From 551b7119432817245f477908279ea2d7aa62a3e1 Mon Sep 17 00:00:00 2001
From: Connor Fitzgerald <connorwadefitzgerald@gmail.com>
Date: Mon, 9 Aug 2021 22:10:08 -0400
Subject: [PATCH] [spv-in] use grad image operand

---
 src/front/spv/image.rs | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/src/front/spv/image.rs b/src/front/spv/image.rs
index aee6359999..d7fe88cc3e 100644
--- a/src/front/spv/image.rs
+++ b/src/front/spv/image.rs
@@ -420,6 +420,17 @@ impl<I: Iterator<Item = u32>> super::Parser<I> {
                     level = crate::SampleLevel::Exact(lod_handle);
                     words_left -= 1;
                 }
+                spirv::ImageOperands::GRAD => {
+                    let grad_x_expr = self.next()?;
+                    let grad_x_handle = self.lookup_expression.lookup(grad_x_expr)?.handle;
+                    let grad_y_expr = self.next()?;
+                    let grad_y_handle = self.lookup_expression.lookup(grad_y_expr)?.handle;
+                    level = crate::SampleLevel::Gradient {
+                        x: grad_x_handle,
+                        y: grad_y_handle,
+                    };
+                    words_left -= 2;
+                }
                 spirv::ImageOperands::CONST_OFFSET => {
                     let offset_constant = self.next()?;
                     let offset_handle = self.lookup_constant.lookup(offset_constant)?.handle;