1 files changed, 88 insertions, 0 deletions
diff --git a/tools/gfx/vulkan/vk-render-pass.cpp b/tools/gfx/vulkan/vk-render-pass.cpp
new file mode 100644
index 000000000..25a39c58a
--- /dev/null
+++ b/tools/gfx/vulkan/vk-render-pass.cpp
@@ -0,0 +1,88 @@
+// vk-render-pass.cpp
+#include "vk-render-pass.h"
+
+#include "vk-helper-functions.h"
+
+namespace gfx
+{
+
+using namespace Slang;
+
+namespace vk
+{
+
+IRenderPassLayout* RenderPassLayoutImpl::getInterface(const Guid& guid)
+{
+    if (guid == GfxGUID::IID_ISlangUnknown || guid == GfxGUID::IID_IRenderPassLayout)
+        return static_cast<IRenderPassLayout*>(this);
+    return nullptr;
+}
+
+RenderPassLayoutImpl::~RenderPassLayoutImpl()
+{
+    m_renderer->m_api.vkDestroyRenderPass(m_renderer->m_api.m_device, m_renderPass, nullptr);
+}
+
+Result RenderPassLayoutImpl::init(DeviceImpl* renderer, const IRenderPassLayout::Desc& desc)
+{
+    m_renderer = renderer;
+
+    // Create render pass using load/storeOp and layouts info from `desc`.
+    auto framebufferLayout = static_cast<FramebufferLayoutImpl*>(desc.framebufferLayout);
+    assert(desc.renderTargetCount == framebufferLayout->m_renderTargetCount);
+
+    // We need extra space if we have depth buffer
+    Array<VkAttachmentDescription, kMaxTargets> targetDescs;
+    targetDescs = framebufferLayout->m_targetDescs;
+    for (GfxIndex i = 0; i < desc.renderTargetCount; ++i)
+    {
+        VkAttachmentDescription& dst = targetDescs[i];
+        auto access = desc.renderTargetAccess[i];
+        // Fill in loadOp/storeOp and layout from desc.
+        dst.loadOp = translateLoadOp(access.loadOp);
+        dst.storeOp = translateStoreOp(access.storeOp);
+        dst.stencilLoadOp = translateLoadOp(access.stencilLoadOp);
+        dst.stencilStoreOp = translateStoreOp(access.stencilStoreOp);
+        dst.initialLayout = VulkanUtil::mapResourceStateToLayout(access.initialState);
+        dst.finalLayout = VulkanUtil::mapResourceStateToLayout(access.finalState);
+    }
+
+    if (framebufferLayout->m_hasDepthStencilTarget)
+    {
+        VkAttachmentDescription& dst = targetDescs[desc.renderTargetCount];
+        auto access = *desc.depthStencilAccess;
+        dst.loadOp = translateLoadOp(access.loadOp);
+        dst.storeOp = translateStoreOp(access.storeOp);
+        dst.stencilLoadOp = translateLoadOp(access.stencilLoadOp);
+        dst.stencilStoreOp = translateStoreOp(access.stencilStoreOp);
+        dst.initialLayout = VulkanUtil::mapResourceStateToLayout(access.initialState);
+        dst.finalLayout = VulkanUtil::mapResourceStateToLayout(access.finalState);
+    }
+
+    VkSubpassDescription subpassDesc = {};
+    subpassDesc.flags = 0;
+    subpassDesc.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS;
+    subpassDesc.inputAttachmentCount = 0u;
+    subpassDesc.pInputAttachments = nullptr;
+    subpassDesc.colorAttachmentCount = desc.renderTargetCount;
+    subpassDesc.pColorAttachments = framebufferLayout->m_colorReferences.getBuffer();
+    subpassDesc.pResolveAttachments = nullptr;
+    subpassDesc.pDepthStencilAttachment = framebufferLayout->m_hasDepthStencilTarget
+                                              ? &framebufferLayout->m_depthReference
+                                              : nullptr;
+    subpassDesc.preserveAttachmentCount = 0u;
+    subpassDesc.pPreserveAttachments = nullptr;
+
+    VkRenderPassCreateInfo renderPassCreateInfo = {};
+    renderPassCreateInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO;
+    renderPassCreateInfo.attachmentCount = (uint32_t)targetDescs.getCount();
+    renderPassCreateInfo.pAttachments = targetDescs.getBuffer();
+    renderPassCreateInfo.subpassCount = 1;
+    renderPassCreateInfo.pSubpasses = &subpassDesc;
+    SLANG_VK_RETURN_ON_FAIL(m_renderer->m_api.vkCreateRenderPass(
+        m_renderer->m_api.m_device, &renderPassCreateInfo, nullptr, &m_renderPass));
+    return SLANG_OK;
+}
+
+} // namespace vk
+} // namespace gfx