diff options
author | Ivo van Dongen <info@ivovandongen.nl> | 2017-07-21 16:15:30 +0300 |
---|---|---|
committer | Ivo van Dongen <ivovandongen@users.noreply.github.com> | 2017-09-22 23:33:56 +0300 |
commit | 347d7c19c0a70f91252163b14e37583eea83fdd5 (patch) | |
tree | c46968ba9fb947be6b6387ab18b10a0fede35f59 /platform/android/MapboxGLAndroidSDK/src/main/java/com | |
parent | e780cdc29ee82459a75db5aba2e72c5536a2d1b0 (diff) | |
download | qtlocation-mapboxgl-347d7c19c0a70f91252163b14e37583eea83fdd5.tar.gz |
[android] async rendering
- introduces GLSurfaceView
- introduces Orchestration thread
- renders on the gl thread
Diffstat (limited to 'platform/android/MapboxGLAndroidSDK/src/main/java/com')
5 files changed, 425 insertions, 146 deletions
diff --git a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/egl/EGLConfigChooser.java b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/egl/EGLConfigChooser.java new file mode 100644 index 0000000000..7fc70716da --- /dev/null +++ b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/egl/EGLConfigChooser.java @@ -0,0 +1,293 @@ +package com.mapbox.mapboxsdk.egl; + +import android.opengl.GLSurfaceView; +import android.support.annotation.NonNull; + +import java.util.ArrayList; +import java.util.Collections; +import java.util.List; + +import javax.microedition.khronos.egl.EGL10; +import javax.microedition.khronos.egl.EGLConfig; +import javax.microedition.khronos.egl.EGLDisplay; + +import timber.log.Timber; + +import static com.mapbox.mapboxsdk.utils.Compare.compare; +import static javax.microedition.khronos.egl.EGL10.EGL_ALPHA_MASK_SIZE; +import static javax.microedition.khronos.egl.EGL10.EGL_ALPHA_SIZE; +import static javax.microedition.khronos.egl.EGL10.EGL_BLUE_SIZE; +import static javax.microedition.khronos.egl.EGL10.EGL_BUFFER_SIZE; +import static javax.microedition.khronos.egl.EGL10.EGL_COLOR_BUFFER_TYPE; +import static javax.microedition.khronos.egl.EGL10.EGL_CONFIG_CAVEAT; +import static javax.microedition.khronos.egl.EGL10.EGL_DEPTH_SIZE; +import static javax.microedition.khronos.egl.EGL10.EGL_GREEN_SIZE; +import static javax.microedition.khronos.egl.EGL10.EGL_NONE; +import static javax.microedition.khronos.egl.EGL10.EGL_RED_SIZE; +import static javax.microedition.khronos.egl.EGL10.EGL_RENDERABLE_TYPE; +import static javax.microedition.khronos.egl.EGL10.EGL_RGB_BUFFER; +import static javax.microedition.khronos.egl.EGL10.EGL_SAMPLES; +import static javax.microedition.khronos.egl.EGL10.EGL_SAMPLE_BUFFERS; +import static javax.microedition.khronos.egl.EGL10.EGL_STENCIL_SIZE; +import static javax.microedition.khronos.egl.EGL10.EGL_SURFACE_TYPE; +import static javax.microedition.khronos.egl.EGL10.EGL_WINDOW_BIT; + +/** + * Selects the right EGLConfig needed for `mapbox-gl-native` + */ +public class EGLConfigChooser implements GLSurfaceView.EGLConfigChooser { + + /** + * Requires API level 17 + * + * @see android.opengl.EGL14.EGL_CONFORMANT; + */ + @SuppressWarnings("JavadocReference") + private static final int EGL_CONFORMANT = 0x3042; + + /** + * Requires API level 17 + * + * @see android.opengl.EGL14.EGL_OPENGL_ES2_BIT; + */ + @SuppressWarnings("JavadocReference") + private static final int EGL_OPENGL_ES2_BIT = 0x0004; + + @Override + public EGLConfig chooseConfig(EGL10 egl, EGLDisplay display) { + int[] configAttribs = getConfigAttributes(); + + // Determine number of possible configurations + int[] numConfigs = getNumberOfConfigurations(egl, display, configAttribs); + if (numConfigs[0] < 1) { + Timber.e("eglChooseConfig() returned no configs."); + throw new EGLConfigException("eglChooseConfig() failed"); + } + + // Get all possible configurations + EGLConfig[] possibleConfigurations = getPossibleConfigurations(egl, display, configAttribs, numConfigs); + + // Choose best match + EGLConfig config = chooseBestMatchConfig(egl, display, possibleConfigurations); + if (config == null) { + Timber.e("No config chosen"); + throw new EGLConfigException("No config chosen"); + } + + return config; + } + + private int[] getNumberOfConfigurations(EGL10 egl, EGLDisplay display, int[] configAttributes) { + int[] numConfigs = new int[1]; + if (!egl.eglChooseConfig(display, configAttributes, null, 0, numConfigs)) { + Timber.e("eglChooseConfig(NULL) returned error %d", egl.eglGetError()); + throw new EGLConfigException("eglChooseConfig() failed"); + } + return numConfigs; + } + + private EGLConfig[] getPossibleConfigurations(EGL10 egl, EGLDisplay display, + int[] configAttributes, int[] numConfigs) { + EGLConfig[] configs = new EGLConfig[numConfigs[0]]; + if (!egl.eglChooseConfig(display, configAttributes, configs, numConfigs[0], numConfigs)) { + Timber.e("eglChooseConfig() returned error %d", egl.eglGetError()); + throw new EGLConfigException("eglChooseConfig() failed"); + } + return configs; + } + + // Quality + enum BufferFormat { + Format16Bit(3), + Format32BitNoAlpha(1), + Format32BitAlpha(2), + Format24Bit(0), + Unknown(4); + + int value; + + BufferFormat(int value) { + this.value = value; + } + } + + enum DepthStencilFormat { + Format16Depth8Stencil(1), + Format24Depth8Stencil(0); + + int value; + + DepthStencilFormat(int value) { + this.value = value; + } + } + + private EGLConfig chooseBestMatchConfig(EGL10 egl, EGLDisplay display, EGLConfig[] configs) { + class Config implements Comparable<Config> { + private final BufferFormat bufferFormat; + private final DepthStencilFormat depthStencilFormat; + private final boolean isNotConformant; + private final boolean isCaveat; + private final int index; + private final EGLConfig config; + + public Config(BufferFormat bufferFormat, DepthStencilFormat depthStencilFormat, + boolean isNotConformant, boolean isCaveat, int index, EGLConfig config) { + this.bufferFormat = bufferFormat; + this.depthStencilFormat = depthStencilFormat; + this.isNotConformant = isNotConformant; + this.isCaveat = isCaveat; + this.index = index; + this.config = config; + } + + + @Override + public int compareTo(@NonNull Config other) { + int i = compare(bufferFormat.value, other.bufferFormat.value); + if (i != 0) { + return i; + } + + i = compare(depthStencilFormat.value, other.depthStencilFormat.value); + if (i != 0) { + return i; + } + + i = compare(isNotConformant, other.isNotConformant); + if (i != 0) { + return i; + } + + i = compare(isCaveat, other.isCaveat); + if (i != 0) { + return i; + } + + i = compare(index, other.index); + if (i != 0) { + return i; + } + + return 0; + } + } + + List<Config> matches = new ArrayList<>(); + + int i = 0; + for (EGLConfig config : configs) { + i++; + + int caveat = getConfigAttr(egl, display, config, EGL_CONFIG_CAVEAT); + int conformant = getConfigAttr(egl, display, config, EGL_CONFORMANT); + int bits = getConfigAttr(egl, display, config, EGL_BUFFER_SIZE); + int red = getConfigAttr(egl, display, config, EGL_RED_SIZE); + int green = getConfigAttr(egl, display, config, EGL_GREEN_SIZE); + int blue = getConfigAttr(egl, display, config, EGL_BLUE_SIZE); + int alpha = getConfigAttr(egl, display, config, EGL_ALPHA_SIZE); + int alphaMask = getConfigAttr(egl, display, config, EGL_ALPHA_MASK_SIZE); + int depth = getConfigAttr(egl, display, config, EGL_DEPTH_SIZE); + int stencil = getConfigAttr(egl, display, config, EGL_STENCIL_SIZE); + int sampleBuffers = getConfigAttr(egl, display, config, EGL_SAMPLE_BUFFERS); + int samples = getConfigAttr(egl, display, config, EGL_SAMPLES); + + boolean configOk = (depth == 24) || (depth == 16); + configOk &= stencil == 8; + configOk &= sampleBuffers == 0; + configOk &= samples == 0; + + // Filter our configs first for depth, stencil and anti-aliasing + if (configOk) { + // Work out the config's buffer format + BufferFormat bufferFormat; + if ((bits == 16) && (red == 5) && (green == 6) && (blue == 5) && (alpha == 0)) { + bufferFormat = BufferFormat.Format16Bit; + } else if ((bits == 32) && (red == 8) && (green == 8) && (blue == 8) && (alpha == 0)) { + bufferFormat = BufferFormat.Format32BitNoAlpha; + } else if ((bits == 32) && (red == 8) && (green == 8) && (blue == 8) && (alpha == 8)) { + bufferFormat = BufferFormat.Format32BitAlpha; + } else if ((bits == 24) && (red == 8) && (green == 8) && (blue == 8) && (alpha == 0)) { + bufferFormat = BufferFormat.Format24Bit; + } else { + bufferFormat = BufferFormat.Unknown; + } + + // Work out the config's depth stencil format + DepthStencilFormat depthStencilFormat; + if ((depth == 16) && (stencil == 8)) { + depthStencilFormat = DepthStencilFormat.Format16Depth8Stencil; + } else { + depthStencilFormat = DepthStencilFormat.Format24Depth8Stencil; + } + + boolean isNotConformant = (conformant & EGL_OPENGL_ES2_BIT) != EGL_OPENGL_ES2_BIT; + boolean isCaveat = caveat != EGL_NONE; + + // Ignore formats we don't recognise + if (bufferFormat != BufferFormat.Unknown) { + matches.add(new Config(bufferFormat, depthStencilFormat, isNotConformant, isCaveat, i, config)); + } + } + + } + + // Sort + Collections.sort(matches); + + if (matches.size() == 0) { + throw new EGLConfigException("No matching configurations after filtering"); + } + + Config bestMatch = matches.get(0); + + if (bestMatch.isCaveat) { + Timber.w("Chosen config has a caveat."); + } + + if (bestMatch.isNotConformant) { + Timber.w("Chosen config is not conformant."); + } + + return bestMatch.config; + } + + private int getConfigAttr(EGL10 egl, EGLDisplay display, EGLConfig config, int attributeName) { + int[] attributevalue = new int[1]; + if (!egl.eglGetConfigAttrib(display, config, attributeName, attributevalue)) { + Timber.e("eglGetConfigAttrib(%d) returned error %d", attributeName, egl.eglGetError()); + throw new EGLConfigException("eglGetConfigAttrib() failed"); + } + return attributevalue[0]; + } + + + private int[] getConfigAttributes() { + boolean emulator = inEmulator(); + Timber.i("In emulator: %s", emulator); + + // Get all configs at least RGB 565 with 16 depth and 8 stencil + return new int[] { + EGL_CONFIG_CAVEAT, EGL_NONE, + EGL_SURFACE_TYPE, EGL_WINDOW_BIT, + EGL_BUFFER_SIZE, 16, + EGL_RED_SIZE, 5, + EGL_GREEN_SIZE, 6, + EGL_BLUE_SIZE, 5, + EGL_ALPHA_SIZE, 0, + EGL_DEPTH_SIZE, 16, + EGL_STENCIL_SIZE, 8, + (emulator ? EGL_NONE : EGL_CONFORMANT), EGL_OPENGL_ES2_BIT, + (emulator ? EGL_NONE : EGL_COLOR_BUFFER_TYPE), EGL_RGB_BUFFER, + EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT, + EGL_NONE + }; + } + + /** + * Detect if we are in emulator. + */ + private boolean inEmulator() { + return System.getProperty("ro.kernel.qemu") != null; + } +} diff --git a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/egl/EGLConfigException.java b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/egl/EGLConfigException.java new file mode 100644 index 0000000000..3f576d0eda --- /dev/null +++ b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/egl/EGLConfigException.java @@ -0,0 +1,21 @@ +package com.mapbox.mapboxsdk.egl; + +/** + * Used for EGL configuration exceptions + */ +public class EGLConfigException extends RuntimeException { + public EGLConfigException() { + } + + public EGLConfigException(String message) { + super(message); + } + + public EGLConfigException(String message, Throwable cause) { + super(message, cause); + } + + public EGLConfigException(Throwable cause) { + super(cause); + } +} diff --git a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/maps/MapView.java b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/maps/MapView.java index 4d2019d68b..a920bed720 100644 --- a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/maps/MapView.java +++ b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/maps/MapView.java @@ -1,10 +1,9 @@ package com.mapbox.mapboxsdk.maps; import android.content.Context; -import android.graphics.Canvas; import android.graphics.PointF; -import android.graphics.SurfaceTexture; import android.os.Build; +import android.opengl.GLSurfaceView; import android.os.Bundle; import android.support.annotation.CallSuper; import android.support.annotation.IntDef; @@ -16,10 +15,6 @@ import android.util.AttributeSet; import android.view.KeyEvent; import android.view.LayoutInflater; import android.view.MotionEvent; -import android.view.Surface; -import android.view.SurfaceHolder; -import android.view.SurfaceView; -import android.view.TextureView; import android.view.View; import android.view.ViewGroup; import android.view.ViewTreeObserver; @@ -32,6 +27,7 @@ import com.mapbox.mapboxsdk.annotations.Annotation; import com.mapbox.mapboxsdk.annotations.MarkerViewManager; import com.mapbox.mapboxsdk.constants.MapboxConstants; import com.mapbox.mapboxsdk.constants.Style; +import com.mapbox.mapboxsdk.egl.EGLConfigChooser; import com.mapbox.mapboxsdk.maps.widgets.CompassView; import com.mapbox.mapboxsdk.maps.widgets.MyLocationView; import com.mapbox.mapboxsdk.maps.widgets.MyLocationViewSettings; @@ -45,10 +41,14 @@ import java.util.Iterator; import java.util.List; import java.util.concurrent.CopyOnWriteArrayList; +import javax.microedition.khronos.egl.EGLConfig; +import javax.microedition.khronos.opengles.GL10; + import timber.log.Timber; import static com.mapbox.mapboxsdk.maps.widgets.CompassView.TIME_MAP_NORTH_ANIMATION; import static com.mapbox.mapboxsdk.maps.widgets.CompassView.TIME_WAIT_IDLE; +import static android.opengl.GLSurfaceView.RENDERMODE_WHEN_DIRTY; /** * <p> @@ -72,7 +72,6 @@ public class MapView extends FrameLayout { private NativeMapView nativeMapView; private MapboxMapOptions mapboxMapOptions; private boolean destroyed; - private boolean hasSurface; private MyLocationView myLocationView; private CompassView compassView; @@ -86,6 +85,8 @@ public class MapView extends FrameLayout { private Bundle savedInstanceState; private final CopyOnWriteArrayList<OnMapChangedListener> onMapChangedListeners = new CopyOnWriteArrayList<>(); + private GLSurfaceView glSurfaceView; + @UiThread public MapView(@NonNull Context context) { super(context); @@ -280,10 +281,37 @@ public class MapView extends FrameLayout { } private void initialiseDrawingSurface() { - SurfaceView surfaceView = (SurfaceView) findViewById(R.id.surfaceView); - surfaceView.setZOrderMediaOverlay(mapboxMapOptions.getRenderSurfaceOnTop()); - surfaceView.getHolder().addCallback(new SurfaceCallback()); - surfaceView.setVisibility(View.VISIBLE); + glSurfaceView = (GLSurfaceView) findViewById(R.id.surfaceView); + glSurfaceView.setZOrderMediaOverlay(mapboxMapOptions.getRenderSurfaceOnTop()); + glSurfaceView.setEGLContextClientVersion(2); + glSurfaceView.setEGLConfigChooser(new EGLConfigChooser()); + glSurfaceView.setRenderer(new GLSurfaceView.Renderer() { + + @Override + public void onSurfaceCreated(GL10 gl, EGLConfig config) { + MapView.this.post(new Runnable() { + @Override + public void run() { + initialiseMap(); + mapboxMap.onStart(); + } + }); + + nativeMapView.onSurfaceCreated(gl, config); + } + + @Override + public void onSurfaceChanged(GL10 gl, int width, int height) { + nativeMapView.onSurfaceChanged(gl, width, height); + } + + @Override + public void onDrawFrame(GL10 gl) { + nativeMapView.onDrawFrame(gl); + } + }); + glSurfaceView.setRenderMode(RENDERMODE_WHEN_DIRTY); + glSurfaceView.setVisibility(View.VISIBLE); } /** @@ -314,7 +342,9 @@ public class MapView extends FrameLayout { */ @UiThread public void onResume() { - // replaced by onStart in v5.0.0 + if (glSurfaceView != null) { + glSurfaceView.onResume(); + } } /** @@ -322,7 +352,9 @@ public class MapView extends FrameLayout { */ @UiThread public void onPause() { - // replaced by onStop in v5.0.0 + if (glSurfaceView != null) { + glSurfaceView.onPause(); + } } /** @@ -465,24 +497,10 @@ public class MapView extends FrameLayout { // Called when the map needs to be rerendered // Called via JNI from NativeMapView protected void onInvalidate() { - postInvalidate(); - } - - @Override - public void onDraw(Canvas canvas) { - super.onDraw(canvas); - if (isInEditMode()) { - return; + if (glSurfaceView != null) { + glSurfaceView.requestRender(); } - - if (destroyed) { - return; - } - - if (!hasSurface) { - return; - } - nativeMapView.render(); + // TODO: removable? postInvalidate(); } @Override @@ -496,103 +514,6 @@ public class MapView extends FrameLayout { } } - private class SurfaceCallback implements SurfaceHolder.Callback { - - private Surface surface; - - @Override - public void surfaceCreated(SurfaceHolder holder) { - if (nativeMapView == null) { - nativeMapView = new NativeMapView(MapView.this); - nativeMapView.createSurface(surface = holder.getSurface()); - nativeMapView.resizeView(getWidth(), getHeight()); - initialiseMap(); - mapboxMap.onStart(); - } else { - nativeMapView.createSurface(surface = holder.getSurface()); - } - - hasSurface = true; - } - - @Override - public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) { - if (destroyed) { - return; - } - nativeMapView.resizeFramebuffer(width, height); - } - - @Override - public void surfaceDestroyed(SurfaceHolder holder) { - hasSurface = false; - - if (nativeMapView != null) { - // occurs when activity goes to background - nativeMapView.destroySurface(); - } - surface.release(); - } - } - - // This class handles TextureView callbacks - private class SurfaceTextureListener implements TextureView.SurfaceTextureListener { - - private Surface surface; - - // Called when the native surface texture has been created - // Must do all EGL/GL ES initialization here - @Override - public void onSurfaceTextureAvailable(SurfaceTexture surface, int width, int height) { - if (nativeMapView == null) { - nativeMapView = new NativeMapView(MapView.this); - nativeMapView.createSurface(this.surface = new Surface(surface)); - nativeMapView.resizeFramebuffer(width, height); - nativeMapView.resizeView(width, height); - initialiseMap(); - mapboxMap.onStart(); - } else { - nativeMapView.createSurface(this.surface = new Surface(surface)); - } - - hasSurface = true; - } - - // Called when the native surface texture has been destroyed - // Must do all EGL/GL ES destruction here - @Override - public boolean onSurfaceTextureDestroyed(SurfaceTexture surface) { - hasSurface = false; - - if (nativeMapView != null) { - nativeMapView.destroySurface(); - } - this.surface.release(); - return true; - } - - // Called when the format or size of the native surface texture has been changed - // Must handle window resizing here. - @Override - public void onSurfaceTextureSizeChanged(SurfaceTexture surface, int width, int height) { - if (destroyed) { - return; - } - - nativeMapView.resizeFramebuffer(width, height); - } - - // Called when the SurfaceTexure frame is drawn to screen - // Must sync with UI here - @Override - public void onSurfaceTextureUpdated(SurfaceTexture surface) { - if (destroyed) { - return; - } - mapboxMap.onUpdateRegionChange(); - } - } - // // View events // @@ -612,7 +533,9 @@ public class MapView extends FrameLayout { return; } - if (nativeMapView != null) { + if (nativeMapView == null) { + nativeMapView = new NativeMapView(this); + } else if (mapZoomButtonController != null) { mapZoomButtonController.setVisible(visibility == View.VISIBLE); } } diff --git a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/maps/NativeMapView.java b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/maps/NativeMapView.java index 4f5037e4b3..a97b7cc8f2 100755 --- a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/maps/NativeMapView.java +++ b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/maps/NativeMapView.java @@ -4,12 +4,12 @@ import android.content.Context; import android.graphics.Bitmap; import android.graphics.PointF; import android.graphics.RectF; +import android.opengl.GLSurfaceView; import android.support.annotation.IntRange; import android.support.annotation.NonNull; import android.support.annotation.Nullable; import android.text.TextUtils; import android.util.DisplayMetrics; -import android.view.Surface; import com.mapbox.mapboxsdk.LibraryLoader; import com.mapbox.mapboxsdk.annotations.Icon; @@ -35,10 +35,13 @@ import java.util.ArrayList; import java.util.Arrays; import java.util.List; +import javax.microedition.khronos.egl.EGLConfig; +import javax.microedition.khronos.opengles.GL10; + import timber.log.Timber; // Class that wraps the native methods for convenience -final class NativeMapView { +final class NativeMapView implements GLSurfaceView.Renderer { // Flag to indicating destroy was called private boolean destroyed = false; @@ -97,20 +100,6 @@ final class NativeMapView { destroyed = true; } - public void createSurface(Surface surface) { - if (isDestroyedOn("createSurface")) { - return; - } - nativeCreateSurface(surface); - } - - public void destroySurface() { - if (isDestroyedOn("destroySurface")) { - return; - } - nativeDestroySurface(); - } - public void update() { if (isDestroyedOn("update")) { return; @@ -156,7 +145,7 @@ final class NativeMapView { nativeResizeView(width, height); } - public void resizeFramebuffer(int fbWidth, int fbHeight) { + private void resizeFramebuffer(int fbWidth, int fbHeight) { if (isDestroyedOn("resizeFramebuffer")) { return; } @@ -1141,6 +1130,32 @@ final class NativeMapView { void addSnapshotCallback(@NonNull MapboxMap.SnapshotReadyCallback callback) { snapshotReadyCallback = callback; scheduleTakeSnapshot(); - render(); + mapView.onInvalidate(); + // TODO. this should do a request render + //render(); + } + + // + // GLSurfaceView.Renderer + // + + @Override + public void onSurfaceCreated(GL10 gl, EGLConfig config) { + Timber.i("[%s] onSurfaceCreated", Thread.currentThread().getName()); + //TODO: callback to map to re-create renderer? + } + + @Override + public void onSurfaceChanged(GL10 gl, int width, int height) { + Timber.i("[%s] onSurfaceChanged %sx%s", Thread.currentThread().getName(), width, height); + // Sets the current view port to the new size. + gl.glViewport(0, 0, width, height); + resizeFramebuffer(width, height); + // resizeView(width, height); Done from MapView#onSizeChanged + } + + @Override + public void onDrawFrame(GL10 gl) { + nativeRender(); } } diff --git a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/utils/Compare.java b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/utils/Compare.java new file mode 100644 index 0000000000..c7d7a13a3d --- /dev/null +++ b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/utils/Compare.java @@ -0,0 +1,27 @@ +package com.mapbox.mapboxsdk.utils; + +/** + * Comparisons from std sdk, which aren't available in API level <= 15 + */ +public class Compare { + + /** + * @see Integer#compare(int, int) + * @param x left side + * @param y right side + * @return std compare value + */ + public static int compare(int x, int y) { + return (x < y) ? -1 : ((x == y) ? 0 : 1); + } + + /** + * @see Boolean#compare(boolean, boolean) + * @param x left side + * @param y right side + * @return std compare value + */ + public static int compare(boolean x, boolean y) { + return (x == y) ? 0 : (x ? 1 : -1); + } +} |