diff options
Diffstat (limited to 'src/gpu/gl/GrGLSL.h')
| -rw-r--r-- | src/gpu/gl/GrGLSL.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/src/gpu/gl/GrGLSL.h b/src/gpu/gl/GrGLSL.h index 6595608615..cbff273382 100644 --- a/src/gpu/gl/GrGLSL.h +++ b/src/gpu/gl/GrGLSL.h @@ -144,6 +144,19 @@ GrSLConstantVec GrGLSLModulate4f(SkString* outAppend, GrSLConstantVec default0 = kOnes_GrSLConstantVec, GrSLConstantVec default1 = kOnes_GrSLConstantVec); +/** + * Does an inplace mul, *=, of vec4VarName by mulFactor. If mulFactorDefault is not kNone then + * mulFactor may be either "" or NULL. In this case either nothing will be appened (kOnes) or an + * assignment of vec(0,0,0,0) will be appended (kZeros). The assignment is prepended by tabCnt tabs. + * A semicolon and newline are added after the assignment. (TODO: Remove tabCnt when we auto-insert + * tabs to custom stage-generated lines.) If a zeros vec is assigned then the return value is + * kZeros, otherwise kNone. + */ +GrSLConstantVec GrGLSLMulVarBy4f(SkString* outAppend, + int tabCnt, + const char* vec4VarName, + const char* mulFactor, + GrSLConstantVec mulFactorDefault = kOnes_GrSLConstantVec); /** * Produces a string that is the result of adding two inputs. The inputs must be vec4 or float. |