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/*
* 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.
*/
#include "Layer.h"
#include "Caches.h"
#include "DeferredDisplayList.h"
#include "LayerRenderer.h"
#include "OpenGLRenderer.h"
#include "RenderNode.h"
#include "renderstate/RenderState.h"
#include "utils/TraceUtils.h"
#include <utils/Log.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, uint32_t layerWidth, uint32_t layerHeight)
: state(State::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(nullptr);
renderTarget = GL_TEXTURE_2D;
texture.width = layerWidth;
texture.height = layerHeight;
renderState.registerLayer(this);
}
Layer::~Layer() {
renderState.unregisterLayer(this);
SkSafeUnref(colorFilter);
if (stencil || fbo || texture.id) {
renderState.requireGLContext();
removeFbo();
deleteTexture();
}
delete[] mesh;
}
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.reset(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(rootRenderer.getLightRadius(),
rootRenderer.getAmbientShadowAlpha(),
rootRenderer.getSpotShadowAlpha());
renderer->setLightCenter(lightPos);
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.textureState().activateTexture(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 = nullptr;
}
if (fbo) {
if (flush) LayerRenderer::flushLayer(renderState, this);
renderState.deleteFramebuffer(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) {
alpha = PaintUtils::getAlphaDirect(paint);
mode = PaintUtils::getXfermodeDirect(paint);
setColorFilter((paint) ? paint->getColorFilter() : nullptr);
}
void Layer::setColorFilter(SkColorFilter* filter) {
SkRefCnt_SafeAssign(colorFilter, filter);
}
void Layer::bindTexture() const {
if (texture.id) {
caches.textureState().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.textureState().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, nullptr);
}
}
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);
}
deferredList.reset(new DeferredDisplayList(dirtyRect));
DeferStateStruct deferredState(*deferredList, *renderer,
RenderNode::kReplayFlag_ClipChildren);
renderer->setupFrameState(width, height, dirtyRect.left, dirtyRect.top,
dirtyRect.right, dirtyRect.bottom, !isBlend());
renderNode->computeOrdering();
renderNode->defer(deferredState, 0);
deferredUpdateScheduled = false;
}
void Layer::cancelDefer() {
renderNode = nullptr;
deferredUpdateScheduled = false;
deferredList.reset(nullptr);
}
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() != nullptr) ? renderNode->getName() : "Layer");
renderer->prepareDirty(layer.getWidth(), layer.getHeight(),
dirtyRect.left, dirtyRect.top, dirtyRect.right, dirtyRect.bottom, !isBlend());
deferredList->flush(*renderer, dirtyRect);
renderer->finish();
dirtyRect.setEmpty();
renderNode = nullptr;
renderer->endMark();
}
}
void Layer::render(const OpenGLRenderer& rootRenderer) {
ATRACE_LAYER_WORK("Direct-Issue");
updateLightPosFromRenderer(rootRenderer);
renderer->prepareDirty(layer.getWidth(), layer.getHeight(),
dirtyRect.left, dirtyRect.top, dirtyRect.right, dirtyRect.bottom, !isBlend());
renderer->drawRenderNode(renderNode.get(), dirtyRect, RenderNode::kReplayFlag_ClipChildren);
renderer->finish();
dirtyRect.setEmpty();
deferredUpdateScheduled = false;
renderNode = nullptr;
}
void Layer::postDecStrong() {
renderState.postDecStrong(this);
}
}; // namespace uirenderer
}; // namespace android