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/gpu/opengl/gl_backend.cc | |
| 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/gpu/opengl/gl_backend.cc')
| -rw-r--r-- | source/blender/gpu/opengl/gl_backend.cc | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/source/blender/gpu/opengl/gl_backend.cc b/source/blender/gpu/opengl/gl_backend.cc index fb03a2c2d2a..d85f9f7684d 100644 --- a/source/blender/gpu/opengl/gl_backend.cc +++ b/source/blender/gpu/opengl/gl_backend.cc @@ -438,6 +438,14 @@ void GLBackend::capabilities_init() GCaps.mem_stats_support = GLEW_NVX_gpu_memory_info || GLEW_ATI_meminfo; GCaps.shader_image_load_store_support = GLEW_ARB_shader_image_load_store; GCaps.compute_shader_support = GLEW_ARB_compute_shader; + if (GCaps.compute_shader_support) { + glGetIntegeri_v(GL_MAX_COMPUTE_WORK_GROUP_COUNT, 0, &GCaps.max_work_group_count[0]); + glGetIntegeri_v(GL_MAX_COMPUTE_WORK_GROUP_COUNT, 1, &GCaps.max_work_group_count[1]); + glGetIntegeri_v(GL_MAX_COMPUTE_WORK_GROUP_COUNT, 2, &GCaps.max_work_group_count[2]); + glGetIntegeri_v(GL_MAX_COMPUTE_WORK_GROUP_SIZE, 0, &GCaps.max_work_group_size[0]); + glGetIntegeri_v(GL_MAX_COMPUTE_WORK_GROUP_SIZE, 1, &GCaps.max_work_group_size[1]); + glGetIntegeri_v(GL_MAX_COMPUTE_WORK_GROUP_SIZE, 2, &GCaps.max_work_group_size[2]); + } GCaps.shader_storage_buffer_objects_support = GLEW_ARB_shader_storage_buffer_object; /* GL specific capabilities. */ glGetIntegerv(GL_MAX_3D_TEXTURE_SIZE, &GLContext::max_texture_3d_size); |