| |
| /* |
| * 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 "SkBitmapProcState_filter.h" |
| #include "SkColorPriv.h" |
| #include "SkFilterProc.h" |
| #include "SkPaint.h" |
| #include "SkShader.h" // for tilemodes |
| |
| // returns expanded * 5bits |
| static inline uint32_t Filter_565_Expanded(unsigned x, unsigned y, |
| uint32_t a00, uint32_t a01, |
| uint32_t a10, uint32_t a11) { |
| SkASSERT((unsigned)x <= 0xF); |
| SkASSERT((unsigned)y <= 0xF); |
| |
| a00 = SkExpand_rgb_16(a00); |
| a01 = SkExpand_rgb_16(a01); |
| a10 = SkExpand_rgb_16(a10); |
| a11 = SkExpand_rgb_16(a11); |
| |
| int xy = x * y >> 3; |
| return a00 * (32 - 2*y - 2*x + xy) + |
| a01 * (2*x - xy) + |
| a10 * (2*y - xy) + |
| a11 * xy; |
| } |
| |
| // turn an expanded 565 * 5bits into SkPMColor |
| // g:11 | r:10 | x:1 | b:10 |
| static inline SkPMColor SkExpanded_565_To_PMColor(uint32_t c) { |
| unsigned r = (c >> 13) & 0xFF; |
| unsigned g = (c >> 24); |
| unsigned b = (c >> 2) & 0xFF; |
| return SkPackARGB32(0xFF, r, g, b); |
| } |
| |
| // returns answer in SkPMColor format |
| static inline SkPMColor Filter_4444_D32(unsigned x, unsigned y, |
| uint32_t a00, uint32_t a01, |
| uint32_t a10, uint32_t a11) { |
| SkASSERT((unsigned)x <= 0xF); |
| SkASSERT((unsigned)y <= 0xF); |
| |
| a00 = SkExpand_4444(a00); |
| a01 = SkExpand_4444(a01); |
| a10 = SkExpand_4444(a10); |
| a11 = SkExpand_4444(a11); |
| |
| int xy = x * y >> 4; |
| uint32_t result = a00 * (16 - y - x + xy) + |
| a01 * (x - xy) + |
| a10 * (y - xy) + |
| a11 * xy; |
| |
| return SkCompact_8888(result); |
| } |
| |
| static inline U8CPU Filter_8(unsigned x, unsigned y, |
| U8CPU a00, U8CPU a01, |
| U8CPU a10, U8CPU a11) { |
| SkASSERT((unsigned)x <= 0xF); |
| SkASSERT((unsigned)y <= 0xF); |
| |
| int xy = x * y; |
| unsigned result = a00 * (256 - 16*y - 16*x + xy) + |
| a01 * (16*x - xy) + |
| a10 * (16*y - xy) + |
| a11 * xy; |
| |
| return result >> 8; |
| } |
| |
| /***************************************************************************** |
| * |
| * D32 functions |
| * |
| */ |
| |
| // SRC == 8888 |
| |
| #define FILTER_PROC(x, y, a, b, c, d, dst) Filter_32_opaque(x, y, a, b, c, d, dst) |
| |
| #define MAKENAME(suffix) S32_opaque_D32 ## suffix |
| #define DSTSIZE 32 |
| #define SRCTYPE SkPMColor |
| #define CHECKSTATE(state) SkASSERT(state.fBitmap->config() == SkBitmap::kARGB_8888_Config); \ |
| SkASSERT(state.fAlphaScale == 256) |
| #define RETURNDST(src) src |
| #define SRC_TO_FILTER(src) src |
| #include "SkBitmapProcState_sample.h" |
| |
| #undef FILTER_PROC |
| #define FILTER_PROC(x, y, a, b, c, d, dst) Filter_32_alpha(x, y, a, b, c, d, dst, alphaScale) |
| |
| #define MAKENAME(suffix) S32_alpha_D32 ## suffix |
| #define DSTSIZE 32 |
| #define SRCTYPE SkPMColor |
| #define CHECKSTATE(state) SkASSERT(state.fBitmap->config() == SkBitmap::kARGB_8888_Config); \ |
| SkASSERT(state.fAlphaScale < 256) |
| #define PREAMBLE(state) unsigned alphaScale = state.fAlphaScale |
| #define RETURNDST(src) SkAlphaMulQ(src, alphaScale) |
| #define SRC_TO_FILTER(src) src |
| #include "SkBitmapProcState_sample.h" |
| |
| // SRC == 565 |
| |
| #undef FILTER_PROC |
| #define FILTER_PROC(x, y, a, b, c, d, dst) \ |
| do { \ |
| uint32_t tmp = Filter_565_Expanded(x, y, a, b, c, d); \ |
| *(dst) = SkExpanded_565_To_PMColor(tmp); \ |
| } while (0) |
| |
| #define MAKENAME(suffix) S16_opaque_D32 ## suffix |
| #define DSTSIZE 32 |
| #define SRCTYPE uint16_t |
| #define CHECKSTATE(state) SkASSERT(state.fBitmap->config() == SkBitmap::kRGB_565_Config); \ |
| SkASSERT(state.fAlphaScale == 256) |
| #define RETURNDST(src) SkPixel16ToPixel32(src) |
| #define SRC_TO_FILTER(src) src |
| #include "SkBitmapProcState_sample.h" |
| |
| #undef FILTER_PROC |
| #define FILTER_PROC(x, y, a, b, c, d, dst) \ |
| do { \ |
| uint32_t tmp = Filter_565_Expanded(x, y, a, b, c, d); \ |
| *(dst) = SkAlphaMulQ(SkExpanded_565_To_PMColor(tmp), alphaScale); \ |
| } while (0) |
| |
| #define MAKENAME(suffix) S16_alpha_D32 ## suffix |
| #define DSTSIZE 32 |
| #define SRCTYPE uint16_t |
| #define CHECKSTATE(state) SkASSERT(state.fBitmap->config() == SkBitmap::kRGB_565_Config); \ |
| SkASSERT(state.fAlphaScale < 256) |
| #define PREAMBLE(state) unsigned alphaScale = state.fAlphaScale |
| #define RETURNDST(src) SkAlphaMulQ(SkPixel16ToPixel32(src), alphaScale) |
| #define SRC_TO_FILTER(src) src |
| #include "SkBitmapProcState_sample.h" |
| |
| // SRC == Index8 |
| |
| #undef FILTER_PROC |
| #define FILTER_PROC(x, y, a, b, c, d, dst) Filter_32_opaque(x, y, a, b, c, d, dst) |
| |
| #define MAKENAME(suffix) SI8_opaque_D32 ## suffix |
| #define DSTSIZE 32 |
| #define SRCTYPE uint8_t |
| #define CHECKSTATE(state) SkASSERT(state.fBitmap->config() == SkBitmap::kIndex8_Config); \ |
| SkASSERT(state.fAlphaScale == 256) |
| #define PREAMBLE(state) const SkPMColor* SK_RESTRICT table = state.fBitmap->getColorTable()->lockColors() |
| #define RETURNDST(src) table[src] |
| #define SRC_TO_FILTER(src) table[src] |
| #define POSTAMBLE(state) state.fBitmap->getColorTable()->unlockColors(false) |
| #include "SkBitmapProcState_sample.h" |
| |
| #undef FILTER_PROC |
| #define FILTER_PROC(x, y, a, b, c, d, dst) Filter_32_alpha(x, y, a, b, c, d, dst, alphaScale) |
| |
| #define MAKENAME(suffix) SI8_alpha_D32 ## suffix |
| #define DSTSIZE 32 |
| #define SRCTYPE uint8_t |
| #define CHECKSTATE(state) SkASSERT(state.fBitmap->config() == SkBitmap::kIndex8_Config); \ |
| SkASSERT(state.fAlphaScale < 256) |
| #define PREAMBLE(state) unsigned alphaScale = state.fAlphaScale; \ |
| const SkPMColor* SK_RESTRICT table = state.fBitmap->getColorTable()->lockColors() |
| #define RETURNDST(src) SkAlphaMulQ(table[src], alphaScale) |
| #define SRC_TO_FILTER(src) table[src] |
| #define POSTAMBLE(state) state.fBitmap->getColorTable()->unlockColors(false) |
| #include "SkBitmapProcState_sample.h" |
| |
| // SRC == 4444 |
| |
| #undef FILTER_PROC |
| #define FILTER_PROC(x, y, a, b, c, d, dst) *(dst) = Filter_4444_D32(x, y, a, b, c, d) |
| |
| #define MAKENAME(suffix) S4444_opaque_D32 ## suffix |
| #define DSTSIZE 32 |
| #define SRCTYPE SkPMColor16 |
| #define CHECKSTATE(state) SkASSERT(state.fBitmap->config() == SkBitmap::kARGB_4444_Config); \ |
| SkASSERT(state.fAlphaScale == 256) |
| #define RETURNDST(src) SkPixel4444ToPixel32(src) |
| #define SRC_TO_FILTER(src) src |
| #include "SkBitmapProcState_sample.h" |
| |
| #undef FILTER_PROC |
| #define FILTER_PROC(x, y, a, b, c, d, dst) \ |
| do { \ |
| uint32_t tmp = Filter_4444_D32(x, y, a, b, c, d); \ |
| *(dst) = SkAlphaMulQ(tmp, alphaScale); \ |
| } while (0) |
| |
| #define MAKENAME(suffix) S4444_alpha_D32 ## suffix |
| #define DSTSIZE 32 |
| #define SRCTYPE SkPMColor16 |
| #define CHECKSTATE(state) SkASSERT(state.fBitmap->config() == SkBitmap::kARGB_4444_Config); \ |
| SkASSERT(state.fAlphaScale < 256) |
| #define PREAMBLE(state) unsigned alphaScale = state.fAlphaScale |
| #define RETURNDST(src) SkAlphaMulQ(SkPixel4444ToPixel32(src), alphaScale) |
| #define SRC_TO_FILTER(src) src |
| #include "SkBitmapProcState_sample.h" |
| |
| // SRC == A8 |
| |
| #undef FILTER_PROC |
| #define FILTER_PROC(x, y, a, b, c, d, dst) \ |
| do { \ |
| unsigned tmp = Filter_8(x, y, a, b, c, d); \ |
| *(dst) = SkAlphaMulQ(pmColor, SkAlpha255To256(tmp)); \ |
| } while (0) |
| |
| #define MAKENAME(suffix) SA8_alpha_D32 ## suffix |
| #define DSTSIZE 32 |
| #define SRCTYPE uint8_t |
| #define CHECKSTATE(state) SkASSERT(state.fBitmap->config() == SkBitmap::kA8_Config); \ |
| SkASSERT(state.fAlphaScale == 256) |
| #define PREAMBLE(state) const SkPMColor pmColor = state.fPaintPMColor; |
| #define RETURNDST(src) SkAlphaMulQ(pmColor, SkAlpha255To256(src)) |
| #define SRC_TO_FILTER(src) src |
| #include "SkBitmapProcState_sample.h" |
| |
| /***************************************************************************** |
| * |
| * D16 functions |
| * |
| */ |
| |
| // SRC == 8888 |
| |
| #undef FILTER_PROC |
| #define FILTER_PROC(x, y, a, b, c, d, dst) \ |
| do { \ |
| SkPMColor dstColor; \ |
| Filter_32_opaque(x, y, a, b, c, d, &dstColor); \ |
| (*dst) = SkPixel32ToPixel16(dstColor); \ |
| } while (0) |
| |
| #define MAKENAME(suffix) S32_D16 ## suffix |
| #define DSTSIZE 16 |
| #define SRCTYPE SkPMColor |
| #define CHECKSTATE(state) SkASSERT(state.fBitmap->config() == SkBitmap::kARGB_8888_Config); \ |
| SkASSERT(state.fBitmap->isOpaque()) |
| #define RETURNDST(src) SkPixel32ToPixel16(src) |
| #define SRC_TO_FILTER(src) src |
| #include "SkBitmapProcState_sample.h" |
| |
| // SRC == 565 |
| |
| #undef FILTER_PROC |
| #define FILTER_PROC(x, y, a, b, c, d, dst) \ |
| do { \ |
| uint32_t tmp = Filter_565_Expanded(x, y, a, b, c, d); \ |
| *(dst) = SkCompact_rgb_16((tmp) >> 5); \ |
| } while (0) |
| |
| #define MAKENAME(suffix) S16_D16 ## suffix |
| #define DSTSIZE 16 |
| #define SRCTYPE uint16_t |
| #define CHECKSTATE(state) SkASSERT(state.fBitmap->config() == SkBitmap::kRGB_565_Config) |
| #define RETURNDST(src) src |
| #define SRC_TO_FILTER(src) src |
| #include "SkBitmapProcState_sample.h" |
| |
| // SRC == Index8 |
| |
| #undef FILTER_PROC |
| #define FILTER_PROC(x, y, a, b, c, d, dst) \ |
| do { \ |
| uint32_t tmp = Filter_565_Expanded(x, y, a, b, c, d); \ |
| *(dst) = SkCompact_rgb_16((tmp) >> 5); \ |
| } while (0) |
| |
| #define MAKENAME(suffix) SI8_D16 ## suffix |
| #define DSTSIZE 16 |
| #define SRCTYPE uint8_t |
| #define CHECKSTATE(state) SkASSERT(state.fBitmap->config() == SkBitmap::kIndex8_Config); \ |
| SkASSERT(state.fBitmap->isOpaque()) |
| #define PREAMBLE(state) const uint16_t* SK_RESTRICT table = state.fBitmap->getColorTable()->lock16BitCache() |
| #define RETURNDST(src) table[src] |
| #define SRC_TO_FILTER(src) table[src] |
| #define POSTAMBLE(state) state.fBitmap->getColorTable()->unlock16BitCache() |
| #include "SkBitmapProcState_sample.h" |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| #undef FILTER_PROC |
| #define FILTER_PROC(x, y, a, b, c, d, dst) \ |
| do { \ |
| uint32_t tmp = Filter_565_Expanded(x, y, a, b, c, d); \ |
| *(dst) = SkCompact_rgb_16((tmp) >> 5); \ |
| } while (0) |
| |
| |
| // clamp |
| |
| #define TILEX_PROCF(fx, max) SkClampMax((fx) >> 16, max) |
| #define TILEY_PROCF(fy, max) SkClampMax((fy) >> 16, max) |
| #define TILEX_LOW_BITS(fx, max) (((fx) >> 12) & 0xF) |
| #define TILEY_LOW_BITS(fy, max) (((fy) >> 12) & 0xF) |
| |
| #define MAKENAME(suffix) Clamp_S16_D16 ## suffix |
| #define SRCTYPE uint16_t |
| #define DSTTYPE uint16_t |
| #define CHECKSTATE(state) SkASSERT(state.fBitmap->config() == SkBitmap::kRGB_565_Config) |
| #define SRC_TO_FILTER(src) src |
| #include "SkBitmapProcState_shaderproc.h" |
| |
| |
| #define TILEX_PROCF(fx, max) (((fx) & 0xFFFF) * ((max) + 1) >> 16) |
| #define TILEY_PROCF(fy, max) (((fy) & 0xFFFF) * ((max) + 1) >> 16) |
| #define TILEX_LOW_BITS(fx, max) ((((fx) & 0xFFFF) * ((max) + 1) >> 12) & 0xF) |
| #define TILEY_LOW_BITS(fy, max) ((((fy) & 0xFFFF) * ((max) + 1) >> 12) & 0xF) |
| |
| #define MAKENAME(suffix) Repeat_S16_D16 ## suffix |
| #define SRCTYPE uint16_t |
| #define DSTTYPE uint16_t |
| #define CHECKSTATE(state) SkASSERT(state.fBitmap->config() == SkBitmap::kRGB_565_Config) |
| #define SRC_TO_FILTER(src) src |
| #include "SkBitmapProcState_shaderproc.h" |
| |
| |
| #define TILEX_PROCF(fx, max) SkClampMax((fx) >> 16, max) |
| #define TILEY_PROCF(fy, max) SkClampMax((fy) >> 16, max) |
| #define TILEX_LOW_BITS(fx, max) (((fx) >> 12) & 0xF) |
| #define TILEY_LOW_BITS(fy, max) (((fy) >> 12) & 0xF) |
| |
| #undef FILTER_PROC |
| #define FILTER_PROC(x, y, a, b, c, d, dst) Filter_32_opaque(x, y, a, b, c, d, dst) |
| #define MAKENAME(suffix) Clamp_SI8_opaque_D32 ## suffix |
| #define SRCTYPE uint8_t |
| #define DSTTYPE uint32_t |
| #define CHECKSTATE(state) SkASSERT(state.fBitmap->config() == SkBitmap::kIndex8_Config) |
| #define PREAMBLE(state) const SkPMColor* SK_RESTRICT table = state.fBitmap->getColorTable()->lockColors() |
| #define SRC_TO_FILTER(src) table[src] |
| #define POSTAMBLE(state) state.fBitmap->getColorTable()->unlockColors(false) |
| #include "SkBitmapProcState_shaderproc.h" |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| 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; |
| } |
| } |
| |
| fInvMatrix = m; |
| fInvProc = m->getMapXYProc(); |
| fInvType = m->getType(); |
| fInvSx = SkScalarToFixed(m->getScaleX()); |
| fInvKy = SkScalarToFixed(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() && |
| (inv.getType() > 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; |
| } |
| |
| static const SampleProc32 gSample32[] = { |
| 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/opauqe 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 gSample16[] = { |
| 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 |
| }; |
| |
| fSampleProc32 = gSample32[index]; |
| index >>= 1; // shift away any opaque/alpha distinction |
| fSampleProc16 = gSample16[index]; |
| |
| // our special-case shaderprocs |
| if (S16_D16_filter_DX == fSampleProc16) { |
| if (clamp_clamp) { |
| fShaderProc16 = Clamp_S16_D16_filter_DX_shaderproc; |
| } else if (SkShader::kRepeat_TileMode == fTileModeX && |
| SkShader::kRepeat_TileMode == fTileModeY) { |
| fShaderProc16 = Repeat_S16_D16_filter_DX_shaderproc; |
| } |
| } else if (SI8_opaque_D32_filter_DX == fSampleProc32 && clamp_clamp) { |
| fShaderProc32 = Clamp_SI8_opaque_D32_filter_DX_shaderproc; |
| } |
| |
| // see if our platform has any accelerated overrides |
| this->platformProcs(); |
| return true; |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| /* |
| 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; |
| } |
| |
