/*-----------------------------------------------------------------------------------------------
Description:
Governs window creation, the initial OpenGL configuration (face culling, depth mask, even
though this is a 2D demo and that stuff won't be of concern), the creation of geometry, and
the creation of a texture.
Parameters:
argc (From main(...)) The number of char * items in argv. For glut's initialization.
argv (From main(...)) A collection of argument strings. For glut's initialization.
Returns:
False if something went wrong during initialization, otherwise true;
Exception: Safe
Creator: John Cox (3-7-2016)
-----------------------------------------------------------------------------------------------*/
void Init()
{
glEnable(GL_CULL_FACE);
glCullFace(GL_BACK);
glFrontFace(GL_CCW);
glEnable(GL_DEPTH_TEST);
glDepthMask(GL_TRUE);
glDepthFunc(GL_LEQUAL);
glDepthRange(0.0f, 1.0f);
gProgramId = GenerateShaderProgram();
gUnifMatrixTransform = glGetUniformLocation(gProgramId, "translateMatrixWindowSpace");
gUnifTextureSampler = glGetUniformLocation(gProgramId, "tex");
GenerateTriangle(&gTriangle);
GenerateBox(&gBox);
GenerateCircle(&gCircle);
InitializeGeometry(gProgramId, &gTriangle);
InitializeGeometry(gProgramId, &gBox);
InitializeGeometry(gProgramId, &gCircle);
gTexture1Id = CreateRandom3BeamTexture();
gTexture2Id = CreateRandom3BeamTexture();
gTexture3Id = CreateRandom3BeamTexture();
// the textures all share the same properties, so I'll use the same sampler for all
gSamplerId = CreateGenericSampler();
}
SubMesh* Mesh::BuildSubMesh(const Primitive& primitive, const MeshParams& params)
{
#if NAZARA_UTILITY_SAFE
if (!m_impl)
{
NazaraError("Mesh not created");
return nullptr;
}
if (m_impl->animationType != AnimationType_Static)
{
NazaraError("Mesh must be static");
return nullptr;
}
if (!params.IsValid())
{
NazaraError("Parameters must be valid");
return nullptr;
}
#endif
Boxf aabb;
IndexBufferRef indexBuffer;
VertexBufferRef vertexBuffer;
Matrix4f matrix(primitive.matrix);
matrix.ApplyScale(params.scale);
VertexDeclaration* declaration = VertexDeclaration::Get(VertexLayout_XYZ_Normal_UV_Tangent);
switch (primitive.type)
{
case PrimitiveType_Box:
{
unsigned int indexCount;
unsigned int vertexCount;
ComputeBoxIndexVertexCount(primitive.box.subdivision, &indexCount, &vertexCount);
indexBuffer = IndexBuffer::New(vertexCount > std::numeric_limits<UInt16>::max(), indexCount, params.storage, BufferUsage_Static);
vertexBuffer = VertexBuffer::New(declaration, vertexCount, params.storage, BufferUsage_Static);
VertexMapper vertexMapper(vertexBuffer, BufferAccess_WriteOnly);
VertexPointers pointers;
pointers.normalPtr = vertexMapper.GetComponentPtr<Vector3f>(VertexComponent_Normal);
pointers.positionPtr = vertexMapper.GetComponentPtr<Vector3f>(VertexComponent_Position);
pointers.tangentPtr = vertexMapper.GetComponentPtr<Vector3f>(VertexComponent_Tangent);
pointers.uvPtr = vertexMapper.GetComponentPtr<Vector2f>(VertexComponent_TexCoord);
IndexMapper indexMapper(indexBuffer, BufferAccess_WriteOnly);
GenerateBox(primitive.box.lengths, primitive.box.subdivision, matrix, primitive.textureCoords, pointers, indexMapper.begin(), &aabb);
break;
}
case PrimitiveType_Cone:
{
unsigned int indexCount;
unsigned int vertexCount;
ComputeConeIndexVertexCount(primitive.cone.subdivision, &indexCount, &vertexCount);
indexBuffer = IndexBuffer::New(vertexCount > std::numeric_limits<UInt16>::max(), indexCount, params.storage, BufferUsage_Static);
vertexBuffer = VertexBuffer::New(declaration, vertexCount, params.storage, BufferUsage_Static);
VertexMapper vertexMapper(vertexBuffer, BufferAccess_WriteOnly);
VertexPointers pointers;
pointers.normalPtr = vertexMapper.GetComponentPtr<Vector3f>(VertexComponent_Normal);
pointers.positionPtr = vertexMapper.GetComponentPtr<Vector3f>(VertexComponent_Position);
pointers.tangentPtr = vertexMapper.GetComponentPtr<Vector3f>(VertexComponent_Tangent);
pointers.uvPtr = vertexMapper.GetComponentPtr<Vector2f>(VertexComponent_TexCoord);
IndexMapper indexMapper(indexBuffer, BufferAccess_WriteOnly);
GenerateCone(primitive.cone.length, primitive.cone.radius, primitive.cone.subdivision, matrix, primitive.textureCoords, pointers, indexMapper.begin(), &aabb);
break;
}
case PrimitiveType_Plane:
{
unsigned int indexCount;
unsigned int vertexCount;
ComputePlaneIndexVertexCount(primitive.plane.subdivision, &indexCount, &vertexCount);
indexBuffer = IndexBuffer::New(vertexCount > std::numeric_limits<UInt16>::max(), indexCount, params.storage, BufferUsage_Static);
vertexBuffer = VertexBuffer::New(declaration, vertexCount, params.storage, BufferUsage_Static);
VertexMapper vertexMapper(vertexBuffer, BufferAccess_WriteOnly);
VertexPointers pointers;
pointers.normalPtr = vertexMapper.GetComponentPtr<Vector3f>(VertexComponent_Normal);
pointers.positionPtr = vertexMapper.GetComponentPtr<Vector3f>(VertexComponent_Position);
pointers.tangentPtr = vertexMapper.GetComponentPtr<Vector3f>(VertexComponent_Tangent);
pointers.uvPtr = vertexMapper.GetComponentPtr<Vector2f>(VertexComponent_TexCoord);
IndexMapper indexMapper(indexBuffer, BufferAccess_WriteOnly);
GeneratePlane(primitive.plane.subdivision, primitive.plane.size, matrix, primitive.textureCoords, pointers, indexMapper.begin(), &aabb);
break;
}
case PrimitiveType_Sphere:
{
switch (primitive.sphere.type)
{
case SphereType_Cubic:
{
unsigned int indexCount;
unsigned int vertexCount;
ComputeCubicSphereIndexVertexCount(primitive.sphere.cubic.subdivision, &indexCount, &vertexCount);
indexBuffer = IndexBuffer::New(vertexCount > std::numeric_limits<UInt16>::max(), indexCount, params.storage, BufferUsage_Static);
vertexBuffer = VertexBuffer::New(declaration, vertexCount, params.storage, BufferUsage_Static);
VertexMapper vertexMapper(vertexBuffer, BufferAccess_ReadWrite);
VertexPointers pointers;
pointers.normalPtr = vertexMapper.GetComponentPtr<Vector3f>(VertexComponent_Normal);
pointers.positionPtr = vertexMapper.GetComponentPtr<Vector3f>(VertexComponent_Position);
pointers.tangentPtr = vertexMapper.GetComponentPtr<Vector3f>(VertexComponent_Tangent);
pointers.uvPtr = vertexMapper.GetComponentPtr<Vector2f>(VertexComponent_TexCoord);
IndexMapper indexMapper(indexBuffer, BufferAccess_WriteOnly);
GenerateCubicSphere(primitive.sphere.size, primitive.sphere.cubic.subdivision, matrix, primitive.textureCoords, pointers, indexMapper.begin(), &aabb);
break;
}
case SphereType_Ico:
{
unsigned int indexCount;
unsigned int vertexCount;
ComputeIcoSphereIndexVertexCount(primitive.sphere.ico.recursionLevel, &indexCount, &vertexCount);
indexBuffer = IndexBuffer::New(vertexCount > std::numeric_limits<UInt16>::max(), indexCount, params.storage, BufferUsage_Static);
vertexBuffer = VertexBuffer::New(declaration, vertexCount, params.storage, BufferUsage_Static);
VertexMapper vertexMapper(vertexBuffer, BufferAccess_WriteOnly);
VertexPointers pointers;
pointers.normalPtr = vertexMapper.GetComponentPtr<Vector3f>(VertexComponent_Normal);
pointers.positionPtr = vertexMapper.GetComponentPtr<Vector3f>(VertexComponent_Position);
pointers.tangentPtr = vertexMapper.GetComponentPtr<Vector3f>(VertexComponent_Tangent);
pointers.uvPtr = vertexMapper.GetComponentPtr<Vector2f>(VertexComponent_TexCoord);
IndexMapper indexMapper(indexBuffer, BufferAccess_WriteOnly);
GenerateIcoSphere(primitive.sphere.size, primitive.sphere.ico.recursionLevel, matrix, primitive.textureCoords, pointers, indexMapper.begin(), &aabb);
break;
}
case SphereType_UV:
{
unsigned int indexCount;
unsigned int vertexCount;
ComputeUvSphereIndexVertexCount(primitive.sphere.uv.sliceCount, primitive.sphere.uv.stackCount, &indexCount, &vertexCount);
indexBuffer = IndexBuffer::New(vertexCount > std::numeric_limits<UInt16>::max(), indexCount, params.storage, BufferUsage_Static);
vertexBuffer = VertexBuffer::New(declaration, vertexCount, params.storage, BufferUsage_Static);
VertexMapper vertexMapper(vertexBuffer, BufferAccess_WriteOnly);
VertexPointers pointers;
pointers.normalPtr = vertexMapper.GetComponentPtr<Vector3f>(VertexComponent_Normal);
pointers.positionPtr = vertexMapper.GetComponentPtr<Vector3f>(VertexComponent_Position);
pointers.tangentPtr = vertexMapper.GetComponentPtr<Vector3f>(VertexComponent_Tangent);
pointers.uvPtr = vertexMapper.GetComponentPtr<Vector2f>(VertexComponent_TexCoord);
IndexMapper indexMapper(indexBuffer, BufferAccess_WriteOnly);
GenerateUvSphere(primitive.sphere.size, primitive.sphere.uv.sliceCount, primitive.sphere.uv.stackCount, matrix, primitive.textureCoords, pointers, indexMapper.begin(), &aabb);
break;
}
}
break;
}
}
StaticMeshRef subMesh = StaticMesh::New(this);
if (!subMesh->Create(vertexBuffer))
{
NazaraError("Failed to create StaticMesh");
return nullptr;
}
if (params.optimizeIndexBuffers)
indexBuffer->Optimize();
subMesh->SetAABB(aabb);
subMesh->SetIndexBuffer(indexBuffer);
AddSubMesh(subMesh);
return subMesh;
}
