1 files changed, 203 insertions, 0 deletions
diff --git a/src/vk/render_pass.cpp b/src/vk/render_pass.cpp
new file mode 100644
index 0000000..799cde4
--- /dev/null
+++ b/src/vk/render_pass.cpp
@@ -0,0 +1,203 @@
+/*
+ * Copyright 2022-2023 Frederico de Oliveira Linhares
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "render_pass.hpp"
+
+#include <array>
+
+#include "../core.hpp"
+
+namespace
+{
+
+void
+load_3d(void *obj)
+{
+  auto self = static_cast<VK::RenderPass*>(obj);
+
+  std::array<VkAttachmentDescription, 2> attachments{};
+  // Color attachment.
+  attachments[0].flags = 0;
+  attachments[0].format = cg_core.vk_swapchain->image_format;
+  attachments[0].samples = VK_SAMPLE_COUNT_1_BIT;
+  attachments[0].loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
+  attachments[0].storeOp = VK_ATTACHMENT_STORE_OP_STORE;
+  attachments[0].stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
+  attachments[0].stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
+  attachments[0].initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
+  attachments[0].finalLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
+  // Depth attachment.
+  attachments[1].flags = 0;
+  attachments[1].format = VK_FORMAT_D32_SFLOAT;
+  attachments[1].samples = VK_SAMPLE_COUNT_1_BIT;
+  attachments[1].loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
+  attachments[1].storeOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
+  attachments[1].stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
+  attachments[1].stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
+  attachments[1].initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
+  attachments[1].finalLayout =
+      VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
+
+  VkAttachmentReference color_attachment_ref{};
+  color_attachment_ref.attachment = 0;
+  color_attachment_ref.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
+  VkAttachmentReference depth_attachment_ref{};
+  depth_attachment_ref.attachment = 1;
+  depth_attachment_ref.layout =
+    VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
+
+  VkSubpassDescription subpass = {};
+  subpass.flags = 0;
+  subpass.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS;
+  subpass.inputAttachmentCount = 0;
+  subpass.pInputAttachments = nullptr;
+  subpass.colorAttachmentCount = 1;
+  subpass.pColorAttachments = &color_attachment_ref;
+  subpass.pResolveAttachments = nullptr;
+  subpass.pDepthStencilAttachment = &depth_attachment_ref;
+  subpass.preserveAttachmentCount = 0;
+  subpass.pPreserveAttachments = nullptr;
+
+  VkSubpassDependency dependency = {};
+  dependency.srcSubpass = VK_SUBPASS_EXTERNAL;
+  dependency.dstSubpass = 0;
+  dependency.srcStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT |
+    VK_PIPELINE_STAGE_EARLY_FRAGMENT_TESTS_BIT;
+  dependency.srcAccessMask = 0;
+  dependency.dstStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT |
+    VK_PIPELINE_STAGE_EARLY_FRAGMENT_TESTS_BIT;
+  dependency.dstAccessMask = VK_ACCESS_COLOR_ATTACHMENT_READ_BIT |
+    VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_WRITE_BIT |
+    VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
+
+  VkRenderPassCreateInfo render_pass_info{};
+  render_pass_info.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO;
+  render_pass_info.pNext = nullptr;
+  render_pass_info.flags = 0;
+  render_pass_info.attachmentCount = attachments.size();
+  render_pass_info.pAttachments = attachments.data();
+  render_pass_info.subpassCount = 1;
+  render_pass_info.pSubpasses = &subpass;
+  render_pass_info.dependencyCount = 1;
+  render_pass_info.pDependencies = &dependency;
+
+  if(vkCreateRenderPass(
+       cg_core.vk_device_with_swapchain->device, &render_pass_info, nullptr,
+       &self->pipeline_3d) != VK_SUCCESS)
+    throw CommandError{"Failed to create Vulkan Render Pass 3D."};
+}
+
+void
+unload_3d(void *obj)
+{
+  auto self = static_cast<VK::RenderPass*>(obj);
+
+  vkDestroyRenderPass(
+    cg_core.vk_device_with_swapchain->device, self->pipeline_3d, nullptr);
+}
+
+void
+load_2d(void *obj)
+{
+  auto self = static_cast<VK::RenderPass*>(obj);
+
+  std::array<VkAttachmentDescription, 1> attachments{};
+  // Color attachment.
+  attachments[0].flags = 0;
+  attachments[0].format = cg_core.vk_swapchain->image_format;
+  attachments[0].samples = VK_SAMPLE_COUNT_1_BIT;
+  attachments[0].loadOp = VK_ATTACHMENT_LOAD_OP_LOAD;
+  attachments[0].storeOp = VK_ATTACHMENT_STORE_OP_STORE;
+  attachments[0].stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
+  attachments[0].stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
+  attachments[0].initialLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
+  attachments[0].finalLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR;
+
+  VkAttachmentReference color_attachment_ref{};
+  color_attachment_ref.attachment = 0;
+  color_attachment_ref.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
+
+  VkSubpassDescription subpass{};
+  subpass.flags = 0;
+  subpass.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS;
+  subpass.inputAttachmentCount = 0;
+  subpass.pInputAttachments = nullptr;
+  subpass.colorAttachmentCount = 1;
+  subpass.pColorAttachments = &color_attachment_ref;
+  subpass.pResolveAttachments = nullptr;
+  subpass.pDepthStencilAttachment = nullptr;
+  subpass.preserveAttachmentCount = 0;
+  subpass.pPreserveAttachments = nullptr;
+
+  VkSubpassDependency dependency{};
+  dependency.srcSubpass = VK_SUBPASS_EXTERNAL;
+  dependency.dstSubpass = 0;
+  dependency.srcStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT |
+    VK_PIPELINE_STAGE_EARLY_FRAGMENT_TESTS_BIT;
+  dependency.srcAccessMask = 0;
+  dependency.dstStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT |
+    VK_PIPELINE_STAGE_EARLY_FRAGMENT_TESTS_BIT;
+  dependency.dstAccessMask = VK_ACCESS_COLOR_ATTACHMENT_READ_BIT |
+    VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_WRITE_BIT |
+    VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
+
+  VkRenderPassCreateInfo render_pass_info{};
+  render_pass_info.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO;
+  render_pass_info.pNext = nullptr;
+  render_pass_info.flags = 0;
+  render_pass_info.attachmentCount = attachments.size();
+  render_pass_info.pAttachments = attachments.data();
+  render_pass_info.subpassCount = 1;
+  render_pass_info.pSubpasses = &subpass;
+  render_pass_info.dependencyCount = 1;
+  render_pass_info.pDependencies = &dependency;
+
+  if(vkCreateRenderPass(
+       cg_core.vk_device_with_swapchain->device, &render_pass_info,
+       nullptr, &self->pipeline_2d) != VK_SUCCESS)
+    throw CommandError{"Failed to create Vulkan Render Pass 2D."};
+}
+
+void
+unload_2d(void *obj)
+{
+  auto self = static_cast<VK::RenderPass*>(obj);
+
+  vkDestroyRenderPass(
+    cg_core.vk_device_with_swapchain->device, self->pipeline_2d, nullptr);
+}
+
+const CommandChain loader{
+  {&load_3d, &unload_3d},
+  {&load_2d, &unload_2d}
+};
+
+}
+
+namespace VK
+{
+
+RenderPass::RenderPass()
+{
+  loader.execute(this);
+}
+
+RenderPass::~RenderPass()
+{
+  loader.revert(this);
+}
+
+}