I've added a vertical offset, do you want to merge?

[erbarratt]

Hi there, I've added a vertical offset for FFR, for headsets like the Varjo Aero where the eye centre is actually computed as quite far down.

It's another parameter in the yaml, and is simply taken from the computed L/R eye centre Y. Seeing as these vals are 0 - 1, offsets work in the range 0 - 0.5. In the function for creating VRS pattern.

Can I send you code? I didn't fork, I cloned.

[RavenSystem]

Sure.

[erbarratt]

FixedFoveatedConfig &ffr = g_config.ffr;
ffr.enabled = ffrCfg["enabled"].as<bool>(ffr.enabled);
ffr.favorHorizontal = ffrCfg["favorHorizontal"].as<bool>(ffr.favorHorizontal);
ffr.innerRadius = ffrCfg["innerRadius"].as<float>(ffr.innerRadius);
ffr.midRadius = ffrCfg["midRadius"].as<float>(ffr.midRadius);
ffr.outerRadius = ffrCfg["outerRadius"].as<float>(ffr.outerRadius);
ffr.verticalOffset = ffrCfg["verticalOffset"].as<float>(ffr.verticalOffset); //<----------added this
ffr.overrideSingleEyeOrder = ffrCfg["overrideSingleEyeOrder"].as<std::string>(ffr.overrideSingleEyeOrder);

^ in config.cpp

std::vector<uint8_t> CreateCombinedFixedFoveatedVRSPattern( int width, int height, float leftProjX, float leftProjY, float rightProjX, float rightProjY ) {
    std::vector<uint8_t> data (width * height);
    int halfWidth = width / 2;

    for (int y = 0; y < height; ++y) {
        for (int x = 0; x < halfWidth; ++x) {
            float fx = float(x) / halfWidth;
            float fy = float(y) / height;
            float distance = 2 * sqrtf((fx - leftProjX) * (fx - leftProjX) + (fy - leftProjY - g_config.ffr.verticalOffset) * (fy - leftProjY - g_config.ffr.verticalOffset)); //<----------modified this
            data[y * width + x] = DistanceToVRSLevel(distance);
        }
        for (int x = halfWidth; x < width; ++x) {
            float fx = float(x - halfWidth) / halfWidth;
            float fy = float(y) / height;
            float distance = 2 * sqrtf((fx - rightProjX) * (fx - rightProjX) + (fy - rightProjY - g_config.ffr.verticalOffset) * (fy - rightProjY - g_config.ffr.verticalOffset)); //<----------modified this
            data[y * width + x] = DistanceToVRSLevel(distance);
        }
    }

    return data;
}

std::vector<uint8_t> CreateSingleEyeFixedFoveatedVRSPattern( int width, int height, float projX, float projY ) {
    std::vector<uint8_t> data (width * height);

    for (int y = 0; y < height; ++y) {
        for (int x = 0; x < width; ++x) {
            float fx = float(x) / width;
            float fy = float(y) / height;
            float distance = 2 * sqrtf((fx - projX) * (fx - projX) + (fy - projY - g_config.ffr.verticalOffset) * (fy - projY - g_config.ffr.verticalOffset)); //<----------modified this
            data[y * width + x] = DistanceToVRSLevel(distance);
        }
    }

    return data;
}

^modified these lines in d3d11_variable_rate_shading.cpp