GLSL compile error with noise1 function

Developer Tools Nsight Visual Studio Edition
1

When I use the “noise1” built-in function I get a compile error when running the debugger. This only seems to be when I use the function in a dynamic subroutine. The code compiles when I run the program normally

#version 400 core
#extension GL_EXT_gpu_shader4 : enable
#extension GL_ARB_separate_shader_objects : enable

struct vertex_struct
{
  vec4  colour;
  vec3	fragmentNormal;
  vec3	dummy;
  vec2	texture0;
  vec2	texture1;
};

layout(location = 0, index = 0) out vec4 fFragColour;

subroutine vec4 fetchColour_Type(vec2 p_ST, vec4 p_Vertex_Colour);
subroutine uniform fetchColour_Type u_fetchColour;

//
// procedural texture from slope and height
// 
subroutine (fetchColour_Type)
vec4  fetchTinProceduralColour(vec2 p_ST, vec4 p_Colour)
{
  float mixer = 0;
  mixer = (noise1(p_ST) + 1) / 2.0f;
  return vec4(mixer,1,1,1);

}

in  vertex_struct     vData;
void main()
{
#if (1)
  vec4 colour = vData.colour;
  colour = u_fetchColour(vData.texture0.st,colour);
#else
  float mixer = 0;
  mixer = (noise1(vData.texture0.st) + 1) / 2.0f;
  vec4 colour = vec4(mixer,1,1,1);
#endif
  fFragColour = colour;
}
2

I am using nSight version 3.1 build 3.1.0.13204, driver 326.19 64bit, nVidia 770

3

Hi,

Can you post the error message or what you see? What OS are you on? Could you try the latest driver build 326.41?
Thanks

4

I have installed the beta driver and get the same error

I am using Windows 7 64bit

Error
javascript:void();
We failed to link program Fragment Info
(0) fatal error C9999 *** exception during compilation ***

My compile logic is

compile vertex shader
compile fragment shader
link

5

ignore that line “javascript:void():” I don’tknow where that can from

6

Hi tonyo_au,

unfortunately, you are hitting a compiler bug related to function parameter passing we have already fixed, but did not make it into the release driver, yet.

As a workaround until a fixed driver is available you could try the following: Change your subroutine to

vec4 fetchTinProceduralColour(vec2 p_ST, vec4 p_Colour)
{
    vec2 v = p_ST;
    float mixer = (noise1(v) + 1) / 2.0f;
    return vec4(mixer,1,1,1);
}
7

Thanks,
I have a work around by supplying my own perlin noise function