If data was already extracted somewhere, then use this directory as preferred path. This is to avoid a situation that we have data extracted in two different places after STK upgrade.
- arrow size now depends on screen size, so that it's now easier to click it on high resolutions
- it's additionally scaled on Android for easier usage
The force legacy device graphics restriction is needed for ironlake graphics cards. But newer generations in pentium/celeron processors also are named just "Intel(R) HD Graphics" without any number.
The newest drivers for ironlake graphics card is 8.15 and it's unlikely that it will get an update. So assume that all drivers older than 9.x are ironlake generation or that are too old to run STK anyway.
This fixes errors for Intel HD4000 on Windows.
My understending of this issue is following:
- a shader assigned two textures, i.e. texture1 = sampler1, texture2=sampler2
- then next shader (i.e. importance sampling specular) assigned two textures: texture1=sampler1, texture2=without_sampler
- when we executed setTextureUnits, the glBindSampler function wasn't called at all, so the drivers were trying to use combination texture2=sampler2, even though the sampler2 was prepared for different texture and most likely was already deleted.
We can just always call the glBindSampler function, so that if texture doesn't have a sampler, it will execute it with sampler_id=0 param, which is practically an "unbind" function.
It's a bit ugly solution because we should handle it properly in one place and not add another sRGB correction... But it's already working solution and it doesn't affect the OpenGL renderer, so we can use it until better fix will be done.
Now the GLES renderer looks almost the same as the original OpenGL 3.x one :)
