D3D10_VIEWPORT vp;
vp.TopLeftX = 0;
vp.TopLeftY = 0;
vp.Width = mClientWidth/2;
vp.Height = mClientHeight;
vp.MinDepth = 0.0f;
vp.MaxDepth = 1.0f;
D3D10_VIEWPORT vp2;
vp.TopLeftX = mClientWidth/2;
vp.TopLeftY = 0;
vp.Width = mClientWidth/2;
vp.Height = mClientHeight;
vp.MinDepth = 0.0f;
vp.MaxDepth = 1.0f;
md3dDevice->RSSetViewports(2, &vp);
md3dDevice->RSSetViewports(2, &vp2);
Seperate viewports
Author
hi guys i am trying to render 2 viewports because i want to be able to do a sort of split screen game.
i tried this
but to no avail i simply get a viewport in the right hand side of the screen
RSSetViewports()'s second argument is an array of view ports. Put your two view ports into an array and call it once.
Author
so i tried the following
but i get a runtime error stating
Run-Time Check Failure #2 - Stack around the variable 'vp' was corrupted.
what am i doing wrong can you please help me?
D3D10_VIEWPORT vp[1]; vp[0].TopLeftX = 0; vp[0].TopLeftY = 0; vp[0].Width = mClientWidth/2; vp[0].Height = mClientHeight; vp[0].MinDepth = 0.0f; vp[0].MaxDepth = 1.0f; vp[1].TopLeftX = mClientWidth/2; vp[1].TopLeftY = 0; vp[1].Width = mClientWidth/2; vp[1].Height = mClientHeight; vp[1].MinDepth = 0.0f; vp[1].MaxDepth = 1.0f; md3dDevice->RSSetViewports(2, &vp[1]);but i get a runtime error stating
Run-Time Check Failure #2 - Stack around the variable 'vp' was corrupted.
what am i doing wrong can you please help me?
This line:
D3D10_VIEWPORT vp[1];
defines an array of length 1. You wrote two values to the array. This is a buffer overflow.
D3D10_VIEWPORT vp[1];
defines an array of length 1. You wrote two values to the array. This is a buffer overflow.
Author
ah thought [1] defined an array of length 2 because i thought [0] counted as 1.
Ahh well you live you learn.
Anyways now that i have that working my viewports are now not showing anything. just a blank screen
Ahh well you live you learn.
Anyways now that i have that working my viewports are now not showing anything. just a blank screen
That might have something to do with the fact that you're passing the address of the second element to the function rather than the first.
Author
ok so i tried to pass the array to the function but i get the error
cannot convert parameter 2 from 'D3D10_VIEWPORT (*)[2]' to 'const D3D10_VIEWPORT *'
here is my source
cannot convert parameter 2 from 'D3D10_VIEWPORT (*)[2]' to 'const D3D10_VIEWPORT *'
here is my source
D3D10_VIEWPORT vp[2]; vp[0].TopLeftX = 0; vp[0].TopLeftY = 0; vp[0].Width = mClientWidth/2; vp[0].Height = mClientHeight; vp[0].MinDepth = 0.0f; vp[0].MaxDepth = 1.0f; vp[1].TopLeftX = mClientWidth/2; vp[1].TopLeftY = 0; vp[1].Width = mClientWidth/2; vp[1].Height = mClientHeight; vp[1].MinDepth = 0.0f; vp[1].MaxDepth = 1.0f; md3dDevice->RSSetViewports(1, &vp);
Give some serious thought to learning C++ before messing with DirectX. You're getting stuck on some really simple things. Find a good C++ book and work through the exercises.
In any case, you can get the address of the first element of an array by either using &vp[0] or just vp.
In any case, you can get the address of the first element of an array by either using &vp[0] or just vp.
Author
ok sorry i will start to review my knowledge of C++.
p.s i did try &vp[0] but i got a syntax error.
p.s i did try &vp[0] but i got a syntax error.
And did you try vp without the &?
Your last posted code also has '1' for the number of viewports, so only the first one will count there.
Your last posted code also has '1' for the number of viewports, so only the first one will count there.
This topic is closed to new replies.
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