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WEBGL_multi_draw performance on WebGL Animometer

More complete tests of WEBGL_multi_draw with 20,000 triangles

Uniforms vs. UBOs

Attribute arrays vs. attribute arrays

Using WEBGL_multi_draw in Chromium is faster on both the renderer and GPU threads on all platforms.

Significant reduction of bindings cost
Significant speedup of GPU thread time with uniform data

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Mac AMD Thread Breakdown

	Control (ms)	MultiDraw (ms)	Speedup
renderer_main	2.50	0.75	3.33 x
GPU	8.85	7.69	1.15 x
frame_time	25.32	23.27	1.09 x

	Control (ms)	MultiDraw (ms)	Speedup
renderer_main	19.44	0.66	29.45 x
GPU	34.59	13.24	2.61 x
frame_time	38.90	19.64	1.98 x

Animometer w/ Attrib Arrays

Animometer w/ Uniforms

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Windows NVIDIA Thread Breakdown

	Control (ms)	MultiDraw (ms)	Speedup
renderer_main	2.20	0.38	5.79 x
GPU	16.99	15.87	1.07 x
frame_time	33.16	23.08	1.44 x

	Control (ms)	MultiDraw (ms)	Speedup
renderer_main	21.00	0.48	43.75 x
GPU	32.20	9.75	3.30 x
frame_time	36.07	16.73	2.16 x

Animometer w/ Attrib Arrays

Animometer w/ Uniforms

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Linux NVIDIA Thread Breakdown

	Control (ms)	MultiDraw (ms)	Speedup
renderer_main	1.27	0.21	6.05 x
GPU	4.74	3.57	1.33 x
frame_time	16.66	16.66	1.00 x

	Control (ms)	MultiDraw (ms)	Speedup
renderer_main	17.00	0.23	73.91 x
GPU	17.35	3.13	5.54 x
frame_time	19.44	16.66	1.17 x

Animometer w/ Attrib Arrays

Animometer w/ Uniforms