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 #include "Layer.h"
18
19 #include "Caches.h"
20 #include "DeferredDisplayList.h"
21 #include "LayerRenderer.h"
22 #include "OpenGLRenderer.h"
23 #include "RenderNode.h"
24 #include "renderstate/RenderState.h"
25 #include "utils/TraceUtils.h"
26
27 #include <utils/Log.h>
28
29 #define ATRACE_LAYER_WORK(label) \
30 ATRACE_FORMAT("%s HW Layer DisplayList %s %ux%u", \
31 label, \
32 (renderNode.get() != NULL) ? renderNode->getName() : "", \
33 getWidth(), getHeight())
34
35 namespace android {
36 namespace uirenderer {
37
Layer(Type layerType,RenderState & renderState,uint32_t layerWidth,uint32_t layerHeight)38 Layer::Layer(Type layerType, RenderState& renderState, uint32_t layerWidth, uint32_t layerHeight)
39 : GpuMemoryTracker(GpuObjectType::Layer)
40 , state(State::Uncached)
41 , caches(Caches::getInstance())
42 , renderState(renderState)
43 , texture(caches)
44 , type(layerType) {
45 // TODO: This is a violation of Android's typical ref counting, but it
46 // preserves the old inc/dec ref locations. This should be changed...
47 incStrong(nullptr);
48 renderTarget = GL_TEXTURE_2D;
49 texture.mWidth = layerWidth;
50 texture.mHeight = layerHeight;
51 renderState.registerLayer(this);
52 }
53
~Layer()54 Layer::~Layer() {
55 renderState.unregisterLayer(this);
56 SkSafeUnref(colorFilter);
57
58 if (stencil || fbo || texture.mId) {
59 removeFbo();
60 texture.deleteTexture();
61 }
62
63 delete[] mesh;
64 }
65
onGlContextLost()66 void Layer::onGlContextLost() {
67 removeFbo();
68 texture.deleteTexture();
69 }
70
computeIdealWidth(uint32_t layerWidth)71 uint32_t Layer::computeIdealWidth(uint32_t layerWidth) {
72 return uint32_t(ceilf(layerWidth / float(LAYER_SIZE)) * LAYER_SIZE);
73 }
74
computeIdealHeight(uint32_t layerHeight)75 uint32_t Layer::computeIdealHeight(uint32_t layerHeight) {
76 return uint32_t(ceilf(layerHeight / float(LAYER_SIZE)) * LAYER_SIZE);
77 }
78
requireRenderer()79 void Layer::requireRenderer() {
80 if (!renderer) {
81 renderer.reset(new LayerRenderer(renderState, this));
82 renderer->initProperties();
83 }
84 }
85
updateLightPosFromRenderer(const OpenGLRenderer & rootRenderer)86 void Layer::updateLightPosFromRenderer(const OpenGLRenderer& rootRenderer) {
87 if (renderer && rendererLightPosDirty) {
88 // re-init renderer's light position, based upon last cached location in window
89 Vector3 lightPos = rootRenderer.getLightCenter();
90 cachedInvTransformInWindow.mapPoint3d(lightPos);
91 renderer->initLight(rootRenderer.getLightRadius(),
92 rootRenderer.getAmbientShadowAlpha(),
93 rootRenderer.getSpotShadowAlpha());
94 renderer->setLightCenter(lightPos);
95 rendererLightPosDirty = false;
96 }
97 }
98
resize(const uint32_t width,const uint32_t height)99 bool Layer::resize(const uint32_t width, const uint32_t height) {
100 uint32_t desiredWidth = computeIdealWidth(width);
101 uint32_t desiredHeight = computeIdealWidth(height);
102
103 if (desiredWidth <= getWidth() && desiredHeight <= getHeight()) {
104 return true;
105 }
106
107 ATRACE_NAME("resizeLayer");
108
109 const uint32_t maxTextureSize = caches.maxTextureSize;
110 if (desiredWidth > maxTextureSize || desiredHeight > maxTextureSize) {
111 ALOGW("Layer exceeds max. dimensions supported by the GPU (%dx%d, max=%dx%d)",
112 desiredWidth, desiredHeight, maxTextureSize, maxTextureSize);
113 return false;
114 }
115
116 uint32_t oldWidth = getWidth();
117 uint32_t oldHeight = getHeight();
118
119 setSize(desiredWidth, desiredHeight);
120
121 if (fbo) {
122 caches.textureState().activateTexture(0);
123 bindTexture();
124 allocateTexture();
125
126 if (glGetError() != GL_NO_ERROR) {
127 setSize(oldWidth, oldHeight);
128 return false;
129 }
130 }
131
132 if (stencil) {
133 stencil->bind();
134 stencil->resize(desiredWidth, desiredHeight);
135
136 if (glGetError() != GL_NO_ERROR) {
137 setSize(oldWidth, oldHeight);
138 return false;
139 }
140 }
141
142 return true;
143 }
144
removeFbo(bool flush)145 void Layer::removeFbo(bool flush) {
146 if (stencil) {
147 GLuint previousFbo = renderState.getFramebuffer();
148 renderState.bindFramebuffer(fbo);
149 glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, 0);
150 renderState.bindFramebuffer(previousFbo);
151
152 caches.renderBufferCache.put(stencil);
153 stencil = nullptr;
154 }
155
156 if (fbo) {
157 if (flush) LayerRenderer::flushLayer(renderState, this);
158 renderState.deleteFramebuffer(fbo);
159 fbo = 0;
160 }
161 }
162
updateDeferred(RenderNode * renderNode,int left,int top,int right,int bottom)163 void Layer::updateDeferred(RenderNode* renderNode, int left, int top, int right, int bottom) {
164 requireRenderer();
165 this->renderNode = renderNode;
166 const Rect r(left, top, right, bottom);
167 dirtyRect.unionWith(r);
168 deferredUpdateScheduled = true;
169 }
170
setPaint(const SkPaint * paint)171 void Layer::setPaint(const SkPaint* paint) {
172 alpha = PaintUtils::getAlphaDirect(paint);
173 mode = PaintUtils::getXfermodeDirect(paint);
174 setColorFilter((paint) ? paint->getColorFilter() : nullptr);
175 }
176
setColorFilter(SkColorFilter * filter)177 void Layer::setColorFilter(SkColorFilter* filter) {
178 SkRefCnt_SafeAssign(colorFilter, filter);
179 }
180
bindTexture() const181 void Layer::bindTexture() const {
182 if (texture.mId) {
183 caches.textureState().bindTexture(renderTarget, texture.mId);
184 }
185 }
186
bindStencilRenderBuffer() const187 void Layer::bindStencilRenderBuffer() const {
188 if (stencil) {
189 stencil->bind();
190 }
191 }
192
generateTexture()193 void Layer::generateTexture() {
194 if (!texture.mId) {
195 glGenTextures(1, &texture.mId);
196 }
197 }
198
clearTexture()199 void Layer::clearTexture() {
200 // There's a rare possibility that Caches could have been destroyed already
201 // since this method is queued up as a task.
202 // Since this is a reset method, treat this as non-fatal.
203 if (caches.isInitialized()) {
204 caches.textureState().unbindTexture(texture.mId);
205 }
206 texture.mId = 0;
207 }
208
allocateTexture()209 void Layer::allocateTexture() {
210 #if DEBUG_LAYERS
211 ALOGD(" Allocate layer: %dx%d", getWidth(), getHeight());
212 #endif
213 if (texture.mId) {
214 texture.updateSize(getWidth(), getHeight(), GL_RGBA);
215 glTexImage2D(renderTarget, 0, GL_RGBA, getWidth(), getHeight(), 0,
216 GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
217 }
218 }
219
defer(const OpenGLRenderer & rootRenderer)220 void Layer::defer(const OpenGLRenderer& rootRenderer) {
221 ATRACE_LAYER_WORK("Optimize");
222
223 updateLightPosFromRenderer(rootRenderer);
224 const float width = layer.getWidth();
225 const float height = layer.getHeight();
226
227 if (dirtyRect.isEmpty() || (dirtyRect.left <= 0 && dirtyRect.top <= 0 &&
228 dirtyRect.right >= width && dirtyRect.bottom >= height)) {
229 dirtyRect.set(0, 0, width, height);
230 }
231
232 deferredList.reset(new DeferredDisplayList(dirtyRect));
233
234 DeferStateStruct deferredState(*deferredList, *renderer,
235 RenderNode::kReplayFlag_ClipChildren);
236
237 renderer->setupFrameState(width, height, dirtyRect.left, dirtyRect.top,
238 dirtyRect.right, dirtyRect.bottom, !isBlend());
239
240 renderNode->computeOrdering();
241 renderNode->defer(deferredState, 0);
242
243 deferredUpdateScheduled = false;
244 }
245
cancelDefer()246 void Layer::cancelDefer() {
247 renderNode = nullptr;
248 deferredUpdateScheduled = false;
249 deferredList.reset(nullptr);
250 }
251
flush()252 void Layer::flush() {
253 // renderer is checked as layer may be destroyed/put in layer cache with flush scheduled
254 if (deferredList && renderer) {
255 ATRACE_LAYER_WORK("Issue");
256 renderer->startMark((renderNode.get() != nullptr) ? renderNode->getName() : "Layer");
257
258 renderer->prepareDirty(layer.getWidth(), layer.getHeight(),
259 dirtyRect.left, dirtyRect.top, dirtyRect.right, dirtyRect.bottom, !isBlend());
260
261 deferredList->flush(*renderer, dirtyRect);
262
263 renderer->finish();
264
265 dirtyRect.setEmpty();
266 renderNode = nullptr;
267
268 renderer->endMark();
269 }
270 }
271
render(const OpenGLRenderer & rootRenderer)272 void Layer::render(const OpenGLRenderer& rootRenderer) {
273 ATRACE_LAYER_WORK("Direct-Issue");
274
275 updateLightPosFromRenderer(rootRenderer);
276 renderer->prepareDirty(layer.getWidth(), layer.getHeight(),
277 dirtyRect.left, dirtyRect.top, dirtyRect.right, dirtyRect.bottom, !isBlend());
278
279 renderer->drawRenderNode(renderNode.get(), dirtyRect, RenderNode::kReplayFlag_ClipChildren);
280
281 renderer->finish();
282
283 dirtyRect.setEmpty();
284
285 deferredUpdateScheduled = false;
286 renderNode = nullptr;
287 }
288
postDecStrong()289 void Layer::postDecStrong() {
290 renderState.postDecStrong(this);
291 }
292
293 }; // namespace uirenderer
294 }; // namespace android
295