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1 /* | 1 /* |
2 * Copyright 2011 Google Inc. | 2 * Copyright 2011 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 #include "SkBitmapCache.h" | 8 #include "SkBitmapCache.h" |
9 #include "SkBitmapController.h" | 9 #include "SkBitmapController.h" |
10 #include "SkBitmapProcState.h" | 10 #include "SkBitmapProcState.h" |
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580 } | 580 } |
581 | 581 |
582 static void DoNothing_shaderproc(const void*, int x, int y, | 582 static void DoNothing_shaderproc(const void*, int x, int y, |
583 SkPMColor* SK_RESTRICT colors, int count) { | 583 SkPMColor* SK_RESTRICT colors, int count) { |
584 // if we get called, the matrix is too tricky, so we just draw nothing | 584 // if we get called, the matrix is too tricky, so we just draw nothing |
585 sk_memset32(colors, 0, count); | 585 sk_memset32(colors, 0, count); |
586 } | 586 } |
587 | 587 |
588 bool SkBitmapProcState::setupForTranslate() { | 588 bool SkBitmapProcState::setupForTranslate() { |
589 SkPoint pt; | 589 SkPoint pt; |
590 | |
591 #ifdef SK_SUPPORT_LEGACY_SAMPLER_BIAS | |
592 fInvProc(fInvMatrix, SK_ScalarHalf, SK_ScalarHalf, &pt); | |
593 #else | |
594 const SkBitmapProcStateAutoMapper mapper(*this, 0, 0, &pt); | 590 const SkBitmapProcStateAutoMapper mapper(*this, 0, 0, &pt); |
595 #endif | |
596 | 591 |
597 /* | 592 /* |
598 * if the translate is larger than our ints, we can get random results, or | 593 * if the translate is larger than our ints, we can get random results, or |
599 * worse, we might get 0x80000000, which wreaks havoc on us, since we can't | 594 * worse, we might get 0x80000000, which wreaks havoc on us, since we can't |
600 * negate it. | 595 * negate it. |
601 */ | 596 */ |
602 const SkScalar too_big = SkIntToScalar(1 << 30); | 597 const SkScalar too_big = SkIntToScalar(1 << 30); |
603 if (SkScalarAbs(pt.fX) > too_big || SkScalarAbs(pt.fY) > too_big) { | 598 if (SkScalarAbs(pt.fX) > too_big || SkScalarAbs(pt.fY) > too_big) { |
604 return false; | 599 return false; |
605 } | 600 } |
606 | 601 |
607 #ifdef SK_SUPPORT_LEGACY_SAMPLER_BIAS | |
608 fFilterOneX = SkScalarFloorToInt(pt.fX); | |
609 fFilterOneY = SkScalarFloorToInt(pt.fY); | |
610 #else | |
611 // Since we know we're not filtered, we re-purpose these fields allow | 602 // Since we know we're not filtered, we re-purpose these fields allow |
612 // us to go from device -> src coordinates w/ just an integer add, | 603 // us to go from device -> src coordinates w/ just an integer add, |
613 // rather than running through the inverse-matrix | 604 // rather than running through the inverse-matrix |
614 fFilterOneX = SkFractionalIntToInt(mapper.x()); | 605 fFilterOneX = SkFractionalIntToInt(mapper.x()); |
615 fFilterOneY = SkFractionalIntToInt(mapper.y()); | 606 fFilterOneY = SkFractionalIntToInt(mapper.y()); |
616 #endif | |
617 | 607 |
618 return true; | 608 return true; |
619 } | 609 } |
620 | 610 |
621 SkBitmapProcState::ShaderProc32 SkBitmapProcState::chooseShaderProc32() { | 611 SkBitmapProcState::ShaderProc32 SkBitmapProcState::chooseShaderProc32() { |
622 | 612 |
623 if (kN32_SkColorType != fPixmap.colorType()) { | 613 if (kN32_SkColorType != fPixmap.colorType()) { |
624 return nullptr; | 614 return nullptr; |
625 } | 615 } |
626 | 616 |
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826 fx += dx; | 816 fx += dx; |
827 } | 817 } |
828 } else { | 818 } else { |
829 for (int i = 0; i < count; ++i) { | 819 for (int i = 0; i < count; ++i) { |
830 dst[i] = src[SkClampMax(SkFractionalIntToInt(fx), maxX)]; | 820 dst[i] = src[SkClampMax(SkFractionalIntToInt(fx), maxX)]; |
831 fx += dx; | 821 fx += dx; |
832 } | 822 } |
833 } | 823 } |
834 } | 824 } |
835 | 825 |
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