| // Copyright 2011 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/layers/texture_layer_impl.h" |
| |
| #include <vector> |
| |
| #include "base/strings/stringprintf.h" |
| #include "cc/layers/quad_sink.h" |
| #include "cc/output/renderer.h" |
| #include "cc/quads/texture_draw_quad.h" |
| #include "cc/resources/platform_color.h" |
| #include "cc/resources/scoped_resource.h" |
| #include "cc/resources/single_release_callback.h" |
| #include "cc/trees/layer_tree_impl.h" |
| |
| namespace cc { |
| |
| TextureLayerImpl::TextureLayerImpl(LayerTreeImpl* tree_impl, |
| int id, |
| bool uses_mailbox) |
| : LayerImpl(tree_impl, id), |
| texture_id_(0), |
| external_texture_resource_(0), |
| premultiplied_alpha_(true), |
| blend_background_color_(false), |
| flipped_(true), |
| uv_top_left_(0.f, 0.f), |
| uv_bottom_right_(1.f, 1.f), |
| uses_mailbox_(uses_mailbox), |
| own_mailbox_(false), |
| valid_texture_copy_(false) { |
| vertex_opacity_[0] = 1.0f; |
| vertex_opacity_[1] = 1.0f; |
| vertex_opacity_[2] = 1.0f; |
| vertex_opacity_[3] = 1.0f; |
| } |
| |
| TextureLayerImpl::~TextureLayerImpl() { FreeTextureMailbox(); } |
| |
| void TextureLayerImpl::SetTextureMailbox( |
| const TextureMailbox& mailbox, |
| scoped_ptr<SingleReleaseCallback> release_callback) { |
| DCHECK(uses_mailbox_); |
| DCHECK_EQ(mailbox.IsValid(), !!release_callback); |
| FreeTextureMailbox(); |
| texture_mailbox_ = mailbox; |
| release_callback_ = release_callback.Pass(); |
| own_mailbox_ = true; |
| valid_texture_copy_ = false; |
| } |
| |
| scoped_ptr<LayerImpl> TextureLayerImpl::CreateLayerImpl( |
| LayerTreeImpl* tree_impl) { |
| return TextureLayerImpl::Create(tree_impl, id(), uses_mailbox_). |
| PassAs<LayerImpl>(); |
| } |
| |
| void TextureLayerImpl::PushPropertiesTo(LayerImpl* layer) { |
| LayerImpl::PushPropertiesTo(layer); |
| |
| TextureLayerImpl* texture_layer = static_cast<TextureLayerImpl*>(layer); |
| texture_layer->set_flipped(flipped_); |
| texture_layer->set_uv_top_left(uv_top_left_); |
| texture_layer->set_uv_bottom_right(uv_bottom_right_); |
| texture_layer->set_vertex_opacity(vertex_opacity_); |
| texture_layer->set_premultiplied_alpha(premultiplied_alpha_); |
| texture_layer->set_blend_background_color(blend_background_color_); |
| if (uses_mailbox_ && own_mailbox_) { |
| texture_layer->SetTextureMailbox(texture_mailbox_, |
| release_callback_.Pass()); |
| own_mailbox_ = false; |
| } else { |
| texture_layer->set_texture_id(texture_id_); |
| } |
| } |
| |
| bool TextureLayerImpl::WillDraw(DrawMode draw_mode, |
| ResourceProvider* resource_provider) { |
| if (draw_mode == DRAW_MODE_RESOURCELESS_SOFTWARE) |
| return false; |
| |
| if (uses_mailbox_) { |
| if (own_mailbox_) { |
| DCHECK(!external_texture_resource_); |
| if ((draw_mode == DRAW_MODE_HARDWARE && texture_mailbox_.IsTexture()) || |
| (draw_mode == DRAW_MODE_SOFTWARE && |
| texture_mailbox_.IsSharedMemory())) { |
| external_texture_resource_ = |
| resource_provider->CreateResourceFromTextureMailbox( |
| texture_mailbox_, |
| release_callback_.Pass()); |
| DCHECK(external_texture_resource_); |
| texture_copy_.reset(); |
| valid_texture_copy_ = false; |
| } |
| if (external_texture_resource_) |
| own_mailbox_ = false; |
| } |
| |
| if (!valid_texture_copy_ && draw_mode == DRAW_MODE_HARDWARE && |
| texture_mailbox_.IsSharedMemory()) { |
| DCHECK(!external_texture_resource_); |
| // Have to upload a copy to a texture for it to be used in a |
| // hardware draw. |
| if (!texture_copy_) |
| texture_copy_ = ScopedResource::Create(resource_provider); |
| if (texture_copy_->size() != texture_mailbox_.shared_memory_size() || |
| resource_provider->InUseByConsumer(texture_copy_->id())) |
| texture_copy_->Free(); |
| |
| if (!texture_copy_->id()) { |
| texture_copy_->Allocate(texture_mailbox_.shared_memory_size(), |
| ResourceProvider::TextureUsageAny, |
| resource_provider->best_texture_format()); |
| } |
| |
| if (texture_copy_->id()) { |
| std::vector<uint8> swizzled; |
| uint8* pixels = |
| static_cast<uint8*>(texture_mailbox_.shared_memory()->memory()); |
| |
| if (!PlatformColor::SameComponentOrder(texture_copy_->format())) { |
| // Swizzle colors. This is slow, but should be really uncommon. |
| swizzled.resize(texture_mailbox_.shared_memory_size_in_bytes()); |
| for (size_t i = 0; i < texture_mailbox_.shared_memory_size_in_bytes(); |
| i += 4) { |
| swizzled[i] = pixels[i + 2]; |
| swizzled[i + 1] = pixels[i + 1]; |
| swizzled[i + 2] = pixels[i]; |
| swizzled[i + 3] = pixels[i + 3]; |
| } |
| pixels = &swizzled[0]; |
| } |
| |
| resource_provider->SetPixels( |
| texture_copy_->id(), |
| pixels, |
| gfx::Rect(texture_mailbox_.shared_memory_size()), |
| gfx::Rect(texture_mailbox_.shared_memory_size()), |
| gfx::Vector2d()); |
| |
| valid_texture_copy_ = true; |
| } |
| } |
| } else if (texture_id_) { |
| DCHECK(!external_texture_resource_); |
| if (draw_mode == DRAW_MODE_HARDWARE) { |
| external_texture_resource_ = |
| resource_provider->CreateResourceFromExternalTexture( |
| GL_TEXTURE_2D, |
| texture_id_); |
| } |
| } |
| return (external_texture_resource_ || valid_texture_copy_) && |
| LayerImpl::WillDraw(draw_mode, resource_provider); |
| } |
| |
| void TextureLayerImpl::AppendQuads(QuadSink* quad_sink, |
| AppendQuadsData* append_quads_data) { |
| DCHECK(external_texture_resource_ || valid_texture_copy_); |
| |
| SharedQuadState* shared_quad_state = |
| quad_sink->UseSharedQuadState(CreateSharedQuadState()); |
| AppendDebugBorderQuad(quad_sink, shared_quad_state, append_quads_data); |
| |
| SkColor bg_color = blend_background_color_ ? |
| background_color() : SK_ColorTRANSPARENT; |
| bool opaque = contents_opaque() || (SkColorGetA(bg_color) == 0xFF); |
| |
| gfx::Rect quad_rect(content_bounds()); |
| gfx::Rect opaque_rect = opaque ? quad_rect : gfx::Rect(); |
| scoped_ptr<TextureDrawQuad> quad = TextureDrawQuad::Create(); |
| ResourceProvider::ResourceId id = |
| valid_texture_copy_ ? texture_copy_->id() : external_texture_resource_; |
| quad->SetNew(shared_quad_state, |
| quad_rect, |
| opaque_rect, |
| id, |
| premultiplied_alpha_, |
| uv_top_left_, |
| uv_bottom_right_, |
| bg_color, |
| vertex_opacity_, |
| flipped_); |
| quad_sink->Append(quad.PassAs<DrawQuad>(), append_quads_data); |
| } |
| |
| void TextureLayerImpl::DidDraw(ResourceProvider* resource_provider) { |
| LayerImpl::DidDraw(resource_provider); |
| if (uses_mailbox_ || !external_texture_resource_) |
| return; |
| // TODO(danakj): the following assert will not be true when sending resources |
| // to a parent compositor. A synchronization scheme (double-buffering or |
| // pipelining of updates) for the client will need to exist to solve this. |
| DCHECK(!resource_provider->InUseByConsumer(external_texture_resource_)); |
| resource_provider->DeleteResource(external_texture_resource_); |
| external_texture_resource_ = 0; |
| } |
| |
| Region TextureLayerImpl::VisibleContentOpaqueRegion() const { |
| if (contents_opaque()) |
| return visible_content_rect(); |
| |
| if (blend_background_color_ && (SkColorGetA(background_color()) == 0xFF)) |
| return visible_content_rect(); |
| |
| return Region(); |
| } |
| |
| void TextureLayerImpl::DidLoseOutputSurface() { |
| if (external_texture_resource_ && !uses_mailbox_) { |
| ResourceProvider* resource_provider = |
| layer_tree_impl()->resource_provider(); |
| resource_provider->DeleteResource(external_texture_resource_); |
| } |
| texture_copy_.reset(); |
| texture_id_ = 0; |
| external_texture_resource_ = 0; |
| valid_texture_copy_ = false; |
| } |
| |
| const char* TextureLayerImpl::LayerTypeAsString() const { |
| return "cc::TextureLayerImpl"; |
| } |
| |
| void TextureLayerImpl::FreeTextureMailbox() { |
| if (!uses_mailbox_) |
| return; |
| if (own_mailbox_) { |
| DCHECK(!external_texture_resource_); |
| if (release_callback_) |
| release_callback_->Run(texture_mailbox_.sync_point(), false); |
| texture_mailbox_ = TextureMailbox(); |
| release_callback_.reset(); |
| } else if (external_texture_resource_) { |
| DCHECK(!own_mailbox_); |
| ResourceProvider* resource_provider = |
| layer_tree_impl()->resource_provider(); |
| resource_provider->DeleteResource(external_texture_resource_); |
| external_texture_resource_ = 0; |
| } |
| } |
| |
| } // namespace cc |