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Bug 753010 - Part 2 - Refactor some neon intrinsic functions for blur. r=mstange

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This commit is contained in:
Ethan Lin 2015-01-22 18:57:00 +01:00
parent fd482b12ca
commit f6894fe541
1 changed files with 18 additions and 22 deletions
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40
gfx/2d/BlurNEON.cpp
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@ -3,26 +3,25 @@
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "Blur.h"
#include <arm_neon.h>
namespace mozilla {
namespace gfx {
MOZ_ALWAYS_INLINE
uint32x4_t Divide(uint32x4_t aValues, uint32x4_t aDivisor)
uint16x4_t Divide(uint32x4_t aValues, uint32x2_t aDivisor)
{
uint64x2_t roundingAddition = vdupq_n_u64(int64_t(1) << 31);
uint64x2_t multiplied21 = vmull_u32(vget_low_u32(aValues), vget_low_u32(aDivisor));
uint64x2_t multiplied43 = vmull_u32(vget_high_u32(aValues), vget_high_u32(aDivisor));
return vcombine_u32(vshrn_n_u64(vaddq_u64(multiplied21, roundingAddition), 32),
vshrn_n_u64(vaddq_u64(multiplied43, roundingAddition), 32));
uint64x2_t multiplied21 = vmull_u32(vget_low_u32(aValues), aDivisor);
uint64x2_t multiplied43 = vmull_u32(vget_high_u32(aValues), aDivisor);
return vqmovn_u32(vcombine_u32(vshrn_n_u64(vaddq_u64(multiplied21, roundingAddition), 32),
vshrn_n_u64(vaddq_u64(multiplied43, roundingAddition), 32)));
}
MOZ_ALWAYS_INLINE
uint32x4_t BlurFourPixels(const uint32x4_t& aTopLeft, const uint32x4_t& aTopRight,
const uint32x4_t& aBottomRight, const uint32x4_t& aBottomLeft,
const uint32x4_t& aDivisor)
uint16x4_t BlurFourPixels(const uint32x4_t& aTopLeft, const uint32x4_t& aTopRight,
const uint32x4_t& aBottomRight, const uint32x4_t& aBottomLeft,
const uint32x2_t& aDivisor)
{
uint32x4_t values = vaddq_u32(vsubq_u32(vsubq_u32(aBottomRight, aTopRight), aBottomLeft), aTopLeft);
return Divide(values, aDivisor);
@ -202,7 +201,7 @@ AlphaBoxBlur::BoxBlur_NEON(uint8_t* aData,
aIntegralImage, aIntegralImageStride, aData,
mStride, size);
uint32x4_t divisor = vdupq_n_u32(reciprocal);
uint32x2_t divisor = vdup_n_u32(reciprocal);
// This points to the start of the rectangle within the IntegralImage that overlaps
// the surface being blurred.
@ -237,28 +236,28 @@ AlphaBoxBlur::BoxBlur_NEON(uint8_t* aData,
topRight = vld1q_u32(topRightBase + x);
bottomRight = vld1q_u32(bottomRightBase + x);
bottomLeft = vld1q_u32(bottomLeftBase + x);
uint32x4_t result1 = BlurFourPixels(topLeft, topRight, bottomRight, bottomLeft, divisor);
uint16x4_t result1 = BlurFourPixels(topLeft, topRight, bottomRight, bottomLeft, divisor);
topLeft = vld1q_u32(topLeftBase + x + 4);
topRight = vld1q_u32(topRightBase + x + 4);
bottomRight = vld1q_u32(bottomRightBase + x + 4);
bottomLeft = vld1q_u32(bottomLeftBase + x + 4);
uint32x4_t result2 = BlurFourPixels(topLeft, topRight, bottomRight, bottomLeft, divisor);
uint16x4_t result2 = BlurFourPixels(topLeft, topRight, bottomRight, bottomLeft, divisor);
topLeft = vld1q_u32(topLeftBase + x + 8);
topRight = vld1q_u32(topRightBase + x + 8);
bottomRight = vld1q_u32(bottomRightBase + x + 8);
bottomLeft = vld1q_u32(bottomLeftBase + x + 8);
uint32x4_t result3 = BlurFourPixels(topLeft, topRight, bottomRight, bottomLeft, divisor);
uint16x4_t result3 = BlurFourPixels(topLeft, topRight, bottomRight, bottomLeft, divisor);
topLeft = vld1q_u32(topLeftBase + x + 12);
topRight = vld1q_u32(topRightBase + x + 12);
bottomRight = vld1q_u32(bottomRightBase + x + 12);
bottomLeft = vld1q_u32(bottomLeftBase + x + 12);
uint32x4_t result4 = BlurFourPixels(topLeft, topRight, bottomRight, bottomLeft, divisor);
uint16x4_t result4 = BlurFourPixels(topLeft, topRight, bottomRight, bottomLeft, divisor);
uint8x8_t combine1 = vqmovn_u16(vcombine_u16(vqmovn_u32(result1), vqmovn_u32(result2)));
uint8x8_t combine2 = vqmovn_u16(vcombine_u16(vqmovn_u32(result3), vqmovn_u32(result4)));
uint8x8_t combine1 = vqmovn_u16(vcombine_u16(result1, result2));
uint8x8_t combine2 = vqmovn_u16(vcombine_u16(result3, result4));
uint8x16_t final = vcombine_u8(combine1, combine2);
vst1q_u8(data + stride * y + x, final);
}
@ -277,12 +276,9 @@ AlphaBoxBlur::BoxBlur_NEON(uint8_t* aData,
uint32x4_t topRight = vld1q_u32(topRightBase + x);
uint32x4_t bottomRight = vld1q_u32(bottomRightBase + x);
uint32x4_t bottomLeft = vld1q_u32(bottomLeftBase + x);
uint32x4_t result = BlurFourPixels(topLeft, topRight, bottomRight, bottomLeft, divisor);
uint8x8_t final = vqmovn_u16(vcombine_u16(vqmovn_u32(result), vdup_n_u16(0)));
vst1_lane_u8(data + stride * y + x , final, 0);
vst1_lane_u8(data + stride * y + x + 1, final, 1);
vst1_lane_u8(data + stride * y + x + 2, final, 2);
vst1_lane_u8(data + stride * y + x + 3, final, 3);
uint16x4_t result = BlurFourPixels(topLeft, topRight, bottomRight, bottomLeft, divisor);
uint32x2_t final = vreinterpret_u32_u8(vmovn_u16(vcombine_u16(result, vdup_n_u16(0))));
*(uint32_t*)(data + stride * y + x) = vget_lane_u32(final, 0);
}
}
}