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
|
/*
* Copyright (C) 2013 University of Szeged
* Copyright (C) 2013 Tamas Czene <tczene@inf.u-szeged.hu>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY UNIVERSITY OF SZEGED ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL UNIVERSITY OF SZEGED OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#if ENABLE(FILTERS) && ENABLE(OPENCL)
#include "FEMerge.h"
#include "FilterContextOpenCL.h"
namespace WebCore {
static const char* mergeKernelProgram =
PROGRAM(
const sampler_t sampler = CLK_NORMALIZED_COORDS_FALSE | CLK_ADDRESS_CLAMP | CLK_FILTER_NEAREST;
__kernel void copy(__write_only image2d_t destination, __read_only image2d_t source, int x, int y)
{
float4 destinationPixel = read_imagef(source, sampler, (int2) (get_global_id(0) + x, get_global_id(1) + y));
write_imagef(destination, (int2) (get_global_id(0), get_global_id(1)), destinationPixel);
}
__kernel void merge(__write_only image2d_t destination, __read_only image2d_t previousDestination, __read_only image2d_t sourceA, __read_only image2d_t sourceB, int xA, int yA, int xB, int yB)
{
int2 destinationCoord = (int2) (get_global_id(0), get_global_id(1));
int2 sourceCoordA = (int2) (destinationCoord.x + xA, destinationCoord.y + yA);
int2 sourceCoordB = (int2) (destinationCoord.x + xB, destinationCoord.y + yB);
float4 destinationPixel = read_imagef(previousDestination, sampler, destinationCoord);
float4 sourcePixelA = read_imagef(sourceA, sampler, sourceCoordA);
float4 sourcePixelB = read_imagef(sourceB, sampler, sourceCoordB);
destinationPixel = sourcePixelA + destinationPixel * (1 - sourcePixelA.w);
destinationPixel = sourcePixelB + destinationPixel * (1 - sourcePixelB.w);
write_imagef(destination, destinationCoord, destinationPixel);
}
); // End of OpenCL kernels
inline bool FilterContextOpenCL::compileFEMerge()
{
if (m_mergeWasCompiled || inError())
return !inError();
m_mergeWasCompiled = true;
if (isResourceAllocationFailed((m_mergeProgram = compileProgram(mergeKernelProgram))))
return false;
if (isResourceAllocationFailed((m_mergeCopyOperation = kernelByName(m_mergeProgram, "copy"))))
return false;
if (isResourceAllocationFailed((m_mergeOperation = kernelByName(m_mergeProgram, "merge"))))
return false;
return true;
}
inline void FilterContextOpenCL::applyFEMergeCopy(OpenCLHandle destination, IntSize destinationSize, OpenCLHandle source, IntPoint& relativeSourcePoint)
{
RunKernel kernel(this, m_mergeCopyOperation, destinationSize.width(), destinationSize.height());
kernel.addArgument(destination);
kernel.addArgument(source);
kernel.addArgument(relativeSourcePoint.x());
kernel.addArgument(relativeSourcePoint.y());
kernel.run();
}
inline void FilterContextOpenCL::applyFEMerge(OpenCLHandle destination, OpenCLHandle previousDestination, OpenCLHandle sourceA, OpenCLHandle sourceB, IntSize destinationSize, IntPoint& relativeSourcePointA, IntPoint& relativeSourcePointB)
{
RunKernel kernel(this, m_mergeOperation, destinationSize.width(), destinationSize.height());
kernel.addArgument(destination);
kernel.addArgument(previousDestination);
kernel.addArgument(sourceA);
kernel.addArgument(sourceB);
kernel.addArgument(relativeSourcePointA.x());
kernel.addArgument(relativeSourcePointA.y());
kernel.addArgument(relativeSourcePointB.x());
kernel.addArgument(relativeSourcePointB.y());
kernel.run();
}
bool FEMerge::platformApplyOpenCL()
{
FilterContextOpenCL* context = FilterContextOpenCL::context();
if (!context)
return false;
context->compileFEMerge();
unsigned size = numberOfEffectInputs();
ASSERT(size > 0);
OpenCLHandle destination = createOpenCLImageResult();
OpenCLHandle sourceA = 0;
OpenCLHandle sourceB = 0;
FilterEffect* in;
int i = 0;
if (size & 1) {
in = inputEffect(i++);
sourceA = in->openCLImage();
IntPoint relativeSourcePoint(in->absolutePaintRect().location());
relativeSourcePoint.setX(absolutePaintRect().x() - relativeSourcePoint.x());
relativeSourcePoint.setY(absolutePaintRect().y() - relativeSourcePoint.y());
context->applyFEMergeCopy(destination, absolutePaintRect().size(), sourceA, relativeSourcePoint);
if (size == 1)
return true;
} else
context->fill(destination, absolutePaintRect().size(), Color(0.0f, 0.0f, 0.0f, 0.0f));
OpenCLHandle previousDestination = context->createOpenCLImage(absolutePaintRect().size());
while (i < size) {
OpenCLHandle temp = previousDestination;
previousDestination = destination;
destination = temp;
in = inputEffect(i++);
sourceA = in->openCLImage();
IntPoint relativeSourcePointA(in->absolutePaintRect().location());
relativeSourcePointA.setX(absolutePaintRect().x() - relativeSourcePointA.x());
relativeSourcePointA.setY(absolutePaintRect().y() - relativeSourcePointA.y());
in = inputEffect(i++);
sourceB = in->openCLImage();
IntPoint relativeSourcePointB(in->absolutePaintRect().location());
relativeSourcePointB.setX(absolutePaintRect().x() - relativeSourcePointB.x());
relativeSourcePointB.setY(absolutePaintRect().y() - relativeSourcePointB.y());
context->applyFEMerge(destination, previousDestination, sourceA, sourceB, absolutePaintRect().size(), relativeSourcePointA, relativeSourcePointB);
}
setOpenCLImage(destination);
previousDestination.clear();
return true;
}
} // namespace WebCore
#endif // ENABLE(FILTERS) && ENABLE(OPENCL)
|
