void init(void)
{
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
glClearColor(0.0, 0.0, 0.0, 0.0);
glMinmax(GL_MINMAX, GL_RGB, GL_FALSE);
glEnable(GL_MINMAX);
}
void __glXDisp_Minmax(GLbyte *pc)
{
glMinmax(
*(GLenum *)(pc + 0),
*(GLenum *)(pc + 4),
*(GLboolean *)(pc + 8)
);
}
void Sample_8_9::draw()
{
GLubyte values[6];
OGLError err;
OGLInspector inspector;
if (m_prevSink != m_sink)
{
m_bImagSprt = inspector.ImagingSupported();
if (m_bImagSprt)
{
glMinmax(GL_MINMAX, GL_RGB, m_sink);
if (err.checkError())
{
glEnable(GL_MINMAX);
glResetMinmax(GL_MINMAX);
}
else
m_bImagSprt = false;
}
else
{
m_prevSink = m_sink;
printf ("GL_ARB_imaging is not supported\n");
}
}
glRasterPos2i(5, 5);
glDrawPixels( m_image.sizeX(), m_image.sizeY(), GL_RGB,
GL_UNSIGNED_BYTE, m_image.data() );
if (m_prevSink != m_sink)
{
m_prevSink = m_sink;
glGetMinmax(GL_MINMAX,GL_TRUE,GL_RGB,GL_UNSIGNED_BYTE,values);
printf("====== MIN-MAX ======\n");
printf("Red : min = %d max = %d\n",values[0],values[3]);
printf("Green: min = %d max = %d\n",values[1],values[4]);
printf("Blue : min = %d max = %d\n",values[3],values[5]);
}
}
JNIEXPORT void JNICALL Java_org_lwjgl_opengl_ARBImaging_nglMinmax(JNIEnv *env, jclass clazz, jint target, jint internalformat, jboolean sink, jlong function_pointer) {
glMinmaxPROC glMinmax = (glMinmaxPROC)((intptr_t)function_pointer);
glMinmax(target, internalformat, sink);
}
