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Turnip_Gen8_V38 vs turnip_faux123_v1.1.7

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.

Stockturnip_faux123_v1.1.7Mesa 26.3.0-devel (git-dd45fd0baa)

CustomTurnip_Gen8_V38Mesa 27.0.0-devel (git-f28352d117)

Graphics system version (Vulkan)1.4.359 to 1.4.363

Optional features (extensions)179 to 185+7 -1

Features that pass their check (validated)50 to 6516 pass only on Turnip_Gen8_V38 1 pass only on turnip_faux123_v1.1.7

Speed test scenes (benchmark)0 faster 1 slower13% slower 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_nbody_2x13% 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 2 scenes (pipeline_barriers: 1359 of 2304 cells, pipeline_barriers_2160p: 1348 of 2304 cells). The picture matches overall, so this is a local rendering fault, not a different scene.

turnip_faux123_v1.1.7 details Turnip_Gen8_V38 details

Feature checks that differ (18)

Feature	turnip_faux123_v1.1.7	Turnip_Gen8_V38	Change
core.copy_wide_row_length core	pass	fail	lost
depthClamp VkPhysicalDeviceFeatures	untested	pass	gained
largePoints VkPhysicalDeviceFeatures	untested	pass	gained
compat.helper_loop_terminator core	untested	pass	gained
core.blend_advertised_formats core	untested	pass	gained
core.compute_big_stack core	untested	pass	gained
core.host_coherent_readback core	untested	pass	gained
core.mrt_partial_kill core	untested	pass	gained
core.ubo_update_buffer core	untested	pass	gained
core.ubo_written_after_record core	untested	pass	gained
core.varying_subset core	untested	pass	gained
mem.image_padding core	untested	pass	gained
perf.fb_local_barrier_large_draws core	untested	pass	gained
perf.fb_local_barrier_overdraw core	untested	pass	gained
stage.geometry_max_output core	untested	pass	gained
stage.geometry_point_size core	untested	pass	gained
sync.first_submit_clear_then_compute core	untested	pass	gained
compat.nested_map core	untested	crash	changed

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	turnip_faux123_v1.1.7 ms	Turnip_Gen8_V38 ms	Difference	Starts	GPU clock, MHz	Picture vs stock
compute_nbody	n/a	n/a	too light, see compute_nbody_2x	3 of 3 vs 3 of 3	? vs ? clock unknown	no large difference 0.0 no small difference worst 0.0 64x36
compute_nbody_2x	9.19 typical 9.27	10.55 typical 10.64	13% slower	3 of 3 vs 3 of 3	? vs ? clock unknown	no large difference 0.0 no small difference worst 0.0 64x36
hdr_2160p	n/a	9.15	only one side	3 of 3 vs 3 of 3	? vs ? clock unknown	no large difference 0.0 no small difference worst 0.3 64x36
oit_linked_lists	n/a	12.61	only one side	3 of 3 vs 3 of 3	? vs ? clock unknown	no large difference 0.0 no small difference worst 0.0 64x36
pipeline_barriers	n/a	1.46	only one side	3 of 3 vs 3 of 3	? vs ? clock unknown	no large difference 9.3 differs in 1359 small areas worst 79.3 64x36
pipeline_barriers_2160p	n/a	6.27	only one side	3 of 3 vs 3 of 3	? vs ? clock unknown	no large difference 9.1 differs in 1348 small areas worst 74.0 64x36
subpasses	n/a	n/a	only one side	3 of 3 vs 3 of 3	? vs ? clock unknown	not checked
subpasses_2160p	n/a	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 turnip_faux123_v1.1.7. "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 Turnip_Gen8_V38 (7)

VK_EXT_fragment_density_map
VK_EXT_fragment_density_map_offset
VK_KHR_shader_quad_control
VK_QCOM_fragment_density_map_offset
VK_QCOM_rotated_copy_commands
VK_VALVE_buffer_device_address_allocation_alignment
VK_VALVE_fragment_density_map_layered

Extensions only in turnip_faux123_v1.1.7 (1)

VK_EXT_shader_subgroup_ballot

Core features that differ (0)

None

Limits that differ (2)

Limit	turnip_faux123_v1.1.7	Turnip_Gen8_V38
maxComputeSharedMemorySize	32768	65536
maxComputeWorkGroupInvocations	1024	2048

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

Only in Turnip_Gen8_V38:

None

Only in turnip_faux123_v1.1.7:

None