1 files changed, 133 insertions, 0 deletions
diff --git a/libs/surfaceflinger/GLExtensions.cpp b/libs/surfaceflinger/GLExtensions.cpp
new file mode 100644
index 0000000..7f4f9fc
--- /dev/null
+++ b/libs/surfaceflinger/GLExtensions.cpp
@@ -0,0 +1,133 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdint.h>
+
+#include "GLExtensions.h"
+
+namespace android {
+// ---------------------------------------------------------------------------
+
+ANDROID_SINGLETON_STATIC_INSTANCE( GLExtensions )
+
+GLExtensions::GLExtensions()
+    : mHaveTextureExternal(false),
+      mHaveNpot(false),
+      mHaveDirectTexture(false)
+{
+}
+
+void GLExtensions::initWithGLStrings(
+        GLubyte const* vendor,
+        GLubyte const* renderer,
+        GLubyte const* version,
+        GLubyte const* extensions,
+        char const* egl_vendor,
+        char const* egl_version,
+        char const* egl_extensions)
+{
+    mVendor     = (char const*)vendor;
+    mRenderer   = (char const*)renderer;
+    mVersion    = (char const*)version;
+    mExtensions = (char const*)extensions;
+    mEglVendor     = egl_vendor;
+    mEglVersion    = egl_version;
+    mEglExtensions = egl_extensions;
+
+    char const* curr = (char const*)extensions;
+    char const* head = curr;
+    do {
+        head = strchr(curr, ' ');
+        String8 s(curr, head ? head-curr : strlen(curr));
+        if (s.length()) {
+            mExtensionList.add(s);
+        }
+        curr = head+1;
+    } while (head);
+
+    curr = egl_extensions;
+    head = curr;
+    do {
+        head = strchr(curr, ' ');
+        String8 s(curr, head ? head-curr : strlen(curr));
+        if (s.length()) {
+            mExtensionList.add(s);
+        }
+        curr = head+1;
+    } while (head);
+
+#ifdef EGL_ANDROID_image_native_buffer
+    if (hasExtension("GL_OES_EGL_image") &&
+        (hasExtension("EGL_KHR_image_base") || hasExtension("EGL_KHR_image")) &&
+        hasExtension("EGL_ANDROID_image_native_buffer"))
+    {
+        mHaveDirectTexture = true;
+    }
+#else
+#warning "EGL_ANDROID_image_native_buffer not supported"
+#endif
+
+    if (hasExtension("GL_ARB_texture_non_power_of_two")) {
+        mHaveNpot = true;
+    }
+
+    if (hasExtension("GL_OES_texture_external")) {
+        mHaveTextureExternal = true;
+    } else if (strstr(mRenderer.string(), "Adreno")) {
+        // hack for Adreno 200
+        mHaveTextureExternal = true;
+    }
+}
+
+bool GLExtensions::hasExtension(char const* extension) const
+{
+    const String8 s(extension);
+    return mExtensionList.indexOf(s) >= 0;
+}
+
+char const* GLExtensions::getVendor() const {
+    return mVendor.string();
+}
+
+char const* GLExtensions::getRenderer() const {
+    return mRenderer.string();
+}
+
+char const* GLExtensions::getVersion() const {
+    return mVersion.string();
+}
+
+char const* GLExtensions::getExtension() const {
+    return mExtensions.string();
+}
+
+char const* GLExtensions::getEglVendor() const {
+    return mEglVendor.string();
+}
+
+char const* GLExtensions::getEglVersion() const {
+    return mEglVersion.string();
+}
+
+char const* GLExtensions::getEglExtension() const {
+    return mEglExtensions.string();
+}
+
+
+// ---------------------------------------------------------------------------
+}; // namespace android