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Turnip_Gen8_V38 vs mainline-turnip-V32

On Adreno (TM) 840 (HONOR Magic8 pro, iQOO 15, LENOVO TB324ZC, nubia NX809J, OnePlus 15, POCO F8 Ultra, POCO F9 Ultra, realme RMX5210, Samsung Galaxy S26, Samsung Galaxy S26, Samsung Galaxy S26 Ultra, Samsung Galaxy S26 Ultra, Samsung Galaxy S26 Ultra, Samsung Galaxy Z Fold8, Samsung Galaxy Z Fold8 Ultra, Xiaomi 17, Xiaomi 2512BPNDAG). The first driver named is compared against the second, which is the baseline.

Stockmainline-turnip-V32Mesa 26.3.0-devel (git-9c7e022677)

CustomTurnip_Gen8_V38Mesa 27.0.0-devel (git-f28352d117)

Graphics system version (Vulkan)? to 1.4.363

Optional features (extensions)? to 185not checked on both

Features that pass their check (validated)not tested on bothmainline-turnip-V32: no driver check yet

Speed test scenes (benchmark)0 faster 2 slower 1 even6% slower overall (geometric mean)

hdr_2160p5% slower
oit_linked_lists0% slower
pipeline_barriers_2160p12% slower

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: 1486 of 2304 cells). The picture matches overall, so this is a local rendering fault, not a different scene.

Did not start every time: compute_nbody (stock 0 of 3, custom 3 of 3).

mainline-turnip-V32 details Turnip_Gen8_V38 details

Feature checks that differ

mainline-turnip-V32: no driver check (validation report) yet. Both drivers need a driver check before their feature checks can be compared.

Speed test scenes (benchmark)

Scene	mainline-turnip-V32 ms	Turnip_Gen8_V38 ms	Difference	Starts	GPU clock, MHz	Picture vs stock
compute_nbody	n/a	n/a	only one side	0 of 3 vs 3 of 3	? vs ? clock unknown	not checked
compute_nbody_2x	n/a	10.55 typical 10.64	only one side	? vs 3 of 3	? vs ? clock unknown	not checked
hdr_2160p	8.49 typical 8.50	8.91 typical 9.15	5% slower	3 of 3 vs 3 of 3	? vs ? clock unknown	no large difference 0.0 no small difference worst 0.0 64x36
oit_linked_lists	12.84 typical 12.78	12.89 typical 12.61	0% slower	3 of 3 vs 3 of 3	? vs ? clock unknown	no large difference 0.0 no small difference worst 0.0 64x36
pipeline_barriers	1.55 typical 1.44	1.56 typical 1.46	too light, see pipeline_barriers_2160p	3 of 3 vs 3 of 3	? vs ? clock unknown	no large difference 10.6 differs in 1486 small areas worst 62.7 64x36
pipeline_barriers_2160p	5.88 typical 5.46	6.71 typical 6.27	12% slower	3 of 3 vs 3 of 3	? vs ? clock unknown	no large difference 0.0 no small difference worst 0.0 64x36
subpasses	n/a	n/a	only one side	3 of 3 vs 3 of 3	? vs ? clock unknown	not checked
subpasses_2160p	9.76	n/a	only one side	3 of 3 vs 3 of 3	? vs ? clock unknown	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 Turnip_Gen8_V38 against mainline-turnip-V32. "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)

Both drivers need a driver check (validation report) before their technical details (Vulkan) can be compared.