(size = size, title = title, vsync = vsync, msaa = msaa)
+        newOpenglWindowCocoa(
+          size = size,
+          title = title,
+          vsync = vsync,
+          msaa = msaa,
+          resizable = resizable,
+          frameless = frameless,
+          transparent = transparent,
+        )
       else:
         let globals = sharedSiwinGlobals()
         when UseVulkanBackend:
           if forceOpenGl:
-            newOpenglWindow(globals, size = size, title = title, vsync = vsync)
+            newOpenglWindow(
+              globals,
+              size = size,
+              title = title,
+              vsync = vsync,
+              resizable = resizable,
+              frameless = frameless,
+              transparent = transparent,
+            )
           else:
             # Use a non-GL window for Vulkan so siwin's GL swap path does not flicker.
-            newSoftwareRenderingWindow(globals, size = size, title = title)
+            newSoftwareRenderingWindow(
+              globals,
+              size = size,
+              title = title,
+              resizable = resizable,
+              frameless = frameless,
+              transparent = transparent,
+            )
         else:
-          newOpenglWindow(globals, size = size, title = title, vsync = vsync)
+          newOpenglWindow(
+            globals,
+            size = size,
+            title = title,
+            vsync = vsync,
+            resizable = resizable,
+            frameless = frameless,
+            transparent = transparent,
+          )
   when NeedSiwinOpenGLContext:
     when UseVulkanBackend:
       if forceOpenGl:
@@ -140,6 +184,9 @@ proc newSiwinWindow*(
     title = "FigDraw",
     vsync = true,
     msaa = 0'i32,
+    resizable = true,
+    frameless = false,
+    transparent = false,
 ): Window =
   ## Compatibility overload. Prefer creating a window first, then renderer.
   let forceOpenGl = runtimeForceOpenGlRequested() or renderer.forceOpenGlByEnv()
@@ -173,7 +220,14 @@ proc newSiwinWindow*(
 
   discard renderer
   result = newSiwinWindow(
-    size = size, fullscreen = fullscreen, title = title, vsync = vsync, msaa = msaa
+    size = size,
+    fullscreen = fullscreen,
+    title = title,
+    vsync = vsync,
+    msaa = msaa,
+    resizable = resizable,
+    frameless = frameless,
+    transparent = transparent,
   )
 
 proc backingSize*(window: Window): IVec2 =