2021-01-06 02:38:59 +00:00
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8 registers, 22 instructions:
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2021-01-08 19:45:42 +00:00
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0 r0 = uniform32 ptr0 4
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1 r1 = uniform32 ptr0 8
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2 r2 = uniform32 ptr0 C
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always init function fReturnValue
It's not sound to pass undefined (skvm::NA) values into select(),
but this is working today because the F32a argument is 'fixing' it.
The first time through this snippet updating fReturn value,
int i = 0;
for (skvm::Val& slot : currentFunction().fReturnValue) {
slot = select(returnsHere, f32(val[i]), f32(slot)).id;
i++;
}
the call to f32(slot) creates an F32{builder, NA}. We pass that to
select() and that argument's F32a(F32) constructor, resulting in
F32a{builder, NA, 0.0f}. Then when we need that as an F32, we resolve
it as splat(0.0f) because the F32a's id field is NA.
In short, best to remove F32a. :)
Added some SkASSERTs that would have caught this.
Change-Id: I67324cf20ad39ca555e69b9c407f379d14046043
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/353838
Commit-Queue: Mike Klein <mtklein@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
2021-01-14 16:15:00 +00:00
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3 r3 = splat 0 (0)
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4 r4 = splat FFFFFFFF (nan)
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5 r5 = neq_f32 r0 r3
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2021-01-06 02:38:59 +00:00
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6 r6 = splat 3F800000 (1)
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7 r6 = bit_and r6 r2
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8 r7 = to_f32 r1
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9 r7 = select r5 r6 r7
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always init function fReturnValue
It's not sound to pass undefined (skvm::NA) values into select(),
but this is working today because the F32a argument is 'fixing' it.
The first time through this snippet updating fReturn value,
int i = 0;
for (skvm::Val& slot : currentFunction().fReturnValue) {
slot = select(returnsHere, f32(val[i]), f32(slot)).id;
i++;
}
the call to f32(slot) creates an F32{builder, NA}. We pass that to
select() and that argument's F32a(F32) constructor, resulting in
F32a{builder, NA, 0.0f}. Then when we need that as an F32, we resolve
it as splat(0.0f) because the F32a's id field is NA.
In short, best to remove F32a. :)
Added some SkASSERTs that would have caught this.
Change-Id: I67324cf20ad39ca555e69b9c407f379d14046043
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/353838
Commit-Queue: Mike Klein <mtklein@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
2021-01-14 16:15:00 +00:00
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10 r3 = eq_i32 r1 r3
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11 r3 = bit_xor r4 r3
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12 r4 = splat 1 (1.4012985e-45)
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2021-01-14 18:11:48 +00:00
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13 r2 = bit_and r4 r2
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2021-01-06 02:38:59 +00:00
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14 r0 = trunc r0
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2021-01-14 18:11:48 +00:00
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15 r0 = select r3 r2 r0
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2021-01-06 02:38:59 +00:00
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16 r0 = to_f32 r0
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17 r0 = mul_f32 r7 r0
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loop:
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2021-01-08 19:45:42 +00:00
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18 store32 ptr1 r0
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19 store32 ptr2 r0
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20 store32 ptr3 r0
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21 store32 ptr4 r0
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