BadPixmap and BadDrawable errors

[YerongLi]

Platform: bodhi linux + XFCE

GPU, drivers, and screen setup: Nvidia Geforce 650M Mac version

Compton version: compton/jammy,now 1-1 amd64 [installed]

Steps of reproduction

1. put this file under ~/local/grayscale.glsl

uniform float opacity;
uniform bool invert_color;
uniform sampler2D tex;

void main() {
vec4 c = texture2D(tex, gl_TexCoord[0].xy);
float y = dot(c.rgb, vec3(0.299, 0.587, 0.114));
// y = 1.0 -y;
gl_FragColor = vec4(y, y, y, 1.0);
}

2. Run this command should grayscale the screen
   compton --backend glx --glx-fshader-win "$(cat $HOME/local/grayscale.glsl)"&

Expected behavior

No warning, no errors. And the screen get gray scaled.

Current Behavior & Other details

$ gray
[1] 796349
yerong@yerong-MacBookPro:~/local$ glx_load_prog_main(): Failed to get location of uniform 'opacity'. Might be troublesome.
glx_load_prog_main(): Failed to get location of uniform 'invert_color'. Might be troublesome.
[     0.22 ] error    4 BadPixmap    request  151 minor   22 serial    677: "BadPixmap (invalid Pixmap parameter)"
[     0.22 ] error    9 BadDrawable  request  155 minor    4 serial    678: "BadDrawable (invalid Pixmap or Window parameter)"
[     0.22 ] error  161 Unknown      request  151 minor   16 serial      0: "GLXBadPixmap"
[     0.29 ] error  161 Unknown      request  151 minor   16 serial      0: "GLXBadPixmap"
[     0.29 ] error  161 Unknown      request  151 minor   23 serial    722: "GLXBadPixmap"
[     0.30 ] error    4 BadPixmap    request  151 minor   22 serial    953: "BadPixmap (invalid Pixmap parameter)"
[     0.30 ] error    9 BadDrawable  request  155 minor    4 serial    954: "BadDrawable (invalid Pixmap or Window parameter)"
[     0.30 ] error  161 Unknown      request  151 minor   16 serial      0: "GLXBadPixmap"