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[diderot] Diff of /branches/pure-cfg/TODO
 [diderot] / branches / pure-cfg / TODO

# Diff of /branches/pure-cfg/TODO

revision 763, Thu Apr 7 19:57:56 2011 UTC revision 818, Wed Apr 13 18:38:55 2011 UTC
# Line 1  Line 1
1    ========================
2    SHORT TERM =============  (for curvature-based VR)
3    ========================
4
5    want: warnings when D (and likely I) is declared as a
6    variable name (now get confusing error messages now)
7
8    For RGB color output of 2D transfer function (indexed by
9    kappa1,kappa2), or for a 1D transfer function, will need
10    something akin to convolution on vector images
11
12    IL support for higher-order tensor values (matrices, etc).
13        tensor construction [DONE]
14        tensor indexing [DONE]
15        tensor slicing
16        verify that hessians work correctly
17
18  Outer products  Outer products
19      syntax [DONE]      syntax [DONE]
20      typechecking      typechecking
21      IL and codegen      IL and codegen
22
23  Add M dot v, v dot M, and M dot N  Add M dot v, v dot M, and M dot N [DONE]
24
25  Identity matrix [DONE up to code generation]  Identity matrix [DONE up to code generation]
26
27  trace [DONE]  trace [DONE]
28
29  expand trace in mid to low translation  extend norm (|exp|) to tensor[3,3]

extend norm (|exp|) to all tensor types

Infix dot product and cross product [DONE]

lerp on scalars and vectors [DONE]
30
31  Use ∇⊗ etc syntax  Use ∇⊗ etc. syntax
32      syntax [DONE]      syntax [DONE]
33      typechecking      typechecking
34      IL and codegen      IL and codegen
# Line 28  Line 39
39          value construction: '{' e1 ',' … ',' en '}'          value construction: '{' e1 ',' … ',' en '}'
40          indexing: e '{' e '}'          indexing: e '{' e '}'
41
42  IL support for higher-order tensor values (matrices, etc).  Infix dot product and cross product [DONE]
43      tensor construction
44      tensor indexing and slicing  lerp on scalars and vectors [DONE]
45
46    ==============================
47    other SHORT TERM =============  (including needed for LIC)
48    ==============================
49
50    determinant ("det") for tensor[3,3]
51
52    Decide if we want to allow redefinitions of variables
53      (as in vr-lite-cam.diderot)
54
55    extend norm (|exp|) to all tensor types
56
57    extend normalize to all tensor types
58
59    vector fields: convolution on vector images
60
61    expand trace in mid to low translation
62
63    value-numbering optimization
64
65  Add type aliases for color types  Add type aliases for color types
66      rgb = real{3}      rgb = real{3}
67      rgba = real{4}      rgba = real{4}
68
69    ==============================
70    MEDIUM TERM ================== (needed for streamlines & tractography)
71    ==============================
72
73    ability to emit/track/record variables into dynamically re-sized
74    runtime buffer
75
76    evals & evecs for symmetric tensor[3,3]
77
78    tensor fields: convolution on general tensor images
79
80    ==============================
81    other MEDIUM TERM ============ (needed for particles)
82    ==============================
83
84    run-time birth and death of strands
85
86    "initially" supports lists
87
88    "initially" supports lists of positions output from
89    different initalization Diderot program
90
91    spatial data structure that permits strands' queries of neighbors
92
93    proper handling of stabilize method
94
95    Add support for code like
96
97            (F1 if x else F2)@pos
98
99    This will require duplication of the continuation of the conditional (but we should only
100    duplicate over the live-range of the result of the conditional.
101
102    ==============================
103    other MEDIUM TERM ============
104    ==============================
105
106    support fog Python interop and GUI
107
108    ==============================
109    LONG TERM ====================
110    ==============================
111
112    Better handling of variables that determines the scope of a variable based on its actual use,
113    instead of where the user defined it.  So, for example, we should lift strand-invariant variables
114    to global scope.  Also prune out useless variables, which should include field variables after the
115    translation to mid-il.
116
117    co- vs contra- index distinction
118
119    add ":" for tensor dot product (contracts out two indices
120    instead of one like •), valid for all pairs of tensors with
121    at least two indices
122
123    some indication of tensor symmetry
124    (have to identify the group of index permutations that are symmetries)
125
126    dot works on all tensors
127
128    outer works on all tensors
129
130    Einstein summation notation
131
132    "tensor comprehension" (like list comprehension)
133
134    Python/ctypes interface to run-timez
135
136    ======================
137    BUGS =================
138    ======================
139
140    test/mip-cam.diderot:
141        // generated C code looks like "(float)p_ui_0--0.5e0f"
142        //real rayU = 2.0*camUmax*(real(ui) - -0.5)/real(imgResU) - camUmax;
143
144    test/vr-kcomp.diderot:
145        // HEY (scoping BUG): the strand parameters (e.g. ui, vi) ...
146
147    test/zslice2.diderot:
148    // but is this not valid syntax for creating field in one shot?
149    //field#2(3)[] F = (load("../data/zimg112.nrrd")) ⊛ bspln3;
150    // It is valid syntax, but there is a bug in the conversion from HighIL to MidIL
151
152    test/zslice2.diderot:
153    // HEY (bug) bspln5 leads to problems ...
154    //  uncaught exception Size [size]
155    //    raised at c-target/c-target.sml:47.15-47.19
156    //field#4(3)[] F = img ⊛ bspln5;
157
158

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