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// Copyright 2012 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.
#ifndef CC_SCHEDULER_TEXTURE_UPLOADER_H_
#define CC_SCHEDULER_TEXTURE_UPLOADER_H_
#include <set>
#include "base/basictypes.h"
#include "base/memory/scoped_ptr.h"
#include "cc/base/cc_export.h"
#include "cc/base/scoped_ptr_deque.h"
#include "third_party/khronos/GLES2/gl2.h"
namespace WebKit { class WebGraphicsContext3D; }
namespace gfx {
class Rect;
class Size;
class Vector2d;
}
namespace cc {
class CC_EXPORT TextureUploader {
public:
static scoped_ptr<TextureUploader> Create(
WebKit::WebGraphicsContext3D* context,
bool use_map_tex_sub_image,
bool use_shallow_flush) {
return make_scoped_ptr(
new TextureUploader(context, use_map_tex_sub_image, use_shallow_flush));
}
~TextureUploader();
size_t NumBlockingUploads();
void MarkPendingUploadsAsNonBlocking();
double EstimatedTexturesPerSecond();
// Let content_rect be a rectangle, and let content_rect be a sub-rectangle of
// content_rect, expressed in the same coordinate system as content_rect. Let
// image be a buffer for content_rect. This function will copy the region
// corresponding to source_rect to dest_offset in this sub-image.
void Upload(const uint8* image,
gfx::Rect content_rect,
gfx::Rect source_rect,
gfx::Vector2d dest_offset,
GLenum format,
gfx::Size size);
void Flush();
void ReleaseCachedQueries();
private:
class Query {
public:
static scoped_ptr<Query> Create(WebKit::WebGraphicsContext3D* context) {
return make_scoped_ptr(new Query(context));
}
virtual ~Query();
void Begin();
void End();
bool IsPending();
unsigned Value();
size_t TexturesUploaded();
void mark_as_non_blocking() {
is_non_blocking_ = true;
}
bool is_non_blocking() const {
return is_non_blocking_;
}
private:
explicit Query(WebKit::WebGraphicsContext3D* context);
WebKit::WebGraphicsContext3D* context_;
unsigned query_id_;
unsigned value_;
bool has_value_;
bool is_non_blocking_;
DISALLOW_COPY_AND_ASSIGN(Query);
};
TextureUploader(WebKit::WebGraphicsContext3D* context,
bool use_map_tex_sub_image,
bool use_shallow_flush);
void BeginQuery();
void EndQuery();
void ProcessQueries();
void UploadWithTexSubImage(const uint8* image,
gfx::Rect image_rect,
gfx::Rect source_rect,
gfx::Vector2d dest_offset,
GLenum format);
void UploadWithMapTexSubImage(const uint8* image,
gfx::Rect image_rect,
gfx::Rect source_rect,
gfx::Vector2d dest_offset,
GLenum format);
WebKit::WebGraphicsContext3D* context_;
ScopedPtrDeque<Query> pending_queries_;
ScopedPtrDeque<Query> available_queries_;
std::multiset<double> textures_per_second_history_;
size_t num_blocking_texture_uploads_;
bool use_map_tex_sub_image_;
size_t sub_image_size_;
scoped_ptr<uint8[]> sub_image_;
bool use_shallow_flush_;
size_t num_texture_uploads_since_last_flush_;
DISALLOW_COPY_AND_ASSIGN(TextureUploader);
};
} // namespace cc
#endif // CC_SCHEDULER_TEXTURE_UPLOADER_H_
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