1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
|
/*
* Copyright 2011 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
// This test only works with the GPU backend.
#include "gm.h"
#if SK_SUPPORT_GPU
#include "GrContext.h"
#include "SkColorPriv.h"
#include "effects/GrPorterDuffXferProcessor.h"
#include "effects/GrSimpleTextureEffect.h"
namespace skiagm {
static const int S = 200;
class TexDataGM : public GM {
public:
TexDataGM() {
this->setBGColor(0xff000000);
}
protected:
SkString onShortName() SK_OVERRIDE {
return SkString("texdata");
}
SkISize onISize() SK_OVERRIDE {
return SkISize::Make(2*S, 2*S);
}
void onDraw(SkCanvas* canvas) SK_OVERRIDE {
GrRenderTarget* target = canvas->internal_private_accessTopLayerRenderTarget();
GrContext* ctx = canvas->getGrContext();
if (ctx && target) {
SkAutoTArray<SkPMColor> gTextureData((2 * S) * (2 * S));
static const int stride = 2 * S;
static const SkPMColor gray = SkPackARGB32(0x40, 0x40, 0x40, 0x40);
static const SkPMColor white = SkPackARGB32(0xff, 0xff, 0xff, 0xff);
static const SkPMColor red = SkPackARGB32(0x80, 0x80, 0x00, 0x00);
static const SkPMColor blue = SkPackARGB32(0x80, 0x00, 0x00, 0x80);
static const SkPMColor green = SkPackARGB32(0x80, 0x00, 0x80, 0x00);
static const SkPMColor black = SkPackARGB32(0x00, 0x00, 0x00, 0x00);
for (int i = 0; i < 2; ++i) {
int offset = 0;
// fill upper-left
for (int y = 0; y < S; ++y) {
for (int x = 0; x < S; ++x) {
gTextureData[offset + y * stride + x] = gray;
}
}
// fill upper-right
offset = S;
for (int y = 0; y < S; ++y) {
for (int x = 0; x < S; ++x) {
gTextureData[offset + y * stride + x] = white;
}
}
// fill lower left
offset = S * stride;
for (int y = 0; y < S; ++y) {
for (int x = 0; x < S; ++x) {
gTextureData[offset + y * stride + x] = black;
}
}
// fill lower right
offset = S * stride + S;
for (int y = 0; y < S; ++y) {
for (int x = 0; x < S; ++x) {
gTextureData[offset + y * stride + x] = gray;
}
}
GrSurfaceDesc desc;
// use RT flag bit because in GL it makes the texture be bottom-up
desc.fFlags = i ? kRenderTarget_GrSurfaceFlag :
kNone_GrSurfaceFlags;
desc.fConfig = kSkia8888_GrPixelConfig;
desc.fWidth = 2 * S;
desc.fHeight = 2 * S;
GrTexture* texture =
ctx->createUncachedTexture(desc, gTextureData.get(), 0);
if (!texture) {
return;
}
SkAutoTUnref<GrTexture> au(texture);
GrContext::AutoClip acs(ctx, SkRect::MakeWH(2*S, 2*S));
ctx->setRenderTarget(target);
GrPaint paint;
paint.setPorterDuffXPFactory(SkXfermode::kSrcOver_Mode);
SkMatrix vm;
if (i) {
vm.setRotate(90 * SK_Scalar1,
S * SK_Scalar1,
S * SK_Scalar1);
} else {
vm.reset();
}
SkMatrix tm;
tm = vm;
tm.postIDiv(2*S, 2*S);
paint.addColorTextureProcessor(texture, tm);
ctx->drawRect(paint, vm, SkRect::MakeWH(2*S, 2*S));
// now update the lower right of the texture in first pass
// or upper right in second pass
offset = 0;
for (int y = 0; y < S; ++y) {
for (int x = 0; x < S; ++x) {
gTextureData[offset + y * stride + x] =
((x + y) % 2) ? (i ? green : red) : blue;
}
}
texture->writePixels(S, (i ? 0 : S), S, S,
texture->config(), gTextureData.get(),
4 * stride);
ctx->drawRect(paint, vm, SkRect::MakeWH(2*S, 2*S));
}
} else {
this->drawGpuOnlyMessage(canvas);
}
}
private:
typedef GM INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
static GM* MyFactory(void*) { return new TexDataGM; }
static GMRegistry reg(MyFactory);
}
#endif
|