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Cleanup: Consolidate draw attribute extraction #114340

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Hans Goudey merged 12 commits from HooglyBoogly/blender:cleanup-color-extract into main 2023-11-07 10:05:20 +01:00
Conversation 0 Commits 12 Files Changed 5 +429 -432
Hans Goudey commented 2023-10-31 20:16:01 +01:00
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Use the same attribute conversion class for PBVH and regular
mesh attribute extraction. This makes the GPU formats we use
for each attribute type more explicit and centralizes the conversions
from the attribute types to the GPU types. It's also a bit more aligned
to how we could use implicit sharing for GPU vertex buffer data.

Unfortunately it isn't possible to use this same code for curves
and point clouds because they use textures for their evaluated data,
and 3-wide vectors (e.g. float3) aren't supported on GPUs with our
current texture abstraction. For generic attributes, the long term
approach will probably be to use an SSBO instead.

Use the same attribute conversion class for PBVH and regular mesh attribute extraction. This makes the GPU formats we use for each attribute type more explicit and centralizes the conversions from the attribute types to the GPU types. It's also a bit more aligned to how we could use implicit sharing for GPU vertex buffer data. Unfortunately it isn't possible to use this same code for curves and point clouds because they use textures for their evaluated data, and 3-wide vectors (e.g. `float3`) aren't supported on GPUs with our current texture abstraction. For generic attributes, the long term approach will probably be to use an SSBO instead.
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Hans Goudey added 1 commit 2023-10-31 20:16:13 +01:00
Hans Goudey added the
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Hans Goudey added 2 commits 2023-10-31 23:26:34 +01:00
Hans Goudey added 1 commit 2023-11-01 08:30:21 +01:00
Hans Goudey added 1 commit 2023-11-01 09:36:15 +01:00
Hans Goudey added 2 commits 2023-11-01 15:38:00 +01:00
Hans Goudey added 1 commit 2023-11-01 16:00:02 +01:00
Hans Goudey added 1 commit 2023-11-01 17:25:04 +01:00
Hans Goudey requested review from Clément Foucault 2023-11-01 17:30:04 +01:00
Hans Goudey changed title from WIP: Cleanup: Consolidate draw attribute extraction to Cleanup: Consolidate draw attribute extraction 2023-11-01 17:30:11 +01:00
Hans Goudey added 1 commit 2023-11-01 17:31:23 +01:00
Clément Foucault approved these changes 2023-11-03 11:25:25 +01:00
source/blender/draw/intern/attribute_convert.hh Outdated
@ -0,0 +33,4 @@
};
template<> struct AttributeConverter<bool> {
using VBOT = VecBase<int, COMPONENT_LEN_SCALAR>;
Clément Foucault commented 2023-11-03 11:12:13 +01:00
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Maybe it's just me, but VBOT is a bit ambiguous. I would prefer VBO_T.

Maybe it's just me, but `VBOT` is a bit ambiguous. I would prefer `VBO_T`.
source/blender/draw/intern/draw_pbvh.cc
@ -1121,3 +989,1 @@
Converter::gpu_component_len,
Converter::gpu_fetch_mode);
});
format = draw::init_format_for_attribute(eCustomDataType(type), "data");
Clément Foucault commented 2023-11-03 11:24:01 +01:00
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You think it's good to have it returned? I guess this is optimized in most cases.

You think it's good to have it returned? I guess this is optimized in most cases.
Hans Goudey added 2 commits 2023-11-07 10:00:57 +01:00
Hans Goudey merged commit ae1b4a6a28 into main 2023-11-07 10:05:20 +01:00
Hans Goudey deleted branch cleanup-color-extract 2023-11-07 10:05:22 +01:00
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