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How do you debug a shader program?
To access the Shader Debugger:
- Start debugging your graphics project.
- From the Nsight menu, select Shaders List, which will cause the Shaders window to open in Visual Studio.
- To see the source code of a specific shader, double-click on a row in the Shaders window.
What are shader programs?
A Shader is a user-defined program designed to run on some stage of a graphics processor. Shaders provide the code for certain programmable stages of the rendering pipeline. They can also be used in a slightly more limited form for general, on-GPU computation.
Where can I find the HLSL shader debugger in Visual Studio?
The HLSL shader debugger provides a listing of HLSL shader assembly to the right of the HLSL source code listing. You can access the HLSL debugger from the Pipeline Stages or Pixel History windows. In the Graphics Pipeline Stages window, locate the pipeline stage that’s associated with the shader that you want to debug.
Can You debug an app and its shader code at the same time?
It’s not possible to debug an app and its shader code at the same time. However, you can alternate between them. You can add variables and registers to the Watch window, but expressions are not supported. Nevertheless, the HLSL debugger provides a better, more CPU-like debugging experience than would be possible otherwise.
When to debug the vertex shader in Visual Studio?
Debug the vertex shader when you suspect that the pixel shader is correct but is generating an incorrect color contribution because the vertex shader is passing incorrect constants to it. Otherwise, debug the pixel shader. To the right of the chosen shader, choose Start Debugging, which appears as a small green arrow.
How to debug a GLSL shader in OpenGL?
The GLSL Shader source code is compiled and linked by the graphics driver and executed on the GPU. If you want to debug the shader, then you have to use graphics debugger like RenderDoc or NVIDIA Nsight. Do offline rendering to a texture and evaluate the texture’s data.