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Diffstat (limited to 'include/gpu/GrPaint.h')
| -rw-r--r-- | include/gpu/GrPaint.h | 14 |
1 files changed, 3 insertions, 11 deletions
diff --git a/include/gpu/GrPaint.h b/include/gpu/GrPaint.h index 8163f6e4d8..64b51d2c65 100644 --- a/include/gpu/GrPaint.h +++ b/include/gpu/GrPaint.h @@ -25,23 +25,15 @@ * created by subclassing GrProcessor. * * The primitive color computation starts with the color specified by setColor(). This color is the - * input to the first color stage. Each color stage feeds its output to the next color stage. The - * final color stage's output color is input to the color filter specified by - * setXfermodeColorFilter which produces the final source color, S. + * input to the first color stage. Each color stage feeds its output to the next color stage. * * Fractional pixel coverage follows a similar flow. The coverage is initially the value specified * by setCoverage(). This is input to the first coverage stage. Coverage stages are chained * together in the same manner as color stages. The output of the last stage is modulated by any * fractional coverage produced by anti-aliasing. This last step produces the final coverage, C. * - * setBlendFunc() specifies blending coefficients for S (described above) and D, the initial value - * of the destination pixel, labeled Bs and Bd respectively. The final value of the destination - * pixel is then D' = (1-C)*D + C*(Bd*D + Bs*S). - * - * Note that the coverage is applied after the blend. This is why they are computed as distinct - * values. - * - * TODO: Encapsulate setXfermodeColorFilter in a GrProcessor and remove from GrPaint. + * setXPFactory is used to control blending between the output color and dest. It also implements + * the application of fractional coverage from the coverage pipeline. */ class GrPaint { public: |