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libhwcomposer: Disable alpha if layer blending is disabled

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If the layer blending has been disabled, disable copybit alpha so
that copybit does not perform any blend operation.

Change-Id: I9a83fad0f126adaf9540bc72d17e7dcb1c55cd0f
CRs-fixed: 288527
This commit is contained in:
Naomi Luis 2011-06-01 10:23:25 -07:00 committed by Govind Surti
parent 371fe1a442
commit c17c053935
1 changed files with 2 additions and 1 deletions
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3
libhwcomposer/hwcomposer.cpp
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@ -336,7 +336,8 @@ static int drawLayerUsingCopybit(hwc_composer_device_t *dev, hwc_layer_t *layer,
copybit_device_t *copybit = hwcModule->copybitEngine;
copybit->set_parameter(copybit, COPYBIT_TRANSFORM, layer->transform);
copybit->set_parameter(copybit, COPYBIT_PLANE_ALPHA, layer->alpha);
copybit->set_parameter(copybit, COPYBIT_PLANE_ALPHA,
(layer->blending == HWC_BLENDING_NONE) ? 0xFF : layer->alpha);
copybit->set_parameter(copybit, COPYBIT_PREMULTIPLIED_ALPHA,
(layer->blending == HWC_BLENDING_PREMULT)? COPYBIT_ENABLE : COPYBIT_DISABLE);
int err = copybit->stretch(copybit, &dst, &src, &dstRect, &srcRect, &copybitRegion);