Track if all stages modulate inputColor in computeInvariantOutput

Track if all stages modulate inputColor in computeInvariantOutput

BUG=skia:

Committed: https://skia.googlesource.com/skia/+/ab84fae29fdee95987b10c00ff34957476a66263

[egdaniel, 2014-10-13 19:19:07]

egdaniel@google.com changed reviewers:
+ bsalomon@google.com

[bsalomon, 2014-10-13 19:52:49]

https://codereview.chromium.org/647863002/diff/140001/include/gpu/GrProcessor.h
File include/gpu/GrProcessor.h (right):

https://codereview.chromium.org/647863002/diff/140001/include/gpu/GrProcessor...
include/gpu/GrProcessor.h:42: fInputIsOnlyModulated(true) {}
I seems like we should use multiply rather than modulated since all the
functions are mulByFoo. fStagesAllMultiplicative? fNonMulStageFound?

https://codereview.chromium.org/647863002/diff/140001/include/gpu/GrProcessor...
include/gpu/GrProcessor.h:118: void setToUnknownPriv() {
usually term such things internalSetToUnknown().

[egdaniel, 2014-10-13 20:26:47]

https://codereview.chromium.org/647863002/diff/140001/include/gpu/GrProcessor.h
File include/gpu/GrProcessor.h (right):

https://codereview.chromium.org/647863002/diff/140001/include/gpu/GrProcessor...
include/gpu/GrProcessor.h:42: fInputIsOnlyModulated(true) {}
On 2014/10/13 19:52:49, bsalomon wrote:
> I seems like we should use multiply rather than modulated since all the
> functions are mulByFoo. fStagesAllMultiplicative? fNonMulStageFound? 

Done.

https://codereview.chromium.org/647863002/diff/140001/include/gpu/GrProcessor...
include/gpu/GrProcessor.h:118: void setToUnknownPriv() {
On 2014/10/13 19:52:49, bsalomon wrote:
> usually term such things internalSetToUnknown().

Done.

[bsalomon, 2014-10-13 20:48:25]

lgtm

[egdaniel, 2014-10-14 13:40:40]

The CQ bit was checked by egdaniel@google.com

[commit-bot: I haz the power, 2014-10-14 13:41:48]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/647863002/250001

[commit-bot: I haz the power, 2014-10-14 13:48:52]

Committed patchset #5 (id:250001) as ab84fae29fdee95987b10c00ff34957476a66263