//----------------------------------------------------------------------------
Float4 Skinning::ComputeWeights (int a)
{
Float4 tcoord(0.0f, 0.0f, 0.0f, 0.0f);
if (a == 0)
{
tcoord[0] = 1.0f;
tcoord[1] = 0.0f;
tcoord[2] = 0.0f;
tcoord[3] = 0.0f;
}
else if (a == 1)
{
tcoord[0] = 0.5f;
tcoord[1] = 0.5f;
tcoord[2] = 0.0f;
tcoord[3] = 0.0f;
}
else if (a == 2)
{
tcoord[0] = 0.0f;
tcoord[1] = 1.0f;
tcoord[2] = 0.0f;
tcoord[3] = 0.0f;
}
else if (a == 3)
{
tcoord[0] = 0.0f;
tcoord[1] = 0.5f;
tcoord[2] = 0.5f;
tcoord[3] = 0.0f;
}
else if (a == 4)
{
tcoord[0] = 0.0f;
tcoord[1] = 0.0f;
tcoord[2] = 1.0f;
tcoord[3] = 0.0f;
}
else if (a == 5)
{
tcoord[0] = 0.0f;
tcoord[1] = 0.0f;
tcoord[2] = 0.5f;
tcoord[3] = 0.5f;
}
else
{
tcoord[0] = 0.0f;
tcoord[1] = 0.0f;
tcoord[2] = 0.0f;
tcoord[3] = 1.0f;
}
return tcoord;
}
//----------------------------------------------------------------------------
void RenderToTexture::CreateScene ()
{
// Create the root of the scene.
mScene = new0 Node();
mTrnNode = new0 Node();
mScene->AttachChild(mTrnNode);
mWireState = new0 WireState();
mRenderer->SetOverrideWireState(mWireState);
// Create a screen-space camera to use with the render target.
mScreenCamera = ScreenTarget::CreateCamera();
// Create a screen polygon to use with the render target.
VertexFormat* vformat = VertexFormat::Create(2,
VertexFormat::AU_POSITION, VertexFormat::AT_FLOAT3, 0,
VertexFormat::AU_TEXCOORD, VertexFormat::AT_FLOAT2, 0);
const int rtWidth = 256, rtHeight = 256;
mScreenPolygon = ScreenTarget::CreateRectangle(vformat, rtWidth, rtHeight,
0.0f, 0.2f, 0.0f, 0.2f, 0.0f);
// Create the render target.
//Texture::Format tformat = Texture::TF_A8B8G8R8; // DX9 fails
Texture::Format tformat = Texture::TF_A8R8G8B8;
//Texture::Format tformat = Texture::TF_A16B16G16R16;
//Texture::Format tformat = Texture::TF_A16B16G16R16F;
//Texture::Format tformat = Texture::TF_A32B32G32R32F;
mRenderTarget = new0 RenderTarget(1, tformat, rtWidth, rtHeight, false,
false);
// Attach the render target texture to the screen polygon mesh.
mScreenPolygon->SetEffectInstance(Texture2DEffect::CreateUniqueInstance(
mRenderTarget->GetColorTexture(0), Shader::SF_LINEAR,
Shader::SC_CLAMP_EDGE, Shader::SC_CLAMP_EDGE));
// Load the face model and use multitexturing.
#ifdef WM5_LITTLE_ENDIAN
std::string path = Environment::GetPathR("FacePN.wmof");
#else
std::string path = Environment::GetPathR("FacePN.be.wmof");
#endif
InStream inStream;
inStream.Load(path);
TriMeshPtr mesh = DynamicCast<TriMesh>(inStream.GetObjectAt(0));
// Create texture coordinates for the face. Based on knowledge of the
// mesh, the (x,z) values of the model-space vertices may be mapped to
// (s,t) in [0,1]^2.
VertexBufferAccessor vba0(mesh);
const int numVertices = vba0.GetNumVertices();
float xmin = Mathf::MAX_REAL, xmax = -Mathf::MAX_REAL;
float zmin = Mathf::MAX_REAL, zmax = -Mathf::MAX_REAL;
int i;
for (i = 1; i < numVertices; ++i)
{
Float3 position = vba0.Position<Float3>(i);
float x = position[0];
if (x < xmin)
{
xmin = x;
}
if (x > xmax)
{
xmax = x;
}
float z = position[2];
if (z < zmin)
{
zmin = z;
}
if (z > zmax)
{
zmax = z;
}
}
float invXRange = 1.0f/(xmax - xmin);
float invZRange = 1.0f/(zmax - zmin);
// Strip out the normal vectors, because there is no lighting in this
// sample. Add in two texture coordinate channels for a multiplicative
// texture effect.
vformat = VertexFormat::Create(3,
VertexFormat::AU_POSITION, VertexFormat::AT_FLOAT3, 0,
VertexFormat::AU_TEXCOORD, VertexFormat::AT_FLOAT2, 0,
VertexFormat::AU_TEXCOORD, VertexFormat::AT_FLOAT2, 1);
int vstride = vformat->GetStride();
VertexBuffer* vbuffer = new0 VertexBuffer(numVertices, vstride);
VertexBufferAccessor vba1(vformat, vbuffer);
for (i = 0; i < numVertices; ++i)
{
Float3 position = vba0.Position<Float3>(i);
Float2 tcoord(
(position[0] - xmin)*invXRange,
(position[2] - zmin)*invZRange);
vba1.Position<Float3>(i) = position;
vba1.TCoord<Float2>(0, i) = tcoord;
vba1.TCoord<Float2>(1, i) = tcoord;
}
mesh->SetVertexFormat(vformat);
mesh->SetVertexBuffer(vbuffer);
path = Environment::GetPathR("Leaf.wmtf");
Texture2D* texture0 = Texture2D::LoadWMTF(path);
path = Environment::GetPathR("Water.wmtf");
Texture2D* texture1 = Texture2D::LoadWMTF(path);
VisualEffectInstance* instance = Texture2AddEffect::CreateUniqueInstance(
texture0, Shader::SF_LINEAR, Shader::SC_CLAMP_EDGE,
Shader::SC_CLAMP_EDGE, texture1, Shader::SF_LINEAR,
Shader::SC_CLAMP_EDGE, Shader::SC_CLAMP_EDGE);
mesh->SetEffectInstance(instance);
mTrnNode->AttachChild(mesh);
}