Billboarding trees are not visible

Hseptic · 2012-07-26T00:55:54

I'm trying to billboard four trees in the vertex shader, but they are not visible when running the program. Here is some source code: TreeDemo::TreeDemo(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(); mCameraRadius = 6.0f; mCameraRotationY = 1.2 * D3DX_PI; mCameraHeight = 3.0f; mLightVecW = D3DXVECTOR3(0.0, 0.707f, -0.707f); mDiffuseLight = D3DXCOLOR(1.0f, 1.0f, 1.0f, 1.0f); mAmbientLight = D3DXCOLOR(0.6f, 0.6f, 0.6f, 1.0f); mSpecularLight = D3DXCOLOR(1.0f, 1.0f, 1.0f, 1.0f); mGroundMtrl.ambient = D3DXCOLOR(1.0f, 1.0f, 1.0f, 1.0f); mGroundMtrl.diffuse = D3DXCOLOR(1.0f, 1.0f, 1.0f, 1.0f); mGroundMtrl.spec = D3DXCOLOR(0.4f, 0.4f, 0.4f, 1.0f); mGroundMtrl.specPower = 8.0f; mGateMtrl.ambient = D3DXCOLOR(1.0f, 1.0f, 1.0f, 1.0f); mGateMtrl.diffuse = D3DXCOLOR(1.0f, 1.0f, 1.0f, 1.0f); mGateMtrl.spec = D3DXCOLOR(0.0f, 0.0f, 0.0f, 1.0f); mGateMtrl.specPower = 8.0f; mTreeMtrl.ambient = D3DXCOLOR(1.0f, 1.0f, 1.0f, 1.0f); mTreeMtrl.diffuse = D3DXCOLOR(1.0f, 1.0f, 1.0f, 1.0f); mTreeMtrl.spec = D3DXCOLOR(0.0f, 0.0f, 0.0f, 1.0f); mTreeMtrl.specPower = 8.0f; D3DXMatrixIdentity(&mGroundWorld); D3DXMatrixIdentity(&mGateWorld); D3DXMatrixIdentity(&mTreeWorld); HR(D3DXCreateTextureFromFile(gd3dDevice, "tree.dds", &mTreeTex)); HR(D3DXCreateTextureFromFile(gd3dDevice, "ground0.dds", &mGroundTex)); HR(D3DXCreateTextureFromFile(gd3dDevice, "gatea.dds", &mGateTex)); buildGridGeometry(); buildGateGeometry(); buildTreeGeometry(); mGfxStats->addVertices(mNumGridVertices); mGfxStats->addTriangles(mNumGridTriangles); // Add gate quad vertices. mGfxStats->addVertices(4); mGfxStats->addTriangles(2); buildFX(); onResetDevice(); InitAllVertexDeclarations(); } void TreeDemo::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->SetValue(mhLightVecW, &mLightVecW, sizeof(D3DXVECTOR3))); HR(mFX->SetValue(mhDiffuseLight, &mDiffuseLight, sizeof(D3DXCOLOR))); HR(mFX->SetValue(mhAmbientLight, &mAmbientLight, sizeof(D3DXCOLOR))); HR(mFX->SetValue(mhSpecularLight, &mSpecularLight, sizeof(D3DXCOLOR))); drawGround(); drawTrees(); mGfxStats->display(); HR(gd3dDevice->EndScene()); // Present the backbuffer. HR(gd3dDevice->Present(0, 0, 0, 0)); } void TreeDemo::buildGridGeometry() { std::vector<D3DXVECTOR3> verts; std::vector<DWORD> indices; GenTriGrid(100, 100, 1.0f, 1.0f, D3DXVECTOR3(0.0f, 0.0f, 0.0f), verts, indices); // Save vertex count and triangle count for DrawIndexedPrimitive arguments. mNumGridVertices = 100*100; mNumGridTriangles = 99*99*2; // Obtain a pointer to a new vertex buffer. HR(gd3dDevice->CreateVertexBuffer(mNumGridVertices * sizeof(VertexPNT), D3DUSAGE_WRITEONLY, 0, D3DPOOL_MANAGED, &mGridVB, 0)); // Now lock it to obtain a pointer to its internal data, and write the // grid's vertex data. VertexPNT* v = 0; HR(mGridVB->Lock(0, 0, (void**)&v, 0)); float texScale = 0.2f; for(int i = 0; i < 100; ++i) { for(int j = 0; j < 100; ++j) { DWORD index = i * 100 + j; v[index].pos = verts[index]; v[index].normal = D3DXVECTOR3(0.0f, 1.0f, 0.0f); v[index].tex0 = D3DXVECTOR2((float)j, (float)i) * texScale; } } HR(mGridVB->Unlock()); // Obtain a pointer to a new index buffer. HR(gd3dDevice->CreateIndexBuffer(mNumGridTriangles*3*sizeof(WORD), D3DUSAGE_WRITEONLY, D3DFMT_INDEX16, D3DPOOL_MANAGED, &mGridIB, 0)); // Now lock it to obtain a pointer to its internal data, and write the // grid's index data. WORD* k = 0; HR(mGridIB->Lock(0, 0, (void**)&k, 0)); for(DWORD i = 0; i < mNumGridTriangles*3; ++i) k = (WORD)indices; HR(mGridIB->Unlock()); } void TreeDemo::buildTreeGeometry() { HR(gd3dDevice->CreateVertexBuffer(16* sizeof(VertexPNT), D3DUSAGE_WRITEONLY, 0, D3DPOOL_MANAGED, &mTreeVB, 0)); VertexPNT* v = 0; HR(mTreeVB->Lock(0, 0, (void**)&v, 0)); v[0] = VertexPNT(-0.5f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f); v[1] = VertexPNT(-0.5f, 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f); v[2] = VertexPNT( 0.5f, 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f); v[3] = VertexPNT( 0.5f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, 1.0f); v[4] = VertexPNT(-0.5f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f, 1.0f); v[5] = VertexPNT(-0.5f, 1.0f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f, 0.0f); v[6] = VertexPNT( 0.5f, 1.0f, 0.0f, 1.0f, 0.0f, 1.0f, 1.0f, 0.0f); v[7] = VertexPNT( 0.5f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f, 1.0f, 1.0f); v[8] = VertexPNT(-0.5f, 0.0f, 0.0f, 2.0f, 0.0f, 2.0f, 0.0f, 1.0f); v[9] = VertexPNT(-0.5f, 1.0f, 0.0f, 2.0f, 0.0f, 2.0f, 0.0f, 0.0f); v[10] = VertexPNT( 0.5f, 1.0f, 0.0f, 2.0f, 0.0f, 2.0f, 1.0f, 0.0f); v[11] = VertexPNT( 0.5f, 0.0f, 0.0f, 2.0f, 0.0f, 2.0f, 1.0f, 1.0f); v[12] = VertexPNT(-0.5f, 0.0f, 0.0f, -2.0f, 0.0f, -2.0f, 0.0f, 1.0f); v[13] = VertexPNT(-0.5f, 1.0f, 0.0f, -2.0f, 0.0f, -2.0f, 0.0f, 0.0f); v[14] = VertexPNT( 0.5f, 1.0f, 0.0f, -2.0f, 0.0f, -2.0f, 1.0f, 0.0f); v[15] = VertexPNT( 0.5f, 0.0f, 0.0f, -2.0f, 0.0f, -2.0f, 1.0f, 1.0f); HR(mTreeVB->Unlock()); HR(gd3dDevice->CreateIndexBuffer(24*sizeof(WORD), D3DUSAGE_WRITEONLY, D3DFMT_INDEX16, D3DPOOL_MANAGED, &mTreeIB, 0)); WORD* k = 0; HR(mTreeIB->Lock(0, 0, (void**)&k, 0)); k[0] = 0; k[1] = 1; k[2] = 2; // Triangle 0 k[3] = 0; k[4] = 2; k[5] = 3; // Triangle 1 k[6] = 4; k[7] = 5; k[8] = 6; // Triangle 2 k[9] = 4; k[10] = 5; k[11] = 7; // Triangle 3 k[12] = 8; k[13] = 9; k[14] = 10; // Triangle 4 k[15] = 8; k[16] = 9; k[17] = 11; // Triangle 5 k[18] = 12; k[19] = 13; k[20] = 14; // Triangle 6 k[21] = 12; k[22] = 13; k[23] = 15; // Triangle 7 HR(mTreeIB->Unlock()); } void TreeDemo::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 TreeDemo::drawGround() { HR(mFX->SetValue(mhAmbientMtrl, &mGroundMtrl.ambient, sizeof(D3DXCOLOR))); HR(mFX->SetValue(mhDiffuseMtrl, &mGroundMtrl.diffuse, sizeof(D3DXCOLOR))); HR(mFX->SetValue(mhSpecularMtrl, &mGroundMtrl.spec, sizeof(D3DXCOLOR))); HR(mFX->SetFloat(mhSpecularPower, mGroundMtrl.specPower)); HR(mFX->SetMatrix(mhWVP, &(mGroundWorld*mView*mProj))); D3DXMATRIX worldInvTrans; D3DXMatrixInverse(&worldInvTrans, 0, &mGroundWorld); D3DXMatrixTranspose(&worldInvTrans, &worldInvTrans); HR(mFX->SetMatrix(mhWorldInvTrans, &worldInvTrans)); HR(mFX->SetMatrix(mhWorld, &mGroundWorld)); HR(mFX->SetTexture(mhTex, mGroundTex)); HR(gd3dDevice->SetVertexDeclaration(VertexPNT::Decl)); HR(gd3dDevice->SetStreamSource(0, mGridVB, 0, sizeof(VertexPNT))); HR(gd3dDevice->SetIndices(mGridIB)); // Begin passes. UINT numPasses = 0; HR(mFX->Begin(&numPasses, 0)); HR(mFX->BeginPass(0)); HR(gd3dDevice->DrawIndexedPrimitive(D3DPT_TRIANGLELIST, 0, 0, mNumGridVertices, 0, mNumGridTriangles)); HR(mFX->EndPass()); HR(mFX->End()); } void TreeDemo::drawTrees() { // Enable alpha test. HR(gd3dDevice->SetRenderState(D3DRS_ALPHATESTENABLE, true)); //HR(gd3dDevice->SetRenderState(D3DRS_ALPHAFUNC, D3DCMP_GREATEREQUAL)); //HR(gd3dDevice->SetRenderState(D3DRS_ALPHAREF, 100)); // Turn off backface culling so you can see both sides of the gate. //HR(gd3dDevice->SetRenderState(D3DRS_CULLMODE, D3DCULL_NONE)); //HR(mFX->SetValue(mhAmbientMtrl, &mTreeMtrl.ambient, sizeof(D3DXCOLOR))); //HR(mFX->SetValue(mhDiffuseMtrl, &mTreeMtrl.diffuse, sizeof(D3DXCOLOR))); //HR(mFX->SetValue(mhSpecularMtrl, &mTreeMtrl.spec, sizeof(D3DXCOLOR))); //HR(mFX->SetFloat(mhSpecularPower, mTreeMtrl.specPower)); HR(mFX->SetMatrix(mhWVP, &(mTreeWorld*mView*mProj))); //D3DXMATRIX worldInvTrans; //D3DXMatrixInverse(&worldInvTrans, 0, &mGateWorld); //D3DXMatrixTranspose(&worldInvTrans, &worldInvTrans); //HR(mFX->SetMatrix(mhWorldInvTrans, &worldInvTrans)); //HR(mFX->SetMatrix(mhWorld, &mGateWorld)); HR(mFX->SetTexture(mhTex, mTreeTex)); HR(gd3dDevice->SetVertexDeclaration(VertexPNT::Decl)); HR(gd3dDevice->SetStreamSource(0, mTreeVB, 0, sizeof(VertexPNT))); HR(gd3dDevice->SetIndices(mTreeIB)); // Begin passes. UINT numPasses = 0; HR(mFX->Begin(&numPasses, 0)); HR(mFX->BeginPass(1)); HR(gd3dDevice->DrawIndexedPrimitive(D3DPT_TRIANGLELIST, 0, 0, 16, 0, 8)); HR(mFX->EndPass()); HR(mFX->End()); // Disable alpha test. HR(gd3dDevice->SetRenderState(D3DRS_ALPHATESTENABLE, false)); // Turn culling back on. // HR(gd3dDevice->SetRenderState(D3DRS_CULLMODE, D3DCULL_CCW)); } ...and the shader: 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; } OutputVS AABillBoardVS(float3 posL : POSITION0, float3 bbOffset : TEXCOORD0, float2 tex0: TEXCOORD1) { OutputVS outVS = (OutputVS)0; float3 tempPosW = posL + bbOffset; float3 look = gEyePosW - tempPosW; look.y = 0.0f; look = normalize(look); float3 up = float3(0.0f, 1.0f, 0.0f); float3 right = cross(up, look); float3x3 R; R[0] = right; R[1] = up; R[2] = look; float3 posW = mul(posL, R) + bbOffset; outVS.posH = mul(float4(posW, 1.0f), gWVP); outVS.tex0 = tex0; return outVS; } float4 DirLightTexPS(float4 c : COLOR0, float4 spec : COLOR1, float2 tex0 : TEXCOORD0) : COLOR { float4 texColor = tex2D(TexS, tex0); float3 diffuse = c.rgb * texColor.rgb; return float4(diffuse + spec.rgb, texColor.a*c.a); } float4 AABillBoardPS(float2 tex0 : TEXCOORD0) : COLOR { float4 texColor = tex2D(TexS, tex0); return (texColor.rgb, texColor.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(); } pass P1 { vertexShader = compile vs_2_0 AABillBoardVS(); pixelShader = compile ps_2_0 AABillBoardPS(); } } What am I missing?