From 8dd6adc5543de65f70b87dad0191e5e8ca82e6ec Mon Sep 17 00:00:00 2001
From: Gary Talent <gary@drinkingtea.net>
Date: Tue, 19 Dec 2023 23:06:14 -0600
Subject: [PATCH] [nostalgia/core] Specify a maximum for priority level

---
 src/nostalgia/modules/core/include/nostalgia/core/gfx.hpp | 3 +++
 src/nostalgia/modules/core/src/opengl/gfx.cpp             | 4 ++--
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/nostalgia/modules/core/include/nostalgia/core/gfx.hpp b/src/nostalgia/modules/core/include/nostalgia/core/gfx.hpp
index 5f246dd1..d47763cd 100644
--- a/src/nostalgia/modules/core/include/nostalgia/core/gfx.hpp
+++ b/src/nostalgia/modules/core/include/nostalgia/core/gfx.hpp
@@ -23,6 +23,9 @@ struct Sprite {
 	unsigned spriteShape = 0;
 	unsigned spriteSize = 0;
 	unsigned flipX = 0;
+	/**
+	 * Valid priorities: 0-3
+	 */
 	unsigned priority = 0;
 };
 
diff --git a/src/nostalgia/modules/core/src/opengl/gfx.cpp b/src/nostalgia/modules/core/src/opengl/gfx.cpp
index 30b20b44..5931c02c 100644
--- a/src/nostalgia/modules/core/src/opengl/gfx.cpp
+++ b/src/nostalgia/modules/core/src/opengl/gfx.cpp
@@ -113,7 +113,7 @@ static void setSpriteBufferObject(
 	y *= -ymod;
 	x -= 1.f;
 	y += 1.f - ymod;
-	auto const prif = static_cast<float>(priority) * 0.1f;
+	auto const prif = static_cast<float>(priority) * 0.01f;
 	auto const textureRowf = static_cast<float>(textureRow);
 	float const L = flipX ? 1 : 0;
 	float const R = flipX ? 0 : 1;
@@ -416,7 +416,7 @@ static void setSprite(
 				fY,
 				s.tileIdx + i,
 				s.flipX,
-				s.priority,
+				s.priority & 0b11,
 				vbo,
 				ebo);
 		++i;