loadAndScaleRGBW()

void fl::PixelIterator::loadAndScaleRGBW ( u8 * b0_out, u8 * b1_out, u8 * b2_out, u8 * w_out )

inline

Definition at line 337 of file pixel_iterator.h.

                                                                                      {
      if (mLoadRawPremixed != nullptr) {
        // Type-erased RGBW: the conversion is installed by active Rgbw
        // construction / setRgbw(), so RGB-only programs never link it
        // (#4795). Cached at construction (the Rgbw already exists then).
        u8 raw[3];
        u8 premix[3];
        mLoadRawPremixed(mPixelController, raw, premix);
        if (mRgbwConvert != nullptr) {
          mRgbwConvert(mRgbw, raw, premix, mWireOrder, b0_out, b1_out, b2_out, w_out);
          return;
        }
        // Not installed: only an inactive Rgbw can reach here. Exactly what
        // rgb_2_rgbw(kRGBWInvalid) produced: premix-scaled RGB, white off,
        // then the W placement.
        u8 c[3];
        u8 w = 0;
        rgb_2_rgbw_null_white_pixel(mRgbw.white_color_temp, raw[0], raw[1], raw[2],
                                    premix[0], premix[1], premix[2],
                                    &c[0], &c[1], &c[2], &w);
        rgbw_partial_reorder(mRgbw.w_placement, c[mWireOrder[0]], c[mWireOrder[1]],
                             c[mWireOrder[2]], w, b0_out, b1_out, b2_out, w_out);
        return;
      }
#if defined(FL_IS_AVR)
      // AVR keeps the order-free thunk (no type-erased conversion there).
      if (mLoadAndScaleRGBWUnordered != nullptr) {
        // Source-order RGB plus W, then the same two steps the templated
        // `loadAndScaleRGBW` takes: permute RGB, place W.
        u8 c[3];
        u8 w = 0;
        mLoadAndScaleRGBWUnordered(mPixelController, mRgbw, &c[0], &c[1], &c[2], &w);
        rgbw_partial_reorder(mRgbw.w_placement, c[mOrder[0]], c[mOrder[1]], c[mOrder[2]], w,
                             b0_out, b1_out, b2_out, w_out);
        return;
      }
#endif
      mLoadAndScaleRGBW(mPixelController, mRgbw, b0_out, b1_out, b2_out, w_out);
    }

References fl::FL_NO_EXCEPT, mLoadAndScaleRGBW, mLoadAndScaleRGBWUnordered, mLoadRawPremixed, mOrder, mPixelController, mRgbw, mRgbwConvert, mWireOrder, fl::rgb_2_rgbw_null_white_pixel(), and fl::rgbw_partial_reorder().

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