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author | Clément Foucault <foucault.clem@gmail.com> | 2022-03-16 10:58:59 +0300 |
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committer | Clément Foucault <foucault.clem@gmail.com> | 2022-03-18 22:59:27 +0300 |
commit | d7df0dcccb50bbbc1e14cbe49bb128fa108b8a3e (patch) | |
tree | 82a855df4e730f9ccc79935d4221a65d556c0059 /source/blender/gpu/opengl/gl_backend.hh | |
parent | 7ee816e32f3655d4ca8abb555f885d8de9ba0520 (diff) |
GPU: Add indirect dispatch support.
This uses a StorageBuf as the source of indirect dispatch argument.
The user needs to make sure the parameters are in the right order.
There is no support for argument offset for the moment as there is no
need for it. But this might be added in the future.
Note that the indirect buffer is synchronized at the backend level. This is
done for practical reasons and because this feature is almost always used
for GPU driven pipeline.
Diffstat (limited to 'source/blender/gpu/opengl/gl_backend.hh')
-rw-r--r-- | source/blender/gpu/opengl/gl_backend.hh | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/source/blender/gpu/opengl/gl_backend.hh b/source/blender/gpu/opengl/gl_backend.hh index d7edd162f33..e72726d9c7b 100644 --- a/source/blender/gpu/opengl/gl_backend.hh +++ b/source/blender/gpu/opengl/gl_backend.hh @@ -123,6 +123,19 @@ class GLBackend : public GPUBackend { GLCompute::dispatch(groups_x_len, groups_y_len, groups_z_len); } + void compute_dispatch_indirect(StorageBuf *indirect_buf) override + { + GLContext::get()->state_manager_active_get()->apply_state(); + + dynamic_cast<GLStorageBuf *>(indirect_buf)->bind_as(GL_DISPATCH_INDIRECT_BUFFER); + /* This barrier needs to be here as it only work on the currently bound indirect buffer. */ + glMemoryBarrier(GL_DRAW_INDIRECT_BUFFER); + + glDispatchComputeIndirect((GLintptr)0); + /* Unbind. */ + glBindBuffer(GL_DRAW_INDIRECT_BUFFER, 0); + } + private: static void platform_init(); static void platform_exit(); |