D3D11ShaderReflection and Constant Buffer slot

Graphics and GPU Programming Programming

Started by judeclarke July 26, 2011 04:44 AM

2 comments, last by Jason Z 12 years, 8 months ago

130

Author

July 26, 2011 04:44 AM

I have been building a subsystem that sets my parameters via what is generated from ID3D11ShaderReflection , however, I seem to be over looking where the ConstantBuffer register slot can be found. The most obvious thing to me would be to have it in D3D11_SHADER_BUFFER_DESC , but I don't see it in there. How can I get the ConstantBuffer's register slot so I can then set it with the Set??ConstantBuffers ?

Jason Z

6,437

July 26, 2011 04:52 AM

I have been building a subsystem that sets my parameters via what is generated from ID3D11ShaderReflection , however, I seem to be over looking where the ConstantBuffer register slot can be found. The most obvious thing to me would be to have it in D3D11_SHADER_BUFFER_DESC , but I don't see it in there. How can I get the ConstantBuffer's register slot so I can then set it with the Set??ConstantBuffers ?

You are looking for the D3D11_SHADER_INPUT_BIND_DESC, which contains the information about where to bind the constant buffer resource. The reflection API can get a little confusing at times, but if you want to see a reference you can take a look at the RendererDX11::LoadShader() function in my engine (see link below for the project page).

Jason Zink :: DirectX MVP

Direct3D 11 engine on CodePlex: Hieroglyph 3

Direct3D Books: Practical Rendering and Computation with Direct3D 11, Programming Vertex, Geometry, and Pixel Shaders
Articles: Dual-Paraboloid Mapping Article :: Parallax Occlusion Mapping Article (original):: Fast Silhouettes Article

Games: Lunar Rift

judeclarke

130

Author

July 26, 2011 05:23 AM

Oh I see, that was certainly a bit different than what I was expecting. So the BindPoint variable is the register index, right?