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test drawing large-coord aa rects

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git-svn-id: http://skia.googlecode.com/svn/trunk@10926 2bbb7eff-a529-9590-31e7-b0007b416f81
This commit is contained in:
reed@google.com 2013-08-26 21:27:03 +00:00
parent b9050d73f9
commit f272e3554a
1 changed files with 48 additions and 0 deletions
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48
tests/DrawPathTest.cpp
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@ -9,6 +9,7 @@
#include "SkBitmap.h"
#include "SkCanvas.h"
#include "SkDashPathEffect.h"
#include "SkSurface.h"
static SkCanvas* create(SkBitmap::Config config, int w, int h, int rb,
void* addr = NULL) {
@ -28,6 +29,49 @@ static SkCanvas* new_canvas(int w, int h) {
///////////////////////////////////////////////////////////////////////////////
// test that we can draw an aa-rect at coordinates > 32K (bigger than fixedpoint)
static void test_big_aa_rect(skiatest::Reporter* reporter) {
SkBitmap output;
SkPMColor pixel[1];
output.setConfig(SkBitmap::kARGB_8888_Config, 1, 1, 4);
output.setPixels(pixel);
SkImage::Info info = {
300, 33300, SkImage::kPMColor_ColorType, SkImage::kPremul_AlphaType
};
SkSurface* surf = SkSurface::NewRaster(info);
SkCanvas* canvas = surf->getCanvas();
SkRect r = { 0, 33000, 300, 33300 };
int x = SkScalarRoundToInt(r.left());
int y = SkScalarRoundToInt(r.top());
// check that the pixel in question starts as transparent (by the surface)
if (canvas->readPixels(&output, x, y)) {
REPORTER_ASSERT(reporter, 0 == pixel[0]);
} else {
REPORTER_ASSERT(reporter, !"readPixels failed");
}
SkPaint paint;
paint.setAntiAlias(true);
paint.setColor(SK_ColorWHITE);
canvas->drawRect(r, paint);
// Now check that it is BLACK
if (canvas->readPixels(&output, x, y)) {
// don't know what swizzling PMColor did, but white should always
// appear the same.
REPORTER_ASSERT(reporter, 0xFFFFFFFF == pixel[0]);
} else {
REPORTER_ASSERT(reporter, !"readPixels failed");
}
surf->unref();
}
///////////////////////////////////////////////////////////////////////////////
static void moveToH(SkPath* path, const uint32_t raw[]) {
const float* fptr = (const float*)raw;
path->moveTo(fptr[0], fptr[1]);
@ -276,6 +320,10 @@ static void TestDrawPath(skiatest::Reporter* reporter) {
if (false) test_crbug131181();
test_infinite_dash(reporter);
test_crbug_165432(reporter);
if (false) { // working on a fix
test_big_aa_rect(reporter);
}
}
#include "TestClassDef.h"