gecko/widget/gonk/HwcComposer2D.cpp
Nicolas Silva 391cf268bb Bug 863324 - Rename PLayers into PLayerTransaction, r=jrmuizel
--HG--
rename : gfx/layers/ipc/ShadowLayersChild.cpp => gfx/layers/ipc/LayerTransactionChild.cpp
rename : gfx/layers/ipc/ShadowLayersChild.h => gfx/layers/ipc/LayerTransactionChild.h
rename : gfx/layers/ipc/ShadowLayersParent.cpp => gfx/layers/ipc/LayerTransactionParent.cpp
rename : gfx/layers/ipc/ShadowLayersParent.h => gfx/layers/ipc/LayerTransactionParent.h
rename : gfx/layers/ipc/PLayers.ipdl => gfx/layers/ipc/PLayerTransaction.ipdl
2013-04-24 14:42:40 -04:00

434 lines
13 KiB
C++

/*
* Copyright (c) 2012, The Linux Foundation. All rights reserved.
*
* 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 <android/log.h>
#include "Framebuffer.h"
#include "HwcComposer2D.h"
#include "LayerManagerOGL.h"
#include "mozilla/layers/PLayerTransaction.h"
#include "mozilla/layers/ShadowLayerUtilsGralloc.h"
#include "mozilla/StaticPtr.h"
#include "cutils/properties.h"
#include "gfxUtils.h"
#define LOG_TAG "HWComposer"
#if (LOG_NDEBUG == 0)
#define LOGD(args...) __android_log_print(ANDROID_LOG_DEBUG, LOG_TAG, ## args)
#else
#define LOGD(args...) ((void)0)
#endif
#define LOGE(args...) __android_log_print(ANDROID_LOG_ERROR, LOG_TAG, ## args)
#define LAYER_COUNT_INCREMENTS 5
using namespace android;
using namespace mozilla::layers;
enum {
HWC_USE_GPU = HWC_FRAMEBUFFER,
HWC_USE_OVERLAY = HWC_OVERLAY,
HWC_USE_COPYBIT
};
// HWC layer flags
enum {
// Draw a solid color rectangle
// The color should be set on the transform member of the hwc_layer_t struct
// The expected format is a 32 bit ABGR with 8 bits per component
HWC_COLOR_FILL = 0x8
};
namespace mozilla {
static StaticRefPtr<HwcComposer2D> sInstance;
HwcComposer2D::HwcComposer2D()
: mMaxLayerCount(0)
, mList(nullptr)
{
}
HwcComposer2D::~HwcComposer2D() {
free(mList);
}
int
HwcComposer2D::Init(hwc_display_t dpy, hwc_surface_t sur)
{
MOZ_ASSERT(!Initialized());
if (int err = init()) {
LOGE("Failed to initialize hwc");
return err;
}
nsIntSize screenSize;
mozilla::Framebuffer::GetSize(&screenSize);
mScreenRect = nsIntRect(nsIntPoint(0, 0), screenSize);
char propValue[PROPERTY_VALUE_MAX];
property_get("ro.display.colorfill", propValue, "0");
mColorFill = (atoi(propValue) == 1) ? true : false;
mDpy = dpy;
mSur = sur;
return 0;
}
HwcComposer2D*
HwcComposer2D::GetInstance()
{
if (!sInstance) {
LOGD("Creating new instance");
sInstance = new HwcComposer2D();
}
return sInstance;
}
bool
HwcComposer2D::ReallocLayerList()
{
int size = sizeof(hwc_layer_list_t) +
((mMaxLayerCount + LAYER_COUNT_INCREMENTS) * sizeof(hwc_layer_t));
hwc_layer_list_t* listrealloc = (hwc_layer_list_t*)realloc(mList, size);
if (!listrealloc) {
return false;
}
if (!mList) {
//first alloc, initialize
listrealloc->numHwLayers = 0;
listrealloc->flags = 0;
}
mList = listrealloc;
mMaxLayerCount += LAYER_COUNT_INCREMENTS;
return true;
}
/**
* Sets hwc layer rectangles required for hwc composition
*
* @param aVisible Input. Layer's unclipped visible rectangle
* The origin is the top-left corner of the layer
* @param aTransform Input. Layer's transformation matrix
* It transforms from layer space to screen space
* @param aClip Input. A clipping rectangle.
* The origin is the top-left corner of the screen
* @param aBufferRect Input. The layer's buffer bounds
* The origin is the top-left corner of the layer
* @param aSurceCrop Output. Area of the source to consider,
* the origin is the top-left corner of the buffer
* @param aVisibleRegionScreen Output. Visible region in screen space.
* The origin is the top-left corner of the screen
* @return true if the layer should be rendered.
* false if the layer can be skipped
*/
static bool
PrepareLayerRects(nsIntRect aVisible, const gfxMatrix& aTransform,
nsIntRect aClip, nsIntRect aBufferRect,
hwc_rect_t* aSourceCrop, hwc_rect_t* aVisibleRegionScreen) {
gfxRect visibleRect(aVisible);
gfxRect clip(aClip);
gfxRect visibleRectScreen = aTransform.TransformBounds(visibleRect);
// |clip| is guaranteed to be integer
visibleRectScreen.IntersectRect(visibleRectScreen, clip);
if (visibleRectScreen.IsEmpty()) {
LOGD("Skip layer");
return false;
}
gfxMatrix inverse(aTransform);
inverse.Invert();
gfxRect crop = inverse.TransformBounds(visibleRectScreen);
//clip to buffer size
crop.IntersectRect(crop, aBufferRect);
crop.RoundOut();
if (crop.IsEmpty()) {
LOGD("Skip layer");
return false;
}
//propagate buffer clipping back to visible rect
visibleRectScreen = aTransform.TransformBounds(crop);
visibleRectScreen.RoundOut();
// Map from layer space to buffer space
crop -= aBufferRect.TopLeft();
aSourceCrop->left = crop.x;
aSourceCrop->top = crop.y;
aSourceCrop->right = crop.x + crop.width;
aSourceCrop->bottom = crop.y + crop.height;
aVisibleRegionScreen->left = visibleRectScreen.x;
aVisibleRegionScreen->top = visibleRectScreen.y;
aVisibleRegionScreen->right = visibleRectScreen.x + visibleRectScreen.width;
aVisibleRegionScreen->bottom = visibleRectScreen.y + visibleRectScreen.height;
return true;
}
/**
* Calculates the layer's clipping rectangle
*
* @param aTransform Input. A transformation matrix
* It transforms the clip rect to screen space
* @param aLayerClip Input. The layer's internal clipping rectangle.
* This may be NULL which means the layer has no internal clipping
* The origin is the top-left corner of the layer
* @param aParentClip Input. The parent layer's rendering clipping rectangle
* The origin is the top-left corner of the screen
* @param aRenderClip Output. The layer's rendering clipping rectangle
* The origin is the top-left corner of the screen
* @return true if the layer should be rendered.
* false if the layer can be skipped
*/
static bool
CalculateClipRect(const gfxMatrix& aTransform, const nsIntRect* aLayerClip,
nsIntRect aParentClip, nsIntRect* aRenderClip) {
*aRenderClip = aParentClip;
if (!aLayerClip) {
return true;
}
if (aLayerClip->IsEmpty()) {
return false;
}
nsIntRect clip = *aLayerClip;
gfxRect r(clip);
gfxRect trClip = aTransform.TransformBounds(r);
trClip.Round();
gfxUtils::GfxRectToIntRect(trClip, &clip);
aRenderClip->IntersectRect(*aRenderClip, clip);
return true;
}
bool
HwcComposer2D::PrepareLayerList(Layer* aLayer,
const nsIntRect& aClip,
const gfxMatrix& aParentTransform,
const gfxMatrix& aGLWorldTransform)
{
// NB: we fall off this path whenever there are container layers
// that require intermediate surfaces. That means all the
// GetEffective*() coordinates are relative to the framebuffer.
bool fillColor = false;
const nsIntRegion& visibleRegion = aLayer->GetEffectiveVisibleRegion();
if (visibleRegion.IsEmpty()) {
return true;
}
float opacity = aLayer->GetEffectiveOpacity();
if (opacity <= 0) {
LOGD("Layer is fully transparent so skip rendering");
return true;
}
else if (opacity < 1) {
LOGD("Layer has planar semitransparency which is unsupported");
return false;
}
if (visibleRegion.GetNumRects() > 1) {
// FIXME/bug 808339
LOGD("Layer has nontrivial visible region");
return false;
}
nsIntRect clip;
if (!CalculateClipRect(aParentTransform * aGLWorldTransform,
aLayer->GetEffectiveClipRect(),
aClip,
&clip))
{
LOGD("Clip rect is empty. Skip layer");
return true;
}
gfxMatrix transform;
const gfx3DMatrix& transform3D = aLayer->GetEffectiveTransform();
if (!transform3D.Is2D(&transform) || !transform.PreservesAxisAlignedRectangles()) {
LOGD("Layer has a 3D transform or a non-square angle rotation");
return false;
}
if (ContainerLayer* container = aLayer->AsContainerLayer()) {
if (container->UseIntermediateSurface()) {
LOGD("Container layer needs intermediate surface");
return false;
}
nsAutoTArray<Layer*, 12> children;
container->SortChildrenBy3DZOrder(children);
for (uint32_t i = 0; i < children.Length(); i++) {
if (!PrepareLayerList(children[i], clip, transform, aGLWorldTransform)) {
return false;
}
}
return true;
}
LayerOGL* layerGL = static_cast<LayerOGL*>(aLayer->ImplData());
LayerRenderState state = layerGL->GetRenderState();
if (!state.mSurface ||
state.mSurface->type() != SurfaceDescriptor::TSurfaceDescriptorGralloc) {
if (aLayer->AsColorLayer() && mColorFill) {
fillColor = true;
} else {
LOGD("Layer doesn't have a gralloc buffer");
return false;
}
}
if (state.BufferRotated()) {
LOGD("Layer has a rotated buffer");
return false;
}
// OK! We can compose this layer with hwc.
int current = mList ? mList->numHwLayers : 0;
if (!mList || current >= mMaxLayerCount) {
if (!ReallocLayerList() || current >= mMaxLayerCount) {
LOGE("PrepareLayerList failed! Could not increase the maximum layer count");
return false;
}
}
sp<GraphicBuffer> buffer = fillColor ? nullptr : GrallocBufferActor::GetFrom(*state.mSurface);
nsIntRect visibleRect = visibleRegion.GetBounds();
nsIntRect bufferRect;
if (fillColor) {
bufferRect = nsIntRect(visibleRect);
} else {
if(state.mHasOwnOffset) {
bufferRect = nsIntRect(state.mOffset.x, state.mOffset.y,
int(buffer->getWidth()), int(buffer->getHeight()));
} else {
bufferRect = nsIntRect(visibleRect.x, visibleRect.y,
int(buffer->getWidth()), int(buffer->getHeight()));
}
}
hwc_layer_t& hwcLayer = mList->hwLayers[current];
if(!PrepareLayerRects(visibleRect,
transform * aGLWorldTransform,
clip,
bufferRect,
&(hwcLayer.sourceCrop),
&(hwcLayer.displayFrame)))
{
return true;
}
buffer_handle_t handle = fillColor ? nullptr : buffer->getNativeBuffer()->handle;
hwcLayer.handle = handle;
hwcLayer.flags = 0;
hwcLayer.hints = 0;
hwcLayer.blending = HWC_BLENDING_PREMULT;
hwcLayer.compositionType = HWC_USE_COPYBIT;
if (!fillColor) {
gfxMatrix rotation = transform * aGLWorldTransform;
// Compute fuzzy equal like PreservesAxisAlignedRectangles()
if (fabs(rotation.xx) < 1e-6) {
if (rotation.xy < 0) {
hwcLayer.transform = HWC_TRANSFORM_ROT_90;
LOGD("Layer buffer rotated 90 degrees");
} else {
hwcLayer.transform = HWC_TRANSFORM_ROT_270;
LOGD("Layer buffer rotated 270 degrees");
}
} else if (rotation.xx < 0) {
hwcLayer.transform = HWC_TRANSFORM_ROT_180;
LOGD("Layer buffer rotated 180 degrees");
} else {
hwcLayer.transform = 0;
}
hwcLayer.transform |= state.YFlipped() ? HWC_TRANSFORM_FLIP_V : 0;
hwc_region_t region;
region.numRects = 1;
region.rects = &(hwcLayer.displayFrame);
hwcLayer.visibleRegionScreen = region;
} else {
hwcLayer.flags |= HWC_COLOR_FILL;
ColorLayer* colorLayer = static_cast<ColorLayer*>(layerGL->GetLayer());
hwcLayer.transform = colorLayer->GetColor().Packed();
}
mList->numHwLayers++;
return true;
}
bool
HwcComposer2D::TryRender(Layer* aRoot,
const gfxMatrix& aGLWorldTransform)
{
if (!aGLWorldTransform.PreservesAxisAlignedRectangles()) {
LOGD("Render aborted. World transform has non-square angle rotation");
return false;
}
MOZ_ASSERT(Initialized());
if (mList) {
mList->numHwLayers = 0;
}
if (!PrepareLayerList(aRoot,
mScreenRect,
gfxMatrix(),
aGLWorldTransform))
{
LOGD("Render aborted. Nothing was drawn to the screen");
return false;
}
if (mHwc->set(mHwc, mDpy, mSur, mList)) {
LOGE("Hardware device failed to render");
return false;
}
LOGD("Frame rendered");
return true;
}
} // namespace mozilla