| /* |
| * Copyright 2012 The Android Open Source Project |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| |
| #include "SkBlitRow_opts_SSE2.h" |
| #include "SkBitmapProcState_opts_SSE2.h" |
| #include "SkColorPriv.h" |
| #include "SkUtils.h" |
| |
| #include <emmintrin.h> |
| |
| /* SSE2 version of S32_Blend_BlitRow32() |
| * portable version is in core/SkBlitRow_D32.cpp |
| */ |
| void S32_Blend_BlitRow32_SSE2(SkPMColor* SK_RESTRICT dst, |
| const SkPMColor* SK_RESTRICT src, |
| int count, U8CPU alpha) { |
| SkASSERT(alpha <= 255); |
| if (count <= 0) { |
| return; |
| } |
| |
| uint32_t src_scale = SkAlpha255To256(alpha); |
| uint32_t dst_scale = 256 - src_scale; |
| |
| if (count >= 4) { |
| SkASSERT(((size_t)dst & 0x03) == 0); |
| while (((size_t)dst & 0x0F) != 0) { |
| *dst = SkAlphaMulQ(*src, src_scale) + SkAlphaMulQ(*dst, dst_scale); |
| src++; |
| dst++; |
| count--; |
| } |
| |
| const __m128i *s = reinterpret_cast<const __m128i*>(src); |
| __m128i *d = reinterpret_cast<__m128i*>(dst); |
| __m128i rb_mask = _mm_set1_epi32(0x00FF00FF); |
| __m128i ag_mask = _mm_set1_epi32(0xFF00FF00); |
| |
| // Move scale factors to upper byte of word |
| __m128i src_scale_wide = _mm_set1_epi16(src_scale << 8); |
| __m128i dst_scale_wide = _mm_set1_epi16(dst_scale << 8); |
| while (count >= 4) { |
| // Load 4 pixels each of src and dest. |
| __m128i src_pixel = _mm_loadu_si128(s); |
| __m128i dst_pixel = _mm_load_si128(d); |
| |
| // Interleave Atom port 0/1 operations based on the execution port |
| // constraints that multiply can only be executed on port 0 (while |
| // boolean operations can be executed on either port 0 or port 1) |
| // because GCC currently doesn't do a good job scheduling |
| // instructions based on these constraints. |
| |
| // Get red and blue pixels into lower byte of each word. |
| // (0, r, 0, b, 0, r, 0, b, 0, r, 0, b, 0, r, 0, b) |
| __m128i src_rb = _mm_and_si128(rb_mask, src_pixel); |
| |
| // Multiply by scale. |
| // (4 x (0, rs.h, 0, bs.h)) |
| // where rs.h stands for the higher byte of r * scale, and |
| // bs.h the higher byte of b * scale. |
| src_rb = _mm_mulhi_epu16(src_rb, src_scale_wide); |
| |
| // Get alpha and green pixels into higher byte of each word. |
| // (a, 0, g, 0, a, 0, g, 0, a, 0, g, 0, a, 0, g, 0) |
| __m128i src_ag = _mm_and_si128(ag_mask, src_pixel); |
| |
| // Multiply by scale. |
| // (4 x (as.h, as.l, gs.h, gs.l)) |
| src_ag = _mm_mulhi_epu16(src_ag, src_scale_wide); |
| |
| // Clear the lower byte of the a*scale and g*scale results |
| // (4 x (as.h, 0, gs.h, 0)) |
| src_ag = _mm_and_si128(src_ag, ag_mask); |
| |
| // Operations the destination pixels are the same as on the |
| // source pixels. See the comments above. |
| __m128i dst_rb = _mm_and_si128(rb_mask, dst_pixel); |
| dst_rb = _mm_mulhi_epu16(dst_rb, dst_scale_wide); |
| __m128i dst_ag = _mm_and_si128(ag_mask, dst_pixel); |
| dst_ag = _mm_mulhi_epu16(dst_ag, dst_scale_wide); |
| dst_ag = _mm_and_si128(dst_ag, ag_mask); |
| |
| // Combine back into RGBA. |
| // (4 x (as.h, rs.h, gs.h, bs.h)) |
| src_pixel = _mm_or_si128(src_rb, src_ag); |
| dst_pixel = _mm_or_si128(dst_rb, dst_ag); |
| |
| // Add result |
| __m128i result = _mm_add_epi8(src_pixel, dst_pixel); |
| _mm_store_si128(d, result); |
| s++; |
| d++; |
| count -= 4; |
| } |
| src = reinterpret_cast<const SkPMColor*>(s); |
| dst = reinterpret_cast<SkPMColor*>(d); |
| } |
| |
| while (count > 0) { |
| *dst = SkAlphaMulQ(*src, src_scale) + SkAlphaMulQ(*dst, dst_scale); |
| src++; |
| dst++; |
| count--; |
| } |
| } |
| |
| void S32A_Opaque_BlitRow32_SSE2(SkPMColor* SK_RESTRICT dst, |
| const SkPMColor* SK_RESTRICT src, |
| int count, U8CPU alpha) { |
| SkASSERT(alpha == 255); |
| if (count <= 0) { |
| return; |
| } |
| |
| if (count >= 4) { |
| SkASSERT(((size_t)dst & 0x03) == 0); |
| while (((size_t)dst & 0x0F) != 0) { |
| *dst = SkPMSrcOver(*src, *dst); |
| src++; |
| dst++; |
| count--; |
| } |
| |
| const __m128i *s = reinterpret_cast<const __m128i*>(src); |
| __m128i *d = reinterpret_cast<__m128i*>(dst); |
| #ifdef SK_USE_ACCURATE_BLENDING |
| __m128i rb_mask = _mm_set1_epi32(0x00FF00FF); |
| __m128i c_128 = _mm_set1_epi16(128); // 8 copies of 128 (16-bit) |
| __m128i c_255 = _mm_set1_epi16(255); // 8 copies of 255 (16-bit) |
| while (count >= 4) { |
| // Load 4 pixels |
| __m128i src_pixel = _mm_loadu_si128(s); |
| __m128i dst_pixel = _mm_load_si128(d); |
| |
| __m128i dst_rb = _mm_and_si128(rb_mask, dst_pixel); |
| __m128i dst_ag = _mm_srli_epi16(dst_pixel, 8); |
| // Shift alphas down to lower 8 bits of each quad. |
| __m128i alpha = _mm_srli_epi32(src_pixel, 24); |
| |
| // Copy alpha to upper 3rd byte of each quad |
| alpha = _mm_or_si128(alpha, _mm_slli_epi32(alpha, 16)); |
| |
| // Subtract alphas from 255, to get 0..255 |
| alpha = _mm_sub_epi16(c_255, alpha); |
| |
| // Multiply by red and blue by src alpha. |
| dst_rb = _mm_mullo_epi16(dst_rb, alpha); |
| // Multiply by alpha and green by src alpha. |
| dst_ag = _mm_mullo_epi16(dst_ag, alpha); |
| |
| // dst_rb_low = (dst_rb >> 8) |
| __m128i dst_rb_low = _mm_srli_epi16(dst_rb, 8); |
| __m128i dst_ag_low = _mm_srli_epi16(dst_ag, 8); |
| |
| // dst_rb = (dst_rb + dst_rb_low + 128) >> 8 |
| dst_rb = _mm_add_epi16(dst_rb, dst_rb_low); |
| dst_rb = _mm_add_epi16(dst_rb, c_128); |
| dst_rb = _mm_srli_epi16(dst_rb, 8); |
| |
| // dst_ag = (dst_ag + dst_ag_low + 128) & ag_mask |
| dst_ag = _mm_add_epi16(dst_ag, dst_ag_low); |
| dst_ag = _mm_add_epi16(dst_ag, c_128); |
| dst_ag = _mm_andnot_si128(rb_mask, dst_ag); |
| |
| // Combine back into RGBA. |
| dst_pixel = _mm_or_si128(dst_rb, dst_ag); |
| |
| // Add result |
| __m128i result = _mm_add_epi8(src_pixel, dst_pixel); |
| _mm_store_si128(d, result); |
| s++; |
| d++; |
| count -= 4; |
| } |
| #else |
| __m128i rb_mask = _mm_set1_epi32(0x00FF00FF); |
| __m128i c_256 = _mm_set1_epi16(0x0100); // 8 copies of 256 (16-bit) |
| while (count >= 4) { |
| // Load 4 pixels |
| __m128i src_pixel = _mm_loadu_si128(s); |
| __m128i dst_pixel = _mm_load_si128(d); |
| |
| __m128i dst_rb = _mm_and_si128(rb_mask, dst_pixel); |
| __m128i dst_ag = _mm_srli_epi16(dst_pixel, 8); |
| |
| // (a0, g0, a1, g1, a2, g2, a3, g3) (low byte of each word) |
| __m128i alpha = _mm_srli_epi16(src_pixel, 8); |
| |
| // (a0, a0, a1, a1, a2, g2, a3, g3) |
| alpha = _mm_shufflehi_epi16(alpha, 0xF5); |
| |
| // (a0, a0, a1, a1, a2, a2, a3, a3) |
| alpha = _mm_shufflelo_epi16(alpha, 0xF5); |
| |
| // Subtract alphas from 256, to get 1..256 |
| alpha = _mm_sub_epi16(c_256, alpha); |
| |
| // Multiply by red and blue by src alpha. |
| dst_rb = _mm_mullo_epi16(dst_rb, alpha); |
| // Multiply by alpha and green by src alpha. |
| dst_ag = _mm_mullo_epi16(dst_ag, alpha); |
| |
| // Divide by 256. |
| dst_rb = _mm_srli_epi16(dst_rb, 8); |
| |
| // Mask out high bits (already in the right place) |
| dst_ag = _mm_andnot_si128(rb_mask, dst_ag); |
| |
| // Combine back into RGBA. |
| dst_pixel = _mm_or_si128(dst_rb, dst_ag); |
| |
| // Add result |
| __m128i result = _mm_add_epi8(src_pixel, dst_pixel); |
| _mm_store_si128(d, result); |
| s++; |
| d++; |
| count -= 4; |
| } |
| #endif |
| src = reinterpret_cast<const SkPMColor*>(s); |
| dst = reinterpret_cast<SkPMColor*>(d); |
| } |
| |
| while (count > 0) { |
| *dst = SkPMSrcOver(*src, *dst); |
| src++; |
| dst++; |
| count--; |
| } |
| } |
| |
| void S32A_Blend_BlitRow32_SSE2(SkPMColor* SK_RESTRICT dst, |
| const SkPMColor* SK_RESTRICT src, |
| int count, U8CPU alpha) { |
| SkASSERT(alpha <= 255); |
| if (count <= 0) { |
| return; |
| } |
| |
| if (count >= 4) { |
| while (((size_t)dst & 0x0F) != 0) { |
| *dst = SkBlendARGB32(*src, *dst, alpha); |
| src++; |
| dst++; |
| count--; |
| } |
| |
| uint32_t src_scale = SkAlpha255To256(alpha); |
| |
| const __m128i *s = reinterpret_cast<const __m128i*>(src); |
| __m128i *d = reinterpret_cast<__m128i*>(dst); |
| __m128i src_scale_wide = _mm_set1_epi16(src_scale << 8); |
| __m128i rb_mask = _mm_set1_epi32(0x00FF00FF); |
| __m128i c_256 = _mm_set1_epi16(256); // 8 copies of 256 (16-bit) |
| while (count >= 4) { |
| // Load 4 pixels each of src and dest. |
| __m128i src_pixel = _mm_loadu_si128(s); |
| __m128i dst_pixel = _mm_load_si128(d); |
| |
| // Get red and blue pixels into lower byte of each word. |
| __m128i dst_rb = _mm_and_si128(rb_mask, dst_pixel); |
| __m128i src_rb = _mm_and_si128(rb_mask, src_pixel); |
| |
| // Get alpha and green into lower byte of each word. |
| __m128i dst_ag = _mm_srli_epi16(dst_pixel, 8); |
| __m128i src_ag = _mm_srli_epi16(src_pixel, 8); |
| |
| // Put per-pixel alpha in low byte of each word. |
| // After the following two statements, the dst_alpha looks like |
| // (0, a0, 0, a0, 0, a1, 0, a1, 0, a2, 0, a2, 0, a3, 0, a3) |
| __m128i dst_alpha = _mm_shufflehi_epi16(src_ag, 0xF5); |
| dst_alpha = _mm_shufflelo_epi16(dst_alpha, 0xF5); |
| |
| // dst_alpha = dst_alpha * src_scale |
| // Because src_scales are in the higher byte of each word and |
| // we use mulhi here, the resulting alpha values are already |
| // in the right place and don't need to be divided by 256. |
| // (0, sa0, 0, sa0, 0, sa1, 0, sa1, 0, sa2, 0, sa2, 0, sa3, 0, sa3) |
| dst_alpha = _mm_mulhi_epu16(dst_alpha, src_scale_wide); |
| |
| // Subtract alphas from 256, to get 1..256 |
| dst_alpha = _mm_sub_epi16(c_256, dst_alpha); |
| |
| // Multiply red and blue by dst pixel alpha. |
| dst_rb = _mm_mullo_epi16(dst_rb, dst_alpha); |
| // Multiply alpha and green by dst pixel alpha. |
| dst_ag = _mm_mullo_epi16(dst_ag, dst_alpha); |
| |
| // Multiply red and blue by global alpha. |
| // (4 x (0, rs.h, 0, bs.h)) |
| // where rs.h stands for the higher byte of r * src_scale, |
| // and bs.h the higher byte of b * src_scale. |
| // Again, because we use mulhi, the resuling red and blue |
| // values are already in the right place and don't need to |
| // be divided by 256. |
| src_rb = _mm_mulhi_epu16(src_rb, src_scale_wide); |
| // Multiply alpha and green by global alpha. |
| // (4 x (0, as.h, 0, gs.h)) |
| src_ag = _mm_mulhi_epu16(src_ag, src_scale_wide); |
| |
| // Divide by 256. |
| dst_rb = _mm_srli_epi16(dst_rb, 8); |
| |
| // Mask out low bits (goodies already in the right place; no need to divide) |
| dst_ag = _mm_andnot_si128(rb_mask, dst_ag); |
| // Shift alpha and green to higher byte of each word. |
| // (4 x (as.h, 0, gs.h, 0)) |
| src_ag = _mm_slli_epi16(src_ag, 8); |
| |
| // Combine back into RGBA. |
| dst_pixel = _mm_or_si128(dst_rb, dst_ag); |
| src_pixel = _mm_or_si128(src_rb, src_ag); |
| |
| // Add two pixels into result. |
| __m128i result = _mm_add_epi8(src_pixel, dst_pixel); |
| _mm_store_si128(d, result); |
| s++; |
| d++; |
| count -= 4; |
| } |
| src = reinterpret_cast<const SkPMColor*>(s); |
| dst = reinterpret_cast<SkPMColor*>(d); |
| } |
| |
| while (count > 0) { |
| *dst = SkBlendARGB32(*src, *dst, alpha); |
| src++; |
| dst++; |
| count--; |
| } |
| } |
| |
| /* SSE2 version of Color32() |
| * portable version is in core/SkBlitRow_D32.cpp |
| */ |
| void Color32_SSE2(SkPMColor dst[], const SkPMColor src[], int count, |
| SkPMColor color) { |
| |
| if (count <= 0) { |
| return; |
| } |
| |
| if (0 == color) { |
| if (src != dst) { |
| memcpy(dst, src, count * sizeof(SkPMColor)); |
| } |
| return; |
| } |
| |
| unsigned colorA = SkGetPackedA32(color); |
| if (255 == colorA) { |
| sk_memset32(dst, color, count); |
| } else { |
| unsigned scale = 256 - SkAlpha255To256(colorA); |
| |
| if (count >= 4) { |
| SkASSERT(((size_t)dst & 0x03) == 0); |
| while (((size_t)dst & 0x0F) != 0) { |
| *dst = color + SkAlphaMulQ(*src, scale); |
| src++; |
| dst++; |
| count--; |
| } |
| |
| const __m128i *s = reinterpret_cast<const __m128i*>(src); |
| __m128i *d = reinterpret_cast<__m128i*>(dst); |
| __m128i rb_mask = _mm_set1_epi32(0x00FF00FF); |
| __m128i src_scale_wide = _mm_set1_epi16(scale); |
| __m128i color_wide = _mm_set1_epi32(color); |
| while (count >= 4) { |
| // Load 4 pixels each of src and dest. |
| __m128i src_pixel = _mm_loadu_si128(s); |
| |
| // Get red and blue pixels into lower byte of each word. |
| __m128i src_rb = _mm_and_si128(rb_mask, src_pixel); |
| |
| // Get alpha and green into lower byte of each word. |
| __m128i src_ag = _mm_srli_epi16(src_pixel, 8); |
| |
| // Multiply by scale. |
| src_rb = _mm_mullo_epi16(src_rb, src_scale_wide); |
| src_ag = _mm_mullo_epi16(src_ag, src_scale_wide); |
| |
| // Divide by 256. |
| src_rb = _mm_srli_epi16(src_rb, 8); |
| src_ag = _mm_andnot_si128(rb_mask, src_ag); |
| |
| // Combine back into RGBA. |
| src_pixel = _mm_or_si128(src_rb, src_ag); |
| |
| // Add color to result. |
| __m128i result = _mm_add_epi8(color_wide, src_pixel); |
| |
| // Store result. |
| _mm_store_si128(d, result); |
| s++; |
| d++; |
| count -= 4; |
| } |
| src = reinterpret_cast<const SkPMColor*>(s); |
| dst = reinterpret_cast<SkPMColor*>(d); |
| } |
| |
| while (count > 0) { |
| *dst = color + SkAlphaMulQ(*src, scale); |
| src += 1; |
| dst += 1; |
| count--; |
| } |
| } |
| } |
| |
| void SkARGB32_A8_BlitMask_SSE2(void* device, size_t dstRB, const void* maskPtr, |
| size_t maskRB, SkColor origColor, |
| int width, int height) { |
| SkPMColor color = SkPreMultiplyColor(origColor); |
| size_t dstOffset = dstRB - (width << 2); |
| size_t maskOffset = maskRB - width; |
| SkPMColor* dst = (SkPMColor *)device; |
| const uint8_t* mask = (const uint8_t*)maskPtr; |
| do { |
| int count = width; |
| if (count >= 4) { |
| while (((size_t)dst & 0x0F) != 0 && (count > 0)) { |
| *dst = SkBlendARGB32(color, *dst, *mask); |
| mask++; |
| dst++; |
| count--; |
| } |
| __m128i *d = reinterpret_cast<__m128i*>(dst); |
| __m128i rb_mask = _mm_set1_epi32(0x00FF00FF); |
| __m128i c_256 = _mm_set1_epi16(256); |
| __m128i c_1 = _mm_set1_epi16(1); |
| __m128i src_pixel = _mm_set1_epi32(color); |
| while (count >= 4) { |
| // Load 4 pixels each of src and dest. |
| __m128i dst_pixel = _mm_load_si128(d); |
| |
| //set the aphla value |
| __m128i src_scale_wide = _mm_set_epi8(0, *(mask+3),\ |
| 0, *(mask+3),0, \ |
| *(mask+2),0, *(mask+2),\ |
| 0,*(mask+1), 0,*(mask+1),\ |
| 0, *mask,0,*mask); |
| |
| //call SkAlpha255To256() |
| src_scale_wide = _mm_add_epi16(src_scale_wide, c_1); |
| |
| // Get red and blue pixels into lower byte of each word. |
| __m128i dst_rb = _mm_and_si128(rb_mask, dst_pixel); |
| __m128i src_rb = _mm_and_si128(rb_mask, src_pixel); |
| |
| // Get alpha and green into lower byte of each word. |
| __m128i dst_ag = _mm_srli_epi16(dst_pixel, 8); |
| __m128i src_ag = _mm_srli_epi16(src_pixel, 8); |
| |
| // Put per-pixel alpha in low byte of each word. |
| __m128i dst_alpha = _mm_shufflehi_epi16(src_ag, 0xF5); |
| dst_alpha = _mm_shufflelo_epi16(dst_alpha, 0xF5); |
| |
| // dst_alpha = dst_alpha * src_scale |
| dst_alpha = _mm_mullo_epi16(dst_alpha, src_scale_wide); |
| |
| // Divide by 256. |
| dst_alpha = _mm_srli_epi16(dst_alpha, 8); |
| |
| // Subtract alphas from 256, to get 1..256 |
| dst_alpha = _mm_sub_epi16(c_256, dst_alpha); |
| // Multiply red and blue by dst pixel alpha. |
| dst_rb = _mm_mullo_epi16(dst_rb, dst_alpha); |
| // Multiply alpha and green by dst pixel alpha. |
| dst_ag = _mm_mullo_epi16(dst_ag, dst_alpha); |
| |
| // Multiply red and blue by global alpha. |
| src_rb = _mm_mullo_epi16(src_rb, src_scale_wide); |
| // Multiply alpha and green by global alpha. |
| src_ag = _mm_mullo_epi16(src_ag, src_scale_wide); |
| // Divide by 256. |
| dst_rb = _mm_srli_epi16(dst_rb, 8); |
| src_rb = _mm_srli_epi16(src_rb, 8); |
| |
| // Mask out low bits (goodies already in the right place; no need to divide) |
| dst_ag = _mm_andnot_si128(rb_mask, dst_ag); |
| src_ag = _mm_andnot_si128(rb_mask, src_ag); |
| |
| // Combine back into RGBA. |
| dst_pixel = _mm_or_si128(dst_rb, dst_ag); |
| __m128i tmp_src_pixel = _mm_or_si128(src_rb, src_ag); |
| |
| // Add two pixels into result. |
| __m128i result = _mm_add_epi8(tmp_src_pixel, dst_pixel); |
| _mm_store_si128(d, result); |
| // load the next 4 pixel |
| mask = mask + 4; |
| d++; |
| count -= 4; |
| } |
| dst = reinterpret_cast<SkPMColor *>(d); |
| } |
| while(count > 0) { |
| *dst= SkBlendARGB32(color, *dst, *mask); |
| dst += 1; |
| mask++; |
| count --; |
| } |
| dst = (SkPMColor *)((char*)dst + dstOffset); |
| mask += maskOffset; |
| } while (--height != 0); |
| } |
| |
| // The following (left) shifts cause the top 5 bits of the mask components to |
| // line up with the corresponding components in an SkPMColor. |
| // Note that the mask's RGB16 order may differ from the SkPMColor order. |
| #define SK_R16x5_R32x5_SHIFT (SK_R32_SHIFT - SK_R16_SHIFT - SK_R16_BITS + 5) |
| #define SK_G16x5_G32x5_SHIFT (SK_G32_SHIFT - SK_G16_SHIFT - SK_G16_BITS + 5) |
| #define SK_B16x5_B32x5_SHIFT (SK_B32_SHIFT - SK_B16_SHIFT - SK_B16_BITS + 5) |
| |
| #if SK_R16x5_R32x5_SHIFT == 0 |
| #define SkPackedR16x5ToUnmaskedR32x5_SSE2(x) (x) |
| #elif SK_R16x5_R32x5_SHIFT > 0 |
| #define SkPackedR16x5ToUnmaskedR32x5_SSE2(x) (_mm_slli_epi32(x, SK_R16x5_R32x5_SHIFT)) |
| #else |
| #define SkPackedR16x5ToUnmaskedR32x5_SSE2(x) (_mm_srli_epi32(x, -SK_R16x5_R32x5_SHIFT)) |
| #endif |
| |
| #if SK_G16x5_G32x5_SHIFT == 0 |
| #define SkPackedG16x5ToUnmaskedG32x5_SSE2(x) (x) |
| #elif SK_G16x5_G32x5_SHIFT > 0 |
| #define SkPackedG16x5ToUnmaskedG32x5_SSE2(x) (_mm_slli_epi32(x, SK_G16x5_G32x5_SHIFT)) |
| #else |
| #define SkPackedG16x5ToUnmaskedG32x5_SSE2(x) (_mm_srli_epi32(x, -SK_G16x5_G32x5_SHIFT)) |
| #endif |
| |
| #if SK_B16x5_B32x5_SHIFT == 0 |
| #define SkPackedB16x5ToUnmaskedB32x5_SSE2(x) (x) |
| #elif SK_B16x5_B32x5_SHIFT > 0 |
| #define SkPackedB16x5ToUnmaskedB32x5_SSE2(x) (_mm_slli_epi32(x, SK_B16x5_B32x5_SHIFT)) |
| #else |
| #define SkPackedB16x5ToUnmaskedB32x5_SSE2(x) (_mm_srli_epi32(x, -SK_B16x5_B32x5_SHIFT)) |
| #endif |
| |
| static __m128i SkBlendLCD16_SSE2(__m128i &src, __m128i &dst, |
| __m128i &mask, __m128i &srcA) { |
| // In the following comments, the components of src, dst and mask are |
| // abbreviated as (s)rc, (d)st, and (m)ask. Color components are marked |
| // by an R, G, B, or A suffix. Components of one of the four pixels that |
| // are processed in parallel are marked with 0, 1, 2, and 3. "d1B", for |
| // example is the blue channel of the second destination pixel. Memory |
| // layout is shown for an ARGB byte order in a color value. |
| |
| // src and srcA store 8-bit values interleaved with zeros. |
| // src = (0xFF, 0, sR, 0, sG, 0, sB, 0, 0xFF, 0, sR, 0, sG, 0, sB, 0) |
| // srcA = (srcA, 0, srcA, 0, srcA, 0, srcA, 0, |
| // srcA, 0, srcA, 0, srcA, 0, srcA, 0) |
| // mask stores 16-bit values (compressed three channels) interleaved with zeros. |
| // Lo and Hi denote the low and high bytes of a 16-bit value, respectively. |
| // mask = (m0RGBLo, m0RGBHi, 0, 0, m1RGBLo, m1RGBHi, 0, 0, |
| // m2RGBLo, m2RGBHi, 0, 0, m3RGBLo, m3RGBHi, 0, 0) |
| |
| // Get the R,G,B of each 16bit mask pixel, we want all of them in 5 bits. |
| // r = (0, m0R, 0, 0, 0, m1R, 0, 0, 0, m2R, 0, 0, 0, m3R, 0, 0) |
| __m128i r = _mm_and_si128(SkPackedR16x5ToUnmaskedR32x5_SSE2(mask), |
| _mm_set1_epi32(0x1F << SK_R32_SHIFT)); |
| |
| // g = (0, 0, m0G, 0, 0, 0, m1G, 0, 0, 0, m2G, 0, 0, 0, m3G, 0) |
| __m128i g = _mm_and_si128(SkPackedG16x5ToUnmaskedG32x5_SSE2(mask), |
| _mm_set1_epi32(0x1F << SK_G32_SHIFT)); |
| |
| // b = (0, 0, 0, m0B, 0, 0, 0, m1B, 0, 0, 0, m2B, 0, 0, 0, m3B) |
| __m128i b = _mm_and_si128(SkPackedB16x5ToUnmaskedB32x5_SSE2(mask), |
| _mm_set1_epi32(0x1F << SK_B32_SHIFT)); |
| |
| // Pack the 4 16bit mask pixels into 4 32bit pixels, (p0, p1, p2, p3) |
| // Each component (m0R, m0G, etc.) is then a 5-bit value aligned to an |
| // 8-bit position |
| // mask = (0, m0R, m0G, m0B, 0, m1R, m1G, m1B, |
| // 0, m2R, m2G, m2B, 0, m3R, m3G, m3B) |
| mask = _mm_or_si128(_mm_or_si128(r, g), b); |
| |
| // Interleave R,G,B into the lower byte of word. |
| // i.e. split the sixteen 8-bit values from mask into two sets of eight |
| // 16-bit values, padded by zero. |
| __m128i maskLo, maskHi; |
| // maskLo = (0, 0, m0R, 0, m0G, 0, m0B, 0, 0, 0, m1R, 0, m1G, 0, m1B, 0) |
| maskLo = _mm_unpacklo_epi8(mask, _mm_setzero_si128()); |
| // maskHi = (0, 0, m2R, 0, m2G, 0, m2B, 0, 0, 0, m3R, 0, m3G, 0, m3B, 0) |
| maskHi = _mm_unpackhi_epi8(mask, _mm_setzero_si128()); |
| |
| // Upscale from 0..31 to 0..32 |
| // (allows to replace division by left-shift further down) |
| // Left-shift each component by 4 and add the result back to that component, |
| // mapping numbers in the range 0..15 to 0..15, and 16..31 to 17..32 |
| maskLo = _mm_add_epi16(maskLo, _mm_srli_epi16(maskLo, 4)); |
| maskHi = _mm_add_epi16(maskHi, _mm_srli_epi16(maskHi, 4)); |
| |
| // Multiply each component of maskLo and maskHi by srcA |
| maskLo = _mm_mullo_epi16(maskLo, srcA); |
| maskHi = _mm_mullo_epi16(maskHi, srcA); |
| |
| // Left shift mask components by 8 (divide by 256) |
| maskLo = _mm_srli_epi16(maskLo, 8); |
| maskHi = _mm_srli_epi16(maskHi, 8); |
| |
| // Interleave R,G,B into the lower byte of the word |
| // dstLo = (0, 0, d0R, 0, d0G, 0, d0B, 0, 0, 0, d1R, 0, d1G, 0, d1B, 0) |
| __m128i dstLo = _mm_unpacklo_epi8(dst, _mm_setzero_si128()); |
| // dstLo = (0, 0, d2R, 0, d2G, 0, d2B, 0, 0, 0, d3R, 0, d3G, 0, d3B, 0) |
| __m128i dstHi = _mm_unpackhi_epi8(dst, _mm_setzero_si128()); |
| |
| // mask = (src - dst) * mask |
| maskLo = _mm_mullo_epi16(maskLo, _mm_sub_epi16(src, dstLo)); |
| maskHi = _mm_mullo_epi16(maskHi, _mm_sub_epi16(src, dstHi)); |
| |
| // mask = (src - dst) * mask >> 5 |
| maskLo = _mm_srai_epi16(maskLo, 5); |
| maskHi = _mm_srai_epi16(maskHi, 5); |
| |
| // Add two pixels into result. |
| // result = dst + ((src - dst) * mask >> 5) |
| __m128i resultLo = _mm_add_epi16(dstLo, maskLo); |
| __m128i resultHi = _mm_add_epi16(dstHi, maskHi); |
| |
| // Pack into 4 32bit dst pixels. |
| // resultLo and resultHi contain eight 16-bit components (two pixels) each. |
| // Merge into one SSE regsiter with sixteen 8-bit values (four pixels), |
| // clamping to 255 if necessary. |
| return _mm_packus_epi16(resultLo, resultHi); |
| } |
| |
| static __m128i SkBlendLCD16Opaque_SSE2(__m128i &src, __m128i &dst, |
| __m128i &mask) { |
| // In the following comments, the components of src, dst and mask are |
| // abbreviated as (s)rc, (d)st, and (m)ask. Color components are marked |
| // by an R, G, B, or A suffix. Components of one of the four pixels that |
| // are processed in parallel are marked with 0, 1, 2, and 3. "d1B", for |
| // example is the blue channel of the second destination pixel. Memory |
| // layout is shown for an ARGB byte order in a color value. |
| |
| // src and srcA store 8-bit values interleaved with zeros. |
| // src = (0xFF, 0, sR, 0, sG, 0, sB, 0, 0xFF, 0, sR, 0, sG, 0, sB, 0) |
| // mask stores 16-bit values (shown as high and low bytes) interleaved with |
| // zeros |
| // mask = (m0RGBLo, m0RGBHi, 0, 0, m1RGBLo, m1RGBHi, 0, 0, |
| // m2RGBLo, m2RGBHi, 0, 0, m3RGBLo, m3RGBHi, 0, 0) |
| |
| // Get the R,G,B of each 16bit mask pixel, we want all of them in 5 bits. |
| // r = (0, m0R, 0, 0, 0, m1R, 0, 0, 0, m2R, 0, 0, 0, m3R, 0, 0) |
| __m128i r = _mm_and_si128(SkPackedR16x5ToUnmaskedR32x5_SSE2(mask), |
| _mm_set1_epi32(0x1F << SK_R32_SHIFT)); |
| |
| // g = (0, 0, m0G, 0, 0, 0, m1G, 0, 0, 0, m2G, 0, 0, 0, m3G, 0) |
| __m128i g = _mm_and_si128(SkPackedG16x5ToUnmaskedG32x5_SSE2(mask), |
| _mm_set1_epi32(0x1F << SK_G32_SHIFT)); |
| |
| // b = (0, 0, 0, m0B, 0, 0, 0, m1B, 0, 0, 0, m2B, 0, 0, 0, m3B) |
| __m128i b = _mm_and_si128(SkPackedB16x5ToUnmaskedB32x5_SSE2(mask), |
| _mm_set1_epi32(0x1F << SK_B32_SHIFT)); |
| |
| // Pack the 4 16bit mask pixels into 4 32bit pixels, (p0, p1, p2, p3) |
| // Each component (m0R, m0G, etc.) is then a 5-bit value aligned to an |
| // 8-bit position |
| // mask = (0, m0R, m0G, m0B, 0, m1R, m1G, m1B, |
| // 0, m2R, m2G, m2B, 0, m3R, m3G, m3B) |
| mask = _mm_or_si128(_mm_or_si128(r, g), b); |
| |
| // Interleave R,G,B into the lower byte of word. |
| // i.e. split the sixteen 8-bit values from mask into two sets of eight |
| // 16-bit values, padded by zero. |
| __m128i maskLo, maskHi; |
| // maskLo = (0, 0, m0R, 0, m0G, 0, m0B, 0, 0, 0, m1R, 0, m1G, 0, m1B, 0) |
| maskLo = _mm_unpacklo_epi8(mask, _mm_setzero_si128()); |
| // maskHi = (0, 0, m2R, 0, m2G, 0, m2B, 0, 0, 0, m3R, 0, m3G, 0, m3B, 0) |
| maskHi = _mm_unpackhi_epi8(mask, _mm_setzero_si128()); |
| |
| // Upscale from 0..31 to 0..32 |
| // (allows to replace division by left-shift further down) |
| // Left-shift each component by 4 and add the result back to that component, |
| // mapping numbers in the range 0..15 to 0..15, and 16..31 to 17..32 |
| maskLo = _mm_add_epi16(maskLo, _mm_srli_epi16(maskLo, 4)); |
| maskHi = _mm_add_epi16(maskHi, _mm_srli_epi16(maskHi, 4)); |
| |
| // Interleave R,G,B into the lower byte of the word |
| // dstLo = (0, 0, d0R, 0, d0G, 0, d0B, 0, 0, 0, d1R, 0, d1G, 0, d1B, 0) |
| __m128i dstLo = _mm_unpacklo_epi8(dst, _mm_setzero_si128()); |
| // dstLo = (0, 0, d2R, 0, d2G, 0, d2B, 0, 0, 0, d3R, 0, d3G, 0, d3B, 0) |
| __m128i dstHi = _mm_unpackhi_epi8(dst, _mm_setzero_si128()); |
| |
| // mask = (src - dst) * mask |
| maskLo = _mm_mullo_epi16(maskLo, _mm_sub_epi16(src, dstLo)); |
| maskHi = _mm_mullo_epi16(maskHi, _mm_sub_epi16(src, dstHi)); |
| |
| // mask = (src - dst) * mask >> 5 |
| maskLo = _mm_srai_epi16(maskLo, 5); |
| maskHi = _mm_srai_epi16(maskHi, 5); |
| |
| // Add two pixels into result. |
| // result = dst + ((src - dst) * mask >> 5) |
| __m128i resultLo = _mm_add_epi16(dstLo, maskLo); |
| __m128i resultHi = _mm_add_epi16(dstHi, maskHi); |
| |
| // Pack into 4 32bit dst pixels and force opaque. |
| // resultLo and resultHi contain eight 16-bit components (two pixels) each. |
| // Merge into one SSE regsiter with sixteen 8-bit values (four pixels), |
| // clamping to 255 if necessary. Set alpha components to 0xFF. |
| return _mm_or_si128(_mm_packus_epi16(resultLo, resultHi), |
| _mm_set1_epi32(SK_A32_MASK << SK_A32_SHIFT)); |
| } |
| |
| void SkBlitLCD16Row_SSE2(SkPMColor dst[], const uint16_t mask[], |
| SkColor src, int width, SkPMColor) { |
| if (width <= 0) { |
| return; |
| } |
| |
| int srcA = SkColorGetA(src); |
| int srcR = SkColorGetR(src); |
| int srcG = SkColorGetG(src); |
| int srcB = SkColorGetB(src); |
| |
| srcA = SkAlpha255To256(srcA); |
| |
| if (width >= 4) { |
| SkASSERT(((size_t)dst & 0x03) == 0); |
| while (((size_t)dst & 0x0F) != 0) { |
| *dst = SkBlendLCD16(srcA, srcR, srcG, srcB, *dst, *mask); |
| mask++; |
| dst++; |
| width--; |
| } |
| |
| __m128i *d = reinterpret_cast<__m128i*>(dst); |
| // Set alpha to 0xFF and replicate source four times in SSE register. |
| __m128i src_sse = _mm_set1_epi32(SkPackARGB32(0xFF, srcR, srcG, srcB)); |
| // Interleave with zeros to get two sets of four 16-bit values. |
| src_sse = _mm_unpacklo_epi8(src_sse, _mm_setzero_si128()); |
| // Set srcA_sse to contain eight copies of srcA, padded with zero. |
| // src_sse=(0xFF, 0, sR, 0, sG, 0, sB, 0, 0xFF, 0, sR, 0, sG, 0, sB, 0) |
| __m128i srcA_sse = _mm_set1_epi16(srcA); |
| while (width >= 4) { |
| // Load four destination pixels into dst_sse. |
| __m128i dst_sse = _mm_load_si128(d); |
| // Load four 16-bit masks into lower half of mask_sse. |
| __m128i mask_sse = _mm_loadl_epi64( |
| reinterpret_cast<const __m128i*>(mask)); |
| |
| // Check whether masks are equal to 0 and get the highest bit |
| // of each byte of result, if masks are all zero, we will get |
| // pack_cmp to 0xFFFF |
| int pack_cmp = _mm_movemask_epi8(_mm_cmpeq_epi16(mask_sse, |
| _mm_setzero_si128())); |
| |
| // if mask pixels are not all zero, we will blend the dst pixels |
| if (pack_cmp != 0xFFFF) { |
| // Unpack 4 16bit mask pixels to |
| // mask_sse = (m0RGBLo, m0RGBHi, 0, 0, m1RGBLo, m1RGBHi, 0, 0, |
| // m2RGBLo, m2RGBHi, 0, 0, m3RGBLo, m3RGBHi, 0, 0) |
| mask_sse = _mm_unpacklo_epi16(mask_sse, |
| _mm_setzero_si128()); |
| |
| // Process 4 32bit dst pixels |
| __m128i result = SkBlendLCD16_SSE2(src_sse, dst_sse, |
| mask_sse, srcA_sse); |
| _mm_store_si128(d, result); |
| } |
| |
| d++; |
| mask += 4; |
| width -= 4; |
| } |
| |
| dst = reinterpret_cast<SkPMColor*>(d); |
| } |
| |
| while (width > 0) { |
| *dst = SkBlendLCD16(srcA, srcR, srcG, srcB, *dst, *mask); |
| mask++; |
| dst++; |
| width--; |
| } |
| } |
| |
| void SkBlitLCD16OpaqueRow_SSE2(SkPMColor dst[], const uint16_t mask[], |
| SkColor src, int width, SkPMColor opaqueDst) { |
| if (width <= 0) { |
| return; |
| } |
| |
| int srcR = SkColorGetR(src); |
| int srcG = SkColorGetG(src); |
| int srcB = SkColorGetB(src); |
| |
| if (width >= 4) { |
| SkASSERT(((size_t)dst & 0x03) == 0); |
| while (((size_t)dst & 0x0F) != 0) { |
| *dst = SkBlendLCD16Opaque(srcR, srcG, srcB, *dst, *mask, opaqueDst); |
| mask++; |
| dst++; |
| width--; |
| } |
| |
| __m128i *d = reinterpret_cast<__m128i*>(dst); |
| // Set alpha to 0xFF and replicate source four times in SSE register. |
| __m128i src_sse = _mm_set1_epi32(SkPackARGB32(0xFF, srcR, srcG, srcB)); |
| // Set srcA_sse to contain eight copies of srcA, padded with zero. |
| // src_sse=(0xFF, 0, sR, 0, sG, 0, sB, 0, 0xFF, 0, sR, 0, sG, 0, sB, 0) |
| src_sse = _mm_unpacklo_epi8(src_sse, _mm_setzero_si128()); |
| while (width >= 4) { |
| // Load four destination pixels into dst_sse. |
| __m128i dst_sse = _mm_load_si128(d); |
| // Load four 16-bit masks into lower half of mask_sse. |
| __m128i mask_sse = _mm_loadl_epi64( |
| reinterpret_cast<const __m128i*>(mask)); |
| |
| // Check whether masks are equal to 0 and get the highest bit |
| // of each byte of result, if masks are all zero, we will get |
| // pack_cmp to 0xFFFF |
| int pack_cmp = _mm_movemask_epi8(_mm_cmpeq_epi16(mask_sse, |
| _mm_setzero_si128())); |
| |
| // if mask pixels are not all zero, we will blend the dst pixels |
| if (pack_cmp != 0xFFFF) { |
| // Unpack 4 16bit mask pixels to |
| // mask_sse = (m0RGBLo, m0RGBHi, 0, 0, m1RGBLo, m1RGBHi, 0, 0, |
| // m2RGBLo, m2RGBHi, 0, 0, m3RGBLo, m3RGBHi, 0, 0) |
| mask_sse = _mm_unpacklo_epi16(mask_sse, |
| _mm_setzero_si128()); |
| |
| // Process 4 32bit dst pixels |
| __m128i result = SkBlendLCD16Opaque_SSE2(src_sse, dst_sse, |
| mask_sse); |
| _mm_store_si128(d, result); |
| } |
| |
| d++; |
| mask += 4; |
| width -= 4; |
| } |
| |
| dst = reinterpret_cast<SkPMColor*>(d); |
| } |
| |
| while (width > 0) { |
| *dst = SkBlendLCD16Opaque(srcR, srcG, srcB, *dst, *mask, opaqueDst); |
| mask++; |
| dst++; |
| width--; |
| } |
| } |
