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org.robolectric.shadows.ShadowEGL14 Maven / Gradle / Ivy
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An alternative Android testing framework.
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package org.robolectric.shadows;
import android.opengl.EGL14;
import android.opengl.EGLConfig;
import android.opengl.EGLContext;
import android.opengl.EGLDisplay;
import android.opengl.EGLSurface;
import org.robolectric.annotation.Implementation;
import org.robolectric.annotation.Implements;
import org.robolectric.util.ReflectionHelpers;
import org.robolectric.util.ReflectionHelpers.ClassParameter;
/** Shadow for EGL14. Currently doesn't handle real graphics work, but avoids crashing when run. */
@Implements(value = EGL14.class)
public class ShadowEGL14 {
private static final long UNUSED_HANDLE_ID = 43L;
@Implementation
protected static EGLDisplay eglGetDisplay(int displayId) {
return createEglDisplay();
}
@Implementation
protected static boolean eglInitialize(
EGLDisplay dpy, int[] major, int majorOffset, int[] minor, int minorOffset) {
return true;
}
@Implementation
protected static boolean eglChooseConfig(
EGLDisplay dpy,
int[] attribList,
int attribListOffset,
EGLConfig[] configs,
int configsOffset,
int configSize,
int[] numConfig,
int numConfigOffset) {
// The configs array here can be null, in which case the numConfig output is supposed to be
// set to the number of matching configs instead of the number of returned configs.
if (configs != null) {
configs[configsOffset] = createEglConfig();
}
numConfig[numConfigOffset] = 1;
return true;
}
@Implementation
protected static EGLContext eglCreateContext(
EGLDisplay dpy, EGLConfig config, EGLContext shareContext, int[] attribList, int offset) {
int majorVersion = getAttribValue(attribList, EGL14.EGL_CONTEXT_CLIENT_VERSION);
switch (majorVersion) {
case 2:
case 3:
return createEglContext(majorVersion);
default:
break;
}
return EGL14.EGL_NO_CONTEXT;
}
@Implementation
protected static boolean eglQueryContext(
EGLDisplay dpy, EGLContext ctx, int attribute, int[] value, int offset) {
value[offset] = 0;
switch (attribute) {
case EGL14.EGL_CONTEXT_CLIENT_VERSION:
// We stored the version in the handle field when we created the context.
value[offset] = (int) ctx.getNativeHandle();
break;
default:
// Use default output set above switch.
}
return true;
}
@Implementation
protected static EGLSurface eglCreatePbufferSurface(
EGLDisplay dpy, EGLConfig config, int[] attribList, int offset) {
return createEglSurface();
}
@Implementation
protected static EGLSurface eglCreateWindowSurface(
EGLDisplay dpy, EGLConfig config, Object win, int[] attribList, int offset) {
return createEglSurface();
}
@Implementation
protected static EGLContext eglGetCurrentContext() {
return createEglContext(3);
}
@Implementation
protected static boolean eglMakeCurrent(
EGLDisplay dpy, EGLSurface draw, EGLSurface read, EGLContext ctx) {
return true;
}
@Implementation
protected static boolean eglSwapBuffers(EGLDisplay dpy, EGLSurface surface) {
return true;
}
@Implementation
protected static int eglGetError() {
return EGL14.EGL_SUCCESS;
}
private static EGLDisplay createEglDisplay() {
return ReflectionHelpers.callConstructor(
EGLDisplay.class, ClassParameter.from(long.class, UNUSED_HANDLE_ID));
}
private static EGLConfig createEglConfig() {
return ReflectionHelpers.callConstructor(
EGLConfig.class, ClassParameter.from(long.class, UNUSED_HANDLE_ID));
}
private static EGLContext createEglContext(int version) {
// As a hack store the version number in the unused handle ID so we can retrieve it later
// if the caller queries a context.
return ReflectionHelpers.callConstructor(
EGLContext.class, ClassParameter.from(long.class, version));
}
private static EGLSurface createEglSurface() {
return ReflectionHelpers.callConstructor(
EGLSurface.class, ClassParameter.from(long.class, UNUSED_HANDLE_ID));
}
private static int getAttribValue(int[] attribList, int attribute) {
int attribValue = 0;
for (int i = 0; i < attribList.length; i += 2) {
if (attribList[i] == attribute) {
attribValue = attribList[i + 1];
}
}
return attribValue;
}
}
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