Add call sites for OpenGL's debug label extension

Change-Id: I9c689127e8166cbef92c935f8aa07217ab806dda

Author: Romain Guy

libs/hwui/Caches.cpp

@@ -48,25 +48,9 @@ namespace uirenderer {
 ///////////////////////////////////////////////////////////////////////////////
 
 Caches::Caches(): Singleton<Caches>(), mInitialized(false) {
-    GLint maxTextureUnits;
-    glGetIntegerv(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS, &maxTextureUnits);
-    if (maxTextureUnits < REQUIRED_TEXTURE_UNITS_COUNT) {
-        ALOGW("At least %d texture units are required!", REQUIRED_TEXTURE_UNITS_COUNT);
-    }
-
-    glGetIntegerv(GL_MAX_TEXTURE_SIZE, &maxTextureSize);
-
-    if (extensions.hasDebugMarker()) {
-        eventMark = glInsertEventMarkerEXT;
-        startMark = glPushGroupMarkerEXT;
-        endMark = glPopGroupMarkerEXT;
-    } else {
-        eventMark = eventMarkNull;
-        startMark = startMarkNull;
-        endMark = endMarkNull;
-    }
-
     init();
+    initExtensions();
+    initConstraints();
 
     mDebugLevel = readDebugLevel();
     ALOGD("Enabling debug mode %d", mDebugLevel);
@@ -105,6 +89,36 @@ void Caches::init() {
     mInitialized = true;
 }
 
+void Caches::initExtensions() {
+    if (extensions.hasDebugMarker()) {
+        eventMark = glInsertEventMarkerEXT;
+        startMark = glPushGroupMarkerEXT;
+        endMark = glPopGroupMarkerEXT;
+    } else {
+        eventMark = eventMarkNull;
+        startMark = startMarkNull;
+        endMark = endMarkNull;
+    }
+
+    if (extensions.hasDebugLabel()) {
+        setLabel = glLabelObjectEXT;
+        getLabel = glGetObjectLabelEXT;
+    } else {
+        setLabel = setLabelNull;
+        getLabel = getLabelNull;
+    }
+}
+
+void Caches::initConstraints() {
+    GLint maxTextureUnits;
+    glGetIntegerv(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS, &maxTextureUnits);
+    if (maxTextureUnits < REQUIRED_TEXTURE_UNITS_COUNT) {
+        ALOGW("At least %d texture units are required!", REQUIRED_TEXTURE_UNITS_COUNT);
+    }
+
+    glGetIntegerv(GL_MAX_TEXTURE_SIZE, &maxTextureSize);
+}
+
 void Caches::terminate() {
     if (!mInitialized) return;
 

libs/hwui/Caches.h

@@ -107,7 +107,7 @@ class ANDROID_API Caches: public Singleton<Caches> {
     };
 
     /**
-     * Initializes the cache.
+     * Initialize caches.
      */
     void init();
 
@@ -247,15 +247,30 @@ class ANDROID_API Caches: public Singleton<Caches> {
     GammaFontRenderer fontRenderer;
     ResourceCache resourceCache;
 
+    // Debug methods
     PFNGLINSERTEVENTMARKEREXTPROC eventMark;
     PFNGLPUSHGROUPMARKEREXTPROC startMark;
     PFNGLPOPGROUPMARKEREXTPROC endMark;
 
+    PFNGLLABELOBJECTEXTPROC setLabel;
+    PFNGLGETOBJECTLABELEXTPROC getLabel;
+
 private:
-    static void eventMarkNull(GLsizei length, const GLchar *marker) { }
-    static void startMarkNull(GLsizei length, const GLchar *marker) { }
+    void initExtensions();
+    void initConstraints();
+
+    static void eventMarkNull(GLsizei length, const GLchar* marker) { }
+    static void startMarkNull(GLsizei length, const GLchar* marker) { }
     static void endMarkNull() { }
 
+    static void setLabelNull(GLenum type, uint object, GLsizei length,
+            const char* label) { }
+    static void getLabelNull(GLenum type, uint object, GLsizei bufferSize,
+            GLsizei* length, char* label) {
+        if (length) *length = 0;
+        if (label) *label = '\0';
+    }
+
     GLuint mCurrentBuffer;
     GLuint mCurrentIndicesBuffer;
     void* mCurrentPositionPointer;

libs/hwui/Extensions.h

@@ -40,7 +40,6 @@ namespace uirenderer {
 #endif
 
 // Vendor strings
-
 #define VENDOR_IMG "Imagination Technologies"
 
 ///////////////////////////////////////////////////////////////////////////////
@@ -68,6 +67,7 @@ class Extensions {
         mHasFramebufferFetch = hasExtension("GL_NV_shader_framebuffer_fetch");
         mHasDiscardFramebuffer = hasExtension("GL_EXT_discard_framebuffer");
         mHasDebugMarker = hasExtension("GL_EXT_debug_marker");
+        mHasDebugLabel = hasExtension("GL_EXT_debug_label");
 
         const char* vendor = (const char*) glGetString(GL_VENDOR);
         EXT_LOGD("Vendor: %s", vendor);
@@ -84,6 +84,7 @@ class Extensions {
     inline bool needsHighpTexCoords() const { return mNeedsHighpTexCoords; }
     inline bool hasDiscardFramebuffer() const { return mHasDiscardFramebuffer; }
     inline bool hasDebugMarker() const { return mHasDebugMarker; }
+    inline bool hasDebugLabel() const { return mHasDebugLabel; }
 
     bool hasExtension(const char* extension) const {
         const String8 s(extension);
@@ -104,6 +105,7 @@ class Extensions {
     bool mHasFramebufferFetch;
     bool mHasDiscardFramebuffer;
     bool mHasDebugMarker;
+    bool mHasDebugLabel;
 }; // class Extensions
 
 }; // namespace uirenderer