oglc/shader/include/camera.glsl

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2021-08-10 02:11:22 +02:00
// view space axes
uniform vec3 _w;
uniform vec3 _u;
uniform vec3 _v;
uniform mat4 _cameraInverseProjection;
uniform vec3 _camh;
uniform vec3 _camv;
uniform vec3 _camll;
uniform vec3 _cpos;
uniform vec3 _tpos;
Ray createCameraRay(vec2 uv)
{
// transform -1..1 -> 0..1
uv = uv*0.5+0.5;
vec3 target = vec3(0,0,0);
vec3 dir;
dir = uv.x*_camh + uv.y*_camv;
dir = _camll + uv.x*_camh + uv.y*_camv;
dir = normalize(dir);
Ray ray = createRay(_cpos, dir);
return ray;
};