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
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
|
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/layers/Compositor.h"
#include "mozilla/layers/CompositionRecorder.h"
#include "base/message_loop.h" // for MessageLoop
#include "mozilla/gfx/Types.h"
#include "mozilla/layers/CompositorBridgeParent.h" // for CompositorBridgeParent
#include "mozilla/layers/Diagnostics.h"
#include "mozilla/layers/Effects.h" // for Effect, EffectChain, etc
#include "mozilla/layers/TextureClient.h"
#include "mozilla/layers/TextureHost.h"
#include "mozilla/layers/CompositorThread.h"
#include "mozilla/mozalloc.h" // for operator delete, etc
#include "GeckoProfiler.h"
#include "gfx2DGlue.h"
#include "gfxUtils.h"
#include "nsAppRunner.h"
namespace mozilla::layers {
class CompositorRecordedFrame final : public RecordedFrame {
public:
CompositorRecordedFrame(const TimeStamp& aTimeStamp,
RefPtr<AsyncReadbackBuffer>&& aBuffer)
: RecordedFrame(aTimeStamp), mBuffer(aBuffer) {}
virtual already_AddRefed<gfx::DataSourceSurface> GetSourceSurface() override {
if (mSurface) {
return do_AddRef(mSurface);
}
gfx::IntSize size = mBuffer->GetSize();
mSurface = gfx::Factory::CreateDataSourceSurface(
size, gfx::SurfaceFormat::B8G8R8A8,
/* aZero = */ false);
if (!mBuffer->MapAndCopyInto(mSurface, size)) {
mSurface = nullptr;
return nullptr;
}
return do_AddRef(mSurface);
}
private:
RefPtr<AsyncReadbackBuffer> mBuffer;
RefPtr<gfx::DataSourceSurface> mSurface;
};
Compositor::Compositor(widget::CompositorWidget* aWidget)
: mWidget(aWidget),
mIsDestroyed(false),
#if defined(MOZ_WIDGET_ANDROID)
// If the default color isn't white for Fennec, there is a black
// flash before the first page of a tab is loaded.
mClearColor(gfx::ToDeviceColor(gfx::sRGBColor::OpaqueWhite()))
#else
mClearColor(gfx::DeviceColor())
#endif
{
}
Compositor::~Compositor() {}
void Compositor::Destroy() {
mWidget = nullptr;
TextureSourceProvider::Destroy();
mIsDestroyed = true;
}
void Compositor::EndFrame() { mLastCompositionEndTime = TimeStamp::Now(); }
nsTArray<TexturedVertex> TexturedTrianglesToVertexArray(
const nsTArray<gfx::TexturedTriangle>& aTriangles) {
const auto VertexFromPoints = [](const gfx::Point& p, const gfx::Point& t) {
return TexturedVertex{{p.x, p.y}, {t.x, t.y}};
};
nsTArray<TexturedVertex> vertices;
for (const gfx::TexturedTriangle& t : aTriangles) {
vertices.AppendElement(VertexFromPoints(t.p1, t.textureCoords.p1));
vertices.AppendElement(VertexFromPoints(t.p2, t.textureCoords.p2));
vertices.AppendElement(VertexFromPoints(t.p3, t.textureCoords.p3));
}
return vertices;
}
static float WrapTexCoord(float v) {
// This should return values in range [0, 1.0)
return v - floorf(v);
}
static void SetRects(size_t n, decomposedRectArrayT* aLayerRects,
decomposedRectArrayT* aTextureRects, float x0, float y0,
float x1, float y1, float tx0, float ty0, float tx1,
float ty1, bool flip_y) {
if (flip_y) {
std::swap(ty0, ty1);
}
(*aLayerRects)[n] = gfx::Rect(x0, y0, x1 - x0, y1 - y0);
(*aTextureRects)[n] = gfx::Rect(tx0, ty0, tx1 - tx0, ty1 - ty0);
}
#ifdef DEBUG
static inline bool FuzzyEqual(float a, float b) {
return fabs(a - b) < 0.0001f;
}
static inline bool FuzzyLTE(float a, float b) { return a <= b + 0.0001f; }
#endif
size_t DecomposeIntoNoRepeatRects(const gfx::Rect& aRect,
const gfx::Rect& aTexCoordRect,
decomposedRectArrayT* aLayerRects,
decomposedRectArrayT* aTextureRects) {
gfx::Rect texCoordRect = aTexCoordRect;
// If the texture should be flipped, it will have negative height. Detect that
// here and compensate for it. We will flip each rect as we emit it.
bool flipped = false;
if (texCoordRect.Height() < 0) {
flipped = true;
texCoordRect.MoveByY(texCoordRect.Height());
texCoordRect.SetHeight(-texCoordRect.Height());
}
// Wrap the texture coordinates so they are within [0,1] and cap width/height
// at 1. We rely on this below.
texCoordRect = gfx::Rect(gfx::Point(WrapTexCoord(texCoordRect.X()),
WrapTexCoord(texCoordRect.Y())),
gfx::Size(std::min(texCoordRect.Width(), 1.0f),
std::min(texCoordRect.Height(), 1.0f)));
NS_ASSERTION(
texCoordRect.X() >= 0.0f && texCoordRect.X() <= 1.0f &&
texCoordRect.Y() >= 0.0f && texCoordRect.Y() <= 1.0f &&
texCoordRect.Width() >= 0.0f && texCoordRect.Width() <= 1.0f &&
texCoordRect.Height() >= 0.0f && texCoordRect.Height() <= 1.0f &&
texCoordRect.XMost() >= 0.0f && texCoordRect.XMost() <= 2.0f &&
texCoordRect.YMost() >= 0.0f && texCoordRect.YMost() <= 2.0f,
"We just wrapped the texture coordinates, didn't we?");
// Get the top left and bottom right points of the rectangle. Note that
// tl.x/tl.y are within [0,1] but br.x/br.y are within [0,2].
gfx::Point tl = texCoordRect.TopLeft();
gfx::Point br = texCoordRect.BottomRight();
NS_ASSERTION(tl.x >= 0.0f && tl.x <= 1.0f && tl.y >= 0.0f && tl.y <= 1.0f &&
br.x >= tl.x && br.x <= 2.0f && br.y >= tl.y &&
br.y <= 2.0f && FuzzyLTE(br.x - tl.x, 1.0f) &&
FuzzyLTE(br.y - tl.y, 1.0f),
"Somehow generated invalid texture coordinates");
// Then check if we wrap in either the x or y axis.
bool xwrap = br.x > 1.0f;
bool ywrap = br.y > 1.0f;
// If xwrap is false, the texture will be sampled from tl.x .. br.x.
// If xwrap is true, then it will be split into tl.x .. 1.0, and
// 0.0 .. WrapTexCoord(br.x). Same for the Y axis. The destination
// rectangle is also split appropriately, according to the calculated
// xmid/ymid values.
if (!xwrap && !ywrap) {
SetRects(0, aLayerRects, aTextureRects, aRect.X(), aRect.Y(), aRect.XMost(),
aRect.YMost(), tl.x, tl.y, br.x, br.y, flipped);
return 1;
}
// If we are dealing with wrapping br.x and br.y are greater than 1.0 so
// wrap them here as well.
br = gfx::Point(xwrap ? WrapTexCoord(br.x.value) : br.x.value,
ywrap ? WrapTexCoord(br.y.value) : br.y.value);
// If we wrap around along the x axis, we will draw first from
// tl.x .. 1.0 and then from 0.0 .. br.x (which we just wrapped above).
// The same applies for the Y axis. The midpoints we calculate here are
// only valid if we actually wrap around.
GLfloat xmid =
aRect.X() + (1.0f - tl.x) / texCoordRect.Width() * aRect.Width();
GLfloat ymid =
aRect.Y() + (1.0f - tl.y) / texCoordRect.Height() * aRect.Height();
// Due to floating-point inaccuracy, we have to use XMost()-x and YMost()-y
// to calculate width and height, respectively, to ensure that size will
// remain consistent going from absolute to relative and back again.
NS_ASSERTION(
!xwrap || (xmid >= aRect.X() && xmid <= aRect.XMost() &&
FuzzyEqual((xmid - aRect.X()) + (aRect.XMost() - xmid),
aRect.XMost() - aRect.X())),
"xmid should be within [x,XMost()] and the wrapped rect should have the "
"same width");
NS_ASSERTION(
!ywrap || (ymid >= aRect.Y() && ymid <= aRect.YMost() &&
FuzzyEqual((ymid - aRect.Y()) + (aRect.YMost() - ymid),
aRect.YMost() - aRect.Y())),
"ymid should be within [y,YMost()] and the wrapped rect should have the "
"same height");
if (!xwrap && ywrap) {
SetRects(0, aLayerRects, aTextureRects, aRect.X(), aRect.Y(), aRect.XMost(),
ymid, tl.x, tl.y, br.x, 1.0f, flipped);
SetRects(1, aLayerRects, aTextureRects, aRect.X(), ymid, aRect.XMost(),
aRect.YMost(), tl.x, 0.0f, br.x, br.y, flipped);
return 2;
}
if (xwrap && !ywrap) {
SetRects(0, aLayerRects, aTextureRects, aRect.X(), aRect.Y(), xmid,
aRect.YMost(), tl.x, tl.y, 1.0f, br.y, flipped);
SetRects(1, aLayerRects, aTextureRects, xmid, aRect.Y(), aRect.XMost(),
aRect.YMost(), 0.0f, tl.y, br.x, br.y, flipped);
return 2;
}
SetRects(0, aLayerRects, aTextureRects, aRect.X(), aRect.Y(), xmid, ymid,
tl.x, tl.y, 1.0f, 1.0f, flipped);
SetRects(1, aLayerRects, aTextureRects, xmid, aRect.Y(), aRect.XMost(), ymid,
0.0f, tl.y, br.x, 1.0f, flipped);
SetRects(2, aLayerRects, aTextureRects, aRect.X(), ymid, xmid, aRect.YMost(),
tl.x, 0.0f, 1.0f, br.y, flipped);
SetRects(3, aLayerRects, aTextureRects, xmid, ymid, aRect.XMost(),
aRect.YMost(), 0.0f, 0.0f, br.x, br.y, flipped);
return 4;
}
bool Compositor::ShouldRecordFrames() const {
return profiler_feature_active(ProfilerFeature::Screenshots) || mRecordFrames;
}
} // namespace mozilla::layers
|
