enum GimpPixelFormat

typedef enum
{
  GIMP_PIXELFORMAT_V8,
  GIMP_PIXELFORMAT_VA8,
  GIMP_PIXELFORMAT_RGB8,
  GIMP_PIXELFORMAT_RGBA8,
  GIMP_PIXELFORMAT_ANY,
  GIMP_PIXELFORMAT_N
} GimpPixelFormat;

GIMP_COMPOSITE_ALPHA_OPAQUE

#define GIMP_COMPOSITE_ALPHA_OPAQUE      (-1)

GIMP_COMPOSITE_ALPHA_TRANSPARENT

#define GIMP_COMPOSITE_ALPHA_TRANSPARENT (0)

enum GimpCompositeOperation

typedef enum
{
  GIMP_COMPOSITE_NORMAL        = GIMP_NORMAL_MODE,
  GIMP_COMPOSITE_DISSOLVE      = GIMP_DISSOLVE_MODE,
  GIMP_COMPOSITE_BEHIND        = GIMP_BEHIND_MODE,
  GIMP_COMPOSITE_MULTIPLY      = GIMP_MULTIPLY_MODE,
  GIMP_COMPOSITE_SCREEN        = GIMP_SCREEN_MODE,
  GIMP_COMPOSITE_OVERLAY       = GIMP_OVERLAY_MODE,
  GIMP_COMPOSITE_DIFFERENCE    = GIMP_DIFFERENCE_MODE,
  GIMP_COMPOSITE_ADDITION      = GIMP_ADDITION_MODE,
  GIMP_COMPOSITE_SUBTRACT      = GIMP_SUBTRACT_MODE,
  GIMP_COMPOSITE_DARKEN        = GIMP_DARKEN_ONLY_MODE,
  GIMP_COMPOSITE_LIGHTEN       = GIMP_LIGHTEN_ONLY_MODE,
  GIMP_COMPOSITE_HUE           = GIMP_HUE_MODE,
  GIMP_COMPOSITE_SATURATION    = GIMP_SATURATION_MODE,
  GIMP_COMPOSITE_COLOR_ONLY    = GIMP_COLOR_MODE,
  GIMP_COMPOSITE_VALUE         = GIMP_VALUE_MODE,
  GIMP_COMPOSITE_DIVIDE        = GIMP_DIVIDE_MODE,
  GIMP_COMPOSITE_DODGE         = GIMP_DODGE_MODE,
  GIMP_COMPOSITE_BURN          = GIMP_BURN_MODE,
  GIMP_COMPOSITE_HARDLIGHT     = GIMP_HARDLIGHT_MODE,
  GIMP_COMPOSITE_SOFTLIGHT     = GIMP_SOFTLIGHT_MODE,
  GIMP_COMPOSITE_GRAIN_EXTRACT = GIMP_GRAIN_EXTRACT_MODE,
  GIMP_COMPOSITE_GRAIN_MERGE   = GIMP_GRAIN_MERGE_MODE,
  GIMP_COMPOSITE_COLOR_ERASE   = GIMP_COLOR_ERASE_MODE,
  GIMP_COMPOSITE_ERASE         = GIMP_ERASE_MODE,
  GIMP_COMPOSITE_REPLACE       = GIMP_REPLACE_MODE,
  GIMP_COMPOSITE_ANTI_ERASE    = GIMP_ANTI_ERASE_MODE,
  GIMP_COMPOSITE_BLEND,
  GIMP_COMPOSITE_SHADE,
  GIMP_COMPOSITE_SWAP,
  GIMP_COMPOSITE_SCALE,
  GIMP_COMPOSITE_CONVERT,
  GIMP_COMPOSITE_XOR,
  GIMP_COMPOSITE_N
} GimpCompositeOperation;

gimp_composite_dispatch ()

void                gimp_composite_dispatch             (GimpCompositeContext *ctx);

Given a compositing context, perform the compositing function dictated by the compositing context operation. There is no return value, all results are in the compositing context.

gimp_composite_init ()

void                gimp_composite_init                 (gboolean be_verbose,
                                                         gboolean use_cpu_accel);

Initialise the Gimp Compositing subsystem. This includes checking for user options and environment, installing the generic set of compositing operation handlers, followed by overloading those which are supported by the current cpu/hardware.

gimp_composite_context_print ()

void                gimp_composite_context_print        (GimpCompositeContext *ctx);

Print a human readable form of a GimpCompositeContext on stdout.

gimp_composite_pixelformat_astext ()

const gchar*        gimp_composite_pixelformat_astext   (GimpPixelFormat format);

Given a GimpPixelFormat, return a string representation of the name of that format.

gimp_composite_mode_astext ()

const gchar*        gimp_composite_mode_astext          (GimpCompositeOperation op);

Given a GimpCompositeOperatin, return a string representation of the name of that operation.

gimp_composite_use_cpu_accel ()

gboolean            gimp_composite_use_cpu_accel        (void);

GIMP_COMPOSITE_OPTION_NOEXTENSIONS

#define GIMP_COMPOSITE_OPTION_NOEXTENSIONS  0x2

GIMP_COMPOSITE_OPTION_USE

#define GIMP_COMPOSITE_OPTION_USE           0x1

GIMP_COMPOSITE_OPTION_VERBOSE

#define GIMP_COMPOSITE_OPTION_VERBOSE       0x4