From 284ae60139eef1c69cd8981048dc77c4bd26631a Mon Sep 17 00:00:00 2001
From: moudgils <47460854+moudgils@users.noreply.github.com>
Date: Fri, 14 Jan 2022 10:34:57 -0800
Subject: [PATCH] Add missing 'precise' keyword for Vertex shaders (#6902)

Signed-off-by: moudgils <47460854+moudgils@users.noreply.github.com>
---
 .../Assets/Materials/Types/EnhancedPBR_DepthPass_WithPS.azsl  | 4 ++--
 .../Assets/Materials/Types/EnhancedPBR_ForwardPass.azsl       | 2 +-
 Gems/Atom/Feature/Common/Assets/Materials/Types/Skin.azsl     | 2 +-
 .../Types/StandardMultilayerPBR_DepthPass_WithPS.azsl         | 4 ++--
 .../Materials/Types/StandardMultilayerPBR_ForwardPass.azsl    | 2 +-
 .../TestData/Materials/Types/AutoBrick_ForwardPass.azsl       | 2 +-
 .../TestData/Materials/Types/MinimalPBR_ForwardPass.azsl      | 2 +-
 7 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/Gems/Atom/Feature/Common/Assets/Materials/Types/EnhancedPBR_DepthPass_WithPS.azsl b/Gems/Atom/Feature/Common/Assets/Materials/Types/EnhancedPBR_DepthPass_WithPS.azsl
index f2564cf10c..08642decc0 100644
--- a/Gems/Atom/Feature/Common/Assets/Materials/Types/EnhancedPBR_DepthPass_WithPS.azsl
+++ b/Gems/Atom/Feature/Common/Assets/Materials/Types/EnhancedPBR_DepthPass_WithPS.azsl
@@ -28,7 +28,7 @@ struct VSInput
  
 struct VSDepthOutput
 {
-    float4 m_position : SV_Position;
+    precise linear centroid float4 m_position : SV_Position;
     float2 m_uv[UvSetCount] : UV1;
 
     // only used for parallax depth calculation
@@ -62,7 +62,7 @@ VSDepthOutput MainVS(VSInput IN)
 
 struct PSDepthOutput
 {
-    float m_depth : SV_Depth;
+    precise float m_depth : SV_Depth;
 };
 
 PSDepthOutput MainPS(VSDepthOutput IN, bool isFrontFace : SV_IsFrontFace)
diff --git a/Gems/Atom/Feature/Common/Assets/Materials/Types/EnhancedPBR_ForwardPass.azsl b/Gems/Atom/Feature/Common/Assets/Materials/Types/EnhancedPBR_ForwardPass.azsl
index 0f9771e480..4b37f67930 100644
--- a/Gems/Atom/Feature/Common/Assets/Materials/Types/EnhancedPBR_ForwardPass.azsl
+++ b/Gems/Atom/Feature/Common/Assets/Materials/Types/EnhancedPBR_ForwardPass.azsl
@@ -67,7 +67,7 @@ struct VSInput
 struct VSOutput
 {
     // Base fields (required by the template azsli file)...
-    float4 m_position : SV_Position;
+    precise linear centroid float4 m_position : SV_Position;
     float3 m_normal: NORMAL;
     float3 m_tangent : TANGENT; 
     float3 m_bitangent : BITANGENT; 
diff --git a/Gems/Atom/Feature/Common/Assets/Materials/Types/Skin.azsl b/Gems/Atom/Feature/Common/Assets/Materials/Types/Skin.azsl
index 523353f8fa..00dee50c93 100644
--- a/Gems/Atom/Feature/Common/Assets/Materials/Types/Skin.azsl
+++ b/Gems/Atom/Feature/Common/Assets/Materials/Types/Skin.azsl
@@ -86,7 +86,7 @@ struct VSInput
 struct VSOutput
 {
     // Base fields (required by the template azsli file)...
-    float4 m_position : SV_Position;
+    precise linear centroid float4 m_position : SV_Position;
     float3 m_normal: NORMAL;
     float3 m_tangent : TANGENT; 
     float3 m_bitangent : BITANGENT; 
diff --git a/Gems/Atom/Feature/Common/Assets/Materials/Types/StandardMultilayerPBR_DepthPass_WithPS.azsl b/Gems/Atom/Feature/Common/Assets/Materials/Types/StandardMultilayerPBR_DepthPass_WithPS.azsl
index 39597e2bdd..7875457489 100644
--- a/Gems/Atom/Feature/Common/Assets/Materials/Types/StandardMultilayerPBR_DepthPass_WithPS.azsl
+++ b/Gems/Atom/Feature/Common/Assets/Materials/Types/StandardMultilayerPBR_DepthPass_WithPS.azsl
@@ -41,7 +41,7 @@ struct VSInput
  
 struct VSDepthOutput
 {
-    float4 m_position : SV_Position;
+    precise linear centroid float4 m_position : SV_Position;
     float2 m_uv[UvSetCount] : UV1;
 
     // only used for parallax depth calculation
@@ -88,7 +88,7 @@ VSDepthOutput MainVS(VSInput IN)
 
 struct PSDepthOutput
 {
-    float m_depth : SV_Depth;
+    precise float m_depth : SV_Depth;
 };
 
 PSDepthOutput MainPS(VSDepthOutput IN, bool isFrontFace : SV_IsFrontFace)
diff --git a/Gems/Atom/Feature/Common/Assets/Materials/Types/StandardMultilayerPBR_ForwardPass.azsl b/Gems/Atom/Feature/Common/Assets/Materials/Types/StandardMultilayerPBR_ForwardPass.azsl
index 8f58c6dd33..5b05e48d3b 100644
--- a/Gems/Atom/Feature/Common/Assets/Materials/Types/StandardMultilayerPBR_ForwardPass.azsl
+++ b/Gems/Atom/Feature/Common/Assets/Materials/Types/StandardMultilayerPBR_ForwardPass.azsl
@@ -80,7 +80,7 @@ struct VSInput
 struct VSOutput
 {
     // Base fields (required by the template azsli file)...
-    float4 m_position : SV_Position;
+    precise linear centroid float4 m_position : SV_Position;
     float3 m_normal: NORMAL;
     float3 m_tangent : TANGENT; 
     float3 m_bitangent : BITANGENT; 
diff --git a/Gems/Atom/TestData/TestData/Materials/Types/AutoBrick_ForwardPass.azsl b/Gems/Atom/TestData/TestData/Materials/Types/AutoBrick_ForwardPass.azsl
index 2dbba46d8b..05ce5f4774 100644
--- a/Gems/Atom/TestData/TestData/Materials/Types/AutoBrick_ForwardPass.azsl
+++ b/Gems/Atom/TestData/TestData/Materials/Types/AutoBrick_ForwardPass.azsl
@@ -28,7 +28,7 @@ struct VSInput
 
 struct VSOutput
 {
-    float4 m_position : SV_Position;
+    precise linear centroid float4 m_position : SV_Position;
     float3 m_normal: NORMAL;
     float3 m_tangent : TANGENT; 
     float3 m_bitangent : BITANGENT; 
diff --git a/Gems/Atom/TestData/TestData/Materials/Types/MinimalPBR_ForwardPass.azsl b/Gems/Atom/TestData/TestData/Materials/Types/MinimalPBR_ForwardPass.azsl
index 2f6f038e4b..fe9e4099d0 100644
--- a/Gems/Atom/TestData/TestData/Materials/Types/MinimalPBR_ForwardPass.azsl
+++ b/Gems/Atom/TestData/TestData/Materials/Types/MinimalPBR_ForwardPass.azsl
@@ -33,7 +33,7 @@ struct VSInput
 
 struct VSOutput
 {
-    float4 m_position : SV_Position;
+    precise linear centroid float4 m_position : SV_Position;
     float3 m_normal: NORMAL;
     float3 m_tangent : TANGENT; 
     float3 m_bitangent : BITANGENT;