Samsung S5PC110 Manual page 1773

S5PC110_UM
13.4.1.1.3 Transparent Mode
FIMG-2D V3.0 can render image in Transparent Mode. In this mode, the pixels having the same color with blue
screen color (BS_COLOR_REG) are discarded, resulting in a transparent effect. The function of Transparent
Mode is illustrated in the images below, in which the BS_COLOR_REG is set to white.
FIMG-2D V3.0 also support Blue Screen Mode, in which the pixels having the same color with blue screen color
(BS_COLOR_REG) are replaced by the background color (BG_COLOR_REG).
FIMG-2D V3.0 supports both memory-to-memory mode and memory-to-screen mode of BLT.
13.4.1.1.4 Related Registers
SRC_LEFT_TOP_REG
SRC_RIGHT_BOTTOM_REG
SRC_SELECT_REG
DST_LEFT_TOP_REG
DST_RIGHT_BOTTOM_REG
DST_SELECT_REG
SRC_BASE_ADDR_REG
DST_BASE_ADDR_REG
SRC_SIZE_REG
DST_SIZE_REG
SRC_COLOR_MODE_REG
DST_COLOR_MODE_REG
FG_COLOR_REG
BG_COLOR_REG
BS_COLOR_REG
BITBLT_COMMAND_REG
Coordinate of the leftmost topmost coordinate of the source image.
Coordinate of the rightmost bottommost coordinate of the source image.
Select one of the following cases - 2'b00: normal mode (source image in the
memory), 2'b01: foreground color, 2'b10: background color.
Coordinate of the leftmost topmost coordinate of the destination image.
Coordinate of the rightmost bottommost coordinate of the destination image.
Select one of the following cases - 2'b00: normal mode (destination image in
the memory), 2'b01: foreground color, 2'b10: background color.
The base address of the source image (when normal mode is used in
SRC_SELECT_REG).
The base address of the destination image (usually the frame buffer base
address).
The width and height of the source image.
The width and height of the destination image.
The color format and channel order of the source image.
The color format and channel order of the destination image.
Foreground color value.
Background color value.
Blue screen color value.
Enable/disable Transparent Mode or Blue Screen Mode.
13 12BG2D
13-4