1/*
2 * Copyright 2011, The Android Open Source Project
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *  * Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 *  * Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#define LOG_TAG "GaneshRenderer"
27#define LOG_NDEBUG 1
28
29#include "config.h"
30#include "GaneshRenderer.h"
31
32#if USE(ACCELERATED_COMPOSITING)
33
34#include "AndroidLog.h"
35#include "GaneshContext.h"
36#include "SkCanvas.h"
37#include "SkGpuDevice.h"
38#include "TilesManager.h"
39#include "TransferQueue.h"
40
41namespace WebCore {
42
43GaneshRenderer::GaneshRenderer() : BaseRenderer(BaseRenderer::Ganesh)
44{
45#ifdef DEBUG_COUNT
46    ClassTracker::instance()->increment("GaneshRenderer");
47#endif
48}
49
50GaneshRenderer::~GaneshRenderer()
51{
52#ifdef DEBUG_COUNT
53    ClassTracker::instance()->decrement("GaneshRenderer");
54#endif
55}
56
57void GaneshRenderer::setupCanvas(const TileRenderInfo& renderInfo, SkCanvas* canvas)
58{
59    GaneshContext* ganesh = GaneshContext::instance();
60
61    TransferQueue* tileQueue = TilesManager::instance()->transferQueue();
62
63    tileQueue->lockQueue();
64
65    bool ready = tileQueue->readyForUpdate();
66    if (!ready) {
67        ALOGV("!ready");
68        tileQueue->unlockQueue();
69        return;
70    }
71
72    SkDevice* device = NULL;
73    if (renderInfo.tileSize.width() == TilesManager::tileWidth()
74            && renderInfo.tileSize.height() == TilesManager::tileHeight()) {
75        device = ganesh->getDeviceForTile(renderInfo);
76    } else {
77        // TODO support arbitrary sizes for layers
78        ALOGV("ERROR: expected (%d,%d) actual (%d,%d)",
79              TilesManager::tileWidth(), TilesManager::tileHeight(),
80              renderInfo.tileSize.width(), renderInfo.tileSize.height());
81    }
82
83    // set the GPU device to the canvas
84    canvas->setDevice(device);
85}
86
87void GaneshRenderer::renderingComplete(const TileRenderInfo& renderInfo, SkCanvas* canvas)
88{
89    ALOGV("rendered to tile (%d,%d)", renderInfo.x, renderInfo.y);
90
91    GaneshContext::instance()->flush();
92
93    // In SurfaceTextureMode we must call swapBuffers to unlock and post the
94    // tile's ANativeWindow (i.e. SurfaceTexture) buffer
95    TransferQueue* tileQueue = TilesManager::instance()->transferQueue();
96    eglSwapBuffers(eglGetCurrentDisplay(), tileQueue->m_eglSurface);
97    SkBitmap dummyBitmap;
98    tileQueue->addItemInTransferQueue(&renderInfo, GpuUpload, dummyBitmap);
99    tileQueue->unlockQueue();
100}
101
102} // namespace WebCore
103
104#endif // USE(ACCELERATED_COMPOSITING)
105