Fast mobile shaders or rather Mobile! Fast!

Tools: iOS + PowerVR•iOS: Unity’s internal profiler• GPU time for the whole scene•Apple’s Instruments / Detective• How busy is GPU in %•PowerVR’s PVRUniSCo shaderanalyzer• Take with a grain of salt• No SGX543 profilePowerVR is tile based deferred renderer, so it’s impossible to get GPU timings per draw call.However you can get GPU times for the whole scene using Unity’s built-in profiler (the onethat prints results to Xcode output).Apple’s tools currently can only tell you how busy GPU and it’s parts are, but do not givetimes in milliseconds.For shader profiling, PVRUniSCo can be used, but it does not have GPU profile for SGX543(iPad2), and it won’t match what Apple’s drivers are doing exactly anyway. Still, a goodballpark measure.