Add internal API to query GL version number
Change-Id: Idc02efc237b8e97445a9bab05c291bf193c7f279
diff --git a/libs/hwui/Extensions.cpp b/libs/hwui/Extensions.cpp
index edc90fb..51aec8d 100644
--- a/libs/hwui/Extensions.cpp
+++ b/libs/hwui/Extensions.cpp
@@ -64,10 +64,32 @@
mHas4BitStencil = hasExtension("GL_OES_stencil4");
mExtensions = strdup(buffer);
+
+ const char* version = (const char*) glGetString(GL_VERSION);
+ mVersion = strdup(version);
+
+ // Section 6.1.5 of the OpenGL ES specification indicates the GL version
+ // string strictly follows this format:
+ //
+ // OpenGL<space>ES<space><version number><space><vendor-specific information>
+ //
+ // In addition section 6.1.5 describes the version number thusly:
+ //
+ // "The version number is either of the form major number.minor number or
+ // major number.minor number.release number, where the numbers all have one
+ // or more digits. The release number and vendor specific information are
+ // optional."
+
+ if (sscanf(version, "OpenGL ES %d.%d", &mVersionMajor, &mVersionMinor) !=2) {
+ // If we cannot parse the version number, assume OpenGL ES 2.0
+ mVersionMajor = 2;
+ mVersionMinor = 0;
+ }
}
Extensions::~Extensions() {
free(mExtensions);
+ free(mVersion);
}
///////////////////////////////////////////////////////////////////////////////
@@ -80,6 +102,7 @@
}
void Extensions::dump() const {
+ ALOGD("%s", mVersion);
ALOGD("Supported extensions:\n%s", mExtensions);
}