1 /*
2 * Copyright (C) 2014 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 #include "RenderState.h"
17
18 #include "renderthread/CanvasContext.h"
19 #include "renderthread/EglManager.h"
20
21 namespace android {
22 namespace uirenderer {
23
RenderState(renderthread::RenderThread & thread)24 RenderState::RenderState(renderthread::RenderThread& thread)
25 : mRenderThread(thread)
26 , mCaches(NULL)
27 , mViewportWidth(0)
28 , mViewportHeight(0)
29 , mFramebuffer(0) {
30 mThreadId = pthread_self();
31 }
32
~RenderState()33 RenderState::~RenderState() {
34 }
35
onGLContextCreated()36 void RenderState::onGLContextCreated() {
37 // This is delayed because the first access of Caches makes GL calls
38 mCaches = &Caches::getInstance();
39 mCaches->init();
40 mCaches->setRenderState(this);
41 mCaches->textureCache.setAssetAtlas(&mAssetAtlas);
42 }
43
layerLostGlContext(Layer * layer)44 static void layerLostGlContext(Layer* layer) {
45 layer->onGlContextLost();
46 }
47
onGLContextDestroyed()48 void RenderState::onGLContextDestroyed() {
49 /*
50 size_t size = mActiveLayers.size();
51 if (CC_UNLIKELY(size != 0)) {
52 ALOGE("Crashing, have %d contexts and %d layers at context destruction. isempty %d",
53 mRegisteredContexts.size(), size, mActiveLayers.empty());
54 mCaches->dumpMemoryUsage();
55 for (std::set<renderthread::CanvasContext*>::iterator cit = mRegisteredContexts.begin();
56 cit != mRegisteredContexts.end(); cit++) {
57 renderthread::CanvasContext* context = *cit;
58 ALOGE("Context: %p (root = %p)", context, context->mRootRenderNode.get());
59 ALOGE(" Prefeteched layers: %zu", context->mPrefetechedLayers.size());
60 for (std::set<RenderNode*>::iterator pit = context->mPrefetechedLayers.begin();
61 pit != context->mPrefetechedLayers.end(); pit++) {
62 (*pit)->debugDumpLayers(" ");
63 }
64 context->mRootRenderNode->debugDumpLayers(" ");
65 }
66
67
68 if (mActiveLayers.begin() == mActiveLayers.end()) {
69 ALOGE("set has become empty. wat.");
70 }
71 for (std::set<const Layer*>::iterator lit = mActiveLayers.begin();
72 lit != mActiveLayers.end(); lit++) {
73 const Layer* layer = *(lit);
74 ALOGE("Layer %p, state %d, texlayer %d, fbo %d, buildlayered %d",
75 layer, layer->state, layer->isTextureLayer(), layer->getFbo(), layer->wasBuildLayered);
76 }
77 LOG_ALWAYS_FATAL("%d layers have survived gl context destruction", size);
78 }
79 */
80 std::for_each(mActiveLayers.begin(), mActiveLayers.end(), layerLostGlContext);
81 mAssetAtlas.terminate();
82 }
83
setViewport(GLsizei width,GLsizei height)84 void RenderState::setViewport(GLsizei width, GLsizei height) {
85 mViewportWidth = width;
86 mViewportHeight = height;
87 glViewport(0, 0, mViewportWidth, mViewportHeight);
88 }
89
90
getViewport(GLsizei * outWidth,GLsizei * outHeight)91 void RenderState::getViewport(GLsizei* outWidth, GLsizei* outHeight) {
92 *outWidth = mViewportWidth;
93 *outHeight = mViewportHeight;
94 }
95
bindFramebuffer(GLuint fbo)96 void RenderState::bindFramebuffer(GLuint fbo) {
97 if (mFramebuffer != fbo) {
98 mFramebuffer = fbo;
99 glBindFramebuffer(GL_FRAMEBUFFER, mFramebuffer);
100 }
101 }
102
invokeFunctor(Functor * functor,DrawGlInfo::Mode mode,DrawGlInfo * info)103 void RenderState::invokeFunctor(Functor* functor, DrawGlInfo::Mode mode, DrawGlInfo* info) {
104 interruptForFunctorInvoke();
105 (*functor)(mode, info);
106 resumeFromFunctorInvoke();
107 }
108
interruptForFunctorInvoke()109 void RenderState::interruptForFunctorInvoke() {
110 if (mCaches->currentProgram) {
111 if (mCaches->currentProgram->isInUse()) {
112 mCaches->currentProgram->remove();
113 mCaches->currentProgram = NULL;
114 }
115 }
116 mCaches->resetActiveTexture();
117 mCaches->unbindMeshBuffer();
118 mCaches->unbindIndicesBuffer();
119 mCaches->resetVertexPointers();
120 mCaches->disableTexCoordsVertexArray();
121 debugOverdraw(false, false);
122 }
123
resumeFromFunctorInvoke()124 void RenderState::resumeFromFunctorInvoke() {
125 glViewport(0, 0, mViewportWidth, mViewportHeight);
126 glBindFramebuffer(GL_FRAMEBUFFER, mFramebuffer);
127 debugOverdraw(false, false);
128
129 glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
130
131 mCaches->scissorEnabled = glIsEnabled(GL_SCISSOR_TEST);
132 mCaches->enableScissor();
133 mCaches->resetScissor();
134
135 mCaches->activeTexture(0);
136 mCaches->resetBoundTextures();
137
138 mCaches->blend = true;
139 glEnable(GL_BLEND);
140 glBlendFunc(mCaches->lastSrcMode, mCaches->lastDstMode);
141 glBlendEquation(GL_FUNC_ADD);
142 }
143
debugOverdraw(bool enable,bool clear)144 void RenderState::debugOverdraw(bool enable, bool clear) {
145 if (mCaches->debugOverdraw && mFramebuffer == 0) {
146 if (clear) {
147 mCaches->disableScissor();
148 mCaches->stencil.clear();
149 }
150 if (enable) {
151 mCaches->stencil.enableDebugWrite();
152 } else {
153 mCaches->stencil.disable();
154 }
155 }
156 }
157
requireGLContext()158 void RenderState::requireGLContext() {
159 assertOnGLThread();
160 mRenderThread.eglManager().requireGlContext();
161 }
162
assertOnGLThread()163 void RenderState::assertOnGLThread() {
164 pthread_t curr = pthread_self();
165 LOG_ALWAYS_FATAL_IF(!pthread_equal(mThreadId, curr), "Wrong thread!");
166 }
167
168
169 class DecStrongTask : public renderthread::RenderTask {
170 public:
DecStrongTask(VirtualLightRefBase * object)171 DecStrongTask(VirtualLightRefBase* object) : mObject(object) {}
172
run()173 virtual void run() {
174 mObject->decStrong(0);
175 mObject = 0;
176 delete this;
177 }
178
179 private:
180 VirtualLightRefBase* mObject;
181 };
182
postDecStrong(VirtualLightRefBase * object)183 void RenderState::postDecStrong(VirtualLightRefBase* object) {
184 mRenderThread.queue(new DecStrongTask(object));
185 }
186
187 } /* namespace uirenderer */
188 } /* namespace android */
189