text: ﻿/* $Revision: 9203 $ on $Date:: 2009-10-07 02:21:52 -0700 #$ */
  
  /*------------------------------------------------------------------------
   *
   * OpenVG 1.1 Reference Implementation
   * -------------------------------------
   *
   * Copyright (c) 2008 The Khronos Group Inc.
   *
   * Permission is hereby granted, free of charge, to any person obtaining a
   * copy of this software and /or associated documentation files
   * (the "Materials "), to deal in the Materials without restriction,
   * including without limitation the rights to use, copy, modify, merge,
   * publish, distribute, sublicense, and/or sell copies of the Materials,
   * and to permit persons to whom the Materials are furnished to do so,
   * subject to the following conditions: 
   *
   * The above copyright notice and this permission notice shall be included 
   * in all copies or substantial portions of the Materials. 
   *
   * THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
   * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
   * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
   * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
   * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
   * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE MATERIALS OR
   * THE USE OR OTHER DEALINGS IN THE MATERIALS.
   *
   *//**
   * \file
   * \brief	OpenVG 1.1 API.
   *//*-------------------------------------------------------------------*/
  
  #ifndef _OPENVG_H
  #define _OPENVG_H
  
  #include <VG/vgplatform.h>
  
  #ifdef __cplusplus
  extern "C" {
  #endif
  
  #define OPENVG_VERSION_1_0		1
  #define OPENVG_VERSION_1_0_1	1
  #define OPENVG_VERSION_1_1		2
  
  #ifndef VG_MAXSHORT
  #define VG_MAXSHORT 0x7FFF
  #endif
  
  #ifndef VG_MAXINT
  #define VG_MAXINT 0x7FFFFFFF
  #endif
  
  #ifndef VG_MAX_ENUM
  #define VG_MAX_ENUM 0x7FFFFFFF
  #endif
  
  typedef VGuint VGHandle;
  
  typedef VGHandle VGPath;
  typedef VGHandle VGImage;
  typedef VGHandle VGMaskLayer;
  typedef VGHandle VGFont;
  typedef VGHandle VGPaint;
  
  #define VG_INVALID_HANDLE ((VGHandle)0)
  
  typedef enum {
    VG_FALSE               = 0,
    VG_TRUE                = 1,
  
    VG_BOOLEAN_FORCE_SIZE  = VG_MAX_ENUM
  } VGboolean;
  
  typedef enum {
    VG_NO_ERROR                                 = 0,
    VG_BAD_HANDLE_ERROR                         = 0x1000,
    VG_ILLEGAL_ARGUMENT_ERROR                   = 0x1001,
    VG_OUT_OF_MEMORY_ERROR                      = 0x1002,
    VG_PATH_CAPABILITY_ERROR                    = 0x1003,
    VG_UNSUPPORTED_IMAGE_FORMAT_ERROR           = 0x1004,
    VG_UNSUPPORTED_PATH_FORMAT_ERROR            = 0x1005,
    VG_IMAGE_IN_USE_ERROR                       = 0x1006,
    VG_NO_CONTEXT_ERROR                         = 0x1007,
  
    VG_ERROR_CODE_FORCE_SIZE                    = VG_MAX_ENUM
  } VGErrorCode;
  
  typedef enum {
    /* Mode settings */
    VG_MATRIX_MODE                              = 0x1100,
    VG_FILL_RULE                                = 0x1101,
    VG_IMAGE_QUALITY                            = 0x1102,
    VG_RENDERING_QUALITY                        = 0x1103,
    VG_BLEND_MODE                               = 0x1104,
    VG_IMAGE_MODE                               = 0x1105,
  
    /* Scissoring rectangles */
    VG_SCISSOR_RECTS                            = 0x1106,
  
    /* Color Transformation */
    VG_COLOR_TRANSFORM                          = 0x1170,
    VG_COLOR_TRANSFORM_VALUES                   = 0x1171,
  
    /* Stroke parameters */
    VG_STROKE_LINE_WIDTH                        = 0x1110,
    VG_STROKE_CAP_STYLE                         = 0x1111,
    VG_STROKE_JOIN_STYLE                        = 0x1112,
    VG_STROKE_MITER_LIMIT                       = 0x1113,
    VG_STROKE_DASH_PATTERN                      = 0x1114,
    VG_STROKE_DASH_PHASE                        = 0x1115,
    VG_STROKE_DASH_PHASE_RESET                  = 0x1116,
  
    /* Edge fill color for VG_TILE_FILL tiling mode */
    VG_TILE_FILL_COLOR                          = 0x1120,
  
    /* Color for vgClear */
    VG_CLEAR_COLOR                              = 0x1121,
  
    /* Glyph origin */
    VG_GLYPH_ORIGIN                             = 0x1122,
  
    /* Enable/disable alpha masking and scissoring */
    VG_MASKING                                  = 0x1130,
    VG_SCISSORING                               = 0x1131,
  
    /* Pixel layout information */
    VG_PIXEL_LAYOUT                             = 0x1140,
    VG_SCREEN_LAYOUT                            = 0x1141,
  
    /* Source format selection for image filters */
    VG_FILTER_FORMAT_LINEAR                     = 0x1150,
    VG_FILTER_FORMAT_PREMULTIPLIED              = 0x1151,
  
    /* Destination write enable mask for image filters */
    VG_FILTER_CHANNEL_MASK                      = 0x1152,
  
    /* Implementation limits (read-only) */
    VG_MAX_SCISSOR_RECTS                        = 0x1160,
    VG_MAX_DASH_COUNT                           = 0x1161,
    VG_MAX_KERNEL_SIZE                          = 0x1162,
    VG_MAX_SEPARABLE_KERNEL_SIZE                = 0x1163,
    VG_MAX_COLOR_RAMP_STOPS                     = 0x1164,
    VG_MAX_IMAGE_WIDTH                          = 0x1165,
    VG_MAX_IMAGE_HEIGHT                         = 0x1166,
    VG_MAX_IMAGE_PIXELS                         = 0x1167,
    VG_MAX_IMAGE_BYTES                          = 0x1168,
    VG_MAX_FLOAT                                = 0x1169,
    VG_MAX_GAUSSIAN_STD_DEVIATION               = 0x116A,
  
    VG_PARAM_TYPE_FORCE_SIZE                    = VG_MAX_ENUM
  } VGParamType;
  
  typedef enum {
    VG_RENDERING_QUALITY_NONANTIALIASED         = 0x1200,
    VG_RENDERING_QUALITY_FASTER                 = 0x1201,
    VG_RENDERING_QUALITY_BETTER                 = 0x1202, /* Default */
  
    VG_RENDERING_QUALITY_FORCE_SIZE             = VG_MAX_ENUM
  } VGRenderingQuality;
  
  typedef enum {
    VG_PIXEL_LAYOUT_UNKNOWN                     = 0x1300,
    VG_PIXEL_LAYOUT_RGB_VERTICAL                = 0x1301,
    VG_PIXEL_LAYOUT_BGR_VERTICAL                = 0x1302,
    VG_PIXEL_LAYOUT_RGB_HORIZONTAL              = 0x1303,
    VG_PIXEL_LAYOUT_BGR_HORIZONTAL              = 0x1304,
  
    VG_PIXEL_LAYOUT_FORCE_SIZE                  = VG_MAX_ENUM
  } VGPixelLayout;
  
  typedef enum {
    VG_MATRIX_PATH_USER_TO_SURFACE              = 0x1400,
    VG_MATRIX_IMAGE_USER_TO_SURFACE             = 0x1401,
    VG_MATRIX_FILL_PAINT_TO_USER                = 0x1402,
    VG_MATRIX_STROKE_PAINT_TO_USER              = 0x1403,
    VG_MATRIX_GLYPH_USER_TO_SURFACE             = 0x1404,
  
    VG_MATRIX_MODE_FORCE_SIZE                   = VG_MAX_ENUM
  } VGMatrixMode;
  
  typedef enum {
    VG_CLEAR_MASK                               = 0x1500,
    VG_FILL_MASK                                = 0x1501,
    VG_SET_MASK                                 = 0x1502,
    VG_UNION_MASK                               = 0x1503,
    VG_INTERSECT_MASK                           = 0x1504,
    VG_SUBTRACT_MASK                            = 0x1505,
  
    VG_MASK_OPERATION_FORCE_SIZE                = VG_MAX_ENUM
  } VGMaskOperation;
  
  #define VG_PATH_FORMAT_STANDARD 0
  
  typedef enum {
    VG_PATH_DATATYPE_S_8                        =  0,
    VG_PATH_DATATYPE_S_16                       =  1,
    VG_PATH_DATATYPE_S_32                       =  2,
    VG_PATH_DATATYPE_F                          =  3,
  
    VG_PATH_DATATYPE_FORCE_SIZE                 = VG_MAX_ENUM
  } VGPathDatatype;
  
  typedef enum {
    VG_ABSOLUTE                                 = 0,
    VG_RELATIVE                                 = 1,
  
    VG_PATH_ABS_REL_FORCE_SIZE                  = VG_MAX_ENUM
  } VGPathAbsRel;
  
  typedef enum {
    VG_CLOSE_PATH                               = ( 0 << 1),
    VG_MOVE_TO                                  = ( 1 << 1),
    VG_LINE_TO                                  = ( 2 << 1),
    VG_HLINE_TO                                 = ( 3 << 1),
    VG_VLINE_TO                                 = ( 4 << 1),
    VG_QUAD_TO                                  = ( 5 << 1),
    VG_CUBIC_TO                                 = ( 6 << 1),
    VG_SQUAD_TO                                 = ( 7 << 1),
    VG_SCUBIC_TO                                = ( 8 << 1),
    VG_SCCWARC_TO                               = ( 9 << 1),
    VG_SCWARC_TO                                = (10 << 1),
    VG_LCCWARC_TO                               = (11 << 1),
    VG_LCWARC_TO                                = (12 << 1),
  
    VG_PATH_SEGMENT_FORCE_SIZE                  = VG_MAX_ENUM
  } VGPathSegment;
  
  typedef enum {
    VG_MOVE_TO_ABS                              = VG_MOVE_TO    | VG_ABSOLUTE,
    VG_MOVE_TO_REL                              = VG_MOVE_TO    | VG_RELATIVE,
    VG_LINE_TO_ABS                              = VG_LINE_TO    | VG_ABSOLUTE,
    VG_LINE_TO_REL                              = VG_LINE_TO    | VG_RELATIVE,
    VG_HLINE_TO_ABS                             = VG_HLINE_TO   | VG_ABSOLUTE,
    VG_HLINE_TO_REL                             = VG_HLINE_TO   | VG_RELATIVE,
    VG_VLINE_TO_ABS                             = VG_VLINE_TO   | VG_ABSOLUTE,
    VG_VLINE_TO_REL                             = VG_VLINE_TO   | VG_RELATIVE,
    VG_QUAD_TO_ABS                              = VG_QUAD_TO    | VG_ABSOLUTE,
    VG_QUAD_TO_REL                              = VG_QUAD_TO    | VG_RELATIVE,
    VG_CUBIC_TO_ABS                             = VG_CUBIC_TO   | VG_ABSOLUTE,
    VG_CUBIC_TO_REL                             = VG_CUBIC_TO   | VG_RELATIVE,
    VG_SQUAD_TO_ABS                             = VG_SQUAD_TO   | VG_ABSOLUTE,
    VG_SQUAD_TO_REL                             = VG_SQUAD_TO   | VG_RELATIVE,
    VG_SCUBIC_TO_ABS                            = VG_SCUBIC_TO  | VG_ABSOLUTE,
    VG_SCUBIC_TO_REL                            = VG_SCUBIC_TO  | VG_RELATIVE,
    VG_SCCWARC_TO_ABS                           = VG_SCCWARC_TO | VG_ABSOLUTE,
    VG_SCCWARC_TO_REL                           = VG_SCCWARC_TO | VG_RELATIVE,
    VG_SCWARC_TO_ABS                            = VG_SCWARC_TO  | VG_ABSOLUTE,
    VG_SCWARC_TO_REL                            = VG_SCWARC_TO  | VG_RELATIVE,
    VG_LCCWARC_TO_ABS                           = VG_LCCWARC_TO | VG_ABSOLUTE,
    VG_LCCWARC_TO_REL                           = VG_LCCWARC_TO | VG_RELATIVE,
    VG_LCWARC_TO_ABS                            = VG_LCWARC_TO  | VG_ABSOLUTE,
    VG_LCWARC_TO_REL                            = VG_LCWARC_TO  | VG_RELATIVE,
  
    VG_PATH_COMMAND_FORCE_SIZE                  = VG_MAX_ENUM
  } VGPathCommand;
  
  typedef enum {
    VG_PATH_CAPABILITY_APPEND_FROM              = (1 <<  0),
    VG_PATH_CAPABILITY_APPEND_TO                = (1 <<  1),
    VG_PATH_CAPABILITY_MODIFY                   = (1 <<  2),
    VG_PATH_CAPABILITY_TRANSFORM_FROM           = (1 <<  3),
    VG_PATH_CAPABILITY_TRANSFORM_TO             = (1 <<  4),
    VG_PATH_CAPABILITY_INTERPOLATE_FROM         = (1 <<  5),
    VG_PATH_CAPABILITY_INTERPOLATE_TO           = (1 <<  6),
    VG_PATH_CAPABILITY_PATH_LENGTH              = (1 <<  7),
    VG_PATH_CAPABILITY_POINT_ALONG_PATH         = (1 <<  8),
    VG_PATH_CAPABILITY_TANGENT_ALONG_PATH       = (1 <<  9),
    VG_PATH_CAPABILITY_PATH_BOUNDS              = (1 << 10),
    VG_PATH_CAPABILITY_PATH_TRANSFORMED_BOUNDS  = (1 << 11),
    VG_PATH_CAPABILITY_ALL                      = (1 << 12) - 1,
  
    VG_PATH_CAPABILITIES_FORCE_SIZE             = VG_MAX_ENUM
  } VGPathCapabilities;
  
  typedef enum {
    VG_PATH_FORMAT                              = 0x1600,
    VG_PATH_DATATYPE                            = 0x1601,
    VG_PATH_SCALE                               = 0x1602,
    VG_PATH_BIAS                                = 0x1603,
    VG_PATH_NUM_SEGMENTS                        = 0x1604,
    VG_PATH_NUM_COORDS                          = 0x1605,
  
    VG_PATH_PARAM_TYPE_FORCE_SIZE               = VG_MAX_ENUM
  } VGPathParamType;
  
  typedef enum {
    VG_CAP_BUTT                                 = 0x1700,
    VG_CAP_ROUND                                = 0x1701,
    VG_CAP_SQUARE                               = 0x1702,
  
    VG_CAP_STYLE_FORCE_SIZE                     = VG_MAX_ENUM
  } VGCapStyle;
  
  typedef enum {
    VG_JOIN_MITER                               = 0x1800,
    VG_JOIN_ROUND                               = 0x1801,
    VG_JOIN_BEVEL                               = 0x1802,
  
    VG_JOIN_STYLE_FORCE_SIZE                    = VG_MAX_ENUM
  } VGJoinStyle;
  
  typedef enum {
    VG_EVEN_ODD                                 = 0x1900,
    VG_NON_ZERO                                 = 0x1901,
  
    VG_FILL_RULE_FORCE_SIZE                     = VG_MAX_ENUM
  } VGFillRule;
  
  typedef enum {
    VG_STROKE_PATH                              = (1 << 0),
    VG_FILL_PATH                                = (1 << 1),
  
    VG_PAINT_MODE_FORCE_SIZE                    = VG_MAX_ENUM
  } VGPaintMode;
  
  typedef enum {
    /* Color paint parameters */
    VG_PAINT_TYPE                               = 0x1A00,
    VG_PAINT_COLOR                              = 0x1A01,
    VG_PAINT_COLOR_RAMP_SPREAD_MODE             = 0x1A02,
    VG_PAINT_COLOR_RAMP_PREMULTIPLIED           = 0x1A07,
    VG_PAINT_COLOR_RAMP_STOPS                   = 0x1A03,
  
    /* Linear gradient paint parameters */
    VG_PAINT_LINEAR_GRADIENT                    = 0x1A04,
  
    /* Radial gradient paint parameters */
    VG_PAINT_RADIAL_GRADIENT                    = 0x1A05,
  
    /* Pattern paint parameters */
    VG_PAINT_PATTERN_TILING_MODE                = 0x1A06,
  
    VG_PAINT_PARAM_TYPE_FORCE_SIZE              = VG_MAX_ENUM
  } VGPaintParamType;
  
  typedef enum {
    VG_PAINT_TYPE_COLOR                         = 0x1B00,
    VG_PAINT_TYPE_LINEAR_GRADIENT               = 0x1B01,
    VG_PAINT_TYPE_RADIAL_GRADIENT               = 0x1B02,
    VG_PAINT_TYPE_PATTERN                       = 0x1B03,
  
    VG_PAINT_TYPE_FORCE_SIZE                    = VG_MAX_ENUM
  } VGPaintType;
  
  typedef enum {
    VG_COLOR_RAMP_SPREAD_PAD                    = 0x1C00,
    VG_COLOR_RAMP_SPREAD_REPEAT                 = 0x1C01,
    VG_COLOR_RAMP_SPREAD_REFLECT                = 0x1C02,
  
    VG_COLOR_RAMP_SPREAD_MODE_FORCE_SIZE        = VG_MAX_ENUM
  } VGColorRampSpreadMode;
  
  typedef enum {
    VG_TILE_FILL                                = 0x1D00,
    VG_TILE_PAD                                 = 0x1D01,
    VG_TILE_REPEAT                              = 0x1D02,
    VG_TILE_REFLECT                             = 0x1D03,
  
    VG_TILING_MODE_FORCE_SIZE                   = VG_MAX_ENUM
  } VGTilingMode;
  
  typedef enum {
    /* RGB{A,X} channel ordering */
    VG_sRGBX_8888                               =  0,
    VG_sRGBA_8888                               =  1,
    VG_sRGBA_8888_PRE                           =  2,
    VG_sRGB_565                                 =  3,
    VG_sRGBA_5551                               =  4,
    VG_sRGBA_4444                               =  5,
    VG_sL_8                                     =  6,
    VG_lRGBX_8888                               =  7,
    VG_lRGBA_8888                               =  8,
    VG_lRGBA_8888_PRE                           =  9,
    VG_lL_8                                     = 10,
    VG_A_8                                      = 11,
    VG_BW_1                                     = 12,
    VG_A_1                                      = 13,
    VG_A_4                                      = 14,
  
    /* {A,X}RGB channel ordering */
    VG_sXRGB_8888                               =  0 | (1 << 6),
    VG_sARGB_8888                               =  1 | (1 << 6),
    VG_sARGB_8888_PRE                           =  2 | (1 << 6),
    VG_sARGB_1555                               =  4 | (1 << 6),
    VG_sARGB_4444                               =  5 | (1 << 6),
    VG_lXRGB_8888                               =  7 | (1 << 6),
    VG_lARGB_8888                               =  8 | (1 << 6),
    VG_lARGB_8888_PRE                           =  9 | (1 << 6),
  
    /* BGR{A,X} channel ordering */
    VG_sBGRX_8888                               =  0 | (1 << 7),
    VG_sBGRA_8888                               =  1 | (1 << 7),
    VG_sBGRA_8888_PRE                           =  2 | (1 << 7),
    VG_sBGR_565                                 =  3 | (1 << 7),
    VG_sBGRA_5551                               =  4 | (1 << 7),
    VG_sBGRA_4444                               =  5 | (1 << 7),
    VG_lBGRX_8888                               =  7 | (1 << 7),
    VG_lBGRA_8888                               =  8 | (1 << 7),
    VG_lBGRA_8888_PRE                           =  9 | (1 << 7),
  
    /* {A,X}BGR channel ordering */
    VG_sXBGR_8888                               =  0 | (1 << 6) | (1 << 7),
    VG_sABGR_8888                               =  1 | (1 << 6) | (1 << 7),
    VG_sABGR_8888_PRE                           =  2 | (1 << 6) | (1 << 7),
    VG_sABGR_1555                               =  4 | (1 << 6) | (1 << 7),
    VG_sABGR_4444                               =  5 | (1 << 6) | (1 << 7),
    VG_lXBGR_8888                               =  7 | (1 << 6) | (1 << 7),
    VG_lABGR_8888                               =  8 | (1 << 6) | (1 << 7),
    VG_lABGR_8888_PRE                           =  9 | (1 << 6) | (1 << 7),
  
    VG_IMAGE_FORMAT_FORCE_SIZE                  = VG_MAX_ENUM
  } VGImageFormat;
  
  typedef enum {
    VG_IMAGE_QUALITY_NONANTIALIASED             = (1 << 0),
    VG_IMAGE_QUALITY_FASTER                     = (1 << 1),
    VG_IMAGE_QUALITY_BETTER                     = (1 << 2),
  
    VG_IMAGE_QUALITY_FORCE_SIZE                 = VG_MAX_ENUM
  } VGImageQuality;
  
  typedef enum {
    VG_IMAGE_FORMAT                             = 0x1E00,
    VG_IMAGE_WIDTH                              = 0x1E01,
    VG_IMAGE_HEIGHT                             = 0x1E02,
  
    VG_IMAGE_PARAM_TYPE_FORCE_SIZE              = VG_MAX_ENUM
  } VGImageParamType;
  
  typedef enum {
    VG_DRAW_IMAGE_NORMAL                        = 0x1F00,
    VG_DRAW_IMAGE_MULTIPLY                      = 0x1F01,
    VG_DRAW_IMAGE_STENCIL                       = 0x1F02,
  
    VG_IMAGE_MODE_FORCE_SIZE                    = VG_MAX_ENUM
  } VGImageMode;
  
  typedef enum {
    VG_RED                                      = (1 << 3),
    VG_GREEN                                    = (1 << 2),
    VG_BLUE                                     = (1 << 1),
    VG_ALPHA                                    = (1 << 0),
  
    VG_IMAGE_CHANNEL_FORCE_SIZE                 = VG_MAX_ENUM
  } VGImageChannel;
  
  typedef enum {
    VG_BLEND_SRC                                = 0x2000,
    VG_BLEND_SRC_OVER                           = 0x2001,
    VG_BLEND_DST_OVER                           = 0x2002,
    VG_BLEND_SRC_IN                             = 0x2003,
    VG_BLEND_DST_IN                             = 0x2004,
    VG_BLEND_MULTIPLY                           = 0x2005,
    VG_BLEND_SCREEN                             = 0x2006,
    VG_BLEND_DARKEN                             = 0x2007,
    VG_BLEND_LIGHTEN                            = 0x2008,
    VG_BLEND_ADDITIVE                           = 0x2009,
  
    VG_BLEND_MODE_FORCE_SIZE                    = VG_MAX_ENUM
  } VGBlendMode;
  
  typedef enum {
    VG_FONT_NUM_GLYPHS                          = 0x2F00,
  
    VG_FONT_PARAM_TYPE_FORCE_SIZE               = VG_MAX_ENUM
  } VGFontParamType;
  
  typedef enum {
    VG_IMAGE_FORMAT_QUERY                       = 0x2100,
    VG_PATH_DATATYPE_QUERY                      = 0x2101,
  
    VG_HARDWARE_QUERY_TYPE_FORCE_SIZE           = VG_MAX_ENUM
  } VGHardwareQueryType;
  
  typedef enum {
    VG_HARDWARE_ACCELERATED                     = 0x2200,
    VG_HARDWARE_UNACCELERATED                   = 0x2201,
  
    VG_HARDWARE_QUERY_RESULT_FORCE_SIZE         = VG_MAX_ENUM
  } VGHardwareQueryResult;
  
  typedef enum {
    VG_VENDOR                                   = 0x2300,
    VG_RENDERER                                 = 0x2301,
    VG_VERSION                                  = 0x2302,
    VG_EXTENSIONS                               = 0x2303,
  
    VG_STRING_ID_FORCE_SIZE                     = VG_MAX_ENUM
  } VGStringID;
  
  /* Function Prototypes */
  
  #ifndef VG_API_CALL
  #	error VG_API_CALL must be defined
  #endif
  
  #ifndef VG_API_ENTRY
  #   error VG_API_ENTRY must be defined 
  #endif
  
  #ifndef VG_API_EXIT
  #   error VG_API_EXIT must be defined 
  #endif
  
  VG_API_CALL VGErrorCode VG_API_ENTRY vgGetError(void) VG_API_EXIT;
  
  VG_API_CALL void VG_API_ENTRY vgFlush(void) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgFinish(void) VG_API_EXIT;
  
  /* Getters and Setters */
  VG_API_CALL void VG_API_ENTRY vgSetf (VGParamType type, VGfloat value) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgSeti (VGParamType type, VGint value) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgSetfv(VGParamType type, VGint count,
                           const VGfloat * values) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgSetiv(VGParamType type, VGint count,
                           const VGint * values) VG_API_EXIT;
  
  VG_API_CALL VGfloat VG_API_ENTRY vgGetf(VGParamType type) VG_API_EXIT;
  VG_API_CALL VGint VG_API_ENTRY vgGeti(VGParamType type) VG_API_EXIT;
  VG_API_CALL VGint VG_API_ENTRY vgGetVectorSize(VGParamType type) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgGetfv(VGParamType type, VGint count, VGfloat * values) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgGetiv(VGParamType type, VGint count, VGint * values) VG_API_EXIT;
  
  VG_API_CALL void VG_API_ENTRY vgSetParameterf(VGHandle object,
                                   VGint paramType,
                                   VGfloat value) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgSetParameteri(VGHandle object,
                                   VGint paramType,
                                   VGint value) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgSetParameterfv(VGHandle object,
                                    VGint paramType,
                                    VGint count, const VGfloat * values) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgSetParameteriv(VGHandle object,
                                    VGint paramType,
                                    VGint count, const VGint * values) VG_API_EXIT;
  
  VG_API_CALL VGfloat VG_API_ENTRY vgGetParameterf(VGHandle object,
                                      VGint paramType) VG_API_EXIT;
  VG_API_CALL VGint VG_API_ENTRY vgGetParameteri(VGHandle object,
                                    VGint paramType);
  VG_API_CALL VGint VG_API_ENTRY vgGetParameterVectorSize(VGHandle object,
                                             VGint paramType) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgGetParameterfv(VGHandle object,
                                    VGint paramType,
                                    VGint count, VGfloat * values) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgGetParameteriv(VGHandle object,
                                    VGint paramType,
                                    VGint count, VGint * values) VG_API_EXIT;
  
  /* Matrix Manipulation */
  VG_API_CALL void VG_API_ENTRY vgLoadIdentity(void) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgLoadMatrix(const VGfloat * m) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgGetMatrix(VGfloat * m) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgMultMatrix(const VGfloat * m) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgTranslate(VGfloat tx, VGfloat ty) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgScale(VGfloat sx, VGfloat sy) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgShear(VGfloat shx, VGfloat shy) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgRotate(VGfloat angle) VG_API_EXIT;
  
  /* Masking and Clearing */
  VG_API_CALL void VG_API_ENTRY vgMask(VGHandle mask, VGMaskOperation operation,
                                       VGint x, VGint y,
                                       VGint width, VGint height) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgRenderToMask(VGPath path,
                                              VGbitfield paintModes,
                                              VGMaskOperation operation) VG_API_EXIT;
  VG_API_CALL VGMaskLayer VG_API_ENTRY vgCreateMaskLayer(VGint width, VGint height) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgDestroyMaskLayer(VGMaskLayer maskLayer) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgFillMaskLayer(VGMaskLayer maskLayer,
                                               VGint x, VGint y,
                                               VGint width, VGint height,
                                               VGfloat value) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgCopyMask(VGMaskLayer maskLayer,
                                          VGint dx, VGint dy,
                                          VGint sx, VGint sy,
                                          VGint width, VGint height) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgClear(VGint x, VGint y, VGint width, VGint height) VG_API_EXIT;
  
  /* Paths */
  VG_API_CALL VGPath VG_API_ENTRY vgCreatePath(VGint pathFormat,
                                  VGPathDatatype datatype,
                                  VGfloat scale, VGfloat bias,
                                  VGint segmentCapacityHint,
                                  VGint coordCapacityHint,
                                  VGbitfield capabilities) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgClearPath(VGPath path, VGbitfield capabilities) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgDestroyPath(VGPath path) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgRemovePathCapabilities(VGPath path,
                                            VGbitfield capabilities) VG_API_EXIT;
  VG_API_CALL VGbitfield VG_API_ENTRY vgGetPathCapabilities(VGPath path) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgAppendPath(VGPath dstPath, VGPath srcPath) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgAppendPathData(VGPath dstPath,
                                    VGint numSegments,
                                    const VGubyte * pathSegments,
                                    const void * pathData) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgModifyPathCoords(VGPath dstPath, VGint startIndex,
                                      VGint numSegments,
                                      const void * pathData) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgTransformPath(VGPath dstPath, VGPath srcPath) VG_API_EXIT;
  VG_API_CALL VGboolean VG_API_ENTRY vgInterpolatePath(VGPath dstPath,
                                          VGPath startPath,
                                          VGPath endPath,
                                          VGfloat amount) VG_API_EXIT;
  VG_API_CALL VGfloat VG_API_ENTRY vgPathLength(VGPath path,
                                   VGint startSegment, VGint numSegments) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgPointAlongPath(VGPath path,
                                    VGint startSegment, VGint numSegments,
                                    VGfloat distance,
                                    VGfloat * x, VGfloat * y,
                                    VGfloat * tangentX, VGfloat * tangentY) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgPathBounds(VGPath path,
                                VGfloat * minX, VGfloat * minY,
                                VGfloat * width, VGfloat * height) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgPathTransformedBounds(VGPath path,
                                           VGfloat * minX, VGfloat * minY,
                                           VGfloat * width, VGfloat * height) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgDrawPath(VGPath path, VGbitfield paintModes) VG_API_EXIT;
  
  /* Paint */
  VG_API_CALL VGPaint VG_API_ENTRY vgCreatePaint(void) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgDestroyPaint(VGPaint paint) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgSetPaint(VGPaint paint, VGbitfield paintModes) VG_API_EXIT;
  VG_API_CALL VGPaint VG_API_ENTRY vgGetPaint(VGPaintMode paintMode) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgSetColor(VGPaint paint, VGuint rgba) VG_API_EXIT;
  VG_API_CALL VGuint VG_API_ENTRY vgGetColor(VGPaint paint) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgPaintPattern(VGPaint paint, VGImage pattern) VG_API_EXIT;
  
  /* Images */
  VG_API_CALL VGImage VG_API_ENTRY vgCreateImage(VGImageFormat format,
                                    VGint width, VGint height,
                                    VGbitfield allowedQuality) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgDestroyImage(VGImage image) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgClearImage(VGImage image,
                                VGint x, VGint y, VGint width, VGint height) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgImageSubData(VGImage image,
                                  const void * data, VGint dataStride,
                                  VGImageFormat dataFormat,
                                  VGint x, VGint y, VGint width, VGint height) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgGetImageSubData(VGImage image,
                                     void * data, VGint dataStride,
                                     VGImageFormat dataFormat,
                                     VGint x, VGint y,
                                     VGint width, VGint height) VG_API_EXIT;
  VG_API_CALL VGImage VG_API_ENTRY vgChildImage(VGImage parent,
                                   VGint x, VGint y, VGint width, VGint height) VG_API_EXIT;
  VG_API_CALL VGImage VG_API_ENTRY vgGetParent(VGImage image) VG_API_EXIT; 
  VG_API_CALL void VG_API_ENTRY vgCopyImage(VGImage dst, VGint dx, VGint dy,
                               VGImage src, VGint sx, VGint sy,
                               VGint width, VGint height,
                               VGboolean dither) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgDrawImage(VGImage image) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgSetPixels(VGint dx, VGint dy,
                               VGImage src, VGint sx, VGint sy,
                               VGint width, VGint height) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgWritePixels(const void * data, VGint dataStride,
                                 VGImageFormat dataFormat,
                                 VGint dx, VGint dy,
                                 VGint width, VGint height) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgGetPixels(VGImage dst, VGint dx, VGint dy,
                               VGint sx, VGint sy,
                               VGint width, VGint height) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgReadPixels(void * data, VGint dataStride,
                                VGImageFormat dataFormat,
                                VGint sx, VGint sy,
                                VGint width, VGint height) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgCopyPixels(VGint dx, VGint dy,
                                VGint sx, VGint sy,
                                VGint width, VGint height) VG_API_EXIT;
  
  /* Text */
  VG_API_CALL VGFont VG_API_ENTRY vgCreateFont(VGint glyphCapacityHint) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgDestroyFont(VGFont font) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgSetGlyphToPath(VGFont font,
                                                VGuint glyphIndex,
                                                VGPath path,
                                                VGboolean isHinted,
                                                const VGfloat glyphOrigin [2],
                                                const VGfloat escapement[2]) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgSetGlyphToImage(VGFont font,
                                                 VGuint glyphIndex,
                                                 VGImage image,
                                                 const VGfloat glyphOrigin [2],
                                                 const VGfloat escapement[2]) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgClearGlyph(VGFont font,VGuint glyphIndex) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgDrawGlyph(VGFont font, 
                                           VGuint glyphIndex,
                                           VGbitfield paintModes,
                                           VGboolean allowAutoHinting) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgDrawGlyphs(VGFont font,
                                            VGint glyphCount,
                                            const VGuint *glyphIndices,
                                            const VGfloat *adjustments_x,
                                            const VGfloat *adjustments_y,
                                            VGbitfield paintModes,
                                            VGboolean allowAutoHinting) VG_API_EXIT;
  
  /* Image Filters */
  VG_API_CALL void VG_API_ENTRY vgColorMatrix(VGImage dst, VGImage src,
                                 const VGfloat * matrix) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgConvolve(VGImage dst, VGImage src,
                              VGint kernelWidth, VGint kernelHeight,
                              VGint shiftX, VGint shiftY,
                              const VGshort * kernel,
                              VGfloat scale,
                              VGfloat bias,
                              VGTilingMode tilingMode) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgSeparableConvolve(VGImage dst, VGImage src,
                                       VGint kernelWidth,
                                       VGint kernelHeight,
                                       VGint shiftX, VGint shiftY,
                                       const VGshort * kernelX,
                                       const VGshort * kernelY,
                                       VGfloat scale,
                                       VGfloat bias,
                                       VGTilingMode tilingMode) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgGaussianBlur(VGImage dst, VGImage src,
                                  VGfloat stdDeviationX,
                                  VGfloat stdDeviationY,
                                  VGTilingMode tilingMode) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgLookup(VGImage dst, VGImage src,
                            const VGubyte * redLUT,
                            const VGubyte * greenLUT,
                            const VGubyte * blueLUT,
                            const VGubyte * alphaLUT,
                            VGboolean outputLinear,
                            VGboolean outputPremultiplied) VG_API_EXIT;
  VG_API_CALL void VG_API_ENTRY vgLookupSingle(VGImage dst, VGImage src,
                                  const VGuint * lookupTable,
                                  VGImageChannel sourceChannel,
                                  VGboolean outputLinear,
                                  VGboolean outputPremultiplied) VG_API_EXIT;
  
  /* Hardware Queries */
  VG_API_CALL VGHardwareQueryResult VG_API_ENTRY vgHardwareQuery(VGHardwareQueryType key,
                                                    VGint setting) VG_API_EXIT;
  
  /* Renderer and Extension Information */
  VG_API_CALL const VGubyte * VG_API_ENTRY vgGetString(VGStringID name) VG_API_EXIT;
  
  /* Extend API */
  VG_API_CALL void VG_API_ENTRY vgM2dAlphaBlend(
  	VGImage           image,
  	VGint             x, 
  	VGint             y, 
  	VGint             width, 
  	VGint             height,
  	VGImage           srcimage,
  	VGint             srcx, 
  	VGint             srcy,
  	VGBlendMode       blendMode,
      VGint			  srcConstAlpha);
  
  VG_API_CALL void VG_API_ENTRY vgM2dTransferBlock(
  	VGint   x, 
  	VGint   y, 
  	VGint   width, 
  	VGint   height,
  	VGImage srcimage,
  	VGint   srcx, 
  	VGint   srcy,
  	VGint   rop);
  
  VG_API_CALL void VG_API_ENTRY vgM2dSourceCopy(
  	VGint   x, 
  	VGint   y, 
  	VGint   width, 
  	VGint   height,
  	VGImage srcimage,
  	VGint   srcx, 
  	VGint   srcy);
  
  VG_API_CALL void VG_API_ENTRY vgM2dDrawTransparentblock(
  	VGImage           image,
  	VGint             x, 
  	VGint             y, 
  	VGint             width, 
  	VGint             height,
  	VGImage           srcimage,
  	VGint             srcx, 
  	VGint             srcy,
  	VGuint		      destHighColor,
  	VGuint		      destLowColor,
  	VGuint		      srcHighColor,
  	VGuint		      srcLowColor,
  	VGint		      transparentRop);
  
  
  
  #ifdef __cplusplus 
  } /* extern "C" */
  #endif
  
  #endif /* _OPENVG_H */
  