PDA

View Full Version : GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_OES - Android NDK



bolek
01-19-2013, 08:02 AM
I'm having problem with OpenGL ES 1.x rendering engine on my Nexus 7 - I'm trying to create frame buffer but it always return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_OES no matter what, the code is as shown below:


#ifdef __ANDROID__
glGenFramebuffersOES(1, &gameSurfaceFrameBuffer);
#else
glGenFramebuffers(1, &gameSurfaceFrameBuffer);
#endif

#ifdef __ANDROID__
glBindFramebufferOES(GL_FRAMEBUFFER_OES, gameSurfaceFrameBuffer);
#else
glBindFramebuffer(GL_FRAMEBUFFER, gameSurfaceFrameBuffer);
#endif

glGenTextures(1, &gameSurfaceTexture);
glBindTexture(GL_TEXTURE_2D, gameSurfaceTexture);

glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);

glTexImage2D(GL_TEXTURE_2D, 0, 4, 48 * 14, 48 * 12, 0, GL_RGBA, GL_UNSIGNED_BYTE, 0);

#ifdef __ANDROID__
glFramebufferTexture2DOES(GL_FRAMEBUFFER_OES, GL_COLOR_ATTACHMENT0_OES, GL_TEXTURE_2D, gameSurfaceTexture, 0);
#else
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, gameSurfaceTexture, 0);
#endif

#ifdef __ANDROID__
GLenum status = glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES);
#else
GLenum status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
#endif

#ifdef __ANDROID__
if(status != GL_FRAMEBUFFER_COMPLETE_OES){
#else
if(status != GL_FRAMEBUFFER_COMPLETE){
#endif
std::stringstream ss;
ss << "gameSurfaceFrameBuffer, status != GL_FRAMEBUFFER_COMPLETE ";
ss << "status = " << status;
throw ss.str();
}
}

As you can see I have the code for both Android and normal OpenGL - the code works on Windows just fine but on Android it returns incomplete attachment.

I took the code to create EGL surface from native-activity sample, maybe it's something about that which doesn't allow me to create the buffer?

debinair
01-21-2013, 11:19 AM
check the 3rd parameter you are passing to glTeximage2D, it should be internal format.
Also, try creating renderbuffer and attach depth attachement to framebuffer.

ClayMontgomery
01-21-2013, 06:46 PM
The 3rd parameter to glTexImage2D() must be one of these for Android:

/* PixelFormat */
#define GL_ALPHA 0x1906
#define GL_RGB 0x1907
#define GL_RGBA 0x1908
#define GL_LUMINANCE 0x1909
#define GL_LUMINANCE_ALPHA 0x190A

Regards, Clay