Regarding DisplayProductID and DisplayVendorID of Screen (Display), I can get the info from System Information and several commands in Terminal like this;
Display Product Name is different with DisplayProductID, It is just String.
$ defaults read /Library/Preferences/com.apple.windowserver.plist
{
DisplayResolutionEnabled = 1;
DisplaySets = (
(
{
Active = 1;
Depth = 4;
DisplayID = 69731456;
DisplayProductID = 40978;
DisplaySerialNumber = 0;
DisplayVendorID = 1552;
Height = 1080;
IODisplayLocation = "IOService:/AppleACPIPlatformExpert/PCI0#0/AppleACPIPCI/P0P2#1/IOPCI2PCIBridge/GFX0#0/NVDA,Display-A#0/NVDA";
IOFlags = 7;
LimitsHeight = 1080;
LimitsOriginX = 0;
LimitsOriginY = 0;
LimitsWidth = 1920;
MirrorID = 0;
Mirrored = 0;
Mode = {
BitsPerPixel = 32;
BitsPerSample = 8;
DepthFormat = 4;
Height = 1080;
IODisplayModeID = "-2147479552";
IOFlags = 7;
Mode = 1;
PixelEncoding = "--------RRRRRRRRGGGGGGGGBBBBBBBB";
RefreshRate = 0;
SamplesPerPixel = 3;
UsableForDesktopGUI = 1;
Width = 1920;
kCGDisplayBytesPerRow = 7680;
kCGDisplayHorizontalResolution = 103;
kCGDisplayModeIsInterlaced = 0;
kCGDisplayModeIsSafeForHardware = 1;
kCGDisplayModeIsStretched = 0;
kCGDisplayModeIsTelevisionOutput = 0;
kCGDisplayModeIsUnavailable = 0;
kCGDisplayModeSuitableForUI = 1;
kCGDisplayPixelsHigh = 1080;
kCGDisplayPixelsWide = 1920;
kCGDisplayResolution = 1;
kCGDisplayVerticalResolution = 103;
};
OriginX = 0;
OriginY = 0;
PixelEncoding = "--------RRRRRRRRGGGGGGGGBBBBBBBB";
Resolution = 1;
Unit = 0;
UnmirroredHeight = 1080;
UnmirroredLimitsHeight = 1080;
UnmirroredLimitsOriginX = 0;
UnmirroredLimitsOriginY = 0;
UnmirroredLimitsWidth = 1920;
UnmirroredMode = {
BitsPerPixel = 32;
BitsPerSample = 8;
DepthFormat = 4;
Height = 1080;
IODisplayModeID = "-2147479552";
IOFlags = 7;
Mode = 1;
PixelEncoding = "--------RRRRRRRRGGGGGGGGBBBBBBBB";
RefreshRate = 0;
SamplesPerPixel = 3;
UsableForDesktopGUI = 1;
Width = 1920;
kCGDisplayBytesPerRow = 7680;
kCGDisplayHorizontalResolution = 103;
kCGDisplayModeIsInterlaced = 0;
kCGDisplayModeIsSafeForHardware = 1;
kCGDisplayModeIsStretched = 0;
kCGDisplayModeIsTelevisionOutput = 0;
kCGDisplayModeIsUnavailable = 0;
kCGDisplayModeSuitableForUI = 1;
kCGDisplayPixelsHigh = 1080;
kCGDisplayPixelsWide = 1920;
kCGDisplayResolution = 1;
kCGDisplayVerticalResolution = 103;
};
UnmirroredOriginX = 0;
UnmirroredOriginY = 0;
UnmirroredResolution = 1;
UnmirroredWidth = 1920;
Width = 1920;
}
)
);
ForceOldStyleMemoryManagement = 0;
}
But I want to get this DisplayProductID and DisplayVendorID in MacOS app programmatically (Objective C).
How can I read this plist file in Objective-C?
This file is encrypted, can't get data. Please let me know the way to get DisplayProductID and VendorID programmatically.
CGDisplayVendorNumber() and CGDisplayModelNumber() should return those values. Use CGMainDisplayID() to get the ID for the main display, or there are other functions to get a list of displays you can filter/iterate over if needed.
Related
I'm implementing in code an algorithm for computing inverse polynomials in the NTRU cryptosystem, and I'm using the paper "Almost Inverses and Fast NTRU Key Creation" by Joseph H. Silverman. I implemented the second pseudo-code as:
int inverse_mod_p(polynomial *r, polynomial *a)
{
int k;
int16_t b[NTRU_N + 1], c[NTRU_N + 1], f[NTRU_N + 1], g[NTRU_N + 1];
int i;
int16_t aux;
int zero_f;
int constant_f;
int deg_fg;
memset(b, 0, (NTRU_N + 1) * sizeof(int16_t));
b[0] = 1;
memset(c, 0, (NTRU_N + 1) * sizeof(int16_t));
memcpy(f, a->coeffs, NTRU_N * sizeof(int16_t));
f[NTRU_N] = 0;
memset(g, 0, (NTRU_N + 1) * sizeof(int16_t));
g[0] = -1;
g[NTRU_N] = 1;
while (1)
{
zero_f = 1;
for (i = 0; i < NTRU_N + 1; i++)
{
if (f[i] != 0)
{
zero_f = 0;
break;
}
}
if (zero_f)
return 1;
while (f[0] == 0)
{
for (i = 0; i < NTRU_N; i++)
{
f[i] = f[i + 1];
c[NTRU_N - i] = c[NTRU_N - i - 1];
}
f[NTRU_N] = 0;
c[0] = 0;
k++;
}
constant_f = 1;
for (i = 1; i < NTRU_N + 1; i++)
{
if (f[i] != 0)
{
constant_f = 0;
break;
}
}
if (constant_f)
break;
deg_fg = 0;
for (i = NTRU_N; i >= 0; i--)
{
if (f[i] == 0 && g[i] != 0)
{
deg_fg = 1;
break;
}
else if (f[i] != 0 && g[i] == 0)
{
break;
}
}
if (deg_fg)
{
for (i = 0; i < NTRU_N + 1; i++)
{
aux = f[i];
f[i] = g[i];
g[i] = aux;
aux = b[i];
b[i] = c[i];
c[i] = aux;
}
}
if (f[0] == g[0])
{
for (i = 0; i < NTRU_N + 1; i++)
{
f[i] = (f[i] - g[i] + 3) % 3;
b[i] = (b[i] - c[i] + 3) % 3;
}
}
else
{
for (i = 0; i < NTRU_N + 1; i++)
{
f[i] = (f[i] + g[i] + 3) % 3;
b[i] = (b[i] + c[i] + 3) % 3;
}
}
}
k = k % NTRU_N;
for (i = NTRU_N - 1; i >= 0; i--)
{
if (i - k < 0)
r->coeffs[i - k + NTRU_N] = b[i] * f[0];
else
r->coeffs[i - k] = b[i] * f[0];
}
for (i = 0; i < NTRU_N; i++)
r->coeffs[i] = (r->coeffs[i] + 3) % 3;
return 0;
}
But this seems to be wrong. I tested it using the example giveng in Wikipedia: https://en.wikipedia.org/wiki/NTRUEncrypt . The polynomial -1 + x + x^2 - x^4 + x^6 + x^9 - x^10 should have as inverse the polynomial 1 + 2x + 2x^3 + 2x^4 + x^5 + 2x^7 + x^8 - x^10 , but I got the following result:
Polinomial:
-1 1 1 0 -1 0 1 0 0 1 -1
Inverse polinomial:
0 2 2 1 0 2 1 2 0 1 2
Where is the error in the implementation?
I am writing a simple monte carlo code for simulation of electron scattering. I ran the Kernel for 10 million electron and it runs fine, but when I increase the number of electrons to a higher number, say 50 million, the code just wouldn't finish and the computer freezes. I wanted to know if this is a hardware issue or if there is a possible bug in the code. I am running the code on a iMac with ATI Radeon HD 5870.
int rand_r (unsigned int seed)
{
unsigned int next = seed;
int result;
next *= 1103515245;
next += 12345;
result = (unsigned int) (next / 65536) % 2048;
next *= 1103515245;
next += 12345;
result <<= 10;
result ^= (unsigned int) (next / 65536) % 1024;
next *= 1103515245;
next += 12345;
result <<= 10;
result ^= (unsigned int) (next / 65536) % 1024;
seed = next;
return result;
}
__kernel void MC(const float E, __global float* bse, const int count) {
int tx, ty;
tx = get_global_id(0);
ty = get_global_id(1);
float RAND_MAX = 2147483647.0f;
int rand_seed;
int seed = count*ty + tx;
float rand;
float PI;
PI = 3.14159f;
float z;
z = 28.0f;
float rho;
rho = 8.908f;
float A;
A = 58.69f;
int num;
num = 10000000/(count*count);
int counter, counter1, counter2;
counter = 0;
float4 c_new, r_new;
float E_new, alpha, de_ds, phi, psi, mfp,sig_eNA,step, dsq, dsqi, absc0z;
float J;
J = (9.76f*z + 58.5f*powr(z,-0.19f))*1E-3f;
float4 r0 = (float4)(0.0f, 0.0f, 0.0f, 0.0f);
float2 tilt = (float2)((70.0f/180.0f)*PI , 0.0f);
float4 c0 = (float4)(cos(tilt.y)*sin(tilt.x), sin(tilt.y)*sin(tilt.x), cos(tilt.x), 0.0f);
for (int i = 0; i < num; ++i){
rand_seed = rand_r(seed);
seed = rand_seed;
rand = rand_seed/RAND_MAX; //some random no. generator in gpu
r0 = (float4)(0.0f, 0.0f, 0.0f, 0.0f);
c0 = (float4)(cos(tilt.y)*sin(tilt.x), sin(tilt.y)*sin(tilt.x), cos(tilt.x), 0.0f);
E_new = E;
c_new = c0;
alpha = (3.4E-3f)*powr(z,0.67f)/E_new;
sig_eNA = (5.21f * 602.3f)*((z*z)/(E_new*E_new))*((4.0f*PI)/(alpha*(1+alpha)))*((E_new + 511.0f)*(E_new + 511.0f)/((E_new + 1024.0f)*(E_new + 1024.0f)));
mfp = A/(rho*sig_eNA);
step = -mfp * log(rand);
r_new = (float4)(r0.x + step*c_new.x, r0.y + step*c_new.y, r0.z + step*c_new.z, 0.0f);
r0 = r_new;
counter1 = 0;
counter2 = 0;
while (counter1 < 1000){
alpha = (3.4E-3f)*powr(z,0.67f)/E_new;
sig_eNA = (5.21f * 602.3f)*((z*z)/(E_new*E_new))*((4*PI)/(alpha*(1+alpha)))*((E_new + 511.0f)*(E_new + 511.0f)/((E_new + 1024.0f)*(E_new + 1024.0f)));
mfp = A/(rho*sig_eNA);
rand_seed = rand_r(seed);
seed = rand_seed;
rand = rand_seed/RAND_MAX; //some random no. generator in gpu
step = -mfp * log(rand);
de_ds = -78500.0f*(z/(A*E_new)) * log((1.66f*(E_new + 0.85f*J))/J);
rand_seed = rand_r(seed);
seed = rand_seed;
rand = rand_seed/RAND_MAX; //new random no.
phi = acos(1 - ((2*alpha*rand)/(1 + alpha - rand)));
rand_seed = rand_r(seed);
seed = rand_seed;
rand = rand_seed/RAND_MAX; //third random no.
psi = 2*PI*rand;
if ((c0.z >= 0.999f) || (c0.z <= -0.999f) ){
absc0z = abs(c0.z);
c_new = (float4)(sin(phi) * cos(psi), sin(phi) * sin(psi), (c0.z/absc0z)*cos(phi), 0.0f);
}
else {
dsq = sqrt(1-c0.z*c0.z);
dsqi = 1/dsq;
c_new = (float4)(sin(phi)*(c0.x*c0.z*cos(psi) - c0.y*sin(psi))*dsqi + c0.x*cos(phi), sin(phi) * (c0.y * c0.z * cos(psi) + c0.x * sin(psi)) * dsqi + c0.y * cos(phi), -sin(phi) * cos(psi) * dsq + c0.z * cos(phi), 0.0f);
}
r_new = (float4)(r0.x + step*c_new.x, r0.y + step*c_new.y, r0.z + step*c_new.z, 0.0f);
r0 = r_new;
c0 = c_new;
E_new += step*rho*de_ds;
if (r0.z <= 0 && counter2 == 0){
counter++ ;
counter2 = 1;
}
counter1++ ;
}
}
bse[count*ty + tx] = counter;
}
asking about speed or optimize the code
the kernel for sobel edge detection for gray img
When I run the program without any process only show input video and output(same as input) the frame per secounds fps=70 but when process down to 20 (process using GPU kernel for sobel)
Does anyone have an idea of how to speed up this code? I used local memory instead of global memory but the change is small.
How can I make all work items process the image?
sobel kernel
__kernel void hello_kernel(const __global uchar *input, __global uchar *output,const uint width,const uint height)
{
int x = get_global_id(0);
int y = get_global_id(1);
int index = width * y + x;
float a,b,c,d,e,f,g,h,i;
float8 v;
float sobelX = 0;
float sobelY = 0;
//if(index > width && index < (height*width)-width && (index % width-1) > 0 && (index % width-1) < width-1){
a = input[index-1-width] * -1.0f;
b =input[index-0-width] * 0.0f;
c = input[index+1-width] * +1.0f;
d = input[index-1] * -2.0f;
e = input[index-0] * 0.0f;
f = input[index+1] * +2.0f;
g = input[index-1+width] * -1.0f;
h = input[index-0+width] * 0.0f;
i = input[index+1+width] * +1.0f;
sobelX = a+b+c+d+e+f+g+h+i;
a = input[index-1-width] * -1.0f;
b = input[index-0-width] * -2.0f;
c = input[index+1-width] * -1.0f;
d = input[index-1] * 0.0f;
e = input[index-0] * 0.0f;
f = input[index+1] * 0.0f;
g = input[index-1+width] * +1.0f;
h = input[index-0+width] * +2.0f;
i = input[index+1+width] * +1.0f;
sobelY = a+b+c+d+e+f+g+h+i;
output[index] = sqrt(pow(sobelX,2) + pow(sobelY,2));
}
I had a requirement in Bullet physics with Opengl where I have modelview matrix but need to get the same matrix by calling gluLookAt. Thanks in advance.
From any 4x4 matrix we can get gluLookAt parameters which are CameraPos, CameraTarget, UpVector.
Here is the code to get CameraPos, CameraTarget, UpVector from ModelView matrix.
float modelViewMat[16];
glGetFloatv(GL_MODELVIEW_MATRIX, modelViewMat);
// Here instead of model view matrix we can pass any 4x4 matrix.
float params[9];
GetGluLookAtParameters(modelViewMat, params);
CameraPos.x = params[0];
CameraPos.y = params[1];
CameraPos.z = params[2];
CameraTarget.x = params[3];
CameraTarget.y = params[4];
CameraTarget.z = params[5];
UpVector.x = params[6];
UpVector.y = params[7];
UpVector.z = params[8];
void GetGluLookAtParameters(float* m, float* gluLookAtParams)
{
VECTOR3D sideVector(m[0], m[4], m[8]);
VECTOR3D upVector(m[1], m[5], m[9]);
VECTOR3D forwardVector(-m[2], -m[6], -m[10]);
sideVector.Normalize();
upVector.Normalize();
forwardVector.Normalize();
float rotMat[16];
memcpy(rotMat, m, 16*sizeof(float));
rotMat[12] = rotMat[13] = rotMat[14] = rotMat[3] = rotMat[7] = rotMat[11] = 0.0f;
rotMat[15] = 1.0f;
float rotInvert[16];
__gluInvertMatrixd(rotMat, rotInvert);
float transMat[16];
memset(transMat, 0, 16*sizeof(float));
transMat[0] = transMat[5] = transMat[10] = transMat[15] = 1.0f;
MultMat(rotInvert, m, transMat);
gluLookAtParams[0] = -transMat[12];
gluLookAtParams[1] = -transMat[13];
gluLookAtParams[2] = -transMat[14];
gluLookAtParams[3] = -transMat[12] + forwardVector.x;
gluLookAtParams[4] = -transMat[13] + forwardVector.y;
gluLookAtParams[5] = -transMat[14] + forwardVector.z;
gluLookAtParams[6] = upVector.x;
gluLookAtParams[7] = upVector.y;
gluLookAtParams[8] = upVector.z;
}
void MultMat(float* a, float* b, float* result)
{
result[0] = a[0]*b[0] + a[4]*b[1] + a[8]*b[2] + a[12]*b[3];
result[1] = a[1]*b[0] + a[5]*b[1] + a[9]*b[2] + a[13]*b[3];
result[2] = a[2]*b[0] + a[6]*b[1] + a[10]*b[2] + a[14]*b[3];
result[3] = a[3]*b[0] + a[7]*b[1] + a[11]*b[2] + a[15]*b[3];
result[4] = a[0]*b[4] + a[4]*b[5] + a[8]*b[6] + a[12]*b[7];
result[5] = a[1]*b[4] + a[5]*b[5] + a[9]*b[6] + a[13]*b[7];
result[6] = a[2]*b[4] + a[6]*b[5] + a[10]*b[6] + a[14]*b[7];
result[7] = a[3]*b[4] + a[7]*b[5] + a[11]*b[6] + a[15]*b[7];
result[8] = a[0]*b[8] + a[4]*b[9] + a[8]*b[10] + a[12]*b[11];
result[9] = a[1]*b[8] + a[5]*b[9] + a[9]*b[10] + a[13]*b[11];
result[10] = a[2]*b[8] + a[6]*b[9] + a[10]*b[10] + a[14]*b[11];
result[11] = a[3]*b[8] + a[7]*b[9] + a[11]*b[10] + a[15]*b[11];
result[12] = a[0]*b[12] + a[4]*b[13] + a[8]*b[14] + a[12]*b[15];
result[13] = a[1]*b[12] + a[5]*b[13] + a[9]*b[14] + a[13]*b[15];
result[14] = a[2]*b[12] + a[6]*b[13] + a[10]*b[14] + a[14]*b[15];
result[15] = a[3]*b[12] + a[7]*b[13] + a[11]*b[14] + a[15]*b[15];
}
int __gluInvertMatrixd(const float src[16], float inverse[16])
{
int i, j, k, swap;
float t;
GLfloat temp[4][4];
for (i=0; i<4; i++)
for (j=0; j<4; j++)
temp[i][j] = src[i*4+j];
for(int i=0;i<16;i++)
inverse[i] = 0;
inverse[0] = inverse[5] = inverse[10] = inverse[15] = 1.0f;
for(i=0; i<4; i++)
{
swap = i;
for (j = i + 1; j < 4; j++)
if (fabs(temp[j][i]) > fabs(temp[i][i]))
swap = j;
if (swap != i) {
//Swap rows.
for (k = 0; k < 4; k++) {
t = temp[i][k];
temp[i][k] = temp[swap][k];
temp[swap][k] = t;
t = inverse[i*4+k];
inverse[i*4+k] = inverse[swap*4+k];
inverse[swap*4+k] = t;
}
}
if (temp[i][i] == 0)
return 0;
t = temp[i][i];
for (k = 0; k < 4; k++) {
temp[i][k] /= t;
inverse[i*4+k] /= t;
}
for (j = 0; j < 4; j++) {
if (j != i) {
t = temp[j][i];
for (k = 0; k < 4; k++) {
temp[j][k] -= temp[i][k]*t;
inverse[j*4+k] -= inverse[i*4+k]*t;
}
}
}
}
return 1;
}
In the documentation, it says that list of windows returned by this method:
CFArrayRef windowList = CGWindowListCopyWindowInfo(kCGWindowListOptionOnScreenOnly, kCGNullWindowID);
will return windows in order from front to back. But it doesn't...The front most window should be test, but here's the out of this array:
2011-03-12 18:18:14.221 test[982:a0f] (
{
kCGWindowAlpha = 1;
kCGWindowBounds = {
Height = 22;
Width = 212;
X = 1662;
Y = 0;
};
kCGWindowIsOnscreen = 1;
kCGWindowLayer = 25;
kCGWindowMemoryUsage = 30104;
kCGWindowName = "";
kCGWindowNumber = 14;
kCGWindowOwnerName = SystemUIServer;
kCGWindowOwnerPID = 99;
kCGWindowSharingState = 1;
kCGWindowStoreType = 2;
},
{
kCGWindowAlpha = 0;
kCGWindowBounds = {
Height = 22;
Width = 1920;
X = 0;
Y = 0;
};
kCGWindowIsOnscreen = 1;
kCGWindowLayer = 25;
kCGWindowMemoryUsage = 5528;
kCGWindowNumber = 15;
kCGWindowOwnerName = SystemUIServer;
kCGWindowOwnerPID = 99;
kCGWindowSharingState = 1;
kCGWindowStoreType = 2;
},
{
kCGWindowAlpha = 1;
kCGWindowBounds = {
Height = 22;
Width = 46;
X = 1874;
Y = 0;
};
kCGWindowIsOnscreen = 1;
kCGWindowLayer = 25;
kCGWindowMemoryUsage = 5528;
kCGWindowName = "";
kCGWindowNumber = 12;
kCGWindowOwnerName = SystemUIServer;
kCGWindowOwnerPID = 99;
kCGWindowSharingState = 1;
kCGWindowStoreType = 2;
},
{
kCGWindowAlpha = 1;
kCGWindowBounds = {
Height = 22;
Width = 1920;
X = 0;
Y = 0;
};
kCGWindowIsOnscreen = 1;
kCGWindowLayer = 24;
kCGWindowMemoryUsage = 218520;
kCGWindowName = "Shared Menubar";
kCGWindowNumber = 6;
kCGWindowOwnerName = "Window Server";
kCGWindowOwnerPID = 73;
kCGWindowSharingState = 2;
kCGWindowStoreType = 2;
},
{
kCGWindowAlpha = 1;
kCGWindowBounds = {
Height = 1058;
Width = 1920;
X = 0;
Y = 22;
};
kCGWindowIsOnscreen = 1;
kCGWindowLayer = 20;
kCGWindowMemoryUsage = 1200;
kCGWindowNumber = 13;
kCGWindowOwnerName = Dock;
kCGWindowOwnerPID = 98;
kCGWindowSharingState = 1;
kCGWindowStoreType = 1;
},
{
kCGWindowAlpha = 1;
kCGWindowBounds = {
Height = 52;
Width = 676;
X = 622;
Y = 1028;
};
kCGWindowIsOnscreen = 1;
kCGWindowLayer = 19;
kCGWindowMemoryUsage = 157080;
kCGWindowName = "Magic Mirror";
kCGWindowNumber = 16;
kCGWindowOwnerName = Dock;
kCGWindowOwnerPID = 98;
kCGWindowSharingState = 2;
kCGWindowStoreType = 2;
},
{
kCGWindowAlpha = 1;
kCGWindowBounds = {
Height = 382;
Width = 480;
X = 335;
Y = 367;
};
kCGWindowIsOnscreen = 1;
kCGWindowLayer = 0;
kCGWindowMemoryUsage = 792496;
kCGWindowName = test;
kCGWindowNumber = 252;
kCGWindowOwnerName = test;
kCGWindowOwnerPID = 982;
kCGWindowSharingState = 1;
kCGWindowStoreType = 2;
kCGWindowWorkspace = 1;
},
{
kCGWindowAlpha = 1;
kCGWindowBounds = {
Height = 807;
Width = 1206;
X = 321;
Y = 157;
};
kCGWindowIsOnscreen = 1;
kCGWindowLayer = 0;
kCGWindowMemoryUsage = 4055280;
kCGWindowName = "AppDelegate.m - test";
kCGWindowNumber = 24;
kCGWindowOwnerName = Xcode;
kCGWindowOwnerPID = 132;
kCGWindowSharingState = 1;
kCGWindowStoreType = 2;
kCGWindowWorkspace = 1;
},
{
kCGWindowAlpha = 1;
kCGWindowBounds = {
Height = 967;
Width = 960;
X = 175;
Y = 22;
};
kCGWindowIsOnscreen = 1;
kCGWindowLayer = 0;
kCGWindowMemoryUsage = 3817968;
kCGWindowName = "test - Debugger Console";
kCGWindowNumber = 31;
kCGWindowOwnerName = Xcode;
kCGWindowOwnerPID = 132;
kCGWindowSharingState = 1;
kCGWindowStoreType = 2;
kCGWindowWorkspace = 1;
},
{
kCGWindowAlpha = 1;
kCGWindowBounds = {
Height = 967;
Width = 1845;
X = 121;
Y = 22;
};
kCGWindowIsOnscreen = 1;
kCGWindowLayer = 0;
kCGWindowMemoryUsage = 882288;
kCGWindowName = "CocoaDev Forums - get focused window id";
kCGWindowNumber = 80;
kCGWindowOwnerName = "Google Chrome";
kCGWindowOwnerPID = 244;
kCGWindowSharingState = 1;
kCGWindowStoreType = 2;
kCGWindowWorkspace = 1;
},
{
kCGWindowAlpha = 1;
kCGWindowBounds = {
Height = 784;
Width = 885;
X = 560;
Y = 157;
};
kCGWindowIsOnscreen = 1;
kCGWindowLayer = 0;
kCGWindowMemoryUsage = 318768;
kCGWindowName = "Console Messages";
kCGWindowNumber = 125;
kCGWindowOwnerName = Console;
kCGWindowOwnerPID = 482;
kCGWindowSharingState = 1;
kCGWindowStoreType = 2;
kCGWindowWorkspace = 1;
},
{
kCGWindowAlpha = 1;
kCGWindowBounds = {
Height = 494;
Width = 1167;
X = 519;
Y = 417;
};
kCGWindowIsOnscreen = 1;
kCGWindowLayer = 0;
kCGWindowMemoryUsage = 2441264;
kCGWindowName = Debug;
kCGWindowNumber = 54;
kCGWindowOwnerName = Finder;
kCGWindowOwnerPID = 100;
kCGWindowSharingState = 1;
kCGWindowStoreType = 2;
kCGWindowWorkspace = 1;
},
{
kCGWindowAlpha = 1;
kCGWindowBounds = {
Height = 382;
Width = 480;
X = 335;
Y = 367;
};
kCGWindowIsOnscreen = 1;
kCGWindowLayer = 0;
kCGWindowMemoryUsage = 55216;
kCGWindowName = test;
kCGWindowNumber = 223;
kCGWindowOwnerName = test;
kCGWindowOwnerPID = 849;
kCGWindowSharingState = 1;
kCGWindowStoreType = 2;
kCGWindowWorkspace = 1;
},
{
kCGWindowAlpha = 1;
kCGWindowBounds = {
Height = 437;
Width = 770;
X = 396;
Y = 308;
};
kCGWindowIsOnscreen = 1;
kCGWindowLayer = 0;
kCGWindowMemoryUsage = 238512;
kCGWindowName = Applications;
kCGWindowNumber = 19;
kCGWindowOwnerName = Finder;
kCGWindowOwnerPID = 100;
kCGWindowSharingState = 1;
kCGWindowStoreType = 2;
kCGWindowWorkspace = 1;
},
{
kCGWindowAlpha = 1;
kCGWindowBounds = {
Height = 437;
Width = 770;
X = 450;
Y = 429;
};
kCGWindowIsOnscreen = 1;
kCGWindowLayer = 0;
kCGWindowMemoryUsage = 332720;
kCGWindowName = Applications;
kCGWindowNumber = 17;
kCGWindowOwnerName = Finder;
kCGWindowOwnerPID = 100;
kCGWindowSharingState = 1;
kCGWindowStoreType = 2;
kCGWindowWorkspace = 1;
},
{
kCGWindowAlpha = 1;
kCGWindowBounds = {
Height = 14;
Width = 1920;
X = 0;
Y = 22;
};
kCGWindowIsOnscreen = 1;
kCGWindowLayer = "-20";
kCGWindowMemoryUsage = 5528;
kCGWindowName = "Backstop Menubar";
kCGWindowNumber = 11;
kCGWindowOwnerName = "Window Server";
kCGWindowOwnerPID = 73;
kCGWindowSharingState = 1;
kCGWindowStoreType = 2;
},
{
kCGWindowAlpha = 1;
kCGWindowBounds = {
Height = 1080;
Width = 1920;
X = 0;
Y = 0;
};
kCGWindowIsOnscreen = 1;
kCGWindowLayer = "-2147483627";
kCGWindowMemoryUsage = 1200;
kCGWindowName = "";
kCGWindowNumber = 10;
kCGWindowOwnerName = Finder;
kCGWindowOwnerPID = 100;
kCGWindowSharingState = 1;
kCGWindowStoreType = 1;
},
{
kCGWindowAlpha = 1;
kCGWindowBounds = {
Height = 1080;
Width = 1920;
X = 0;
Y = 0;
};
kCGWindowIsOnscreen = 1;
kCGWindowLayer = "-2147483628";
kCGWindowMemoryUsage = 8328600;
kCGWindowName = Desktop;
kCGWindowNumber = 2;
kCGWindowOwnerName = "Window Server";
kCGWindowOwnerPID = 73;
kCGWindowSharingState = 2;
kCGWindowStoreType = 2;
}
)
What's SystemUIServer, dock and magic mirror? These aren't my front most apps. Thanks!
Grab a copy of Apple's sample app: Son Of Grab. Then build and run it, and you'll have a very handy interactive app for investigating all the windows known to the window server.
The answer to your question is that windows are ordered front to back, but there are far more user interface elements defined as windows than you are expecting. This includes the menubar, the dock, the services menu, the Desktop, etc. These are defined at different levels, corresponding to kCGWindowLayer in your output.
You want the first window defined at the standard window level (zero). And if you look at your output, the first window with kCGWindowLayer == 0 is in fact the 7th.
SystemUIServer is the top menu bar. Dock is the Dock (usually at the bottom of the screen). I'm not familiar with "Magic Mirror." You can look for it on your system with lsregister:
`locate lsregister` -dump
Search the output for "Magic Mirror".