From 8882e5cc84589f1caaef25c32a2d9e66beb764d4 Mon Sep 17 00:00:00 2001
From: Alberto Mardegan <mardy@users.sourceforge.net>
Date: Tue, 11 Aug 2026 20:18:19 +0300
Subject: [PATCH] functions: add a couple of missing stubs

The SDL3 test program testgl[1] loads all the GL functions declared in
the render backend[2] and fails to start if any of these fail.

Exporting these two functions allows the testgl program to run.

[1]: https://github.com/libsdl-org/SDL/blob/main/test/testgl.c
[2]: https://github.com/libsdl-org/SDL/blob/main/src/render/opengl/SDL_glfuncs.h
---
 src/functions.c | 2 ++
 src/gc_gl.c     | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/src/functions.c b/src/functions.c
index 457dfed..832f013 100644
--- a/src/functions.c
+++ b/src/functions.c
@@ -51,7 +51,9 @@ static const OgxProcMap s_proc_map[] = {
     PROC(glBindBuffer), /* OpenGL 1.5 */
     PROC(glBindTexture),
     PROC(glBitmap),
+    PROC(glBlendEquation),
     PROC(glBlendFunc),
+    PROC(glBlendFuncSeparate),
     PROC(glBufferData), /* OpenGL 1.5 */
     PROC(glBufferSubData), /* OpenGL 1.5 */
     PROC(glCallList),
diff --git a/src/gc_gl.c b/src/gc_gl.c
index 2af568e..9424ffc 100644
--- a/src/gc_gl.c
+++ b/src/gc_gl.c
@@ -2826,6 +2826,8 @@ void glOrtho(GLdouble left, GLdouble right, GLdouble bottom, GLdouble top, GLdou
 // NOT GOING TO IMPLEMENT
 
 void glBlendEquation(GLenum mode) {}
+void glBlendFuncSeparate(GLenum sfactorRGB, GLenum dfactorRGB,
+                         GLenum sfactorAlpha, GLenum dfactorAlpha) {}
 void glShadeModel(GLenum mode) {}  // In theory we don't have GX equivalent?
 void glHint(GLenum target, GLenum mode) {}