bool CObjectCubeMapManager::Init()
{
CREATETEXTUREPARAMS createtex;
TCHAR name[1024];
CHashString tempName;
int i;
DWORD retVal;
// create 6 2D textures for loading cube map faces
for (i = 0; i < CUBEMAP_TOTAL_DIR; ++i)
{
// generate unique name
sprintf(name, _T("%s_%03d"), m_Texture2DName->GetString(), i);
tempName.Init(name);
// create message
createtex.Name = &tempName;
createtex.sizeX = m_iTextureSize;
createtex.sizeY = m_iTextureSize;
createtex.bitDepth = 32;
// create the texture
static DWORD msgHash_CreateTexture = CHashString(_T("CreateTexture")).GetUniqueID();
m_ToolBox->SendMessage(msgHash_CreateTexture, sizeof(createtex), &createtex );
if( createtex.TextureObjectInterface )
{
// grab the interface
m_Texture2D[i] = dynamic_cast< ITextureObject* >( createtex.TextureObjectInterface );
}
}
// get the shader
if( !m_CubeMapShader )
{
CREATEEFFECTINTERFACE effectMsg;
CHashString CubeMapEffect(_T("shaders\\objectcubemap.efx"));
effectMsg.m_Name = &CubeMapEffect;
effectMsg.m_EffectInterface = NULL;
static DWORD msgHash_GetEffectInterface = CHashString(_T("GetEffectInterface")).GetUniqueID();
retVal = m_ToolBox->SendMessage(msgHash_GetEffectInterface, sizeof(CREATEEFFECTINTERFACE), &effectMsg);
// I really wish the programmers would use defensive programming.
if (retVal != MSG_HANDLED)
{
return false;
}
if (effectMsg.m_EffectInterface != NULL)
{
m_CubeMapShader = effectMsg.m_EffectInterface;
m_CubeMapShader->SetTextureStageFlags( 0, 0, SAMPLERSTATE_U, TEXTURESTAGE_TADDRESS_WRAP );
m_CubeMapShader->SetTextureStageFlags( 0, 0, SAMPLERSTATE_V, TEXTURESTAGE_TADDRESS_WRAP );
}
}
return true;
}
//----------------------------------------------------------------------------
void CubeMaps::CreateScene ()
{
// Create the root of the scene.
mScene = new0 Node();
mWireState = new0 WireState();
mRenderer->SetOverrideWireState(mWireState);
// Create the walls of the cube room. Each of the six texture images is
// RGBA 64-by-64.
Node* room = new0 Node();
mScene->AttachChild(room);
// Index buffer shared by the room walls.
IndexBuffer* ibuffer = new0 IndexBuffer(6, sizeof(int));
int* indices = (int*)ibuffer->GetData();
indices[0] = 0; indices[1] = 1; indices[2] = 3;
indices[3] = 0; indices[4] = 3; indices[5] = 2;
// The vertex format shared by the room walls.
VertexFormat* vformat = VertexFormat::Create(2,
VertexFormat::AU_POSITION, VertexFormat::AT_FLOAT3, 0,
VertexFormat::AU_TEXCOORD, VertexFormat::AT_FLOAT2, 0);
int vstride = vformat->GetStride();
VertexBufferAccessor vba;
// The texture effect shared by the room walls.
Texture2DEffect* effect = new0 Texture2DEffect(Shader::SF_LINEAR);
VertexBuffer* vbuffer;
TriMesh* wall;
std::string textureName;
// +x wall
vbuffer = new0 VertexBuffer(4, vstride);
vba.ApplyTo(vformat, vbuffer);
vba.Position<Float3>(0) = Float3(+1.0f, -1.0f, -1.0f);
vba.Position<Float3>(1) = Float3(+1.0f, -1.0f, +1.0f);
vba.Position<Float3>(2) = Float3(+1.0f, +1.0f, -1.0f);
vba.Position<Float3>(3) = Float3(+1.0f, +1.0f, +1.0f);
vba.TCoord<Float2>(0, 0) = Float2(0.0f, 0.0f);
vba.TCoord<Float2>(0, 1) = Float2(1.0f, 0.0f);
vba.TCoord<Float2>(0, 2) = Float2(0.0f, 1.0f);
vba.TCoord<Float2>(0, 3) = Float2(1.0f, 1.0f);
wall = new0 TriMesh(vformat, vbuffer, ibuffer);
room->AttachChild(wall);
textureName = Environment::GetPathR("XpFace.wmtf");
Texture2D* xpTexture = Texture2D::LoadWMTF(textureName);
wall->SetEffectInstance(effect->CreateInstance(xpTexture));
// -x wall
vbuffer = new0 VertexBuffer(4, vstride);
vba.ApplyTo(vformat, vbuffer);
vba.Position<Float3>(0) = Float3(-1.0f, -1.0f, +1.0f);
vba.Position<Float3>(1) = Float3(-1.0f, -1.0f, -1.0f);
vba.Position<Float3>(2) = Float3(-1.0f, +1.0f, +1.0f);
vba.Position<Float3>(3) = Float3(-1.0f, +1.0f, -1.0f);
vba.TCoord<Float2>(0, 0) = Float2(0.0f, 0.0f);
vba.TCoord<Float2>(0, 1) = Float2(1.0f, 0.0f);
vba.TCoord<Float2>(0, 2) = Float2(0.0f, 1.0f);
vba.TCoord<Float2>(0, 3) = Float2(1.0f, 1.0f);
wall = new0 TriMesh(vformat, vbuffer, ibuffer);
room->AttachChild(wall);
textureName = Environment::GetPathR("XmFace.wmtf");
Texture2D* xmTexture = Texture2D::LoadWMTF(textureName);
wall->SetEffectInstance(effect->CreateInstance(xmTexture));
// +y wall
vbuffer = new0 VertexBuffer(4, vstride);
vba.ApplyTo(vformat, vbuffer);
vba.Position<Float3>(0) = Float3(+1.0f, +1.0f, +1.0f);
vba.Position<Float3>(1) = Float3(-1.0f, +1.0f, +1.0f);
vba.Position<Float3>(2) = Float3(+1.0f, +1.0f, -1.0f);
vba.Position<Float3>(3) = Float3(-1.0f, +1.0f, -1.0f);
vba.TCoord<Float2>(0, 0) = Float2(0.0f, 0.0f);
vba.TCoord<Float2>(0, 1) = Float2(1.0f, 0.0f);
vba.TCoord<Float2>(0, 2) = Float2(0.0f, 1.0f);
vba.TCoord<Float2>(0, 3) = Float2(1.0f, 1.0f);
wall = new0 TriMesh(vformat, vbuffer, ibuffer);
room->AttachChild(wall);
textureName = Environment::GetPathR("YpFace.wmtf");
Texture2D* ypTexture = Texture2D::LoadWMTF(textureName);
wall->SetEffectInstance(effect->CreateInstance(ypTexture));
// -y wall
vbuffer = new0 VertexBuffer(4, vstride);
vba.ApplyTo(vformat, vbuffer);
vba.Position<Float3>(0) = Float3(+1.0f, -1.0f, -1.0f);
vba.Position<Float3>(1) = Float3(-1.0f, -1.0f, -1.0f);
vba.Position<Float3>(2) = Float3(+1.0f, -1.0f, +1.0f);
vba.Position<Float3>(3) = Float3(-1.0f, -1.0f, +1.0f);
vba.TCoord<Float2>(0, 0) = Float2(0.0f, 0.0f);
vba.TCoord<Float2>(0, 1) = Float2(1.0f, 0.0f);
vba.TCoord<Float2>(0, 2) = Float2(0.0f, 1.0f);
vba.TCoord<Float2>(0, 3) = Float2(1.0f, 1.0f);
wall = new0 TriMesh(vformat, vbuffer, ibuffer);
room->AttachChild(wall);
textureName = Environment::GetPathR("YmFace.wmtf");
Texture2D* ymTexture = Texture2D::LoadWMTF(textureName);
wall->SetEffectInstance(effect->CreateInstance(ymTexture));
// +z wall
vbuffer = new0 VertexBuffer(4, vstride);
vba.ApplyTo(vformat, vbuffer);
vba.Position<Float3>(0) = Float3(+1.0f, -1.0f, +1.0f);
vba.Position<Float3>(1) = Float3(-1.0f, -1.0f, +1.0f);
vba.Position<Float3>(2) = Float3(+1.0f, +1.0f, +1.0f);
vba.Position<Float3>(3) = Float3(-1.0f, +1.0f, +1.0f);
vba.TCoord<Float2>(0, 0) = Float2(0.0f, 0.0f);
vba.TCoord<Float2>(0, 1) = Float2(1.0f, 0.0f);
vba.TCoord<Float2>(0, 2) = Float2(0.0f, 1.0f);
vba.TCoord<Float2>(0, 3) = Float2(1.0f, 1.0f);
wall = new0 TriMesh(vformat, vbuffer, ibuffer);
room->AttachChild(wall);
textureName = Environment::GetPathR("ZpFace.wmtf");
Texture2D* zpTexture = Texture2D::LoadWMTF(textureName);
wall->SetEffectInstance(effect->CreateInstance(zpTexture));
// -z wall
vbuffer = new0 VertexBuffer(4, vstride);
vba.ApplyTo(vformat, vbuffer);
vba.Position<Float3>(0) = Float3(-1.0f, -1.0f, -1.0f);
vba.Position<Float3>(1) = Float3(+1.0f, -1.0f, -1.0f);
vba.Position<Float3>(2) = Float3(-1.0f, +1.0f, -1.0f);
vba.Position<Float3>(3) = Float3(+1.0f, +1.0f, -1.0f);
vba.TCoord<Float2>(0, 0) = Float2(0.0f, 0.0f);
vba.TCoord<Float2>(0, 1) = Float2(1.0f, 0.0f);
vba.TCoord<Float2>(0, 2) = Float2(0.0f, 1.0f);
vba.TCoord<Float2>(0, 3) = Float2(1.0f, 1.0f);
wall = new0 TriMesh(vformat, vbuffer, ibuffer);
room->AttachChild(wall);
textureName = Environment::GetPathR("ZmFace.wmtf");
Texture2D* zmTexture = Texture2D::LoadWMTF(textureName);
wall->SetEffectInstance(effect->CreateInstance(zmTexture));
// A sphere to reflect the environment via a cube map. The colors will
// be used to modulate the cube map texture.
vformat = VertexFormat::Create(3,
VertexFormat::AU_POSITION, VertexFormat::AT_FLOAT3, 0,
VertexFormat::AU_NORMAL, VertexFormat::AT_FLOAT3, 0,
VertexFormat::AU_COLOR, VertexFormat::AT_FLOAT3, 0);
vstride = vformat->GetStride();
mSphere = StandardMesh(vformat).Sphere(64, 64, 0.125f);
room->AttachChild(mSphere);
// Generate random vertex colors for the sphere. The StandardMesh class
// produces a sphere with duplicated vertices along a longitude line.
// This allows texture coordinates to be assigned in a manner that treats
// the sphere as if it were a rectangle mesh. For vertex colors, we want
// the duplicated vertices to have the same color, so a hash table is used
// to look up vertex colors for the duplicates.
vba.ApplyTo(mSphere);
std::map<Float3,Float3> dataMap;
for (int i = 0; i < vba.GetNumVertices(); ++i)
{
Float3& position = vba.Position<Float3>(i);
Float3& color = vba.Color<Float3>(0, i);
std::map<Float3,Float3>::iterator iter = dataMap.find(position);
if (iter != dataMap.end())
{
color = iter->second;
}
else
{
color[0] = 0.0f;
color[1] = Mathf::IntervalRandom(0.5f, 0.75f);
color[2] = Mathf::IntervalRandom(0.75f, 1.0f);
dataMap.insert(std::make_pair(position, color));
}
}
// Create the cube map and attach it to the sphere.
std::string effectFile = Environment::GetPathR("CubeMap.wmfx");
CubeMapEffect* cubeMapEffect = new0 CubeMapEffect(effectFile);
ShaderFloat* reflectivity = new0 ShaderFloat(1);
(*reflectivity)[0] = 0.5f;
std::string cubeName = Environment::GetPathR("CubeMap.wmtf");
TextureCube* cubeTexture = TextureCube::LoadWMTF(cubeName);
cubeTexture->GenerateMipmaps();
mCubeMapInstance = cubeMapEffect->CreateInstance(cubeTexture,
reflectivity, false);
mSphere->SetEffectInstance(mCubeMapInstance);
// Allow culling to be disabled on the sphere so when you move inside
// the sphere, you can see the previously hidden facets and verify that
// the cube image for those facets is correctly oriented.
mSphereCullState = cubeMapEffect->GetCullState(0, 0);
}