Jump to content

Lighting enhancements and fixes in Leadwerks 3



After a wild week at GDC 2013, it's nice to be back doing what I do best...writing code!


A new build of Leadwerks 3 is now available. We've added light vector maps so that lightmapped surfaces can display normal mapping effects. Lightmapped materials with normal maps should use the texture "Common/lightvectormap.tex" in slot 4. (If you create a new lightmapped material, this will be done automatically.)

Screen Shot 2013-04-08 at 4.18.55 PM.png


This technique works by calculating the average light vector that influences each luxel in the lightmap. Each vector is weighted by the light's intensity and range to get an overall vector representing the direction most light is coming from. The light vectors are encoded in a secondary light map that looks like this:

Screen Shot 2013-04-08 at 4.24.05 PM.png


This effect will even work with specular reflection, as seen in this totally over-the-top screenshot:



We also made about a dozen small fixes to the engine and editor. For more detail on recent issues resolved, visit the bug reports forum. Like any new software, we've had some teething problems, but it's pretty easy to resolve those issues as they arise. Bugs can be fixed as they are identified, but bad design is forever. Fortunately, I think we've got a great design and a good and stable development system.


Recommended Comments

Hi looks good but I dont seem to have a lightvectormap.tex? Anyone else, there is a normal.tex?


Note this was using an exsiting project, a new project is fine. I seem to have alot of trouble with trying to use new updates on exsiting projects after updates.



Share this comment

Link to comment

It's located in "Leadwerks\Editor\Templates\Common\Materials\Common\lightvectormap.tex"

Share this comment

Link to comment

What we might be able to do is add an "Update project" feature that would copy over only the files that have changed since you created your project.

Share this comment

Link to comment

The update looks really great. I can't see any lightvectormap.tex though. I see normal.tex, Lightmap.tex and lightvectormap.png, but no lightvectormap.tex


Edit: physics are much improved in this build!

Share this comment

Link to comment

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Add a comment...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Blog Entries

    • By Josh in Josh's Dev Blog 0
      I'm back from I/ITSEC. This conference is basically like the military's version of GDC. VR applications built with Leadwerks took up about half of Northrop Grumman's booth. There were many interesting discussions about new technology and I received a very warm reception. I feel very positive about our new technology going forward.

      I am currently reworking the text field widget script to work with our persistent 2D objects. This is long and boring but needs to be done. Not much else to say right now.
    • By Josh in Josh's Dev Blog 4
      Here are some screenshots showing more complex interface items scaled at different resolutions. First, here is the interface at 100% scaling:

      And here is the same interface at the same screen resolution, with the DPI scaling turned up to 150%:

      The code to control this is sort of complex, and I don't care. GUI resolution independence is a complicated thing, so the goal should be to create a system that does what it is supposed to do reliably, not to make complicated things simpler at the expense of functionality.
      function widget:Draw(x,y,width,height) local scale = self.gui:GetScale() self.primitives[1].size = iVec2(self.size.x, self.size.y - self.tabsize.y * scale) self.primitives[2].size = iVec2(self.size.x, self.size.y - self.tabsize.y * scale) --Tabs local n local tabpos = 0 for n = 1, #self.items do local tw = self:TabWidth(n) * scale if n * 3 > #self.primitives - 2 then self:AddRect(iVec2(tabpos,0), iVec2(tw, self.tabsize.y * scale), self.bordercolor, false, self.itemcornerradius * scale) self:AddRect(iVec2(tabpos+1,1), iVec2(tw, self.tabsize.y * scale) - iVec2(2 * scale,-1 * scale), self.backgroundcolor, false, self.itemcornerradius * scale) self:AddTextRect(self.items[n].text, iVec2(tabpos,0), iVec2(tw, self.tabsize.y*scale), self.textcolor, TEXT_CENTER + TEXT_MIDDLE) end if self:SelectedItem() == n then self.primitives[2 + (n - 1) * 3 + 1].position = iVec2(tabpos, 0) self.primitives[2 + (n - 1) * 3 + 1].size = iVec2(tw, self.tabsize.y * scale) + iVec2(0,2) self.primitives[2 + (n - 1) * 3 + 2].position = iVec2(tabpos + 1, 1) self.primitives[2 + (n - 1) * 3 + 2].color = self.selectedtabcolor self.primitives[2 + (n - 1) * 3 + 2].size = iVec2(tw, self.tabsize.y * scale) - iVec2(2,-1) self.primitives[2 + (n - 1) * 3 + 3].color = self.hoveredtextcolor self.primitives[2 + (n - 1) * 3 + 1].position = iVec2(tabpos,0) self.primitives[2 + (n - 1) * 3 + 2].position = iVec2(tabpos + 1, 1) self.primitives[2 + (n - 1) * 3 + 3].position = iVec2(tabpos,0) else self.primitives[2 + (n - 1) * 3 + 1].size = iVec2(tw, self.tabsize.y * scale) self.primitives[2 + (n - 1) * 3 + 2].color = self.tabcolor self.primitives[2 + (n - 1) * 3 + 2].size = iVec2(tw, self.tabsize.y * scale) - iVec2(2,2) if n == self.hovereditem then self.primitives[2 + (n - 1) * 3 + 3].color = self.hoveredtextcolor else self.primitives[2 + (n - 1) * 3 + 3].color = self.textcolor end self.primitives[2 + (n - 1) * 3 + 1].position = iVec2(tabpos,2) self.primitives[2 + (n - 1) * 3 + 2].position = iVec2(tabpos + 1, 3) self.primitives[2 + (n - 1) * 3 + 3].position = iVec2(tabpos,2) end self.primitives[2 + (n - 1) * 3 + 3].text = self.items[n].text tabpos = tabpos + tw - 2 end end  
    • By 💎Yue💎 in Dev Log 5
      The prototype of a four-wheeled vehicle is completed, where the third person player can get on and off the vehicle by pressing the E key.  To move the vehicle either forward or backward, is done with the keys W, and the key S, to brake with the space key.  And the principle is the same as when driving the character, a third person camera goes behind the car orbiting 360 degrees.

      I don't think the vehicle is that bad, but I'm absolutely sure it can be improved.  The idea is that this explorer works with batteries, which eventually run out during the night when there is no sunlight.
      Translated with www.DeepL.com/Translator
      Mechanics of the game.
      I'm going to focus on the mechanics of the game, establish starting point (Landing area), after the orbiter accident on Mars where all your companions died, now, to survive, you will have to repair your suit, oxygen runs out, good luck.  This involves replacing the oxygen condenser that is failing and the suit is stuck.

      On the ground and performance.
      The rocks, the terrain and the vehicle kill the SPF, but there is a solution, and everything is related to the chassis of the vehicle. That is to say that if I put a simple collision bucket for the vehicle, the yield recovers, something that does not happen if I put a collider of precise calculation for the car. This has the advantage of better performance but is not very accurate, especially when the car crashes with an object in front, because the horn of the car has no collision. And the solution to this, is to put a sliding joint, as was done with the area in which the player climbs the car and descends from it.

      On the rocks, I am trying to make them with the slightest polygons and the most distant from each other. 
      Obviously on Mars I can not create canyons, high mountains, is because the terrain does not produce shadows on itself, that's why the terrain tries to be as flat as possible, simulating a desert with dunes. 

      That's all for now.
  • Create New...