From 9228338b39eafe1bae33699734b915d8e50909c4 Mon Sep 17 00:00:00 2001
From: SuperUserNameMan <9801802+SuperUserNameMan@users.noreply.github.com>
Date: Tue, 23 Jul 2024 17:57:58 +0200
Subject: [PATCH] `rcore_desktop_glfw.c` : flags to control texture font linear
 filtering - part 3

When in `FLAT_RESCALE_CONTENT` mode, the default "nearest pixel" filter of the texture font is ugly sometimes. So this change adds `FLAG_RESCALE_CONTENT_LINEAR` and `FLAG_TEXT_LINEAR_FILTER` to offer more control. `FLAG_TEXT_LINEAR_FILTER` can also be used to disable the linear filtering of `FLAG_WINDOW_HIGHDPI`.
---
 src/platforms/rcore_desktop_glfw.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/src/platforms/rcore_desktop_glfw.c b/src/platforms/rcore_desktop_glfw.c
index ed48512e6..b48843e62 100644
--- a/src/platforms/rcore_desktop_glfw.c
+++ b/src/platforms/rcore_desktop_glfw.c
@@ -418,6 +418,14 @@ void SetWindowState(unsigned int flags)
         glfwGetFramebufferSize(platform.handle, &fbWidth, &fbHeight);
         WindowSizeCallback(platform.handle, fbWidth, fbHeight);
     }
+
+    // State change: FLAG_TEXT_LINEAR_FILTER
+    if (((CORE.Window.flags & FLAG_TEXT_LINEAR_FILTER) != (flags & FLAG_TEXT_LINEAR_FILTER)) && ((flags & FLAG_TEXT_LINEAR_FILTER) > 0))
+    {
+        CORE.Window.flags |= FLAG_TEXT_LINEAR_FILTER;
+        rlTextureParameters(GetFontDefault().texture.id, RL_TEXTURE_MIN_FILTER, RL_TEXTURE_FILTER_LINEAR);
+        rlTextureParameters(GetFontDefault().texture.id, RL_TEXTURE_MAG_FILTER, RL_TEXTURE_FILTER_LINEAR);
+    }
 }
 
 // Clear window configuration state flags
@@ -541,6 +549,14 @@ void ClearWindowState(unsigned int flags)
         glfwGetFramebufferSize(platform.handle, &fbWidth, &fbHeight);
         WindowSizeCallback(platform.handle, fbWidth, fbHeight);
     }
+
+    // State change: FLAG_TEXT_LINEAR_FILTER
+    if (((CORE.Window.flags & FLAG_TEXT_LINEAR_FILTER) > 0) && ((flags & FLAG_TEXT_LINEAR_FILTER) > 0))
+    {
+        CORE.Window.flags &= ~FLAG_TEXT_LINEAR_FILTER;
+        rlTextureParameters(GetFontDefault().texture.id, RL_TEXTURE_MIN_FILTER, RL_TEXTURE_FILTER_NEAREST);
+        rlTextureParameters(GetFontDefault().texture.id, RL_TEXTURE_MAG_FILTER, RL_TEXTURE_FILTER_NEAREST);
+    }
 }
 
 // Set icon for window