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1 /*
2  * Copyright 2015 Google Inc.
3  *
4  * Use of this source code is governed by a BSD-style license that can be
5  * found in the LICENSE file.
6  */
7 
8 #include "GrDrawOpTest.h"
9 #include "GrCaps.h"
10 #include "GrContext.h"
11 #include "GrContextPriv.h"
12 #include "GrUserStencilSettings.h"
13 #include "SkRandom.h"
14 #include "SkTypes.h"
15 
16 #if GR_TEST_UTILS
17 
GrGetRandomStencil(SkRandom * random,GrContext * context)18 const GrUserStencilSettings* GrGetRandomStencil(SkRandom* random, GrContext* context) {
19     if (context->contextPriv().caps()->avoidStencilBuffers()) {
20         return &GrUserStencilSettings::kUnused;
21     }
22     static constexpr GrUserStencilSettings kReads(
23         GrUserStencilSettings::StaticInit<
24             0x8080,
25             GrUserStencilTest::kLess,
26             0xffff,
27             GrUserStencilOp::kKeep,
28             GrUserStencilOp::kKeep,
29             0xffff>()
30     );
31     static constexpr GrUserStencilSettings kWrites(
32         GrUserStencilSettings::StaticInit<
33             0xffff,
34             GrUserStencilTest::kAlways,
35             0xffff,
36             GrUserStencilOp::kReplace,
37             GrUserStencilOp::kReplace,
38             0xffff>()
39     );
40     static constexpr GrUserStencilSettings kReadsAndWrites(
41         GrUserStencilSettings::StaticInit<
42             0x8000,
43             GrUserStencilTest::kEqual,
44             0x6000,
45             GrUserStencilOp::kIncWrap,
46             GrUserStencilOp::kInvert,
47             0x77ff>()
48     );
49 
50     static const GrUserStencilSettings* kStencilSettings[] = {
51             &GrUserStencilSettings::kUnused,
52             &kReads,
53             &kWrites,
54             &kReadsAndWrites,
55     };
56     return kStencilSettings[random->nextULessThan(SK_ARRAY_COUNT(kStencilSettings))];
57 }
58 
59 #endif
60