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EXP_PanVK-kbase-ace-lab86 vs EXP_PanVK-kbase-ace-lab40

On Mali-G610 (GameForce Ace, Infinix GT 20 Pro, Infinix NOTE Edge, Nothing Phone (2a) Plus, realme 真我 GT NEO 3 150W, Vivo V27, Xiaomi 13T). The first driver named is compared against the second, which is the baseline.

StockEXP_PanVK-kbase-ace-lab40PanVK-kbase beta.14 (Mesa 26.3.0-devel (git-5a07217f03))

CustomEXP_PanVK-kbase-ace-lab86PanVK-kbase RC3-lowmem (Mesa 26.3.0-devel (git-a6db27309d))

Graphics system version (Vulkan)1.4.363 to 1.4.363

Optional features (extensions)185 to 185+0 -0

Features that pass their check (validated)50 to 522 pass only on EXP_PanVK-kbase-ace-lab86 0 pass only on EXP_PanVK-kbase-ace-lab40

Speed test scenes (benchmark)2 faster 0 slower 3 even4% faster overall (geometric mean)

Games each driver could run (an estimate from its feature list): green likely, yellow maybe, orange limited, red no

StockDX92002+DX102006+DX112009+DX122015+Switch

CustomDX92002+DX102006+DX112009+DX122015+Switch

compute_nbody1% faster
hdr_2160p0% slower
oit_linked_lists1% faster
pipeline_barriers18% faster
subpasses4% faster

Custom driver against stock, per scene. Bars to the right are faster, to the left slower.

Small areas of the picture differ from the stock driver in 1 scene (pipeline_barriers: 1623 of 2304 cells). The picture matches overall, so this is a local rendering fault, not a different scene.

EXP_PanVK-kbase-ace-lab40 details EXP_PanVK-kbase-ace-lab86 details

Feature checks that differ (2)

Feature	EXP_PanVK-kbase-ace-lab40	EXP_PanVK-kbase-ace-lab86	Change
compat.helper_loop_terminator core	untested	pass	gained
compat.nested_map core	untested	pass	gained

Speed test scenes (benchmark)

The two drivers were not measured on the same set of device models. Frame times from different devices do not compare drivers, so read these numbers with that in mind.

Scene	EXP_PanVK-kbase-ace-lab40 ms	EXP_PanVK-kbase-ace-lab86 ms	Difference	Starts	GPU clock, MHz	Picture vs stock
compute_nbody	19.08 typical 18.89	18.89 typical 18.80	1% faster	3 of 3 vs 3 of 3	1000 vs 1000	no large difference 0.0 no small difference worst 0.0 64x36
hdr_2160p	32.12 typical 31.81	32.22 typical 31.79	0% slower	3 of 3 vs 3 of 3	1000 vs 1000	no large difference 0.0 no small difference worst 0.0 64x36
oit_linked_lists	23.59 typical 23.58	23.40 typical 23.38	1% faster	3 of 3 vs 3 of 3	1000 vs 1000	no large difference 0.0 no small difference worst 0.0 64x36
pipeline_barriers	10.44 typical 10.45	8.87 typical 8.87	18% faster	3 of 3 vs 3 of 3	1000 vs 1000	no large difference 10.6 differs in 1623 small areas worst 56.3 64x36
subpasses	19.50 typical 19.51	18.82 typical 18.83	4% faster	3 of 3 vs 3 of 3	1000 vs 1000	not checked

Time to draw one frame, per scene: the average (mean) frame time of the scene's best round, which is how many frames the driver delivered; lower is faster. "Typical" beside it is the median frame, which can sit well under the average when a driver's frames come in two speeds. A pair of reports made before per-round averages were recorded is compared on the median. A scene whose rounds disagree by more than 15% is left out. A scene marked "paced" was held at that mean frame time by the driver or the display queue, together with at least one other scene of the same run; its time says how the frames were spaced, not how fast the driver rendered, so it is not compared. A scene marked "too light" took under 8 ms at the standard size (1920 by 1080) on both drivers, where the screen's frame queue spaces the frames more than the chip does; its heavier run is the one compared: the row ending in _2160p is the scene drawn at 3840 by 2160, and compute_nbody_2x is that scene with twice the particles. "Faster" and "slower" describe EXP_PanVK-kbase-ace-lab86 against EXP_PanVK-kbase-ace-lab40. "Picture vs stock" compares one fixed frame per scene as a coarse colour grid (0 is identical, above 40 is a different picture); it finds a scene that was not drawn. Where both reports carry the finer 64x36 grid, the second figure is how many of its 2,304 cells differ by more than 4 of 255, and "worst" is the largest single cell; this is what finds a small rendering error in a picture that otherwise matches. A row marked 16x9 comes from a report made before the finer grid existed. "Starts" is how many of a scene's process starts reached a measured round. A GPU clock marked "not comparable" differed by more than 5% of the device's maximum between the two timings.

Technical differences (Vulkan)

Extensions only in EXP_PanVK-kbase-ace-lab86 (0)

None

Extensions only in EXP_PanVK-kbase-ace-lab40 (0)

None

Core features that differ (0)

None

Limits that differ (1)

Limit	EXP_PanVK-kbase-ace-lab40	EXP_PanVK-kbase-ace-lab86
timestampPeriod	76.9231	41.6667

Formats supported by only one driver (8 gained, 0 lost)

Only in EXP_PanVK-kbase-ace-lab86:

BC4_SNORM_BLOCK
BC4_UNORM_BLOCK
BC5_SNORM_BLOCK
BC5_UNORM_BLOCK
BC6H_SFLOAT_BLOCK
BC6H_UFLOAT_BLOCK
BC7_SRGB_BLOCK
BC7_UNORM_BLOCK

Only in EXP_PanVK-kbase-ace-lab40:

None