Change random number generator for 'tests' to SkMWCRandom. Also removes some
unused headers and fixes a couple of bugs exposed by changing the random
number generator:
First, the function SkMatrix::getMaxStretch() had an error where it was testing
the square of a number against near-zero. This led to it occasionally taking a
cheaper but imprecise path for computing the eigenvalues of the matrix. It's
been replaced with a check against the square of SK_ScalarNearlyZero.
The second case was a failure in ClipStackTest, where it hit the rare case of
a practically empty clip stack (it has a single Union) and we set a tight
bounds. The bounds rect doesn't get set by GrReducedClip::ReduceClipStack() in
this case, so when it clips the reduced stack it's clipping against garbage,
and the resulting regions don't match. The solution is to initialize the
tightBounds rect.
git-svn-id: http://skia.googlecode.com/svn/trunk@7952 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/tests/StreamTest.cpp b/tests/StreamTest.cpp
index 3174511..2b86e7b 100644
--- a/tests/StreamTest.cpp
+++ b/tests/StreamTest.cpp
@@ -17,7 +17,7 @@
#define MAX_SIZE (256 * 1024)
-static void random_fill(SkRandom& rand, void* buffer, size_t size) {
+static void random_fill(SkMWCRandom& rand, void* buffer, size_t size) {
char* p = (char*)buffer;
char* stop = p + size;
while (p < stop) {
@@ -26,7 +26,7 @@
}
static void test_buffer(skiatest::Reporter* reporter) {
- SkRandom rand;
+ SkMWCRandom rand;
SkAutoMalloc am(MAX_SIZE * 2);
char* storage = (char*)am.get();
char* storage2 = storage + MAX_SIZE;
@@ -62,7 +62,7 @@
static const char s[] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
char copy[sizeof(s)];
- SkRandom rand;
+ SkMWCRandom rand;
for (int i = 0; i < 65; i++) {
char* copyPtr = copy;