EGLBoolean eglDisplay::getConfigGLPixelFormat(EGLConfig config, GLenum * format)
{
EGLint redSize, blueSize, greenSize, alphaSize;
if ( !(getAttribValue(config, m_attribs.valueFor(EGL_RED_SIZE), &redSize) &&
getAttribValue(config, m_attribs.valueFor(EGL_BLUE_SIZE), &blueSize) &&
getAttribValue(config, m_attribs.valueFor(EGL_GREEN_SIZE), &greenSize) &&
getAttribValue(config, m_attribs.valueFor(EGL_ALPHA_SIZE), &alphaSize)) )
{
ALOGE("Couldn't find value for one of the pixel format attributes");
return EGL_FALSE;
}
//calculate the GL internal format
if ((redSize == greenSize) && (redSize == blueSize) &&
((redSize == 8) || (redSize == 16) || (redSize == 32)))
{
if (alphaSize == 0) *format = GL_RGB;
else *format = GL_RGBA;
}
else if ((redSize==5)&&(greenSize==6)&&(blueSize==5)&&(alphaSize==0)) *format = GL_RGB565_OES;
else if ((redSize==5)&&(greenSize==5)&&(blueSize==5)&&(alphaSize==1)) *format = GL_RGB5_A1_OES;
else if ((redSize==4)&&(greenSize==4)&&(blueSize==4)&&(alphaSize==4)) *format = GL_RGBA4_OES;
else return EGL_FALSE;
return EGL_TRUE;
}
EGLBoolean eglDisplay::getConfigAttrib(EGLConfig config, EGLint attrib, EGLint * value)
{
//Though it seems that valueFor() is thread-safe, we don't take chanses
pthread_mutex_lock(&m_lock);
EGLBoolean ret = getAttribValue(config, m_attribs.valueFor(attrib), value);
pthread_mutex_unlock(&m_lock);
return ret;
}
void eglDisplay::dumpConfig(EGLConfig config)
{
EGLint value = 0;
DBG("^^^^^^^^^^ dumpConfig %d ^^^^^^^^^^^^^^^^^^", (int)config);
for (int i=0; i<m_numConfigAttribs; i++) {
getAttribValue(config, i, &value);
DBG("{%d}[%d] %d\n", (int)config, i, value);
}
}
EGLBoolean eglDisplay::getConfigNativePixelFormat(EGLConfig config, PixelFormat * format)
{
EGLint redSize, blueSize, greenSize, alphaSize;
if ( !(getAttribValue(config, m_attribs.valueFor(EGL_RED_SIZE), &redSize) &&
getAttribValue(config, m_attribs.valueFor(EGL_BLUE_SIZE), &blueSize) &&
getAttribValue(config, m_attribs.valueFor(EGL_GREEN_SIZE), &greenSize) &&
getAttribValue(config, m_attribs.valueFor(EGL_ALPHA_SIZE), &alphaSize)) )
{
ALOGE("Couldn't find value for one of the pixel format attributes");
return EGL_FALSE;
}
//calculate the GL internal format
if ((redSize==8)&&(greenSize==8)&&(blueSize==8)&&(alphaSize==8)) *format = PIXEL_FORMAT_RGBA_8888; //XXX: BGR?
else if ((redSize==8)&&(greenSize==8)&&(blueSize==8)&&(alphaSize==0)) *format = PIXEL_FORMAT_RGBX_8888; //XXX or PIXEL_FORMAT_RGB_888
else if ((redSize==5)&&(greenSize==6)&&(blueSize==5)&&(alphaSize==0)) *format = PIXEL_FORMAT_RGB_565;
else if ((redSize==5)&&(greenSize==5)&&(blueSize==5)&&(alphaSize==1)) *format = PIXEL_FORMAT_RGBA_5551;
else if ((redSize==4)&&(greenSize==4)&&(blueSize==4)&&(alphaSize==4)) *format = PIXEL_FORMAT_RGBA_4444;
else {
return EGL_FALSE;
}
return EGL_TRUE;
}
