// This is the list of alternatives for +-/, * is special due to the vector/matrix multiplication
private static GLSLFunctionType[] getBasicArithmeticOperatorAlternatives(String name) {
List<GLSLFunctionType> dest = new ArrayList<GLSLFunctionType>();
getCommonArithmeticOperatorAlternatives(name, dest);
for (int cols = 2; cols <= 4; cols++) {
for (int rows = 2; rows <= 4; rows++) {
GLSLMatrixType mat = GLSLMatrixType.getType(cols, rows);
dest.add(new GLSLBasicFunctionType(name, mat, mat, mat));
}
}
return dest.toArray(new GLSLFunctionType[dest.size()]);
}
private static GLSLFunctionType[] getMultiplicationOperatorAlternatives() {
List<GLSLFunctionType> dest = new ArrayList<GLSLFunctionType>();
getCommonArithmeticOperatorAlternatives("*", dest);
// matrix-matrix AND matrix-vector
for (int M = 2; M <= 4; M++) {
for (int N = 2; N <= 4; N++) {
GLSLMatrixType matMxN = GLSLMatrixType.getType(M, N);
GLSLVectorType vecM = GLSLVectorType.getType(M, GLSLTypes.FLOAT);
GLSLVectorType vecN = GLSLVectorType.getType(N, GLSLTypes.FLOAT);
dest.add(new GLSLBasicFunctionType("*", vecM, matMxN, vecN));
dest.add(new GLSLBasicFunctionType("*", vecN, vecM, matMxN));
for (int I = 2; I <= 4; I++) {
GLSLMatrixType matIxM = GLSLMatrixType.getType(I, M);
GLSLMatrixType matIxN = GLSLMatrixType.getType(I, N);
dest.add(new GLSLBasicFunctionType("*", matIxN, matMxN, matIxM));
}
}
}
return dest.toArray(new GLSLFunctionType[dest.size()]);
}
private static GLSLFunctionType[] getUnaryArithmeticOperatorAlternatives(String name) {
List<GLSLFunctionType> dest = new ArrayList<GLSLFunctionType>();
dest.add(new GLSLBasicFunctionType(name, GLSLTypes.INT, GLSLTypes.INT));
dest.add(new GLSLBasicFunctionType(name, GLSLTypes.FLOAT, GLSLTypes.FLOAT));
for (int i = 2; i <= 4; i++) {
GLSLType vec = GLSLVectorType.getType(i, GLSLTypes.FLOAT);
GLSLType ivec = GLSLVectorType.getType(i, GLSLTypes.INT);
dest.add(new GLSLBasicFunctionType(name, vec, vec));
dest.add(new GLSLBasicFunctionType(name, ivec, ivec));
for (int j = 2; j <= 4; j++) {
GLSLType mat = GLSLMatrixType.getType(i, j);
dest.add(new GLSLBasicFunctionType(name, mat, mat));
}
}
return dest.toArray(new GLSLFunctionType[dest.size()]);
}