RADV Radeon Vulkan Code Enables More Driver Features

Written by Michael Larabel in Vulkan on 22 December 2016 at 05:00 AM EST. 9 Comments
VULKAN
The RADV Radeon Vulkan driver in Mesa has seen some activity last night to enable more fine-grained features.

RADV now enables shaderImageGatherExtended. The image gather extended functionality for shaders is described via the Vulkan registry as "indicates whether the extended set of image gather instructions are available in shader code. If this feature is not enabled, the OpImage*Gather instructions do not support the Offset and ConstOffsets operands. This also indicates whether shader modules can declare the ImageGatherExtended capability."

That was followed by shaderStorageImageExtendedFormats support in RADV. Again from the registry, "indicates whether the extended storage image formats are available in shader code. If this feature is not enabled, the formats requiring the StorageImageExtendedFormats capability are not supported for storage images. This also indicates whether shader modules can declare the StorageImageExtendedFormats capability."

For those wondering what the overall state of VkPhysicalDeviceFeatures -- what specifies the supported fine-grained features -- is for the driver: RADV still has yet to support geometry shaders, tessellation shaders, sample rate shading, support for multiple viewports, ETC2 texture compression, ASTC LDR texture compression, pipeline statistics query, multisampled storage images, shaderStorageImageReadWithoutFormat, 64-bit float, 64-bit integers, 16-bit integers, variableMultisampleRate, and inherited queries.

If you are wondering how the VkPhysicalDeviceFeatures of the Intel ANV driver compares: the Intel driver still has to land tessellation shaders, multi-draw indirect, depth bounds, pipeline statistics query, shader image gather extended, shaderStorageImageMultisample, shaderStorageImageReadWithoutFormat, 64-bit floats, 64-bit integers, 16-bit integers, shaderResourceMinLod, variableMultisampleRate, and inherited queries.
Related News
About The Author
Michael Larabel

Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 20,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter, LinkedIn, or contacted via MichaelLarabel.com.

Popular News This Week