cant render a rectange in rhw space

Anddos · 2012-02-29T19:05:03

struct CUSTOMVERTEX {FLOAT X, Y, Z, RHW; DWORD COLOR;}; #define CUSTOMFVF (D3DFVF_XYZRHW | D3DFVF_DIFFUSE ) I an trying to render a rectangle like this, it renders in linelist mode so i can see if the cordinates are correct, so what i want todo now is change it to 2 tranges to make a solid rectangle, but i can only seem to make 1 trangle render , not sure why? CUSTOMVERTEX vertices[] = { //x //y /*450 */{ 150.0f, 62.5f, 0.5f, 1.0f, D3DCOLOR_XRGB(0, 0, 255), }, //top left { 325.0f, 500.0f, 0.5f, 1.0f, D3DCOLOR_XRGB(0, 255, 0), }, //bottom right { 150.0f, 500.0f, 0.5f, 1.0f, D3DCOLOR_XRGB(255, 0, 0), }, //bottom left {150.0f, 62.5f, 0.5f, 1.0f, D3DCOLOR_XRGB(0, 0, 255), }, //top left { 325.0f, 62.5f, 0.5f, 1.0f, D3DCOLOR_XRGB(0, 0, 255), }, //top right { 325.0f, 500.0f, 0.5f, 1.0f, D3DCOLOR_XRGB(0, 0, 255), }, //bottom right }; // create a vertex buffer interface called v_buffer d3ddev->CreateVertexBuffer(6*sizeof(CUSTOMVERTEX), 0, CUSTOMFVF, D3DPOOL_MANAGED, &v_buffer, NULL); VOID* pVoid; // a void pointer // lock v_buffer and load the vertices into it v_buffer->Lock(0, 0, (void**)&pVoid, 0); memcpy(pVoid, vertices, sizeof(vertices)); v_buffer->Unlock(); in the rendering function // select which vertex format we are using d3ddev->SetFVF(CUSTOMFVF); // select the vertex buffer to display d3ddev->SetStreamSource(0, v_buffer, 0, sizeof(CUSTOMVERTEX)); // copy the vertex buffer to the back buffer // d3ddev->DrawPrimitive(D3DPT_TRIANGLESTRIP, 0,2); d3ddev->DrawPrimitive(D3DPT_LINESTRIP, 0,5);