| // Copyright 2017 The Fuchsia 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 "garnet/lib/ui/scenic/resources/gpu_image.h" |
| |
| #include "garnet/lib/ui/scenic/engine/session.h" |
| #include "garnet/lib/ui/scenic/resources/gpu_memory.h" |
| #include "garnet/lib/ui/scenic/resources/host_memory.h" |
| #include "lib/escher/util/image_utils.h" |
| |
| namespace scene_manager { |
| |
| const ResourceTypeInfo GpuImage::kTypeInfo = { |
| ResourceType::kGpuImage | ResourceType::kImage | ResourceType::kImageBase, |
| "GpuImage"}; |
| |
| GpuImage::GpuImage(Session* session, |
| scenic::ResourceId id, |
| GpuMemoryPtr memory, |
| uint64_t memory_offset, |
| escher::ImageInfo image_info, |
| vk::Image vk_image) |
| : Image(session, id, GpuImage::kTypeInfo), memory_(std::move(memory)) { |
| image_ = escher::Image::New(session->engine()->escher_resource_recycler(), |
| image_info, vk_image, memory_->escher_gpu_mem(), |
| memory_offset); |
| FXL_CHECK(image_); |
| } |
| |
| GpuImagePtr GpuImage::New(Session* session, |
| scenic::ResourceId id, |
| GpuMemoryPtr memory, |
| const scenic::ImageInfoPtr& image_info, |
| uint64_t memory_offset, |
| mz::ErrorReporter* error_reporter) { |
| vk::Format pixel_format = vk::Format::eUndefined; |
| size_t bytes_per_pixel; |
| size_t pixel_alignment; |
| switch (image_info->pixel_format) { |
| case scenic::ImageInfo::PixelFormat::BGRA_8: |
| pixel_format = vk::Format::eB8G8R8A8Unorm; |
| bytes_per_pixel = 4u; |
| pixel_alignment = 4u; |
| break; |
| case scenic::ImageInfo::PixelFormat::YUY2: |
| error_reporter->ERROR() |
| << "GpuImage::CreateFromMemory(): PixelFormat must be BGRA_8."; |
| return nullptr; |
| } |
| |
| if (image_info->width <= 0) { |
| error_reporter->ERROR() |
| << "GpuImage::CreateFromMemory(): width must be greater than 0."; |
| return nullptr; |
| } |
| if (image_info->height <= 0) { |
| error_reporter->ERROR() |
| << "GpuImage::CreateFromMemory(): height must be greater than 0."; |
| return nullptr; |
| } |
| |
| auto& caps = session->engine()->escher()->device()->caps(); |
| if (image_info->width > caps.max_image_width) { |
| error_reporter->ERROR() |
| << "GpuImage::CreateFromMemory(): image width exceeds maximum (" |
| << image_info->width << " vs. " << caps.max_image_width << ")."; |
| return nullptr; |
| } |
| if (image_info->height > caps.max_image_height) { |
| error_reporter->ERROR() |
| << "GpuImage::CreateFromMemory(): image height exceeds maximum (" |
| << image_info->height << " vs. " << caps.max_image_height << ")."; |
| return nullptr; |
| } |
| |
| escher::ImageInfo escher_image_info; |
| escher_image_info.format = pixel_format; |
| escher_image_info.width = image_info->width; |
| escher_image_info.height = image_info->height; |
| escher_image_info.sample_count = 1; |
| escher_image_info.usage = |
| vk::ImageUsageFlagBits::eTransferDst | vk::ImageUsageFlagBits::eSampled; |
| escher_image_info.memory_flags = vk::MemoryPropertyFlagBits::eDeviceLocal; |
| |
| vk::Device vk_device = session->engine()->vk_device(); |
| vk::Image vk_image = |
| escher::image_utils::CreateVkImage(vk_device, escher_image_info); |
| |
| // Make sure that the image is within range of its associated memory. |
| vk::MemoryRequirements memory_reqs; |
| vk_device.getImageMemoryRequirements(vk_image, &memory_reqs); |
| |
| if (memory_offset >= memory->size()) { |
| error_reporter->ERROR() |
| << "GpuImage::CreateFromMemory(): the offset of the Image must be " |
| << "within the range of the Memory"; |
| return nullptr; |
| } |
| |
| if (memory_offset + memory_reqs.size > memory->size()) { |
| error_reporter->ERROR() |
| << "GpuImage::CreateFromMemory(): the Image must fit within the size " |
| << "of the Memory"; |
| return nullptr; |
| } |
| |
| return fxl::AdoptRef(new GpuImage(session, id, std::move(memory), |
| memory_offset, escher_image_info, |
| vk_image)); |
| } |
| |
| bool GpuImage::UpdatePixels() { |
| return false; |
| } |
| |
| } // namespace scene_manager |