mirror of
https://github.com/mozilla/gecko-dev.git
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769 lines
24 KiB
C++
769 lines
24 KiB
C++
/*
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* Copyright (c) 2012, 2013 The Linux Foundation. All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <android/log.h>
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#include <string.h>
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#include "libdisplay/GonkDisplay.h"
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#include "Framebuffer.h"
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#include "GLContext.h" // for GLContext
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#include "HwcUtils.h"
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#include "HwcComposer2D.h"
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#include "mozilla/layers/LayerManagerComposite.h"
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#include "mozilla/layers/PLayerTransaction.h"
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#include "mozilla/layers/ShadowLayerUtilsGralloc.h"
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#include "mozilla/layers/TextureHostOGL.h" // for TextureHostOGL
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#include "mozilla/StaticPtr.h"
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#include "cutils/properties.h"
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#include "gfx2DGlue.h"
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#if ANDROID_VERSION >= 17
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#include "libdisplay/FramebufferSurface.h"
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#ifndef HWC_BLIT
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#define HWC_BLIT (HWC_FRAMEBUFFER_TARGET + 1)
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#endif
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#endif
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#ifdef LOG_TAG
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#undef LOG_TAG
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#endif
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#define LOG_TAG "HWComposer"
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/*
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* By default the debug message of hwcomposer (LOG_DEBUG level) are undefined,
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* but can be enabled by uncommenting HWC_DEBUG below.
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*/
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//#define HWC_DEBUG
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#ifdef HWC_DEBUG
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#define LOGD(args...) __android_log_print(ANDROID_LOG_DEBUG, LOG_TAG, ## args)
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#else
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#define LOGD(args...) ((void)0)
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#endif
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#define LOGI(args...) __android_log_print(ANDROID_LOG_INFO, LOG_TAG, ## args)
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#define LOGE(args...) __android_log_print(ANDROID_LOG_ERROR, LOG_TAG, ## args)
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#define LAYER_COUNT_INCREMENTS 5
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using namespace android;
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using namespace mozilla::layers;
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namespace mozilla {
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static StaticRefPtr<HwcComposer2D> sInstance;
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HwcComposer2D::HwcComposer2D()
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: mHwc(nullptr)
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, mList(nullptr)
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, mMaxLayerCount(0)
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, mColorFill(false)
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, mRBSwapSupport(false)
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#if ANDROID_VERSION >= 17
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, mPrevRetireFence(Fence::NO_FENCE)
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, mPrevDisplayFence(Fence::NO_FENCE)
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#endif
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, mPrepared(false)
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{
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}
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HwcComposer2D::~HwcComposer2D() {
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free(mList);
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}
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int
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HwcComposer2D::Init(hwc_display_t dpy, hwc_surface_t sur)
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{
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MOZ_ASSERT(!Initialized());
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mHwc = (HwcDevice*)GetGonkDisplay()->GetHWCDevice();
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if (!mHwc) {
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LOGE("Failed to initialize hwc");
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return -1;
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}
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nsIntSize screenSize;
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mozilla::Framebuffer::GetSize(&screenSize);
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mScreenRect = nsIntRect(nsIntPoint(0, 0), screenSize);
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#if ANDROID_VERSION >= 17
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int supported = 0;
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if (mHwc->query) {
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if (mHwc->query(mHwc, HwcUtils::HWC_COLOR_FILL, &supported) == NO_ERROR) {
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mColorFill = !!supported;
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}
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if (mHwc->query(mHwc, HwcUtils::HWC_FORMAT_RB_SWAP, &supported) == NO_ERROR) {
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mRBSwapSupport = !!supported;
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}
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} else {
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mColorFill = false;
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mRBSwapSupport = false;
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}
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#else
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char propValue[PROPERTY_VALUE_MAX];
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property_get("ro.display.colorfill", propValue, "0");
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mColorFill = (atoi(propValue) == 1) ? true : false;
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mRBSwapSupport = true;
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#endif
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mDpy = dpy;
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mSur = sur;
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return 0;
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}
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HwcComposer2D*
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HwcComposer2D::GetInstance()
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{
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if (!sInstance) {
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LOGI("Creating new instance");
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sInstance = new HwcComposer2D();
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}
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return sInstance;
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}
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bool
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HwcComposer2D::ReallocLayerList()
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{
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int size = sizeof(HwcList) +
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((mMaxLayerCount + LAYER_COUNT_INCREMENTS) * sizeof(HwcLayer));
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HwcList* listrealloc = (HwcList*)realloc(mList, size);
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if (!listrealloc) {
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return false;
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}
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if (!mList) {
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//first alloc, initialize
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listrealloc->numHwLayers = 0;
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listrealloc->flags = 0;
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}
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mList = listrealloc;
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mMaxLayerCount += LAYER_COUNT_INCREMENTS;
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return true;
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}
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void
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HwcComposer2D::setCrop(HwcLayer* layer, hwc_rect_t srcCrop)
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{
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#if ANDROID_VERSION >= 19
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if (mHwc->common.version >= HWC_DEVICE_API_VERSION_1_3) {
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layer->sourceCropf.left = srcCrop.left;
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layer->sourceCropf.top = srcCrop.top;
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layer->sourceCropf.right = srcCrop.right;
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layer->sourceCropf.bottom = srcCrop.bottom;
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} else {
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layer->sourceCrop = srcCrop;
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}
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#else
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layer->sourceCrop = srcCrop;
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#endif
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}
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bool
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HwcComposer2D::PrepareLayerList(Layer* aLayer,
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const nsIntRect& aClip,
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const gfxMatrix& aParentTransform,
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const gfxMatrix& aGLWorldTransform)
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{
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// NB: we fall off this path whenever there are container layers
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// that require intermediate surfaces. That means all the
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// GetEffective*() coordinates are relative to the framebuffer.
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bool fillColor = false;
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const nsIntRegion& visibleRegion = aLayer->GetEffectiveVisibleRegion();
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if (visibleRegion.IsEmpty()) {
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return true;
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}
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uint8_t opacity = std::min(0xFF, (int)(aLayer->GetEffectiveOpacity() * 256.0));
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#if ANDROID_VERSION < 18
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if (opacity < 0xFF) {
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LOGD("%s Layer has planar semitransparency which is unsupported", aLayer->Name());
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return false;
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}
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#endif
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nsIntRect clip;
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if (!HwcUtils::CalculateClipRect(aParentTransform * aGLWorldTransform,
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aLayer->GetEffectiveClipRect(),
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aClip,
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&clip))
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{
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LOGD("%s Clip rect is empty. Skip layer", aLayer->Name());
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return true;
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}
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// HWC supports only the following 2D transformations:
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//
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// Scaling via the sourceCrop and displayFrame in HwcLayer
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// Translation via the sourceCrop and displayFrame in HwcLayer
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// Rotation (in square angles only) via the HWC_TRANSFORM_ROT_* flags
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// Reflection (horizontal and vertical) via the HWC_TRANSFORM_FLIP_* flags
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//
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// A 2D transform with PreservesAxisAlignedRectangles() has all the attributes
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// above
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gfxMatrix transform;
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gfx3DMatrix transform3D;
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gfx::To3DMatrix(aLayer->GetEffectiveTransform(), transform3D);
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if (!transform3D.Is2D(&transform) || !transform.PreservesAxisAlignedRectangles()) {
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LOGD("Layer has a 3D transform or a non-square angle rotation");
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return false;
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}
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if (ContainerLayer* container = aLayer->AsContainerLayer()) {
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if (container->UseIntermediateSurface()) {
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LOGD("Container layer needs intermediate surface");
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return false;
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}
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nsAutoTArray<Layer*, 12> children;
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container->SortChildrenBy3DZOrder(children);
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for (uint32_t i = 0; i < children.Length(); i++) {
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if (!PrepareLayerList(children[i], clip, transform, aGLWorldTransform)) {
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return false;
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}
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}
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return true;
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}
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LayerRenderState state = aLayer->GetRenderState();
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nsIntSize surfaceSize;
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if (state.mSurface.get()) {
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surfaceSize = state.mSize;
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} else {
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if (aLayer->AsColorLayer() && mColorFill) {
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fillColor = true;
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} else {
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LOGD("%s Layer doesn't have a gralloc buffer", aLayer->Name());
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return false;
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}
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}
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// Buffer rotation is not to be confused with the angled rotation done by a transform matrix
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// It's a fancy ThebesLayer feature used for scrolling
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if (state.BufferRotated()) {
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LOGD("%s Layer has a rotated buffer", aLayer->Name());
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return false;
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}
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// OK! We can compose this layer with hwc.
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int current = mList ? mList->numHwLayers : 0;
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if (!mList || current >= mMaxLayerCount) {
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if (!ReallocLayerList() || current >= mMaxLayerCount) {
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LOGE("PrepareLayerList failed! Could not increase the maximum layer count");
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return false;
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}
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}
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nsIntRect visibleRect = visibleRegion.GetBounds();
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nsIntRect bufferRect;
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if (fillColor) {
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bufferRect = nsIntRect(visibleRect);
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} else {
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if(state.mHasOwnOffset) {
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bufferRect = nsIntRect(state.mOffset.x, state.mOffset.y,
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state.mSize.width, state.mSize.height);
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} else {
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//Since the buffer doesn't have its own offset, assign the whole
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//surface size as its buffer bounds
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bufferRect = nsIntRect(0, 0, state.mSize.width, state.mSize.height);
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}
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}
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HwcLayer& hwcLayer = mList->hwLayers[current];
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hwc_rect_t sourceCrop;
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if(!HwcUtils::PrepareLayerRects(visibleRect,
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transform * aGLWorldTransform,
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clip,
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bufferRect,
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state.YFlipped(),
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&(sourceCrop),
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&(hwcLayer.displayFrame)))
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{
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return true;
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}
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setCrop(&hwcLayer, sourceCrop);
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buffer_handle_t handle = fillColor ? nullptr : state.mSurface->getNativeBuffer()->handle;
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hwcLayer.handle = handle;
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hwcLayer.flags = 0;
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hwcLayer.hints = 0;
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hwcLayer.blending = HWC_BLENDING_PREMULT;
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if ((opacity == 0xFF) && (aLayer->GetContentFlags() & Layer::CONTENT_OPAQUE)) {
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hwcLayer.blending = HWC_BLENDING_NONE;
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}
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#if ANDROID_VERSION >= 17
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hwcLayer.compositionType = HWC_FRAMEBUFFER;
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hwcLayer.acquireFenceFd = -1;
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hwcLayer.releaseFenceFd = -1;
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#if ANDROID_VERSION >= 18
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hwcLayer.planeAlpha = opacity;
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#endif
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#else
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hwcLayer.compositionType = HwcUtils::HWC_USE_COPYBIT;
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#endif
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if (!fillColor) {
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if (state.FormatRBSwapped()) {
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if (!mRBSwapSupport) {
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LOGD("No R/B swap support in H/W Composer");
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return false;
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}
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hwcLayer.flags |= HwcUtils::HWC_FORMAT_RB_SWAP;
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}
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// Translation and scaling have been addressed in PrepareLayerRects().
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// Given the above and that we checked for PreservesAxisAlignedRectangles()
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// the only possible transformations left to address are
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// square angle rotation and horizontal/vertical reflection.
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//
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// The rotation and reflection permutations total 16 but can be
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// reduced to 8 transformations after eliminating redundancies.
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//
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// All matrices represented here are in the form
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//
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// | xx xy |
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// | yx yy |
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//
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// And ignore scaling.
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//
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// Reflection is applied before rotation
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gfxMatrix rotation = transform * aGLWorldTransform;
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// Compute fuzzy zero like PreservesAxisAlignedRectangles()
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if (fabs(rotation.xx) < 1e-6) {
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if (rotation.xy < 0) {
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if (rotation.yx > 0) {
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// 90 degree rotation
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//
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// | 0 -1 |
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// | 1 0 |
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//
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hwcLayer.transform = HWC_TRANSFORM_ROT_90;
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LOGD("Layer rotated 90 degrees");
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}
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else {
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// Horizontal reflection then 90 degree rotation
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//
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// | 0 -1 | | -1 0 | = | 0 -1 |
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// | 1 0 | | 0 1 | | -1 0 |
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//
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// same as vertical reflection then 270 degree rotation
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//
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// | 0 1 | | 1 0 | = | 0 -1 |
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// | -1 0 | | 0 -1 | | -1 0 |
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//
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hwcLayer.transform = HWC_TRANSFORM_ROT_90 | HWC_TRANSFORM_FLIP_H;
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LOGD("Layer vertically reflected then rotated 270 degrees");
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}
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} else {
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if (rotation.yx < 0) {
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// 270 degree rotation
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//
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// | 0 1 |
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// | -1 0 |
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//
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hwcLayer.transform = HWC_TRANSFORM_ROT_270;
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LOGD("Layer rotated 270 degrees");
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}
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else {
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// Vertical reflection then 90 degree rotation
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//
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// | 0 1 | | -1 0 | = | 0 1 |
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// | -1 0 | | 0 1 | | 1 0 |
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//
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// Same as horizontal reflection then 270 degree rotation
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//
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// | 0 -1 | | 1 0 | = | 0 1 |
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// | 1 0 | | 0 -1 | | 1 0 |
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//
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hwcLayer.transform = HWC_TRANSFORM_ROT_90 | HWC_TRANSFORM_FLIP_V;
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LOGD("Layer horizontally reflected then rotated 270 degrees");
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}
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}
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} else if (rotation.xx < 0) {
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if (rotation.yy > 0) {
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// Horizontal reflection
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//
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// | -1 0 |
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// | 0 1 |
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//
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hwcLayer.transform = HWC_TRANSFORM_FLIP_H;
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LOGD("Layer rotated 180 degrees");
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}
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else {
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// 180 degree rotation
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//
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// | -1 0 |
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// | 0 -1 |
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//
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// Same as horizontal and vertical reflection
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//
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// | -1 0 | | 1 0 | = | -1 0 |
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// | 0 1 | | 0 -1 | | 0 -1 |
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//
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hwcLayer.transform = HWC_TRANSFORM_ROT_180;
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LOGD("Layer rotated 180 degrees");
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}
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} else {
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if (rotation.yy < 0) {
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// Vertical reflection
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//
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// | 1 0 |
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// | 0 -1 |
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//
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hwcLayer.transform = HWC_TRANSFORM_FLIP_V;
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LOGD("Layer rotated 180 degrees");
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}
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else {
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// No rotation or reflection
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//
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// | 1 0 |
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// | 0 1 |
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//
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hwcLayer.transform = 0;
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}
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}
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if (state.YFlipped()) {
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// Invert vertical reflection flag if it was already set
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hwcLayer.transform ^= HWC_TRANSFORM_FLIP_V;
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}
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hwc_region_t region;
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if (visibleRegion.GetNumRects() > 1) {
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mVisibleRegions.push_back(HwcUtils::RectVector());
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HwcUtils::RectVector* visibleRects = &(mVisibleRegions.back());
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if(!HwcUtils::PrepareVisibleRegion(visibleRegion,
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transform * aGLWorldTransform,
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clip,
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bufferRect,
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visibleRects)) {
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return true;
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}
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region.numRects = visibleRects->size();
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region.rects = &((*visibleRects)[0]);
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} else {
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region.numRects = 1;
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region.rects = &(hwcLayer.displayFrame);
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}
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hwcLayer.visibleRegionScreen = region;
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} else {
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hwcLayer.flags |= HwcUtils::HWC_COLOR_FILL;
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ColorLayer* colorLayer = aLayer->AsColorLayer();
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if (colorLayer->GetColor().a < 1.0) {
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LOGD("Color layer has semitransparency which is unsupported");
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return false;
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}
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hwcLayer.transform = colorLayer->GetColor().Packed();
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}
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mHwcLayerMap.AppendElement(static_cast<LayerComposite*>(aLayer->ImplData()));
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mList->numHwLayers++;
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return true;
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}
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#if ANDROID_VERSION >= 17
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bool
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HwcComposer2D::TryHwComposition()
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{
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FramebufferSurface* fbsurface = (FramebufferSurface*)(GetGonkDisplay()->GetFBSurface());
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if (!(fbsurface && fbsurface->lastHandle)) {
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LOGD("H/W Composition failed. FBSurface not initialized.");
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return false;
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}
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// Add FB layer
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int idx = mList->numHwLayers++;
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if (idx >= mMaxLayerCount) {
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if (!ReallocLayerList() || idx >= mMaxLayerCount) {
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LOGE("TryHwComposition failed! Could not add FB layer");
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return false;
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}
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}
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Prepare(fbsurface->lastHandle, -1);
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|
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/* Possible composition paths, after hwc prepare:
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1. GPU Composition
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2. BLIT Composition
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3. Full OVERLAY Composition
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4. Partial OVERLAY Composition (GPU + OVERLAY) */
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bool gpuComposite = false;
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bool blitComposite = false;
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bool overlayComposite = true;
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for (int j=0; j < idx; j++) {
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if (mList->hwLayers[j].compositionType == HWC_FRAMEBUFFER ||
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mList->hwLayers[j].compositionType == HWC_BLIT) {
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// Full OVERLAY composition is not possible on this frame
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// It is either GPU / BLIT / partial OVERLAY composition.
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overlayComposite = false;
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break;
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}
|
|
}
|
|
|
|
if (!overlayComposite) {
|
|
for (int k=0; k < idx; k++) {
|
|
switch (mList->hwLayers[k].compositionType) {
|
|
case HWC_FRAMEBUFFER:
|
|
gpuComposite = true;
|
|
break;
|
|
case HWC_BLIT:
|
|
blitComposite = true;
|
|
break;
|
|
case HWC_OVERLAY:
|
|
// HWC will compose HWC_OVERLAY layers in partial
|
|
// Overlay Composition, set layer composition flag
|
|
// on mapped LayerComposite to skip GPU composition
|
|
mHwcLayerMap[k]->SetLayerComposited(true);
|
|
if ((mList->hwLayers[k].hints & HWC_HINT_CLEAR_FB) &&
|
|
(mList->hwLayers[k].blending == HWC_BLENDING_NONE)) {
|
|
// Clear visible rect on FB with transparent pixels.
|
|
hwc_rect_t r = mList->hwLayers[k].displayFrame;
|
|
mHwcLayerMap[k]->SetClearRect(nsIntRect(r.left, r.top,
|
|
r.right - r.left,
|
|
r.bottom - r.top));
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (gpuComposite) {
|
|
// GPU or partial OVERLAY Composition
|
|
return false;
|
|
} else if (blitComposite) {
|
|
// BLIT Composition, flip FB target
|
|
GetGonkDisplay()->UpdateFBSurface(mDpy, mSur);
|
|
FramebufferSurface* fbsurface = (FramebufferSurface*)(GetGonkDisplay()->GetFBSurface());
|
|
if (!fbsurface) {
|
|
LOGE("H/W Composition failed. NULL FBSurface.");
|
|
return false;
|
|
}
|
|
mList->hwLayers[idx].handle = fbsurface->lastHandle;
|
|
mList->hwLayers[idx].acquireFenceFd = fbsurface->lastFenceFD;
|
|
}
|
|
}
|
|
|
|
// BLIT or full OVERLAY Composition
|
|
Commit();
|
|
|
|
GetGonkDisplay()->SetFBReleaseFd(mList->hwLayers[idx].releaseFenceFd);
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
HwcComposer2D::Render(EGLDisplay dpy, EGLSurface sur)
|
|
{
|
|
if (!mList) {
|
|
// After boot, HWC list hasn't been created yet
|
|
return GetGonkDisplay()->SwapBuffers(dpy, sur);
|
|
}
|
|
|
|
GetGonkDisplay()->UpdateFBSurface(dpy, sur);
|
|
|
|
FramebufferSurface* fbsurface = (FramebufferSurface*)(GetGonkDisplay()->GetFBSurface());
|
|
if (!fbsurface) {
|
|
LOGE("H/W Composition failed. FBSurface not initialized.");
|
|
return false;
|
|
}
|
|
|
|
if (mPrepared) {
|
|
// No mHwc prepare, if already prepared in current draw cycle
|
|
mList->hwLayers[mList->numHwLayers - 1].handle = fbsurface->lastHandle;
|
|
mList->hwLayers[mList->numHwLayers - 1].acquireFenceFd = fbsurface->lastFenceFD;
|
|
} else {
|
|
mList->numHwLayers = 2;
|
|
mList->hwLayers[0].hints = 0;
|
|
mList->hwLayers[0].compositionType = HWC_BACKGROUND;
|
|
mList->hwLayers[0].flags = HWC_SKIP_LAYER;
|
|
mList->hwLayers[0].backgroundColor = {0};
|
|
mList->hwLayers[0].acquireFenceFd = -1;
|
|
mList->hwLayers[0].releaseFenceFd = -1;
|
|
mList->hwLayers[0].displayFrame = {0, 0, mScreenRect.width, mScreenRect.height};
|
|
Prepare(fbsurface->lastHandle, fbsurface->lastFenceFD);
|
|
}
|
|
|
|
// GPU or partial HWC Composition
|
|
Commit();
|
|
|
|
GetGonkDisplay()->SetFBReleaseFd(mList->hwLayers[mList->numHwLayers - 1].releaseFenceFd);
|
|
return true;
|
|
}
|
|
|
|
void
|
|
HwcComposer2D::Prepare(buffer_handle_t fbHandle, int fence)
|
|
{
|
|
int idx = mList->numHwLayers - 1;
|
|
const hwc_rect_t r = {0, 0, mScreenRect.width, mScreenRect.height};
|
|
hwc_display_contents_1_t *displays[HWC_NUM_DISPLAY_TYPES] = { nullptr };
|
|
|
|
displays[HWC_DISPLAY_PRIMARY] = mList;
|
|
mList->flags = HWC_GEOMETRY_CHANGED;
|
|
mList->outbufAcquireFenceFd = -1;
|
|
mList->outbuf = nullptr;
|
|
mList->retireFenceFd = -1;
|
|
|
|
mList->hwLayers[idx].hints = 0;
|
|
mList->hwLayers[idx].flags = 0;
|
|
mList->hwLayers[idx].transform = 0;
|
|
mList->hwLayers[idx].handle = fbHandle;
|
|
mList->hwLayers[idx].blending = HWC_BLENDING_PREMULT;
|
|
mList->hwLayers[idx].compositionType = HWC_FRAMEBUFFER_TARGET;
|
|
setCrop(&mList->hwLayers[idx], r);
|
|
mList->hwLayers[idx].displayFrame = r;
|
|
mList->hwLayers[idx].visibleRegionScreen.numRects = 1;
|
|
mList->hwLayers[idx].visibleRegionScreen.rects = &mList->hwLayers[idx].displayFrame;
|
|
mList->hwLayers[idx].acquireFenceFd = fence;
|
|
mList->hwLayers[idx].releaseFenceFd = -1;
|
|
#if ANDROID_VERSION >= 18
|
|
mList->hwLayers[idx].planeAlpha = 0xFF;
|
|
#endif
|
|
if (mPrepared) {
|
|
LOGE("Multiple hwc prepare calls!");
|
|
}
|
|
mHwc->prepare(mHwc, HWC_NUM_DISPLAY_TYPES, displays);
|
|
mPrepared = true;
|
|
}
|
|
|
|
bool
|
|
HwcComposer2D::Commit()
|
|
{
|
|
hwc_display_contents_1_t *displays[HWC_NUM_DISPLAY_TYPES] = { nullptr };
|
|
displays[HWC_DISPLAY_PRIMARY] = mList;
|
|
|
|
int err = mHwc->set(mHwc, HWC_NUM_DISPLAY_TYPES, displays);
|
|
|
|
mPrevDisplayFence = mPrevRetireFence;
|
|
mPrevRetireFence = Fence::NO_FENCE;
|
|
|
|
for (uint32_t j=0; j < (mList->numHwLayers - 1); j++) {
|
|
if (mList->hwLayers[j].releaseFenceFd >= 0) {
|
|
int fd = mList->hwLayers[j].releaseFenceFd;
|
|
mList->hwLayers[j].releaseFenceFd = -1;
|
|
sp<Fence> fence = new Fence(fd);
|
|
|
|
LayerRenderState state = mHwcLayerMap[j]->GetLayer()->GetRenderState();
|
|
if (!state.mTexture) {
|
|
continue;
|
|
}
|
|
TextureHostOGL* texture = state.mTexture->AsHostOGL();
|
|
if (!texture) {
|
|
continue;
|
|
}
|
|
texture->SetReleaseFence(fence);
|
|
}
|
|
}
|
|
|
|
if (mList->retireFenceFd >= 0) {
|
|
mPrevRetireFence = new Fence(mList->retireFenceFd);
|
|
}
|
|
|
|
mPrepared = false;
|
|
return !err;
|
|
}
|
|
|
|
void
|
|
HwcComposer2D::Reset()
|
|
{
|
|
LOGD("hwcomposer is already prepared, reset with null set");
|
|
hwc_display_contents_1_t *displays[HWC_NUM_DISPLAY_TYPES] = { nullptr };
|
|
displays[HWC_DISPLAY_PRIMARY] = nullptr;
|
|
mHwc->set(mHwc, HWC_DISPLAY_PRIMARY, displays);
|
|
mPrepared = false;
|
|
}
|
|
#else
|
|
bool
|
|
HwcComposer2D::TryHwComposition()
|
|
{
|
|
return !mHwc->set(mHwc, mDpy, mSur, mList);
|
|
}
|
|
|
|
bool
|
|
HwcComposer2D::Render(EGLDisplay dpy, EGLSurface sur)
|
|
{
|
|
return GetGonkDisplay()->SwapBuffers(dpy, sur);
|
|
}
|
|
|
|
void
|
|
HwcComposer2D::Reset()
|
|
{
|
|
mPrepared = false;
|
|
}
|
|
#endif
|
|
|
|
bool
|
|
HwcComposer2D::TryRender(Layer* aRoot,
|
|
const gfx::Matrix& GLWorldTransform)
|
|
{
|
|
gfxMatrix aGLWorldTransform = ThebesMatrix(GLWorldTransform);
|
|
if (!aGLWorldTransform.PreservesAxisAlignedRectangles()) {
|
|
LOGD("Render aborted. World transform has non-square angle rotation");
|
|
return false;
|
|
}
|
|
|
|
MOZ_ASSERT(Initialized());
|
|
if (mList) {
|
|
mList->numHwLayers = 0;
|
|
mHwcLayerMap.Clear();
|
|
}
|
|
|
|
if (mPrepared) {
|
|
Reset();
|
|
}
|
|
|
|
// XXX: The clear() below means all rect vectors will be have to be
|
|
// reallocated. We may want to avoid this if possible
|
|
mVisibleRegions.clear();
|
|
|
|
MOZ_ASSERT(mHwcLayerMap.IsEmpty());
|
|
if (!PrepareLayerList(aRoot,
|
|
mScreenRect,
|
|
gfxMatrix(),
|
|
aGLWorldTransform))
|
|
{
|
|
LOGD("Render aborted. Nothing was drawn to the screen");
|
|
return false;
|
|
}
|
|
|
|
if (!TryHwComposition()) {
|
|
LOGD("H/W Composition failed");
|
|
return false;
|
|
}
|
|
|
|
LOGD("Frame rendered");
|
|
return true;
|
|
}
|
|
|
|
} // namespace mozilla
|