From 190f114449402caf40d063f9df080a49b1f07bba Mon Sep 17 00:00:00 2001
From: Philip Rebohle <philip.rebohle@tu-dortmund.de>
Date: Wed, 16 Jan 2019 19:31:38 +0100
Subject: [PATCH] [dxvk] Add methods to check which dynamic states a pipeline
 uses

---
 src/dxvk/dxvk_graphics.h | 24 +++++++++++++++++++++++-
 src/dxvk/dxvk_util.cpp   |  8 ++++++++
 src/dxvk/dxvk_util.h     |  3 +++
 3 files changed, 34 insertions(+), 1 deletion(-)

diff --git a/src/dxvk/dxvk_graphics.h b/src/dxvk/dxvk_graphics.h
index 96e5c042..6e4acd6e 100644
--- a/src/dxvk/dxvk_graphics.h
+++ b/src/dxvk/dxvk_graphics.h
@@ -27,7 +27,7 @@ namespace dxvk {
 
   using DxvkGraphicsPipelineFlags = Flags<DxvkGraphicsPipelineFlag>;
 
-  
+
   /**
    * \brief Graphics pipeline state info
    * 
@@ -46,6 +46,28 @@ namespace dxvk {
     
     bool operator == (const DxvkGraphicsPipelineStateInfo& other) const;
     bool operator != (const DxvkGraphicsPipelineStateInfo& other) const;
+
+    bool useDynamicStencilRef() const {
+      return dsEnableStencilTest;
+    }
+
+    bool useDynamicDepthBias() const {
+      return rsDepthBiasEnable;
+    }
+
+    bool useDynamicBlendConstants() const {
+      bool result = false;
+      
+      for (uint32_t i = 0; i < MaxNumRenderTargets && !result; i++) {
+        result |= omBlendAttachments[i].blendEnable
+         && (util::isBlendConstantBlendFactor(omBlendAttachments[i].srcColorBlendFactor)
+          || util::isBlendConstantBlendFactor(omBlendAttachments[i].dstColorBlendFactor)
+          || util::isBlendConstantBlendFactor(omBlendAttachments[i].srcAlphaBlendFactor)
+          || util::isBlendConstantBlendFactor(omBlendAttachments[i].dstAlphaBlendFactor));
+      }
+
+      return result;
+    }
     
     DxvkBindingMask                     bsBindingMask;
     
diff --git a/src/dxvk/dxvk_util.cpp b/src/dxvk/dxvk_util.cpp
index a8782b1f..726d7acc 100644
--- a/src/dxvk/dxvk_util.cpp
+++ b/src/dxvk/dxvk_util.cpp
@@ -150,6 +150,14 @@ namespace dxvk::util {
   }
 
 
+  bool isBlendConstantBlendFactor(VkBlendFactor factor) {
+    return factor == VK_BLEND_FACTOR_CONSTANT_COLOR
+        || factor == VK_BLEND_FACTOR_CONSTANT_ALPHA
+        || factor == VK_BLEND_FACTOR_ONE_MINUS_CONSTANT_COLOR
+        || factor == VK_BLEND_FACTOR_ONE_MINUS_CONSTANT_ALPHA;
+  }
+
+
   bool isDualSourceBlendFactor(VkBlendFactor factor) {
     return factor == VK_BLEND_FACTOR_SRC1_COLOR
         || factor == VK_BLEND_FACTOR_SRC1_ALPHA
diff --git a/src/dxvk/dxvk_util.h b/src/dxvk/dxvk_util.h
index 73af2829..2137b544 100644
--- a/src/dxvk/dxvk_util.h
+++ b/src/dxvk/dxvk_util.h
@@ -212,6 +212,9 @@ namespace dxvk::util {
           VkComponentSwizzle          component,
           uint32_t                    identity);
   
+  bool isBlendConstantBlendFactor(
+          VkBlendFactor               factor);
+  
   bool isDualSourceBlendFactor(
           VkBlendFactor               factor);