我正在使用 OpenGL ES 2.0,并使用模板缓冲区。下面是我制作的一个简单的模板缓冲区演示的代码。模板只能在一台设备上正常工作。
设备如下:
Android 4.2.2、PowerVR SGX 544MP (GPU)、Allwinner A10 平板电脑。(模板缓冲区在此设备上完美运行)
Android 4.1.2、Adreno 225 (GPU)、Galaxy S III 手机。(Stencil Buffer 不起作用,有些闪烁的stencil 鬼影很少。
Android 4.2.2、Mali-400MP (GPU)、瑞芯微 rk30sdk 平板电脑。(在最初的测试中,Stencil Buffer 没有工作,经过多次更改后它现在似乎工作了,状态是有问题的。修复操作中 Stencil Buffer 的具体更改目前未知)
相同的最新 .APK 给出了上述结果。
来自“Play Store”的应用程序“OpenGL 3D Showcase”在所有三个设备上运行,并且“showcase”#18“Stencil Buffer Shadows”[OGL 1.1] 完美运行,没有错误消息。源代码随应用程序提供,经审查无效。
下面是我的模板代码:
public void onDrawFrame(GL10 glUnused) {
// Clear the rendering surface.
glClear( GL_COLOR_BUFFER_BIT | GL_STENCIL_BUFFER_BIT );
multiplyMM(viewProjectionMatrix, 0, projectionMatrix, 0, viewMatrix, 0);
invertM(invertedViewProjectionMatrix, 0, viewProjectionMatrix, 0);
//Start using the stencil
glEnable( GL_STENCIL_TEST );
//Disable rendering to the color buffer
glColorMask( false, false, false, false );
//Place a 1 where rendered
glStencilFunc( GL_ALWAYS, 1, 1 );
//Replace where rendered
glStencilOp( GL_REPLACE, GL_REPLACE, GL_REPLACE );
glDisable(GL_DEPTH_TEST);
glStencilMask(0xFF);//value used when writing to stencil buffer
// draw stencil triangle
rotateObjectInScene(0.0f, 0.0f, 0.0f);//x,y,z Object is rottated one full rotation ever 3 seconds within
colorProgram.useProgram();
colorProgram.setUniforms(modelViewProjectionMatrix, 0f, 0f, 1f);
DemoTriangleStencilObj.bindData(colorProgram);
DemoTriangleStencilObj.draw();
//Reenable color
glColorMask( true, true, true, true );
//Where a 1 was not rendered
glStencilFunc( GL_EQUAL, 1, 1 );//GL_EQUAL GL_NOTEQUAL
//Keep the pixel
glStencilOp( GL_KEEP, GL_KEEP, GL_KEEP );
glStencilMask(0x00);//disable writing to stencil buffer by setting value used to 0.
positionObjectInScene1(0.0f, 0.0f, 0.0f);//leave image/object fixed in center of screen
textureProgram1.useProgram();
textureProgram1.setUniforms(modelViewProjectionMatrix, texture_opengl);
openglImageDemoObj.bindData(textureProgram1);
openglImagerectanDemoObj.draw();
//Finished using stencil
glDisable( GL_STENCIL_TEST );
}
在里面:
public void onSurfaceCreated(GL10 glUnused, EGLConfig config) {
glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
}
public void onSurfaceChanged(GL10 glUnused, int width, int height) {
// Set the OpenGL viewport to fill the entire surface.
glViewport(0, 0, width, height);
// Landscape
orthoM(projectionMatrix, 0, -1, 1, -1f, 1f, -1f, 20f);
setLookAtM(viewMatrix, 0, 0f, 2.0f, 0.1f, 0.0f, 0f, 0f, 0f, 1f, 0f);
}
初始化2:
所有注释的“setEGLConfigChooser”调用都已尝试。
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//Remove title bar
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
//Remove notification bar
this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
//setContentView(R.layout.activity_fist_open_glproject_aactivity);
glSurfaceView = new GLSurfaceView(this);
final TheSurfaceRenderer theSurfaceRenderer = new TheSurfaceRenderer(this);
this.getApplicationContext();
final ActivityManager activityManager =
(ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);
final ConfigurationInfo configurationInfo =
activityManager.getDeviceConfigurationInfo();
//final boolean supportsEs2 = false;//configurationInfo.reqGlEsVersion >= 0x20000;
final boolean supportsEs2 = configurationInfo.reqGlEsVersion >= 0x20000;
if (supportsEs2) {
// Request an OpenGL ES 2.0 compatible context.
glSurfaceView.setEGLContextClientVersion(2);
//glSurfaceView.setEGLConfigChooser(8, 8, 8, 8, 16, 0);//when use emulator, may be needed.
glSurfaceView.setEGLConfigChooser(new MultiSampleConfigChooser());
//glSurfaceView.setEGLConfigChooser(8, 8, 8, 8, 16, 8);
//glSurfaceView.setEGLConfigChooser(5,6,5,0,24,8);
//glSurfaceView.setEGLConfigChooser(5,6,5,0,16,8);
//glSurfaceView.setEGLConfigChooser(5,6,5,8,16,8);
// Assign our renderer.
//glSurfaceView.setRenderer(new AirHockeyRenderer(this));
glSurfaceView.setRenderer(theSurfaceRenderer);
rendererSet = true;
//Toast.makeText(this, "Renderer started", Toast.LENGTH_LONG).show();
} else {
Toast.makeText(this, "This device does not support OpenGL ES 2.0.",
Toast.LENGTH_LONG).show();
return;
}
setContentView(glSurfaceView);
}
有什么想法可以跟踪问题吗?还有什么我可能会得到帮助的地方吗?(如果需要,可以联系 MFG/Android/Google 让我去任何地方吗?)