RenderTarget Export Issue

antix

I am trying to export some images. I have a Spine model that I am animating and then at set intervals I draw this model to a RenderTarget which I then save as a png file. Whilst this does work, there are two issues I am experiencing with it...

1. The image seen in the Gideros Player is darker than the actual source art.
2. The exported RenderTarget has transparent areas where you can see through the model.

These are shown in the following image...
You can see that in the Gideros Player, none of the background shows through the model, but in the exported RenderTarget it does. You can also see the original art is much brighter than the one in the other two images.

So can anyone explain why these things are happening?

Yan

1) What is sprite extension ?
2) Show us the render code

antix

@Yan, sprite extension?
This is the main.lua code I have...

application:setBackgroundColor(0xff0000) application:setFps(60)   local spine = require "spine-gideros.spine"   local json = spine.SkeletonJson.new() json.scale = 1 local assetFolder = "data2"   local skeletonData = json:readSkeletonDataFile(assetFolder .. "/survivor.json")   local skeleton = spine.Skeleton.new(skeletonData)   function skeleton:createImage (attachment) local image = Bitmap.new(Texture.new(assetFolder .. "/" .. attachment.name .. ".png")) image:setAnchorPoint(0.5, 0.5) return image end   local canvasSize = 256   skeleton.x = canvasSize * 0.5 skeleton.y = canvasSize * 0.5 skeleton.flipX = false skeleton.flipY = false skeleton.debug = false -- Omit or set to false to not draw debug lines on top of the images. skeleton:setToSetupPose()   skeleton:setPosition(skeleton.x, skeleton.y) skeleton:setRotation(0)   local stateData = spine.AnimationStateData.new(skeletonData) local animationName = "move_rifle"     local state = spine.AnimationState.new(stateData) state:addAnimationByName(0, animationName, true, 0)   stage:addChild(skeleton)   local canvas = RenderTarget.new(canvasSize, canvasSize)   local lastTime = 0 local animationTime = 0   local capturing = true local captureDelay = 1 local captureCount = 15 local frameNumber = 0   stage:addEventListener("enterFrame", function (event)   local dt = event.deltaTime   -- Compute time in seconds since last frame. local currentTime = event.time -- / 1000 local delta = currentTime - lastTime   lastTime = currentTime   state:update(delta * 0.5) -- Accumulate time and pose skeleton using animation. state:apply(skeleton) skeleton:updateWorldTransform()   if capturing then local delay = captureDelay - 1 if delay == 0 then delay = 4   local fileName = "|D|survivor-" .. animationName .. "_" .. frameNumber.. ".png" -- capture canvas:clear(0, 0) canvas:draw(skeleton) canvas:save(fileName, 0, 0, 256, 256)   print(fileName .. " saved") frameNumber = frameNumber + 1   local count = captureCount count = count - 1 if count == 0 then capturing = false end captureCount = count end captureDelay = delay end end)

pie

@antix I can't be sure without seeing the single images of pieces, but the lines between the pieces of your actor seems to be coming from antialias filter: I had a similar issue some time ago. I think it may be related to pixel translucency/alpha value. I never investigated that..
Have you tried exporting the images without antialias and enable antialias in gideros on texturePack and/or on the rendertarget? it worked for me

antix

@pie, okay so maybe set filter = true on the RenderTarget? I didn't think of that. I tried that but the result is the same.

This really is strange because it is ONLY when I am drawing to and saving the RenderTarget that I'm having any issues at all.

I think I might just flag this and buy Spine.

pie

It comes from rendertarget for me too, but only if I use antialiased source images. My guess (i don't have knowledge about this) is that rendertarget messes up on translucent pixels (which are usually added by antialias filter).
If I use crispy edge source images (no translucent pixel at all - each pixel is 100% transparent or 100% coloured) all is well.