commit 29c3f352797d9d2ddf055d8f888e7694ef8b3947
author Jesse Hall <jessehall@google.com> Tue May 21 15:36:55 2013 -0700
committer Jesse Hall <jessehall@google.com> Fri May 24 10:51:41 2013 -0700
tree 3d3e67fd90fa97610870da47505b300f480ab19f
parent 9e3cb55b8f6f007906872decfe3b8a2541e94dd2

Prevent opaque windows from making framebuffer translucent

To keep the code readable now that we have four different texenv
configurations, this change separates the decisions about what
configuration to use from the GL calls to set up the configuration.

Bug: 8963244
Change-Id: Ia07a306a7809ba8f93493d0160ccbd509e948581

services/surfaceflinger/SurfaceFlinger.cpp

diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 6ab33ef..fbd9f25 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -414,6 +414,22 @@
     return ctxt;
 }
 
+static GlesVersion parseGlesVersion(const char* str) {
+    int major, minor;
+    if (sscanf(str, "OpenGL ES-CM %d.%d", &major, &minor) != 2) {
+        ALOGW("Unable to parse GL_VERSION string: \"%s\"", str);
+        return GLES_VERSION_1_0;
+    }
+
+    if (major == 1 && minor == 0) return GLES_VERSION_1_0;
+    if (major == 1 && minor >= 1) return GLES_VERSION_1_1;
+    if (major == 2 && minor >= 0) return GLES_VERSION_2_0;
+    if (major == 3 && minor >= 0) return GLES_VERSION_3_0;
+
+    ALOGW("Unrecognized OpenGL ES version: %d.%d", major, minor);
+    return GLES_VERSION_1_0;
+}
+
 void SurfaceFlinger::initializeGL(EGLDisplay display) {
     GLExtensions& extensions(GLExtensions::getInstance());
     extensions.initWithGLStrings(
@@ -425,6 +441,8 @@
             eglQueryString(display, EGL_VERSION),
             eglQueryString(display, EGL_EXTENSIONS));
 
+    mGlesVersion = parseGlesVersion(extensions.getVersion());
+
     glGetIntegerv(GL_MAX_TEXTURE_SIZE, &mMaxTextureSize);
     glGetIntegerv(GL_MAX_VIEWPORT_DIMS, mMaxViewportDims);