From 398a896d6edcbf15a242683a1eb8fa1830334534 Mon Sep 17 00:00:00 2001
From: tildearrow <me@tildearrow.org>
Date: Sat, 3 Jun 2023 02:10:28 -0500
Subject: [PATCH] opengl32.lib doesn't provide glActiveTexture

---
 src/gui/render/renderGL.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/gui/render/renderGL.cpp b/src/gui/render/renderGL.cpp
index 1c6e2e2d3..f76ffaac0 100644
--- a/src/gui/render/renderGL.cpp
+++ b/src/gui/render/renderGL.cpp
@@ -29,6 +29,7 @@ PFNGLBINDBUFFERPROC furBindBuffer=NULL;
 PFNGLBUFFERDATAPROC furBufferData=NULL;
 PFNGLVERTEXATTRIBPOINTERPROC furVertexAttribPointer=NULL;
 PFNGLENABLEVERTEXATTRIBARRAYPROC furEnableVertexAttribArray=NULL;
+PFNGLACTIVETEXTUREPROC furActiveTexture=NULL;
 
 PFNGLCREATESHADERPROC furCreateShader=NULL;
 PFNGLSHADERSOURCEPROC furShaderSource=NULL;
@@ -163,7 +164,7 @@ void* FurnaceGUIRenderGL::createTexture(bool dynamic, int width, int height) {
   C(glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR));
   C(glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR));
   C(glTexImage2D(GL_TEXTURE_2D,0,GL_RGBA,width,height,0,GL_RGBA,GL_UNSIGNED_INT_8_8_8_8_REV,NULL));
-  C(glActiveTexture(GL_TEXTURE0));
+  C(furActiveTexture(GL_TEXTURE0));
   t->width=width;
   t->height=height;
   return t;
@@ -321,6 +322,7 @@ bool FurnaceGUIRenderGL::init(SDL_Window* win) {
   LOAD_PROC_MANDATORY(furBufferData,PFNGLBUFFERDATAPROC,"glBufferData");
   LOAD_PROC_MANDATORY(furVertexAttribPointer,PFNGLVERTEXATTRIBPOINTERPROC,"glVertexAttribPointer");
   LOAD_PROC_MANDATORY(furEnableVertexAttribArray,PFNGLENABLEVERTEXATTRIBARRAYPROC,"glEnableVertexAttribArray");
+  LOAD_PROC_MANDATORY(furActiveTexture,PFNGLACTIVETEXTUREPROC,"glActiveTexture");
 
   LOAD_PROC_OPTIONAL(furCreateShader,PFNGLCREATESHADERPROC,"glCreateShader");
   LOAD_PROC_OPTIONAL(furShaderSource,PFNGLSHADERSOURCEPROC,"glShaderSource");