Modifying a material priority

Changing a material priority is very easy, you just need to call the RED::IMaterial::SetPriority function:

// Let imat1, imat2 and imat3 three existing RED::IMaterial.
// Let ishape1, ishape2 and ishape3 three RED::IShape.

// Change the material priorities:
RC_TEST( imat1->SetPriority( 1, iresmgr->GetState() ) );
RC_TEST( imat2->SetPriority( 0, iresmgr->GetState() ) );
// imat3 keeps it default priority.

// Set the material to the shapes:
RC_TEST( ishape1->SetMaterial( mat1, iresmgr->GetState() ) );
RC_TEST( ishape2->SetMaterial( mat2, iresmgr->GetState() ) );
RC_TEST( ishape3->SetMaterial( mat3, iresmgr->GetState() ) );

The previous code sample defines three RED::IMeshShape, each with its own material.

Material priorities are defined as:

priority 1 for the material of the shape 1;
priority 0 for the material of the shape 2;
default priority for the material of the shape 3.

The rendering order will be:

shape 2 (priority 0);
shape 1 (priority 1);
shape 3 (default priority).

Iterating over lights in a software shader

Mimicking a direct shader setup for indirect rendering passes next page