skia2/include/gpu/GrTestUtils.h
senorblanco 29e0d3f267 Implement caching of stroked paths in the tessellated path renderer.
This requires adding the stroke info to the cache key, and doing the
stroking and dashing before rendering as triangles.

BUG=skia:3755

Review URL: https://codereview.chromium.org/1275553002
2015-08-05 13:18:03 -07:00

106 lines
2.9 KiB
C++

/*
* Copyright 2015 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef GrTestUtils_DEFINED
#define GrTestUtils_DEFINED
#include "SkTypes.h"
#ifdef GR_TEST_UTILS
#include "GrColor.h"
#include "SkRandom.h"
#include "SkStrokeRec.h"
class GrStrokeInfo;
class SkMatrix;
class SkPath;
class SkRRect;
struct SkRect;
namespace GrTest {
/**
* A helper for use in Test functions.
*/
const SkMatrix& TestMatrix(SkRandom*);
const SkMatrix& TestMatrixPreservesRightAngles(SkRandom*);
const SkMatrix& TestMatrixRectStaysRect(SkRandom*);
const SkMatrix& TestMatrixInvertible(SkRandom*);
const SkRect& TestRect(SkRandom*);
const SkRect& TestSquare(SkRandom*);
const SkRRect& TestRRectSimple(SkRandom*);
const SkPath& TestPath(SkRandom*);
const SkPath& TestPathConvex(SkRandom*);
SkStrokeRec TestStrokeRec(SkRandom*);
GrStrokeInfo TestStrokeInfo(SkRandom*);
}
static inline GrColor GrRandomColor(SkRandom* random) {
// There are only a few cases of random colors which interest us
enum ColorMode {
kAllOnes_ColorMode,
kAllZeros_ColorMode,
kAlphaOne_ColorMode,
kRandom_ColorMode,
kLast_ColorMode = kRandom_ColorMode
};
ColorMode colorMode = ColorMode(random->nextULessThan(kLast_ColorMode + 1));
GrColor color;
switch (colorMode) {
case kAllOnes_ColorMode:
color = GrColorPackRGBA(0xFF, 0xFF, 0xFF, 0xFF);
break;
case kAllZeros_ColorMode:
color = GrColorPackRGBA(0, 0, 0, 0);
break;
case kAlphaOne_ColorMode:
color = GrColorPackRGBA(random->nextULessThan(256),
random->nextULessThan(256),
random->nextULessThan(256),
0xFF);
break;
case kRandom_ColorMode: {
uint8_t alpha = random->nextULessThan(256);
color = GrColorPackRGBA(random->nextRangeU(0, alpha),
random->nextRangeU(0, alpha),
random->nextRangeU(0, alpha),
alpha);
break;
}
}
GrColorIsPMAssert(color);
return color;
}
static inline uint8_t GrRandomCoverage(SkRandom* random) {
enum CoverageMode {
kZero_CoverageMode,
kAllOnes_CoverageMode,
kRandom_CoverageMode,
kLast_CoverageMode = kRandom_CoverageMode
};
CoverageMode colorMode = CoverageMode(random->nextULessThan(kLast_CoverageMode + 1));
uint8_t coverage;
switch (colorMode) {
case kZero_CoverageMode:
coverage = 0;
case kAllOnes_CoverageMode:
coverage = 0xff;
break;
case kRandom_CoverageMode:
coverage = random->nextULessThan(256);
break;
}
return coverage;
}
#endif
#endif