| // Copyright 2013 The Flutter 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 "impeller/renderer/render_pass.h" |
| |
| namespace impeller { |
| |
| RenderPass::RenderPass(std::weak_ptr<const Context> context, |
| const RenderTarget& target) |
| : context_(std::move(context)), |
| render_target_(target), |
| transients_buffer_(HostBuffer::Create()) {} |
| |
| RenderPass::~RenderPass() = default; |
| |
| const RenderTarget& RenderPass::GetRenderTarget() const { |
| return render_target_; |
| } |
| |
| ISize RenderPass::GetRenderTargetSize() const { |
| return render_target_.GetRenderTargetSize(); |
| } |
| |
| HostBuffer& RenderPass::GetTransientsBuffer() { |
| return *transients_buffer_; |
| } |
| |
| void RenderPass::SetLabel(std::string label) { |
| if (label.empty()) { |
| return; |
| } |
| transients_buffer_->SetLabel(SPrintF("%s Transients", label.c_str())); |
| OnSetLabel(std::move(label)); |
| } |
| |
| bool RenderPass::AddCommand(Command command) { |
| if (!command) { |
| VALIDATION_LOG << "Attempted to add an invalid command to the render pass."; |
| return false; |
| } |
| |
| if (command.scissor.has_value()) { |
| auto target_rect = IRect({}, render_target_.GetRenderTargetSize()); |
| if (!target_rect.Contains(command.scissor.value())) { |
| VALIDATION_LOG << "Cannot apply a scissor that lies outside the bounds " |
| "of the render target."; |
| return false; |
| } |
| } |
| |
| if (command.index_count == 0u) { |
| // Essentially a no-op. Don't record the command but this is not necessary |
| // an error either. |
| return true; |
| } |
| |
| if (command.instance_count == 0u) { |
| // Essentially a no-op. Don't record the command but this is not necessary |
| // an error either. |
| return true; |
| } |
| |
| commands_.emplace_back(std::move(command)); |
| return true; |
| } |
| |
| bool RenderPass::EncodeCommands() const { |
| auto context = context_.lock(); |
| // The context could have been collected in the meantime. |
| if (!context) { |
| return false; |
| } |
| return OnEncodeCommands(*context); |
| } |
| |
| } // namespace impeller |