commit 7cc58921668c8b7d397ffd40801729c708f54ccc
author Yiwei Zhang <zzyiwei@google.com> Wed Oct 10 11:37:43 2018 -0700
committer Yiwei Zhang <zzyiwei@google.com> Thu Oct 11 01:15:20 2018 +0000
tree f6d7736eccdb8d069089d9f7406f18c2832e0ae9
parent a3ccde8b997f3644f134996ae3e4789a6fa8c4bc

Make a GLESv1 only entries for GLESv1 driver loading

This change creates a separate entry list for initializing gles1 apis
from the driver. With this change, the gl driver loading time for one
particular device reduced from ~180ms to ~40ms.

Bug: b/117526831
Test: dEQP-EGL.* and systrace on multiple devices
Change-Id: Ic2f6f1b8f4cd8f17db64b6e288769e2d6a7859eb

opengl/libs/EGL/Loader.cpp

diff --git a/opengl/libs/EGL/Loader.cpp b/opengl/libs/EGL/Loader.cpp
index 1421a48..f8cfacb 100644
--- a/opengl/libs/EGL/Loader.cpp
+++ b/opengl/libs/EGL/Loader.cpp
@@ -273,6 +273,7 @@
 
 void Loader::init_api(void* dso,
         char const * const * api,
+        char const * const * ref_api,
         __eglMustCastToProperFunctionPointerType* curr,
         getProcAddressType getProcAddress)
 {
@@ -282,6 +283,15 @@
     char scrap[SIZE];
     while (*api) {
         char const * name = *api;
+        if (ref_api) {
+            char const * ref_name = *ref_api;
+            if (std::strcmp(name, ref_name) != 0) {
+                *curr++ = nullptr;
+                ref_api++;
+                continue;
+            }
+        }
+
         __eglMustCastToProperFunctionPointerType f =
             (__eglMustCastToProperFunctionPointerType)dlsym(dso, name);
         if (f == nullptr) {
@@ -326,6 +336,7 @@
         }
         *curr++ = f;
         api++;
+        if (ref_api) ref_api++;
     }
 }
 
@@ -648,14 +659,14 @@
     }
 
     if (mask & GLESv1_CM) {
-        init_api(dso, gl_names,
+        init_api(dso, gl_names_1, gl_names,
             (__eglMustCastToProperFunctionPointerType*)
                 &cnx->hooks[egl_connection_t::GLESv1_INDEX]->gl,
             getProcAddress);
     }
 
     if (mask & GLESv2) {
-      init_api(dso, gl_names,
+        init_api(dso, gl_names, nullptr,
             (__eglMustCastToProperFunctionPointerType*)
                 &cnx->hooks[egl_connection_t::GLESv2_INDEX]->gl,
             getProcAddress);