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-rw-r--r--src/core/SkBitmapProcState_matrix.h271
1 files changed, 271 insertions, 0 deletions
diff --git a/src/core/SkBitmapProcState_matrix.h b/src/core/SkBitmapProcState_matrix.h
new file mode 100644
index 0000000..f54f8b1
--- /dev/null
+++ b/src/core/SkBitmapProcState_matrix.h
@@ -0,0 +1,271 @@
+
+#define SCALE_NOFILTER_NAME MAKENAME(_nofilter_scale)
+#define SCALE_FILTER_NAME MAKENAME(_filter_scale)
+#define AFFINE_NOFILTER_NAME MAKENAME(_nofilter_affine)
+#define AFFINE_FILTER_NAME MAKENAME(_filter_affine)
+#define PERSP_NOFILTER_NAME MAKENAME(_nofilter_persp)
+#define PERSP_FILTER_NAME MAKENAME(_filter_persp)
+
+#define PACK_FILTER_X_NAME MAKENAME(_pack_filter_x)
+#define PACK_FILTER_Y_NAME MAKENAME(_pack_filter_y)
+
+#ifndef PREAMBLE
+ #define PREAMBLE(state)
+ #define PREAMBLE_PARAM_X
+ #define PREAMBLE_PARAM_Y
+ #define PREAMBLE_ARG_X
+ #define PREAMBLE_ARG_Y
+#endif
+
+static void SCALE_NOFILTER_NAME(const SkBitmapProcState& s,
+ uint32_t xy[], int count, int x, int y) {
+ SkASSERT((s.fInvType & ~(SkMatrix::kTranslate_Mask |
+ SkMatrix::kScale_Mask)) == 0);
+
+ PREAMBLE(s);
+ // we store y, x, x, x, x, x
+
+ const unsigned maxX = s.fBitmap->width() - 1;
+ const SkFixed dx = s.fInvSx;
+ SkFixed fx;
+ {
+ SkPoint pt;
+ s.fInvProc(*s.fInvMatrix, SkIntToScalar(x) + SK_ScalarHalf,
+ SkIntToScalar(y) + SK_ScalarHalf, &pt);
+ fx = SkScalarToFixed(pt.fY);
+ const unsigned maxY = s.fBitmap->height() - 1;
+ *xy++ = TILEY_PROCF(fx, maxY);
+ fx = SkScalarToFixed(pt.fX);
+ }
+
+#ifdef CHECK_FOR_DECAL
+ // test if we don't need to apply the tile proc
+ if ((unsigned)(fx >> 16) <= maxX &&
+ (unsigned)((fx + dx * (count - 1)) >> 16) <= maxX) {
+ decal_nofilter_scale(xy, fx, dx, count);
+ } else
+#endif
+ {
+ int i;
+ for (i = (count >> 2); i > 0; --i) {
+ unsigned a, b;
+ a = TILEX_PROCF(fx, maxX); fx += dx;
+ b = TILEX_PROCF(fx, maxX); fx += dx;
+#ifdef SK_CPU_BENDIAN
+ *xy++ = (a << 16) | b;
+#else
+ *xy++ = (b << 16) | a;
+#endif
+ a = TILEX_PROCF(fx, maxX); fx += dx;
+ b = TILEX_PROCF(fx, maxX); fx += dx;
+#ifdef SK_CPU_BENDIAN
+ *xy++ = (a << 16) | b;
+#else
+ *xy++ = (b << 16) | a;
+#endif
+ }
+ uint16_t* xx = (uint16_t*)xy;
+ for (i = (count & 3); i > 0; --i) {
+ *xx++ = TILEX_PROCF(fx, maxX); fx += dx;
+ }
+ }
+}
+
+// note: we could special-case on a matrix which is skewed in X but not Y.
+// this would require a more general setup thatn SCALE does, but could use
+// SCALE's inner loop that only looks at dx
+
+static void AFFINE_NOFILTER_NAME(const SkBitmapProcState& s,
+ uint32_t xy[], int count, int x, int y) {
+ SkASSERT(s.fInvType & SkMatrix::kAffine_Mask);
+ SkASSERT((s.fInvType & ~(SkMatrix::kTranslate_Mask |
+ SkMatrix::kScale_Mask |
+ SkMatrix::kAffine_Mask)) == 0);
+
+ PREAMBLE(s);
+ SkPoint srcPt;
+ s.fInvProc(*s.fInvMatrix,
+ SkIntToScalar(x) + SK_ScalarHalf,
+ SkIntToScalar(y) + SK_ScalarHalf, &srcPt);
+
+ SkFixed fx = SkScalarToFixed(srcPt.fX);
+ SkFixed fy = SkScalarToFixed(srcPt.fY);
+ SkFixed dx = s.fInvSx;
+ SkFixed dy = s.fInvKy;
+ int maxX = s.fBitmap->width() - 1;
+ int maxY = s.fBitmap->height() - 1;
+
+ for (int i = count; i > 0; --i) {
+ *xy++ = (TILEY_PROCF(fy, maxY) << 16) | TILEX_PROCF(fx, maxX);
+ fx += dx; fy += dy;
+ }
+}
+
+static void PERSP_NOFILTER_NAME(const SkBitmapProcState& s,
+ uint32_t* SK_RESTRICT xy,
+ int count, int x, int y) {
+ SkASSERT(s.fInvType & SkMatrix::kPerspective_Mask);
+
+ PREAMBLE(s);
+ int maxX = s.fBitmap->width() - 1;
+ int maxY = s.fBitmap->height() - 1;
+
+ SkPerspIter iter(*s.fInvMatrix,
+ SkIntToScalar(x) + SK_ScalarHalf,
+ SkIntToScalar(y) + SK_ScalarHalf, count);
+
+ while ((count = iter.next()) != 0) {
+ const SkFixed* SK_RESTRICT srcXY = iter.getXY();
+ while (--count >= 0) {
+ *xy++ = (TILEY_PROCF(srcXY[1], maxY) << 16) |
+ TILEX_PROCF(srcXY[0], maxX);
+ srcXY += 2;
+ }
+ }
+}
+
+//////////////////////////////////////////////////////////////////////////////
+
+static inline uint32_t PACK_FILTER_Y_NAME(SkFixed f, unsigned max,
+ SkFixed one PREAMBLE_PARAM_Y) {
+ unsigned i = TILEY_PROCF(f, max);
+ i = (i << 4) | TILEY_LOW_BITS(f, max);
+ return (i << 14) | (TILEY_PROCF((f + one), max));
+}
+
+static inline uint32_t PACK_FILTER_X_NAME(SkFixed f, unsigned max,
+ SkFixed one PREAMBLE_PARAM_X) {
+ unsigned i = TILEX_PROCF(f, max);
+ i = (i << 4) | TILEX_LOW_BITS(f, max);
+ return (i << 14) | (TILEX_PROCF((f + one), max));
+}
+
+static void SCALE_FILTER_NAME(const SkBitmapProcState& s,
+ uint32_t xy[], int count, int x, int y) {
+ SkASSERT((s.fInvType & ~(SkMatrix::kTranslate_Mask |
+ SkMatrix::kScale_Mask)) == 0);
+ SkASSERT(s.fInvKy == 0);
+
+ PREAMBLE(s);
+
+ const unsigned maxX = s.fBitmap->width() - 1;
+ const SkFixed one = s.fFilterOneX;
+ const SkFixed dx = s.fInvSx;
+ SkFixed fx;
+
+ {
+ SkPoint pt;
+ s.fInvProc(*s.fInvMatrix, SkIntToScalar(x) + SK_ScalarHalf,
+ SkIntToScalar(y) + SK_ScalarHalf, &pt);
+ const SkFixed fy = SkScalarToFixed(pt.fY) - (s.fFilterOneY >> 1);
+ const unsigned maxY = s.fBitmap->height() - 1;
+ // compute our two Y values up front
+ *xy++ = PACK_FILTER_Y_NAME(fy, maxY, s.fFilterOneY PREAMBLE_ARG_Y);
+ // now initialize fx
+ fx = SkScalarToFixed(pt.fX) - (one >> 1);
+ }
+
+#ifdef CHECK_FOR_DECAL
+ // test if we don't need to apply the tile proc
+ if (dx > 0 &&
+ (unsigned)(fx >> 16) <= maxX &&
+ (unsigned)((fx + dx * (count - 1)) >> 16) < maxX) {
+ decal_filter_scale(xy, fx, dx, count);
+ } else
+#endif
+ {
+ do {
+ *xy++ = PACK_FILTER_X_NAME(fx, maxX, one PREAMBLE_ARG_X);
+ fx += dx;
+ } while (--count != 0);
+ }
+}
+
+static void AFFINE_FILTER_NAME(const SkBitmapProcState& s,
+ uint32_t xy[], int count, int x, int y) {
+ SkASSERT(s.fInvType & SkMatrix::kAffine_Mask);
+ SkASSERT((s.fInvType & ~(SkMatrix::kTranslate_Mask |
+ SkMatrix::kScale_Mask |
+ SkMatrix::kAffine_Mask)) == 0);
+
+ PREAMBLE(s);
+ SkPoint srcPt;
+ s.fInvProc(*s.fInvMatrix,
+ SkIntToScalar(x) + SK_ScalarHalf,
+ SkIntToScalar(y) + SK_ScalarHalf, &srcPt);
+
+ SkFixed oneX = s.fFilterOneX;
+ SkFixed oneY = s.fFilterOneY;
+ SkFixed fx = SkScalarToFixed(srcPt.fX) - (oneX >> 1);
+ SkFixed fy = SkScalarToFixed(srcPt.fY) - (oneY >> 1);
+ SkFixed dx = s.fInvSx;
+ SkFixed dy = s.fInvKy;
+ unsigned maxX = s.fBitmap->width() - 1;
+ unsigned maxY = s.fBitmap->height() - 1;
+
+ do {
+ *xy++ = PACK_FILTER_Y_NAME(fy, maxY, oneY PREAMBLE_ARG_Y);
+ fy += dy;
+ *xy++ = PACK_FILTER_X_NAME(fx, maxX, oneX PREAMBLE_ARG_X);
+ fx += dx;
+ } while (--count != 0);
+}
+
+static void PERSP_FILTER_NAME(const SkBitmapProcState& s,
+ uint32_t* SK_RESTRICT xy, int count,
+ int x, int y) {
+ SkASSERT(s.fInvType & SkMatrix::kPerspective_Mask);
+
+ PREAMBLE(s);
+ unsigned maxX = s.fBitmap->width() - 1;
+ unsigned maxY = s.fBitmap->height() - 1;
+ SkFixed oneX = s.fFilterOneX;
+ SkFixed oneY = s.fFilterOneY;
+
+ SkPerspIter iter(*s.fInvMatrix,
+ SkIntToScalar(x) + SK_ScalarHalf,
+ SkIntToScalar(y) + SK_ScalarHalf, count);
+
+ while ((count = iter.next()) != 0) {
+ const SkFixed* SK_RESTRICT srcXY = iter.getXY();
+ do {
+ *xy++ = PACK_FILTER_Y_NAME(srcXY[1] - (oneY >> 1), maxY,
+ oneY PREAMBLE_ARG_Y);
+ *xy++ = PACK_FILTER_X_NAME(srcXY[0] - (oneX >> 1), maxX,
+ oneX PREAMBLE_ARG_X);
+ srcXY += 2;
+ } while (--count != 0);
+ }
+}
+
+static SkBitmapProcState::MatrixProc MAKENAME(_Procs)[] = {
+ SCALE_NOFILTER_NAME,
+ SCALE_FILTER_NAME,
+ AFFINE_NOFILTER_NAME,
+ AFFINE_FILTER_NAME,
+ PERSP_NOFILTER_NAME,
+ PERSP_FILTER_NAME
+};
+
+#undef MAKENAME
+#undef TILEX_PROCF
+#undef TILEY_PROCF
+#ifdef CHECK_FOR_DECAL
+ #undef CHECK_FOR_DECAL
+#endif
+
+#undef SCALE_NOFILTER_NAME
+#undef SCALE_FILTER_NAME
+#undef AFFINE_NOFILTER_NAME
+#undef AFFINE_FILTER_NAME
+#undef PERSP_NOFILTER_NAME
+#undef PERSP_FILTER_NAME
+
+#undef PREAMBLE
+#undef PREAMBLE_PARAM_X
+#undef PREAMBLE_PARAM_Y
+#undef PREAMBLE_ARG_X
+#undef PREAMBLE_ARG_Y
+
+#undef TILEX_LOW_BITS
+#undef TILEY_LOW_BITS
generated by cgit v1.1 at 2024-12-22 18:41:51 +0000