Layer.cpp revision 8ce00301a023eecaeb8891ce906f67b513ebb42a 
1/*
2 * Copyright (C) 2012 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#define LOG_TAG "OpenGLRenderer"
18
19#include <utils/Log.h>
20
21#include "Layer.h"
22#include "LayerRenderer.h"
23#include "OpenGLRenderer.h"
24#include "Caches.h"
25
26namespace android {
27namespace uirenderer {
28
29Layer::Layer(const uint32_t layerWidth, const uint32_t layerHeight) {
30    mesh = NULL;
31    meshIndices = NULL;
32    meshElementCount = 0;
33    cacheable = true;
34    dirty = false;
35    textureLayer = false;
36    renderTarget = GL_TEXTURE_2D;
37    texture.width = layerWidth;
38    texture.height = layerHeight;
39    colorFilter = NULL;
40    deferredUpdateScheduled = false;
41    renderer = NULL;
42    displayList = NULL;
43    fbo = 0;
44    stencil = 0;
45    debugDrawUpdate = false;
46    Caches::getInstance().resourceCache.incrementRefcount(this);
47}
48
49Layer::~Layer() {
50    if (mesh) delete mesh;
51    if (meshIndices) delete meshIndices;
52    if (colorFilter) Caches::getInstance().resourceCache.decrementRefcount(colorFilter);
53    removeFbo();
54    deleteTexture();
55}
56
57void Layer::removeFbo(bool flush) {
58    if (stencil) {
59        // TODO: recycle & cache instead of simply deleting
60        GLuint previousFbo;
61        glGetIntegerv(GL_FRAMEBUFFER_BINDING, (GLint*) &previousFbo);
62        if (fbo != previousFbo) glBindFramebuffer(GL_FRAMEBUFFER, fbo);
63        glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, 0);
64        if (fbo != previousFbo) glBindFramebuffer(GL_FRAMEBUFFER, previousFbo);
65
66        glDeleteRenderbuffers(1, &stencil);
67        stencil = 0;
68    }
69
70    if (fbo) {
71        if (flush) LayerRenderer::flushLayer(this);
72        // If put fails the cache will delete the FBO
73        Caches::getInstance().fboCache.put(fbo);
74        fbo = 0;
75    }
76}
77
78void Layer::setPaint(SkPaint* paint) {
79    OpenGLRenderer::getAlphaAndModeDirect(paint, &alpha, &mode);
80}
81
82void Layer::setColorFilter(SkiaColorFilter* filter) {
83    if (colorFilter) {
84        Caches::getInstance().resourceCache.decrementRefcount(colorFilter);
85    }
86    colorFilter = filter;
87    if (colorFilter) {
88        Caches::getInstance().resourceCache.incrementRefcount(colorFilter);
89    }
90}
91
92}; // namespace uirenderer
93}; // namespace android
94