libs/hwui/Layer.cpp - platform/frameworks/base - Git at Google

 /*
  * Copyright (C) 2012 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */

 #define LOG_TAG "OpenGLRenderer"

 #include <utils/Log.h>

 #include "Caches.h"
 #include "DeferredDisplayList.h"
 #include "Layer.h"
 #include "LayerRenderer.h"
 #include "OpenGLRenderer.h"
 #include "RenderNode.h"
 #include "RenderState.h"
 #include "utils/TraceUtils.h"

 #define ATRACE_LAYER_WORK(label) \
     ATRACE_FORMAT("%s HW Layer DisplayList %s %ux%u", \
             label, \
             (renderNode.get() != NULL) ? renderNode->getName() : "", \
             getWidth(), getHeight())

 namespace android {
 namespace uirenderer {

 Layer::Layer(Type layerType, RenderState& renderState, const uint32_t layerWidth, const uint32_t layerHeight)
         : state(kState_Uncached)
         , caches(Caches::getInstance())
         , renderState(renderState)
         , texture(caches)
         , type(layerType) {
     // TODO: This is a violation of Android's typical ref counting, but it
     // preserves the old inc/dec ref locations. This should be changed...
     incStrong(0);
     mesh = NULL;
     meshElementCount = 0;
     cacheable = true;
     dirty = false;
     renderTarget = GL_TEXTURE_2D;
     texture.width = layerWidth;
     texture.height = layerHeight;
     colorFilter = NULL;
     deferredUpdateScheduled = false;
     renderer = NULL;
     renderNode = NULL;
     fbo = 0;
     stencil = NULL;
     debugDrawUpdate = false;
     hasDrawnSinceUpdate = false;
     forceFilter = false;
     deferredList = NULL;
     convexMask = NULL;
     rendererLightPosDirty = true;
     wasBuildLayered = false;
     renderState.registerLayer(this);
 }

 Layer::~Layer() {
     renderState.unregisterLayer(this);
     SkSafeUnref(colorFilter);

     if (stencil || fbo || texture.id) {
         renderState.requireGLContext();
         removeFbo();
         deleteTexture();
     }

     delete[] mesh;
     delete deferredList;
     delete renderer;
 }

 void Layer::onGlContextLost() {
     removeFbo();
     deleteTexture();
 }

 uint32_t Layer::computeIdealWidth(uint32_t layerWidth) {
     return uint32_t(ceilf(layerWidth / float(LAYER_SIZE)) * LAYER_SIZE);
 }

 uint32_t Layer::computeIdealHeight(uint32_t layerHeight) {
     return uint32_t(ceilf(layerHeight / float(LAYER_SIZE)) * LAYER_SIZE);
 }

 void Layer::requireRenderer() {
     if (!renderer) {
         renderer = new LayerRenderer(renderState, this);
         renderer->initProperties();
     }
 }

 void Layer::updateLightPosFromRenderer(const OpenGLRenderer& rootRenderer) {
     if (renderer && rendererLightPosDirty) {
         // re-init renderer's light position, based upon last cached location in window
         Vector3 lightPos = rootRenderer.getLightCenter();
         cachedInvTransformInWindow.mapPoint3d(lightPos);
         renderer->initLight(lightPos, rootRenderer.getLightRadius(),
                 rootRenderer.getAmbientShadowAlpha(), rootRenderer.getSpotShadowAlpha());
         rendererLightPosDirty = false;
     }
 }

 bool Layer::resize(const uint32_t width, const uint32_t height) {
     uint32_t desiredWidth = computeIdealWidth(width);
     uint32_t desiredHeight = computeIdealWidth(height);

     if (desiredWidth <= getWidth() && desiredHeight <= getHeight()) {
         return true;
     }

     ATRACE_NAME("resizeLayer");

     const uint32_t maxTextureSize = caches.maxTextureSize;
     if (desiredWidth > maxTextureSize || desiredHeight > maxTextureSize) {
         ALOGW("Layer exceeds max. dimensions supported by the GPU (%dx%d, max=%dx%d)",
                 desiredWidth, desiredHeight, maxTextureSize, maxTextureSize);
         return false;
     }

     uint32_t oldWidth = getWidth();
     uint32_t oldHeight = getHeight();

     setSize(desiredWidth, desiredHeight);

     if (fbo) {
         caches.activeTexture(0);
         bindTexture();
         allocateTexture();

         if (glGetError() != GL_NO_ERROR) {
             setSize(oldWidth, oldHeight);
             return false;
         }
     }

     if (stencil) {
         stencil->bind();
         stencil->resize(desiredWidth, desiredHeight);

         if (glGetError() != GL_NO_ERROR) {
             setSize(oldWidth, oldHeight);
             return false;
         }
     }

     return true;
 }

 void Layer::removeFbo(bool flush) {
     if (stencil) {
         GLuint previousFbo = renderState.getFramebuffer();
         renderState.bindFramebuffer(fbo);
         glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, 0);
         renderState.bindFramebuffer(previousFbo);

         caches.renderBufferCache.put(stencil);
         stencil = NULL;
     }

     if (fbo) {
         if (flush) LayerRenderer::flushLayer(renderState, this);
         // If put fails the cache will delete the FBO
         caches.fboCache.put(fbo);
         fbo = 0;
     }
 }

 void Layer::updateDeferred(RenderNode* renderNode, int left, int top, int right, int bottom) {
     requireRenderer();
     this->renderNode = renderNode;
     const Rect r(left, top, right, bottom);
     dirtyRect.unionWith(r);
     deferredUpdateScheduled = true;
 }

 void Layer::setPaint(const SkPaint* paint) {
     OpenGLRenderer::getAlphaAndModeDirect(paint, &alpha, &mode);
     setColorFilter((paint) ? paint->getColorFilter() : NULL);
 }

 void Layer::setColorFilter(SkColorFilter* filter) {
     SkRefCnt_SafeAssign(colorFilter, filter);
 }

 void Layer::bindTexture() const {
     if (texture.id) {
         caches.bindTexture(renderTarget, texture.id);
     }
 }

 void Layer::bindStencilRenderBuffer() const {
     if (stencil) {
         stencil->bind();
     }
 }

 void Layer::generateTexture() {
     if (!texture.id) {
         glGenTextures(1, &texture.id);
     }
 }

 void Layer::deleteTexture() {
     if (texture.id) {
         texture.deleteTexture();
         texture.id = 0;
     }
 }

 void Layer::clearTexture() {
     caches.unbindTexture(texture.id);
     texture.id = 0;
 }

 void Layer::allocateTexture() {
 #if DEBUG_LAYERS
     ALOGD("  Allocate layer: %dx%d", getWidth(), getHeight());
 #endif
     if (texture.id) {
         glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
         glTexImage2D(renderTarget, 0, GL_RGBA, getWidth(), getHeight(), 0,
                 GL_RGBA, GL_UNSIGNED_BYTE, NULL);
     }
 }

 void Layer::defer(const OpenGLRenderer& rootRenderer) {
     ATRACE_LAYER_WORK("Optimize");

     updateLightPosFromRenderer(rootRenderer);
     const float width = layer.getWidth();
     const float height = layer.getHeight();

     if (dirtyRect.isEmpty() || (dirtyRect.left <= 0 && dirtyRect.top <= 0 &&
             dirtyRect.right >= width && dirtyRect.bottom >= height)) {
         dirtyRect.set(0, 0, width, height);
     }

     delete deferredList;
     deferredList = new DeferredDisplayList(dirtyRect);

     DeferStateStruct deferredState(*deferredList, *renderer,
             RenderNode::kReplayFlag_ClipChildren);

     renderer->setViewport(width, height);
     renderer->setupFrameState(dirtyRect.left, dirtyRect.top,
             dirtyRect.right, dirtyRect.bottom, !isBlend());

     renderNode->computeOrdering();
     renderNode->defer(deferredState, 0);

     deferredUpdateScheduled = false;
 }

 void Layer::cancelDefer() {
     renderNode = NULL;
     deferredUpdateScheduled = false;
     if (deferredList) {
         delete deferredList;
         deferredList = NULL;
     }
 }

 void Layer::flush() {
     // renderer is checked as layer may be destroyed/put in layer cache with flush scheduled
     if (deferredList && renderer) {
         ATRACE_LAYER_WORK("Issue");
         renderer->startMark((renderNode.get() != NULL) ? renderNode->getName() : "Layer");

         renderer->setViewport(layer.getWidth(), layer.getHeight());
         renderer->prepareDirty(dirtyRect.left, dirtyRect.top, dirtyRect.right, dirtyRect.bottom,
                 !isBlend());

         deferredList->flush(*renderer, dirtyRect);

         renderer->finish();

         dirtyRect.setEmpty();
         renderNode = NULL;

         renderer->endMark();
     }
 }

 void Layer::render(const OpenGLRenderer& rootRenderer) {
     ATRACE_LAYER_WORK("Direct-Issue");

     updateLightPosFromRenderer(rootRenderer);
     renderer->setViewport(layer.getWidth(), layer.getHeight());
     renderer->prepareDirty(dirtyRect.left, dirtyRect.top, dirtyRect.right, dirtyRect.bottom,
             !isBlend());

     renderer->drawRenderNode(renderNode.get(), dirtyRect, RenderNode::kReplayFlag_ClipChildren);

     renderer->finish();

     dirtyRect.setEmpty();

     deferredUpdateScheduled = false;
     renderNode = NULL;
 }

 void Layer::postDecStrong() {
     renderState.postDecStrong(this);
 }

 }; // namespace uirenderer
 }; // namespace android
	/*
	* Copyright (C) 2012 The Android Open Source Project
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/

	#define LOG_TAG "OpenGLRenderer"

	#include <utils/Log.h>

	#include "Caches.h"
	#include "DeferredDisplayList.h"
	#include "Layer.h"
	#include "LayerRenderer.h"
	#include "OpenGLRenderer.h"
	#include "RenderNode.h"
	#include "RenderState.h"
	#include "utils/TraceUtils.h"

	#define ATRACE_LAYER_WORK(label) \
	ATRACE_FORMAT("%s HW Layer DisplayList %s %ux%u", \
	label, \
	(renderNode.get() != NULL) ? renderNode->getName() : "", \
	getWidth(), getHeight())

	namespace android {
	namespace uirenderer {

	Layer::Layer(Type layerType, RenderState& renderState, const uint32_t layerWidth, const uint32_t layerHeight)
	: state(kState_Uncached)
	, caches(Caches::getInstance())
	, renderState(renderState)
	, texture(caches)
	, type(layerType) {
	// TODO: This is a violation of Android's typical ref counting, but it
	// preserves the old inc/dec ref locations. This should be changed...
	incStrong(0);
	mesh = NULL;
	meshElementCount = 0;
	cacheable = true;
	dirty = false;
	renderTarget = GL_TEXTURE_2D;
	texture.width = layerWidth;
	texture.height = layerHeight;
	colorFilter = NULL;
	deferredUpdateScheduled = false;
	renderer = NULL;
	renderNode = NULL;
	fbo = 0;
	stencil = NULL;
	debugDrawUpdate = false;
	hasDrawnSinceUpdate = false;
	forceFilter = false;
	deferredList = NULL;
	convexMask = NULL;
	rendererLightPosDirty = true;
	wasBuildLayered = false;
	renderState.registerLayer(this);
	}

	Layer::~Layer() {
	renderState.unregisterLayer(this);
	SkSafeUnref(colorFilter);

	if (stencil \|\| fbo \|\| texture.id) {
	renderState.requireGLContext();
	removeFbo();
	deleteTexture();
	}

	delete[] mesh;
	delete deferredList;
	delete renderer;
	}

	void Layer::onGlContextLost() {
	removeFbo();
	deleteTexture();
	}

	uint32_t Layer::computeIdealWidth(uint32_t layerWidth) {
	return uint32_t(ceilf(layerWidth / float(LAYER_SIZE)) * LAYER_SIZE);
	}

	uint32_t Layer::computeIdealHeight(uint32_t layerHeight) {
	return uint32_t(ceilf(layerHeight / float(LAYER_SIZE)) * LAYER_SIZE);
	}

	void Layer::requireRenderer() {
	if (!renderer) {
	renderer = new LayerRenderer(renderState, this);
	renderer->initProperties();
	}
	}

	void Layer::updateLightPosFromRenderer(const OpenGLRenderer& rootRenderer) {
	if (renderer && rendererLightPosDirty) {
	// re-init renderer's light position, based upon last cached location in window
	Vector3 lightPos = rootRenderer.getLightCenter();
	cachedInvTransformInWindow.mapPoint3d(lightPos);
	renderer->initLight(lightPos, rootRenderer.getLightRadius(),
	rootRenderer.getAmbientShadowAlpha(), rootRenderer.getSpotShadowAlpha());
	rendererLightPosDirty = false;
	}
	}

	bool Layer::resize(const uint32_t width, const uint32_t height) {
	uint32_t desiredWidth = computeIdealWidth(width);
	uint32_t desiredHeight = computeIdealWidth(height);

	if (desiredWidth <= getWidth() && desiredHeight <= getHeight()) {
	return true;
	}

	ATRACE_NAME("resizeLayer");

	const uint32_t maxTextureSize = caches.maxTextureSize;
	if (desiredWidth > maxTextureSize \|\| desiredHeight > maxTextureSize) {
	ALOGW("Layer exceeds max. dimensions supported by the GPU (%dx%d, max=%dx%d)",
	desiredWidth, desiredHeight, maxTextureSize, maxTextureSize);
	return false;
	}

	uint32_t oldWidth = getWidth();
	uint32_t oldHeight = getHeight();

	setSize(desiredWidth, desiredHeight);

	if (fbo) {
	caches.activeTexture(0);
	bindTexture();
	allocateTexture();

	if (glGetError() != GL_NO_ERROR) {
	setSize(oldWidth, oldHeight);
	return false;
	}
	}

	if (stencil) {
	stencil->bind();
	stencil->resize(desiredWidth, desiredHeight);

	if (glGetError() != GL_NO_ERROR) {
	setSize(oldWidth, oldHeight);
	return false;
	}
	}

	return true;
	}

	void Layer::removeFbo(bool flush) {
	if (stencil) {
	GLuint previousFbo = renderState.getFramebuffer();
	renderState.bindFramebuffer(fbo);
	glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, 0);
	renderState.bindFramebuffer(previousFbo);

	caches.renderBufferCache.put(stencil);
	stencil = NULL;
	}

	if (fbo) {
	if (flush) LayerRenderer::flushLayer(renderState, this);
	// If put fails the cache will delete the FBO
	caches.fboCache.put(fbo);
	fbo = 0;
	}
	}

	void Layer::updateDeferred(RenderNode* renderNode, int left, int top, int right, int bottom) {
	requireRenderer();
	this->renderNode = renderNode;
	const Rect r(left, top, right, bottom);
	dirtyRect.unionWith(r);
	deferredUpdateScheduled = true;
	}

	void Layer::setPaint(const SkPaint* paint) {
	OpenGLRenderer::getAlphaAndModeDirect(paint, &alpha, &mode);
	setColorFilter((paint) ? paint->getColorFilter() : NULL);
	}

	void Layer::setColorFilter(SkColorFilter* filter) {
	SkRefCnt_SafeAssign(colorFilter, filter);
	}

	void Layer::bindTexture() const {
	if (texture.id) {
	caches.bindTexture(renderTarget, texture.id);
	}
	}

	void Layer::bindStencilRenderBuffer() const {
	if (stencil) {
	stencil->bind();
	}
	}

	void Layer::generateTexture() {
	if (!texture.id) {
	glGenTextures(1, &texture.id);
	}
	}

	void Layer::deleteTexture() {
	if (texture.id) {
	texture.deleteTexture();
	texture.id = 0;
	}
	}

	void Layer::clearTexture() {
	caches.unbindTexture(texture.id);
	texture.id = 0;
	}

	void Layer::allocateTexture() {
	#if DEBUG_LAYERS
	ALOGD(" Allocate layer: %dx%d", getWidth(), getHeight());
	#endif
	if (texture.id) {
	glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
	glTexImage2D(renderTarget, 0, GL_RGBA, getWidth(), getHeight(), 0,
	GL_RGBA, GL_UNSIGNED_BYTE, NULL);
	}
	}

	void Layer::defer(const OpenGLRenderer& rootRenderer) {
	ATRACE_LAYER_WORK("Optimize");

	updateLightPosFromRenderer(rootRenderer);
	const float width = layer.getWidth();
	const float height = layer.getHeight();

	if (dirtyRect.isEmpty() \|\| (dirtyRect.left <= 0 && dirtyRect.top <= 0 &&
	dirtyRect.right >= width && dirtyRect.bottom >= height)) {
	dirtyRect.set(0, 0, width, height);
	}

	delete deferredList;
	deferredList = new DeferredDisplayList(dirtyRect);

	DeferStateStruct deferredState(deferredList, renderer,
	RenderNode::kReplayFlag_ClipChildren);

	renderer->setViewport(width, height);
	renderer->setupFrameState(dirtyRect.left, dirtyRect.top,
	dirtyRect.right, dirtyRect.bottom, !isBlend());

	renderNode->computeOrdering();
	renderNode->defer(deferredState, 0);

	deferredUpdateScheduled = false;
	}

	void Layer::cancelDefer() {
	renderNode = NULL;
	deferredUpdateScheduled = false;
	if (deferredList) {
	delete deferredList;
	deferredList = NULL;
	}
	}

	void Layer::flush() {
	// renderer is checked as layer may be destroyed/put in layer cache with flush scheduled
	if (deferredList && renderer) {
	ATRACE_LAYER_WORK("Issue");
	renderer->startMark((renderNode.get() != NULL) ? renderNode->getName() : "Layer");

	renderer->setViewport(layer.getWidth(), layer.getHeight());
	renderer->prepareDirty(dirtyRect.left, dirtyRect.top, dirtyRect.right, dirtyRect.bottom,
	!isBlend());

	deferredList->flush(*renderer, dirtyRect);

	renderer->finish();

	dirtyRect.setEmpty();
	renderNode = NULL;

	renderer->endMark();
	}
	}

	void Layer::render(const OpenGLRenderer& rootRenderer) {
	ATRACE_LAYER_WORK("Direct-Issue");

	updateLightPosFromRenderer(rootRenderer);
	renderer->setViewport(layer.getWidth(), layer.getHeight());
	renderer->prepareDirty(dirtyRect.left, dirtyRect.top, dirtyRect.right, dirtyRect.bottom,
	!isBlend());

	renderer->drawRenderNode(renderNode.get(), dirtyRect, RenderNode::kReplayFlag_ClipChildren);

	renderer->finish();

	dirtyRect.setEmpty();

	deferredUpdateScheduled = false;
	renderNode = NULL;
	}

	void Layer::postDecStrong() {
	renderState.postDecStrong(this);
	}

	}; // namespace uirenderer
	}; // namespace android