588 lines
24 KiB
C++
588 lines
24 KiB
C++
#include <mbgl/vulkan/renderable_resource.hpp>
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#include <mbgl/vulkan/context.hpp>
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#include <mbgl/util/logging.hpp>
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#include <mbgl/util/constants.hpp>
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namespace mbgl {
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namespace vulkan {
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SurfaceRenderableResource::~SurfaceRenderableResource() {
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if (!backend.getDevice()) {
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return;
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}
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try {
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backend.getDevice()->waitIdle(backend.getDispatcher());
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} catch (const vk::DeviceLostError& error) {
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Log::Error(mbgl::Event::Render, "Vulkan device lost during surface shutdown");
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}
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// specific order
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swapchainFramebuffers.clear();
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renderPass.reset();
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swapchainImageViews.clear();
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swapchainImages.clear();
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swapchain.reset();
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surface.reset();
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depthAllocation.reset();
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colorAllocations.clear();
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readTexture.reset();
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}
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void SurfaceRenderableResource::initColor(uint32_t w, uint32_t h) {
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const uint32_t imageCount = backend.getMaxFrames();
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colorAllocations.reserve(imageCount);
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swapchainImages.reserve(imageCount);
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setColorFormat(vk::Format::eR8G8B8A8Unorm);
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extent = vk::Extent2D(w, h);
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const auto imageUsage = vk::ImageUsageFlags() | vk::ImageUsageFlagBits::eColorAttachment |
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vk::ImageUsageFlagBits::eTransferSrc;
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const auto imageCreateInfo = vk::ImageCreateInfo()
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.setImageType(vk::ImageType::e2D)
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.setFormat(colorFormat)
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.setExtent({w, h, 1})
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.setMipLevels(1)
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.setArrayLayers(1)
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.setSamples(vk::SampleCountFlagBits::e1)
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.setTiling(vk::ImageTiling::eOptimal)
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.setUsage(imageUsage)
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.setSharingMode(vk::SharingMode::eExclusive)
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.setInitialLayout(vk::ImageLayout::eUndefined);
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VmaAllocationCreateInfo allocCreateInfo = {};
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allocCreateInfo.usage = VMA_MEMORY_USAGE_AUTO_PREFER_DEVICE;
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allocCreateInfo.requiredFlags = VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT;
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for (uint32_t i = 0; i < imageCount; ++i) {
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colorAllocations.push_back(std::make_unique<ImageAllocation>(backend.getAllocator()));
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auto& colorAllocation = colorAllocations.back();
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if (!colorAllocation->create(allocCreateInfo, imageCreateInfo)) {
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mbgl::Log::Error(mbgl::Event::Render, "Vulkan color texture allocation failed");
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}
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swapchainImages.push_back(colorAllocation->image);
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}
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}
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void SurfaceRenderableResource::initSwapchain(uint32_t w, uint32_t h) {
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const auto& physicalDevice = backend.getPhysicalDevice();
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const auto& device = backend.getDevice();
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const auto& dispatcher = backend.getDispatcher();
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const std::vector<vk::SurfaceFormatKHR>& formats = physicalDevice.getSurfaceFormatsKHR(surface.get(), dispatcher);
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const auto& formatIt = std::find_if(formats.begin(), formats.end(), [](const vk::SurfaceFormatKHR& format) {
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return (format.format == vk::Format::eB8G8R8A8Unorm || format.format == vk::Format::eR8G8B8A8Unorm) &&
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format.colorSpace == vk::ColorSpaceKHR::eSrgbNonlinear;
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});
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if (formatIt == formats.end()) throw std::runtime_error("No suitable swapchain format found");
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// only vk::PresentModeKHR::eFifo (vsync on) is guaranteed
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if (presentMode != vk::PresentModeKHR::eFifo) {
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const auto& presentModes = physicalDevice.getSurfacePresentModesKHR(surface.get(), dispatcher);
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if (std::find(presentModes.begin(), presentModes.end(), presentMode) == presentModes.end()) {
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mbgl::Log::Error(
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mbgl::Event::Render,
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"Requested PresentModeKHR not available (" + std::to_string(static_cast<int>(presentMode)) + ")");
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presentMode = vk::PresentModeKHR::eFifo;
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}
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}
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vk::ImageUsageFlags imageUsage = vk::ImageUsageFlagBits::eColorAttachment;
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capabilities = physicalDevice.getSurfaceCapabilitiesKHR(surface.get(), dispatcher);
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// when reading from the swapchain disable pre-rotation and enable source transfer usage
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if (surfaceRead) {
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capabilities.currentTransform = vk::SurfaceTransformFlagBitsKHR::eIdentity;
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imageUsage |= vk::ImageUsageFlagBits::eTransferSrc;
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}
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// pick surface size
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if (capabilities.currentExtent.width != std::numeric_limits<uint32_t>::max()) {
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extent = capabilities.currentExtent;
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} else {
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// update values based on surface limits
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extent.width = std::min(std::max(w, capabilities.minImageExtent.width), capabilities.maxImageExtent.width);
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extent.height = std::min(std::max(h, capabilities.minImageExtent.height), capabilities.maxImageExtent.height);
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if (hasSurfaceTransformSupport()) {
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if (capabilities.currentTransform & vk::SurfaceTransformFlagBitsKHR::eRotate90 ||
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capabilities.currentTransform & vk::SurfaceTransformFlagBitsKHR::eRotate270) {
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std::swap(extent.width, extent.height);
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}
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}
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}
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uint32_t swapchainImageCount = capabilities.minImageCount + 1;
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// check surface limits (0 is unlimited)
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if (capabilities.maxImageCount > 0) {
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swapchainImageCount = std::min(swapchainImageCount, capabilities.maxImageCount);
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}
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auto swapchainCreateInfo = vk::SwapchainCreateInfoKHR()
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.setSurface(surface.get())
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.setMinImageCount(swapchainImageCount)
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.setImageFormat(formatIt->format)
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.setImageColorSpace(formatIt->colorSpace)
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.setPresentMode(presentMode)
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.setImageExtent(extent)
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.setImageArrayLayers(1)
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.setImageUsage(imageUsage);
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int32_t graphicsQueueIndex = backend.getGraphicsQueueIndex();
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int32_t presentQueueIndex = backend.getPresentQueueIndex();
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if (graphicsQueueIndex != presentQueueIndex) {
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// TODO if this scenario is widespread and performance is a problem (shouldn't be the case on most hardware)
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// rework to vk::SharingMode::eExclusive + queue ownership
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swapchainCreateInfo.setImageSharingMode(vk::SharingMode::eConcurrent);
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const std::array<uint32_t, 2> queueIndices = {static_cast<uint32_t>(graphicsQueueIndex),
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static_cast<uint32_t>(presentQueueIndex)};
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swapchainCreateInfo.setQueueFamilyIndices(queueIndices);
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} else {
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swapchainCreateInfo.setImageSharingMode(vk::SharingMode::eExclusive);
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}
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swapchainCreateInfo.setPreTransform(hasSurfaceTransformSupport() ? capabilities.currentTransform
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: vk::SurfaceTransformFlagBitsKHR::eIdentity);
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swapchainCreateInfo.setClipped(VK_TRUE);
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if (capabilities.supportedCompositeAlpha & vk::CompositeAlphaFlagBitsKHR::eInherit) {
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swapchainCreateInfo.setCompositeAlpha(vk::CompositeAlphaFlagBitsKHR::eInherit);
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} else {
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swapchainCreateInfo.setCompositeAlpha(vk::CompositeAlphaFlagBitsKHR::eOpaque);
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}
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// update this when recreating
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swapchainCreateInfo.setOldSwapchain(swapchain.get());
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swapchain = device->createSwapchainKHRUnique(swapchainCreateInfo, nullptr, dispatcher);
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swapchainImages = device->getSwapchainImagesKHR(swapchain.get(), dispatcher);
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setColorFormat(swapchainCreateInfo.imageFormat);
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extent = swapchainCreateInfo.imageExtent;
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acquireSemaphores.reserve(swapchainImages.size());
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presentSemaphores.reserve(swapchainImages.size());
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for (uint32_t index = 0; index < swapchainImages.size(); ++index) {
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acquireSemaphores.emplace_back(device->createSemaphoreUnique({}, nullptr, dispatcher));
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presentSemaphores.emplace_back(device->createSemaphoreUnique({}, nullptr, dispatcher));
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const auto indexStr = std::to_string(index);
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backend.setDebugName(acquireSemaphores.back().get(), "PresentSemaphore_" + indexStr);
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backend.setDebugName(presentSemaphores.back().get(), "AcquireSemaphore_" + indexStr);
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}
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}
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void SurfaceRenderableResource::initDepthStencil() {
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const auto& physicalDevice = backend.getPhysicalDevice();
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const auto& device = backend.getDevice();
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const auto& dispatcher = backend.getDispatcher();
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// check for depth format support
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const std::vector<vk::Format> formats = {
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vk::Format::eD24UnormS8Uint,
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vk::Format::eD32SfloatS8Uint,
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vk::Format::eD16UnormS8Uint,
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};
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const auto& formatIt = std::find_if(formats.begin(), formats.end(), [&](const auto& format) {
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const auto& formatProps = physicalDevice.getFormatProperties(format, dispatcher);
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return formatProps.optimalTilingFeatures & vk::FormatFeatureFlagBits::eDepthStencilAttachment;
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});
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if (formatIt == formats.end()) {
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mbgl::Log::Error(mbgl::Event::Render, "Depth/Stencil format not available");
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return;
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}
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setDepthFormat(*formatIt);
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const auto imageUsage = vk::ImageUsageFlags() | vk::ImageUsageFlagBits::eDepthStencilAttachment |
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vk::ImageUsageFlagBits::eTransientAttachment;
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const auto imageCreateInfo = vk::ImageCreateInfo()
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.setImageType(vk::ImageType::e2D)
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.setFormat(depthFormat)
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.setExtent({extent.width, extent.height, 1})
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.setMipLevels(1)
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.setArrayLayers(1)
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.setSamples(vk::SampleCountFlagBits::e1)
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.setTiling(vk::ImageTiling::eOptimal)
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.setUsage(imageUsage)
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.setSharingMode(vk::SharingMode::eExclusive)
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.setInitialLayout(vk::ImageLayout::eUndefined);
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VmaAllocationCreateInfo allocCreateInfo = {};
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allocCreateInfo.usage = VMA_MEMORY_USAGE_GPU_LAZILY_ALLOCATED;
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allocCreateInfo.flags = VMA_ALLOCATION_CREATE_DEDICATED_MEMORY_BIT;
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uint32_t lazyMemoryIndex = 0;
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uint32_t memoryTypeBits = std::numeric_limits<uint32_t>::max();
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if (vmaFindMemoryTypeIndex(backend.getAllocator(), memoryTypeBits, &allocCreateInfo, &lazyMemoryIndex) !=
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VK_SUCCESS) {
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allocCreateInfo.usage = VMA_MEMORY_USAGE_AUTO_PREFER_DEVICE;
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}
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depthAllocation = std::make_unique<ImageAllocation>(backend.getAllocator());
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if (!depthAllocation->create(allocCreateInfo, imageCreateInfo)) {
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mbgl::Log::Error(mbgl::Event::Render, "Vulkan depth texture allocation failed");
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return;
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}
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const auto imageViewCreateInfo =
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vk::ImageViewCreateInfo()
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.setImage(depthAllocation->image)
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.setViewType(vk::ImageViewType::e2D)
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.setFormat(depthFormat)
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.setComponents(vk::ComponentMapping()) // defaults to vk::ComponentSwizzle::eIdentity
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.setSubresourceRange(vk::ImageSubresourceRange(
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vk::ImageAspectFlagBits::eDepth | vk::ImageAspectFlagBits::eStencil, 0, 1, 0, 1));
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depthAllocation->imageView = device->createImageViewUnique(imageViewCreateInfo, nullptr, dispatcher);
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backend.setDebugName(depthAllocation->image, "SwapchainDepthImage");
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backend.setDebugName(depthAllocation->imageView.get(), "SwapchainDepthImageView");
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}
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void SurfaceRenderableResource::initRenderPass() {
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// The current render pass should be invalidated if:
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// - color/depth format changes (use setColorFormat/setDepthFormat)
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// - renderable resource type changes
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// - this is done currently only by inheritance and it can't change during runtime
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if (renderPass) {
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return;
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}
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const auto& device = backend.getDevice();
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const auto& dispatcher = backend.getDispatcher();
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const auto colorLayout = surface ? vk::ImageLayout::ePresentSrcKHR : vk::ImageLayout::eTransferSrcOptimal;
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const std::array<vk::AttachmentDescription, 2> attachments = {
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vk::AttachmentDescription()
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.setFormat(colorFormat)
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.setSamples(vk::SampleCountFlagBits::e1)
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.setLoadOp(vk::AttachmentLoadOp::eClear)
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.setStoreOp(vk::AttachmentStoreOp::eStore)
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.setStencilLoadOp(vk::AttachmentLoadOp::eDontCare)
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.setStencilStoreOp(vk::AttachmentStoreOp::eDontCare)
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.setInitialLayout(vk::ImageLayout::eUndefined)
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.setFinalLayout(colorLayout),
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vk::AttachmentDescription()
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.setFormat(depthFormat)
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.setSamples(vk::SampleCountFlagBits::e1)
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.setLoadOp(vk::AttachmentLoadOp::eClear)
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.setStoreOp(vk::AttachmentStoreOp::eDontCare)
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.setStencilLoadOp(vk::AttachmentLoadOp::eClear)
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.setStencilStoreOp(vk::AttachmentStoreOp::eDontCare)
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.setInitialLayout(vk::ImageLayout::eUndefined)
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.setFinalLayout(vk::ImageLayout::eDepthStencilAttachmentOptimal)};
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const vk::AttachmentReference colorAttachmentRef(0, vk::ImageLayout::eColorAttachmentOptimal);
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const vk::AttachmentReference depthAttachmentRef(1, vk::ImageLayout::eDepthStencilAttachmentOptimal);
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const auto subpass = vk::SubpassDescription()
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.setPipelineBindPoint(vk::PipelineBindPoint::eGraphics)
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.setColorAttachmentCount(1)
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.setColorAttachments(colorAttachmentRef)
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.setPDepthStencilAttachment(&depthAttachmentRef);
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const std::array<vk::SubpassDependency, 2> dependencies = {
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vk::SubpassDependency()
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.setSrcSubpass(VK_SUBPASS_EXTERNAL)
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.setDstSubpass(0)
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.setSrcStageMask(vk::PipelineStageFlagBits::eColorAttachmentOutput)
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.setDstStageMask(vk::PipelineStageFlagBits::eColorAttachmentOutput)
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.setSrcAccessMask(vk::AccessFlagBits::eColorAttachmentWrite)
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.setDstAccessMask(vk::AccessFlagBits::eColorAttachmentWrite)
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.setDependencyFlags(vk::DependencyFlagBits::eByRegion),
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vk::SubpassDependency()
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.setSrcSubpass(VK_SUBPASS_EXTERNAL)
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.setDstSubpass(0)
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.setSrcStageMask(vk::PipelineStageFlagBits::eEarlyFragmentTests |
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vk::PipelineStageFlagBits::eLateFragmentTests)
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.setDstStageMask(vk::PipelineStageFlagBits::eEarlyFragmentTests |
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vk::PipelineStageFlagBits::eLateFragmentTests)
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.setSrcAccessMask(vk::AccessFlagBits::eDepthStencilAttachmentWrite)
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.setDstAccessMask(vk::AccessFlagBits::eDepthStencilAttachmentWrite)
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.setDependencyFlags(vk::DependencyFlagBits::eByRegion),
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};
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const auto renderPassCreateInfo =
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vk::RenderPassCreateInfo().setAttachments(attachments).setSubpasses(subpass).setDependencies(dependencies);
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renderPass = device->createRenderPassUnique(renderPassCreateInfo, nullptr, dispatcher);
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}
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void SurfaceRenderableResource::setColorFormat(vk::Format format) {
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if (colorFormat == format) {
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return;
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}
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renderPass.reset();
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colorFormat = format;
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}
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void SurfaceRenderableResource::setDepthFormat(vk::Format format) {
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if (depthFormat == format) {
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return;
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}
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renderPass.reset();
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depthFormat = format;
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}
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void SurfaceRenderableResource::swap() {
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auto& context = static_cast<Context&>(backend.getContext());
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if (surfaceRead) {
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copySurfaceToReadTexture();
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}
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context.submitFrame();
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if (surfaceRead) {
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context.waitFrame();
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surfaceRead = false;
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}
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}
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const vk::Image SurfaceRenderableResource::getAcquiredImage() const {
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if (surface) {
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return swapchainImages[acquiredImageIndex];
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}
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return colorAllocations[acquiredImageIndex]->image;
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}
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const vk::Semaphore& SurfaceRenderableResource::getAcquireSemaphore() const {
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const auto& context = static_cast<const Context&>(backend.getContext());
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return acquireSemaphores[context.getCurrentFrameResourceIndex()].get();
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}
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const vk::Semaphore& SurfaceRenderableResource::getPresentSemaphore() const {
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return presentSemaphores[acquiredImageIndex].get();
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}
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bool SurfaceRenderableResource::hasSurfaceTransformSupport() const {
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return surface && capabilities.supportedTransforms != vk::SurfaceTransformFlagBitsKHR::eIdentity;
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}
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bool SurfaceRenderableResource::didSurfaceTransformUpdate() const {
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const auto& physicalDevice = backend.getPhysicalDevice();
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const auto& updatedCapabilities = physicalDevice.getSurfaceCapabilitiesKHR(surface.get(), backend.getDispatcher());
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return capabilities.currentTransform != updatedCapabilities.currentTransform;
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}
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float SurfaceRenderableResource::getRotation() {
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switch (capabilities.currentTransform) {
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default:
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case vk::SurfaceTransformFlagBitsKHR::eIdentity:
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return 0.0f * M_PI / 180.0f;
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case vk::SurfaceTransformFlagBitsKHR::eRotate90:
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case vk::SurfaceTransformFlagBitsKHR::eHorizontalMirrorRotate90:
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return 90.0f * M_PI / 180.0f;
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case vk::SurfaceTransformFlagBitsKHR::eRotate180:
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case vk::SurfaceTransformFlagBitsKHR::eHorizontalMirrorRotate180:
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return 180.0f * M_PI / 180.0f;
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case vk::SurfaceTransformFlagBitsKHR::eRotate270:
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case vk::SurfaceTransformFlagBitsKHR::eHorizontalMirrorRotate270:
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return 270.0f * M_PI / 180.0f;
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}
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}
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void SurfaceRenderableResource::init(uint32_t w, uint32_t h) {
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if (surface) {
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initSwapchain(w, h);
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} else {
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initColor(w, h);
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}
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const auto& device = backend.getDevice();
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const auto& dispatcher = backend.getDispatcher();
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// create swapchain image views
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swapchainImageViews.reserve(swapchainImages.size());
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auto imageViewCreateInfo = vk::ImageViewCreateInfo()
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.setViewType(vk::ImageViewType::e2D)
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.setFormat(colorFormat)
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.setComponents(vk::ComponentMapping()) // defaults to vk::ComponentSwizzle::eIdentity
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.setSubresourceRange({vk::ImageAspectFlagBits::eColor, 0, 1, 0, 1});
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for (const auto& image : swapchainImages) {
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imageViewCreateInfo.setImage(image);
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swapchainImageViews.push_back(device->createImageViewUnique(imageViewCreateInfo, nullptr, dispatcher));
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const size_t index = swapchainImageViews.size() - 1;
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backend.setDebugName(image, "SwapchainImage_" + std::to_string(index));
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backend.setDebugName(image, "SwapchainImageView_" + std::to_string(index));
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}
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// depth resources
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initDepthStencil();
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// create render pass
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initRenderPass();
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// create swapchain framebuffers
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swapchainFramebuffers.reserve(swapchainImageViews.size());
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auto framebufferCreateInfo = vk::FramebufferCreateInfo()
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.setRenderPass(renderPass.get())
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.setAttachmentCount(2)
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.setWidth(extent.width)
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.setHeight(extent.height)
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.setLayers(1);
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for (const auto& imageView : swapchainImageViews) {
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const std::array<vk::ImageView, 2> imageViews = {imageView.get(), depthAllocation->imageView.get()};
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framebufferCreateInfo.setAttachments(imageViews);
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swapchainFramebuffers.push_back(device->createFramebufferUnique(framebufferCreateInfo, nullptr, dispatcher));
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}
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}
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|
|
|
void SurfaceRenderableResource::recreateSwapchain() {
|
|
if (!surface) return;
|
|
|
|
backend.getDevice()->waitIdle(backend.getDispatcher());
|
|
|
|
swapchainFramebuffers.clear();
|
|
swapchainImageViews.clear();
|
|
swapchainImages.clear();
|
|
acquireSemaphores.clear();
|
|
presentSemaphores.clear();
|
|
|
|
readTexture.reset();
|
|
|
|
init(extent.width, extent.height);
|
|
}
|
|
|
|
void SurfaceRenderableResource::queueSurfaceRead() {
|
|
if (surfaceRead) {
|
|
return;
|
|
}
|
|
|
|
surfaceRead = true;
|
|
backend.getContext<Context>().requestSurfaceUpdate(false);
|
|
}
|
|
|
|
void SurfaceRenderableResource::copySurfaceToReadTexture() {
|
|
auto& contextImpl = backend.getContext<Context>();
|
|
const auto& dispatcher = backend.getDispatcher();
|
|
const auto& physicalDevice = backend.getPhysicalDevice();
|
|
|
|
if (!readTexture) {
|
|
readTexture = std::make_unique<Texture2D>(contextImpl);
|
|
readTexture->setFormat(gfx::TexturePixelType::RGBA, gfx::TextureChannelDataType::UnsignedByte);
|
|
readTexture->setUsage(Texture2DUsage::Read);
|
|
}
|
|
|
|
readTexture->setSize({extent.width, extent.height});
|
|
|
|
const auto swapchainImage = getAcquiredImage();
|
|
auto& commandBuffer = contextImpl.getCommandBuffer();
|
|
|
|
if (surface) {
|
|
const auto barrier = vk::ImageMemoryBarrier()
|
|
.setImage(swapchainImage)
|
|
.setOldLayout(vk::ImageLayout::ePresentSrcKHR)
|
|
.setNewLayout(vk::ImageLayout::eTransferSrcOptimal)
|
|
.setSrcAccessMask({})
|
|
.setDstAccessMask(vk::AccessFlagBits::eTransferWrite)
|
|
.setSrcQueueFamilyIndex(VK_QUEUE_FAMILY_IGNORED)
|
|
.setDstQueueFamilyIndex(VK_QUEUE_FAMILY_IGNORED)
|
|
.setSubresourceRange({vk::ImageAspectFlagBits::eColor, 0, 1, 0, 1});
|
|
|
|
commandBuffer->pipelineBarrier(vk::PipelineStageFlagBits::eTopOfPipe,
|
|
vk::PipelineStageFlagBits::eTransfer,
|
|
{},
|
|
nullptr,
|
|
nullptr,
|
|
barrier,
|
|
dispatcher);
|
|
}
|
|
|
|
bool useBlit =
|
|
surface &&
|
|
(physicalDevice.getFormatProperties(colorFormat, dispatcher).optimalTilingFeatures &
|
|
vk::FormatFeatureFlagBits::eBlitSrc &&
|
|
physicalDevice.getFormatProperties(readTexture->getVulkanFormat(), dispatcher).linearTilingFeatures &
|
|
vk::FormatFeatureFlagBits::eBlitDst);
|
|
|
|
if (useBlit) {
|
|
readTexture->blitImage(swapchainImage, readTexture->getSize(), 0, 0, commandBuffer);
|
|
} else {
|
|
readTexture->copyImage(swapchainImage, readTexture->getSize(), 0, 0, commandBuffer);
|
|
}
|
|
|
|
if (surface) {
|
|
const auto barrier = vk::ImageMemoryBarrier()
|
|
.setImage(swapchainImage)
|
|
.setOldLayout(vk::ImageLayout::eTransferSrcOptimal)
|
|
.setNewLayout(vk::ImageLayout::ePresentSrcKHR)
|
|
.setSrcAccessMask(vk::AccessFlagBits::eMemoryRead)
|
|
.setDstAccessMask(vk::AccessFlagBits::eTransferWrite)
|
|
.setSrcQueueFamilyIndex(VK_QUEUE_FAMILY_IGNORED)
|
|
.setDstQueueFamilyIndex(VK_QUEUE_FAMILY_IGNORED)
|
|
.setSubresourceRange({vk::ImageAspectFlagBits::eColor, 0, 1, 0, 1});
|
|
|
|
commandBuffer->pipelineBarrier(vk::PipelineStageFlagBits::eTopOfPipe,
|
|
vk::PipelineStageFlagBits::eTransfer,
|
|
{},
|
|
nullptr,
|
|
nullptr,
|
|
barrier,
|
|
dispatcher);
|
|
}
|
|
}
|
|
|
|
std::shared_ptr<PremultipliedImage> SurfaceRenderableResource::readImage() {
|
|
if (!readTexture) {
|
|
return nullptr;
|
|
}
|
|
|
|
const auto& dispatcher = backend.getDispatcher();
|
|
const auto& physicalDevice = backend.getPhysicalDevice();
|
|
|
|
bool useBlit =
|
|
surface &&
|
|
(physicalDevice.getFormatProperties(colorFormat, dispatcher).optimalTilingFeatures &
|
|
vk::FormatFeatureFlagBits::eBlitSrc &&
|
|
physicalDevice.getFormatProperties(readTexture->getVulkanFormat(), dispatcher).linearTilingFeatures &
|
|
vk::FormatFeatureFlagBits::eBlitDst);
|
|
|
|
const auto image = readTexture->readImage();
|
|
|
|
// swizzle pixels to RGBA
|
|
if (!useBlit && colorFormat == vk::Format::eB8G8R8A8Unorm) {
|
|
for (size_t i = 0, size = image->size.area(); i < size; ++i) {
|
|
std::swap(image->data[i * image->channels + 0], image->data[i * image->channels + 2]);
|
|
}
|
|
}
|
|
|
|
return image;
|
|
}
|
|
|
|
} // namespace vulkan
|
|
} // namespace mbgl
|