Fix the Facebook sidebar....

skia/sgl/SkBitmapProcState_matrixProcs.cpp

Index: skia/sgl/SkBitmapProcState_matrixProcs.cpp
===================================================================
--- skia/sgl/SkBitmapProcState_matrixProcs.cpp	(revision 9831)
+++ skia/sgl/SkBitmapProcState_matrixProcs.cpp	(working copy)
@@ -28,6 +28,8 @@
 #define TILEX_LOW_BITS(fx, max) (((fx) >> 12) & 0xF)
 #define TILEY_LOW_BITS(fy, max) (((fy) >> 12) & 0xF)
 #define CHECK_FOR_DECAL
+#define TILEX_TRANS(x, max)     SkClampMax(x, max)
+#define TILEY_TRANS(y, max)     SkClampMax(y, max)
 #include "SkBitmapProcState_matrix.h"
 
 #define MAKENAME(suffix)        RepeatX_RepeatY ## suffix
@@ -35,6 +37,8 @@
 #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 TILEX_TRANS(x, max)     ((x) % ((max) + 1))
+#define TILEY_TRANS(y, max)     ((y) % ((max) + 1))
 #include "SkBitmapProcState_matrix.h"
 
 #define MAKENAME(suffix)        GeneralXY ## suffix
@@ -44,13 +48,19 @@
 #define PREAMBLE_PARAM_Y        , SkBitmapProcState::FixedTileProc tileProcY
 #define PREAMBLE_ARG_X          , tileProcX
 #define PREAMBLE_ARG_Y          , tileProcY
-#define TILEX_PROCF(fx, max)    (tileProcX(fx) * ((max) + 1) >> 16)
-#define TILEY_PROCF(fy, max)    (tileProcY(fy) * ((max) + 1) >> 16)
-#define TILEX_LOW_BITS(fx, max) ((tileProcX(fx) * ((max) + 1) >> 12) & 0xF)
-#define TILEY_LOW_BITS(fy, max) ((tileProcY(fy) * ((max) + 1) >> 12) & 0xF)
+#define TILEX_PROCF(fx, max)    (tileProcX(fx, max) >> 16)
+#define TILEY_PROCF(fy, max)    (tileProcY(fy, max) >> 16)
+#define TILEX_LOW_BITS(fx, max) ((tileProcX(fx, max) >> 14) & 0x3)
+#define TILEY_LOW_BITS(fy, max) ((tileProcY(fy, max) >> 14) & 0x3)
+#define PREAMBLE_TRANS(state)   SkBitmapProcState::IntTileProc tileProcX = (state).iTileProcX; \
+                                SkBitmapProcState::IntTileProc tileProcY = (state).iTileProcY
+#define TILEX_TRANS(x, max)     tileProcX(x, max)
+#define TILEY_TRANS(y, max)     tileProcY(y, max)
 #include "SkBitmapProcState_matrix.h"
 
-static inline U16CPU fixed_clamp(SkFixed x)
+
+
+static inline SkFixed fixed_clamp(SkFixed x, int max)
 {
 #ifdef SK_CPU_HAS_CONDITIONAL_INSTR
     if (x >> 16)
@@ -66,19 +76,20 @@
             x = 0xFFFF;
     }
 #endif
-    return x;
+    return x * (max + 1);
 }
 
-static inline U16CPU fixed_repeat(SkFixed x)
+static inline SkFixed fixed_repeat(SkFixed x, int max)
 {
-    return x & 0xFFFF;
+    return (x & 0xFFFF) * (max + 1);
 }
 
-static inline U16CPU fixed_mirror(SkFixed x)
+static inline SkFixed fixed_mirror(SkFixed x, int max)
 {
     SkFixed s = x << 15 >> 31;
     // s is FFFFFFFF if we're on an odd interval, or 0 if an even interval
-    return (x ^ s) & 0xFFFF;
+    x = ((x ^ s) & 0xFFFF) * (max + 1);
+    return s ? (x ^ 0xFFFF) : x;
 }
 
 static SkBitmapProcState::FixedTileProc choose_tile_proc(unsigned m)
@@ -91,14 +102,51 @@
     return fixed_mirror;
 }
 
+static inline int int_clamp(int x, int max)
+{
+    SkASSERT(max >= 0);
+
+    return SkClampMax(x, max);
+}
+
+static inline int int_repeat(int x, int max)
+{
+    SkASSERT(max >= 0);
+
+    return x % (max + 1);
+}
+
+static inline int int_mirror(int x, int max)
+{
+    SkASSERT(max >= 0);
+
+    int dx = x % (max + 1);
+    if (dx < 0)
+        dx = -dx - 1;
+
+    return (x / (max + 1) % 2) ? max - dx : dx;
+}
+
+static SkBitmapProcState::IntTileProc choose_int_tile_proc(unsigned m)
+{
+    if (SkShader::kClamp_TileMode == m)
+        return int_clamp;
+    if (SkShader::kRepeat_TileMode == m)
+        return int_repeat;
+    SkASSERT(SkShader::kMirror_TileMode == m);
+    return int_mirror;
+}
+
 SkBitmapProcState::MatrixProc SkBitmapProcState::chooseMatrixProc()
 {
     int index = 0;
     if (fDoFilter)
         index = 1;
     if (fInvType & SkMatrix::kPerspective_Mask)
+        index |= 6;
+    else if (fInvType & SkMatrix::kAffine_Mask)
         index |= 4;
-    else if (fInvType & SkMatrix::kAffine_Mask)
+    else if (fInvType & SkMatrix::kScale_Mask)
         index |= 2;
 
     if (SkShader::kClamp_TileMode == fTileModeX &&
@@ -123,6 +171,8 @@
     // only general needs these procs
     fTileProcX = choose_tile_proc(fTileModeX);
     fTileProcY = choose_tile_proc(fTileModeY);
+    iTileProcX = choose_int_tile_proc(fTileModeX);
+    iTileProcY = choose_int_tile_proc(fTileModeY);
     return GeneralXY_Procs[index];
 }