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/***************************************************************************/
/*
*/
/* File: game.cpp
*/
/*
*/
/***************************************************************************/
#include
<d3dx8.h>
#include
<d3d8.h>
// Each point in 3D space will be represented by this structure which we are
// defining here! So it will have an x,y,z point, a colour, and a texture
// placement... we could really leave out the colour part... but I'm lazy!
struct
CUSTOMVERTEX
{
FLOAT
x, y, z;
DWORD colour;
FLOAT tu, tv;
};
CUSTOMVERTEX cvVertices[] ={
// x y z colour tu
tv
{
-1.0f, -1.0f, -1.0f, D3DCOLOR_XRGB(255,0,0), 0.0f, 1.0f },
//Front face
{
-1.0f, 1.0f, -1.0f, D3DCOLOR_XRGB(255,0,0), 0.0f, 0.0f },
{
1.0f, 1.0f, -1.0f, D3DCOLOR_XRGB(255,0,0), 1.0f, 0.0f },
{
1.0f, 1.0f, -1.0f, D3DCOLOR_XRGB(255,0,0), 1.0f, 0.0f },
{
1.0f, -1.0f, -1.0f, D3DCOLOR_XRGB(255,0,0), 1.0f, 1.0f },
{
-1.0f, -1.0f, -1.0f, D3DCOLOR_XRGB(255,0,0), 0.0f, 1.0f }
};
// Display code
void
Render()
{
if(!g_pD3DDevice)return;
IDirect3DVertexBuffer8* g_pVertexBuffer = NULL; //
Buffer to hold vertices
IDirect3DTexture8* pTexture = NULL; //texture
// This is where we define what is in our vertice
points...as I said earlier
// there made up of [1].xyz position, [2].colour
and [3].texture placement.
UINT D3DFVF_CUSTOMVERTEX (D3DFVF_XYZ|D3DFVF_DIFFUSE|D3DFVF_TEX1);//added
textures to the vertexes
// Clear the back buffer to a blue color
g_pD3DDevice->Clear( 0, NULL, D3DCLEAR_TARGET|D3DCLEAR_ZBUFFER,
D3DCOLOR_XRGB(0,0,255), 1.0f, 0 );
// Begin the scene.
g_pD3DDevice->BeginScene();
//camera
D3DXMATRIX view_matrix, matProj;
D3DXMatrixLookAtLH(&view_matrix,&D3DXVECTOR3( 0.0f, 0.0f,-8.0f ),
&D3DXVECTOR3( 0.0f, 0.0f, 0.0f ),
&D3DXVECTOR3( 0.0f, 1.0f, 0.0f ));
g_pD3DDevice->SetTransform(D3DTS_VIEW,&view_matrix);
D3DXMatrixPerspectiveFovLH(&matProj, //Result
Matrix
D3DX_PI/4,//Field of
View, in radians. (PI/4) is typical
((float)600 /
(float)400),
//Aspect ratio
1.0f, //Near
view plane
100.0f ); // Far
view plane
g_pD3DDevice->SetTransform( D3DTS_PROJECTION, &matProj );
//end camera
g_pD3DDevice->CreateVertexBuffer(sizeof(cvVertices),
D3DUSAGE_WRITEONLY, D3DFVF_CUSTOMVERTEX,D3DPOOL_DEFAULT, &g_pVertexBuffer);
VOID* pVertices;
g_pVertexBuffer->Lock(0, sizeof(cvVertices),
(BYTE**)&pVertices, 0);
memcpy(pVertices, cvVertices, sizeof(cvVertices));
g_pVertexBuffer->Unlock();
// Here is the API that loads in our image.
D3DXCreateTextureFromFile(g_pD3DDevice, "image.bmp", &pTexture);
g_pD3DDevice->SetVertexShader(D3DFVF_CUSTOMVERTEX);
g_pD3DDevice->SetStreamSource(0, g_pVertexBuffer,
sizeof(CUSTOMVERTEX));
g_pD3DDevice->SetTexture(0,pTexture);
g_pD3DDevice->DrawPrimitive(D3DPT_TRIANGLELIST, 0, 2);
// End the scene.
g_pD3DDevice->EndScene();
// After rendering the scene we display it.
g_pD3DDevice->Present( NULL, NULL, NULL, NULL );
pTexture->Release();
g_pVertexBuffer->Release();
}
// The mainloop() function here is just called repeately from the main.cpp
file...e.g.
// its a loop so that when no messages are being processed by windows.. we
come here
// you could have just put a while loop... but how would you exit the
program! Must play
// nice with the other programs on your computer as well!.
void
mainloop()
{
Render();
} |
