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Jan
4
comment Can someone explain to me how setting shader parameters aren't a bottleneck?
While the answer is valid, the question and even a part of your answer contain an error: "Setting shader parameters is a bottleneck" - the subject here is the gerund "setting" that has a noun role and is the subject of that sentence, therefore it's singular :). Just your friendly grammar nazi here.
Jan
2
reviewed Approve what is the very last element of a 4x4 transformation matrix for?
Jan
2
comment How to implement this kind of ripples with a GLSL fragment shader?
Great effort! +1
Jan
2
comment How to implement this kind of ripples with a GLSL fragment shader?
This is no complete answer, but a series of hints: you need an uniform to "animate" the effect - i.e. a time-like variable. Using that time value, you can shift the uv.xy with a (sin(time),cos(time)) offset vector. Of course, you must figure out the amplitudes of the sine and cosine offsets. I'd start with just offsetting the uv.y first and see how I can adjust the effect further.
Dec
23
comment Creating a glitch effect similar to Watch Dogs
@rootlocus well, my bad, I didn't read the whole question carefully , sorry :(. Yet, it's quite difficult to accomplish the whole range of WD glitches the user may be after. Nevertheless, asking questions is the key to progress. Even bad questions need to be answered - since the OP is making a game, this effect pipeline alone could be a task for a month or so working full-time on it. Cheers!
Dec
23
comment Creating a glitch effect similar to Watch Dogs
It most probably can be achieved by rendering the image to a texture and then bending your brain to come up with the shader processing pipeline to achieve it. The real question is: what would you use it for? It looks more in the lines of a demo-scene project than a skill a game programmer should have. Of course, doesn't hurt to try it. An educated guess tells me that WD achieved that by playing Flash movies instead of using sophisticated shaders as you intend to. So, if a AAA doesn't do it, why would you?
Dec
18
reviewed Approve Why does adding LIBGDX “fadeIn” action to a table in a group make the whole stage fade in?
Nov
24
awarded  Popular Question
Oct
30
comment Why is Euler integration sometimes preferred over RK4 even if RK4 is more accurate?
I second @OriginalDaemon in seeing this question as a close duplicate of the Pros and cons of different integrators question. The only difference is justifying Catto's choice, which can only be inferred by carefully reading his posted material (one google search away :) ).
Oct
30
comment Why is Euler integration sometimes preferred over RK4 even if RK4 is more accurate?
I updated my answer to include a brief explanation about what the main properties of different integration strategies are (phase space area conservation = symplecticity = energy preserving and *implicit = unconditionally stable due to "cautious" update steps that result in both energy loss or undershooting the exact solution on the phase diagram plot orbit).
Oct
30
revised Why is Euler integration sometimes preferred over RK4 even if RK4 is more accurate?
added recommended reading
Oct
30
revised Why is Euler integration sometimes preferred over RK4 even if RK4 is more accurate?
phase diagram explanation
Oct
30
revised Why is Euler integration sometimes preferred over RK4 even if RK4 is more accurate?
phase diagram explanation
Oct
30
answered Why is Euler integration sometimes preferred over RK4 even if RK4 is more accurate?
Oct
15
reviewed Edit List of 3 letter English words to disallow from entry for public kids game
Oct
15
revised List of 3 letter English words to disallow from entry for public kids game
Phrasing and new tags
Oct
6
reviewed Approve Where does my .sav file default to in XNA 4.0 when using the StorageDevice class?
Oct
6
reviewed Approve How To: Java Game to Steam Greenlight
Oct
6
reviewed Approve Events and objects being skipped in GameMaker
Oct
6
reviewed Approve stencil shadows - doom 3 engine - precision errors - shadow cracks - why?