From 31b8d0aff84c89b3da6d9a1b07204bab14a13b75 Mon Sep 17 00:00:00 2001
From: FunkyFr3sh <cc.red.alert.1@googlemail.com>
Date: Tue, 10 Dec 2024 20:43:06 +0100
Subject: [PATCH] #364 add hack for Intel HD 4000 driver Build 10.18.10.4252
 bug - disable multipass shader

---
 inc/opengl_utils.h |  1 +
 src/opengl_utils.c |  2 ++
 src/render_ogl.c   | 20 ++++++++++++++++++++
 3 files changed, 23 insertions(+)

diff --git a/inc/opengl_utils.h b/inc/opengl_utils.h
index 4449951..d84dd20 100644
--- a/inc/opengl_utils.h
+++ b/inc/opengl_utils.h
@@ -115,5 +115,6 @@ extern HMODULE g_oglu_hmodule;
 extern BOOL g_oglu_got_version2;
 extern BOOL g_oglu_got_version3;
 extern char g_oglu_version[];
+extern char g_oglu_version_long[];
 
 #endif
diff --git a/src/opengl_utils.c b/src/opengl_utils.c
index 8062fdd..e315b15 100644
--- a/src/opengl_utils.c
+++ b/src/opengl_utils.c
@@ -95,6 +95,7 @@ HMODULE g_oglu_hmodule;
 BOOL g_oglu_got_version2;
 BOOL g_oglu_got_version3;
 char g_oglu_version[128];
+char g_oglu_version_long[128];
 
 BOOL oglu_load_dll()
 {
@@ -201,6 +202,7 @@ void oglu_init()
     if (glversion)
     {
         strncpy(g_oglu_version, glversion, sizeof(g_oglu_version) - 1);
+        strncpy(g_oglu_version_long, glversion, sizeof(g_oglu_version_long) - 1);
         g_oglu_version[sizeof(g_oglu_version) - 1] = '\0'; /* strncpy fix */
         strtok(g_oglu_version, " ");
     }
diff --git a/src/render_ogl.c b/src/render_ogl.c
index efde47f..1630fc5 100644
--- a/src/render_ogl.c
+++ b/src/render_ogl.c
@@ -248,6 +248,26 @@ static void ogl_build_programs()
                 _snprintf(shader_path, sizeof(shader_path) - 1, "%s%s", g_config.dll_path, g_config.shader);
             }
 
+
+            /* Hack for Intel HD 4000 driver bug - disable multipass shader */
+
+            if (_stricmp(g_oglu_version_long, "4.0.0 - Build 10.18.10.4252") == 0)
+            {
+                char shader_path_tmp[MAX_PATH] = { 0 };
+                strncpy(shader_path_tmp, shader_path, sizeof(shader_path_tmp));
+
+                if (strlen(shader_path_tmp) <= sizeof(shader_path_tmp) - 8)
+                {
+                    strcat(shader_path_tmp, ".pass1");
+
+                    if (FILE_EXISTS(shader_path_tmp))
+                    {
+                        shader_path[0] = 0;
+                        g_config.shader[0] = 0;
+                    }
+                }
+            }
+
             /* detect common upscaling shaders and disable them if no upscaling is required */
 
             BOOL is_upscaler =