recreate descriptors

engine/xe_image.cpp

@@ -12,11 +12,13 @@ namespace xe {
 
 XeImage::XeImage(XeDevice &xeDevice, const std::string &filename) : xeDevice{xeDevice} {
   createTextureImage(filename);
+  createTextureImageView();
 }
 
 XeImage::~XeImage() {
   vkDestroyImage(xeDevice.device(), textureImage, nullptr);
   vkFreeMemory(xeDevice.device(), textureImageMemory, nullptr);
+  vkDestroyImageView(xeDevice.device(), textureImageView, nullptr);
 }
 
 void XeImage::createTextureImage(const std::string &filename) {
@@ -163,4 +165,21 @@ void XeImage::transitionImageLayout(VkImage image, VkFormat format, VkImageLayou
   xeDevice.endSingleTimeCommands(commandBuffer);
 }
 
+void XeImage::createTextureImageView() {
+    VkImageViewCreateInfo viewInfo{};
+    viewInfo.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
+    viewInfo.image = textureImage;
+    viewInfo.viewType = VK_IMAGE_VIEW_TYPE_2D;
+    viewInfo.format = VK_FORMAT_R8G8B8A8_SRGB;
+    viewInfo.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
+    viewInfo.subresourceRange.baseMipLevel = 0;
+    viewInfo.subresourceRange.levelCount = 1;
+    viewInfo.subresourceRange.baseArrayLayer = 0;
+    viewInfo.subresourceRange.layerCount = 1;
+
+    if (vkCreateImageView(xeDevice.device(), &viewInfo, nullptr, &textureImageView) != VK_SUCCESS) {
+    throw std::runtime_error("failed to create texture image view!");
+    }
+}
+
 }

engine/xe_image.hpp

@@ -22,10 +22,12 @@ class XeImage {
     void createImage(uint32_t width, uint32_t height, VkFormat format, VkImageTiling tiling, VkImageUsageFlags usage, VkMemoryPropertyFlags properties, VkImage& image, VkDeviceMemory& imageMemory);
     void transitionImageLayout(VkImage image, VkFormat format, VkImageLayout oldLayout, VkImageLayout newLayout);
     void copyBufferToImage(VkBuffer buffer, VkImage image, uint32_t width, uint32_t height);
+    void createTextureImageView();
 
     XeDevice &xeDevice;
 
     VkImage textureImage;
+    VkImageView textureImageView;
     VkDeviceMemory textureImageMemory;
 
     friend class XeRenderSystem;

engine/xe_render_system.cpp

@@ -25,13 +25,13 @@ XeRenderSystem::XeRenderSystem(
   XeImage *image
 ) : xeDevice{xeEngine.xeDevice}, 
     xeRenderer{xeEngine.xeRenderer},
+    xeDescriptorPool{xeEngine.xeDescriptorPool},
     pushCunstantDataSize{pushCunstantDataSize},
     uniformBufferDataSize{uniformBufferDataSize},
     textureSamplerBinding{image != nullptr} {
   createDescriptorSetLayout();
   createUniformBuffers();
-  createTextureImageView(image);
+  createDescriptorSets(image);
-  createDescriptorSets(*xeEngine.xeDescriptorPool);
   createPipelineLayout();
   createPipeline(xeRenderer.getSwapChainRenderPass(), vert, frag);
 }
@@ -41,7 +41,6 @@ XeRenderSystem::~XeRenderSystem() {
   vkDestroyPipelineLayout(xeDevice.device(), pipelineLayout, nullptr);
   if ( textureSamplerBinding ) {
     vkDestroySampler(xeDevice.device(), textureSampler, nullptr);
-    vkDestroyImageView(xeDevice.device(), textureImageView, nullptr);
   }
 };
 
@@ -100,34 +99,18 @@ void XeRenderSystem::createUniformBuffers() {
 
 }
 
-void XeRenderSystem::createTextureImageView(XeImage *image) {
+void XeRenderSystem::createDescriptorSets(XeImage *image) {
-
-  if (!textureSamplerBinding) { 
-    return;
-  }
-
-  VkImageViewCreateInfo viewInfo{};
-  viewInfo.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
-  viewInfo.image = image->textureImage;
-  viewInfo.viewType = VK_IMAGE_VIEW_TYPE_2D;
-  viewInfo.format = VK_FORMAT_R8G8B8A8_SRGB;
-  viewInfo.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
-  viewInfo.subresourceRange.baseMipLevel = 0;
-  viewInfo.subresourceRange.levelCount = 1;
-  viewInfo.subresourceRange.baseArrayLayer = 0;
-  viewInfo.subresourceRange.layerCount = 1;
-
-  if (vkCreateImageView(xeDevice.device(), &viewInfo, nullptr, &textureImageView) != VK_SUCCESS) {
-    throw std::runtime_error("failed to create texture image view!");
-  }
-}
-
-void XeRenderSystem::createDescriptorSets(XeDescriptorPool &xeDescriptorPool) {
 
   descriptorSets = std::vector<VkDescriptorSet>(XeSwapChain::MAX_FRAMES_IN_FLIGHT);
   for (int i = 0; i < descriptorSets.size(); i++) {
-    auto bufferInfo = uboBuffers[i]->descriptorInfo();
+    updateDescriptorSet(image, i, true);
-    XeDescriptorWriter writer{*xeDescriptorSetLayout, xeDescriptorPool};
+  }
+
+}
+
+void XeRenderSystem::updateDescriptorSet(XeImage *image, int frameIndex, bool allocate) {
+  auto bufferInfo = uboBuffers[frameIndex]->descriptorInfo();
+    XeDescriptorWriter writer{*xeDescriptorSetLayout, *xeDescriptorPool};
     
     int binding = 0;
 
@@ -139,12 +122,15 @@ void XeRenderSystem::createDescriptorSets(XeDescriptorPool &xeDescriptorPool) {
     if (textureSamplerBinding) {
       VkDescriptorImageInfo imageInfo{};
       imageInfo.imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
-      imageInfo.imageView = textureImageView;
+      imageInfo.imageView = image->textureImageView;
       imageInfo.sampler = textureSampler;
       writer.writeImage(binding, &imageInfo);
       binding += 1;
     }
-    writer.build(descriptorSets[i]);
+    if (allocate) {
+      writer.build(descriptorSets[frameIndex]);
+    } else {
+      writer.overwrite(descriptorSets[frameIndex]);
     }
     
 }
@@ -234,7 +220,7 @@ void XeRenderSystem::loadUniformObject(void *uniformBufferData) {
 }
 
 void XeRenderSystem::loadTexture(XeImage *image) {
-  // createTextureImageView(image);
+  updateDescriptorSet(image, xeRenderer.getFrameIndex(), false);
 }
 
 void XeRenderSystem::render(XeGameObject &gameObject) {

engine/xe_render_system.hpp

@@ -41,8 +41,8 @@ class XeRenderSystem {
   
     void createDescriptorSetLayout();
     void createUniformBuffers();
-    void createTextureImageView(XeImage *image);
+    void createDescriptorSets(XeImage *image);
-    void createDescriptorSets(XeDescriptorPool &xeDescriptorPool);
+    void updateDescriptorSet(XeImage *image, int frameIndex, bool allocate);
     void createPipelineLayout();
     void createPipeline(VkRenderPass renderPass, std::string vert, std::string frag);
 
@@ -61,9 +61,9 @@ class XeRenderSystem {
     std::vector<VkDescriptorSet> descriptorSets;
 
     VkSampler textureSampler;
-    VkImageView textureImageView;
     
     VkPipelineLayout pipelineLayout;
+    std::unique_ptr<XeDescriptorPool> &xeDescriptorPool;
     std::unique_ptr<XeDescriptorSetLayout> xeDescriptorSetLayout;
 
 };

engine/xe_swap_chain.hpp

@@ -13,7 +13,7 @@ namespace xe {
 
 class XeSwapChain {
  public:
-  static constexpr int MAX_FRAMES_IN_FLIGHT = 3;
+  static constexpr int MAX_FRAMES_IN_FLIGHT = 2;
 
   XeSwapChain(XeDevice &deviceRef, VkExtent2D windowExtent);
   XeSwapChain(XeDevice &deviceRef, VkExtent2D windowExtent, std::shared_ptr<XeSwapChain> previous);

src/simple_renderer.cpp

@@ -7,12 +7,13 @@ SimpleRenderer::SimpleRenderer(xe::XeEngine &xeEngine, xe::XeImage *xeImage)
 
 void SimpleRenderer::render(std::vector<xe::XeGameObject> &gameObjects, xe::XeCamera &xeCamera, xe::XeImage *xeImage) {
 
+  xeRenderSystem.loadTexture(xeImage);
+
   xeRenderSystem.start();
 
   UniformBuffer ubo{};
   ubo.projectionView = xeCamera.getProjection() * xeCamera.getView();
   xeRenderSystem.loadUniformObject(&ubo);
-  xeRenderSystem.loadTexture(xeImage);
 
   for(auto &obj : gameObjects) {
     PushConstant pc{};