My laptop also has a 945gm so I can't test this until I get to my desktop (although glsl shaders will work on os x with a 945gm, intel only supports arb shaders in windows opengl).
The http://bpaste.net/show/13617/ is not the same because the glsl compiler will usually compile out (make inactive) all of your uniforms since you aren't referencing them in the shader. I often find this very annoying for testing. I've often had problems with arrays in glsl, and never got them to work correctly in os x. You could try using a 1D texture lookup if the arrays are the problem. I don't really understand what you are trying to do in your pixel shader, you could get rid of all of the else's and just put gl_FragColor at the end of main and it would have the same effect. Your loop just changes the final uv, so in effect you don't even need a for loop because your code will always just make the end color by using imax-1. Everything else gets overwritten. Devon On Fri, Feb 11, 2011 at 12:37 PM, amdlintuxo <amdlintu...@gmail.com> wrote: > Hi all. > > Strange sporadic screen blinking when using array uniform variables in > fragment shader. > Unfortunately i have only one HW config to test this(maybe the problem > is in my HW) > > The strange is: > The problem occurs with shader > http://bpaste.net/show/13616/ > even if i pass empty arrays into it (imax = 0), so actually shader > should do any distortion work. > > And the problem DOES NOT occur with shader > http://bpaste.net/show/13617/ > > So it has to be something in my shader, but i was thought that code > http://bpaste.net/show/13617/ is the same as (http://bpaste.net/show/ > 13616/ + if imax = 0) > But why screen blinking occurs? Actually without uniform arrays, by > passing only simple uniform shader works great. > > Full code is here: > http://bpaste.net/show/13615/ > > Could some one test the full code or provide the idea what can cause > sporadic screen blinking. > Looking forwards for you support, i have nothing left to try to > resolve this problem, struggling third day, no luck. Maybe this > blinking is my HW config problem. >
