mapnik/agg/include/agg_config.h

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#ifndef AGG_CONFIG_INCLUDED
#define AGG_CONFIG_INCLUDED
// This file can be used to redefine certain data types.
//---------------------------------------
// 1. Default basic types such as:
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//
// AGG_INT8
// AGG_INT8U
// AGG_INT16
// AGG_INT16U
// AGG_INT32
// AGG_INT32U
// AGG_INT64
// AGG_INT64U
//
// Just replace this file with new defines if necessary.
// For example, if your compiler doesn't have a 64 bit integer type
// you can still use AGG if you define the follows:
//
// #define AGG_INT64 int
// #define AGG_INT64U unsigned
//
// It will result in overflow in 16 bit-per-component image/pattern resampling
// but it won't result any crash and the rest of the library will remain
// fully functional.
//---------------------------------------
// 2. Default rendering_buffer type. Can be:
//
// Provides faster access for massive pixel operations,
// such as blur, image filtering:
// #define AGG_RENDERING_BUFFER row_ptr_cache<int8u>
//
// Provides cheaper creation and destruction (no mem allocs):
#define AGG_RENDERING_BUFFER row_accessor<int8u>
//
// You can still use both of them simultaneouslyin your applications
// This #define is used only for default rendering_buffer type,
// in short hand typedefs like pixfmt_rgba32.
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#endif