I am trying to run a code that has a GUI built with pyglet. but it gives this error. I have searched and found that I need to directly set the version of GLSL to be used by the code but I don't know how. would be happy if you helped me out with it.
b"0:20(27): error: cannot initialize uniform weight in GLSL 1.10 (GLSL 1.20 required)\n0:20(27): error: array constructors forbidden in GLSL 1.10 (GLSL 1.20 or GLSL ES 3.00 required)\n0:20(27): error: initializer of uniform variable `weight' must be a constant expression\n0:79(17): error: could not implicitly convert operands to arithmetic operator\n0:79(16): error: operands to arithmetic operators must be numeric\n0:89(7): warning: `coeff' used uninitialized\n"
this is the shader.py file:
added the glsl file with the uniform weight in it
#ifdef GL_ES
precision highp float;
#endif
uniform sampler2D inlet;
uniform sampler2D disp0;
uniform float sigma;
uniform bool xmirror;
uniform vec3 colors[9];
uniform float streams[9];
/*mat4 gaussm = mat4(0.00000067, 0.00002292, 0.00019117, 0.00038771,
0.00002292, 0.00078634, 0.00655965, 0.01330373,
0.00019117, 0.00655965, 0.05472157, 0.11098164,
0.00038771, 0.01330373, 0.11098164, 0.22508352);*/
uniform float weight[5] = float[](0.2270270270, 0.1945946, 0.1216216216, 0.0540540541, 0.0162162162);
vec4 sample(vec2 p)
{
vec4 col;
if(streams[0] >= 0.)
{
int stream = 0;
for(int i=0;streams[stream] < min(p.x, 1.) && stream < 8;stream++) { }
col = vec4(colors[stream], 1.);
}
else {
col = texture2D(inlet, p);
}
return col;
}
float gaussian(float d, float s)
{
float pi = 3.141592653;
//return exp(- d*d / (4.0 * pi * s * s));
//return pow(4*pi*s*s, 0.5)*exp(- d*d / (4.0 * pi * s * s));
return exp(- d*d / (2.*s*s));
}
float gaussian2(float d, float s)
{
float pi = 3.141592653;
float c = pow(1.0 / (4.0 * pi * s), 0.5);
float e = -1.0*(d * d) / (4.0 * s);
return c * exp(e);
}
float gaussf(int i, int j,float nf, float s)
{
//return gaussm[i][j];
float fi = float(i)/nf;
float jf = float(j)/nf;
return gaussian2(sqrt(fi*fi+jf*jf), s);
}
float cosh(float x)
{
return (exp(x)+exp(-x))/2.;
}
float rect_calc(vec2 d)
{
float pi = 3.141592653;
float AR = 0.25;
float offset = 0.125;
float m = 155.;
float n = 155.;
vec3 xyz = vec3(0., (d.x/1.), (d.y/8. + offset));
float u = 0.;
float coeff = (16 * pow(AR, 2.)) / pow(pi, 4.);
float num;
float den;
for(float i = 1.; i <= n; i += 2.)
{
for(float j = 1.; j <= m; j += 2.)
{
num = sin(i * pi * xyz.y) * sin(j * pi * ((xyz.z)/AR));
den = i * j * (pow(AR, 2.) * pow(AR, 2.) + pow(j, 2.));
u += coeff * (num / den);
}
}
// Convert velocity to time-of-flight
float L = 2.0;
float u_mean = 0.0043;
float u_norm = u/u_mean;
return L / u_norm;
}
void main()
{
vec2 uv = gl_TexCoord[0].st;
if(xmirror)
{
uv.x = 1.-uv.x;
}
vec2 d = texture2D(disp0, uv).yz * vec2(1.,8.);
if(xmirror)
{
d.x = -d.x;
uv.x = 1.-uv.x;
}
vec2 p = uv + d;
if(sigma <= 0.)
{
gl_FragColor = sample(p);
} else {
//Sample
vec4 c = vec4(0.);
float Dt = sigma*rect_calc(uv.xy);
float s = pow(Dt, 0.5);
float s2 = 1.0;
float t = 0.;
int ni = 8;
float n = 8.;
for(int ii = 0; ii < ni-1; ii++)
{
float i = float(ii);
for(int jj = 0; jj < ni-1; jj++)
{
float j = float(jj);
t += gaussf(ii,jj,n-1.,s2)*4.;
c += gaussf(ii,jj,n-1.,s2) * (sample(p + vec2((n-1.-i)*s, (n-1.-j)*s)) + sample(p + vec2(-(n-1.-i)*s, (n-1.-j)*s)) + sample(p + vec2(-(n-1.-i)*s, -(n-1.-j)*s)) + sample(p + vec2((n-1.-i)*s, -(n-1.-j)*s)));
}
t += gaussf(ii,ni-1,n-1.,s2)*4.;
c += gaussf(ii,ni-1,n-1.,s2) * (sample(p + vec2((n-1.-i)*s, 0.)) + sample(p + vec2(-(n-1.-i)*s, 0.))+ sample(p + vec2(0., (n-1.-i)*s))+ sample(p + vec2(0., -(n-1.-i)*s)));
}
t += gaussf(ni-1,ni-1,n-1.,s2);
c += gaussf(ni-1,ni-1,n-1.,s2) * sample(p);
//gl_FragColor = c;
gl_FragColor = c/t;
//gl_FragColor = (sigma*rect_calcu(uv.xy))*c/t;
}
}
well it got solved!
just needed to add the directive #version 120 at the beginning of the shader like this:
#version 120
#ifdef GL_ES
precision highp float;
#endif
uniform sampler2D inlet;
uniform sampler2D disp0;
uniform float sigma;
uniform bool xmirror;
uniform vec3 colors[9];
uniform float streams[9];
/*mat4 gaussm = mat4(0.00000067, 0.00002292, 0.00019117, 0.00038771,
0.00002292, 0.00078634, 0.00655965, 0.01330373,
0.00019117, 0.00655965, 0.05472157, 0.11098164,
0.00038771, 0.01330373, 0.11098164, 0.22508352);*/
uniform float weight[5] = float[](0.2270270270, 0.1945946, 0.1216216216, 0.0540540541, 0.0162162162);
vec4 sample(vec2 p)
{
vec4 col;
if(streams[0] >= 0.)
{
int stream = 0;
for(int i=0;streams[stream] < min(p.x, 1.) && stream < 8;stream++) { }
col = vec4(colors[stream], 1.);
}
else {
col = texture2D(inlet, p);
}
return col;
}
float gaussian(float d, float s)
{
float pi = 3.141592653;
//return exp(- d*d / (4.0 * pi * s * s));
//return pow(4*pi*s*s, 0.5)*exp(- d*d / (4.0 * pi * s * s));
return exp(- d*d / (2.*s*s));
}
float gaussian2(float d, float s)
{
float pi = 3.141592653;
float c = pow(1.0 / (4.0 * pi * s), 0.5);
float e = -1.0*(d * d) / (4.0 * s);
return c * exp(e);
}
float gaussf(int i, int j,float nf, float s)
{
//return gaussm[i][j];
float fi = float(i)/nf;
float jf = float(j)/nf;
return gaussian2(sqrt(fi*fi+jf*jf), s);
}
float cosh(float x)
{
return (exp(x)+exp(-x))/2.;
}
float rect_calc(vec2 d)
{
float pi = 3.141592653;
float AR = 0.25;
float offset = 0.125;
float m = 155.;
float n = 155.;
vec3 xyz = vec3(0., (d.x/1.), (d.y/8. + offset));
float u = 0.;
float coeff = (16 * pow(AR, 2.)) / pow(pi, 4.);
float num;
float den;
for(float i = 1.; i <= n; i += 2.)
{
for(float j = 1.; j <= m; j += 2.)
{
num = sin(i * pi * xyz.y) * sin(j * pi * ((xyz.z)/AR));
den = i * j * (pow(AR, 2.) * pow(AR, 2.) + pow(j, 2.));
u += coeff * (num / den);
}
}
// Convert velocity to time-of-flight
float L = 2.0;
float u_mean = 0.0043;
float u_norm = u/u_mean;
return L / u_norm;
}
void main()
{
vec2 uv = gl_TexCoord[0].st;
if(xmirror)
{
uv.x = 1.-uv.x;
}
vec2 d = texture2D(disp0, uv).yz * vec2(1.,8.);
if(xmirror)
{
d.x = -d.x;
uv.x = 1.-uv.x;
}
vec2 p = uv + d;
if(sigma <= 0.)
{
gl_FragColor = sample(p);
} else {
//Sample
vec4 c = vec4(0.);
float Dt = sigma*rect_calc(uv.xy);
float s = pow(Dt, 0.5);
float s2 = 1.0;
float t = 0.;
int ni = 8;
float n = 8.;
for(int ii = 0; ii < ni-1; ii++)
{
float i = float(ii);
for(int jj = 0; jj < ni-1; jj++)
{
float j = float(jj);
t += gaussf(ii,jj,n-1.,s2)*4.;
c += gaussf(ii,jj,n-1.,s2) * (sample(p + vec2((n-1.-i)*s, (n-1.-j)*s)) + sample(p + vec2(-(n-1.-i)*s, (n-1.-j)*s)) + sample(p + vec2(-(n-1.-i)*s, -(n-1.-j)*s)) + sample(p + vec2((n-1.-i)*s, -(n-1.-j)*s)));
}
t += gaussf(ii,ni-1,n-1.,s2)*4.;
c += gaussf(ii,ni-1,n-1.,s2) * (sample(p + vec2((n-1.-i)*s, 0.)) + sample(p + vec2(-(n-1.-i)*s, 0.))+ sample(p + vec2(0., (n-1.-i)*s))+ sample(p + vec2(0., -(n-1.-i)*s)));
}
t += gaussf(ni-1,ni-1,n-1.,s2);
c += gaussf(ni-1,ni-1,n-1.,s2) * sample(p);
//gl_FragColor = c;
gl_FragColor = c/t;
//gl_FragColor = (sigma*rect_calcu(uv.xy))*c/t;
}
}