From 8935ab28e96b7406125f50a7f7f8b8dea455a6d4 Mon Sep 17 00:00:00 2001
From: chyyran <ronny@ronnychan.ca>
Date: Sun, 4 Dec 2022 22:36:14 -0500
Subject: [PATCH] rt: allow specifying frame_direction

---
 librashader-runtime-d3d11/src/filter_chain.rs          | 5 +++--
 librashader-runtime-d3d11/src/options.rs               | 1 +
 librashader-runtime-gl/src/filter_chain/filter_impl.rs | 6 +++---
 librashader-runtime-gl/src/options.rs                  | 1 +
 4 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/librashader-runtime-d3d11/src/filter_chain.rs b/librashader-runtime-d3d11/src/filter_chain.rs
index 0375ffb..193cead 100644
--- a/librashader-runtime-d3d11/src/filter_chain.rs
+++ b/librashader-runtime-d3d11/src/filter_chain.rs
@@ -485,6 +485,7 @@ impl FilterChainD3D11 {
             return Ok(());
         }
 
+        let frame_direction = options.map(|f| f.frame_direction).unwrap_or(1);
         let filter = passes[0].config.filter;
         let wrap_mode = passes[0].config.wrap_mode;
 
@@ -551,7 +552,7 @@ impl FilterChainD3D11 {
                 } else {
                     frame_count
                 } as u32,
-                1,
+                frame_direction,
                 viewport,
                 &original,
                 &source,
@@ -581,7 +582,7 @@ impl FilterChainD3D11 {
                 } else {
                     frame_count
                 } as u32,
-                1,
+                frame_direction,
                 viewport,
                 &original,
                 &source,
diff --git a/librashader-runtime-d3d11/src/options.rs b/librashader-runtime-d3d11/src/options.rs
index 77b6836..571cdb2 100644
--- a/librashader-runtime-d3d11/src/options.rs
+++ b/librashader-runtime-d3d11/src/options.rs
@@ -2,6 +2,7 @@
 #[derive(Debug, Clone)]
 pub struct FrameOptionsD3D11 {
     pub clear_history: bool,
+    pub frame_direction: i32,
 }
 
 #[repr(C)]
diff --git a/librashader-runtime-gl/src/filter_chain/filter_impl.rs b/librashader-runtime-gl/src/filter_chain/filter_impl.rs
index 7abe17c..369a288 100644
--- a/librashader-runtime-gl/src/filter_chain/filter_impl.rs
+++ b/librashader-runtime-gl/src/filter_chain/filter_impl.rs
@@ -437,6 +437,7 @@ impl<T: GLInterface> FilterChainImpl<T> {
         if passes.is_empty() {
             return Ok(());
         }
+        let frame_direction = options.map(|f| f.frame_direction).unwrap_or(1);
 
         // do not need to rebind FBO 0 here since first `draw` will
         // bind automatically.
@@ -509,8 +510,7 @@ impl<T: GLInterface> FilterChainImpl<T> {
                 } else {
                     count
                 } as u32,
-                // todo: put this in options
-                1,
+                frame_direction,
                 viewport,
                 &original,
                 &source,
@@ -536,7 +536,7 @@ impl<T: GLInterface> FilterChainImpl<T> {
                 } else {
                     count
                 } as u32,
-                1,
+                frame_direction,
                 viewport,
                 &original,
                 &source,
diff --git a/librashader-runtime-gl/src/options.rs b/librashader-runtime-gl/src/options.rs
index 2f67d13..2bf869d 100644
--- a/librashader-runtime-gl/src/options.rs
+++ b/librashader-runtime-gl/src/options.rs
@@ -2,6 +2,7 @@
 #[derive(Debug, Clone)]
 pub struct FrameOptionsGL {
     pub clear_history: bool,
+    pub frame_direction: i32,
 }
 
 #[repr(C)]