Windows DirectX

-------------------- 

95      None

95B     DX3 (Supports up to DX8)

NT      DX2

NT SP4  DX3

98      DX5

98SE    DX6

ME      DX7.1

2000    DX7.1

XP      DX8.1



XP SP2  DX9

D3DXVECTOR3 forward(camera_matrix._31, camera_matrix._32, camera_matrix._33);
camera_position += displacement * forward;

// Load-time

(1) Create the ID3DXSprite object, using the D3DXCreateSprite factory function.

(2) Load your textures

// Run-time

(1) Call ID3DXSprite::Begin()

(2) For each texture you want to render

   (a) Build the translation matrix

   (b) Call ID3DXSprite::Draw()

(3) Call ID3DXSprite::End()

D3DRS_LIGHTING

| D3DRS_COLORVERTEX

| | D3DFVF_DIFFUSE in vertex

| | | Result

---------------------------- 

0 0 0 White

0 1 0 White

0 1 0 White

0 1 1 Vertex Color

1 0 0 Material Color * Light

1 0 1 Material Color * Light

1 1 0 Material Color * Light

1 1 1 (Material Or Vertex Color) * Light

000122221000

000122221000

000122221000

000122221000

00000000

00000000

11111111

22222222

22222222

11111111

00000000

00000000

         0,1,0

0,1,0 x -1,0,0 = -1,0,0

         0,0,1

idxptr = &indexbuffer[startIndex];

loop for each primitive

{

    index = *idxptr++;

    // nVidia hardware does not contain these "assert"s.

    assert (index >= MminIndex);

    assert (index < (MinIndex + NumVertices);

    vertex = vertexBuffer[index + BaseVertexIndex];

}

// keyboard is the IDirectInputDevice8 object
DIDEVICEOBJECTDATA data[8];  // You can change this if you want
DWORD numElements;

if( FAILED( keyboard->GetDeviceData( sizeof(DIDEVICEOBJECTDATA), data, &numElements, 0 ) ) )
{
   // Handle lost keyboard
}

for( int i =0 ; i < numElements; i++ )
{
   if( data[i].dwOfs == DIK_A )
   {
      // Test A key      
      if( data[i].dwData & 0x80)
      {
         // A has been pressed
      }
      else
      {
         // A has been released
      }
   }
}

// keyboard is the IDirectInputDevice 8object
char keys[256];  // Array to hold keystates in

if( FAILED( keyboard->GetDeviceState( sizeof( keys ), LPVOID(&keys) ) )
{
    // The keyboard has been lost, try to re-aquire here
    // and perform error handling
}

if( keys[DIK_A] & 0x80)
{
    // The 'A' key is down
}