Inigo Quillez has a function that calculates the eye ray transformation matrix for shaders and it looks like this:
mat3 calculateEyeRayTransformationMatrix( in vec3 ro, in vec3 ta, in float roll )
{
vec3 ww = normalize( ta - ro );
vec3 uu = normalize( cross(ww,vec3(sin(roll),cos(roll),0.0) ) );
vec3 vv = normalize( cross(uu,ww));
return mat3( uu, vv, ww );
| //----------------------CONSTANTS------------------------------------------ | |
| #define PI 3.141592653589793238462643383 | |
| //----------------------COLORSPACE CONVERSION------------------------------ | |
| vec3 encodeSRGB(vec3 linearRGB) | |
| { | |
| vec3 a = 12.92 * linearRGB; | |
| vec3 b = 1.055 * pow(linearRGB, vec3(1.0 / 2.4)) - 0.055; |
| @echo off | |
| setlocal | |
| REM Determine the directory from which the script is executed | |
| set "current_dir=%cd%" | |
| REM Check if dwebp.exe is available | |
| if not exist "%current_dir%\dwebp.exe" ( | |
| echo dwebp.exe not found in the current directory. | |
| exit /b |