2 files changed, 190 insertions, 0 deletions

diff --git a/src/video_core/renderer_vulkan/vk_image.cpp b/src/video_core/renderer_vulkan/vk_image.cpp
new file mode 100644
index 000000000..4bcbef959
--- /dev/null
+++ b/src/video_core/renderer_vulkan/vk_image.cpp
@@ -0,0 +1,106 @@
+// Copyright 2018 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <memory>
+#include <vector>
+
+#include "common/assert.h"
+#include "video_core/renderer_vulkan/declarations.h"
+#include "video_core/renderer_vulkan/vk_device.h"
+#include "video_core/renderer_vulkan/vk_image.h"
+#include "video_core/renderer_vulkan/vk_scheduler.h"
+
+namespace Vulkan {
+
+VKImage::VKImage(const VKDevice& device, VKScheduler& scheduler,
+                 const vk::ImageCreateInfo& image_ci, vk::ImageAspectFlags aspect_mask)
+    : device{device}, scheduler{scheduler}, format{image_ci.format}, aspect_mask{aspect_mask},
+      image_num_layers{image_ci.arrayLayers}, image_num_levels{image_ci.mipLevels} {
+    UNIMPLEMENTED_IF_MSG(image_ci.queueFamilyIndexCount != 0,
+                         "Queue family tracking is not implemented");
+
+    const auto dev = device.GetLogical();
+    image = dev.createImageUnique(image_ci, nullptr, device.GetDispatchLoader());
+
+    const u32 num_ranges = image_num_layers * image_num_levels;
+    barriers.resize(num_ranges);
+    subrange_states.resize(num_ranges, {{}, image_ci.initialLayout});
+}
+
+VKImage::~VKImage() = default;
+
+void VKImage::Transition(u32 base_layer, u32 num_layers, u32 base_level, u32 num_levels,
+                         vk::PipelineStageFlags new_stage_mask, vk::AccessFlags new_access,
+                         vk::ImageLayout new_layout) {
+    if (!HasChanged(base_layer, num_layers, base_level, num_levels, new_access, new_layout)) {
+        return;
+    }
+
+    std::size_t cursor = 0;
+    for (u32 layer_it = 0; layer_it < num_layers; ++layer_it) {
+        for (u32 level_it = 0; level_it < num_levels; ++level_it, ++cursor) {
+            const u32 layer = base_layer + layer_it;
+            const u32 level = base_level + level_it;
+            auto& state = GetSubrangeState(layer, level);
+            barriers[cursor] = vk::ImageMemoryBarrier(
+                state.access, new_access, state.layout, new_layout, VK_QUEUE_FAMILY_IGNORED,
+                VK_QUEUE_FAMILY_IGNORED, *image, {aspect_mask, level, 1, layer, 1});
+            state.access = new_access;
+            state.layout = new_layout;
+        }
+    }
+
+    scheduler.RequestOutsideRenderPassOperationContext();
+
+    scheduler.Record([barriers = barriers, cursor](auto cmdbuf, auto& dld) {
+        // TODO(Rodrigo): Implement a way to use the latest stage across subresources.
+        constexpr auto stage_stub = vk::PipelineStageFlagBits::eAllCommands;
+        cmdbuf.pipelineBarrier(stage_stub, stage_stub, {}, 0, nullptr, 0, nullptr,
+                               static_cast<u32>(cursor), barriers.data(), dld);
+    });
+}
+
+bool VKImage::HasChanged(u32 base_layer, u32 num_layers, u32 base_level, u32 num_levels,
+                         vk::AccessFlags new_access, vk::ImageLayout new_layout) noexcept {
+    const bool is_full_range = base_layer == 0 && num_layers == image_num_layers &&
+                               base_level == 0 && num_levels == image_num_levels;
+    if (!is_full_range) {
+        state_diverged = true;
+    }
+
+    if (!state_diverged) {
+        auto& state = GetSubrangeState(0, 0);
+        if (state.access != new_access || state.layout != new_layout) {
+            return true;
+        }
+    }
+
+    for (u32 layer_it = 0; layer_it < num_layers; ++layer_it) {
+        for (u32 level_it = 0; level_it < num_levels; ++level_it) {
+            const u32 layer = base_layer + layer_it;
+            const u32 level = base_level + level_it;
+            auto& state = GetSubrangeState(layer, level);
+            if (state.access != new_access || state.layout != new_layout) {
+                return true;
+            }
+        }
+    }
+    return false;
+}
+
+void VKImage::CreatePresentView() {
+    // Image type has to be 2D to be presented.
+    const vk::ImageViewCreateInfo image_view_ci({}, *image, vk::ImageViewType::e2D, format, {},
+                                                {aspect_mask, 0, 1, 0, 1});
+    const auto dev = device.GetLogical();
+    const auto& dld = device.GetDispatchLoader();
+    present_view = dev.createImageViewUnique(image_view_ci, nullptr, dld);
+}
+
+VKImage::SubrangeState& VKImage::GetSubrangeState(u32 layer, u32 level) noexcept {
+    return subrange_states[static_cast<std::size_t>(layer * image_num_levels) +
+                           static_cast<std::size_t>(level)];
+}
+
+} // namespace Vulkan
\ No newline at end of file
diff --git a/src/video_core/renderer_vulkan/vk_image.h b/src/video_core/renderer_vulkan/vk_image.h
new file mode 100644
index 000000000..dc8095032
--- /dev/null
+++ b/src/video_core/renderer_vulkan/vk_image.h
@@ -0,0 +1,84 @@
+// Copyright 2018 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <memory>
+#include <vector>
+
+#include "common/common_types.h"
+#include "video_core/renderer_vulkan/declarations.h"
+
+namespace Vulkan {
+
+class VKDevice;
+class VKScheduler;
+
+class VKImage {
+public:
+    explicit VKImage(const VKDevice& device, VKScheduler& scheduler,
+                     const vk::ImageCreateInfo& image_ci, vk::ImageAspectFlags aspect_mask);
+    ~VKImage();
+
+    /// Records in the passed command buffer an image transition and updates the state of the image.
+    void Transition(u32 base_layer, u32 num_layers, u32 base_level, u32 num_levels,
+                    vk::PipelineStageFlags new_stage_mask, vk::AccessFlags new_access,
+                    vk::ImageLayout new_layout);
+
+    /// Returns a view compatible with presentation, the image has to be 2D.
+    vk::ImageView GetPresentView() {
+        if (!present_view) {
+            CreatePresentView();
+        }
+        return *present_view;
+    }
+
+    /// Returns the Vulkan image handler.
+    vk::Image GetHandle() const {
+        return *image;
+    }
+
+    /// Returns the Vulkan format for this image.
+    vk::Format GetFormat() const {
+        return format;
+    }
+
+    /// Returns the Vulkan aspect mask.
+    vk::ImageAspectFlags GetAspectMask() const {
+        return aspect_mask;
+    }
+
+private:
+    struct SubrangeState final {
+        vk::AccessFlags access = {};                          ///< Current access bits.
+        vk::ImageLayout layout = vk::ImageLayout::eUndefined; ///< Current image layout.
+    };
+
+    bool HasChanged(u32 base_layer, u32 num_layers, u32 base_level, u32 num_levels,
+                    vk::AccessFlags new_access, vk::ImageLayout new_layout) noexcept;
+
+    /// Creates a presentation view.
+    void CreatePresentView();
+
+    /// Returns the subrange state for a layer and layer.
+    SubrangeState& GetSubrangeState(u32 layer, u32 level) noexcept;
+
+    const VKDevice& device; ///< Device handler.
+    VKScheduler& scheduler; ///< Device scheduler.
+
+    const vk::Format format;                ///< Vulkan format.
+    const vk::ImageAspectFlags aspect_mask; ///< Vulkan aspect mask.
+    const u32 image_num_layers;             ///< Number of layers.
+    const u32 image_num_levels;             ///< Number of mipmap levels.
+
+    UniqueImage image;            ///< Image handle.
+    UniqueImageView present_view; ///< Image view compatible with presentation.
+
+    std::vector<vk::ImageMemoryBarrier> barriers; ///< Pool of barriers.
+    std::vector<SubrangeState> subrange_states;   ///< Current subrange state.
+
+    bool state_diverged = false; ///< True when subresources mismatch in layout.
+};
+
+} // namespace Vulkan