From b64b0df0814a5e7f029ad5465ee71ea5c045c8f3 Mon Sep 17 00:00:00 2001
From: Imre Deak <imre.deak@intel.com>
Date: Mon, 2 Apr 2012 16:47:48 +0300
Subject: [PATCH] gles: fix lookup for GLESv1 functions
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Get the function from the GLESv1 library in case it's not found in
GLESv2.

Signed-off-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: José Fonseca <jose.r.fonseca@gmail.com>
---
 glproc_egl.cpp | 37 +++++++++++++++++++++++++++++--------
 1 file changed, 29 insertions(+), 8 deletions(-)

diff --git a/glproc_egl.cpp b/glproc_egl.cpp
index 53dd714..8a0fb34 100644
--- a/glproc_egl.cpp
+++ b/glproc_egl.cpp
@@ -78,24 +78,45 @@ __getPublicProcAddress(const char *procName)
      * Android does not support LD_PRELOAD.  It is assumed that applications
      * are explicitely loading egltrace.so.
      */
-    void *lib = NULL;
+
     if (procName[0] == 'e' && procName[1] == 'g' && procName[2] == 'l') {
         static void *libEGL = NULL;
         if (!libEGL) {
             libEGL = dlopen("libEGL.so", RTLD_LOCAL | RTLD_LAZY);
+            if (!libEGL) {
+                return NULL;
+            }
         }
-        lib = libEGL;
-    } else if (procName[0] == 'g' && procName[1] == 'l') {
-        /* TODO: Support libGLESv1_CM.so too somehow. */
+        return dlsym(libEGL, procName);
+    }
+
+    if (procName[0] == 'g' && procName[1] == 'l') {
+        /* TODO: Use GLESv1/GLESv2 on a per-context basis. */
+        static void *sym = NULL;
+
         static void *libGLESv2 = NULL;
         if (!libGLESv2) {
             libGLESv2 = dlopen("libGLESv2.so", RTLD_LOCAL | RTLD_LAZY);
         }
-        lib = libGLESv2;
-    }
-    if (lib) {
-        return dlsym(lib, procName);
+        if (libGLESv2) {
+            sym = dlsym(libGLESv2, procName);
+        }
+        if (sym) {
+            return sym;
+        }
+
+        static void *libGLESv1 = NULL;
+        if (!libGLESv1) {
+            libGLESv1 = dlopen("libGLESv1_CM.so", RTLD_LOCAL | RTLD_LAZY);
+        }
+        if (libGLESv1) {
+            sym = dlsym(libGLESv1, procName);
+        }
+        if (sym) {
+            return sym;
+        }
     }
+
     return NULL;
 #else
     return dlsym(RTLD_NEXT, procName);
-- 
2.43.0