13659f1f8d
note: gradient caller doesn't so we can still draw wrong when the caller converts its initial fx from float->fixed. Perhaps SkClampRange should offer a float interface as well. git-svn-id: http://skia.googlecode.com/svn/trunk@1149 2bbb7eff-a529-9590-31e7-b0007b416f81
129 lines
3.1 KiB
C++
129 lines
3.1 KiB
C++
#include "Test.h"
|
|
#include "SkClampRange.h"
|
|
#include "SkRandom.h"
|
|
|
|
static skiatest::Reporter* gReporter;
|
|
|
|
static void debug_me() {
|
|
if (NULL == gReporter) {
|
|
SkDebugf("dsfdssd\n");
|
|
}
|
|
}
|
|
|
|
#ifdef USE_REPORTER
|
|
|
|
#define R_ASSERT(cond) \
|
|
do { if (!(cond)) { \
|
|
debug_me(); \
|
|
REPORTER_ASSERT(gReporter, cond); \
|
|
}} while (0)
|
|
|
|
#else
|
|
#define R_ASSERT(cond) \
|
|
do { if (!(cond)) { \
|
|
debug_me(); \
|
|
}} while (0)
|
|
#endif
|
|
|
|
static int classify_value(SkFixed fx, int v0, int v1) {
|
|
if (fx <= 0) {
|
|
return v0;
|
|
}
|
|
if (fx >= 0xFFFF) {
|
|
return v1;
|
|
}
|
|
R_ASSERT(false);
|
|
return 0;
|
|
}
|
|
|
|
#define V0 -42
|
|
#define V1 1024
|
|
|
|
static void slow_check(const SkClampRange& range,
|
|
SkFixed fx, SkFixed dx, int count) {
|
|
SkASSERT(range.fCount0 + range.fCount1 + range.fCount2 == count);
|
|
|
|
int i;
|
|
if (range.fOverflowed) {
|
|
fx = range.fFx1;
|
|
for (i = 0; i < range.fCount1; i++) {
|
|
R_ASSERT(fx >= 0 && fx <= 0xFFFF);
|
|
fx += dx;
|
|
}
|
|
} else {
|
|
for (i = 0; i < range.fCount0; i++) {
|
|
int v = classify_value(fx, V0, V1);
|
|
R_ASSERT(v == range.fV0);
|
|
fx += dx;
|
|
}
|
|
if (range.fCount1 > 0 && fx != range.fFx1) {
|
|
SkDebugf("%x %x\n", fx, range.fFx1);
|
|
R_ASSERT(!"bad fFx1");
|
|
return;
|
|
}
|
|
for (i = 0; i < range.fCount1; i++) {
|
|
R_ASSERT(fx >= 0 && fx <= 0xFFFF);
|
|
fx += dx;
|
|
}
|
|
for (i = 0; i < range.fCount2; i++) {
|
|
int v = classify_value(fx, V0, V1);
|
|
R_ASSERT(v == range.fV1);
|
|
fx += dx;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void test_range(SkFixed fx, SkFixed dx, int count) {
|
|
SkClampRange range;
|
|
range.init(fx, dx, count, V0, V1);
|
|
slow_check(range, fx, dx, count);
|
|
}
|
|
|
|
#define ff(x) SkIntToFixed(x)
|
|
|
|
void TestClampRange(skiatest::Reporter* reporter);
|
|
void TestClampRange(skiatest::Reporter* reporter) {
|
|
gReporter = reporter;
|
|
|
|
test_range(0, 0, 20);
|
|
test_range(0xFFFF, 0, 20);
|
|
test_range(-ff(2), 0, 20);
|
|
test_range( ff(2), 0, 20);
|
|
|
|
test_range(-10, 1, 20);
|
|
test_range(10, -1, 20);
|
|
test_range(-10, 3, 20);
|
|
test_range(10, -3, 20);
|
|
|
|
test_range(ff(1), ff(16384), 100);
|
|
test_range(ff(-1), ff(-16384), 100);
|
|
test_range(ff(1)/2, ff(16384), 100);
|
|
test_range(ff(1)/2, ff(-16384), 100);
|
|
|
|
SkRandom rand;
|
|
|
|
// test non-overflow cases
|
|
for (int i = 0; i < 1000000; i++) {
|
|
SkFixed fx = rand.nextS() >> 1;
|
|
SkFixed sx = rand.nextS() >> 1;
|
|
int count = rand.nextU() % 1000 + 1;
|
|
SkFixed dx = (sx - fx) / count;
|
|
test_range(fx, dx, count);
|
|
}
|
|
|
|
// test overflow cases
|
|
for (int i = 0; i < 100000; i++) {
|
|
SkFixed fx = rand.nextS();
|
|
SkFixed dx = rand.nextS();
|
|
int count = rand.nextU() % 1000 + 1;
|
|
test_range(fx, dx, count);
|
|
}
|
|
}
|
|
|
|
#ifdef USE_REPORTER
|
|
|
|
#include "TestClassDef.h"
|
|
DEFINE_TESTCLASS("ClampRange", ClampRangeClass, TestClampRange)
|
|
|
|
#endif
|