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## problem in resizing the swapchain buffers

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### #1clearner1  Members

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Posted 20 August 2014 - 06:02 AM

this is in 640 x 480 window picture

http://prntscr.com/4emyyi

this is when switching to full screen mode

http://prntscr.com/4emzab

this is the resizing code

void Game::onResize(){
RECT rc;
GetClientRect(_hwnd,&rc);
width=rc.right - rc.left;
height=rc.bottom - rc.top;
Directx11 :: onResize();  //swapchain new setting
XMMATRIX Pro=XMMatrixPerspectiveFovLH((float)3.14 / 4,AspectRatio(),1.0f,1000.0f);
XMStoreFloat4x4(&Proj,Pro);
}


Directx11::onresize()

void Directx11::onResize(){
RECT rc;
GetClientRect(_hwnd,&rc);
width = rc.right - rc.left;
height = rc.bottom - rc.top;
swapchain -> ResizeBuffers(1,width,height,DXGI_FORMAT_R8G8B8A8_UNORM,0);
ReleaseCOM(RenderTarget);
ReleaseCOM(depth);
ReleaseCOM(depthview);
ID3D11Texture2D *back;
HR(swapchain ->GetBuffer(0,__uuidof(ID3D11Texture2D),reinterpret_cast <void**> (&back)));
HR(d3dDevice -> CreateRenderTargetView(back,0,&RenderTarget));
D3D11_TEXTURE2D_DESC desc;
ZeroMemory(&desc,sizeof(D3D11_TEXTURE2D_DESC));
desc.ArraySize=1;
desc.BindFlags=D3D11_BIND_DEPTH_STENCIL;
desc.Format=DXGI_FORMAT_D24_UNORM_S8_UINT;
desc.MipLevels=1;
desc.Width= width;
desc.Height=height;
if (m4xMsaaEnable)
{
desc.SampleDesc.Count = 4;
desc.SampleDesc.Quality=m4xMsaaQuality-1;
}
else
{
desc.SampleDesc.Count = 1;
desc.SampleDesc.Quality=0;
}
HR(d3dDevice->CreateTexture2D(&desc,0,&depthview));
HR(d3dDevice-> CreateDepthStencilView(depthview,0,&depth));
d3dDeviceContext->OMSetRenderTargets(1,&RenderTarget,depth);
D3D11_VIEWPORT vp;
vp.TopLeftX=0.0f;
vp.TopLeftY=0.0f;
vp.Width = static_cast <float> (width);
vp.Height= static_cast <float> (height);
vp.MinDepth = 0.0f;
vp.MaxDepth = 1.0f;
}


### #2mhagain  Members

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Posted 20 August 2014 - 06:08 AM

First problem I can see is that you should release your stuff before calling ResizeBuffers, not after.  See http://msdn.microsoft.com/en-us/library/windows/desktop/bb174577%28v=vs.85%29.aspx

You can't resize a swap chain unless you release all outstanding references to its back buffers. You must release all of its direct and indirect references on the back buffers in order for ResizeBuffers to succeed.

Calling ID3D11DeviceContext::ClearState is also advisable to ensure that everything that needs to be cleared out is cleared out.

Get those right first and see if your problem continues, then post an update please.

It appears that the gentleman thought C++ was extremely difficult and he was overjoyed that the machine was absorbing it; he understood that good C++ is difficult but the best C++ is well-nigh unintelligible.

### #3clearner1  Members

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Posted 21 August 2014 - 04:04 AM

i tried it ....no changes

still the same problem

### #4Buckeye  GDNet+

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Posted 21 August 2014 - 05:49 AM

i tried it ....no changes

What does "it" mean? Did you release resources before resizing, call ClearState, or both? Post the revised code.

How do you set the window to fullscreen?

Also, from your posted pix, it appears that the eye-point (view matrix) has changed between the two screen shots. Where/how do you change the view matrix?

Please don't PM me with questions. Post them in the forums for everyone's benefit, and I can embarrass myself publicly.

You don't forget how to play when you grow old; you grow old when you forget how to play.

### #5js09427  Members

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Posted 21 August 2014 - 06:55 PM

It looks good aside from releasing your stuff after the resize instead of before. Maybe the value returned by AspectRatio() is off?

Try replacing it with ( float )width / ( float )height.

### #6clearner1  Members

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Posted 22 August 2014 - 01:32 AM

yes i release the stuff and called d3ddevicecontext->ClearState()  before resizing ....do you have to change the view matrix?....i thought Directx updates coordantes scaling when you call swapchain->rsizebuffers()....if so i suppose i dont need to change the view matrix.....

It looks good aside from releasing your stuff after the resize instead of before. Maybe the value returned by AspectRatio() is off?

Try replacing it with ( float )width / ( float )height.

AspectRatio() is

float AspectRatio()const{
return static_cast <float> (width) / height;
} 

here is the code for resizing......

void Directx11::onResize(){
RECT rc;
GetClientRect(_hwnd,&rc);
width = rc.right - rc.left;
height = rc.bottom - rc.top;
ReleaseCOM(RenderTarget);
ReleaseCOM(depth);
ReleaseCOM(depthview);
d3dDeviceContext->ClearState();
swapchain -> ResizeBuffers(1,width,height,DXGI_FORMAT_R8G8B8A8_UNORM,0);
ID3D11Texture2D *back;
HR(swapchain ->GetBuffer(0,__uuidof(ID3D11Texture2D),reinterpret_cast <void**> (&back)));
HR(d3dDevice -> CreateRenderTargetView(back,0,&RenderTarget));
D3D11_TEXTURE2D_DESC desc;
ZeroMemory(&desc,sizeof(D3D11_TEXTURE2D_DESC));
desc.ArraySize=1;
desc.BindFlags=D3D11_BIND_DEPTH_STENCIL;
desc.Format=DXGI_FORMAT_D24_UNORM_S8_UINT;
desc.MipLevels=1;
desc.Width= width;
desc.Height=height;
if (m4xMsaaEnable)
{
desc.SampleDesc.Count = 4;
desc.SampleDesc.Quality=m4xMsaaQuality-1;
}
else
{
desc.SampleDesc.Count = 1;
desc.SampleDesc.Quality=0;
}
HR(d3dDevice->CreateTexture2D(&desc,0,&depthview));
HR(d3dDevice-> CreateDepthStencilView(depthview,0,&depth));
d3dDeviceContext->OMSetRenderTargets(1,&RenderTarget,depth);
D3D11_VIEWPORT vp;
vp.TopLeftX=0.0f;
vp.TopLeftY=0.0f;
vp.Width = static_cast <float> (width);
vp.Height= static_cast <float> (height);
vp.MinDepth = 0.0f;
vp.MaxDepth = 1.0f;
}


### #7Buckeye  GDNet+

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Posted 22 August 2014 - 08:06 AM

i thought Directx updates coordantes scaling when you call swapchain->rsizebuffers()....if so i suppose i dont need to change the view matrix....

1. With regard to "update" of coordinate scaling: No. ResizeBuffers doesn't change the the viewport, or world, projection and view matrices.

2. I didn't say you NEED to change the view matrix. As you suspect, you shouldn't need to. I said, from the pictures, it appears you DID change it. The small green cube appears in a different relationship to the wireframe cube in that view. If you change nothing but the backbuffer and window client sizes, do your drawing using 3D world coordinates, and use the same world/view/projection matrices, the scene should look the same (ignoring aspect ratio). So the second picture appears to have been rendered with a different world or view or projection matrix.

If your posted code works correctly (and it seems to be correct now), then the problem lies elsewhere. We can't help you unless you provide more information. If you post code as requested, at worst, it will indicate other areas that are not the problem and help narrow the search.

Edited by Buckeye, 22 August 2014 - 08:25 AM.

Please don't PM me with questions. Post them in the forums for everyone's benefit, and I can embarrass myself publicly.

You don't forget how to play when you grow old; you grow old when you forget how to play.

### #8clearner1  Members

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Posted 23 August 2014 - 01:41 AM

ok ..this the initialization routine

bool Directx11::init(HINSTANCE hinst,HWND hw){
_hinst=hinst;_hwnd=hw;
RECT rc;
GetClientRect(_hwnd,&rc);
height= rc.bottom - rc.top;
width = rc.right - rc.left;
UINT flags=0;
#ifdef _DEBUG
flags |=D3D11_CREATE_DEVICE_DEBUG;
#endif
HR(D3D11CreateDevice(0,_driverType,0,flags,0,0,D3D11_SDK_VERSION,&d3dDevice,&_featureLevel,&d3dDeviceContext));
if (d3dDevice == 0 || d3dDeviceContext == 0)
return 0;
DXGI_SWAP_CHAIN_DESC sdesc;
HR(d3dDevice->CheckMultisampleQualityLevels(DXGI_FORMAT_R8G8B8A8_UNORM,4,&m4xMsaaQuality));
m4xMsaaEnable=true;
ZeroMemory(&sdesc,sizeof(DXGI_SWAP_CHAIN_DESC));
sdesc.Windowed=true;
sdesc.BufferCount=1;
sdesc.BufferDesc.Format=DXGI_FORMAT_R8G8B8A8_UNORM;
sdesc.BufferDesc.Height=height;
sdesc.BufferDesc.Width=width;
sdesc.BufferDesc.Scaling=DXGI_MODE_SCALING_UNSPECIFIED;
sdesc.BufferDesc.ScanlineOrdering=DXGI_MODE_SCANLINE_ORDER_UNSPECIFIED;
sdesc.OutputWindow=_hwnd;
sdesc.BufferDesc.RefreshRate.Denominator=1;
sdesc.BufferDesc.RefreshRate.Numerator=60;
sdesc.Flags=0;
sdesc.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
if (m4xMsaaEnable)
{
sdesc.SampleDesc.Count=4;
sdesc.SampleDesc.Quality=m4xMsaaQuality-1;
}
else
{
sdesc.SampleDesc.Count=1;
sdesc.SampleDesc.Quality=0;
}
IDXGIDevice *Device=0;
HR(d3dDevice->QueryInterface(__uuidof(IDXGIDevice),reinterpret_cast <void**> (&Device)));
IDXGIFactory* fac=0;
fac->CreateSwapChain(d3dDevice,&sdesc,&swapchain);
ReleaseCOM(Device);
ReleaseCOM(fac);
ID3D11Texture2D *back = 0;
HR(swapchain->GetBuffer(0,__uuidof(ID3D11Texture2D),reinterpret_cast <void**> (&back)));
HR(d3dDevice->CreateRenderTargetView(back,0,&RenderTarget));
D3D11_TEXTURE2D_DESC Tdesc;
ZeroMemory(&Tdesc,sizeof(D3D11_TEXTURE2D_DESC));
Tdesc.BindFlags = D3D11_BIND_DEPTH_STENCIL;
Tdesc.ArraySize = 1;
Tdesc.Format= DXGI_FORMAT_D24_UNORM_S8_UINT;
Tdesc.Height= height;
Tdesc.Width = width;
Tdesc.Usage = D3D11_USAGE_DEFAULT;
Tdesc.MipLevels=1;
if (m4xMsaaEnable)
{
Tdesc.SampleDesc.Count=4;
Tdesc.SampleDesc.Quality=m4xMsaaQuality-1;
}
else
{
Tdesc.SampleDesc.Count=1;
Tdesc.SampleDesc.Quality=0;
}
HR(d3dDevice->CreateTexture2D(&Tdesc,0,&depthview));
HR(d3dDevice->CreateDepthStencilView(depthview,0,&depth));
d3dDeviceContext->OMSetRenderTargets(1,&RenderTarget,depth);
D3D11_VIEWPORT vp;
vp.TopLeftX=0.0f;
vp.TopLeftY=0.0f;
vp.Width = static_cast <float> (width);
vp.Height= static_cast <float> (height);
vp.MinDepth = 0.0f;
vp.MaxDepth = 1.0f;
return true;
}


and this is the function that updates the view matrix and the app scenes

this need some explanation so you dont waste your time trying to understand ....

this function job is update the world matrices every one second (3D Tetris app) droping a box from above every 10 secs ..... so it will need about 10 secs to reach the bottom until it drops another box.......the B variable contains every possible step  (small cubes world matrices) ....currentitem variable is to store the currently dropping box to move if the user clicked arrows buttons ........also updating the view matrix every frame....the view matrix updating is at the bottom of the function

void Game::Update(float dt){
static float T = 0.0f,T2=0.0;
T = T + dt;T2 += dt;
UINT ge;
if ((T * 1000.0f)>= 1000.0f)
{
UINT mon = B.GetSize();
for (UINT i = 1; i < mon ; i++)
{
UINT si=B.Memory[i].filledindeces.size(),si2 = B.Memory[i-1].filledindeces.size();
for (UINT r = 0; r < si; r++)
{
ge =B.Memory[i].filledindeces.back();
for (UINT kll = 0; kll < si2; kll++)
{
if (ge == B.Memory[i-1].filledindeces[kll])
{
ge = 10000;
}
}
if (ge == 10000) {
if(i == 9)
{
MessageBoxA(_hwnd,"you lost\nTerminating...","Game Over",MB_ICONINFORMATION);
exit(1);
}
continue;
}
B.Memory[i].filledindeces.pop_back();
B.Memory[i - 1].filledindeces.push_back(ge);
currentItem.Height=i-1;
}
}
T=0.0f;
int ra = rand();
if(ra<0) ra = -1* ra;
if ((T2 * 1000.0f) >= 10000.0f)
{
T2 = 0.0f;
while(!(ra >=0 && ra <36)){
ra = rand();
}
B.Memory[9].filledindeces.push_back(ra);
currentItem.Floor_Index=ra;
currentItem.Height=9;
}
}

float x=radius * sinf(phi) * cosf(theta);
float z=radius * sinf(phi) * sinf(theta);
XMMATRIX V;
XMVECTOR Foc = XMVectorSet(B.Memory[8].Pieces[18]._11,B.Memory[8].Pieces[18]._22,B.Memory[8].Pieces[18]._33,1.0f),
Up = XMVectorSet(0.0f,1.0f,0.0f,0.0f),
Pos= XMVectorSet(x , y ,z,1.0f);
V=XMMatrixLookAtLH(Pos,Foc,Up);
XMStoreFloat4x4(&View,V);
}


this the rendering function

void Game::Render(){
d3dDeviceContext->ClearRenderTargetView(RenderTarget,reinterpret_cast <const float*> (&Colors::LightSteelBlue));
d3dDeviceContext->ClearDepthStencilView(depth,D3D11_CLEAR_DEPTH | D3D11_CLEAR_STENCIL,1.0f,0);

d3dDeviceContext-> IASetInputLayout(_layout);
d3dDeviceContext-> IASetPrimitiveTopology(D3D11_PRIMITIVE_TOPOLOGY_TRIANGLELIST);
d3dDeviceContext->IASetIndexBuffer(indices,DXGI_FORMAT_R32_UINT,0);
UINT strides=sizeof(Vertex),off=0;
d3dDeviceContext->IASetVertexBuffers(0,1,&vertices,&strides,&off);

D3DX11_TECHNIQUE_DESC des;
Tech->GetDesc(&des);
Floor * Lookup;
std::vector<XMFLOAT4X4> filled;
XMMATRIX vp = V * P;
XMMATRIX wvp;
for (UINT i = 0; i < des.Passes; i++)
{
HR(Tech->GetPassByIndex(i)->Apply(0,d3dDeviceContext));

d3dDeviceContext-> DrawIndexed(build_ind_count,build_ind_index,build_vers_index);
UINT r1=10;
for (UINT j = 0; j < r1; j++)
{
Lookup = &B.Memory[j];
for (UINT r = 0; r < Lookup->filledindeces.size(); r++)
{
filled.push_back(Lookup->Pieces[Lookup->filledindeces[r]]);
}
}
UINT r2=filled.size();
for (UINT j = 0; j < r2; j++)
{
Tech->GetPassByIndex(i)->Apply(0,d3dDeviceContext);
d3dDeviceContext->DrawIndexed(piese_ind_count,piese_ind_index,piese_vers_index);

}

filled.clear();
}
HR(swapchain->Present(0,0));
}


thanks for you time

Edited by clearner1, 23 August 2014 - 02:10 AM.

### #9Buckeye  GDNet+

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Posted 23 August 2014 - 07:44 AM

This is embarrassing. I assumed from your pictures you had a problem with the scene view when switching resolutions. My fault. You haven't really described your problem.

Please don't PM me with questions. Post them in the forums for everyone's benefit, and I can embarrass myself publicly.

You don't forget how to play when you grow old; you grow old when you forget how to play.

### #10clearner1  Members

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Posted 23 August 2014 - 02:54 PM

the funny thing is i didn't even notice something weird ....i posted the resizing function and you didn't see something wrong in it so you asked for the complete code you were making sense ....anyway my problem is when i switch to full screen ....the drawing and the box all gets messed up....the first picture where the program works correctly(windowed)....the second switched to full screen the box gets drawn a bit away from the camera .........

### #11Buckeye  GDNet+

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Posted 23 August 2014 - 06:37 PM

Have you tried setting the world, view and projection matrices to some constant values not related to what you are rendering? I'm afraid your code is a bit too convoluted to decipher what you intend when you set the view matrix. If constant values for the matrices renders properly, you should compare the vectors you produce in your routine to create the view matrix, in windowed mode and fullscreen mode to determine what is different.

Please don't PM me with questions. Post them in the forums for everyone's benefit, and I can embarrass myself publicly.

You don't forget how to play when you grow old; you grow old when you forget how to play.

### #12clearner1  Members

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Posted 24 August 2014 - 07:21 AM

do you mean like this line

wvp = XMLoadFloat4x4(&(B.Memory[0].Pieces[35])) * vp;



i am sorry i didn't name the variables to be understandable .....B is variable that contains of world matrices of any possible step for the falling small cubes(tetris-like)

it contains of

struct BUILD     //BUILD B;
{
std::vector <Floor> Memory;
BUILD(){
Memory.resize(10);   // i got 10 floors
}
UINT GetSize(){
return Memory.size();
}
};
struct Floor{
XMFLOAT4X4 Pieces[36];          //Floor contains 36 possible step
std::vector <UINT> filledindeces;// contains the indices of the filled matrices
};

//this is how i set the B variable
void Game::SetBuild(){
float x=0,y=0,z=0;
XMMATRIX tMat;
Floor tFloor;//temporary varaible to set floor matrices one by one
UINT re = B.GetSize(); //B is a member variable
for (UINT i = 0; i < re ; i++)
{
x=0;z=0;
for (int j = 0; j < 36; j++)
{
tMat = XMMatrixTranslation(x,y,z);
XMStoreFloat4x4(&tFloor.Pieces[j],tMat);
if (j == 35)
{
y+= heightoff;  // hieghtoff = height / 10
x=0;
z=0;
continue;
}
if ((j+1) % 6 == 0)
{
x -= widthoff; //widthoff = width / 6
z = 0;
continue;
}
z -= depthoff; //depthoff = depth / 6
}
B.Memory[i]=tFloor;
}
B.Memory[9].filledindeces.push_back(10); //drop a box from the 10th floor at index 10
currentItem.Floor_Index=10;
//currentItem is a member variable for tracking the currently falling box to move it when the user press buttons
currentItem.Height=9;
}


well i didn't mention it because i am sure there is no problem here

....those  matrices are already constant i call setBuild() in the first initializations ..... i dont change them at all .....

### #13Buckeye  GDNet+

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Posted 24 August 2014 - 08:06 AM

You're probably going to have to try doing something other than posting code to determine where the problem lies. I'm not big at all on just staring at code to find problems. I strongly suggest you actually examine values or change something to provide yourself and others with some sort of information to narrow down the problem. I do hope you find the problem eventually.

Edited by Buckeye, 24 August 2014 - 08:07 AM.

Please don't PM me with questions. Post them in the forums for everyone's benefit, and I can embarrass myself publicly.

You don't forget how to play when you grow old; you grow old when you forget how to play.

### #14clearner1  Members

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Posted 24 August 2014 - 10:02 AM

i already tried something .....i patched the program to never call onResize() and it works except that it is low quality....low quality problem is easy to solve(increasing resolution)...but that means i need to patch it also to be unable to resize window...the problem is kind of fixed....that means the problem where on resize function...isn't there any kind of rules or special condition (like releasing the buffers before calling swapchain->resizebuffers())...

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