rgraves
/
freetype2
forked from minhngoc25a/freetype2
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

* src/sdf/ftsdfcommon.h (*): Fix line endings. 

Always use LF line endings.
This commit is contained in:
Anuj Verma 2020-07-30 17:13:09 +05:30 committed by anujverma
parent f2553d89b2
commit dcdcc65201
2 changed files with 128 additions and 122 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
[GSoC]ChangeLog
View File

@ -1,3 +1,9 @@
2020-07-30 Anuj Verma <anujv@iitbhilai.ac.in>
* src/sdf/ftsdfcommon.h (*): Fix line endings.
Always use LF line endings.
2020-07-30 Anuj Verma <anujv@iitbhilai.ac.in> 2020-07-30 Anuj Verma <anujv@iitbhilai.ac.in>
[sdf,bsdf] Put common propertied and functions in one file. [sdf,bsdf] Put common propertied and functions in one file.

244
src/sdf/ftsdfcommon.h
View File

@ -1,122 +1,122 @@
/**************************************************** /****************************************************
* *
* This file contain common function and properties * This file contain common function and properties
* for both `sdf' and `bsdf' renderer. * for both `sdf' and `bsdf' renderer.
* *
*/ */
#ifndef FTSDFCOMMON_H_ #ifndef FTSDFCOMMON_H_
#define FTSDFCOMMON_H_ #define FTSDFCOMMON_H_
#include <ft2build.h> #include <ft2build.h>
#include FT_CONFIG_CONFIG_H #include FT_CONFIG_CONFIG_H
#include <freetype/freetype.h> #include <freetype/freetype.h>
FT_BEGIN_HEADER FT_BEGIN_HEADER
/************************************************************************** /**************************************************************************
* *
* default values (cannot be set individually for each renderer) * default values (cannot be set individually for each renderer)
* *
*/ */
/* default spread value */ /* default spread value */
#define DEFAULT_SPREAD 8 #define DEFAULT_SPREAD 8
/* minimum spread supported by the renderer. */ /* minimum spread supported by the renderer. */
#define MIN_SPREAD 2 #define MIN_SPREAD 2
/* maximum spread supported by the renderer. */ /* maximum spread supported by the renderer. */
#define MAX_SPREAD 32 #define MAX_SPREAD 32
/************************************************************************** /**************************************************************************
* *
* common definitions (cannot be set individually for each renderer) * common definitions (cannot be set individually for each renderer)
* *
*/ */
/* If it is defined to 1 then the rasterizer will use squared distances */ /* If it is defined to 1 then the rasterizer will use squared distances */
/* for computation. It can greatly improve the performance but there is */ /* for computation. It can greatly improve the performance but there is */
/* a chance of overflow and artifacts. You can safely use it upto a */ /* a chance of overflow and artifacts. You can safely use it upto a */
/* pixel size of 128. */ /* pixel size of 128. */
#ifndef USE_SQUARED_DISTANCES #ifndef USE_SQUARED_DISTANCES
# define USE_SQUARED_DISTANCES 0 # define USE_SQUARED_DISTANCES 0
#endif #endif
/************************************************************************** /**************************************************************************
* *
* common macros * common macros
* *
*/ */
/* convert int to 26.6 fixed point */ /* convert int to 26.6 fixed point */
#define FT_INT_26D6( x ) ( x * 64 ) #define FT_INT_26D6( x ) ( x * 64 )
/* convert int to 16.16 fixed point */ /* convert int to 16.16 fixed point */
#define FT_INT_16D16( x ) ( x * 65536 ) #define FT_INT_16D16( x ) ( x * 65536 )
/* convert 26.6 to 16.16 fixed point */ /* convert 26.6 to 16.16 fixed point */
#define FT_26D6_16D16( x ) ( x * 1024 ) #define FT_26D6_16D16( x ) ( x * 1024 )
/* Convenient macro which calls the function */ /* Convenient macro which calls the function */
/* and returns if any error occurs. */ /* and returns if any error occurs. */
#define FT_CALL( x ) do \ #define FT_CALL( x ) do \
{ \ { \
error = ( x ); \ error = ( x ); \
if ( error != FT_Err_Ok ) \ if ( error != FT_Err_Ok ) \
goto Exit; \ goto Exit; \
} while ( 0 ) } while ( 0 )
/************************************************************************** /**************************************************************************
* *
* common typedefs * common typedefs
* *
*/ */
typedef FT_Vector FT_26D6_Vec; /* with 26.6 fixed point components */ typedef FT_Vector FT_26D6_Vec; /* with 26.6 fixed point components */
typedef FT_Vector FT_16D16_Vec; /* with 16.16 fixed point components */ typedef FT_Vector FT_16D16_Vec; /* with 16.16 fixed point components */
typedef FT_Fixed FT_16D16; /* 16.16 fixed point representation */ typedef FT_Fixed FT_16D16; /* 16.16 fixed point representation */
typedef FT_Fixed FT_26D6; /* 26.6 fixed point representation */ typedef FT_Fixed FT_26D6; /* 26.6 fixed point representation */
typedef FT_Short FT_6D10; /* 6.10 fixed point representation */ typedef FT_Short FT_6D10; /* 6.10 fixed point representation */
typedef FT_BBox FT_CBox; /* control box of a curve */ typedef FT_BBox FT_CBox; /* control box of a curve */
/************************************************************************** /**************************************************************************
* *
* common functions * common functions
* *
*/ */
/* Original Algorithm: https://github.com/chmike/fpsqrt */ /* Original Algorithm: https://github.com/chmike/fpsqrt */
static FT_16D16 static FT_16D16
square_root( FT_16D16 val ) square_root( FT_16D16 val )
{ {
FT_ULong t, q, b, r; FT_ULong t, q, b, r;
r = val; r = val;
b = 0x40000000; b = 0x40000000;
q = 0; q = 0;
while( b > 0x40 ) while( b > 0x40 )
{ {
t = q + b; t = q + b;
if( r >= t ) if( r >= t )
{ {
r -= t; r -= t;
q = t + b; q = t + b;
} }
r <<= 1; r <<= 1;
b >>= 1; b >>= 1;
} }
q >>= 8; q >>= 8;
return q; return q;
} }
FT_END_HEADER FT_END_HEADER
#endif /* FTSDFCOMMON_H_ */ #endif /* FTSDFCOMMON_H_ */
/* END */ /* END */