Emilio Cobos Álvarez
02d691fdef
Autogenerated with:
cp dom/.clang-format gfx/ && mach format gfx/**.{cpp,h,mm}
Manual changes:
* OSVRSession headers are not system headers and they are not
standalone / rely on stdint, so tweaked to preserve previous
ordering.
* Missing include in GLDefs.h
* Missing include in gfxOTSUtils.
* Need to keep the windows header order in DCLayerTree.
* missing hb_font include in MockScaledFont.h
Differential Revision: https://phabricator.services.mozilla.com/D311695
88 lines
3.1 KiB
C++
88 lines
3.1 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "LuminanceNEON.h"
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#include <arm_neon.h>
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using namespace mozilla::gfx;
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/**
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* Byte offsets of channels in a native packed gfxColor or cairo image surface.
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*/
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#ifdef IS_BIG_ENDIAN
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# define GFX_ARGB32_OFFSET_A 0
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# define GFX_ARGB32_OFFSET_R 1
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# define GFX_ARGB32_OFFSET_G 2
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# define GFX_ARGB32_OFFSET_B 3
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#else
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# define GFX_ARGB32_OFFSET_A 3
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# define GFX_ARGB32_OFFSET_R 2
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# define GFX_ARGB32_OFFSET_G 1
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# define GFX_ARGB32_OFFSET_B 0
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#endif
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void ComputesRGBLuminanceMask_NEON(const uint8_t* aSourceData,
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int32_t aSourceStride, uint8_t* aDestData,
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int32_t aDestStride, const IntSize& aSize,
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float aOpacity) {
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int32_t redFactor = 55 * aOpacity; // 255 * 0.2125 * opacity
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int32_t greenFactor = 183 * aOpacity; // 255 * 0.7154 * opacity
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int32_t blueFactor = 18 * aOpacity; // 255 * 0.0721
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const uint8_t* sourcePixel = aSourceData;
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int32_t sourceOffset = aSourceStride - 4 * aSize.width;
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uint8_t* destPixel = aDestData;
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int32_t destOffset = aDestStride - aSize.width;
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sourcePixel = aSourceData;
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int32_t remainderWidth = aSize.width % 8;
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int32_t roundedWidth = aSize.width - remainderWidth;
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uint16x8_t temp;
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uint8x8_t gray;
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uint8x8_t redVector = vdup_n_u8(redFactor);
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uint8x8_t greenVector = vdup_n_u8(greenFactor);
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uint8x8_t blueVector = vdup_n_u8(blueFactor);
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uint8x8_t fullBitVector = vdup_n_u8(255);
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uint8x8_t oneVector = vdup_n_u8(1);
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for (int32_t y = 0; y < aSize.height; y++) {
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// Calculate luminance by neon with 8 pixels per loop
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for (int32_t x = 0; x < roundedWidth; x += 8) {
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uint8x8x4_t argb = vld4_u8(sourcePixel);
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temp = vmull_u8(argb.val[GFX_ARGB32_OFFSET_R],
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redVector); // temp = red * redFactor
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temp = vmlal_u8(temp, argb.val[GFX_ARGB32_OFFSET_G],
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greenVector); // temp += green * greenFactor
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temp = vmlal_u8(temp, argb.val[GFX_ARGB32_OFFSET_B],
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blueVector); // temp += blue * blueFactor
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gray = vshrn_n_u16(temp, 8); // gray = temp >> 8
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// Check alpha value
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uint8x8_t alphaVector =
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vtst_u8(argb.val[GFX_ARGB32_OFFSET_A], fullBitVector);
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gray = vmul_u8(gray, vand_u8(alphaVector, oneVector));
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// Put the result to the 8 pixels
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vst1_u8(destPixel, gray);
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sourcePixel += 8 * 4;
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destPixel += 8;
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}
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// Calculate the rest pixels of the line by cpu
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for (int32_t x = 0; x < remainderWidth; x++) {
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if (sourcePixel[GFX_ARGB32_OFFSET_A] > 0) {
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*destPixel = (redFactor * sourcePixel[GFX_ARGB32_OFFSET_R] +
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greenFactor * sourcePixel[GFX_ARGB32_OFFSET_G] +
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blueFactor * sourcePixel[GFX_ARGB32_OFFSET_B]) >>
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8;
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} else {
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*destPixel = 0;
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}
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sourcePixel += 4;
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destPixel++;
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}
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sourcePixel += sourceOffset;
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destPixel += destOffset;
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}
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}
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