From 3a672387e425db378e85622f9a7630d3e46da6c6 Mon Sep 17 00:00:00 2001
From: Sasha Szpakowski <slime73@gmail.com>
Date: Sun, 14 Apr 2024 11:31:46 -0300
Subject: [PATCH] Error if Texture:generateMipmaps is called on an active
 canvas.

---
 src/modules/graphics/Texture.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/modules/graphics/Texture.cpp b/src/modules/graphics/Texture.cpp
index edae44ff7..8fe4cb814 100644
--- a/src/modules/graphics/Texture.cpp
+++ b/src/modules/graphics/Texture.cpp
@@ -701,6 +701,10 @@ void Texture::generateMipmaps()
 	if (!supportsGenerateMipmaps(err))
 		throw love::Exception("%s", err);
 
+	auto gfx = Module::getInstance<Graphics>(Module::M_GRAPHICS);
+	if (gfx != nullptr && gfx->isRenderTargetActive(this))
+		throw love::Exception("generateMipmaps cannot be called on this Texture while it's an active render target.");
+
 	generateMipmapsInternal();
 }