From bf912d0a5f04c0ea5edd82363b6b564b899c5ccf Mon Sep 17 00:00:00 2001
From: Philip Rebohle <philip.rebohle@tu-dortmund.de>
Date: Mon, 30 Jul 2018 20:24:53 +0200
Subject: [PATCH] [d3d11] Create shader constant buffer if necessary

---
 src/d3d11/d3d11_shader.cpp | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/src/d3d11/d3d11_shader.cpp b/src/d3d11/d3d11_shader.cpp
index c33695748..f5177182e 100644
--- a/src/d3d11/d3d11_shader.cpp
+++ b/src/d3d11/d3d11_shader.cpp
@@ -85,6 +85,28 @@ namespace dxvk {
       if (readStream)
         m_shader->read(readStream);
     }
+
+    // Create shader constant buffer if necessary
+    if (m_shader->shaderConstants().data() != nullptr) {
+      DxvkBufferCreateInfo info;
+      info.size   = m_shader->shaderConstants().sizeInBytes();
+      info.usage  = VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT;
+      info.stages = util::pipelineStages(m_shader->stage())
+                  | VK_PIPELINE_STAGE_HOST_BIT;
+      info.access = VK_ACCESS_UNIFORM_READ_BIT
+                  | VK_ACCESS_HOST_WRITE_BIT;
+      
+      VkMemoryPropertyFlags memFlags
+        = VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT
+        | VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT
+        | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT;
+      
+      m_buffer = pDevice->GetDXVKDevice()->createBuffer(info, memFlags);
+
+      std::memcpy(m_buffer->mapPtr(0),
+        m_shader->shaderConstants().data(),
+        m_shader->shaderConstants().sizeInBytes());
+    }
   }