From 898930563759e5b9c54e93f8bd34405c353faec9 Mon Sep 17 00:00:00 2001
From: PixelyIon <pixelyion@protonmail.com>
Date: Tue, 7 Dec 2021 02:06:00 +0530
Subject: [PATCH] Implement Host Vertex Buffer Translation

Uses the buffer cache to retrieve an equivalent host vertex buffer for a corresponding guest vertex buffer.
---
 .../skyline/gpu/interconnect/graphics_context.h  | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/app/src/main/cpp/skyline/gpu/interconnect/graphics_context.h b/app/src/main/cpp/skyline/gpu/interconnect/graphics_context.h
index 28b4c7ec..11b8df99 100644
--- a/app/src/main/cpp/skyline/gpu/interconnect/graphics_context.h
+++ b/app/src/main/cpp/skyline/gpu/interconnect/graphics_context.h
@@ -1060,6 +1060,22 @@ namespace skyline::gpu::interconnect {
             }
         }
 
+        BufferView *GetVertexBuffer(size_t index) {
+            auto &vertexBuffer{vertexBuffers.at(index)};
+            if (vertexBuffer.disabled || vertexBuffer.start > vertexBuffer.end)
+                return nullptr;
+            else if (vertexBuffer.view)
+                return &*vertexBuffer.view;
+
+            if (vertexBuffer.guest.mappings.empty()) {
+                auto mappings{channelCtx.asCtx->gmmu.TranslateRange(vertexBuffer.start, (vertexBuffer.end + 1) - vertexBuffer.start)};
+                vertexBuffer.guest.mappings.assign(mappings.begin(), mappings.end());
+            }
+
+            vertexBuffer.view = gpu.buffer.FindOrCreate(vertexBuffer.guest);
+            return vertexBuffer.view.get();
+        }
+
         /* Input Assembly */
       private:
         vk::PipelineInputAssemblyStateCreateInfo inputAssemblyState{};