FloatRect TilingData::tileBoundsNormalized(int tile) const
{
assertTile(tile);
FloatRect bounds(tileBounds(tile));
bounds.scale(1.0f / m_totalSizeX, 1.0f / m_totalSizeY);
return bounds;
}
void CaptureGameEngine::Render(CIwRect& bounds)
{
float tileSize = 64.0f;
float scale = tileSize / 256;
CIwVec2 centerTileTL(bounds.x + (bounds.w - tileSize) / 2, bounds.y + (bounds.h - tileSize) / 2);
for (int x = -1; x <= 1; ++x)
{
for (int y = -1; y <= 1; ++y)
{
CIwRect tileBounds(centerTileTL.x + (x * tileSize), centerTileTL.y + (y * tileSize), tileSize, tileSize);
Utils::AlphaRenderImage(g_pTiles[x+1][y+1], tileBounds, 255);
}
}
s3eLocation loc;
Utils::GetLocation(&loc);
int xDiff = LiveMaps::LongitudeToXAtZoom(loc.m_Longitude, LiveMaps::MaxZoom) - g_topLeft.x;
int yDiff = LiveMaps::LatitudeToYAtZoom(loc.m_Latitude, LiveMaps::MaxZoom) - g_topLeft.y;
CIwRect meLoc(centerTileTL.x + (xDiff * scale) - g_pUserTexture->GetWidth()/4, centerTileTL.y + (yDiff * scale) - g_pUserTexture->GetWidth()/4, g_pUserTexture->GetWidth() / 2, g_pUserTexture->GetWidth() / 2);
Utils::AlphaRenderImage(g_pUserTexture, meLoc, 255);
for (int i = 0; i < g_pCaptures.size(); ++i)
{
int xDiff = LiveMaps::LongitudeToXAtZoom(g_pCaptures[i]->m_Longitude, LiveMaps::MaxZoom) - g_topLeft.x;
int yDiff = LiveMaps::LatitudeToYAtZoom(g_pCaptures[i]->m_Latitude, LiveMaps::MaxZoom) - g_topLeft.y;
CIwRect capLoc(centerTileTL.x + (xDiff * scale) - g_pCursorTexture->GetWidth()/4, centerTileTL.y + (yDiff * scale) - g_pCursorTexture->GetWidth()/4, g_pCursorTexture->GetWidth() / 2, g_pCursorTexture->GetWidth() / 2);
Utils::AlphaRenderImage(g_pCursorTexture, capLoc, 255);
}
}
void FindTheSpotGameEngine::Render(CIwRect& bounds)
{
CIwSVec2 imgBounds(bounds.x, bounds.y);
Utils::AlphaRenderImage(g_pLogoTexture, imgBounds, 0xff);
float tileSize = 160.0f;
if (g_finalScore == 0)
{
CIwRect tileBounds(bounds.x + (bounds.w - tileSize) / 2, bounds.y + (bounds.h - tileSize) / 2, tileSize, tileSize);
Utils::AlphaRenderImage(g_pTile, tileBounds, 255);
CIwColour white;
white.Set(0xff, 0xff, 0xff, 0x7f);
float scale = tileSize / 256.0f;
Iw2DSetColour(white);
Iw2DDrawRect(CIwSVec2(tileBounds.x-1, tileBounds.y-1), CIwSVec2(tileBounds.w+2, tileBounds.h+2));
CIwSVec2 spotLoc(tileBounds.x + (g_tileLoc.x * scale) - (g_pCursorTexture->GetWidth() / 2), tileBounds.y + (g_tileLoc.y * scale) - (g_pCursorTexture->GetHeight() / 2));
Utils::AlphaRenderImage(g_pCursorTexture, spotLoc, 255);
if (g_renderTemp == 1)
{
CIwSVec2 imgBounds(bounds.x, bounds.y + bounds.h - g_pColderTexture->GetHeight());
Utils::AlphaRenderImage(g_pColderTexture, imgBounds, 255);
}
else if (g_renderTemp == 2)
{
CIwSVec2 imgBounds(bounds.x, bounds.y + bounds.h - g_pHotterTexture->GetHeight());
Utils::AlphaRenderImage(g_pHotterTexture, imgBounds, 255);
}
}
else
{
tileSize = g_pFoundTexture->GetWidth();
CIwRect tileBounds(bounds.x + (bounds.w - tileSize) / 2, bounds.y + (bounds.h - tileSize) / 2, tileSize, tileSize);
Utils::AlphaRenderImage(g_pFoundTexture, tileBounds, 255);
}
}
void WorldMapSprite::draw(Renderer *renderer, const RenderContext &cxt){
Grid *grid = worldMap->getMapGrid();
for(int gridX = 0; gridX < grid->getWidth(); gridX++){
for(int gridY = 0; gridY < grid->getHeight(); gridY++){
Vector4 color(grid->sample(gridX, gridY), 0, 0, 1.0);
Vector4 tileBounds(
gridX*gridCellPixelWidth,
gridY*gridCellPixelWidth,
gridCellPixelWidth,
gridCellPixelWidth
);
renderer->fillRect(tileBounds, color, cxt);
}
}
}
std::shared_ptr<TileData> TopoJsonSource::parse(const TileTask& _task,
const MapProjection& _projection) const {
auto& task = static_cast<const DownloadTileTask&>(_task);
std::shared_ptr<TileData> tileData = std::make_shared<TileData>();
// Parse data into a JSON document
const char* error;
size_t offset;
auto document = JsonParseBytes(task.rawTileData->data(), task.rawTileData->size(), &error, &offset);
if (error) {
LOGE("Json parsing failed on tile [%s]: %s (%u)", task.tileId().toString().c_str(), error, offset);
return tileData;
}
// Transform JSON data into a TileData using TopoJson functions
BoundingBox tileBounds(_projection.TileBounds(task.tileId()));
glm::dvec2 tileOrigin = {tileBounds.min.x, tileBounds.max.y*-1.0};
double tileInverseScale = 1.0 / tileBounds.width();
const auto projFn = [&](glm::dvec2 _lonLat){
glm::dvec2 tmp = _projection.LonLatToMeters(_lonLat);
return Point {
(tmp.x - tileOrigin.x) * tileInverseScale,
(tmp.y - tileOrigin.y) * tileInverseScale,
0
};
};
// Parse topology and transform
auto topology = TopoJson::getTopology(document, projFn);
// Parse each TopoJson object as a data layer
auto objectsIt = document.FindMember("objects");
if (objectsIt == document.MemberEnd()) { return tileData; }
auto& objects = objectsIt->value;
for (auto layer = objects.MemberBegin(); layer != objects.MemberEnd(); ++layer) {
tileData->layers.push_back(TopoJson::getLayer(layer, topology, m_id));
}
// Discard JSON object and return TileData
return tileData;
}
std::unique_ptr<AnnotationTile> AnnotationManager::getTile(const TileID& tileID) {
auto tile = std::make_unique<AnnotationTile>();
AnnotationTileLayer& pointLayer = *tile->layers.emplace(
PointLayerID,
std::make_unique<AnnotationTileLayer>()).first->second;
LatLngBounds tileBounds(tileID);
pointTree.query(boost::geometry::index::intersects(tileBounds),
boost::make_function_output_iterator([&](const auto& val){
val->updateLayer(tileID, pointLayer);
}));
for (const auto& shape : shapeAnnotations) {
shape.second->updateTile(tileID, *tile);
}
return tile;
}
IntRect TilingData::tileBoundsWithBorder(int tile) const
{
IntRect bounds = tileBounds(tile);
if (m_borderTexels) {
int x1 = bounds.x();
int x2 = bounds.maxX();
int y1 = bounds.y();
int y2 = bounds.maxY();
if (tileXIndex(tile) > 0)
x1--;
if (tileXIndex(tile) < (numTilesX() - 1))
x2++;
if (tileYIndex(tile) > 0)
y1--;
if (tileYIndex(tile) < (numTilesY() - 1))
y2++;
bounds = IntRect(x1, y1, x2 - x1, y2 - y1);
}
return bounds;
}
void BDPTIntegrator::Render(const Scene &scene) {
std::unique_ptr<LightDistribution> lightDistribution =
CreateLightSampleDistribution(lightSampleStrategy, scene);
// Compute a reverse mapping from light pointers to offsets into the
// scene lights vector (and, equivalently, offsets into
// lightDistr). Added after book text was finalized; this is critical
// to reasonable performance with 100s+ of light sources.
std::unordered_map<const Light *, size_t> lightToIndex;
for (size_t i = 0; i < scene.lights.size(); ++i)
lightToIndex[scene.lights[i].get()] = i;
// Partition the image into tiles
Film *film = camera->film;
const Bounds2i sampleBounds = film->GetSampleBounds();
const Vector2i sampleExtent = sampleBounds.Diagonal();
const int tileSize = 16;
const int nXTiles = (sampleExtent.x + tileSize - 1) / tileSize;
const int nYTiles = (sampleExtent.y + tileSize - 1) / tileSize;
ProgressReporter reporter(nXTiles * nYTiles, "Rendering");
// Allocate buffers for debug visualization
const int bufferCount = (1 + maxDepth) * (6 + maxDepth) / 2;
std::vector<std::unique_ptr<Film>> weightFilms(bufferCount);
if (visualizeStrategies || visualizeWeights) {
for (int depth = 0; depth <= maxDepth; ++depth) {
for (int s = 0; s <= depth + 2; ++s) {
int t = depth + 2 - s;
if (t == 0 || (s == 1 && t == 1)) continue;
std::string filename =
StringPrintf("bdpt_d%02i_s%02i_t%02i.exr", depth, s, t);
weightFilms[BufferIndex(s, t)] = std::unique_ptr<Film>(new Film(
film->fullResolution,
Bounds2f(Point2f(0, 0), Point2f(1, 1)),
std::unique_ptr<Filter>(CreateBoxFilter(ParamSet())),
film->diagonal * 1000, filename, 1.f));
}
}
}
// Render and write the output image to disk
if (scene.lights.size() > 0) {
ParallelFor2D([&](const Point2i tile) {
// Render a single tile using BDPT
MemoryArena arena;
int seed = tile.y * nXTiles + tile.x;
std::unique_ptr<Sampler> tileSampler = sampler->Clone(seed);
int x0 = sampleBounds.pMin.x + tile.x * tileSize;
int x1 = std::min(x0 + tileSize, sampleBounds.pMax.x);
int y0 = sampleBounds.pMin.y + tile.y * tileSize;
int y1 = std::min(y0 + tileSize, sampleBounds.pMax.y);
Bounds2i tileBounds(Point2i(x0, y0), Point2i(x1, y1));
std::unique_ptr<FilmTile> filmTile =
camera->film->GetFilmTile(tileBounds);
for (Point2i pPixel : tileBounds) {
tileSampler->StartPixel(pPixel);
if (!InsideExclusive(pPixel, pixelBounds))
continue;
do {
// Generate a single sample using BDPT
Point2f pFilm = (Point2f)pPixel + tileSampler->Get2D();
// Trace the camera subpath
Vertex *cameraVertices = arena.Alloc<Vertex>(maxDepth + 2);
Vertex *lightVertices = arena.Alloc<Vertex>(maxDepth + 1);
int nCamera = GenerateCameraSubpath(
scene, *tileSampler, arena, maxDepth + 2, *camera,
pFilm, cameraVertices);
// Get a distribution for sampling the light at the
// start of the light subpath. Because the light path
// follows multiple bounces, basing the sampling
// distribution on any of the vertices of the camera
// path is unlikely to be a good strategy. We use the
// PowerLightDistribution by default here, which
// doesn't use the point passed to it.
const Distribution1D *lightDistr =
lightDistribution->Lookup(cameraVertices[0].p());
// Now trace the light subpath
int nLight = GenerateLightSubpath(
scene, *tileSampler, arena, maxDepth + 1,
cameraVertices[0].time(), *lightDistr, lightToIndex,
lightVertices);
// Execute all BDPT connection strategies
Spectrum L(0.f);
for (int t = 1; t <= nCamera; ++t) {
for (int s = 0; s <= nLight; ++s) {
int depth = t + s - 2;
if ((s == 1 && t == 1) || depth < 0 ||
depth > maxDepth)
continue;
// Execute the $(s, t)$ connection strategy and
// update _L_
Point2f pFilmNew = pFilm;
Float misWeight = 0.f;
Spectrum Lpath = ConnectBDPT(
scene, lightVertices, cameraVertices, s, t,
*lightDistr, lightToIndex, *camera, *tileSampler,
&pFilmNew, &misWeight);
VLOG(2) << "Connect bdpt s: " << s <<", t: " << t <<
", Lpath: " << Lpath << ", misWeight: " << misWeight;
if (visualizeStrategies || visualizeWeights) {
Spectrum value;
if (visualizeStrategies)
value =
misWeight == 0 ? 0 : Lpath / misWeight;
if (visualizeWeights) value = Lpath;
weightFilms[BufferIndex(s, t)]->AddSplat(
pFilmNew, value);
}
if (t != 1)
L += Lpath;
else
film->AddSplat(pFilmNew, Lpath);
}
}
VLOG(2) << "Add film sample pFilm: " << pFilm << ", L: " << L <<
", (y: " << L.y() << ")";
filmTile->AddSample(pFilm, L);
arena.Reset();
} while (tileSampler->StartNextSample());
}
film->MergeFilmTile(std::move(filmTile));
reporter.Update();
}, Point2i(nXTiles, nYTiles));
reporter.Done();
}
film->WriteImage(1.0f / sampler->samplesPerPixel);
// Write buffers for debug visualization
if (visualizeStrategies || visualizeWeights) {
const Float invSampleCount = 1.0f / sampler->samplesPerPixel;
for (size_t i = 0; i < weightFilms.size(); ++i)
if (weightFilms[i]) weightFilms[i]->WriteImage(invSampleCount);
}
}
void BoundsCreator::processTile(int z, int i, int j,
BoundsMap& bounds,
VolumeMap& volumes)
{
std::string path = m_stack.getTilePath(0, j, i, 's', z);
printf("%s\n", path.c_str());
PngImage image(path.c_str());
int width = image.getWidth();
int height = image.getHeight();
//printf("width=%d height=%d\n", image.getWidth(), image.getHeight());
// Note that i, j always represent full tiles, because only the
// final edge/corner tile is ever partial
int baseX = m_tilesize * i;
int baseY = m_tilesize * j;
// As a special case for speed if tile is completely empty we can
// union in the bounds in a single step.
if (isTileEmpty(image))
{
int edgeX = baseX + width - 1;
int edgeY = baseY + height - 1;
PixelBoundBox tileBounds(baseX, baseY, edgeX, edgeY);
if (bounds.find(0) == bounds.end())
{
bounds[0] = tileBounds;
volumes[0] = width * height;
}
else
{
bounds[0].unionBounds(tileBounds);
volumes[0] += (width * height);
}
}
else
{
// The tile is not empty, union every pixel separately
for (int tileX = 0; tileX < width; ++tileX)
{
for (int tileY = 0; tileY < height; ++tileY)
{
int x = baseX + tileX;
int y = baseY + tileY;
unsigned int spid = image.getPixelID(tileX, tileY);
if (bounds.find(spid) == bounds.end())
{
bounds[spid] = PixelBoundBox(x, y);
volumes[spid] = 1;
}
else
{
bounds[spid].unionPoint(x, y);
volumes[spid] += 1;
}
}
}
}
}
// SamplerIntegrator Method Definitions
void SamplerIntegrator::Render(const Scene &scene) {
ProfilePhase p(Prof::IntegratorRender);
Preprocess(scene, *sampler);
// Render image tiles in parallel
// Compute number of tiles, _nTiles_, to use for parallel rendering
Bounds2i sampleBounds = camera->film->GetSampleBounds();
Vector2i sampleExtent = sampleBounds.Diagonal();
const int tileSize = 16;
Point2i nTiles((sampleExtent.x + tileSize - 1) / tileSize,
(sampleExtent.y + tileSize - 1) / tileSize);
ProgressReporter reporter(nTiles.x * nTiles.y, "Rendering");
{
StatTimer timer(&renderingTime);
ParallelFor2D([&](Point2i tile) {
// Render section of image corresponding to _tile_
// Allocate _MemoryArena_ for tile
MemoryArena arena;
// Get sampler instance for tile
int seed = tile.y * nTiles.x + tile.x;
std::unique_ptr<Sampler> tileSampler = sampler->Clone(seed);
// Compute sample bounds for tile
int x0 = sampleBounds.pMin.x + tile.x * tileSize;
int x1 = std::min(x0 + tileSize, sampleBounds.pMax.x);
int y0 = sampleBounds.pMin.y + tile.y * tileSize;
int y1 = std::min(y0 + tileSize, sampleBounds.pMax.y);
Bounds2i tileBounds(Point2i(x0, y0), Point2i(x1, y1));
// Get _FilmTile_ for tile
std::unique_ptr<FilmTile> filmTile =
camera->film->GetFilmTile(tileBounds);
// Loop over pixels in tile to render them
for (Point2i pixel : tileBounds) {
{
ProfilePhase pp(Prof::StartPixel);
tileSampler->StartPixel(pixel);
}
do {
// Initialize _CameraSample_ for current sample
CameraSample cameraSample =
tileSampler->GetCameraSample(pixel);
// Generate camera ray for current sample
RayDifferential ray;
Float rayWeight =
camera->GenerateRayDifferential(cameraSample, &ray);
ray.ScaleDifferentials(
1 / std::sqrt((Float)tileSampler->samplesPerPixel));
++nCameraRays;
// Evaluate radiance along camera ray
Spectrum L(0.f);
if (rayWeight > 0) L = Li(ray, scene, *tileSampler, arena);
// Issue warning if unexpected radiance value returned
if (L.HasNaNs()) {
Error(
"Not-a-number radiance value returned "
"for image sample. Setting to black.");
L = Spectrum(0.f);
} else if (L.y() < -1e-5) {
Error(
"Negative luminance value, %f, returned "
"for image sample. Setting to black.",
L.y());
L = Spectrum(0.f);
} else if (std::isinf(L.y())) {
Error(
"Infinite luminance value returned "
"for image sample. Setting to black.");
L = Spectrum(0.f);
}
// Add camera ray's contribution to image
filmTile->AddSample(cameraSample.pFilm, L, rayWeight);
// Free _MemoryArena_ memory from computing image sample
// value
arena.Reset();
} while (tileSampler->StartNextSample());
}
// Merge image tile into _Film_
camera->film->MergeFilmTile(std::move(filmTile));
reporter.Update();
}, nTiles);
reporter.Done();
}
// Save final image after rendering
camera->film->WriteImage();
}
void BDPTIntegrator::Render(const Scene &scene) {
ProfilePhase p(Prof::IntegratorRender);
// Compute _lightDistr_ for sampling lights proportional to power
std::unique_ptr<Distribution1D> lightDistr =
ComputeLightPowerDistribution(scene);
// Partition the image into tiles
Film *film = camera->film;
const Bounds2i sampleBounds = film->GetSampleBounds();
const Vector2i sampleExtent = sampleBounds.Diagonal();
const int tileSize = 16;
const int nXTiles = (sampleExtent.x + tileSize - 1) / tileSize;
const int nYTiles = (sampleExtent.y + tileSize - 1) / tileSize;
ProgressReporter reporter(nXTiles * nYTiles, "Rendering");
// Allocate buffers for debug visualization
const int bufferCount = (1 + maxDepth) * (6 + maxDepth) / 2;
std::vector<std::unique_ptr<Film>> weightFilms(bufferCount);
if (visualizeStrategies || visualizeWeights) {
for (int depth = 0; depth <= maxDepth; ++depth) {
for (int s = 0; s <= depth + 2; ++s) {
int t = depth + 2 - s;
if (t == 0 || (s == 1 && t == 1)) continue;
std::string filename =
StringPrintf("bdpt_d%02i_s%02i_t%02i.exr", depth, s, t);
weightFilms[BufferIndex(s, t)] = std::unique_ptr<Film>(new Film(
film->fullResolution,
Bounds2f(Point2f(0, 0), Point2f(1, 1)),
std::unique_ptr<Filter>(CreateBoxFilter(ParamSet())),
film->diagonal * 1000, filename, 1.f));
}
}
}
// Render and write the output image to disk
if (scene.lights.size() > 0) {
StatTimer timer(&renderingTime);
ParallelFor2D([&](const Point2i tile) {
// Render a single tile using BDPT
MemoryArena arena;
int seed = tile.y * nXTiles + tile.x;
std::unique_ptr<Sampler> tileSampler = sampler->Clone(seed);
int x0 = sampleBounds.pMin.x + tile.x * tileSize;
int x1 = std::min(x0 + tileSize, sampleBounds.pMax.x);
int y0 = sampleBounds.pMin.y + tile.y * tileSize;
int y1 = std::min(y0 + tileSize, sampleBounds.pMax.y);
Bounds2i tileBounds(Point2i(x0, y0), Point2i(x1, y1));
std::unique_ptr<FilmTile> filmTile =
camera->film->GetFilmTile(tileBounds);
for (Point2i pPixel : tileBounds) {
tileSampler->StartPixel(pPixel);
if (!InsideExclusive(pPixel, pixelBounds))
continue;
do {
// Generate a single sample using BDPT
Point2f pFilm = (Point2f)pPixel + tileSampler->Get2D();
// Trace the camera and light subpaths
Vertex *cameraVertices = arena.Alloc<Vertex>(maxDepth + 2);
Vertex *lightVertices = arena.Alloc<Vertex>(maxDepth + 1);
int nCamera = GenerateCameraSubpath(
scene, *tileSampler, arena, maxDepth + 2, *camera,
pFilm, cameraVertices);
int nLight = GenerateLightSubpath(
scene, *tileSampler, arena, maxDepth + 1,
cameraVertices[0].time(), *lightDistr, lightVertices);
// Execute all BDPT connection strategies
Spectrum L(0.f);
for (int t = 1; t <= nCamera; ++t) {
for (int s = 0; s <= nLight; ++s) {
int depth = t + s - 2;
if ((s == 1 && t == 1) || depth < 0 ||
depth > maxDepth)
continue;
// Execute the $(s, t)$ connection strategy and
// update _L_
Point2f pFilmNew = pFilm;
Float misWeight = 0.f;
Spectrum Lpath = ConnectBDPT(
scene, lightVertices, cameraVertices, s, t,
*lightDistr, *camera, *tileSampler, &pFilmNew,
&misWeight);
if (visualizeStrategies || visualizeWeights) {
Spectrum value;
if (visualizeStrategies)
value =
misWeight == 0 ? 0 : Lpath / misWeight;
if (visualizeWeights) value = Lpath;
weightFilms[BufferIndex(s, t)]->AddSplat(
pFilmNew, value);
}
if (t != 1)
L += Lpath;
else
film->AddSplat(pFilmNew, Lpath);
}
}
filmTile->AddSample(pFilm, L);
arena.Reset();
} while (tileSampler->StartNextSample());
}
film->MergeFilmTile(std::move(filmTile));
reporter.Update();
}, Point2i(nXTiles, nYTiles));
reporter.Done();
}
film->WriteImage(1.0f / sampler->samplesPerPixel);
// Write buffers for debug visualization
if (visualizeStrategies || visualizeWeights) {
const Float invSampleCount = 1.0f / sampler->samplesPerPixel;
for (size_t i = 0; i < weightFilms.size(); ++i)
if (weightFilms[i]) weightFilms[i]->WriteImage(invSampleCount);
}
}
bool
ClientTiledLayerBuffer::ComputeProgressiveUpdateRegion(const nsIntRegion& aInvalidRegion,
const nsIntRegion& aOldValidRegion,
nsIntRegion& aRegionToPaint,
BasicTiledLayerPaintData* aPaintData,
bool aIsRepeated)
{
aRegionToPaint = aInvalidRegion;
// If the composition bounds rect is empty, we can't make any sensible
// decision about how to update coherently. In this case, just update
// everything in one transaction.
if (aPaintData->mCompositionBounds.IsEmpty()) {
aPaintData->mPaintFinished = true;
return false;
}
// If this is a low precision buffer, we force progressive updates. The
// assumption is that the contents is less important, so visual coherency
// is lower priority than speed.
bool drawingLowPrecision = IsLowPrecision();
// Find out if we have any non-stale content to update.
nsIntRegion staleRegion;
staleRegion.And(aInvalidRegion, aOldValidRegion);
// Find out the current view transform to determine which tiles to draw
// first, and see if we should just abort this paint. Aborting is usually
// caused by there being an incoming, more relevant paint.
ParentLayerRect compositionBounds;
CSSToParentLayerScale zoom;
#if defined(MOZ_WIDGET_ANDROID)
bool abortPaint = mManager->ProgressiveUpdateCallback(!staleRegion.Contains(aInvalidRegion),
compositionBounds, zoom,
!drawingLowPrecision);
#else
MOZ_ASSERT(mSharedFrameMetricsHelper);
ContainerLayer* parent = mThebesLayer->AsLayer()->GetParent();
bool abortPaint =
mSharedFrameMetricsHelper->UpdateFromCompositorFrameMetrics(
parent,
!staleRegion.Contains(aInvalidRegion),
drawingLowPrecision,
compositionBounds,
zoom);
#endif
if (abortPaint) {
// We ignore if front-end wants to abort if this is the first,
// non-low-precision paint, as in that situation, we're about to override
// front-end's page/viewport metrics.
if (!aPaintData->mFirstPaint || drawingLowPrecision) {
PROFILER_LABEL("ContentClient", "Abort painting");
aRegionToPaint.SetEmpty();
return aIsRepeated;
}
}
// Transform the screen coordinates into transformed layout device coordinates.
LayoutDeviceRect transformedCompositionBounds =
TransformCompositionBounds(compositionBounds, zoom, aPaintData->mScrollOffset,
aPaintData->mResolution, aPaintData->mTransformParentLayerToLayout);
// Paint tiles that have stale content or that intersected with the screen
// at the time of issuing the draw command in a single transaction first.
// This is to avoid rendering glitches on animated page content, and when
// layers change size/shape.
LayoutDeviceRect coherentUpdateRect =
transformedCompositionBounds.Intersect(aPaintData->mCompositionBounds);
nsIntRect roundedCoherentUpdateRect =
LayoutDeviceIntRect::ToUntyped(RoundedOut(coherentUpdateRect));
aRegionToPaint.And(aInvalidRegion, roundedCoherentUpdateRect);
aRegionToPaint.Or(aRegionToPaint, staleRegion);
bool drawingStale = !aRegionToPaint.IsEmpty();
if (!drawingStale) {
aRegionToPaint = aInvalidRegion;
}
// Prioritise tiles that are currently visible on the screen.
bool paintVisible = false;
if (aRegionToPaint.Intersects(roundedCoherentUpdateRect)) {
aRegionToPaint.And(aRegionToPaint, roundedCoherentUpdateRect);
paintVisible = true;
}
// Paint area that's visible and overlaps previously valid content to avoid
// visible glitches in animated elements, such as gifs.
bool paintInSingleTransaction = paintVisible && (drawingStale || aPaintData->mFirstPaint);
// The following code decides what order to draw tiles in, based on the
// current scroll direction of the primary scrollable layer.
NS_ASSERTION(!aRegionToPaint.IsEmpty(), "Unexpectedly empty paint region!");
nsIntRect paintBounds = aRegionToPaint.GetBounds();
int startX, incX, startY, incY;
int tileLength = GetScaledTileLength();
if (aPaintData->mScrollOffset.x >= aPaintData->mLastScrollOffset.x) {
startX = RoundDownToTileEdge(paintBounds.x);
incX = tileLength;
} else {
startX = RoundDownToTileEdge(paintBounds.XMost() - 1);
incX = -tileLength;
}
if (aPaintData->mScrollOffset.y >= aPaintData->mLastScrollOffset.y) {
startY = RoundDownToTileEdge(paintBounds.y);
incY = tileLength;
} else {
startY = RoundDownToTileEdge(paintBounds.YMost() - 1);
incY = -tileLength;
}
// Find a tile to draw.
nsIntRect tileBounds(startX, startY, tileLength, tileLength);
int32_t scrollDiffX = aPaintData->mScrollOffset.x - aPaintData->mLastScrollOffset.x;
int32_t scrollDiffY = aPaintData->mScrollOffset.y - aPaintData->mLastScrollOffset.y;
// This loop will always terminate, as there is at least one tile area
// along the first/last row/column intersecting with regionToPaint, or its
// bounds would have been smaller.
while (true) {
aRegionToPaint.And(aInvalidRegion, tileBounds);
if (!aRegionToPaint.IsEmpty()) {
break;
}
if (Abs(scrollDiffY) >= Abs(scrollDiffX)) {
tileBounds.x += incX;
} else {
tileBounds.y += incY;
}
}
if (!aRegionToPaint.Contains(aInvalidRegion)) {
// The region needed to paint is larger then our progressive chunk size
// therefore update what we want to paint and ask for a new paint transaction.
// If we need to draw more than one tile to maintain coherency, make
// sure it happens in the same transaction by requesting this work be
// repeated immediately.
// If this is unnecessary, the remaining work will be done tile-by-tile in
// subsequent transactions.
if (!drawingLowPrecision && paintInSingleTransaction) {
return true;
}
mManager->SetRepeatTransaction();
return false;
}
// We're not repeating painting and we've not requested a repeat transaction,
// so the paint is finished. If there's still a separate low precision
// paint to do, it will get marked as unfinished later.
aPaintData->mPaintFinished = true;
return false;
}
