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/*
* Copyright 2015 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkBlitMask.h"
#include "SkColor_opts_neon.h"
static void D32_A8_Black_neon(void* SK_RESTRICT dst, size_t dstRB,
const void* SK_RESTRICT maskPtr, size_t maskRB,
SkColor, int width, int height) {
SkPMColor* SK_RESTRICT device = (SkPMColor*)dst;
const uint8_t* SK_RESTRICT mask = (const uint8_t*)maskPtr;
maskRB -= width;
dstRB -= (width << 2);
do {
int w = width;
while (w >= 8) {
uint8x8_t vmask = vld1_u8(mask);
uint16x8_t vscale = vsubw_u8(vdupq_n_u16(256), vmask);
uint8x8x4_t vdevice = vld4_u8((uint8_t*)device);
vdevice = SkAlphaMulQ_neon8(vdevice, vscale);
vdevice.val[NEON_A] += vmask;
vst4_u8((uint8_t*)device, vdevice);
mask += 8;
device += 8;
w -= 8;
}
while (w-- > 0) {
unsigned aa = *mask++;
*device = (aa << SK_A32_SHIFT)
+ SkAlphaMulQ(*device, SkAlpha255To256(255 - aa));
device += 1;
};
device = (uint32_t*)((char*)device + dstRB);
mask += maskRB;
} while (--height != 0);
}
template <bool isColor>
static void D32_A8_Opaque_Color_neon(void* SK_RESTRICT dst, size_t dstRB,
const void* SK_RESTRICT maskPtr, size_t maskRB,
SkColor color, int width, int height) {
SkPMColor pmc = SkPreMultiplyColor(color);
SkPMColor* SK_RESTRICT device = (SkPMColor*)dst;
const uint8_t* SK_RESTRICT mask = (const uint8_t*)maskPtr;
uint8x8x4_t vpmc;
maskRB -= width;
dstRB -= (width << 2);
if (width >= 8) {
vpmc.val[NEON_A] = vdup_n_u8(SkGetPackedA32(pmc));
vpmc.val[NEON_R] = vdup_n_u8(SkGetPackedR32(pmc));
vpmc.val[NEON_G] = vdup_n_u8(SkGetPackedG32(pmc));
vpmc.val[NEON_B] = vdup_n_u8(SkGetPackedB32(pmc));
}
do {
int w = width;
while (w >= 8) {
uint8x8_t vmask = vld1_u8(mask);
uint16x8_t vscale, vmask256 = SkAlpha255To256_neon8(vmask);
if (isColor) {
vscale = vsubw_u8(vdupq_n_u16(256),
SkAlphaMul_neon8(vpmc.val[NEON_A], vmask256));
} else {
vscale = vsubw_u8(vdupq_n_u16(256), vmask);
}
uint8x8x4_t vdev = vld4_u8((uint8_t*)device);
vdev.val[NEON_A] = SkAlphaMul_neon8(vpmc.val[NEON_A], vmask256)
+ SkAlphaMul_neon8(vdev.val[NEON_A], vscale);
vdev.val[NEON_R] = SkAlphaMul_neon8(vpmc.val[NEON_R], vmask256)
+ SkAlphaMul_neon8(vdev.val[NEON_R], vscale);
vdev.val[NEON_G] = SkAlphaMul_neon8(vpmc.val[NEON_G], vmask256)
+ SkAlphaMul_neon8(vdev.val[NEON_G], vscale);
vdev.val[NEON_B] = SkAlphaMul_neon8(vpmc.val[NEON_B], vmask256)
+ SkAlphaMul_neon8(vdev.val[NEON_B], vscale);
vst4_u8((uint8_t*)device, vdev);
mask += 8;
device += 8;
w -= 8;
}
while (w--) {
unsigned aa = *mask++;
if (isColor) {
*device = SkBlendARGB32(pmc, *device, aa);
} else {
*device = SkAlphaMulQ(pmc, SkAlpha255To256(aa))
+ SkAlphaMulQ(*device, SkAlpha255To256(255 - aa));
}
device += 1;
};
device = (uint32_t*)((char*)device + dstRB);
mask += maskRB;
} while (--height != 0);
}
static void D32_A8_Opaque_neon(void* SK_RESTRICT dst, size_t dstRB,
const void* SK_RESTRICT maskPtr, size_t maskRB,
SkColor color, int width, int height) {
D32_A8_Opaque_Color_neon<false>(dst, dstRB, maskPtr, maskRB, color, width, height);
}
static void D32_A8_Color_neon(void* SK_RESTRICT dst, size_t dstRB,
const void* SK_RESTRICT maskPtr, size_t maskRB,
SkColor color, int width, int height) {
D32_A8_Opaque_Color_neon<true>(dst, dstRB, maskPtr, maskRB, color, width, height);
}
SkBlitMask::ColorProc D32_A8_Factory_neon(SkColor color) {
if (SK_ColorBLACK == color) {
return D32_A8_Black_neon;
} else if (0xFF == SkColorGetA(color)) {
return D32_A8_Opaque_neon;
} else {
return D32_A8_Color_neon;
}
}
////////////////////////////////////////////////////////////////////////////////
void SkBlitLCD16OpaqueRow_neon(SkPMColor dst[], const uint16_t src[],
SkColor color, int width,
SkPMColor opaqueDst) {
int colR = SkColorGetR(color);
int colG = SkColorGetG(color);
int colB = SkColorGetB(color);
uint8x8_t vcolR, vcolG, vcolB;
uint8x8_t vopqDstA, vopqDstR, vopqDstG, vopqDstB;
if (width >= 8) {
vcolR = vdup_n_u8(colR);
vcolG = vdup_n_u8(colG);
vcolB = vdup_n_u8(colB);
vopqDstA = vdup_n_u8(SkGetPackedA32(opaqueDst));
vopqDstR = vdup_n_u8(SkGetPackedR32(opaqueDst));
vopqDstG = vdup_n_u8(SkGetPackedG32(opaqueDst));
vopqDstB = vdup_n_u8(SkGetPackedB32(opaqueDst));
}
while (width >= 8) {
uint8x8x4_t vdst;
uint16x8_t vmask;
uint16x8_t vmaskR, vmaskG, vmaskB;
uint8x8_t vsel_trans, vsel_opq;
vdst = vld4_u8((uint8_t*)dst);
vmask = vld1q_u16(src);
// Prepare compare masks
vsel_trans = vmovn_u16(vceqq_u16(vmask, vdupq_n_u16(0)));
vsel_opq = vmovn_u16(vceqq_u16(vmask, vdupq_n_u16(0xFFFF)));
// Get all the color masks on 5 bits
vmaskR = vshrq_n_u16(vmask, SK_R16_SHIFT);
vmaskG = vshrq_n_u16(vshlq_n_u16(vmask, SK_R16_BITS),
SK_B16_BITS + SK_R16_BITS + 1);
vmaskB = vmask & vdupq_n_u16(SK_B16_MASK);
// Upscale to 0..32
vmaskR = vmaskR + vshrq_n_u16(vmaskR, 4);
vmaskG = vmaskG + vshrq_n_u16(vmaskG, 4);
vmaskB = vmaskB + vshrq_n_u16(vmaskB, 4);
vdst.val[NEON_A] = vbsl_u8(vsel_trans, vdst.val[NEON_A], vdup_n_u8(0xFF));
vdst.val[NEON_A] = vbsl_u8(vsel_opq, vopqDstA, vdst.val[NEON_A]);
vdst.val[NEON_R] = SkBlend32_neon8(vcolR, vdst.val[NEON_R], vmaskR);
vdst.val[NEON_G] = SkBlend32_neon8(vcolG, vdst.val[NEON_G], vmaskG);
vdst.val[NEON_B] = SkBlend32_neon8(vcolB, vdst.val[NEON_B], vmaskB);
vdst.val[NEON_R] = vbsl_u8(vsel_opq, vopqDstR, vdst.val[NEON_R]);
vdst.val[NEON_G] = vbsl_u8(vsel_opq, vopqDstG, vdst.val[NEON_G]);
vdst.val[NEON_B] = vbsl_u8(vsel_opq, vopqDstB, vdst.val[NEON_B]);
vst4_u8((uint8_t*)dst, vdst);
dst += 8;
src += 8;
width -= 8;
}
// Leftovers
for (int i = 0; i < width; i++) {
dst[i] = SkBlendLCD16Opaque(colR, colG, colB, dst[i], src[i],
opaqueDst);
}
}
void SkBlitLCD16Row_neon(SkPMColor dst[], const uint16_t src[],
SkColor color, int width, SkPMColor) {
int colA = SkColorGetA(color);
int colR = SkColorGetR(color);
int colG = SkColorGetG(color);
int colB = SkColorGetB(color);
colA = SkAlpha255To256(colA);
uint8x8_t vcolR, vcolG, vcolB;
uint16x8_t vcolA;
if (width >= 8) {
vcolA = vdupq_n_u16(colA);
vcolR = vdup_n_u8(colR);
vcolG = vdup_n_u8(colG);
vcolB = vdup_n_u8(colB);
}
while (width >= 8) {
uint8x8x4_t vdst;
uint16x8_t vmask;
uint16x8_t vmaskR, vmaskG, vmaskB;
vdst = vld4_u8((uint8_t*)dst);
vmask = vld1q_u16(src);
// Get all the color masks on 5 bits
vmaskR = vshrq_n_u16(vmask, SK_R16_SHIFT);
vmaskG = vshrq_n_u16(vshlq_n_u16(vmask, SK_R16_BITS),
SK_B16_BITS + SK_R16_BITS + 1);
vmaskB = vmask & vdupq_n_u16(SK_B16_MASK);
// Upscale to 0..32
vmaskR = vmaskR + vshrq_n_u16(vmaskR, 4);
vmaskG = vmaskG + vshrq_n_u16(vmaskG, 4);
vmaskB = vmaskB + vshrq_n_u16(vmaskB, 4);
vmaskR = vshrq_n_u16(vmaskR * vcolA, 8);
vmaskG = vshrq_n_u16(vmaskG * vcolA, 8);
vmaskB = vshrq_n_u16(vmaskB * vcolA, 8);
vdst.val[NEON_A] = vdup_n_u8(0xFF);
vdst.val[NEON_R] = SkBlend32_neon8(vcolR, vdst.val[NEON_R], vmaskR);
vdst.val[NEON_G] = SkBlend32_neon8(vcolG, vdst.val[NEON_G], vmaskG);
vdst.val[NEON_B] = SkBlend32_neon8(vcolB, vdst.val[NEON_B], vmaskB);
vst4_u8((uint8_t*)dst, vdst);
dst += 8;
src += 8;
width -= 8;
}
for (int i = 0; i < width; i++) {
dst[i] = SkBlendLCD16(colA, colR, colG, colB, dst[i], src[i]);
}
}
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