Remove SkLightingShader and associated classes

Change-Id: I8050414c30dfdb5df23ca79955adc5ba3a29d3f5
Reviewed-on: https://skia-review.googlesource.com/31140
Reviewed-by: Mike Reed <reed@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>

2 files changed, 0 insertions, 114 deletions

diff --git a/tools/sk_tool_utils.cpp b/tools/sk_tool_utils.cpp
index d957d53f12..a8d877bf8b 100644
--- a/tools/sk_tool_utils.cpp
+++ b/tools/sk_tool_utils.cpp
@@ -261,114 +261,6 @@ void add_to_text_blob(SkTextBlobBuilder* builder, const char* text, const SkPain
     memcpy(run.glyphs, glyphs.begin(), glyphs.count() * sizeof(uint16_t));
 }
 
-static inline void norm_to_rgb(SkBitmap* bm, int x, int y, const SkVector3& norm) {
-    SkASSERT(SkScalarNearlyEqual(norm.length(), 1.0f));
-    unsigned char r = static_cast<unsigned char>((0.5f * norm.fX + 0.5f) * 255);
-    unsigned char g = static_cast<unsigned char>((-0.5f * norm.fY + 0.5f) * 255);
-    unsigned char b = static_cast<unsigned char>((0.5f * norm.fZ + 0.5f) * 255);
-    *bm->getAddr32(x, y) = SkPackARGB32(0xFF, r, g, b);
-}
-
-void create_hemi_normal_map(SkBitmap* bm, const SkIRect& dst) {
-    const SkPoint center = SkPoint::Make(dst.fLeft + (dst.width() / 2.0f),
-                                         dst.fTop + (dst.height() / 2.0f));
-    const SkPoint halfSize = SkPoint::Make(dst.width() / 2.0f, dst.height() / 2.0f);
-
-    SkVector3 norm;
-
-    for (int y = dst.fTop; y < dst.fBottom; ++y) {
-        for (int x = dst.fLeft; x < dst.fRight; ++x) {
-            norm.fX = (x + 0.5f - center.fX) / halfSize.fX;
-            norm.fY = (y + 0.5f - center.fY) / halfSize.fY;
-
-            SkScalar tmp = norm.fX * norm.fX + norm.fY * norm.fY;
-            if (tmp >= 1.0f) {
-                norm.set(0.0f, 0.0f, 1.0f);
-            } else {
-                norm.fZ = sqrtf(1.0f - tmp);
-            }
-
-            norm_to_rgb(bm, x, y, norm);
-        }
-    }
-}
-
-void create_frustum_normal_map(SkBitmap* bm, const SkIRect& dst) {
-    const SkPoint center = SkPoint::Make(dst.fLeft + (dst.width() / 2.0f),
-                                         dst.fTop + (dst.height() / 2.0f));
-
-    SkIRect inner = dst;
-    inner.inset(dst.width()/4, dst.height()/4);
-
-    SkPoint3 norm;
-    const SkPoint3 left =  SkPoint3::Make(-SK_ScalarRoot2Over2, 0.0f, SK_ScalarRoot2Over2);
-    const SkPoint3 up =    SkPoint3::Make(0.0f, -SK_ScalarRoot2Over2, SK_ScalarRoot2Over2);
-    const SkPoint3 right = SkPoint3::Make(SK_ScalarRoot2Over2,  0.0f, SK_ScalarRoot2Over2);
-    const SkPoint3 down =  SkPoint3::Make(0.0f,  SK_ScalarRoot2Over2, SK_ScalarRoot2Over2);
-
-    for (int y = dst.fTop; y < dst.fBottom; ++y) {
-        for (int x = dst.fLeft; x < dst.fRight; ++x) {
-            if (inner.contains(x, y)) {
-                norm.set(0.0f, 0.0f, 1.0f);
-            } else {
-                SkScalar locX = x + 0.5f - center.fX;
-                SkScalar locY = y + 0.5f - center.fY;
-
-                if (locX >= 0.0f) {
-                    if (locY > 0.0f) {
-                        norm = locX >= locY ? right : down;   // LR corner
-                    } else {
-                        norm = locX > -locY ? right : up;     // UR corner
-                    }
-                } else {
-                    if (locY > 0.0f) {
-                        norm = -locX > locY ? left : down;    // LL corner
-                    } else {
-                        norm = locX > locY ? up : left;       // UL corner
-                    }
-                }
-            }
-
-            norm_to_rgb(bm, x, y, norm);
-        }
-    }
-}
-
-void create_tetra_normal_map(SkBitmap* bm, const SkIRect& dst) {
-    const SkPoint center = SkPoint::Make(dst.fLeft + (dst.width() / 2.0f),
-                                         dst.fTop + (dst.height() / 2.0f));
-
-    static const SkScalar k1OverRoot3 = 0.5773502692f;
-
-    SkPoint3 norm;
-    const SkPoint3 leftUp =  SkPoint3::Make(-k1OverRoot3, -k1OverRoot3, k1OverRoot3);
-    const SkPoint3 rightUp = SkPoint3::Make(k1OverRoot3,  -k1OverRoot3, k1OverRoot3);
-    const SkPoint3 down =  SkPoint3::Make(0.0f,  SK_ScalarRoot2Over2, SK_ScalarRoot2Over2);
-
-    for (int y = dst.fTop; y < dst.fBottom; ++y) {
-        for (int x = dst.fLeft; x < dst.fRight; ++x) {
-            SkScalar locX = x + 0.5f - center.fX;
-            SkScalar locY = y + 0.5f - center.fY;
-
-            if (locX >= 0.0f) {
-                if (locY > 0.0f) {
-                    norm = locX >= locY ? rightUp : down;   // LR corner
-                } else {
-                    norm = rightUp;
-                }
-            } else {
-                if (locY > 0.0f) {
-                    norm = -locX > locY ? leftUp : down;    // LL corner
-                } else {
-                    norm = leftUp;
-                }
-            }
-
-            norm_to_rgb(bm, x, y, norm);
-        }
-    }
-}
-
 #if !defined(__clang__) && defined(_MSC_VER)
     // MSVC takes ~2 minutes to compile this function with optimization.
     // We don't really care to wait that long for this function.
diff --git a/tools/sk_tool_utils.h b/tools/sk_tool_utils.h
index 6283225c7f..ea06c119e7 100644
--- a/tools/sk_tool_utils.h
+++ b/tools/sk_tool_utils.h
@@ -121,12 +121,6 @@ namespace sk_tool_utils {
     void add_to_text_blob(SkTextBlobBuilder* builder, const char* text, const SkPaint& origPaint,
                           SkScalar x, SkScalar y);
 
-    void create_hemi_normal_map(SkBitmap* bm, const SkIRect& dst);
-
-    void create_frustum_normal_map(SkBitmap* bm, const SkIRect& dst);
-
-    void create_tetra_normal_map(SkBitmap* bm, const SkIRect& dst);
-
     void make_big_path(SkPath& path);
 
     // Return a blurred version of 'src'. This doesn't use a separable filter