| |
| /* |
| * Copyright 2011 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| #include "SkBitmapProcState.h" |
| #include "SkColorPriv.h" |
| #include "SkFilterProc.h" |
| #include "SkPaint.h" |
| #include "SkShader.h" // for tilemodes |
| #include "SkUtilsArm.h" |
| |
| #if !SK_ARM_NEON_IS_NONE |
| // These are defined in src/opts/SkBitmapProcState_arm_neon.cpp |
| extern const SkBitmapProcState::SampleProc16 gSkBitmapProcStateSample16_neon[]; |
| extern const SkBitmapProcState::SampleProc32 gSkBitmapProcStateSample32_neon[]; |
| extern void S16_D16_filter_DX_neon(const SkBitmapProcState&, const uint32_t*, int, uint16_t*); |
| extern void Clamp_S16_D16_filter_DX_shaderproc_neon(const SkBitmapProcState&, int, int, uint16_t*, int); |
| extern void Repeat_S16_D16_filter_DX_shaderproc_neon(const SkBitmapProcState&, int, int, uint16_t*, int); |
| extern void SI8_opaque_D32_filter_DX_neon(const SkBitmapProcState&, const uint32_t*, int, SkPMColor*); |
| extern void SI8_opaque_D32_filter_DX_shaderproc_neon(const SkBitmapProcState&, int, int, uint32_t*, int); |
| extern void Clamp_SI8_opaque_D32_filter_DX_shaderproc_neon(const SkBitmapProcState&, int, int, uint32_t*, int); |
| #endif |
| |
| #define NAME_WRAP(x) x |
| #include "SkBitmapProcState_filter.h" |
| #include "SkBitmapProcState_procs.h" |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| /** |
| * For the purposes of drawing bitmaps, if a matrix is "almost" translate |
| * go ahead and treat it as if it were, so that subsequent code can go fast. |
| */ |
| static bool just_trans_clamp(const SkMatrix& matrix, const SkBitmap& bitmap) { |
| SkMatrix::TypeMask mask = matrix.getType(); |
| |
| if (mask & (SkMatrix::kAffine_Mask | SkMatrix::kPerspective_Mask)) { |
| return false; |
| } |
| if (mask & SkMatrix::kScale_Mask) { |
| SkScalar sx = matrix[SkMatrix::kMScaleX]; |
| SkScalar sy = matrix[SkMatrix::kMScaleY]; |
| int w = bitmap.width(); |
| int h = bitmap.height(); |
| int sw = SkScalarRound(SkScalarMul(sx, SkIntToScalar(w))); |
| int sh = SkScalarRound(SkScalarMul(sy, SkIntToScalar(h))); |
| return sw == w && sh == h; |
| } |
| // if we got here, we're either kTranslate_Mask or identity |
| return true; |
| } |
| |
| static bool just_trans_general(const SkMatrix& matrix) { |
| SkMatrix::TypeMask mask = matrix.getType(); |
| |
| if (mask & (SkMatrix::kAffine_Mask | SkMatrix::kPerspective_Mask)) { |
| return false; |
| } |
| if (mask & SkMatrix::kScale_Mask) { |
| const SkScalar tol = SK_Scalar1 / 32768; |
| |
| if (!SkScalarNearlyZero(matrix[SkMatrix::kMScaleX] - SK_Scalar1, tol)) { |
| return false; |
| } |
| if (!SkScalarNearlyZero(matrix[SkMatrix::kMScaleY] - SK_Scalar1, tol)) { |
| return false; |
| } |
| } |
| // if we got here, treat us as either kTranslate_Mask or identity |
| return true; |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static bool valid_for_filtering(unsigned dimension) { |
| // for filtering, width and height must fit in 14bits, since we use steal |
| // 2 bits from each to store our 4bit subpixel data |
| return (dimension & ~0x3FFF) == 0; |
| } |
| |
| bool SkBitmapProcState::chooseProcs(const SkMatrix& inv, const SkPaint& paint) { |
| if (fOrigBitmap.width() == 0 || fOrigBitmap.height() == 0) { |
| return false; |
| } |
| |
| const SkMatrix* m; |
| bool trivial_matrix = (inv.getType() & ~SkMatrix::kTranslate_Mask) == 0; |
| bool clamp_clamp = SkShader::kClamp_TileMode == fTileModeX && |
| SkShader::kClamp_TileMode == fTileModeY; |
| |
| if (clamp_clamp || trivial_matrix) { |
| m = &inv; |
| } else { |
| fUnitInvMatrix = inv; |
| fUnitInvMatrix.postIDiv(fOrigBitmap.width(), fOrigBitmap.height()); |
| m = &fUnitInvMatrix; |
| } |
| |
| fBitmap = &fOrigBitmap; |
| if (fOrigBitmap.hasMipMap()) { |
| int shift = fOrigBitmap.extractMipLevel(&fMipBitmap, |
| SkScalarToFixed(m->getScaleX()), |
| SkScalarToFixed(m->getSkewY())); |
| |
| if (shift > 0) { |
| if (m != &fUnitInvMatrix) { |
| fUnitInvMatrix = *m; |
| m = &fUnitInvMatrix; |
| } |
| |
| SkScalar scale = SkFixedToScalar(SK_Fixed1 >> shift); |
| fUnitInvMatrix.postScale(scale, scale); |
| |
| // now point here instead of fOrigBitmap |
| fBitmap = &fMipBitmap; |
| } |
| } |
| |
| // wack our matrix to exactly no-scale, if we're really close to begin with |
| { |
| bool fixupMatrix = clamp_clamp ? |
| just_trans_clamp(*m, *fBitmap) : just_trans_general(*m); |
| if (fixupMatrix) { |
| #ifdef SK_IGNORE_TRANS_CLAMP_FIX |
| if (m != &fUnitInvMatrix) { // can't mutate the original |
| fUnitInvMatrix = inv; |
| m = &fUnitInvMatrix; |
| } |
| fUnitInvMatrix.set(SkMatrix::kMScaleX, SK_Scalar1); |
| fUnitInvMatrix.set(SkMatrix::kMScaleY, SK_Scalar1); |
| #else |
| // If we can be treated just like translate, construct that inverse |
| // such that we landed in the proper place. Given that m may have |
| // some slight scale, we have to invert it to compute this new |
| // matrix. |
| SkMatrix forward; |
| if (m->invert(&forward)) { |
| SkScalar tx = -SkScalarRoundToScalar(forward.getTranslateX()); |
| SkScalar ty = -SkScalarRoundToScalar(forward.getTranslateY()); |
| fUnitInvMatrix.setTranslate(tx, ty); |
| m = &fUnitInvMatrix; |
| // now the following code will sniff m, and decide to take the |
| // fast case (since m is purely translate). |
| } |
| #endif |
| } |
| } |
| |
| // Below this point, we should never refer to the inv parameter, since we |
| // may be using a munged version for "our" inverse. |
| |
| fInvMatrix = m; |
| fInvProc = m->getMapXYProc(); |
| fInvType = m->getType(); |
| fInvSx = SkScalarToFixed(m->getScaleX()); |
| fInvSxFractionalInt = SkScalarToFractionalInt(m->getScaleX()); |
| fInvKy = SkScalarToFixed(m->getSkewY()); |
| fInvKyFractionalInt = SkScalarToFractionalInt(m->getSkewY()); |
| |
| fAlphaScale = SkAlpha255To256(paint.getAlpha()); |
| |
| // pick-up filtering from the paint, but only if the matrix is |
| // more complex than identity/translate (i.e. no need to pay the cost |
| // of filtering if we're not scaled etc.). |
| // note: we explicitly check inv, since m might be scaled due to unitinv |
| // trickery, but we don't want to see that for this test |
| fDoFilter = paint.isFilterBitmap() && |
| (fInvType > SkMatrix::kTranslate_Mask && |
| valid_for_filtering(fBitmap->width() | fBitmap->height())); |
| |
| fShaderProc32 = NULL; |
| fShaderProc16 = NULL; |
| fSampleProc32 = NULL; |
| fSampleProc16 = NULL; |
| |
| fMatrixProc = this->chooseMatrixProc(trivial_matrix); |
| if (NULL == fMatrixProc) { |
| return false; |
| } |
| |
| /////////////////////////////////////////////////////////////////////// |
| |
| int index = 0; |
| if (fAlphaScale < 256) { // note: this distinction is not used for D16 |
| index |= 1; |
| } |
| if (fInvType <= (SkMatrix::kTranslate_Mask | SkMatrix::kScale_Mask)) { |
| index |= 2; |
| } |
| if (fDoFilter) { |
| index |= 4; |
| } |
| // bits 3,4,5 encoding the source bitmap format |
| switch (fBitmap->config()) { |
| case SkBitmap::kARGB_8888_Config: |
| index |= 0; |
| break; |
| case SkBitmap::kRGB_565_Config: |
| index |= 8; |
| break; |
| case SkBitmap::kIndex8_Config: |
| index |= 16; |
| break; |
| case SkBitmap::kARGB_4444_Config: |
| index |= 24; |
| break; |
| case SkBitmap::kA8_Config: |
| index |= 32; |
| fPaintPMColor = SkPreMultiplyColor(paint.getColor()); |
| break; |
| default: |
| return false; |
| } |
| |
| #if !SK_ARM_NEON_IS_ALWAYS |
| static const SampleProc32 gSkBitmapProcStateSample32[] = { |
| S32_opaque_D32_nofilter_DXDY, |
| S32_alpha_D32_nofilter_DXDY, |
| S32_opaque_D32_nofilter_DX, |
| S32_alpha_D32_nofilter_DX, |
| S32_opaque_D32_filter_DXDY, |
| S32_alpha_D32_filter_DXDY, |
| S32_opaque_D32_filter_DX, |
| S32_alpha_D32_filter_DX, |
| |
| S16_opaque_D32_nofilter_DXDY, |
| S16_alpha_D32_nofilter_DXDY, |
| S16_opaque_D32_nofilter_DX, |
| S16_alpha_D32_nofilter_DX, |
| S16_opaque_D32_filter_DXDY, |
| S16_alpha_D32_filter_DXDY, |
| S16_opaque_D32_filter_DX, |
| S16_alpha_D32_filter_DX, |
| |
| SI8_opaque_D32_nofilter_DXDY, |
| SI8_alpha_D32_nofilter_DXDY, |
| SI8_opaque_D32_nofilter_DX, |
| SI8_alpha_D32_nofilter_DX, |
| SI8_opaque_D32_filter_DXDY, |
| SI8_alpha_D32_filter_DXDY, |
| SI8_opaque_D32_filter_DX, |
| SI8_alpha_D32_filter_DX, |
| |
| S4444_opaque_D32_nofilter_DXDY, |
| S4444_alpha_D32_nofilter_DXDY, |
| S4444_opaque_D32_nofilter_DX, |
| S4444_alpha_D32_nofilter_DX, |
| S4444_opaque_D32_filter_DXDY, |
| S4444_alpha_D32_filter_DXDY, |
| S4444_opaque_D32_filter_DX, |
| S4444_alpha_D32_filter_DX, |
| |
| // A8 treats alpha/opaque the same (equally efficient) |
| SA8_alpha_D32_nofilter_DXDY, |
| SA8_alpha_D32_nofilter_DXDY, |
| SA8_alpha_D32_nofilter_DX, |
| SA8_alpha_D32_nofilter_DX, |
| SA8_alpha_D32_filter_DXDY, |
| SA8_alpha_D32_filter_DXDY, |
| SA8_alpha_D32_filter_DX, |
| SA8_alpha_D32_filter_DX |
| }; |
| |
| static const SampleProc16 gSkBitmapProcStateSample16[] = { |
| S32_D16_nofilter_DXDY, |
| S32_D16_nofilter_DX, |
| S32_D16_filter_DXDY, |
| S32_D16_filter_DX, |
| |
| S16_D16_nofilter_DXDY, |
| S16_D16_nofilter_DX, |
| S16_D16_filter_DXDY, |
| S16_D16_filter_DX, |
| |
| SI8_D16_nofilter_DXDY, |
| SI8_D16_nofilter_DX, |
| SI8_D16_filter_DXDY, |
| SI8_D16_filter_DX, |
| |
| // Don't support 4444 -> 565 |
| NULL, NULL, NULL, NULL, |
| // Don't support A8 -> 565 |
| NULL, NULL, NULL, NULL |
| }; |
| #endif |
| |
| fSampleProc32 = SK_ARM_NEON_WRAP(gSkBitmapProcStateSample32)[index]; |
| index >>= 1; // shift away any opaque/alpha distinction |
| fSampleProc16 = SK_ARM_NEON_WRAP(gSkBitmapProcStateSample16)[index]; |
| |
| // our special-case shaderprocs |
| if (SK_ARM_NEON_WRAP(S16_D16_filter_DX) == fSampleProc16) { |
| if (clamp_clamp) { |
| fShaderProc16 = SK_ARM_NEON_WRAP(Clamp_S16_D16_filter_DX_shaderproc); |
| } else if (SkShader::kRepeat_TileMode == fTileModeX && |
| SkShader::kRepeat_TileMode == fTileModeY) { |
| fShaderProc16 = SK_ARM_NEON_WRAP(Repeat_S16_D16_filter_DX_shaderproc); |
| } |
| } else if (SK_ARM_NEON_WRAP(SI8_opaque_D32_filter_DX) == fSampleProc32 && clamp_clamp) { |
| fShaderProc32 = SK_ARM_NEON_WRAP(Clamp_SI8_opaque_D32_filter_DX_shaderproc); |
| } |
| |
| if (NULL == fShaderProc32) { |
| fShaderProc32 = this->chooseShaderProc32(); |
| } |
| |
| // see if our platform has any accelerated overrides |
| this->platformProcs(); |
| return true; |
| } |
| |
| static void Clamp_S32_D32_nofilter_trans_shaderproc(const SkBitmapProcState& s, |
| int x, int y, |
| SkPMColor* SK_RESTRICT colors, |
| int count) { |
| SkASSERT(((s.fInvType & ~SkMatrix::kTranslate_Mask)) == 0); |
| SkASSERT(s.fInvKy == 0); |
| SkASSERT(count > 0 && colors != NULL); |
| SkASSERT(!s.fDoFilter); |
| |
| const int maxX = s.fBitmap->width() - 1; |
| const int maxY = s.fBitmap->height() - 1; |
| int ix = s.fFilterOneX + x; |
| int iy = SkClampMax(s.fFilterOneY + y, maxY); |
| #ifdef SK_DEBUG |
| { |
| SkPoint pt; |
| s.fInvProc(*s.fInvMatrix, SkIntToScalar(x) + SK_ScalarHalf, |
| SkIntToScalar(y) + SK_ScalarHalf, &pt); |
| int iy2 = SkClampMax(SkScalarFloorToInt(pt.fY), maxY); |
| int ix2 = SkScalarFloorToInt(pt.fX); |
| |
| SkASSERT(iy == iy2); |
| SkASSERT(ix == ix2); |
| } |
| #endif |
| const SkPMColor* row = s.fBitmap->getAddr32(0, iy); |
| |
| // clamp to the left |
| if (ix < 0) { |
| int n = SkMin32(-ix, count); |
| sk_memset32(colors, row[0], n); |
| count -= n; |
| if (0 == count) { |
| return; |
| } |
| colors += n; |
| SkASSERT(-ix == n); |
| ix = 0; |
| } |
| // copy the middle |
| if (ix <= maxX) { |
| int n = SkMin32(maxX - ix + 1, count); |
| memcpy(colors, row + ix, n * sizeof(SkPMColor)); |
| count -= n; |
| if (0 == count) { |
| return; |
| } |
| colors += n; |
| } |
| SkASSERT(count > 0); |
| // clamp to the right |
| sk_memset32(colors, row[maxX], count); |
| } |
| |
| static inline int sk_int_mod(int x, int n) { |
| SkASSERT(n > 0); |
| if ((unsigned)x >= (unsigned)n) { |
| if (x < 0) { |
| x = n + ~(~x % n); |
| } else { |
| x = x % n; |
| } |
| } |
| return x; |
| } |
| |
| static inline int sk_int_mirror(int x, int n) { |
| x = sk_int_mod(x, 2 * n); |
| if (x >= n) { |
| x = n + ~(x - n); |
| } |
| return x; |
| } |
| |
| static void Repeat_S32_D32_nofilter_trans_shaderproc(const SkBitmapProcState& s, |
| int x, int y, |
| SkPMColor* SK_RESTRICT colors, |
| int count) { |
| SkASSERT(((s.fInvType & ~SkMatrix::kTranslate_Mask)) == 0); |
| SkASSERT(s.fInvKy == 0); |
| SkASSERT(count > 0 && colors != NULL); |
| SkASSERT(!s.fDoFilter); |
| |
| const int stopX = s.fBitmap->width(); |
| const int stopY = s.fBitmap->height(); |
| int ix = s.fFilterOneX + x; |
| int iy = sk_int_mod(s.fFilterOneY + y, stopY); |
| #ifdef SK_DEBUG |
| { |
| SkPoint pt; |
| s.fInvProc(*s.fInvMatrix, SkIntToScalar(x) + SK_ScalarHalf, |
| SkIntToScalar(y) + SK_ScalarHalf, &pt); |
| int iy2 = sk_int_mod(SkScalarFloorToInt(pt.fY), stopY); |
| int ix2 = SkScalarFloorToInt(pt.fX); |
| |
| SkASSERT(iy == iy2); |
| SkASSERT(ix == ix2); |
| } |
| #endif |
| const SkPMColor* row = s.fBitmap->getAddr32(0, iy); |
| |
| ix = sk_int_mod(ix, stopX); |
| for (;;) { |
| int n = SkMin32(stopX - ix, count); |
| memcpy(colors, row + ix, n * sizeof(SkPMColor)); |
| count -= n; |
| if (0 == count) { |
| return; |
| } |
| colors += n; |
| ix = 0; |
| } |
| } |
| |
| static void S32_D32_constX_shaderproc(const SkBitmapProcState& s, |
| int x, int y, |
| SkPMColor* SK_RESTRICT colors, |
| int count) { |
| SkASSERT((s.fInvType & ~(SkMatrix::kTranslate_Mask | SkMatrix::kScale_Mask)) == 0); |
| SkASSERT(s.fInvKy == 0); |
| SkASSERT(count > 0 && colors != NULL); |
| SkASSERT(1 == s.fBitmap->width()); |
| |
| int iY0, iY1, iSubY; |
| |
| if (s.fDoFilter) { |
| SkBitmapProcState::MatrixProc mproc = s.getMatrixProc(); |
| uint32_t xy[2]; |
| |
| mproc(s, xy, 1, x, y); |
| |
| iY0 = xy[0] >> 18; |
| iY1 = xy[0] & 0x3FFF; |
| iSubY = (xy[0] >> 14) & 0xF; |
| } else { |
| int yTemp; |
| |
| if (s.fInvType > SkMatrix::kTranslate_Mask) { |
| SkPoint pt; |
| s.fInvProc(*s.fInvMatrix, |
| SkIntToScalar(x) + SK_ScalarHalf, |
| SkIntToScalar(y) + SK_ScalarHalf, |
| &pt); |
| // When the matrix has a scale component the setup code in |
| // chooseProcs multiples the inverse matrix by the inverse of the |
| // bitmap's width and height. Since this method is going to do |
| // its own tiling and sampling we need to undo that here. |
| if (SkShader::kClamp_TileMode != s.fTileModeX || |
| SkShader::kClamp_TileMode != s.fTileModeY) { |
| yTemp = SkScalarFloorToInt(pt.fY * s.fBitmap->height()); |
| } else { |
| yTemp = SkScalarFloorToInt(pt.fY); |
| } |
| } else { |
| yTemp = s.fFilterOneY + y; |
| } |
| |
| const int stopY = s.fBitmap->height(); |
| switch (s.fTileModeY) { |
| case SkShader::kClamp_TileMode: |
| iY0 = SkClampMax(yTemp, stopY-1); |
| break; |
| case SkShader::kRepeat_TileMode: |
| iY0 = sk_int_mod(yTemp, stopY); |
| break; |
| case SkShader::kMirror_TileMode: |
| default: |
| iY0 = sk_int_mirror(yTemp, stopY); |
| break; |
| } |
| |
| #ifdef SK_DEBUG |
| { |
| SkPoint pt; |
| s.fInvProc(*s.fInvMatrix, |
| SkIntToScalar(x) + SK_ScalarHalf, |
| SkIntToScalar(y) + SK_ScalarHalf, |
| &pt); |
| if (s.fInvType > SkMatrix::kTranslate_Mask && |
| (SkShader::kClamp_TileMode != s.fTileModeX || |
| SkShader::kClamp_TileMode != s.fTileModeY)) { |
| pt.fY *= s.fBitmap->height(); |
| } |
| int iY2; |
| |
| switch (s.fTileModeY) { |
| case SkShader::kClamp_TileMode: |
| iY2 = SkClampMax(SkScalarFloorToInt(pt.fY), stopY-1); |
| break; |
| case SkShader::kRepeat_TileMode: |
| iY2 = sk_int_mod(SkScalarFloorToInt(pt.fY), stopY); |
| break; |
| case SkShader::kMirror_TileMode: |
| default: |
| iY2 = sk_int_mirror(SkScalarFloorToInt(pt.fY), stopY); |
| break; |
| } |
| |
| SkASSERT(iY0 == iY2); |
| } |
| #endif |
| } |
| |
| const SkPMColor* row0 = s.fBitmap->getAddr32(0, iY0); |
| SkPMColor color; |
| |
| if (s.fDoFilter) { |
| const SkPMColor* row1 = s.fBitmap->getAddr32(0, iY1); |
| |
| if (s.fAlphaScale < 256) { |
| Filter_32_alpha(iSubY, *row0, *row1, &color, s.fAlphaScale); |
| } else { |
| Filter_32_opaque(iSubY, *row0, *row1, &color); |
| } |
| } else { |
| if (s.fAlphaScale < 256) { |
| color = SkAlphaMulQ(*row0, s.fAlphaScale); |
| } else { |
| color = *row0; |
| } |
| } |
| |
| sk_memset32(colors, color, count); |
| } |
| |
| static void DoNothing_shaderproc(const SkBitmapProcState&, int x, int y, |
| SkPMColor* SK_RESTRICT colors, int count) { |
| // if we get called, the matrix is too tricky, so we just draw nothing |
| sk_memset32(colors, 0, count); |
| } |
| |
| bool SkBitmapProcState::setupForTranslate() { |
| SkPoint pt; |
| fInvProc(*fInvMatrix, SK_ScalarHalf, SK_ScalarHalf, &pt); |
| |
| /* |
| * if the translate is larger than our ints, we can get random results, or |
| * worse, we might get 0x80000000, which wreaks havoc on us, since we can't |
| * negate it. |
| */ |
| const SkScalar too_big = SkIntToScalar(1 << 30); |
| if (SkScalarAbs(pt.fX) > too_big || SkScalarAbs(pt.fY) > too_big) { |
| return false; |
| } |
| |
| // Since we know we're not filtered, we re-purpose these fields allow |
| // us to go from device -> src coordinates w/ just an integer add, |
| // rather than running through the inverse-matrix |
| fFilterOneX = SkScalarFloorToInt(pt.fX); |
| fFilterOneY = SkScalarFloorToInt(pt.fY); |
| return true; |
| } |
| |
| SkBitmapProcState::ShaderProc32 SkBitmapProcState::chooseShaderProc32() { |
| |
| if (SkBitmap::kARGB_8888_Config != fBitmap->config()) { |
| return NULL; |
| } |
| |
| #ifndef SK_IGNORE_1XN_BITMAP_OPT |
| static const unsigned kMask = SkMatrix::kTranslate_Mask | SkMatrix::kScale_Mask; |
| |
| if (1 == fBitmap->width() && 0 == (fInvType & ~kMask)) { |
| if (!fDoFilter && fInvType <= SkMatrix::kTranslate_Mask && !this->setupForTranslate()) { |
| return DoNothing_shaderproc; |
| } |
| return S32_D32_constX_shaderproc; |
| } |
| #endif |
| |
| if (fAlphaScale < 256) { |
| return NULL; |
| } |
| if (fInvType > SkMatrix::kTranslate_Mask) { |
| return NULL; |
| } |
| if (fDoFilter) { |
| return NULL; |
| } |
| |
| SkShader::TileMode tx = (SkShader::TileMode)fTileModeX; |
| SkShader::TileMode ty = (SkShader::TileMode)fTileModeY; |
| |
| if (SkShader::kClamp_TileMode == tx && SkShader::kClamp_TileMode == ty) { |
| if (this->setupForTranslate()) { |
| return Clamp_S32_D32_nofilter_trans_shaderproc; |
| } |
| return DoNothing_shaderproc; |
| } |
| if (SkShader::kRepeat_TileMode == tx && SkShader::kRepeat_TileMode == ty) { |
| if (this->setupForTranslate()) { |
| return Repeat_S32_D32_nofilter_trans_shaderproc; |
| } |
| return DoNothing_shaderproc; |
| } |
| return NULL; |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| #ifdef SK_DEBUG |
| |
| static void check_scale_nofilter(uint32_t bitmapXY[], int count, |
| unsigned mx, unsigned my) { |
| unsigned y = *bitmapXY++; |
| SkASSERT(y < my); |
| |
| const uint16_t* xptr = reinterpret_cast<const uint16_t*>(bitmapXY); |
| for (int i = 0; i < count; ++i) { |
| SkASSERT(xptr[i] < mx); |
| } |
| } |
| |
| static void check_scale_filter(uint32_t bitmapXY[], int count, |
| unsigned mx, unsigned my) { |
| uint32_t YY = *bitmapXY++; |
| unsigned y0 = YY >> 18; |
| unsigned y1 = YY & 0x3FFF; |
| SkASSERT(y0 < my); |
| SkASSERT(y1 < my); |
| |
| for (int i = 0; i < count; ++i) { |
| uint32_t XX = bitmapXY[i]; |
| unsigned x0 = XX >> 18; |
| unsigned x1 = XX & 0x3FFF; |
| SkASSERT(x0 < mx); |
| SkASSERT(x1 < mx); |
| } |
| } |
| |
| static void check_affine_nofilter(uint32_t bitmapXY[], int count, |
| unsigned mx, unsigned my) { |
| for (int i = 0; i < count; ++i) { |
| uint32_t XY = bitmapXY[i]; |
| unsigned x = XY & 0xFFFF; |
| unsigned y = XY >> 16; |
| SkASSERT(x < mx); |
| SkASSERT(y < my); |
| } |
| } |
| |
| static void check_affine_filter(uint32_t bitmapXY[], int count, |
| unsigned mx, unsigned my) { |
| for (int i = 0; i < count; ++i) { |
| uint32_t YY = *bitmapXY++; |
| unsigned y0 = YY >> 18; |
| unsigned y1 = YY & 0x3FFF; |
| SkASSERT(y0 < my); |
| SkASSERT(y1 < my); |
| |
| uint32_t XX = *bitmapXY++; |
| unsigned x0 = XX >> 18; |
| unsigned x1 = XX & 0x3FFF; |
| SkASSERT(x0 < mx); |
| SkASSERT(x1 < mx); |
| } |
| } |
| |
| void SkBitmapProcState::DebugMatrixProc(const SkBitmapProcState& state, |
| uint32_t bitmapXY[], int count, |
| int x, int y) { |
| SkASSERT(bitmapXY); |
| SkASSERT(count > 0); |
| |
| state.fMatrixProc(state, bitmapXY, count, x, y); |
| |
| void (*proc)(uint32_t bitmapXY[], int count, unsigned mx, unsigned my); |
| |
| // There are four formats possible: |
| // scale -vs- affine |
| // filter -vs- nofilter |
| if (state.fInvType <= (SkMatrix::kTranslate_Mask | SkMatrix::kScale_Mask)) { |
| proc = state.fDoFilter ? check_scale_filter : check_scale_nofilter; |
| } else { |
| proc = state.fDoFilter ? check_affine_filter : check_affine_nofilter; |
| } |
| proc(bitmapXY, count, state.fBitmap->width(), state.fBitmap->height()); |
| } |
| |
| SkBitmapProcState::MatrixProc SkBitmapProcState::getMatrixProc() const { |
| return DebugMatrixProc; |
| } |
| |
| #endif |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| /* |
| The storage requirements for the different matrix procs are as follows, |
| where each X or Y is 2 bytes, and N is the number of pixels/elements: |
| |
| scale/translate nofilter Y(4bytes) + N * X |
| affine/perspective nofilter N * (X Y) |
| scale/translate filter Y Y + N * (X X) |
| affine/perspective filter N * (Y Y X X) |
| */ |
| int SkBitmapProcState::maxCountForBufferSize(size_t bufferSize) const { |
| int32_t size = static_cast<int32_t>(bufferSize); |
| |
| size &= ~3; // only care about 4-byte aligned chunks |
| if (fInvType <= (SkMatrix::kTranslate_Mask | SkMatrix::kScale_Mask)) { |
| size -= 4; // the shared Y (or YY) coordinate |
| if (size < 0) { |
| size = 0; |
| } |
| size >>= 1; |
| } else { |
| size >>= 2; |
| } |
| |
| if (fDoFilter) { |
| size >>= 1; |
| } |
| |
| return size; |
| } |
