src/glsl/TODO

   1 - Handle constant expressions of (struct == struct)
   2
   3 - Handle constant expressions of (struct != struct)
   4
   5 - Treat built-in functions with constant parameters as constant expressions.
   6   - Rewrite all built-in functions return a single expression.
   7   - Modify the HIR generator for functions to automatically inline built-in
   8     functions durning translation.
   9   - Care must be taken to handle both the 1.10 rules and the 1.20+ rules.  In
  10     1.10, built-in functions cannot be constant expressions.
  11
  12 - Detect code paths in non-void functions that don't reach a return statement
  13
  14 - Handle over-riding built-in functions
  15   - Is the overload per-compilation unit or per-linked shader?
  16
  17 - Handle redeclaration of built-in variables
  18   - Handle addition of qualifiers such as 'invariant' or 'centroid'.
  19   - Handle resizing of arrays.
  20   - Other?  We'll have to look at the spec.
  21
  22 - Improve handling of constants and their initializers.  Constant initializers
  23   should never generate any code.  This is trival for scalar constants.  It is
  24   also trivial for arrays, matrices, and vectors that are accessed with
  25   constant index values.  For others it is more complicated.  Perhaps these
  26   cases should be silently converted to uniforms?
  27
  28 1.30 features:
  29
  30 - Implement AST-to-HIR conversion of bit-shift operators.
  31
  32 - Implement AST-to-HIR conversion of bit-wise {&,|,^,!} operators.
  33
  34 - Implement AST-to-HIR conversion of switch-statements
  35   - switch
  36   - case
  37   - Update break to correcly handle mixed nexting of switch-statements
  38     and loops.
  39
  40 - Handle currently unsupported constant expression types
  41   - ir_unop_bit_not
  42   - ir_binop_mod
  43   - ir_binop_lshift
  44   - ir_binop_rshift
  45   - ir_binop_bit_and
  46   - ir_binop_bit_xor
  47   - ir_binop_bit_or
  48
  49 - Implement support for 1.30 style shadow compares which only return a float
  50   instead of a vec4.