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Check GL extension is supported before using it in glwallpaper

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glwallpaper requests a GL context with low priority, however this
feature is a GL extension that may not be available in the GL
implementation (swiftshader, for example).

Bug: 138834844
Test: run cuttlefish locally
Merged-In: I72edeb0f4dc03e51bda22209415604e752c18e52
Change-Id: I72edeb0f4dc03e51bda22209415604e752c18e52
This commit is contained in:
Jorge E. Moreira
2019-09-26 14:11:12 -07:00
parent 4616df8a03
commit a03aae8d03
1 changed files with 25 additions and 2 deletions
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27
packages/SystemUI/src/com/android/systemui/glwallpaper/EglHelper.java
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@@ -22,6 +22,7 @@ import static android.opengl.EGL14.EGL_CONFIG_CAVEAT;
import static android.opengl.EGL14.EGL_CONTEXT_CLIENT_VERSION;
import static android.opengl.EGL14.EGL_DEFAULT_DISPLAY;
import static android.opengl.EGL14.EGL_DEPTH_SIZE;
import static android.opengl.EGL14.EGL_EXTENSIONS;
import static android.opengl.EGL14.EGL_GREEN_SIZE;
import static android.opengl.EGL14.EGL_NONE;
import static android.opengl.EGL14.EGL_NO_CONTEXT;
@@ -41,6 +42,7 @@ import static android.opengl.EGL14.eglGetDisplay;
import static android.opengl.EGL14.eglGetError;
import static android.opengl.EGL14.eglInitialize;
import static android.opengl.EGL14.eglMakeCurrent;
import static android.opengl.EGL14.eglQueryString;
import static android.opengl.EGL14.eglSwapBuffers;
import static android.opengl.EGL14.eglTerminate;
@@ -63,6 +65,7 @@ public class EglHelper {
// Below two constants make drawing at low priority, so other things can preempt our drawing.
private static final int EGL_CONTEXT_PRIORITY_LEVEL_IMG = 0x3100;
private static final int EGL_CONTEXT_PRIORITY_LOW_IMG = 0x3103;
private static final String EGL_IMG_CONTEXT_PRIORITY = "EGL_IMG_context_priority";
private EGLDisplay mEglDisplay;
private EGLConfig mEglConfig;
@@ -70,6 +73,7 @@ public class EglHelper {
private EGLSurface mEglSurface;
private final int[] mEglVersion = new int[2];
private boolean mEglReady;
private boolean mContextPrioritySupported;
/**
* Initialize EGL and prepare EglSurface.
@@ -105,10 +109,22 @@ public class EglHelper {
return false;
}
mContextPrioritySupported = isContextPrioritySuppported();
mEglReady = true;
return true;
}
private boolean isContextPrioritySuppported() {
String[] extensions = eglQueryString(mEglDisplay, EGL_EXTENSIONS).split(" ");
for (String extension : extensions) {
if (extension.equals(EGL_IMG_CONTEXT_PRIORITY)) {
return true;
}
}
return false;
}
private EGLConfig chooseEglConfig() {
int[] configsCount = new int[1];
EGLConfig[] configs = new EGLConfig[1];
@@ -190,8 +206,15 @@ public class EglHelper {
* @return true if EglContext is ready.
*/
public boolean createEglContext() {
int[] attrib_list = new int[] {EGL_CONTEXT_CLIENT_VERSION, 2,
EGL_CONTEXT_PRIORITY_LEVEL_IMG, EGL_CONTEXT_PRIORITY_LOW_IMG, EGL_NONE};
int[] attrib_list = new int[5];
int idx = 0;
attrib_list[idx++] = EGL_CONTEXT_CLIENT_VERSION;
attrib_list[idx++] = 2;
if (mContextPrioritySupported) {
attrib_list[idx++] = EGL_CONTEXT_PRIORITY_LEVEL_IMG;
attrib_list[idx++] = EGL_CONTEXT_PRIORITY_LOW_IMG;
}
attrib_list[idx++] = EGL_NONE;
if (hasEglDisplay()) {
mEglContext = eglCreateContext(mEglDisplay, mEglConfig, EGL_NO_CONTEXT, attrib_list, 0);
} else {