From 48548eb8943239665815f8e9461330c79be27d4e Mon Sep 17 00:00:00 2001
From: Philip Rebohle <philip.rebohle@tu-dortmund.de>
Date: Thu, 13 Dec 2018 12:17:09 +0100
Subject: [PATCH] [dxbc] Add useRawSsbo option

ENabled when we can replace texel buffers for raw and structured
buffers with raw SSBOs.
---
 src/dxbc/dxbc_options.cpp | 2 ++
 src/dxbc/dxbc_options.h   | 4 ++++
 2 files changed, 6 insertions(+)

diff --git a/src/dxbc/dxbc_options.cpp b/src/dxbc/dxbc_options.cpp
index ac2e4373..05f51c08 100644
--- a/src/dxbc/dxbc_options.cpp
+++ b/src/dxbc/dxbc_options.cpp
@@ -21,6 +21,8 @@ namespace dxvk {
       = (devInfo.coreSubgroup.subgroupSize >= 4)
      && (devInfo.coreSubgroup.supportedStages     & VK_SHADER_STAGE_FRAGMENT_BIT)
      && (devInfo.coreSubgroup.supportedOperations & VK_SUBGROUP_FEATURE_BALLOT_BIT);
+    useRawSsbo
+      = (devInfo.core.properties.limits.minStorageBufferOffsetAlignment <= sizeof(uint32_t));
     
     zeroInitWorkgroupMemory = options.zeroInitWorkgroupMemory;
     
diff --git a/src/dxbc/dxbc_options.h b/src/dxbc/dxbc_options.h
index 8d85d5ed..85cbf327 100644
--- a/src/dxbc/dxbc_options.h
+++ b/src/dxbc/dxbc_options.h
@@ -17,6 +17,10 @@ namespace dxvk {
     /// shader invocations if derivatives remain valid.
     bool useSubgroupOpsForEarlyDiscard = false;
 
+    /// Use SSBOs instead of texel buffers
+    /// for raw and structured buffers.
+    bool useRawSsbo = false;
+
     /// Clear thread-group shared memory to zero
     bool zeroInitWorkgroupMemory = false;
   };