Function NvAPI_Disp_HdrColorControl

src/nvapi/nvapi.cpp:369–450

}

NVAPI_INTERFACE
NvAPI_Disp_HdrColorControl(NvU32 displayId, NV_HDR_COLOR_DATA *pHdrColorData) {
  switch (pHdrColorData->version) {
  case NV_HDR_COLOR_DATA_VER1:
  case NV_HDR_COLOR_DATA_VER2:
    break;
  default:
    return NVAPI_INCOMPATIBLE_STRUCT_VERSION;
  }

  WMTHDRMetadata metadata;
  WMTColorSpace colorspace = WMTColorSpaceSRGB;

  if (pHdrColorData->cmd == NV_HDR_CMD_GET) {
    if (WMTQueryDisplaySetting(displayId, &colorspace, &metadata)) {
      pHdrColorData->hdrMode = colorspace == WMTColorSpaceHDR_scRGB ? NV_HDR_MODE_UHDA
                               : colorspace == WMTColorSpaceHDR_PQ  ? NV_HDR_MODE_UHDA_PASSTHROUGH
                                                                    : NV_HDR_MODE_OFF;
      pHdrColorData->mastering_display_data.displayPrimary_x0 = metadata.red_primary[0];
      pHdrColorData->mastering_display_data.displayPrimary_y0 = metadata.red_primary[1];
      pHdrColorData->mastering_display_data.displayPrimary_x1 = metadata.green_primary[0];
      pHdrColorData->mastering_display_data.displayPrimary_y1 = metadata.green_primary[1];
      pHdrColorData->mastering_display_data.displayPrimary_x2 = metadata.blue_primary[0];
      pHdrColorData->mastering_display_data.displayPrimary_y2 = metadata.blue_primary[1];
      pHdrColorData->mastering_display_data.displayWhitePoint_x = metadata.white_point[0];
      pHdrColorData->mastering_display_data.displayWhitePoint_y = metadata.white_point[1];
      pHdrColorData->mastering_display_data.max_display_mastering_luminance = metadata.max_mastering_luminance;
      pHdrColorData->mastering_display_data.min_display_mastering_luminance = metadata.min_mastering_luminance;
      pHdrColorData->mastering_display_data.max_content_light_level = metadata.max_content_light_level;
      pHdrColorData->mastering_display_data.max_frame_average_light_level = metadata.max_frame_average_light_level;
    } else {
      WMTDisplayDescription desc;
      WMTGetDisplayDescription(displayId, &desc);
      pHdrColorData->hdrMode = NV_HDR_MODE_OFF;
      pHdrColorData->mastering_display_data.displayPrimary_x0 = desc.red_primaries[0] * 50000;
      pHdrColorData->mastering_display_data.displayPrimary_y0 = desc.red_primaries[1] * 50000;
      pHdrColorData->mastering_display_data.displayPrimary_x1 = desc.green_primaries[0] * 50000;
      pHdrColorData->mastering_display_data.displayPrimary_y1 = desc.green_primaries[1] * 50000;
      pHdrColorData->mastering_display_data.displayPrimary_x2 = desc.blue_primaries[0] * 50000;
      pHdrColorData->mastering_display_data.displayPrimary_y2 = desc.blue_primaries[1] * 50000;
      pHdrColorData->mastering_display_data.displayWhitePoint_x = desc.white_points[0] * 50000;
      pHdrColorData->mastering_display_data.displayWhitePoint_y = desc.white_points[1] * 50000;
      pHdrColorData->mastering_display_data.max_display_mastering_luminance =
          desc.maximum_potential_edr_color_component_value * 100;
      pHdrColorData->mastering_display_data.min_display_mastering_luminance = 1;
      pHdrColorData->mastering_display_data.max_content_light_level =
          desc.maximum_potential_edr_color_component_value * 100;
      pHdrColorData->mastering_display_data.max_frame_average_light_level =
          desc.maximum_potential_edr_color_component_value * 100;
    }
  } else {
    if (pHdrColorData->hdrMode != NV_HDR_MODE_OFF) {
      metadata.red_primary[0] = pHdrColorData->mastering_display_data.displayPrimary_x0;
      metadata.red_primary[1] = pHdrColorData->mastering_display_data.displayPrimary_y0;
      metadata.green_primary[0] = pHdrColorData->mastering_display_data.displayPrimary_x1;
      metadata.green_primary[1] = pHdrColorData->mastering_display_data.displayPrimary_y1;
      metadata.blue_primary[0] = pHdrColorData->mastering_display_data.displayPrimary_x2;
      metadata.blue_primary[1] = pHdrColorData->mastering_display_data.displayPrimary_y2;