void composite(T1 & im, T2 & im2, composite_mode_e mode,
float opacity,
int dx,
int dy,
bool premultiply_src,
bool premultiply_dst)
{
typedef agg::rgba8 color;
typedef agg::order_rgba order;
typedef agg::pixel32_type pixel_type;
typedef agg::comp_op_adaptor_rgba<color, order> blender_type;
typedef agg::pixfmt_custom_blend_rgba<blender_type, agg::rendering_buffer> pixfmt_type;
typedef agg::renderer_base<pixfmt_type> renderer_type;
agg::rendering_buffer source(im.getBytes(),im.width(),im.height(),im.width() * 4);
agg::rendering_buffer mask(im2.getBytes(),im2.width(),im2.height(),im2.width() * 4);
pixfmt_type pixf(source);
pixf.comp_op(static_cast<agg::comp_op_e>(mode));
agg::pixfmt_rgba32 pixf_mask(mask);
if (premultiply_src) pixf_mask.premultiply();
if (premultiply_dst) pixf.premultiply();
renderer_type ren(pixf);
// TODO - is this really opacity, or agg::cover?
ren.blend_from(pixf_mask,0, dx,dy,unsigned(255*opacity));
}
void composite(T1 & dst, T2 & src, composite_mode_e mode,
float opacity,
int dx,
int dy,
bool premultiply_src)
{
using color = agg::rgba8;
using order = agg::order_rgba;
using blender_type = agg::comp_op_adaptor_rgba_pre<color, order>;
using pixfmt_type = agg::pixfmt_custom_blend_rgba<blender_type, agg::rendering_buffer>;
using renderer_type = agg::renderer_base<pixfmt_type>;
agg::rendering_buffer dst_buffer(dst.getBytes(),dst.width(),dst.height(),dst.width() * 4);
agg::rendering_buffer src_buffer(src.getBytes(),src.width(),src.height(),src.width() * 4);
pixfmt_type pixf(dst_buffer);
pixf.comp_op(static_cast<agg::comp_op_e>(mode));
agg::pixfmt_rgba32 pixf_mask(src_buffer);
if (premultiply_src) pixf_mask.premultiply();
renderer_type ren(pixf);
ren.blend_from(pixf_mask,0,dx,dy,unsigned(255*opacity));
}
void composite(T1 & im, T2 & im2, composite_mode_e mode)
{
typedef agg::rgba8 color;
typedef agg::order_bgra order;
typedef agg::pixel32_type pixel_type;
typedef agg::comp_op_adaptor_rgba<color, order> blender_type;
typedef agg::pixfmt_custom_blend_rgba<blender_type, agg::rendering_buffer> pixfmt_type;
typedef agg::renderer_base<pixfmt_type> renderer_type;
typedef agg::comp_op_adaptor_rgba<color, order> blender_type;
typedef agg::renderer_base<pixfmt_type> renderer_type;
agg::rendering_buffer source(im.getBytes(),im.width(),im.height(),im.width() * 4);
agg::rendering_buffer mask(im2.getBytes(),im2.width(),im2.height(),im2.width() * 4);
agg::pixfmt_custom_blend_rgba<blender_type, agg::rendering_buffer> pixf(source);
agg::pixfmt_custom_blend_rgba<blender_type, agg::rendering_buffer> pixf_mask(mask);
switch(mode)
{
case clear :
pixf.comp_op(agg::comp_op_clear);
break;
case src:
pixf.comp_op(agg::comp_op_src);
break;
case dst:
pixf.comp_op(agg::comp_op_dst);
break;
case src_over:
pixf.comp_op(agg::comp_op_src_over);
break;
case dst_over:
pixf.comp_op(agg::comp_op_dst_over);
break;
case src_in:
pixf.comp_op(agg::comp_op_src_in);
break;
case dst_in:
pixf.comp_op(agg::comp_op_dst_in);
break;
case src_out:
pixf.comp_op(agg::comp_op_src_out);
break;
case dst_out:
pixf.comp_op(agg::comp_op_dst_out);
break;
case src_atop:
pixf.comp_op(agg::comp_op_src_atop);
break;
case dst_atop:
pixf.comp_op(agg::comp_op_dst_atop);
break;
case _xor:
pixf.comp_op(agg::comp_op_xor);
break;
case plus:
pixf.comp_op(agg::comp_op_plus);
break;
case minus:
pixf.comp_op(agg::comp_op_minus);
break;
case multiply:
pixf.comp_op(agg::comp_op_multiply);
break;
case screen:
pixf.comp_op(agg::comp_op_screen);
break;
case overlay:
pixf.comp_op(agg::comp_op_overlay);
break;
case darken:
pixf.comp_op(agg::comp_op_darken);
break;
case lighten:
pixf.comp_op(agg::comp_op_lighten);
break;
case color_dodge:
pixf.comp_op(agg::comp_op_color_dodge);
break;
case color_burn:
pixf.comp_op(agg::comp_op_color_burn);
break;
case hard_light:
pixf.comp_op(agg::comp_op_hard_light);
break;
case soft_light:
pixf.comp_op(agg::comp_op_soft_light);
break;
case difference:
pixf.comp_op(agg::comp_op_difference);
break;
case exclusion:
pixf.comp_op(agg::comp_op_exclusion);
break;
case contrast:
pixf.comp_op(agg::comp_op_contrast);
break;
case invert:
pixf.comp_op(agg::comp_op_invert);
break;
case invert_rgb:
pixf.comp_op(agg::comp_op_invert_rgb);
break;
default:
break;
}
renderer_type ren(pixf);
agg::renderer_base<pixfmt_type> rb(pixf);
rb.blend_from(pixf_mask,0,0,0,255);
}