/** Initialize the RHI for this rendering resource */
void InitRHI() override
{
TResourceArray<FFilterVertex, VERTEXBUFFER_ALIGNMENT> Vertices;
Vertices.SetNumUninitialized(6);
Vertices[0].Position = FVector4(1, 1, 0, 1);
Vertices[0].UV = FVector2D(1, 1);
Vertices[1].Position = FVector4(0, 1, 0, 1);
Vertices[1].UV = FVector2D(0, 1);
Vertices[2].Position = FVector4(1, 0, 0, 1);
Vertices[2].UV = FVector2D(1, 0);
Vertices[3].Position = FVector4(0, 0, 0, 1);
Vertices[3].UV = FVector2D(0, 0);
//The final two vertices are used for the triangle optimization (a single triangle spans the entire viewport )
Vertices[4].Position = FVector4(-1, 1, 0, 1);
Vertices[4].UV = FVector2D(-1, 1);
Vertices[5].Position = FVector4(1, -1, 0, 1);
Vertices[5].UV = FVector2D(1, -1);
// Create vertex buffer. Fill buffer with initial data upon creation
FRHIResourceCreateInfo CreateInfo(&Vertices);
VertexBufferRHI = RHICreateVertexBuffer(Vertices.GetResourceDataSize(), BUF_Static, CreateInfo);
}
/**
* Initialize the RHI for this rendering resource
*/
void InitRHI() override
{
const int32 NumVerts = 8;
TResourceArray<FVector4, VERTEXBUFFER_ALIGNMENT> Verts;
Verts.SetNumUninitialized(NumVerts);
for (uint32 Z = 0; Z < 2; Z++)
{
for (uint32 Y = 0; Y < 2; Y++)
{
for (uint32 X = 0; X < 2; X++)
{
const FVector4 Vertex = FVector4(
(X ? -1 : 1),
(Y ? -1 : 1),
(Z ? -1 : 1),
1.0f
);
Verts[GetCubeVertexIndex(X, Y, Z)] = Vertex;
}
}
}
uint32 Size = Verts.GetResourceDataSize();
// Create vertex buffer. Fill buffer with initial data upon creation
FRHIResourceCreateInfo CreateInfo(&Verts);
VertexBufferRHI = RHICreateVertexBuffer(Size, BUF_Static, CreateInfo);
}