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gavkar's profile
Gokhan Avkarogullari
Gokhan Avkarogullari
Gokhan Avkarogullari
@gavkar

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Gokhan Avkarogullari

@gavkar

I manage the Apple Silicon Graphics Drivers Teams at Apple. My tweets reflect my opinions, not Apple's.

Joined April 2011

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    1. ReJ  🚀 Renaldas Zioma‏ @__ReJ__ 8 Apr 2015

      On iPhone 5 PBS shader is 100% ALU bound. On iPhone 6 it is 100% bound by number of textures accessed. Just 2 generations apart.

      2 replies . 7 retweets 8 likes
    2. ReJ  🚀 Renaldas Zioma‏ @__ReJ__ 8 Apr 2015
      Replying to @__ReJ__

      and that is already with iPhone 6 running higher quality BRDF than iPhone5 - wasting more ALU cycles that comes for free. #progress

      1 reply . 2 retweets 3 likes
    3. Unai Landa‏ @unai_landa 8 Apr 2015
      Replying to @__ReJ__

      @__ReJ__ yep, very texture bound here...

      1 reply . 0 retweets 0 likes
    4. Gokhan Avkarogullari‏ @gavkar 8 Apr 2015
      Replying to @unai_landa

      @unai_landa @__ReJ__ is use of compressed textures making a difference? i.e. Texture filtering or memory bandwidth limited?

      2 replies . 0 retweets 0 likes
    5. Unai Landa‏ @unai_landa 8 Apr 2015
      Replying to @gavkar

      @gavkar @__ReJ__ LOD selection in cubemaps makes a difference Is slower) and modifying the texture gradients too.

      2 replies . 0 retweets 0 likes
    6. Unai Landa‏ @unai_landa 8 Apr 2015
      Replying to @unai_landa

      @gavkar @__ReJ__ all but rendertargets is compressed usually. Not being able to "reinterpret" a render-target also wastes a bit of BW

      2 replies . 0 retweets 0 likes
      Gokhan Avkarogullari‏ @gavkar 8 Apr 2015
      Replying to @unai_landa

      @unai_landa @__ReJ__ thanks. Valuable information.

      7:15 am - 8 Apr 2015
      0 replies . 0 retweets 0 likes

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