diff options
| author | Jeroen Bakker <jbakker> | 2021-05-26 18:02:32 +0300 |
|---|---|---|
| committer | Jeroen Bakker <jeroen@blender.org> | 2021-05-26 18:03:37 +0300 |
| commit | 8f9599d17e80254928d2d72081a4c7e0dee64038 (patch) | |
| tree | d34ff981e4e0e72ce894042c82587a4266728b16 /source/blender/draw/intern/draw_cache_impl_hair.c | |
| parent | 87055dc71b0d50cd25660969b55cda7d44af6a12 (diff) | |
DrawManager: Use Compute Shader to Update Hair.
This patch will use compute shaders to create the VBO for hair.
The previous implementation uses tranform feedback.
Timings master (transform feedback with GPU_USAGE_STATIC between 0.000069s and 0.000362s
Timings transform feedback with GPU_USAGE_DEVICE_ONLY. between 0.000057s and 0.000122s
Timings compute shader between 0.000032 and 0.000092s
Future improvements:
* Generate hair Index buffer using compute shaders: currently done single threaded on CPU, easy to add as compute shader.
Reviewed By: fclem
Differential Revision: https://developer.blender.org/D11057
Diffstat (limited to 'source/blender/draw/intern/draw_cache_impl_hair.c')
| -rw-r--r-- | source/blender/draw/intern/draw_cache_impl_hair.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/source/blender/draw/intern/draw_cache_impl_hair.c b/source/blender/draw/intern/draw_cache_impl_hair.c index fd28ac00186..6424b21666d 100644 --- a/source/blender/draw/intern/draw_cache_impl_hair.c +++ b/source/blender/draw/intern/draw_cache_impl_hair.c @@ -243,7 +243,8 @@ static void hair_batch_cache_ensure_procedural_final_points(ParticleHairCache *c GPUVertFormat format = {0}; GPU_vertformat_attr_add(&format, "pos", GPU_COMP_F32, 4, GPU_FETCH_FLOAT); - cache->final[subdiv].proc_buf = GPU_vertbuf_create_with_format(&format); + cache->final[subdiv].proc_buf = GPU_vertbuf_create_with_format_ex(&format, + GPU_USAGE_DEVICE_ONLY); /* Create a destination buffer for the transform feedback. Sized appropriately */ /* Those are points! not line segments. */ |