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ispc/tests/struct-vary-index-expr.ispc
Matt Pharr d2d5858be1 It is no longer legal to initialize arrays and structs with single
scalar values (that ispc used to smear across the array/struct
elements).  Now, initializers in variable declarations must be
{ }-delimited lists, with one element per struct member or array
element, respectively.

There were a few problems with the previous implementation of the
functionality to initialize from scalars.  First, the expression
would be evaluated once per value initialized, so if it had side-effects,
the wrong thing would happen.  Next, for large multidimensional arrays,
the generated code would be a long series of move instructions, rather
than loops (and this in turn made LLVM take a long time.)

While both of these problems are fixable, it's a non-trivial
amount of re-plumbing for a questionable feature anyway.

Fixes issue #50.
2011-07-01 13:45:58 +01:00

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export uniform int width() { return programCount; }
struct Foo { float f; };
export void f_fu(uniform float RET[], uniform float aFOO[], uniform float b) {
float a = aFOO[programIndex];
uniform Foo foo[17];
for (uniform int i = 0; i < 17; ++i)
foo[i].f = a;
++foo[a].f;
uniform int i[16] = { 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16 };
RET[programIndex] = foo[i[programIndex]].f;
}
export void result(uniform float RET[]) { RET[programIndex] = 2+programIndex; }