All possible blend modes are listed here:
Mode
BSF BSI BDF BDI Blend equation
SRC_ONE DST_ONE
0
0
0
0
SRC + DST
SRC_ONE
0
0
0
1
SRC
SRC_ONEDST_ALPHA
0
0
1
0
SRC + DST*ALPHA
SRC_ONE DST_ONE_MINUS_ALPHA
0
0
1
1
SRC + DST * ( 1 – ALPHA )
SRC_ZERO DST_ONE
0
1
0
0
DST
SRC_ZERO DST_ZERO
0
1
0
1
0
SRC_ZERO DST_ALPHA
0
1
1
0
DST * ALPHA
SRC_ZERO DST_ONE_MINUS_ALPHA
0
1
1
1
DST * ( 1 - ALPHA )
SRC_ALPHA DST_ONE
1
0
0
0
SRC * ALPHA + DST
SRC_ALPHA
1
0
0
1
SRC * ALPHA
SRC_ALPHA DST_ALPHA
1
0
1
0
SRC * ALPHA + DST * ALPHA
SRC_ALPHA DST_ONE_MINUS_ALPHA
1
0
1
1
SRC * ALPHA + DST * ( 1 - ALPHA )
SRC_ONE_MINUS_ALPHA DST_ONE
1
1
0
0
SRC * ( 1 – ALPHA ) + DST
SRC_ONE_MINUS_ALPHA
1
1
0
1
SRC * ( 1 – ALPHA )
SRC_ONE_MINUS_ALPHA DST_ALPHA
1
1
1
0
SRC * ( 1 – ALPHA ) + DST * ALPHA
SRC_ONE_MINUS_ALPHA
DST_ONE_MINUS_ALPHA
1
1
1
1
SRC * ( 1 – ALPHA ) + DST * ( 1 – ALPHA )
Chapter 8
Drawing Engine
246
Preliminary User's Manual S19203EE1V3UM00
Summary of Contents for uPD72257
Page 39: ...Pin Functions Chapter 2 Preliminary User s Manual S19203EE1V3UM00 39...
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Page 52: ...Chapter 2 Pin Functions 52 Preliminary User s Manual S19203EE1V3UM00...
Page 54: ...Chapter 2 Pin Functions 54 Preliminary User s Manual S19203EE1V3UM00...
Page 331: ...External Memory Interface Controller Chapter 9 Preliminary User s Manual S19203EE1V3UM00 331...
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