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Vulkan: Convert VertexBuffer to Contain Supported Attributes #107733

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Jeroen Bakker merged 7 commits from Jeroen-Bakker/blender:vulkan-attribute-data-conversions into main 2023-05-11 12:23:29 +02:00
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Jeroen Bakker commented 2023-05-08 12:33:21 +02:00
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Vulkan doesn't have a conversion from uint32_t/int32_t to float. It does
have conversions from 16/8 bits. Main reason is that Vulkan expects that
there is no benefit when converting 32 bits from one type to the other
and should be solved by passing the right data type.

In Blender however this isn't the case as there are benefits on other
GPU backends (OpenGL for example).

This PR adds helper function to check if conversion is needed and
perform any conversions in place. It also implements the function to
upload vertex buffers to the GPU.

NOTE: Test cases have been added to validate this, but they are not
able to run on the Vulkan backend just yet, because they require the
graphics pipeline to be available.

Vulkan doesn't have a conversion from uint32_t/int32_t to float. It does have conversions from 16/8 bits. Main reason is that Vulkan expects that there is no benefit when converting 32 bits from one type to the other and should be solved by passing the right data type. In Blender however this isn't the case as there are benefits on other GPU backends (OpenGL for example). This PR adds helper function to check if conversion is needed and perform any conversions in place. It also implements the function to upload vertex buffers to the GPU. NOTE: Test cases have been added to validate this, but they are not able to run on the Vulkan backend just yet, because they require the graphics pipeline to be available.
Jeroen Bakker added this to the 3.6 LTS milestone 2023-05-08 12:33:21 +02:00
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Jeroen Bakker self-assigned this 2023-05-08 12:33:21 +02:00
Jeroen Bakker added 1 commit 2023-05-08 12:33:26 +02:00
ad7465be67 Vulkan: Convert VertexBuffer to Contain Supported Attributes 
Vulkan doesn't have a conversion from uint32_t/int32_t to float. It does
have conversions from 16/8 bits. Main reason is that Vulkan expects that
there is no benefit when converting 32 bits from one type to the other
and should be solved by passing the right data type.

In Blender however this isn't the case as there are benefits on other
GPU backends (OpenGL for example).

This PR adds helper function to check if conversion is needed and
perform any conversions in place. It also implements the function to
upload vertex buffers to the GPU.
Jeroen Bakker added this to the EEVEE & Viewport project 2023-05-08 12:33:33 +02:00
Jeroen Bakker added 1 commit 2023-05-08 13:49:50 +02:00
Jeroen Bakker reviewed 2023-05-08 14:48:58 +02:00
source/blender/gpu/vulkan/vk_common.cc Outdated
@ -304,0 +389,4 @@
case GPU_COMP_I32:
case GPU_COMP_U32:
/* NOTE: GPU_COMP_I32/U32 using GPU_FETCH_INT_TO_FLOAT isn't natively supported. These are
* converted on the host and therefor needs to be attached as signed floats. */
Jeroen Bakker commented 2023-05-08 14:48:58 +02:00
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Jeroen Bakker force-pushed vulkan-attribute-data-conversions from 548461b029 to 253527cd8a 2023-05-11 12:19:05 +02:00 Compare
Jeroen Bakker added 1 commit 2023-05-11 12:21:29 +02:00
Jeroen Bakker merged commit 8aff713270 into main 2023-05-11 12:23:29 +02:00
Jeroen Bakker deleted branch vulkan-attribute-data-conversions 2023-05-11 12:23:30 +02:00
Howard Trickey referenced this issue from a commit 2023-05-29 02:51:40 +02:00
Merge in orign/main:
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