Sk4x4f

   An API for loading and storing 4 Sk4f with transpose.
   This has SSSE3+ and portable versions.
   SSE2 and NEON versions to follow.

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1825663002

Review URL: https://codereview.chromium.org/1825663002

1 files changed, 54 insertions, 0 deletions

diff --git a/tests/Sk4x4fTest.cpp b/tests/Sk4x4fTest.cpp
new file mode 100644
index 0000000000..100e13973f
--- /dev/null
+++ b/tests/Sk4x4fTest.cpp
@@ -0,0 +1,54 @@
+/*
+ * Copyright 2016 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "Sk4x4f.h"
+#include "Test.h"
+
+DEF_TEST(Sk4x4f, r) {
+    Sk4x4f f;
+
+    Sk4f x{ 0, 1, 2, 3},
+         y{ 4, 5, 6, 7},
+         z{ 8, 9,10,11},
+         w{12,13,14,15};
+    f = Sk4x4f::Transpose(x,y,z,w);
+    REPORTER_ASSERT(r, f.r[0] == 0 && f.r[1] == 4 && f.r[2] ==  8 && f.r[3] == 12);
+    REPORTER_ASSERT(r, f.g[0] == 1 && f.g[1] == 5 && f.g[2] ==  9 && f.g[3] == 13);
+    REPORTER_ASSERT(r, f.b[0] == 2 && f.b[1] == 6 && f.b[2] == 10 && f.b[3] == 14);
+    REPORTER_ASSERT(r, f.a[0] == 3 && f.a[1] == 7 && f.a[2] == 11 && f.a[3] == 15);
+
+    Sk4f s,t,u,v;
+    f.transpose(&s,&t,&u,&v);
+    REPORTER_ASSERT(r, (x == s).allTrue()
+                    && (y == t).allTrue()
+                    && (z == u).allTrue()
+                    && (w == v).allTrue());
+
+
+    float fs[16] = {0,1,2,3, 4,5,6,7, 8,9,10,11, 12,13,14,15};
+    f = Sk4x4f::Transpose(fs);
+    REPORTER_ASSERT(r, f.r[0] == 0 && f.r[1] == 4 && f.r[2] ==  8 && f.r[3] == 12);
+    REPORTER_ASSERT(r, f.g[0] == 1 && f.g[1] == 5 && f.g[2] ==  9 && f.g[3] == 13);
+    REPORTER_ASSERT(r, f.b[0] == 2 && f.b[1] == 6 && f.b[2] == 10 && f.b[3] == 14);
+    REPORTER_ASSERT(r, f.a[0] == 3 && f.a[1] == 7 && f.a[2] == 11 && f.a[3] == 15);
+
+    float fs_back[16];
+    f.transpose(fs_back);
+    REPORTER_ASSERT(r, 0 == memcmp(fs, fs_back, sizeof(fs)));
+
+
+    uint8_t bs[16] = {0,1,2,3, 4,5,6,7, 8,9,10,11, 12,13,14,15};
+    f = Sk4x4f::Transpose(bs);
+    REPORTER_ASSERT(r, f.r[0] == 0 && f.r[1] == 4 && f.r[2] ==  8 && f.r[3] == 12);
+    REPORTER_ASSERT(r, f.g[0] == 1 && f.g[1] == 5 && f.g[2] ==  9 && f.g[3] == 13);
+    REPORTER_ASSERT(r, f.b[0] == 2 && f.b[1] == 6 && f.b[2] == 10 && f.b[3] == 14);
+    REPORTER_ASSERT(r, f.a[0] == 3 && f.a[1] == 7 && f.a[2] == 11 && f.a[3] == 15);
+
+    uint8_t bs_back[16];
+    f.transpose(bs_back);
+    REPORTER_ASSERT(r, 0 == memcmp(bs, bs_back, sizeof(bs)));
+}