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try switching vertices 1 and 2 to see if the triangle isn't facing the other way.
- Viewing Profile: Posts: Such1
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In Topic: (Solved)Render 3D Triangle List
07 January 2013 - 11:20 PM
In Topic: Simulating CRT persistence?
03 December 2012 - 07:45 PM
Why do you have this? float blendFactors[] = {.99, .97, .9, 0};
shouldn't it be something like:
float blendFactors[] = {.9, .9, .9, .9};
And no, it will never fade completely(theoretically), but it should get really close.
shouldn't it be something like:
float blendFactors[] = {.9, .9, .9, .9};
And no, it will never fade completely(theoretically), but it should get really close.
In Topic: How would I get 3D co-ordinates from cursor position?
03 December 2012 - 01:02 AM
I assume you already have the camera position, which I'll call m_cameraPosition.
this returns the mouse direction in 3D:
getCameraMatrix() returns the camera view matrix
m_perspectiveProjection is the projection matrix
m_width and m_height are the size of the screen
getMousePosition() returns the client mouse position
so the final position would be:
rayDir * distance + m_cameraPosition;
change distance as you desire, or calculate it if you need that z = 50
this returns the mouse direction in 3D:
POINT mp = getMousePosition(); D3DXVECTOR3 v; v.x = ( ( ( 2.0f * mp.x ) / m_width ) - 1 ) / m_perspectiveProjection._11; v.y = -( ( ( 2.0f * mp.y ) / m_height ) - 1 ) / m_perspectiveProjection._22; v.z = 1.0f; D3DXMATRIX m; D3DXVECTOR3 rayDir; D3DXMatrixInverse( &m, NULL, &getCameraMatrix() ); // Transform the screen space pick ray into 3D space rayDir.x = v.x*m._11 + v.y*m._21 + v.z*m._31; rayDir.y = v.x*m._12 + v.y*m._22 + v.z*m._32; rayDir.z = v.x*m._13 + v.y*m._23 + v.z*m._33; return rayDir;.
getCameraMatrix() returns the camera view matrix
m_perspectiveProjection is the projection matrix
m_width and m_height are the size of the screen
getMousePosition() returns the client mouse position
so the final position would be:
rayDir * distance + m_cameraPosition;
change distance as you desire, or calculate it if you need that z = 50
In Topic: Simulating CRT persistence?
02 December 2012 - 08:33 PM
You have 2 backBuffer, you should do something like this:
clean both buffers
loop:
render buffer1 on buffer2 with 90%
clean buffer1
render what you want on buffer 2
switch places between buffer 1 and 2
your image is now on buffer1
clean both buffers
loop:
render buffer1 on buffer2 with 90%
clean buffer1
render what you want on buffer 2
switch places between buffer 1 and 2
your image is now on buffer1
In Topic: Simulating CRT persistence?
02 December 2012 - 05:33 PM
I think you are not clearing the buffers after u used them.
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