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// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/viz/service/display/ca_layer_overlay.h"
#include <algorithm>
#include <limits>
#include <variant>
#include "base/metrics/histogram_macros.h"
#include "build/build_config.h"
#include "components/viz/common/features.h"
#include "components/viz/common/quads/aggregated_render_pass_draw_quad.h"
#include "components/viz/common/quads/draw_quad.h"
#include "components/viz/common/quads/solid_color_draw_quad.h"
#include "components/viz/common/quads/texture_draw_quad.h"
#include "components/viz/common/quads/tile_draw_quad.h"
#include "components/viz/service/display/display_resource_provider.h"
#include "ui/base/cocoa/remote_layer_api.h"
#include "ui/gfx/buffer_types.h"
#include "ui/gl/gl_bindings.h"
namespace viz {
namespace {
// The CoreAnimation renderer's performance starts suffering when too many
// quads are promoted to CALayers. At extremes, corruption can occur.
// https://crbug.com/1022116
// The default CALayer number allowed for CoreAnimation when kCALayerNewLimit is
// disabled.
constexpr size_t kLayerLimitDefault = 128;
// The new limit if kCALayerNewLimit is enabled. It can be overridden by the
// "default" feature parameters.
constexpr size_t kLayerNewLimitDefault = 1024;
// The default CALayer number allowed for CoreAnimation with many videos (video
// count >= kMaxNumVideos) when kCALayerNewLimit is disabled.
constexpr size_t kLayerLimitWithManyVideos = 300;
// The new limit with many videos if kCALayerNewLimit is enabled. It can be
// overridden by the "many-video" feature parameters.
constexpr size_t kLayerNewLimitWithManyVideos = 1024;
// If there are too many RenderPassDrawQuads, we shouldn't use Core
// Animation to present them as individual layers, since that potentially
// doubles the amount of work needed to present them. cc has to blit them into
// an IOSurface, and then Core Animation has to blit them to the final surface.
// https://crbug.com/636884.
const int kTooManyRenderPassDrawQuads = 30;
// Assume we are in a video conference if the total video count is bigger than
// or equal to this number.
const int kMaxNumVideos = 5;
void RecordCALayerHistogram(gfx::CALayerResult result) {
UMA_HISTOGRAM_ENUMERATION("Compositing.Renderer.CALayerResult", result);
}
bool FilterOperationSupported(const cc::FilterOperation& operation) {
switch (operation.type()) {
case cc::FilterOperation::GRAYSCALE:
case cc::FilterOperation::SEPIA:
case cc::FilterOperation::SATURATE:
case cc::FilterOperation::HUE_ROTATE:
case cc::FilterOperation::INVERT:
case cc::FilterOperation::BRIGHTNESS:
case cc::FilterOperation::CONTRAST:
case cc::FilterOperation::OPACITY:
case cc::FilterOperation::BLUR:
case cc::FilterOperation::DROP_SHADOW:
return true;
default:
return false;
}
}
gfx::CALayerResult FromRenderPassQuad(
const DisplayResourceProvider* resource_provider,
const AggregatedRenderPassDrawQuad* quad,
const base::flat_map<AggregatedRenderPassId,
raw_ptr<cc::FilterOperations, CtnExperimental>>&
render_pass_filters,
const base::flat_map<AggregatedRenderPassId,
raw_ptr<cc::FilterOperations, CtnExperimental>>&
render_pass_backdrop_filters,
OverlayCandidate* ca_layer_overlay) {
if (render_pass_backdrop_filters.count(quad->render_pass_id)) {
return gfx::kCALayerFailedRenderPassBackdropFilters;
}
auto* shared_quad_state = quad->shared_quad_state;
if (shared_quad_state->sorting_context_id != 0)
return gfx::kCALayerFailedRenderPassSortingContextId;
auto it = render_pass_filters.find(quad->render_pass_id);
if (it != render_pass_filters.end()) {
for (const auto& operation : it->second->operations()) {
bool success = FilterOperationSupported(operation);
if (!success)
return gfx::kCALayerFailedRenderPassFilterOperation;
}
}
// TODO(crbug.com/40769959): support not 2d axis aligned clipping.
if (shared_quad_state->clip_rect &&
!shared_quad_state->quad_to_target_transform.Preserves2dAxisAlignment()) {
return gfx::kCALayerFailedQuadClipping;
}
// TODO(crbug.com/40769959): support not 2d axis aligned mask.
if (!shared_quad_state->mask_filter_info.IsEmpty() &&
!shared_quad_state->quad_to_target_transform.Preserves2dAxisAlignment()) {
return gfx::kCALayerFailedRenderPassPassMask;
}
ca_layer_overlay->rpdq = quad;
ca_layer_overlay->is_render_pass_draw_quad = true;
ca_layer_overlay->uv_rect = gfx::RectF(0, 0, 1, 1);
// For RenderPassDrawQuad, the opacity is applied when its ddl is recorded, so
// the content already is with opacity applied.
ca_layer_overlay->opacity = 1.0;
return gfx::kCALayerSuccess;
}
gfx::CALayerResult FromSolidColorDrawQuad(const SolidColorDrawQuad* quad,
OverlayCandidate* ca_layer_overlay,
bool* skip) {
// Do not generate quads that are completely transparent.
if (quad->color.fA == 0.0f) {
*skip = true;
return gfx::kCALayerSuccess;
}
ca_layer_overlay->color = quad->color;
ca_layer_overlay->is_solid_color = true;
return gfx::kCALayerSuccess;
}
gfx::CALayerResult FromTextureQuad(
const DisplayResourceProvider* resource_provider,
const TextureDrawQuad* quad,
OverlayCandidate* ca_layer_overlay) {
ResourceId resource_id = quad->resource_id;
if (!resource_provider->IsOverlayCandidate(resource_id)) {
return gfx::kCALayerFailedTextureNotCandidate;
}
const bool y_flipped =
resource_provider->GetOrigin(resource_id) == kBottomLeft_GrSurfaceOrigin;
if (y_flipped) {
auto transform = std::get<gfx::Transform>(ca_layer_overlay->transform);
// The anchor point is at the bottom-left corner of the CALayer. The
// transformation that flips the contents of the layer without changing its
// frame is the composition of a vertical flip about the anchor point, and a
// translation by the height of the layer.
transform.Translate(0, ca_layer_overlay->display_rect.height());
transform.Scale(1, -1);
ca_layer_overlay->transform = transform;
}
ca_layer_overlay->resource_id = resource_id;
ca_layer_overlay->uv_rect =
BoundingRect(quad->uv_top_left, quad->uv_bottom_right);
ca_layer_overlay->color = quad->background_color;
ca_layer_overlay->nearest_neighbor_filter = quad->nearest_neighbor;
ca_layer_overlay->hdr_metadata =
resource_provider->GetHDRMetadata(resource_id);
if (quad->is_video_frame)
ca_layer_overlay->protected_video_type = quad->protected_video_type;
return gfx::kCALayerSuccess;
}
gfx::CALayerResult FromTileQuad(
const DisplayResourceProvider* resource_provider,
const TileDrawQuad* quad,
OverlayCandidate* ca_layer_overlay) {
ResourceId resource_id = quad->resource_id;
if (!resource_provider->IsOverlayCandidate(resource_id))
return gfx::kCALayerFailedTileNotCandidate;
ca_layer_overlay->resource_id = resource_id;
ca_layer_overlay->uv_rect = quad->tex_coord_rect;
auto texture_size = resource_provider->GetResourceBackedSize(resource_id);
ca_layer_overlay->uv_rect.InvScale(texture_size.width(),
texture_size.height());
ca_layer_overlay->nearest_neighbor_filter = quad->nearest_neighbor;
return gfx::kCALayerSuccess;
}
class CALayerOverlayProcessorInternal {
public:
gfx::CALayerResult FromDrawQuad(
const DisplayResourceProvider* resource_provider,
const gfx::RectF& display_rect,
const DrawQuad* quad,
const base::flat_map<AggregatedRenderPassId,
raw_ptr<cc::FilterOperations, CtnExperimental>>&
render_pass_filters,
const base::flat_map<AggregatedRenderPassId,
raw_ptr<cc::FilterOperations, CtnExperimental>>&
render_pass_backdrop_filters,
OverlayCandidate* ca_layer_overlay,
bool* skip,
bool* render_pass_draw_quad,
int& yuv_draw_quad_count) {
if (quad->shared_quad_state->blend_mode != SkBlendMode::kSrcOver)
return gfx::kCALayerFailedQuadBlendMode;
// Early-out for invisible quads.
if (quad->shared_quad_state->opacity == 0.f ||
quad->visible_rect.IsEmpty()) {
*skip = true;
return gfx::kCALayerSuccess;
}
// Support rounded corner bounds when they have the same rect as the clip
// rect, and all corners have the same radius. Note that it is entirely
// possible to make rounded corner rects independent of clip rect (by adding
// another CALayer to the tree). Handling non-single border radii is also,
// but requires APIs not supported on all macOS versions.
if (quad->shared_quad_state->mask_filter_info.HasRoundedCorners()) {
if (quad->shared_quad_state->mask_filter_info.rounded_corner_bounds()
.GetType() > gfx::RRectF::Type::kSingle) {
return gfx::kCALayerFailedQuadRoundedCornerNotUniform;
}
}
// Enable edge anti-aliasing only on layer boundaries.
ca_layer_overlay->edge_aa_mask = 0;
if (quad->IsLeftEdge())
ca_layer_overlay->edge_aa_mask |= ui::CALayerEdge::kLayerEdgeLeft;
if (quad->IsRightEdge())
ca_layer_overlay->edge_aa_mask |= ui::CALayerEdge::kLayerEdgeRight;
if (quad->IsBottomEdge())
ca_layer_overlay->edge_aa_mask |= ui::CALayerEdge::kLayerEdgeBottom;
if (quad->IsTopEdge())
ca_layer_overlay->edge_aa_mask |= ui::CALayerEdge::kLayerEdgeTop;
ca_layer_overlay->sorting_context_id =
quad->shared_quad_state->sorting_context_id;
ca_layer_overlay->clip_rect = quad->shared_quad_state->clip_rect;
ca_layer_overlay->rounded_corners =
quad->shared_quad_state->mask_filter_info.rounded_corner_bounds();
ca_layer_overlay->transform =
quad->shared_quad_state->quad_to_target_transform;
ca_layer_overlay->display_rect = gfx::RectF(quad->rect);
ca_layer_overlay->opacity = quad->shared_quad_state->opacity;
*render_pass_draw_quad =
quad->material == DrawQuad::Material::kAggregatedRenderPass;
switch (quad->material) {
case DrawQuad::Material::kTextureContent: {
const TextureDrawQuad* texture_draw_quad =
TextureDrawQuad::MaterialCast(quad);
if (texture_draw_quad->is_video_frame) {
yuv_draw_quad_count += 1;
}
return FromTextureQuad(resource_provider, texture_draw_quad,
ca_layer_overlay);
}
case DrawQuad::Material::kTiledContent:
return FromTileQuad(resource_provider, TileDrawQuad::MaterialCast(quad),
ca_layer_overlay);
case DrawQuad::Material::kSolidColor:
return FromSolidColorDrawQuad(SolidColorDrawQuad::MaterialCast(quad),
ca_layer_overlay, skip);
case DrawQuad::Material::kDebugBorder:
return gfx::kCALayerFailedDebugBoarder;
case DrawQuad::Material::kPictureContent:
return gfx::kCALayerFailedPictureContent;
case DrawQuad::Material::kAggregatedRenderPass:
return FromRenderPassQuad(
resource_provider, AggregatedRenderPassDrawQuad::MaterialCast(quad),
render_pass_filters, render_pass_backdrop_filters,
ca_layer_overlay);
case DrawQuad::Material::kSurfaceContent:
return gfx::kCALayerFailedSurfaceContent;
default:
break;
}
return gfx::kCALayerFailedUnknown;
}
bool video_with_odd_width() { return video_with_odd_width_; }
bool video_with_odd_height() { return video_with_odd_height_; }
bool video_with_odd_x() { return video_with_odd_x_; }
bool video_with_odd_y() { return video_with_odd_y_; }
private:
bool video_with_odd_width_ = false;
bool video_with_odd_height_ = false;
bool video_with_odd_x_ = false;
bool video_with_odd_y_ = false;
};
// Control using the CoreAnimation renderer, which is the path that replaces
// all quads with CALayers.
BASE_FEATURE(kCARenderer,
"CoreAnimationRenderer",
base::FEATURE_ENABLED_BY_DEFAULT);
// Control using the CoreAnimation renderer, which is the path that replaces
// all quads with CALayers.
BASE_FEATURE(kHDRUnderlays,
"CoreAnimationHDRUnderlays",
base::FEATURE_ENABLED_BY_DEFAULT);
} // namespace
CALayerOverlayProcessor::CALayerOverlayProcessor()
: overlays_allowed_(ui::RemoteLayerAPISupported()),
enable_ca_renderer_(base::FeatureList::IsEnabled(kCARenderer)),
enable_hdr_underlays_(base::FeatureList::IsEnabled(kHDRUnderlays)) {
layer_limit_default_ = kLayerLimitDefault;
layer_limit_with_many_videos_ = kLayerLimitWithManyVideos;
if (base::FeatureList::IsEnabled(features::kCALayerNewLimit)) {
layer_limit_default_ = kLayerNewLimitDefault;
const int layer_limit_default_field_trial =
features::kCALayerNewLimitDefault.Get();
if (layer_limit_default_field_trial > 0) {
layer_limit_default_ = layer_limit_default_field_trial;
}
const int layer_limit_with_many_videos_field_trial =
features::kCALayerNewLimitManyVideos.Get();
layer_limit_with_many_videos_ = kLayerNewLimitWithManyVideos;
if (layer_limit_with_many_videos_field_trial > 0) {
layer_limit_with_many_videos_ = layer_limit_with_many_videos_field_trial;
}
}
}
bool CALayerOverlayProcessor::AreClipSettingsValid(
const OverlayCandidate& ca_layer_overlay,
OverlayCandidateList* ca_layer_overlay_list) const {
// It is not possible to correctly represent two different clipping
// settings within one sorting context.
if (!ca_layer_overlay_list->empty()) {
const OverlayCandidate& previous_ca_layer = ca_layer_overlay_list->back();
if (ca_layer_overlay.sorting_context_id &&
previous_ca_layer.sorting_context_id ==
ca_layer_overlay.sorting_context_id) {
if (previous_ca_layer.clip_rect != ca_layer_overlay.clip_rect) {
return false;
}
}
}
return true;
}
void CALayerOverlayProcessor::PutForcedOverlayContentIntoUnderlays(
const DisplayResourceProvider* resource_provider,
AggregatedRenderPass* render_pass,
const gfx::RectF& display_rect,
QuadList* quad_list,
const base::flat_map<AggregatedRenderPassId,
raw_ptr<cc::FilterOperations, CtnExperimental>>&
render_pass_filters,
const base::flat_map<AggregatedRenderPassId,
raw_ptr<cc::FilterOperations, CtnExperimental>>&
render_pass_backdrop_filters,
OverlayCandidateList* ca_layer_overlays) const {
bool failed = false;
for (auto it = quad_list->begin(); it != quad_list->end(); ++it) {
const DrawQuad* quad = *it;
bool force_quad_to_overlay = false;
gfx::ProtectedVideoType protected_video_type =
gfx::ProtectedVideoType::kClear;
if (quad->material == ContentDrawQuadBase::Material::kTextureContent) {
const TextureDrawQuad* texture_quad = TextureDrawQuad::MaterialCast(quad);
// Put hardware protected video into an overlay
if (texture_quad->is_video_frame && texture_quad->protected_video_type !=
gfx::ProtectedVideoType::kClear) {
force_quad_to_overlay = true;
protected_video_type = texture_quad->protected_video_type;
}
// Put HDR videos into an underlay.
if (enable_hdr_underlays_) {
if (resource_provider->GetColorSpace(texture_quad->resource_id)
.IsHDR()) {
force_quad_to_overlay = true;
}
}
}
if (force_quad_to_overlay) {
if (!PutQuadInSeparateOverlay(it, resource_provider, render_pass,
display_rect, quad, render_pass_filters,
render_pass_backdrop_filters,
protected_video_type, ca_layer_overlays)) {
failed = true;
break;
}
}
}
if (failed)
ca_layer_overlays->clear();
}
bool CALayerOverlayProcessor::ProcessForCALayerOverlays(
AggregatedRenderPass* render_pass,
const DisplayResourceProvider* resource_provider,
const gfx::RectF& display_rect,
const base::flat_map<AggregatedRenderPassId,
raw_ptr<cc::FilterOperations, CtnExperimental>>&
render_pass_filters,
const base::flat_map<AggregatedRenderPassId,
raw_ptr<cc::FilterOperations, CtnExperimental>>&
render_pass_backdrop_filters,
OverlayCandidateList* ca_layer_overlays) {
const QuadList& quad_list = render_pass->quad_list;
gfx::CALayerResult result = gfx::kCALayerSuccess;
size_t num_visible_quads = quad_list.size();
// Skip overlay processing
if (!overlays_allowed_ || !enable_ca_renderer_) {
result = gfx::kCALayerFailedOverlayDisabled;
} else if (render_pass->video_capture_enabled) {
// The CARenderer is disabled when video capture is enabled.
// https://crbug.com/836351, https://crbug.com/1290384
result = gfx::kCALayerFailedVideoCaptureEnabled;
} else if (!render_pass->copy_requests.empty()) {
result = gfx::kCALayerFailedCopyRequests;
}
if (result != gfx::kCALayerSuccess) {
RecordCALayerHistogram(result);
SaveCALayerResult(result);
return false;
}
// Start overlay processing
ca_layer_overlays->reserve(num_visible_quads);
int render_pass_draw_quad_count = 0;
int yuv_draw_quad_count = 0;
CALayerOverlayProcessorInternal processor;
for (auto it = quad_list.BackToFrontBegin();
result == gfx::kCALayerSuccess && it != quad_list.BackToFrontEnd();
++it) {
const DrawQuad* quad = *it;
OverlayCandidate ca_layer;
bool skip = false;
bool render_pass_draw_quad = false;
result = processor.FromDrawQuad(
resource_provider, display_rect, quad, render_pass_filters,
render_pass_backdrop_filters, &ca_layer, &skip, &render_pass_draw_quad,
yuv_draw_quad_count);
if (result != gfx::kCALayerSuccess)
break;
if (render_pass_draw_quad) {
++render_pass_draw_quad_count;
if (render_pass_draw_quad_count > kTooManyRenderPassDrawQuads) {
result = gfx::kCALayerFailedTooManyRenderPassDrawQuads;
break;
}
}
if (skip)
continue;
if (!AreClipSettingsValid(ca_layer, ca_layer_overlays)) {
result = gfx::kCALayerFailedDifferentClipSettings;
break;
}
ca_layer_overlays->push_back(ca_layer);
}
// Fails if there are more draw quads than allowed for CoreAnimation.
size_t max_number = (yuv_draw_quad_count < kMaxNumVideos)
? layer_limit_default_
: layer_limit_with_many_videos_;
if (num_visible_quads > max_number) {
result = gfx::kCALayerFailedTooManyQuads;
}
RecordCALayerHistogram(result);
SaveCALayerResult(result);
if (result != gfx::kCALayerSuccess) {
ca_layer_overlays->clear();
return false;
}
return true;
}
bool CALayerOverlayProcessor::PutQuadInSeparateOverlay(
QuadList::Iterator at,
const DisplayResourceProvider* resource_provider,
AggregatedRenderPass* render_pass,
const gfx::RectF& display_rect,
const DrawQuad* quad,
const base::flat_map<AggregatedRenderPassId,
raw_ptr<cc::FilterOperations, CtnExperimental>>&
render_pass_filters,
const base::flat_map<AggregatedRenderPassId,
raw_ptr<cc::FilterOperations, CtnExperimental>>&
render_pass_backdrop_filters,
gfx::ProtectedVideoType protected_video_type,
OverlayCandidateList* ca_layer_overlays) const {
CALayerOverlayProcessorInternal processor;
OverlayCandidate ca_layer;
bool skip = false;
bool render_pass_draw_quad = false;
int yuv_draw_quad_count = 0;
gfx::CALayerResult result = processor.FromDrawQuad(
resource_provider, display_rect, quad, render_pass_filters,
render_pass_backdrop_filters, &ca_layer, &skip, &render_pass_draw_quad,
yuv_draw_quad_count);
if (result != gfx::kCALayerSuccess)
return false;
if (skip)
return true;
if (!AreClipSettingsValid(ca_layer, ca_layer_overlays))
return true;
ca_layer.protected_video_type = protected_video_type;
render_pass->ReplaceExistingQuadWithHolePunch(at);
ca_layer_overlays->push_back(ca_layer);
return true;
}
// Expand this function to save the results of the last N frames.
void CALayerOverlayProcessor::SaveCALayerResult(gfx::CALayerResult result) {
ca_layer_result_ = result;
}
} // namespace viz
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