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authorChia-I Wu <[email protected]>2010-12-04 12:03:07 +0800
committerChia-I Wu <[email protected]>2010-12-04 13:20:38 +0800
commite8ff3931f801dffdfd54832c298351e933688235 (patch)
tree44a830b96b474489bce1b7b02fa3d0008e799a35 /src/mesa/sources.mak
parenta19eaaa6c1956add5343295af7e9f682efa08d74 (diff)
st/vega: Add support for per-channel alpha.
Drawing an image in VG_DRAW_IMAGE_STENCIL mode produces per-channel alpha for use in blending. Add a new shader stage to produce and save it in TEMP[1]. For other modes that do not need per-channel alpha, the stage does MOV TEMP[1], TEMP[0].wwww
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