Feature requests (small-scale, near-term changes)
=================================================

Report CPU load per frame.

Report GPU load per frame.

Report CPU frequency per frame.

Report GPU frequency per frame.

Report shader compilation time.

Report elapsed time per frame.

Add options to control which metrics should be collected.

Add Eric's tiny hash table for collecting per-shader statistics

	people.freedesktop.org:~anholt/hash_table

Capture GPU performance counters.

Allow dumping of shader source for investigation

Infrastructure (larger-scale things, more future-looking items)
===============================================================

Use ncurses for a better top-like display.

Report timestamps and CPU time durations for operations causing
CPU/GPU syncs.

Emit per-frame data in a format for external timeline viewer.

Allow enabling/disabling of tracing at run-time

	Such as via signals, (optionally specified by env. variable)

Investigation for other potential features
==========================================

Audit Eric's recipe for performance tuning to see what else fips
should automatically collect:

	http://dri.freedesktop.org/wiki/IntelPerformanceTuning/

Audit exisiting visualization tools before writing one from scratch

	Eero suggested two possibilities:

		pytimechart
		-----------
		http://pythonhosted.org/pytimechart/index.html

		e-graph
		-------
		https://gitorious.org/e-graph

	Others?

Explore using perf/LTTng probing instead of LD_PRELOAD wrapper

	This has the advantage of allowing full-system,
	multi-process data collection.

Things to change while replaying to isolate impact of different pieces
of the pipeline (list by Eero)
==============================
    The interesting "what is a bottleneck" experiments are
    (from back of 3D pipeline to front):
    - Disable blend (= disable related dst reads)
    - Binding 1x1 / NULL texture instead of real ones [1]
    - Using simple pass-through pixel shader instead of real ones [2]
    - Use kill / discard pixel shader instead of real ones
    - Use 0x0 / 1x1 scissor rect
    - Front+backface cull
    - Disable draws