Stencil-Mirror-Shadow.rar_Mirror Mirror

////////////////////////////////////////////////////////////////////////////////////////////////// // // File: stencilmirrorshadow.cpp // // Author: Frank Luna (C) All Rights Reserved // // System: AMD Athlon 1800+ XP, 512 DDR, Geforce 3, Windows XP, MSVC++ 7.0 // // Desc: Demonstrates mirrors and shadows with stencils. Use the arrow keys // and the 'A' and 'S' key to navigate the scene and translate the teapot. // ////////////////////////////////////////////////////////////////////////////////////////////////// #include "d3dUtility.h" // // Globals // IDirect3DDevice9* Device = 0; const int Width = 640; const int Height = 480; IDirect3DVertexBuffer9* VB = 0; IDirect3DTexture9* FloorTex = 0; IDirect3DTexture9* WallTex = 0; IDirect3DTexture9* MirrorTex = 0; D3DMATERIAL9 FloorMtrl = d3d::WHITE_MTRL; D3DMATERIAL9 WallMtrl = d3d::WHITE_MTRL; D3DMATERIAL9 MirrorMtrl = d3d::WHITE_MTRL; ID3DXMesh* Teapot = 0; D3DXVECTOR3 TeapotPosition(0.0f, 3.0f, -7.5f); D3DMATERIAL9 TeapotMtrl = d3d::YELLOW_MTRL; void RenderScene(); void RenderMirror(); void RenderShadow(); // // Classes and Structures // struct Vertex { Vertex(){} Vertex(float x, float y, float z, float nx, float ny, float nz, float u, float v) { _x = x; _y = y; _z = z; _nx = nx; _ny = ny; _nz = nz; _u = u; _v = v; } float _x, _y, _z; float _nx, _ny, _nz; float _u, _v; static const DWORD FVF; }; const DWORD Vertex::FVF = D3DFVF_XYZ | D3DFVF_NORMAL | D3DFVF_TEX1; // // Framework Functions // bool Setup() { // // Make walls have low specular reflectance - 20%. // WallMtrl.Specular = d3d::WHITE * 0.2f; // // Create the teapot. // D3DXCreateTeapot(Device, &Teapot, 0); // // Create and specify geometry. For this sample we draw a floor // and a wall with a mirror on it. We put the floor, wall, and // mirror geometry in one vertex buffer. // // |----|----|----| // |Wall|Mirr|Wall| // | | or | | // /--------------/ // / Floor / // /--------------/ // Device->CreateVertexBuffer( 24 * sizeof(Vertex), 0, // usage Vertex::FVF, D3DPOOL_MANAGED, &VB, 0); Vertex* v = 0; VB->Lock(0, 0, (void**)&v, 0); // floor v[0] = Vertex(-7.5f, 0.0f, -10.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f); v[1] = Vertex(-7.5f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 0.0f); v[2] = Vertex( 7.5f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f); v[3] = Vertex(-7.5f, 0.0f, -10.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f); v[4] = Vertex( 7.5f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f); v[5] = Vertex( 7.5f, 0.0f, -10.0f, 0.0f, 1.0f, 0.0f, 1.0f, 1.0f); // wall v[6] = Vertex(-7.5f, 0.0f, 0.0f, 0.0f, 0.0f, -1.0f, 0.0f, 1.0f); v[7] = Vertex(-7.5f, 5.0f, 0.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f); v[8] = Vertex(-2.5f, 5.0f, 0.0f, 0.0f, 0.0f, -1.0f, 1.0f, 0.0f); v[9] = Vertex(-7.5f, 0.0f, 0.0f, 0.0f, 0.0f, -1.0f, 0.0f, 1.0f); v[10] = Vertex(-2.5f, 5.0f, 0.0f, 0.0f, 0.0f, -1.0f, 1.0f, 0.0f); v[11] = Vertex(-2.5f, 0.0f, 0.0f, 0.0f, 0.0f, -1.0f, 1.0f, 1.0f); // Note: We leave gap in middle of walls for mirror v[12] = Vertex(2.5f, 0.0f, 0.0f, 0.0f, 0.0f, -1.0f, 0.0f, 1.0f); v[13] = Vertex(2.5f, 5.0f, 0.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f); v[14] = Vertex(7.5f, 5.0f, 0.0f, 0.0f, 0.0f, -1.0f, 1.0f, 0.0f); v[15] = Vertex(2.5f, 0.0f, 0.0f, 0.0f, 0.0f, -1.0f, 0.0f, 1.0f); v[16] = Vertex(7.5f, 5.0f, 0.0f, 0.0f, 0.0f, -1.0f, 1.0f, 0.0f); v[17] = Vertex(7.5f, 0.0f, 0.0f, 0.0f, 0.0f, -1.0f, 1.0f, 1.0f); // mirror v[18] = Vertex(-2.5f, 0.0f, 0.0f, 0.0f, 0.0f, -1.0f, 0.0f, 1.0f); v[19] = Vertex(-2.5f, 5.0f, 0.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f); v[20] = Vertex( 2.5f, 5.0f, 0.0f, 0.0f, 0.0f, -1.0f, 1.0f, 0.0f); v[21] = Vertex(-2.5f, 0.0f, 0.0f, 0.0f, 0.0f, -1.0f, 0.0f, 1.0f); v[22] = Vertex( 2.5f, 5.0f, 0.0f, 0.0f, 0.0f, -1.0f, 1.0f, 0.0f); v[23] = Vertex( 2.5f, 0.0f, 0.0f, 0.0f, 0.0f, -1.0f, 1.0f, 1.0f); VB->Unlock(); // // Load Textures, set filters. // D3DXCreateTextureFromFile(Device, "checker.jpg", &FloorTex); D3DXCreateTextureFromFile(Device, "brick0.jpg", &WallTex); D3DXCreateTextureFromFile(Device, "ice.bmp", &MirrorTex); Device->SetSamplerState(0, D3DSAMP_MAGFILTER, D3DTEXF_LINEAR); Device->SetSamplerState(0, D3DSAMP_MINFILTER, D3DTEXF_LINEAR); Device->SetSamplerState(0, D3DSAMP_MIPFILTER, D3DTEXF_POINT); // // Lights. // D3DXVECTOR3 lightDir(0.707f, -0.707f, 0.707f); D3DXCOLOR color(1.0f, 1.0f, 1.0f, 1.0f); D3DLIGHT9 light = d3d::InitDirectionalLight(&lightDir, &color); Device->SetLight(0, &light); Device->LightEnable(0, true); Device->SetRenderState(D3DRS_NORMALIZENORMALS, true); Device->SetRenderState(D3DRS_SPECULARENABLE, true); // // Set Camera. // D3DXVECTOR3 pos(-10.0f, 3.0f, -15.0f); D3DXVECTOR3 target(0.0, 0.0f, 0.0f); D3DXVECTOR3 up(0.0f, 1.0f, 0.0f); D3DXMATRIX V; D3DXMatrixLookAtLH(&V, &pos, &target, &up); Device->SetTransform(D3DTS_VIEW, &V); // // Set projection matrix. // D3DXMATRIX proj; D3DXMatrixPerspectiveFovLH( &proj, D3DX_PI / 4.0f, // 45 - degree (float)Width / (float)Height, 1.0f, 1000.0f); Device->SetTransform(D3DTS_PROJECTION, &proj); return true; } void Cleanup() { d3d::Release<IDirect3DVertexBuffer9*>(VB); d3d::Release<IDirect3DTexture9*>(FloorTex); d3d::Release<IDirect3DTexture9*>(WallTex); d3d::Release<IDirect3DTexture9*>(MirrorTex); d3d::Release<ID3DXMesh*>(Teapot); } bool Display(float timeDelta) { if( Device ) { // // Update the scene: // static float radius = 20.0f; if( ::GetAsyncKeyState(VK_LEFT) & 0x8000f ) TeapotPosition.x -= 3.0f * timeDelta; if( ::GetAsyncKeyState(VK_RIGHT) & 0x8000f ) TeapotPosition.x += 3.0f * timeDelta; if( ::GetAsyncKeyState(VK_UP) & 0x8000f ) radius -= 2.0f * timeDelta; if( ::GetAsyncKeyState(VK_DOWN) & 0x8000f ) radius += 2.0f * timeDelta; static float angle = (3.0f * D3DX_PI) / 2.0f; if( ::GetAsyncKeyState('A') & 0x8000f ) angle -= 0.5f * timeDelta; if( ::GetAsyncKeyState('S') & 0x8000f ) angle += 0.5f * timeDelta; D3DXVECTOR3 position( cosf(angle) * radius, 3.0f, sinf(angle) * radius ); D3DXVECTOR3 target(0.0f, 0.0f, 0.0f); D3DXVECTOR3 up(0.0f, 1.0f, 0.0f); D3DXMATRIX V; D3DXMatrixLookAtLH(&V, &position, &target, &up); Device->SetTransform(D3DTS_VIEW, &V); // // Draw the scene: // Device->Clear(0, 0, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER | D3DCLEAR_STENCIL, 0xff000000, 1.0f, 0L); Device->BeginScene(); RenderScene(); // draw shadow before mirror because the depth buffer hasn't been cleared // yet and we need the depth buffer so that the shadow is blended correctly. // That is, if an object obscures the shadow, we don't want to write the shadow // pixel. Alternatively, we could redraw the scene to rewrite the depth buffer. // (RenderMirror clears the depth buffer). RenderShadow(); RenderMirror(); Device->EndScene(); Device->Present(0, 0, 0, 0); } return true; } void RenderScene() { // draw teapot Device->SetMaterial(&TeapotMtrl); Device->SetTexture(0, 0); D3DXMATRIX W; D3DXMatrixTranslation(&W, TeapotPosition.x, TeapotPosition.y, TeapotPosition.z); Device->SetTransform(D3DTS_WORLD, &W); Teapot->DrawSubset(0); D3DXMATRIX I; D3DXMatrixIdentity(&I); Device->SetTransform(D3DTS_WORLD, &I); Device->SetStreamSource(0, VB, 0, sizeof(Vertex)); Device->SetFVF(Vertex::FVF); // draw the floor Device->SetMaterial(&FloorMtrl); Device->SetTexture(0, FloorTex); Device->DrawPrimitive(D3DPT_TRIANGLELIST, 0, 2); // draw the walls Device->SetMaterial(&WallMtrl); Device->SetTexture(0, WallTex); Device->DrawPrimitive(D3DPT_TRIANGLELIST, 6, 4); // draw