//----------------------------------------------------------------------------
bool FxCompiler::CreateEffect (const Program& vProgram,
const Program& pProgram)
{
InputArray vInputs, pInputs;
OutputArray vOutputs, pOutputs;
ConstantArray vConstants, pConstants;
SamplerArray vSamplers, pSamplers;
if (!Process(vProgram, vInputs, vOutputs, vConstants, vSamplers))
{
return false;
}
if (!Process(pProgram, pInputs, pOutputs, pConstants, pSamplers))
{
return false;
}
mVShader = (VertexShader*)CreateShader(true, vProgram, vInputs, vOutputs,
vConstants, vSamplers);
mPShader = (PixelShader*)CreateShader(false, pProgram, pInputs, pOutputs,
pConstants, pSamplers);
VisualPass* pass = new0 VisualPass();
pass->SetVertexShader(mVShader);
pass->SetPixelShader(mPShader);
// TODO. Once Cg FX files are parsed, the global state from each pass
// should be set here. For now, the application is responsible for
// setting the global state after the *.wmfx file is loaded.
pass->SetAlphaState(new0 AlphaState());
pass->SetCullState(new0 CullState());
pass->SetDepthState(new0 DepthState());
pass->SetOffsetState(new0 OffsetState());
pass->SetStencilState(new0 StencilState());
pass->SetWireState(new0 WireState());
// TODO. Once Cg FX files are parsed, we might have multiple techniques
// or multiple passes per technique.
VisualTechnique* technique = new0 VisualTechnique();
technique->InsertPass(pass);
mEffect = new0 VisualEffect();
mEffect->InsertTechnique(technique);
return true;
}
//----------------------------------------------------------------------------
VisualEffectInstance* GeodesicHeightField::CreateEffectInstance ()
{
// Create the vertex shader.
VertexShader* vshader = new0 VertexShader("Wm5.DLight2MatTex",
3, 3, 16, 0, false);
vshader->SetInput(0, "modelPosition", Shader::VT_FLOAT3,
Shader::VS_POSITION);
vshader->SetInput(1, "modelNormal", Shader::VT_FLOAT3,
Shader::VS_NORMAL);
vshader->SetInput(2, "modelTCoord", Shader::VT_FLOAT2,
Shader::VS_TEXCOORD0);
vshader->SetOutput(0, "clipPosition", Shader::VT_FLOAT4,
Shader::VS_POSITION);
vshader->SetOutput(1, "vertexColor", Shader::VT_FLOAT4,
Shader::VS_COLOR0);
vshader->SetOutput(2, "vertexTCoord", Shader::VT_FLOAT2,
Shader::VS_TEXCOORD0);
vshader->SetConstant( 0, "PVWMatrix", 4);
vshader->SetConstant( 1, "CameraModelPosition", 1);
vshader->SetConstant( 2, "MaterialEmissive", 1);
vshader->SetConstant( 3, "MaterialAmbient", 1);
vshader->SetConstant( 4, "MaterialDiffuse", 1);
vshader->SetConstant( 5, "MaterialSpecular", 1);
vshader->SetConstant( 6, "Light0ModelDirection", 1);
vshader->SetConstant( 7, "Light0Ambient", 1);
vshader->SetConstant( 8, "Light0Diffuse", 1);
vshader->SetConstant( 9, "Light0Specular", 1);
vshader->SetConstant(10, "Light0Attenuation", 1);
vshader->SetConstant(11, "Light1ModelDirection", 1);
vshader->SetConstant(12, "Light1Ambient", 1);
vshader->SetConstant(13, "Light1Diffuse", 1);
vshader->SetConstant(14, "Light1Specular", 1);
vshader->SetConstant(15, "Light1Attenuation", 1);
vshader->SetBaseRegisters(msVRegisters);
vshader->SetPrograms(msVPrograms);
// Create the pixel shader.
PixelShader* pshader = new0 PixelShader("Wm5.DLight2MatTex",
2, 1, 0, 1, false);
pshader->SetInput(0, "vertexColor", Shader::VT_FLOAT4,
Shader::VS_COLOR0);
pshader->SetInput(1, "vertexTCoord", Shader::VT_FLOAT2,
Shader::VS_TEXCOORD0);
pshader->SetOutput(0, "pixelColor", Shader::VT_FLOAT4,
Shader::VS_COLOR0);
pshader->SetSampler(0, "BaseSampler", Shader::ST_2D);
pshader->SetFilter(0, Shader::SF_LINEAR /*_LINEAR */);
pshader->SetCoordinate(0, 0, Shader::SC_CLAMP_EDGE);
pshader->SetCoordinate(0, 1, Shader::SC_CLAMP_EDGE);
pshader->SetTextureUnits(msPTextureUnits);
pshader->SetPrograms(msPPrograms);
VisualPass* pass = new0 VisualPass();
pass->SetVertexShader(vshader);
pass->SetPixelShader(pshader);
pass->SetAlphaState(new0 AlphaState());
pass->SetCullState(new0 CullState());
pass->SetDepthState(new0 DepthState());
pass->SetOffsetState(new0 OffsetState());
pass->SetStencilState(new0 StencilState());
pass->SetWireState(new0 WireState());
// Create the effect.
VisualTechnique* technique = new0 VisualTechnique();
technique->InsertPass(pass);
VisualEffect* effect = new0 VisualEffect();
effect->InsertTechnique(technique);
// Create the material for the effect.
Float4 black(0.0f, 0.0f, 0.0f, 1.0f);
Float4 white(1.0f, 1.0f, 1.0f, 1.0f);
Material* material = new0 Material();
material->Emissive = black;
material->Ambient = Float4(0.24725f, 0.2245f, 0.0645f, 1.0f);
material->Diffuse = Float4(0.34615f, 0.3143f, 0.0903f, 1.0f);
material->Specular = Float4(0.797357f, 0.723991f, 0.208006f, 83.2f);
// Create the lights for the effect.
Light* light0 = new0 Light(Light::LT_DIRECTIONAL);
light0->SetDirection(AVector(0.0f, 0.0f, -1.0f));
light0->Ambient = white;
light0->Diffuse = white;
light0->Specular = black;
Light* light1 = new0 Light(Light::LT_DIRECTIONAL);
light1->SetDirection(AVector(0.0f, 0.0f, 1.0f));
light1->Ambient = white;
light1->Diffuse = white;
light1->Specular = black;
// Create a texture for the effect.
mTexture = new0 Texture2D(Texture::TF_A8R8G8B8, 512, 512, 0);
unsigned char* data = (unsigned char*)mTexture->GetData(0);
memset(data, 0xFF, mTexture->GetNumLevelBytes(0));
// Create an instance of the effect.
VisualEffectInstance* instance = new0 VisualEffectInstance(effect, 0);
instance->SetVertexConstant(0, 0,
new0 PVWMatrixConstant());
instance->SetVertexConstant(0, 1,
new0 CameraModelPositionConstant());
instance->SetVertexConstant(0, 2,
new0 MaterialEmissiveConstant(material));
instance->SetVertexConstant(0, 3,
new0 MaterialAmbientConstant(material));
instance->SetVertexConstant(0, 4,
new0 MaterialDiffuseConstant(material));
instance->SetVertexConstant(0, 5,
new0 MaterialSpecularConstant(material));
instance->SetVertexConstant(0, 6,
new0 LightModelDVectorConstant(light0));
instance->SetVertexConstant(0, 7,
new0 LightAmbientConstant(light0));
instance->SetVertexConstant(0, 8,
new0 LightDiffuseConstant(light0));
instance->SetVertexConstant(0, 9,
new0 LightSpecularConstant(light0));
instance->SetVertexConstant(0, 10,
new0 LightAttenuationConstant(light0));
instance->SetVertexConstant(0, 11,
new0 LightModelDVectorConstant(light1));
instance->SetVertexConstant(0, 12,
new0 LightAmbientConstant(light1));
instance->SetVertexConstant(0, 13,
new0 LightDiffuseConstant(light1));
instance->SetVertexConstant(0, 14,
new0 LightSpecularConstant(light1));
instance->SetVertexConstant(0, 15,
new0 LightAttenuationConstant(light1));
instance->SetPixelTexture(0, 0, mTexture);
return instance;
}
//----------------------------------------------------------------------------
void VolumeTextures::CreateScene ()
{
mScene = new0 Node();
mAlphaState = new0 AlphaState();
mAlphaState->BlendEnabled = true;
mRenderer->SetOverrideAlphaState(mAlphaState);
mCullState = new0 CullState();
mCullState->Enabled = false;
mRenderer->SetOverrideCullState(mCullState);
// Create the grid of square meshes.
const int numSlices = 64;
const int numSamples = 32;
// The vertex format that is shared by all square meshes.
VertexFormat* vformat = VertexFormat::Create(2,
VertexFormat::AU_POSITION, VertexFormat::AT_FLOAT3, 0,
VertexFormat::AU_TEXCOORD, VertexFormat::AT_FLOAT3, 0);
int vstride = vformat->GetStride();
// The index buffer that is shared by all square meshes.
int numIndices = 6*(numSamples-1)*(numSamples-1);
IndexBuffer* ibuffer = new0 IndexBuffer(numIndices, sizeof(int));
int* indices = (int*)ibuffer->GetData();
for (int i1 = 0; i1 < numSamples - 1; ++i1)
{
for (int i0 = 0; i0 < numSamples - 1; ++i0)
{
int v0 = i0 + numSamples * i1;
int v1 = v0 + 1;
int v2 = v1 + numSamples;
int v3 = v0 + numSamples;
*indices++ = v0;
*indices++ = v1;
*indices++ = v2;
*indices++ = v0;
*indices++ = v2;
*indices++ = v3;
}
}
// Create the volume texture. Three Gaussian distributions are used for
// the RGB color channels. The alpha channel is constant.
const int bound = 64;
Texture3D* texture = new0 Texture3D(Texture::TF_A8R8G8B8, bound, bound,
bound, 1);
unsigned char* data = (unsigned char*)texture->GetData(0);
const float mult = 1.0f/(bound - 1.0f);
const float rParam = 0.01f;
const float gParam = 0.01f;
const float bParam = 0.01f;
const float extreme = 8.0f;
APoint rCenter( 0.5f*extreme, 0.0f, 0.0f);
APoint gCenter(-0.5f*extreme, -0.5f*extreme, 0.0f);
APoint bCenter(-0.5f*extreme, +0.5f*extreme, 0.0f);
unsigned char commonAlpha = 12;
APoint point;
for (int z = 0; z < bound; ++z)
{
point[2] = -extreme + 2.0f*extreme*mult*z;
for (int y = 0; y < bound; ++y)
{
point[1] = -extreme + 2.0f*extreme*mult*y;
for (int x = 0; x < bound; ++x)
{
point[0] = -extreme + 2.0f*extreme*mult*x;
AVector diff = point - rCenter;
float sqrLength = diff.SquaredLength();
float rGauss = 1.0f - rParam*sqrLength;
if (rGauss < 0.0f)
{
rGauss = 0.0f;
}
diff = point - gCenter;
sqrLength = diff.SquaredLength();
float gGauss = 1.0f - gParam*sqrLength;
if (gGauss < 0.0f)
{
gGauss = 0.0f;
}
diff = point - bCenter;
sqrLength = diff.SquaredLength();
float bGauss = 1.0f - bParam*sqrLength;
if (bGauss < 0.0f)
{
bGauss = 0.0f;
}
*data++ = (unsigned char)(255.0f*bGauss);
*data++ = (unsigned char)(255.0f*gGauss);
*data++ = (unsigned char)(255.0f*rGauss);
*data++ = commonAlpha;
}
}
}
// The volume texture effect that is shared by all square meshes.
std::string effectFile = Environment::GetPathR("VolumeTextures.wmfx");
VolumeTextureEffect* effect = new0 VolumeTextureEffect(effectFile);
VisualEffectInstance* instance = effect->CreateInstance(texture);
// The grid of squares.
const int numVertices = numSamples*numSamples;
float inv = 1.0f/(numSamples - 1.0f);
VertexBufferAccessor vba;
for (int slice = 0; slice < numSlices; ++slice)
{
VertexBuffer* vbuffer = new0 VertexBuffer(numVertices, vstride);
vba.ApplyTo(vformat, vbuffer);
float w = slice/(numSlices - 1.0f);
float z = 2.0f*w - 1.0f;
for (int i1 = 0, i = 0; i1 < numSamples; ++i1)
{
float v = i1*inv;
float y = 2.0f*v - 1.0f;
for (int i0 = 0; i0 < numSamples; ++i0, ++i)
{
float u = i0*inv;
float x = 2.0f*u - 1.0f;
vba.Position<Float3>(i) = Float3(x, y, z);
vba.TCoord<Float3>(0, i) = Float3(u, v, w);
}
}
TriMesh* mesh = new0 TriMesh(vformat, vbuffer, ibuffer);
mesh->SetEffectInstance(instance);
mScene->AttachChild(mesh);
}
}
//----------------------------------------------------------------------------
Node* SimplePendulumFriction::CreatePendulum ()
{
VertexFormat* vformat = VertexFormat::Create(2,
VertexFormat::AU_POSITION, VertexFormat::AT_FLOAT3, 0,
VertexFormat::AU_NORMAL, VertexFormat::AT_FLOAT3, 0);
StandardMesh sm(vformat);
// Pendulum rod.
TriMesh* rod = sm.Cylinder(2, 8, 0.05f, 12.0f, true);
rod->LocalTransform.SetTranslate(APoint(0.0f, 0.0f, 10.0f));
// The pendulum bulb. Start with a sphere (to get the connectivity) and
// then adjust the vertices to form a pair of joined cones.
TriMesh* bulb = sm.Sphere(16, 32, 2.0f);
VertexBufferAccessor vba(bulb);
int numVertices = vba.GetNumVertices();
int i;
for (i = 0; i < numVertices; ++i)
{
Float3& pos = vba.Position<Float3>(i);
float r = Mathf::Sqrt(pos[0]*pos[0] + pos[1]*pos[1]);
float z = pos[2] + 2.0f;
if (z >= 2.0f)
{
z = 4.0f - r;
}
else
{
z = r;
}
pos[2] = z;
}
// Translate the pendulum joint to the origin for the purpose of
// rotation.
for (i = 0; i < numVertices; ++i)
{
vba.Position<Float3>(i)[2] -= 16.0f;
}
bulb->UpdateModelSpace(Visual::GU_NORMALS);
vba.ApplyTo(rod);
numVertices = vba.GetNumVertices();
for (i = 0; i < numVertices; ++i)
{
vba.Position<Float3>(i)[2] -= 16.0f;
}
rod->UpdateModelSpace(Visual::GU_NORMALS);
// Group the objects into a single subtree.
mPendulum = new0 Node();
mPendulum->AttachChild(rod);
mPendulum->AttachChild(bulb);
// Translate back to original model position.
mPendulum->LocalTransform.SetTranslate(APoint(0.0f, 0.0f, 16.0f));
// Add a material for coloring.
Float4 black(0.0f, 0.0f, 0.0f, 1.0f);
Float4 white(1.0f, 1.0f, 1.0f, 1.0f);
Material* material = new0 Material();
material->Emissive = black;
material->Ambient = Float4(0.1f, 0.1f, 0.1f, 1.0f);
material->Diffuse = Float4(0.99607f, 0.83920f, 0.67059f, 1.0f);
material->Specular = black;
// Use two lights to illuminate the pendulum.
Light* light[2];
light[0] = new0 Light(Light::LT_DIRECTIONAL);
light[0]->Ambient = white;
light[0]->Diffuse = white;
light[0]->Specular = black;
light[0]->SetDirection(AVector(-1.0f, -1.0f, 0.0f));
light[1] = new0 Light(Light::LT_DIRECTIONAL);
light[1]->Ambient = white;
light[1]->Diffuse = white;
light[1]->Specular = black;
light[1]->SetDirection(AVector(+1.0f, -1.0f, 0.0f));
// TODO: The following code is used to piece together an effect with
// two passes. It is better to write an effect whose vertex shader
// has constants corresponding to the two lights (for a single-pass
// effect).
LightDirPerVerEffect* effect = new0 LightDirPerVerEffect();
VisualTechnique* technique = effect->GetTechnique(0);
VisualPass* pass0 = technique->GetPass(0);
VisualPass* pass1 = new0 VisualPass();
pass1->SetVertexShader(pass0->GetVertexShader());
pass1->SetPixelShader(pass0->GetPixelShader());
AlphaState* astate = new0 AlphaState();
astate->BlendEnabled = true;
astate->SrcBlend = AlphaState::SBM_ONE;
astate->DstBlend = AlphaState::DBM_ONE;
pass1->SetAlphaState(astate);
pass1->SetCullState(pass0->GetCullState());
pass1->SetDepthState(pass0->GetDepthState());
pass1->SetStencilState(pass0->GetStencilState());
pass1->SetOffsetState(pass0->GetOffsetState());
pass1->SetWireState(pass0->GetWireState());
technique->InsertPass(pass1);
VisualEffectInstance* instance = new0 VisualEffectInstance(effect, 0);
for (int pass = 0; pass < 2; ++pass)
{
instance->SetVertexConstant(pass, 0,
new0 PVWMatrixConstant());
instance->SetVertexConstant(pass, 1,
new0 CameraModelPositionConstant());
instance->SetVertexConstant(pass, 2,
new0 MaterialEmissiveConstant(material));
instance->SetVertexConstant(pass, 3,
new0 MaterialAmbientConstant(material));
instance->SetVertexConstant(pass, 4,
new0 MaterialDiffuseConstant(material));
instance->SetVertexConstant(pass, 5,
new0 MaterialSpecularConstant(material));
instance->SetVertexConstant(pass, 6,
new0 LightModelDVectorConstant(light[pass]));
instance->SetVertexConstant(pass, 7,
new0 LightAmbientConstant(light[pass]));
instance->SetVertexConstant(pass, 8,
new0 LightDiffuseConstant(light[pass]));
instance->SetVertexConstant(pass, 9,
new0 LightSpecularConstant(light[pass]));
instance->SetVertexConstant(pass, 10,
new0 LightAttenuationConstant(light[pass]));
}
rod->SetEffectInstance(instance);
bulb->SetEffectInstance(instance);
return mPendulum;
}