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raster_buffer_provider.cc
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raster_buffer_provider.cc
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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "cc/raster/raster_buffer_provider.h"
#include <stddef.h>
#include "base/trace_event/trace_event.h"
#include "cc/raster/raster_source.h"
#include "components/viz/common/resources/platform_color.h"
#include "components/viz/common/resources/resource_format_utils.h"
#include "third_party/skia/include/core/SkCanvas.h"
#include "third_party/skia/include/core/SkMath.h"
#include "third_party/skia/include/core/SkSurface.h"
#include "ui/gfx/geometry/axis_transform2d.h"
namespace cc {
RasterBufferProvider::RasterBufferProvider() = default;
RasterBufferProvider::~RasterBufferProvider() = default;
namespace {
bool IsSupportedPlaybackToMemoryFormat(viz::ResourceFormat format) {
switch (format) {
case viz::RGBA_4444:
case viz::RGBA_8888:
case viz::BGRA_8888:
return true;
case viz::ALPHA_8:
case viz::LUMINANCE_8:
case viz::RGB_565:
case viz::ETC1:
case viz::RED_8:
case viz::LUMINANCE_F16:
case viz::RGBA_F16:
case viz::R16_EXT:
case viz::BGR_565:
case viz::RG_88:
case viz::RGBX_8888:
case viz::BGRX_8888:
case viz::RGBA_1010102:
case viz::BGRA_1010102:
case viz::YVU_420:
case viz::YUV_420_BIPLANAR:
case viz::P010:
return false;
}
NOTREACHED();
return false;
}
} // anonymous namespace
// static
void RasterBufferProvider::PlaybackToMemory(
void* memory,
viz::ResourceFormat format,
const gfx::Size& size,
size_t stride,
const RasterSource* raster_source,
const gfx::Rect& canvas_bitmap_rect,
const gfx::Rect& canvas_playback_rect,
const gfx::AxisTransform2d& transform,
const gfx::ColorSpace& target_color_space,
bool gpu_compositing,
const RasterSource::PlaybackSettings& playback_settings) {
TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("cc.debug"),
"RasterBufferProvider::PlaybackToMemory");
DCHECK(IsSupportedPlaybackToMemoryFormat(format)) << format;
SkColorType color_type =
ResourceFormatToClosestSkColorType(gpu_compositing, format);
// Uses kPremul_SkAlphaType since the result is not known to be opaque.
SkImageInfo info = SkImageInfo::Make(size.width(), size.height(), color_type,
kPremul_SkAlphaType,
target_color_space.ToSkColorSpace());
// Use unknown pixel geometry to disable LCD text.
SkSurfaceProps surface_props(0, kUnknown_SkPixelGeometry);
if (playback_settings.use_lcd_text) {
// LegacyFontHost will get LCD text and skia figures out what type to use.
surface_props = SkSurfaceProps(SkSurfaceProps::kLegacyFontHost_InitType);
}
if (!stride)
stride = info.minRowBytes();
DCHECK_GT(stride, 0u);
gfx::Size content_size = raster_source->GetContentSize(transform.scale());
switch (format) {
case viz::RGBA_8888:
case viz::BGRA_8888:
case viz::RGBA_F16: {
sk_sp<SkSurface> surface =
SkSurface::MakeRasterDirect(info, memory, stride, &surface_props);
// There are some rare crashes where this doesn't succeed and may be
// indicative of memory stomps elsewhere. Instead of displaying
// invalid content, just crash the renderer and try again.
// See: http://crbug.com/721744.
CHECK(surface);
raster_source->PlaybackToCanvas(surface->getCanvas(), content_size,
canvas_bitmap_rect, canvas_playback_rect,
transform, playback_settings);
return;
}
case viz::RGBA_4444: {
sk_sp<SkSurface> surface = SkSurface::MakeRaster(info, &surface_props);
// TODO(reveman): Improve partial raster support by reducing the size of
// playback rect passed to PlaybackToCanvas. crbug.com/519070
raster_source->PlaybackToCanvas(surface->getCanvas(), content_size,
canvas_bitmap_rect, canvas_bitmap_rect,
transform, playback_settings);
TRACE_EVENT0("cc",
"RasterBufferProvider::PlaybackToMemory::ConvertRGBA4444");
SkImageInfo dst_info = info.makeColorType(
ResourceFormatToClosestSkColorType(gpu_compositing, format));
auto dst_canvas = SkCanvas::MakeRasterDirect(dst_info, memory, stride);
DCHECK(dst_canvas);
SkPaint paint;
paint.setDither(true);
paint.setBlendMode(SkBlendMode::kSrc);
surface->draw(dst_canvas.get(), 0, 0, &paint);
return;
}
case viz::ETC1:
case viz::ALPHA_8:
case viz::LUMINANCE_8:
case viz::RGB_565:
case viz::RED_8:
case viz::LUMINANCE_F16:
case viz::R16_EXT:
case viz::BGR_565:
case viz::RG_88:
case viz::RGBX_8888:
case viz::BGRX_8888:
case viz::RGBA_1010102:
case viz::BGRA_1010102:
case viz::YVU_420:
case viz::YUV_420_BIPLANAR:
case viz::P010:
NOTREACHED();
return;
}
NOTREACHED();
}
} // namespace cc