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Unified Diff: cc/resources/texture_uploader.cc

Issue 1535833002: Delete CC. (Closed) Base URL: git@github.com:domokit/mojo.git@moz-5
Patch Set: rebase Created 4 years, 11 months ago
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Index: cc/resources/texture_uploader.cc
diff --git a/cc/resources/texture_uploader.cc b/cc/resources/texture_uploader.cc
deleted file mode 100644
index 601fa8fbff89de41c26075cf1be5d97dff61fdd3..0000000000000000000000000000000000000000
--- a/cc/resources/texture_uploader.cc
+++ /dev/null
@@ -1,315 +0,0 @@
-// Copyright 2014 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/resources/texture_uploader.h"
-
-#include <algorithm>
-#include <vector>
-
-#include "base/metrics/histogram.h"
-#include "base/trace_event/trace_event.h"
-#include "cc/base/util.h"
-#include "cc/resources/resource.h"
-#include "gpu/GLES2/gl2extchromium.h"
-#include "gpu/command_buffer/client/gles2_interface.h"
-#include "third_party/khronos/GLES2/gl2.h"
-#include "third_party/khronos/GLES2/gl2ext.h"
-#include "ui/gfx/geometry/rect.h"
-#include "ui/gfx/geometry/vector2d.h"
-
-using gpu::gles2::GLES2Interface;
-
-namespace {
-
-// How many previous uploads to use when predicting future throughput.
-static const size_t kUploadHistorySizeMax = 1000;
-static const size_t kUploadHistorySizeInitial = 100;
-
-// Global estimated number of textures per second to maintain estimates across
-// subsequent instances of TextureUploader.
-// More than one thread will not access this variable, so we do not need to
-// synchronize access.
-static const double kDefaultEstimatedTexturesPerSecond = 48.0 * 60.0;
-
-// Flush interval when performing texture uploads.
-static const size_t kTextureUploadFlushPeriod = 4;
-
-} // anonymous namespace
-
-namespace cc {
-
-TextureUploader::Query::Query(GLES2Interface* gl)
- : gl_(gl),
- query_id_(0),
- value_(0),
- has_value_(false),
- is_non_blocking_(false) {
- gl_->GenQueriesEXT(1, &query_id_);
-}
-
-TextureUploader::Query::~Query() { gl_->DeleteQueriesEXT(1, &query_id_); }
-
-void TextureUploader::Query::Begin() {
- has_value_ = false;
- is_non_blocking_ = false;
- gl_->BeginQueryEXT(GL_COMMANDS_ISSUED_CHROMIUM, query_id_);
-}
-
-void TextureUploader::Query::End() {
- gl_->EndQueryEXT(GL_COMMANDS_ISSUED_CHROMIUM);
-}
-
-bool TextureUploader::Query::IsPending() {
- unsigned available = 1;
- gl_->GetQueryObjectuivEXT(
- query_id_, GL_QUERY_RESULT_AVAILABLE_EXT, &available);
- return !available;
-}
-
-unsigned TextureUploader::Query::Value() {
- if (!has_value_) {
- gl_->GetQueryObjectuivEXT(query_id_, GL_QUERY_RESULT_EXT, &value_);
- has_value_ = true;
- }
- return value_;
-}
-
-TextureUploader::TextureUploader(GLES2Interface* gl)
- : gl_(gl),
- num_blocking_texture_uploads_(0),
- sub_image_size_(0),
- num_texture_uploads_since_last_flush_(0) {
- for (size_t i = kUploadHistorySizeInitial; i > 0; i--)
- textures_per_second_history_.insert(kDefaultEstimatedTexturesPerSecond);
-}
-
-TextureUploader::~TextureUploader() {}
-
-size_t TextureUploader::NumBlockingUploads() {
- ProcessQueries();
- return num_blocking_texture_uploads_;
-}
-
-void TextureUploader::MarkPendingUploadsAsNonBlocking() {
- for (ScopedPtrDeque<Query>::iterator it = pending_queries_.begin();
- it != pending_queries_.end();
- ++it) {
- if ((*it)->is_non_blocking())
- continue;
-
- num_blocking_texture_uploads_--;
- (*it)->mark_as_non_blocking();
- }
-
- DCHECK(!num_blocking_texture_uploads_);
-}
-
-double TextureUploader::EstimatedTexturesPerSecond() {
- ProcessQueries();
-
- // Use the median as our estimate.
- std::multiset<double>::iterator median = textures_per_second_history_.begin();
- std::advance(median, textures_per_second_history_.size() / 2);
- return *median;
-}
-
-void TextureUploader::BeginQuery() {
- // Check to see if any of the pending queries are free before allocating a
- // new one. If this is not done, queries may be allocated without bound.
- // http://crbug.com/398072
- if (available_queries_.empty())
- ProcessQueries();
-
- if (available_queries_.empty())
- available_queries_.push_back(Query::Create(gl_));
-
- available_queries_.front()->Begin();
-}
-
-void TextureUploader::EndQuery() {
- available_queries_.front()->End();
- pending_queries_.push_back(available_queries_.take_front());
- num_blocking_texture_uploads_++;
-}
-
-void TextureUploader::Upload(const uint8* image,
- const gfx::Rect& image_rect,
- const gfx::Rect& source_rect,
- gfx::Vector2d dest_offset,
- ResourceFormat format,
- const gfx::Size& size) {
- CHECK(image_rect.Contains(source_rect));
-
- bool is_full_upload = dest_offset.IsZero() && source_rect.size() == size;
-
- if (is_full_upload)
- BeginQuery();
-
- UploadWithMapTexSubImage(image, image_rect, source_rect, dest_offset, format);
-
- if (is_full_upload)
- EndQuery();
-
- num_texture_uploads_since_last_flush_++;
- if (num_texture_uploads_since_last_flush_ >= kTextureUploadFlushPeriod)
- Flush();
-}
-
-void TextureUploader::Flush() {
- if (!num_texture_uploads_since_last_flush_)
- return;
-
- gl_->ShallowFlushCHROMIUM();
-
- num_texture_uploads_since_last_flush_ = 0;
-}
-
-void TextureUploader::ReleaseCachedQueries() {
- ProcessQueries();
- available_queries_.clear();
-}
-
-void TextureUploader::UploadWithTexSubImage(const uint8* image,
- const gfx::Rect& image_rect,
- const gfx::Rect& source_rect,
- gfx::Vector2d dest_offset,
- ResourceFormat format) {
- TRACE_EVENT0("cc", "TextureUploader::UploadWithTexSubImage");
-
- // Early-out if this is a no-op, and assert that |image| be valid if this is
- // not a no-op.
- if (source_rect.IsEmpty())
- return;
- DCHECK(image);
-
- // Offset from image-rect to source-rect.
- gfx::Vector2d offset(source_rect.origin() - image_rect.origin());
-
- const uint8* pixel_source;
- unsigned bytes_per_pixel = BitsPerPixel(format) / 8;
- // Use 4-byte row alignment (OpenGL default) for upload performance.
- // Assuming that GL_UNPACK_ALIGNMENT has not changed from default.
- unsigned upload_image_stride =
- RoundUp(bytes_per_pixel * source_rect.width(), 4u);
-
- if (upload_image_stride == image_rect.width() * bytes_per_pixel &&
- !offset.x()) {
- pixel_source = &image[image_rect.width() * bytes_per_pixel * offset.y()];
- } else {
- size_t needed_size = upload_image_stride * source_rect.height();
- if (sub_image_size_ < needed_size) {
- sub_image_.reset(new uint8[needed_size]);
- sub_image_size_ = needed_size;
- }
- // Strides not equal, so do a row-by-row memcpy from the
- // paint results into a temp buffer for uploading.
- for (int row = 0; row < source_rect.height(); ++row)
- memcpy(&sub_image_[upload_image_stride * row],
- &image[bytes_per_pixel *
- (offset.x() + (offset.y() + row) * image_rect.width())],
- source_rect.width() * bytes_per_pixel);
-
- pixel_source = &sub_image_[0];
- }
-
- gl_->TexSubImage2D(GL_TEXTURE_2D,
- 0,
- dest_offset.x(),
- dest_offset.y(),
- source_rect.width(),
- source_rect.height(),
- GLDataFormat(format),
- GLDataType(format),
- pixel_source);
-}
-
-void TextureUploader::UploadWithMapTexSubImage(const uint8* image,
- const gfx::Rect& image_rect,
- const gfx::Rect& source_rect,
- gfx::Vector2d dest_offset,
- ResourceFormat format) {
- TRACE_EVENT0("cc", "TextureUploader::UploadWithMapTexSubImage");
-
- // Early-out if this is a no-op, and assert that |image| be valid if this is
- // not a no-op.
- if (source_rect.IsEmpty())
- return;
- DCHECK(image);
- // Compressed textures have no implementation of mapTexSubImage.
- DCHECK_NE(ETC1, format);
-
- // Offset from image-rect to source-rect.
- gfx::Vector2d offset(source_rect.origin() - image_rect.origin());
-
- unsigned bytes_per_pixel = BitsPerPixel(format) / 8;
- // Use 4-byte row alignment (OpenGL default) for upload performance.
- // Assuming that GL_UNPACK_ALIGNMENT has not changed from default.
- unsigned upload_image_stride =
- RoundUp(bytes_per_pixel * source_rect.width(), 4u);
-
- // Upload tile data via a mapped transfer buffer
- uint8* pixel_dest =
- static_cast<uint8*>(gl_->MapTexSubImage2DCHROMIUM(GL_TEXTURE_2D,
- 0,
- dest_offset.x(),
- dest_offset.y(),
- source_rect.width(),
- source_rect.height(),
- GLDataFormat(format),
- GLDataType(format),
- GL_WRITE_ONLY));
-
- if (!pixel_dest) {
- UploadWithTexSubImage(image, image_rect, source_rect, dest_offset, format);
- return;
- }
-
- if (upload_image_stride == image_rect.width() * bytes_per_pixel &&
- !offset.x()) {
- memcpy(pixel_dest,
- &image[image_rect.width() * bytes_per_pixel * offset.y()],
- source_rect.height() * image_rect.width() * bytes_per_pixel);
- } else {
- // Strides not equal, so do a row-by-row memcpy from the
- // paint results into the pixel_dest.
- for (int row = 0; row < source_rect.height(); ++row) {
- memcpy(&pixel_dest[upload_image_stride * row],
- &image[bytes_per_pixel *
- (offset.x() + (offset.y() + row) * image_rect.width())],
- source_rect.width() * bytes_per_pixel);
- }
- }
-
- gl_->UnmapTexSubImage2DCHROMIUM(pixel_dest);
-}
-
-void TextureUploader::ProcessQueries() {
- while (!pending_queries_.empty()) {
- if (pending_queries_.front()->IsPending())
- break;
-
- unsigned us_elapsed = pending_queries_.front()->Value();
- UMA_HISTOGRAM_CUSTOM_COUNTS(
- "Renderer4.TextureGpuUploadTimeUS", us_elapsed, 0, 100000, 50);
-
- // Clamp the queries to saner values in case the queries fail.
- us_elapsed = std::max(1u, us_elapsed);
- us_elapsed = std::min(15000u, us_elapsed);
-
- if (!pending_queries_.front()->is_non_blocking())
- num_blocking_texture_uploads_--;
-
- // Remove the min and max value from our history and insert the new one.
- double textures_per_second = 1.0 / (us_elapsed * 1e-6);
- if (textures_per_second_history_.size() >= kUploadHistorySizeMax) {
- textures_per_second_history_.erase(textures_per_second_history_.begin());
- textures_per_second_history_.erase(--textures_per_second_history_.end());
- }
- textures_per_second_history_.insert(textures_per_second);
-
- available_queries_.push_back(pending_queries_.take_front());
- }
-}
-
-} // namespace cc
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