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Resample RGB images in C++#29453

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Remove unused fixed_blender_rgba_pre
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@QuLogic
QuLogic committedJan 10, 2025
commit2aca299ff929b7562b0faf10cef710ec87e19f8c
40 changes: 0 additions & 40 deletionssrc/agg_workaround.h
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Original file line numberDiff line numberDiff line change
Expand Up@@ -8,46 +8,6 @@
blending of RGBA32 pixels does not preserve enough precision
*/

template<class ColorT, class Order>
struct fixed_blender_rgba_pre : agg::conv_rgba_pre<ColorT, Order>
{
typedef ColorT color_type;
typedef Order order_type;
typedef typename color_type::value_type value_type;
typedef typename color_type::calc_type calc_type;
typedef typename color_type::long_type long_type;
enum base_scale_e
{
base_shift = color_type::base_shift,
base_mask = color_type::base_mask
};

//--------------------------------------------------------------------
static AGG_INLINE void blend_pix(value_type* p,
value_type cr, value_type cg, value_type cb,
value_type alpha, agg::cover_type cover)
{
blend_pix(p,
color_type::mult_cover(cr, cover),
color_type::mult_cover(cg, cover),
color_type::mult_cover(cb, cover),
color_type::mult_cover(alpha, cover));
}

//--------------------------------------------------------------------
static AGG_INLINE void blend_pix(value_type* p,
value_type cr, value_type cg, value_type cb,
value_type alpha)
{
alpha = base_mask - alpha;
p[Order::R] = (value_type)(((p[Order::R] * alpha) >> base_shift) + cr);
p[Order::G] = (value_type)(((p[Order::G] * alpha) >> base_shift) + cg);
p[Order::B] = (value_type)(((p[Order::B] * alpha) >> base_shift) + cb);
p[Order::A] = (value_type)(base_mask - ((alpha * (base_mask - p[Order::A])) >> base_shift));
}
};


template<class ColorT, class Order>
struct fixed_blender_rgba_plain : agg::conv_rgba_plain<ColorT, Order>
{
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