fedca's Forum Posts

• • fedca
  • 
  • • Joined 6 Jul, 2017
    • 
    • 31 topics • 503 posts
  • 1

  • 3 Oct, 2023
  • Quote

  array.IndexOf(0), this works as empty array cells return null

  edit: sorry I just read you are looking for a specific collumn, my bad

• • fedca
  • 
  • • Joined 6 Jul, 2017
    • 
    • 31 topics • 503 posts
  • 5

  • 30 Sep, 2023
  • Quote

  My newest effect is a color vignette, similar to the build in vignette but it allows you to set the color plus some additional parameters to tweak.

  

  https://www.construct.net/en/make-games/addons/1114/color-vignette

• • fedca
  • 
  • • Joined 6 Jul, 2017
    • 
    • 31 topics • 503 posts
  • 1

  • 30 Sep, 2023
  • Quote

  I'm in, let me know when you organize something

• • fedca
  • 
  • • Joined 6 Jul, 2017
    • 
    • 31 topics • 503 posts
  • 1

  • 29 Sep, 2023
  • Quote

  yea that vampire survivor-esque push out solid thing you made is nice!

  I guess the build in collision cells must update when an instance moves I assume (well not the whole thing but the specific instance) instead of just every frame. Plus they also handle objects with different sizes.

  I'll check the spacial hash out you linked, definitely seems like a custom solution is the best for extreme cases.

  Still would be awesome to have access to the build in system and I assume (naively) it shouldn't be much more work for Scirra then to expose the interface.

• • fedca
  • 
  • • Joined 6 Jul, 2017
    • 
    • 31 topics • 503 posts
  • 3

  • 29 Sep, 2023
  • Quote

  All I am asking for is a scripting interface to query the collision cells, it could be something like:

  runtime.collisionCells.getInstancesInRect(x1,y1,x2,y2)

  I don't understand what you are arguing about when you yourself don't seem to know what collision cells even are:

  from a programming perspective, I'm not sure how that is possible, ha. You can't get something from nothing - not sure what other way you could start from other than an array of objects and at minimum filtering the array

• • fedca
  • 
  • • Joined 6 Jul, 2017
    • 
    • 31 topics • 503 posts
  • 3

  • 29 Sep, 2023
  • Quote

  bro why are you trying to convince me that I don't know what I am talking about, what is the purpose of this discussion?

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• • fedca
  • 
  • • Joined 6 Jul, 2017
    • 
    • 31 topics • 503 posts
  • 3

  • 28 Sep, 2023
  • Quote

  Yes, you even quoted where I described the case, any system that needs to check collision against many instances will run very badly without collision cells as they have to loop over each instance which can quickly go up to thousand and thousands of checks per tick, for example 128*128 = 16.384.

  I wrote this after I tried rewriting a system in js with the intention to increase performance, but instead I actually made performance way worse as I couldn't use collision cells. Sure I guess I could create my own system, but it feels redundant if there is already one in the engine that also already has its own overhead of being created and updated.

  I'm not sure you are aware, but behaviors and is overlapping on collision events make use of collision cells (unless you pick beforehand). It's just that js doesn't allow accessing the build in collision cells.

• • fedca
  • 
  • • Joined 6 Jul, 2017
    • 
    • 31 topics • 503 posts
  • 3

  • 28 Sep, 2023
  • Quote

  I've currently been getting into shaders and done a handful of effect for c3.

  When reading resources about shaders I often find the technique of down-sampling and then running shaders on that downsampled framebuffer and then upsample later. This seems to lead to crazy performance benefits as the amount of pixels is just that much lower.

  (example, super fast blur Dual Kawase https://www.shadertoy.com/view/3td3W8)

  I tried to apply similar techniques in c3 but that either lead to very weird results or seem outright impossible. So I wondered is this a skill issue and it's possible?

  Or if not possible I wonder if it would be feasible to extend the effects sdk to allow to read and write to frame buffers to allow for some additional shader techniques.

• • fedca
  • 
  • • Joined 6 Jul, 2017
    • 
    • 31 topics • 503 posts
  • 6

  • 27 Sep, 2023
  • Quote

  Newest Effect is a glitch Shader bsed on this Shader by user Coolok : shadertoy.com/view/4dXBW2

  download here: https://www.construct.net/en/make-games/addons/1113/glitch

• • fedca
  • 
  • • Joined 6 Jul, 2017
    • 
    • 31 topics • 503 posts
  • 1

  • 26 Sep, 2023
  • Quote

  R0J0 just casually dropping bangers

• • fedca
  • 
  • • Joined 6 Jul, 2017
    • 
    • 31 topics • 503 posts
  • 4

  • 25 Sep, 2023
  • Quote

  solution for bloom:

  this effect allows you to use bloom with a lot of control over how it looks and how much performance it cost as it allows you to use any blur you want. You can also decide how it should be blended, additive is the obvious choice but you might try other blending modes like screen.

  HOW TO USE:

  • create a mask sprite, opaque pixels apply the effect
  • add my new effect luminosityMask to the mask sprite (https://www.construct.net/en/make-games/addons/1112/luminosity-mask-bloom)
  • tweak the effect, you can see here which pixel will be affected etc.
  • add any blurs you want to the mask, for example the build in blur or my Kawase Blur
  • add a blend mode, for example Additive

  An example project is included on the addon page.

  Imo this is the best solution for Bloom in c3 currently, it'S really tweakable for an artist without needing to look at shader code and works with any blur so can be as light or heavy on performance as you want.

  
• • fedca
  • 
  • • Joined 6 Jul, 2017
    • 
    • 31 topics • 503 posts
  • 3

  • 24 Sep, 2023
  • Quote

  These are fantastic! I've added one to our project already. Thanks very much for sharing these, and I hope there's more quality effects from you in the future!

  Awesome to hear, I'm interested to see how people use these effects. :)

  Let me know if there is anything you need changed or fixed!

• • fedca
  • 
  • • Joined 6 Jul, 2017
    • 
    • 31 topics • 503 posts
  • 6

  • 23 Sep, 2023
  • Quote

  created a new effect today, the KawaseBlur (also added to the first post).

  The Kawase Blur is designed to mimic a gaussian blur at much better performance.

  It's supposed to be used with multiple passes.

  To avoid artifacts use the following kernels depending on how strong the blur needs to be

  2 pass = 0.5, 0.5

  3 pass = 0.5, 1.5, 1.5

  4 pass = 0.5, 1.5, 1.5, 2.5

  5 pass = 0.5, 1.5, 2.5, 2.5, 3.5

  7 pass = 0.5, 1.5, 2.5, 3.5, 4.5, 4.5, 5.5

  10 pass = 0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 7.5, 8.5, 9.5, 10.5

  (for example for the 4 pass blur you add KawaseBlur 4 times and the set the kernels for each effect in that order) You can also try other sequences (like 1.5, 2.5, 3.5, 4.5) but you might get artifacts.

  https://www.construct.net/en/make-games/addons/1110/kawase-blur

  example of the effect used as a background blur in my game

  
• • fedca
  • 
  • • Joined 6 Jul, 2017
    • 
    • 31 topics • 503 posts
  • 1

  • 23 Sep, 2023
  • Quote

  yea it's really weird. The thumbs up do affect the star rating, it seems like the up vote down vote ratio is remapped to 0-5.

• • fedca
  • 
  • • Joined 6 Jul, 2017
    • 
    • 31 topics • 503 posts
  • 13

  • 22 Sep, 2023
  • Quote

  I recently start to get into shaders, so created some free effects for C3 and I want to compile them here. All of the shaders support webGL and webGPU so they are future proof.

  Let me know if you have any issues with the effect, need some changes or other feedback.

  If you want to support me I'd appreciate a coffee :) https://ko-fi.com/fedecalchera

  Bloom

  Bloom solution using a luminosity mask (see addon documentation and example project)

  

  https://www.construct.net/en/make-games/addons/1112/luminosity-mask-bloom

  Kawase Blur

  Kawase Blur to mimic gaussian blur with better performance, supposed to be used with multiple passes (see addon documentation)

  

  https://www.construct.net/en/make-games/addons/1110/kawase-blur

  Goddess Rays

  Procedural animated God Rays, effect has very little performance cost. Based on a shader for Godot (godotshaders.com).

  https://www.construct.net/en/make-games/addons/1121/goddess-rays

  Glitch

  Glitch effect, base on this shader by user Coolok:

  https://www.shadertoy.com/view/4dXBW2

  https://www.construct.net/en/make-games/addons/1113/glitch

  Tint Blend

  Overlay a Color with adjustable opacity.

  

  https://www.construct.net/en/make-games/addons/1026/tint-blend

  Add Color

  Overlay a color with adjustable opacity and additive blending.

  

  https://www.construct.net/en/make-games/addons/1103/add-color

  Gradient

  Overlay a two color gradient, with adjustable gradient angle, smoothness and opacity of each color.

  

  https://www.construct.net/en/make-games/addons/1107/gradient

  Transparent Edges

  fade out a sprite from the edges, has a bunch of properties that allow for a wide variety of uses, how soft, how round, how large etc.(you can also flip the effect by choosing a larger Outer than Inner property):

  https://www.construct.net/en/make-games/addons/1123/transparent-edges

  

  Box Blur

  Two pass box blur with adjustable kernel (strength of the blur).

  

  https://www.construct.net/en/make-games/addons/1108/box-blur-horizontal

  https://www.construct.net/en/make-games/addons/1109/box-blur-vertical

  Directional Blur

  Allows you to set the angle of the blur and tweak the blurs strength and quality.

  

  https://www.construct.net/en/make-games/addons/1149/directional-blur

  Color Vignette

  Similar to the build in vignette but it allows you to set the color plus some additional parameters to tweak.

  

  https://www.construct.net/en/make-games/addons/1114/color-vignette

  BOKEH

  https://www.construct.net/en/make-games/addons/1182/bokeh

  Buttery Bokeh blur, keep samples low otherwise performance cost can get heavy.

  

  Gradient Map

  https://www.construct.net/en/make-games/addons/1189/gradient-map

  Remap the colors to a three color gradient.

  

  Overlay Color

  https://www.construct.net/en/make-games/addons/1191/overlay-color

  add a color with overlay blending.

  

  Tagged:

  • bloom
  • effect
  • shader
  • webgpu