Mali 400 don´t have anisotropic filtering?

Unity Engine
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1

Hello, I am making an Android game and in my phone “Galaxy S duos”(with an Adreno 200), the anisotropic filter works ok. But when I test the game in a Tablet With GPU Mali-400, the Anisotropic don´t works (in any aniso level).

I tested in GPU mali 400 Single Core and Quad Core, and both of them don´t have anisotropic filter.

It is a limitation of the Mali 400 or it is a Unity bug?.

Thanks in advance.

2

anisotropic filtering is not part of gles2 core api
you need GL_EXT_texture_filter_anisotropic extension.

3

Hello, Alexey

and how I can use “GL_EXT_texture_filter_anisotropic” extension in Unity?

I am very novice with Android and Open GL, and I don´t know how I must to proceed. Why it works on Adreno 200 directly?. How I can set it for Mali 400 to use it?.

Thanks in advance.

4

no, you got it all wrong
aniso filtering is not part of core api, so it is supported ONLY if gl driver have GL_EXT_texture_filter_anisotropic extension
you can check or in logcat (we dump all extensions when we init gl)
or over http://gfxbench.com
e.g. if you check GFXBench - unified graphics benchmark based on DXBenchmark (DirectX) and GLBenchmark (OpenGL ES) which is galaxy note 2 you will see that there is no GL_EXT_texture_filter_anisotropic extensions exposed, meaning no aniso filtering

5

this mean that they can add support for anisotropic filter in the Drivers if they want?, or it is a Hardware limitation (Mali 400 don´t support it)?. I did read in other forum that somebody saw a game from the market using anisotropic filter in a Mali card. And he wanted to use Anisotropic with Unity and had the same question than me.

Sorry by my english.

Regards.

6

well, i am not an ARM guy, so i cant say for sure. But if they ever have a driver with aniso support it will just work here

i would suggest to not trust so easily to random people on the internets ;-).
Anyway, if the driver supports this extension aniso will fly. You can ask over ARM forums, maybe they can give you more info about future/current availability

7

I just tested this and i can confirm that anisotropic filtering does not work on mali 400.

I am trying to create a somewhat crisp road, but i dont know how to do it now.
MipMapBias does not work either, but trilinear filtering helped a little.

Any suggestions ?

8

Thanks Alexey!!!

About Antialiasing, it is not part of gles2 core api, or it is?.

I tested it with Mali 400 some time ago and it worked very well (and with 4xAA it only have a litle impact on the framerate, it is awesome…:hushed:).

But two weeks ago I tested it on my phone and I can´t apreciate if it works, because the pixels are very litle, but it have a problem with the GUI of the game, THE GUI DISSAPEARS!. it is a know BUG? or I must to send a bug report, or Adreno don´t support it?.

Regards!.

9

first of all - even if aa is not supported it shouldnt cause gui to disappear, so bug report with repro project and device information
second - i think almost all “sane” android devices support some AA, so you shouldnt really worry (and, apart from some possible crazy bugs - fallback to no-AA should be pretty painless- just some jaginess)

10

try to not using Mipmaps. I think that it will be crisper but it will lower the performance. You must to check if it worth the change. It will look somewhat “pixelated” at far distance.

11

I tried it, but it doesnt look good either. Too crisp far away, or too blurry up close.
I think i will have to model the road stripes as polygons …

12

I am testing Antialiasing and in Mali 400, if I set AA to 8X, ANISO appears magically!! (but the framerate drops a bit)

In Adreno 200 seems to work AA at 2x,4x (at 8x I can´t apreciate it in the 4" phone screen, but the framerate don´t drop from 4x to 8x, seems to don´t apply 8x).
The problem is with AA and the GUI in Adreno 200, when I set to 2X the GUI buttons get corrupted, after it I set to 4X they come to normal state. but touching later the menus, appears black areas on the screen, and if I change the AA to Off it come to normality.

I need to make a small repro case.

Regards.

13

I did try to reproduce the bug in an new empty proyect but I can´t get the Bug here.

I deleted all that I can in my proyect and I did send the Bug Report.

Case 579683.

Regards.