Method computeRayPinhole

Source/Falcor/Scene/Camera/Camera.cpp:303–324

    }

    Ray Camera::computeRayPinhole(uint2 pixel, uint2 frameDim, bool applyJitter) const
    {
        Ray ray;
        ray.origin = mData.posW;

        // Compute the normalized ray direction assuming a pinhole camera.
        // Compute sample position in screen space in [0,1] with origin at the top-left corner.
        // The camera jitter offsets the sample by +-0.5 pixels from the pixel center.
        float2 p = (float2(pixel) + float2(0.5f, 0.5f)) / float2(frameDim);
        if (applyJitter) p += float2(-mData.jitterX, mData.jitterY);

        float2 ndc = float2(2.0f, -2.0f) * p + float2(-1.0f, 1.0f);

        // Compute the normalized ray direction assuming a pinhole camera.
        ray.dir = normalize(ndc.x * mData.cameraU + ndc.y * mData.cameraV + mData.cameraW);

        float invCos = 1.f / dot(normalize(mData.cameraW), ray.dir);
        ray.tMin = mData.nearZ * invCos;
        ray.tMax = mData.farZ * invCos;

        return ray;
    }

    void Camera::updateFromAnimation(const float4x4& transform)
    {