fix(ios): pin voxel render target scale & fix shadows

lib/OverworldBattle.lua

@@ -287,6 +287,10 @@ end
 -- not nest.
 local session = nil
 
+local function isIOS()
+  return love.system and love.system.getOS and love.system.getOS() == "iOS"
+end
+
 local function game()
   return require("src.core.Game")
 end
@@ -484,11 +488,15 @@ function OverworldBattle.update(dt)
     -- reason the scene is: it binds a canvas of its own. After the frost, so
     -- the glass is frosted from the world alone and never from the glyphs
     -- about to sit on it.
-    local okHud, up = pcall(OverworldBattle.snapHUDs, session.battle, shot)
+    local ios = isIOS()
+    local okHud, up = false, false
+    if not ios then
+      okHud, up = pcall(OverworldBattle.snapHUDs, session.battle, shot)
+    end
     session.snapped = (okHud and up) and true or false
     -- once per battle, not once per frame: a driver that cannot do this cannot
     -- do it sixty times a second either, and the fallback is silent and fine
-    if not okHud and not session.hudWarned then
+    if not ios and not okHud and not session.hudWarned then
       session.hudWarned = true
       V.mod.log:warn("overworld battle HUD snap failed: %s -- the HUDs draw "
                      .. "in the battle frame this battle", tostring(up))
@@ -928,6 +936,7 @@ function OverworldBattle.install()
   local innerText = BattleState.drawTextArea
   function BattleState:drawTextArea()
     if not self.dramaticShapeShot then return innerText(self) end
+    if isIOS() then return innerText(self) end
     local battle = self
     if not self.dramaticShapeDark then return withoutBoxFill(battle, innerText) end
     BattleHud.flipGlyphs(BattleScene.GB_W, BattleScene.GB_H, function()
@@ -1146,6 +1155,17 @@ function OverworldBattle.drawHudPanels(battle)
   local shot = battle.dramaticShapeShot
   battle.dramaticShapeDark = nil
   if not shot then return end
+  if isIOS() then
+    local slide = (battle.introSlide or 0) * 4
+    local enemy, player = OverworldBattle.hudLive(battle, slide)
+    local rect = OverworldBattle.HUD_RECT
+    love.graphics.setColor(1, 1, 1, 0.84)
+    if enemy then love.graphics.rectangle("fill", rect.enemy[1], rect.enemy[2], rect.enemy[3], rect.enemy[4]) end
+    if player then love.graphics.rectangle("fill", rect.player[1], rect.player[2], rect.player[3], rect.player[4]) end
+    love.graphics.setColor(1, 1, 1, 1)
+    battle.dramaticShapeDark = nil
+    return
+  end
   if snapped() then
     battle.dramaticShapeDark = session and session.dark or nil
     return

lib/PixelCanvas.lua

@@ -0,0 +1,9 @@
+local V = ...
+
+local PixelCanvas = {}
+
+function PixelCanvas.new(w, h)
+  return pcall(love.graphics.newCanvas, w, h, { dpiscale = 1 })
+end
+
+return PixelCanvas

lib/ShadowMap.lua

@@ -186,7 +186,7 @@ end
 local function getCanvas(res)
   if canvas == false then return nil end
   if canvas and canvasRes == res then return canvas end
-  local ok, c = pcall(love.graphics.newCanvas, res, res)
+  local ok, c = V.require("PixelCanvas").new(res, res)
   if not (ok and c) then
     canvas = false
     return nil
@@ -221,6 +221,9 @@ end
 -- where the canvas cannot be made -- VoxelScene then keeps the flat decal
 -- shadows, which need nothing but a quad.
 function ShadowMap.available()
+  if love.system and love.system.getOS and love.system.getOS() == "iOS" then
+    return false
+  end
   if not (love.graphics and love.graphics.newCanvas
           and love.graphics.setDepthMode) then
     return false

lib/TiltShift.lua

@@ -25,6 +25,7 @@
 -- failure -- headless, no shader support) apply() hands the canvas back
 -- untouched, so every other path is byte-for-byte what it always was.
 
+local V = ...
 local TiltShift = {}
 
 TiltShift.level = 0
@@ -85,9 +86,10 @@ end
 
 local function getCanvases(w, h)
   if not ping or cw ~= w or ch ~= h then
-    local ok, a = pcall(love.graphics.newCanvas, w, h)
+    local PixelCanvas = V.require("PixelCanvas")
+    local ok, a = PixelCanvas.new(w, h)
     if not ok then return nil end
-    local okB, b = pcall(love.graphics.newCanvas, w, h)
+    local okB, b = PixelCanvas.new(w, h)
     if not okB then return nil end
     -- the gaussian's fractional tap offsets need linear filtering
     a:setFilter("linear", "linear")

lib/Voxel3D.lua

@@ -33,6 +33,7 @@ local WorldCurve = V.require("WorldCurve")
 local Sky = V.require("Sky")
 local DayNight = V.require("DayNight")
 local GlassMask = V.require("GlassMask")
+local PixelCanvas = V.require("PixelCanvas")
 
 local Voxel3D = {}
 
@@ -640,7 +641,7 @@ function Voxel3D.beginScene(w, h, cx, cy, vw, vh, sky, slot)
   local name = slot or "world"
   local slotHeld = slots[name]
   if not (slotHeld and slotHeld.w == w and slotHeld.h == h) then
-    local ok, c = pcall(love.graphics.newCanvas, w, h)
+    local ok, c = PixelCanvas.new(w, h)
     if not ok then return false end
     c:setFilter("nearest", "nearest")
     if slotHeld then releaseSlot(slotHeld) end