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panvk-g76-armsx2-v9 vs mali-panvk-27.0.0-devel-r8

On Mali-G52 (CHUWI HiPad-Air, HONOR X5c, HONOR X5c, Infinix HOT 60i, Oppo A18, Oppo A38, realme RMX3710, Redmi 12, Redmi 12C, Redmi 14C, Redmi 15C, Samsung Galaxy A32, TECNO POVA 3, TECNO SPARK 10 Pro, TECNO SPARK 20, Vivo Y03, Xiaomi 24049RN28L). The first driver named is compared against the second, which is the baseline.

Stockmali-panvk-27.0.0-devel-r8Mesa 27.0.0-devel (git-d896b0a9c1)

Custompanvk-g76-armsx2-v9Mesa 26.3.0-devel (git-d097871eb9)

Graphics system version (Vulkan)1.3.363 to 1.3.354

Optional features (extensions)160 to 160+9 -9

Features that pass their check (validated)45 to 390 pass only on panvk-g76-armsx2-v9 6 pass only on mali-panvk-27.0.0-devel-r8

Speed test scenes (benchmark)0 faster 2 slower 1 even8% 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_nbody1% slower
pipeline_barriers13% slower
subpasses8% 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: 1327 of 2304 cells). The picture matches overall, so this is a local rendering fault, not a different scene.

Did not start every time: hdr_2160p (stock 0 of 3, custom 0 of 3).

mali-panvk-27.0.0-devel-r8 details panvk-g76-armsx2-v9 details

Feature checks that differ (14)

Feature	mali-panvk-27.0.0-devel-r8	panvk-g76-armsx2-v9	Change
robustBufferAccess2 VK_EXT_robustness2	pass	unsupported	lost
geometryShader VkPhysicalDeviceFeatures	pass	crash	lost
multiDrawIndirect VkPhysicalDeviceFeatures	pass	fail	lost
occlusionQueryPrecise VkPhysicalDeviceFeatures	pass	fail	lost
tessellationShader VkPhysicalDeviceFeatures	pass	fail	lost
textureCompressionBC VkPhysicalDeviceFeatures	pass	unsupported	lost
nullDescriptor VK_EXT_robustness2	untested	unsupported	changed
geometryStreams VK_EXT_transform_feedback	untested	unsupported	changed
transformFeedback VK_EXT_transform_feedback	fail	unsupported	changed
shaderTessellationAndGeometryPointSize VkPhysicalDeviceFeatures	unsupported	untested	changed
vertexPipelineStoresAndAtomics VkPhysicalDeviceFeatures	untested	unsupported	changed
compat.helper_loop_terminator core	fail	untested	changed
compat.nested_map core	fail	untested	changed
push.max_combined_image_samplers core	fail	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	mali-panvk-27.0.0-devel-r8 ms	panvk-g76-armsx2-v9 ms	Difference	Starts	GPU clock, MHz	Picture vs stock
compute_nbody	103.56 typical 103.10	104.48 typical 104.28	1% 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	148.09 typical 147.38	n/a	only one side	0 of 3 vs 0 of 3	? vs ? clock unknown	not checked
oit_linked_lists	80.24	n/a	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	88.24 typical 90.54	101.82 typical 101.54	13% slower	3 of 3 vs 3 of 3	? vs ? clock unknown	no large difference 9.3 differs in 1327 small areas worst 77.3 64x36
subpasses	151.35 typical 152.48	165.26 typical 164.22	8% slower	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 panvk-g76-armsx2-v9 against mali-panvk-27.0.0-devel-r8. "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 panvk-g76-armsx2-v9 (9)

VK_ARM_rasterization_order_attachment_access
VK_EXT_present_timing
VK_EXT_rasterization_order_attachment_access
VK_KHR_present_id
VK_KHR_present_id2
VK_KHR_present_wait
VK_KHR_present_wait2
VK_KHR_swapchain_maintenance1
VK_KHR_swapchain_mutable_format

Extensions only in mali-panvk-27.0.0-devel-r8 (9)

VK_EXT_astc_decode_mode
VK_EXT_image_compression_control
VK_EXT_robustness2
VK_EXT_transform_feedback
VK_INTEL_shader_integer_functions2
VK_KHR_maintenance10
VK_KHR_maintenance11
VK_KHR_robustness2
VK_KHR_shader_constant_data

Core features that differ (9)

descriptorBindingPartiallyBound Vulkan 1.2	unsupported to pass
descriptorBindingSampledImageUpdateAfterBind Vulkan 1.2	unsupported to pass
descriptorBindingStorageBufferUpdateAfterBind Vulkan 1.2	unsupported to pass
descriptorBindingStorageImageUpdateAfterBind Vulkan 1.2	unsupported to pass
descriptorBindingStorageTexelBufferUpdateAfterBind Vulkan 1.2	unsupported to pass
descriptorBindingUniformBufferUpdateAfterBind Vulkan 1.2	unsupported to pass
descriptorBindingUniformTexelBufferUpdateAfterBind Vulkan 1.2	unsupported to pass
descriptorBindingUpdateUnusedWhilePending Vulkan 1.2	unsupported to pass
descriptorIndexing Vulkan 1.2	unsupported to pass

Limits that differ (11)

Limit	mali-panvk-27.0.0-devel-r8	panvk-g76-armsx2-v9
sparseAddressSpaceSize	30064771072	0
maxBoundDescriptorSets	7	4
maxTessellationControlPerVertexInputComponents	64	128
maxTessellationControlPerVertexOutputComponents	64	128
maxTessellationControlTotalOutputComponents	2048	4096
maxTessellationEvaluationInputComponents	64	128
maxTessellationEvaluationOutputComponents	64	128
maxGeometryOutputComponents	128	64
maxClipDistances	8	0
maxCullDistances	8	0
maxCombinedClipAndCullDistances	8	0

Formats supported by only one driver (0 gained, 16 lost)

Only in panvk-g76-armsx2-v9:

None

Only in mali-panvk-27.0.0-devel-r8:

BC4_SNORM_BLOCK
BC4_UNORM_BLOCK
BC5_SNORM_BLOCK
BC5_UNORM_BLOCK
BC6H_SFLOAT_BLOCK
BC6H_UFLOAT_BLOCK
BC7_SRGB_BLOCK
BC7_UNORM_BLOCK
G10X6_B10X6R10X6_2PLANE_420_UNORM_3PACK16
G10X6_B10X6R10X6_2PLANE_422_UNORM_3PACK16
G10X6_B10X6R10X6_2PLANE_444_UNORM_3PACK16
G10X6_B10X6_R10X6_3PLANE_420_UNORM_3PACK16
G10X6_B10X6_R10X6_3PLANE_422_UNORM_3PACK16
G10X6_B10X6_R10X6_3PLANE_444_UNORM_3PACK16
R10X6G10X6_UNORM_2PACK16
R10X6_UNORM_PACK16