'include_dirs': [
'../src/core',
'../src/opts',
- '../src/utils',
],
'conditions': [
[ 'skia_arch_type == "x86" and skia_os != "ios"', {
'../src/opts/SkBlitRect_opts_SSE2.cpp',
'../src/opts/SkBlurImage_opts_SSE2.cpp',
'../src/opts/SkMorphology_opts_SSE2.cpp',
- '../src/opts/SkTextureCompression_opts_none.cpp',
'../src/opts/SkUtils_opts_SSE2.cpp',
'../src/opts/SkXfermode_opts_SSE2.cpp',
],
'../src/opts/SkBlurImage_opts_none.cpp',
'../src/opts/SkMorphology_opts_none.cpp',
'../src/opts/SkUtils_opts_none.cpp',
- '../src/opts/SkTextureCompression_opts_none.cpp',
'../src/opts/SkXfermode_opts_none.cpp',
],
'conditions': [
'../src/opts/SkBlurImage_opts_none.cpp',
'../src/opts/SkMorphology_opts_none.cpp',
'../src/opts/SkUtils_opts_none.cpp',
- '../src/opts/SkTextureCompression_opts_none.cpp',
'../src/opts/SkXfermode_opts_none.cpp',
],
}],
'../src/opts/SkBlurImage_opts_neon.cpp',
'../src/opts/SkMorphology_opts_arm.cpp',
'../src/opts/SkMorphology_opts_neon.cpp',
- '../src/opts/SkTextureCompression_opts_none.cpp',
'../src/opts/SkUtils_opts_none.cpp',
'../src/opts/SkXfermode_opts_arm.cpp',
'../src/opts/SkXfermode_opts_arm_neon.cpp',
],
'include_dirs': [
'../src/core',
- '../src/utils',
],
'conditions': [
[ 'skia_os in ["linux", "freebsd", "openbsd", "solaris", "nacl", "chromeos", "android"] \
],
'include_dirs': [
'../src/core',
- '../src/utils',
],
'conditions': [
[ 'skia_os in ["linux", "freebsd", "openbsd", "solaris", "nacl", "chromeos", "android"] \
'include_dirs': [
'../src/core',
'../src/opts',
- '../src/utils',
],
'cflags!': [
'-fno-omit-frame-pointer',
'../src/opts/SkBlitRow_opts_arm_neon.cpp',
'../src/opts/SkBlurImage_opts_neon.cpp',
'../src/opts/SkMorphology_opts_neon.cpp',
- '../src/opts/SkTextureCompression_opts_neon.cpp',
'../src/opts/SkXfermode_opts_arm_neon.cpp',
],
},
+++ /dev/null
-/*
- * Copyright 2014
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#include "SkTextureCompressor.h"
-#include "SkTextureCompression_opts.h"
-
-#include <arm_neon.h>
-
-// Converts indices in each of the four bits of the register from
-// 0, 1, 2, 3, 4, 5, 6, 7
-// to
-// 3, 2, 1, 0, 4, 5, 6, 7
-//
-// A more detailed explanation can be found in SkTextureCompressor::convert_indices
-static inline uint8x16_t convert_indices(const uint8x16_t &x) {
- static const int8x16_t kThree = {
- 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03,
- 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03,
- };
-
- static const int8x16_t kZero = {
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- };
-
- // Take top three bits
- int8x16_t sx = vreinterpretq_s8_u8(x);
-
- // Negate ...
- sx = vnegq_s8(sx);
-
- // Add three...
- sx = vaddq_s8(sx, kThree);
-
- // Generate negatives mask
- const int8x16_t mask = vreinterpretq_s8_u8(vcltq_s8(sx, kZero));
-
- // Absolute value
- sx = vabsq_s8(sx);
-
- // Add three to the values that were negative...
- return vreinterpretq_u8_s8(vaddq_s8(sx, vandq_s8(mask, kThree)));
-}
-
-template<unsigned shift>
-static inline uint64x2_t shift_swap(const uint64x2_t &x, const uint64x2_t &mask) {
- uint64x2_t t = vandq_u64(mask, veorq_u64(x, vshrq_n_u64(x, shift)));
- return veorq_u64(x, veorq_u64(t, vshlq_n_u64(t, shift)));
-}
-
-static inline uint64x2_t pack_indices(const uint64x2_t &x) {
- // x: 00 a e 00 b f 00 c g 00 d h 00 i m 00 j n 00 k o 00 l p
-
- static const uint64x2_t kMask1 = { 0x3FC0003FC00000ULL, 0x3FC0003FC00000ULL };
- uint64x2_t ret = shift_swap<10>(x, kMask1);
-
- // x: b f 00 00 00 a e c g i m 00 00 00 d h j n 00 k o 00 l p
- static const uint64x2_t kMask2 = { (0x3FULL << 52), (0x3FULL << 52) };
- static const uint64x2_t kMask3 = { (0x3FULL << 28), (0x3FULL << 28) };
- const uint64x2_t x1 = vandq_u64(vshlq_n_u64(ret, 52), kMask2);
- const uint64x2_t x2 = vandq_u64(vshlq_n_u64(ret, 20), kMask3);
- ret = vshrq_n_u64(vorrq_u64(ret, vorrq_u64(x1, x2)), 16);
-
- // x: 00 00 00 00 00 00 00 00 b f l p a e c g i m k o d h j n
-
- static const uint64x2_t kMask4 = { 0xFC0000ULL, 0xFC0000ULL };
- ret = shift_swap<6>(ret, kMask4);
-
-#if defined (SK_CPU_BENDIAN)
- // x: 00 00 00 00 00 00 00 00 b f l p a e i m c g k o d h j n
-
- static const uint64x2_t kMask5 = { 0x3FULL, 0x3FULL };
- ret = shift_swap<36>(ret, kMask5);
-
- // x: 00 00 00 00 00 00 00 00 b f j n a e i m c g k o d h l p
-
- static const uint64x2_t kMask6 = { 0xFFF000000ULL, 0xFFF000000ULL };
- ret = shift_swap<12>(ret, kMask6);
-#else
- // x: 00 00 00 00 00 00 00 00 c g i m d h l p b f j n a e k o
-
- static const uint64x2_t kMask5 = { 0xFC0ULL, 0xFC0ULL };
- ret = shift_swap<36>(ret, kMask5);
-
- // x: 00 00 00 00 00 00 00 00 a e i m d h l p b f j n c g k o
-
- static const uint64x2_t kMask6 = { (0xFFFULL << 36), (0xFFFULL << 36) };
- static const uint64x2_t kMask7 = { 0xFFFFFFULL, 0xFFFFFFULL };
- static const uint64x2_t kMask8 = { 0xFFFULL, 0xFFFULL };
- const uint64x2_t y1 = vandq_u64(ret, kMask6);
- const uint64x2_t y2 = vshlq_n_u64(vandq_u64(ret, kMask7), 12);
- const uint64x2_t y3 = vandq_u64(vshrq_n_u64(ret, 24), kMask8);
- ret = vorrq_u64(y1, vorrq_u64(y2, y3));
-#endif
-
- // x: 00 00 00 00 00 00 00 00 a e i m b f j n c g k o d h l p
-
- // Set the header
- static const uint64x2_t kHeader = { 0x8490000000000000ULL, 0x8490000000000000ULL };
- return vorrq_u64(kHeader, ret);
-}
-
-// Takes a row of alpha values and places the most significant three bits of each byte into
-// the least significant bits of the same byte
-static inline uint8x16_t make_index_row(const uint8x16_t &x) {
- static const uint8x16_t kTopThreeMask = {
- 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0,
- 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0, 0xE0,
- };
- return vshrq_n_u8(vandq_u8(x, kTopThreeMask), 5);
-}
-
-// Returns true if all of the bits in x are 0.
-static inline bool is_zero(uint8x16_t x) {
-// First experiments say that this is way slower than just examining the lanes
-// but it might need a little more investigation.
-#if 0
- // This code path tests the system register for overflow. We trigger
- // overflow by adding x to a register with all of its bits set. The
- // first instruction sets the bits.
- int reg;
- asm ("VTST.8 %%q0, %q1, %q1\n"
- "VQADD.u8 %q1, %%q0\n"
- "VMRS %0, FPSCR\n"
- : "=r"(reg) : "w"(vreinterpretq_f32_u8(x)) : "q0", "q1");
-
- // Bit 21 corresponds to the overflow flag.
- return reg & (0x1 << 21);
-#else
- const uint64x2_t cvt = vreinterpretq_u64_u8(x);
- const uint64_t l1 = vgetq_lane_u64(cvt, 0);
- return (l1 == 0) && (l1 == vgetq_lane_u64(cvt, 1));
-#endif
-}
-
-#if defined (SK_CPU_BENDIAN)
-static inline uint64x2_t fix_endianness(uint64x2_t x) {
- return x;
-}
-#else
-static inline uint64x2_t fix_endianness(uint64x2_t x) {
- return vreinterpretq_u64_u8(vrev64q_u8(vreinterpretq_u8_u64(x)));
-}
-#endif
-
-static void compress_r11eac_blocks(uint64_t* dst, const uint8_t* src, int rowBytes) {
-
- // Try to avoid switching between vector and non-vector ops...
- const uint8_t *const src1 = src;
- const uint8_t *const src2 = src + rowBytes;
- const uint8_t *const src3 = src + 2*rowBytes;
- const uint8_t *const src4 = src + 3*rowBytes;
- uint64_t *const dst1 = dst;
- uint64_t *const dst2 = dst + 2;
-
- const uint8x16_t alphaRow1 = vld1q_u8(src1);
- const uint8x16_t alphaRow2 = vld1q_u8(src2);
- const uint8x16_t alphaRow3 = vld1q_u8(src3);
- const uint8x16_t alphaRow4 = vld1q_u8(src4);
-
- const uint8x16_t cmp12 = vceqq_u8(alphaRow1, alphaRow2);
- const uint8x16_t cmp34 = vceqq_u8(alphaRow3, alphaRow4);
- const uint8x16_t cmp13 = vceqq_u8(alphaRow1, alphaRow3);
-
- const uint8x16_t cmp = vandq_u8(vandq_u8(cmp12, cmp34), cmp13);
- const uint8x16_t ncmp = vmvnq_u8(cmp);
- const uint8x16_t nAlphaRow1 = vmvnq_u8(alphaRow1);
- if (is_zero(ncmp)) {
- if (is_zero(alphaRow1)) {
- static const uint64x2_t kTransparent = { 0x0020000000002000ULL,
- 0x0020000000002000ULL };
- vst1q_u64(dst1, kTransparent);
- vst1q_u64(dst2, kTransparent);
- return;
- } else if (is_zero(nAlphaRow1)) {
- vst1q_u64(dst1, vreinterpretq_u64_u8(cmp));
- vst1q_u64(dst2, vreinterpretq_u64_u8(cmp));
- return;
- }
- }
-
- const uint8x16_t indexRow1 = convert_indices(make_index_row(alphaRow1));
- const uint8x16_t indexRow2 = convert_indices(make_index_row(alphaRow2));
- const uint8x16_t indexRow3 = convert_indices(make_index_row(alphaRow3));
- const uint8x16_t indexRow4 = convert_indices(make_index_row(alphaRow4));
-
- const uint64x2_t indexRow12 = vreinterpretq_u64_u8(
- vorrq_u8(vshlq_n_u8(indexRow1, 3), indexRow2));
- const uint64x2_t indexRow34 = vreinterpretq_u64_u8(
- vorrq_u8(vshlq_n_u8(indexRow3, 3), indexRow4));
-
- const uint32x4x2_t blockIndices = vtrnq_u32(vreinterpretq_u32_u64(indexRow12),
- vreinterpretq_u32_u64(indexRow34));
- const uint64x2_t blockIndicesLeft = vreinterpretq_u64_u32(vrev64q_u32(blockIndices.val[0]));
- const uint64x2_t blockIndicesRight = vreinterpretq_u64_u32(vrev64q_u32(blockIndices.val[1]));
-
- const uint64x2_t indicesLeft = fix_endianness(pack_indices(blockIndicesLeft));
- const uint64x2_t indicesRight = fix_endianness(pack_indices(blockIndicesRight));
-
- const uint64x2_t d1 = vcombine_u64(vget_low_u64(indicesLeft), vget_low_u64(indicesRight));
- const uint64x2_t d2 = vcombine_u64(vget_high_u64(indicesLeft), vget_high_u64(indicesRight));
- vst1q_u64(dst1, d1);
- vst1q_u64(dst2, d2);
-}
-
-static bool compress_a8_to_r11eac(uint8_t* dst, const uint8_t* src,
- int width, int height, int rowBytes) {
-
- // Since we're going to operate on 4 blocks at a time, the src width
- // must be a multiple of 16. However, the height only needs to be a
- // multiple of 4
- if (0 == width || 0 == height || (width % 16) != 0 || (height % 4) != 0) {
- return SkTextureCompressor::CompressBufferToFormat(
- dst, src,
- kAlpha_8_SkColorType,
- width, height, rowBytes,
- SkTextureCompressor::kR11_EAC_Format, false);
- }
-
- const int blocksX = width >> 2;
- const int blocksY = height >> 2;
-
- SkASSERT((blocksX % 4) == 0);
-
- uint64_t* encPtr = reinterpret_cast<uint64_t*>(dst);
- for (int y = 0; y < blocksY; ++y) {
- for (int x = 0; x < blocksX; x+=4) {
- // Compress it
- compress_r11eac_blocks(encPtr, src + 4*x, rowBytes);
- encPtr += 4;
- }
- src += 4 * rowBytes;
- }
- return true;
-}
-
-SkTextureCompressor::CompressionProc
-SkTextureCompressorGetPlatformProc(SkColorType colorType, SkTextureCompressor::Format fmt) {
- switch (colorType) {
- case kAlpha_8_SkColorType:
- {
- switch (fmt) {
- case SkTextureCompressor::kR11_EAC_Format:
- return compress_a8_to_r11eac;
- default:
- return NULL;
- }
- }
- break;
-
- default:
- return NULL;
- }
-}
#include "SkData.h"
#include "SkEndian.h"
-#include "SkTextureCompression_opts.h"
-
////////////////////////////////////////////////////////////////////////////////
//
// Utility Functions
// x: b f 00 00 00 a e c g i m 00 00 00 d h j n 00 k o 00 l p
- x = (x | ((x << 52) & (0x3FULL << 52)) | ((x << 20) & (0x3FULL << 28))) >> 16;
+ x |= ((x << 52) & (0x3FULL << 52));
+ x = (x | ((x << 20) & (0x3FULL << 28))) >> 16;
+#if defined (SK_CPU_BENDIAN)
// x: 00 00 00 00 00 00 00 00 b f l p a e c g i m k o d h j n
t = (x ^ (x >> 6)) & 0xFC0000ULL;
x = x ^ t ^ (t << 6);
-#if defined (SK_CPU_BENDIAN)
// x: 00 00 00 00 00 00 00 00 b f l p a e i m c g k o d h j n
t = (x ^ (x >> 36)) & 0x3FULL;
#else
// If our CPU is little endian, then the above logic will
// produce the following indices:
+ // x: 00 00 00 00 00 00 00 00 c g i m d h b f l p j n a e k o
+
+ t = (x ^ (x >> 6)) & 0xFC0000ULL;
+ x = x ^ t ^ (t << 6);
+
// x: 00 00 00 00 00 00 00 00 c g i m d h l p b f j n a e k o
t = (x ^ (x >> 36)) & 0xFC0ULL;
}
}
+typedef bool (*CompressBitmapProc)(uint8_t* dst, const uint8_t* src,
+ int width, int height, int rowBytes);
+
bool CompressBufferToFormat(uint8_t* dst, const uint8_t* src, SkColorType srcColorType,
- int width, int height, int rowBytes, Format format, bool opt) {
- CompressionProc proc = NULL;
- if (opt) {
- proc = SkTextureCompressorGetPlatformProc(srcColorType, format);
- }
+ int width, int height, int rowBytes, Format format) {
- if (NULL == proc) {
- switch (srcColorType) {
- case kAlpha_8_SkColorType:
- {
- switch (format) {
- case kLATC_Format:
- proc = compress_a8_to_latc;
- break;
- case kR11_EAC_Format:
- proc = compress_a8_to_r11eac;
- break;
- default:
- // Do nothing...
- break;
- }
- }
- break;
+ CompressBitmapProc kProcMap[kFormatCnt][kLastEnum_SkColorType + 1];
+ memset(kProcMap, 0, sizeof(kProcMap));
- default:
- // Do nothing...
- break;
- }
- }
+ kProcMap[kLATC_Format][kAlpha_8_SkColorType] = compress_a8_to_latc;
+ kProcMap[kR11_EAC_Format][kAlpha_8_SkColorType] = compress_a8_to_r11eac;
+ CompressBitmapProc proc = kProcMap[format][srcColorType];
if (NULL != proc) {
return proc(dst, src, width, height, rowBytes);
}
projects / platform / upstream / libSkiaSharp.git / commitdiff