CrateDemo.cpp
//=============================================================================
// CrateDemo.cpp by Frank Luna (C) 2005 All Rights Reserved.
//
// Demonstrates texturing a box.
//
// Controls: Use mouse to orbit and zoom; use the 'W' and 'S' keys to
// alter the height of the camera.
//=============================================================================
#include "d3dApp.h"
#include "DirectInput.h"
#include <crtdbg.h>
#include "GfxStats.h"
#include <list>
#include "Vertex.h"
class CrateDemo : public D3DApp
{
public:
CrateDemo(HINSTANCE hInstance, std::string winCaption, D3DDEVTYPE devType, DWORD requestedVP);
~CrateDemo();
bool checkDeviceCaps();
void onLostDevice();
void onResetDevice();
void updateScene(float dt);
void drawScene();
// Helper methods
void buildBoxGeometry();
void buildFX();
void buildViewMtx();
void buildProjMtx();
private:
GfxStats* mGfxStats;
IDirect3DVertexBuffer9* mBoxVB;
IDirect3DIndexBuffer9* mBoxIB;
IDirect3DTexture9* mCrateTex;
ID3DXEffect* mFX;
D3DXHANDLE mhTech;
D3DXHANDLE mhWVP;
D3DXHANDLE mhWorldInvTrans;
D3DXHANDLE mhLightVecW;
D3DXHANDLE mhDiffuseMtrl;
D3DXHANDLE mhDiffuseLight;
D3DXHANDLE mhAmbientMtrl;
D3DXHANDLE mhAmbientLight;
D3DXHANDLE mhSpecularMtrl;
D3DXHANDLE mhSpecularLight;
D3DXHANDLE mhSpecularPower;
D3DXHANDLE mhEyePos;
D3DXHANDLE mhWorld;
D3DXHANDLE mhTex;
D3DXVECTOR3 mLightVecW;
D3DXCOLOR mAmbientMtrl;
D3DXCOLOR mAmbientLight;
D3DXCOLOR mDiffuseMtrl;
D3DXCOLOR mDiffuseLight;
D3DXCOLOR mSpecularMtrl;
D3DXCOLOR mSpecularLight;
float mSpecularPower;
float mCameraRotationY;
float mCameraRadius;
float mCameraHeight;
D3DXMATRIX mWorld;
D3DXMATRIX mView;
D3DXMATRIX mProj;
};
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE prevInstance,
PSTR cmdLine, int showCmd)
{
// Enable run-time memory check for debug builds.
#if defined(DEBUG) | defined(_DEBUG)
_CrtSetDbgFlag( _CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF );
#endif
CrateDemo app(hInstance, "Crate Demo", D3DDEVTYPE_HAL, D3DCREATE_HARDWARE_VERTEXPROCESSING);
gd3dApp = &app;
DirectInput di(DISCL_NONEXCLUSIVE|DISCL_FOREGROUND, DISCL_NONEXCLUSIVE|DISCL_FOREGROUND);
gDInput = &di;
return gd3dApp->run();
}
CrateDemo::CrateDemo(HINSTANCE hInstance, std::string winCaption, D3DDEVTYPE devType, DWORD requestedVP)
: D3DApp(hInstance, winCaption, devType, requestedVP)
{
if(!checkDeviceCaps())
{
MessageBox(0, "checkDeviceCaps() Failed", 0, 0);
PostQuitMessage(0);
}
mGfxStats = new GfxStats();
mGfxStats->addVertices(24);
mGfxStats->addTriangles(12);
mCameraRadius = 6.0f;
mCameraRotationY = 1.2 * D3DX_PI;
mCameraHeight = 3.0f;
mLightVecW = D3DXVECTOR3(0.0, 0.0f, -1.0f);
mDiffuseMtrl = D3DXCOLOR(1.0f, 1.0f, 1.0f, 1.0f);
mDiffuseLight = D3DXCOLOR(1.0f, 1.0f, 1.0f, 1.0f);
mAmbientMtrl = D3DXCOLOR(1.0f, 1.0f, 1.0f, 1.0f);
mAmbientLight = D3DXCOLOR(0.6f, 0.6f, 0.6f, 1.0f);
mSpecularMtrl = D3DXCOLOR(0.8f, 0.8f, 0.8f, 1.0f);
mSpecularLight = D3DXCOLOR(1.0f, 1.0f, 1.0f, 1.0f);
mSpecularPower = 8.0f;
D3DXMatrixIdentity(&mWorld);
HR(D3DXCreateTextureFromFile(gd3dDevice, "crate.jpg", &mCrateTex));
buildBoxGeometry();
buildFX();
onResetDevice();
InitAllVertexDeclarations();
}
CrateDemo::~CrateDemo()
{
delete mGfxStats;
ReleaseCOM(mBoxVB);
ReleaseCOM(mBoxIB);
ReleaseCOM(mCrateTex);
ReleaseCOM(mFX);
DestroyAllVertexDeclarations();
}
bool CrateDemo::checkDeviceCaps()
{
D3DCAPS9 caps;
HR(gd3dDevice->GetDeviceCaps(&caps));
// Check for vertex shader version 2.0 support.
if( caps.VertexShaderVersion < D3DVS_VERSION(2, 0) )
return false;
// Check for pixel shader version 2.0 support.
if( caps.PixelShaderVersion < D3DPS_VERSION(2, 0) )
return false;
return true;
}
void CrateDemo::onLostDevice()
{
mGfxStats->onLostDevice();
HR(mFX->OnLostDevice());
}
void CrateDemo::onResetDevice()
{
mGfxStats->onResetDevice();
HR(mFX->OnResetDevice());
// The aspect ratio depends on the backbuffer dimensions, which can
// possibly change after a reset. So rebuild the projection matrix.
buildProjMtx();
}
void CrateDemo::updateScene(float dt)
{
mGfxStats->update(dt);
// Get snapshot of input devices.
gDInput->poll();
// Check input.
if( gDInput->keyDown(DIK_W) )
mCameraHeight += 25.0f * dt;
if( gDInput->keyDown(DIK_S) )
mCameraHeight -= 25.0f * dt;
// Divide by 50 to make mouse less sensitive.
mCameraRotationY += gDInput->mouseDX() / 100.0f;
mCameraRadius += gDInput->mouseDY() / 25.0f;
// If we rotate over 360 degrees, just roll back to 0
if( fabsf(mCameraRotationY) >= 2.0f * D3DX_PI )
mCameraRotationY = 0.0f;
// Don't let radius get too small.
if( mCameraRadius < 5.0f )
mCameraRadius = 5.0f;
// The camera position/orientation relative to world space can
// change every frame based on input, so we need to rebuild the
// view matrix every frame with the latest changes.
buildViewMtx();
}
void CrateDemo::drawScene()
{
// Clear the backbuffer and depth buffer.
HR(gd3dDevice->Clear(0, 0, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER, 0xffeeeeee, 1.0f, 0));
HR(gd3dDevice->BeginScene());
// Setup the rendering FX
HR(mFX->SetTechnique(mhTech));
HR(mFX->SetMatrix(mhWVP, &(mWorld*mView*mProj)));
D3DXMATRIX worldInvTrans;
D3DXMatrixInverse(&worldInvTrans, 0, &mWorld);
D3DXMatrixTranspose(&worldInvTrans, &worldInvTrans);
HR(mFX->SetMatrix(mhWorldInvTrans, &worldInvTrans));
HR(mFX->SetValue(mhLightVecW, &mLightVecW, sizeof(D3DXVECTOR3)));
HR(mFX->SetValue(mhDiffuseMtrl, &mDiffuseMtrl, sizeof(D3DXCOLOR)));
HR(mFX->SetValue(mhDiffuseLight, &mDiffuseLight, sizeof(D3DXCOLOR)));
HR(mFX->SetValue(mhAmbientMtrl, &mAmbientMtrl, sizeof(D3DXCOLOR)));
HR(mFX->SetValue(mhAmbientLight, &mAmbientLight, sizeof(D3DXCOLOR)));
HR(mFX->SetValue(mhSpecularLight, &mSpecularLight, sizeof(D3DXCOLOR)));
HR(mFX->SetValue(mhSpecularMtrl, &mSpecularMtrl, sizeof(D3DXCOLOR)));
HR(mFX->SetFloat(mhSpecularPower, mSpecularPower));
HR(mFX->SetMatrix(mhWorld, &mWorld));
HR(mFX->SetTexture(mhTex, mCrateTex));
HR(gd3dDevice->SetVertexDeclaration(VertexPNT::Decl));
HR(gd3dDevice->SetStreamSource(0, mBoxVB, 0, sizeof(VertexPNT)));
HR(gd3dDevice->SetIndices(mBoxIB));
// Begin passes.
UINT numPasses = 0;
HR(mFX->Begin(&numPasses, 0));
for(UINT i = 0; i < numPasses; ++i)
{
HR(mFX->BeginPass(i));
HR(gd3dDevice->DrawIndexedPrimitive(D3DPT_TRIANGLELIST, 0, 0, 24, 0, 12));
HR(mFX->EndPass());
}
HR(mFX->End());
mGfxStats->display();
HR(gd3dDevice->EndScene());
// Present the backbuffer.
HR(gd3dDevice->Present(0, 0, 0, 0));
}
void CrateDemo::buildBoxGeometry()
{
// Create the vertex buffer.
HR(gd3dDevice->CreateVertexBuffer(24 * sizeof(VertexPNT), D3DUSAGE_WRITEONLY,
0, D3DPOOL_MANAGED, &mBoxVB, 0));
// Write box vertices to the vertex buffer.
VertexPNT* v = 0;
HR(mBoxVB->Lock(0, 0, (void**)&v, 0));
// Fill in the front face vertex data.
v[0] = VertexPNT(-1.0f, -1.0f, -1.0f, 0.0f, 0.0f, -1.0f, 0.0f, 1.0f);
v[1] = VertexPNT(-1.0f, 1.0f, -1.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f);
v[2] = VertexPNT( 1.0f, 1.0f, -1.0f, 0.0f, 0.0f, -1.0f, 1.0f, 0.0f);
v[3] = VertexPNT( 1.0f, -1.0f, -1.0f, 0.0f, 0.0f, -1.0f, 1.0f, 1.0f);
// Fill in the back face vertex data.
v[4] = VertexPNT(-1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, 1.0f);
v[5] = VertexPNT( 1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f);
v[6] = VertexPNT( 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f);
v[7] = VertexPNT(-1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, 0.0f);
// Fill in the top face vertex data.
v[8] = VertexPNT(-1.0f, 1.0f, -1.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f);
v[9] = VertexPNT(-1.0f, 1.0f, 1.0f, 0.0f, 1.0f, 0.0f, 0.0f, 0.0f);
v[10] = VertexPNT( 1.0f, 1.0f, 1.0f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f);
v[11] = VertexPNT( 1.0f, 1.0f, -1.0f, 0.0f, 1.0f, 0.0f, 1.0f, 1.0f);
// Fill in the bottom face vertex data.
v[12] = VertexPNT(-1.0f, -1.0f, -1.0f, 0.0f, -1.0f, 0.0f, 1.0f, 1.0f);
v[13] = VertexPNT( 1.0f, -1.0f, -1.0f, 0.0f, -1.0f, 0.0f, 0.0f, 1.0f);
v[14] = VertexPNT( 1.0f, -1.0f, 1.0f, 0.0f, -1.0f, 0.0f, 0.0f, 0.0f);
v[15] = VertexPNT(-1.0f, -1.0f, 1.0f, 0.0f, -1.0f, 0.0f, 1.0f, 0.0f);
// Fill in the left face vertex data.
v[16] = VertexPNT(-1.0f, -1.0f, 1.0f, -1.0f, 0.0f, 0.0f, 0.0f, 1.0f);
v[17] = VertexPNT(-1.0f, 1.0f, 1.0f, -1.0f, 0.0f, 0.0f, 0.0f, 0.0f);
v[18] = VertexPNT(-1.0f, 1.0f, -1.0f, -1.0f, 0.0f, 0.0f, 1.0f, 0.0f);
v[19] = VertexPNT(-1.0f, -1.0f, -1.0f, -1.0f, 0.0f, 0.0f, 1.0f, 1.0f);
// Fill in the right face vertex data.
v[20] = VertexPNT( 1.0f, -1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 0.0f, 1.0f);
v[21] = VertexPNT( 1.0f, 1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 0.0f, 0.0f);
v[22] = VertexPNT( 1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f);
v[23] = VertexPNT( 1.0f, -1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f);
HR(mBoxVB->Unlock());
// Create the vertex buffer.
HR(gd3dDevice->CreateIndexBuffer(36 * sizeof(WORD), D3DUSAGE_WRITEONLY,
D3DFMT_INDEX16, D3DPOOL_MANAGED, &mBoxIB, 0));
// Write box indices to the index buffer.
WORD* i = 0;
HR(mBoxIB->Lock(0, 0, (void**)&i, 0));
// Fill in the front face index data
i[0] = 0; i[1] = 1; i[2] = 2;
i[3] = 0; i[4] = 2; i[5] = 3;
// Fill in the back face index data
i[6] = 4; i[7] = 5; i[8] = 6;
i[9] = 4; i[10] = 6; i[11] = 7;
// Fill in the top face index data
i[12] = 8; i[13] = 9; i[14] = 10;
i[15] = 8; i[16] = 10; i[17] = 11;
// Fill in the bottom face index data
i[18] = 12; i[19] = 13; i[20] = 14;
i[21] = 12; i[22] = 14; i[23] = 15;
// Fill in the left face index data
i[24] = 16; i[25] = 17; i[26] = 18;
i[27] = 16; i[28] = 18; i[29] = 19;
// Fill in the right face index data
i[30] = 20; i[31] = 21; i[32] = 22;
i[33] = 20; i[34] = 22; i[35] = 23;
HR(mBoxIB->Unlock());
}
void CrateDemo::buildFX()
{
// Create the FX from a .fx file.
ID3DXBuffer* errors = 0;
HR(D3DXCreateEffectFromFile(gd3dDevice, "DirLightTex.fx",
0, 0, D3DXSHADER_DEBUG, 0, &mFX, &errors));
if( errors )
MessageBox(0, (char*)errors->GetBufferPointer(), 0, 0);
// Obtain handles.
mhTech = mFX->GetTechniqueByName("DirLightTexTech");
mhWVP = mFX->GetParameterByName(0, "gWVP");
mhWorldInvTrans = mFX->GetParameterByName(0, "gWorldInvTrans");
mhLightVecW = mFX->GetParameterByName(0, "gLightVecW");
mhDiffuseMtrl = mFX->GetParameterByName(0, "gDiffuseMtrl");
mhDiffuseLight = mFX->GetParameterByName(0, "gDiffuseLight");
mhAmbientMtrl = mFX->GetParameterByName(0, "gAmbientMtrl");
mhAmbientLight = mFX->GetParameterByName(0, "gAmbientLight");
mhSpecularMtrl = mFX->GetParameterByName(0, "gSpecularMtrl");
mhSpecularLight = mFX->GetParameterByName(0, "gSpecularLight");
mhSpecularPower = mFX->GetParameterByName(0, "gSpecularPower");
mhEyePos = mFX->GetParameterByName(0, "gEyePosW");
mhWorld = mFX->GetParameterByName(0, "gWorld");
mhTex = mFX->GetParameterByName(0, "gTex");
}
void CrateDemo::buildViewMtx()
{
float x = mCameraRadius * cosf(mCameraRotationY);
float z = mCameraRadius * sinf(mCameraRotationY);
D3DXVECTOR3 pos(x, mCameraHeight, z);
D3DXVECTOR3 target(0.0f, 0.0f, 0.0f);
D3DXVECTOR3 up(0.0f, 1.0f, 0.0f);
D3DXMatrixLookAtLH(&mView, &pos, &target, &up);
HR(mFX->SetValue(mhEyePos, &pos, sizeof(D3DXVECTOR3)));
}
void CrateDemo::buildProjMtx()
{
float w = (float)md3dPP.BackBufferWidth;
float h = (float)md3dPP.BackBufferHeight;
D3DXMatrixPerspectiveFovLH(&mProj, D3DX_PI * 0.25f, w/h, 1.0f, 5000.0f);
}
dirLightTex.fx
//=============================================================================
// dirLightTex.fx by Frank Luna (C) 2004 All Rights Reserved.
//
// Uses a directional light plus texturing.
//=============================================================================
uniform extern float4x4 gWorld;
uniform extern float4x4 gWorldInvTrans;
uniform extern float4x4 gWVP;
uniform extern float4 gAmbientMtrl;
uniform extern float4 gAmbientLight;
uniform extern float4 gDiffuseMtrl;
uniform extern float4 gDiffuseLight;
uniform extern float4 gSpecularMtrl;
uniform extern float4 gSpecularLight;
uniform extern float gSpecularPower;
uniform extern float3 gLightVecW;
uniform extern float3 gEyePosW;
uniform extern texture gTex;
sampler TexS = sampler_state
{
Texture = <gTex>;
MinFilter = Anisotropic;
MagFilter = LINEAR;
MipFilter = LINEAR;
MaxAnisotropy = 8;
AddressU = WRAP;
AddressV = WRAP;
};
struct OutputVS
{
float4 posH : POSITION0;
float4 diffuse : COLOR0;
float4 spec : COLOR1;
float2 tex0 : TEXCOORD0;
};
OutputVS DirLightTexVS(float3 posL : POSITION0, float3 normalL : NORMAL0, float2 tex0: TEXCOORD0)
{
// Zero out our output.
OutputVS outVS = (OutputVS)0;
// Transform normal to world space.
float3 normalW = mul(float4(normalL, 0.0f), gWorldInvTrans).xyz;
normalW = normalize(normalW);
// Transform vertex position to world space.
float3 posW = mul(float4(posL, 1.0f), gWorld).xyz;
//=======================================================
// Compute the color: Equation 10.3.
// Compute the vector from the vertex to the eye position.
float3 toEye = normalize(gEyePosW - posW);
// Compute the reflection vector.
float3 r = reflect(-gLightVecW, normalW);
// Determine how much (if any) specular light makes it into the eye.
float t = pow(max(dot(r, toEye), 0.0f), gSpecularPower);
// Determine the diffuse light intensity that strikes the vertex.
float s = max(dot(gLightVecW, normalW), 0.0f);
// Compute the ambient, diffuse and specular terms separatly.
float3 spec = t*(gSpecularMtrl*gSpecularLight).rgb;
float3 diffuse = s*(gDiffuseMtrl*gDiffuseLight).rgb;
float3 ambient = gAmbientMtrl*gAmbientLight;
// Sum all the terms together and copy over the diffuse alpha.
outVS.diffuse.rgb = ambient + diffuse;
outVS.diffuse.a = gDiffuseMtrl.a;
outVS.spec = float4(spec, 0.0f);
//=======================================================
// Transform to homogeneous clip space.
outVS.posH = mul(float4(posL, 1.0f), gWVP);
// Pass on texture coordinates to be interpolated in rasterization.
outVS.tex0 = tex0;
// Done--return the output.
return outVS;
}
float4 DirLightTexPS(float4 c : COLOR0, float4 spec : COLOR1, float2 tex0 : TEXCOORD0) : COLOR
{
float3 texColor = tex2D(TexS, tex0).rgb;
float3 diffuse = c.rgb * texColor;
return float4(diffuse + spec.rgb, c.a);
}
technique DirLightTexTech
{
pass P0
{
// Specify the vertex and pixel shader associated with this pass.
vertexShader = compile vs_2_0 DirLightTexVS();
pixelShader = compile ps_2_0 DirLightTexPS();
}
}