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the blender is not called when scaling and if it were using pixfmt_rgba32_pre would be wrong, so switch back to pixfmt_rgba32

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This commit is contained in:
Dane Springmeyer 2012-09-12 12:34:35 -07:00
parent 8cb2ce41ac
commit 1b4e7a8fd5
1 changed files with 5 additions and 6 deletions
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11
src/image_scaling.cpp
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@ -264,8 +264,7 @@ void scale_image_agg(Image & target,
double ratio)
{
typedef agg::pixfmt_rgba32 pixfmt;
typedef agg::pixfmt_rgba32_pre pixfmt_pre;
typedef agg::renderer_base<pixfmt_pre> renderer_base;
typedef agg::renderer_base<pixfmt> renderer_base;
// define some stuff we'll use soon
agg::rasterizer_scanline_aa<> ras;
@ -279,9 +278,9 @@ void scale_image_agg(Image & target,
typedef agg::image_accessor_clone<pixfmt> img_src_type;
img_src_type img_src(pixf_src);
// initialise destination AGG buffer (with transparency)
// initialize destination AGG buffer (with transparency)
agg::rendering_buffer rbuf_dst((unsigned char*)target.getBytes(), target.width(), target.height(), target.width() * 4);
pixfmt_pre pixf_dst(rbuf_dst);
pixfmt pixf_dst(rbuf_dst);
renderer_base rb_dst(pixf_dst);
rb_dst.clear(agg::rgba(0, 0, 0, 0));
@ -294,8 +293,8 @@ void scale_image_agg(Image & target,
interpolator_type interpolator(img_mtx);
// draw an anticlockwise polygon to render our image into
double scaled_width = target.width();//source.width() * image_ratio;
double scaled_height = target.height();//source.height() * image_ratio;
double scaled_width = target.width();
double scaled_height = target.height();
ras.reset();
ras.move_to_d(x_off_f, y_off_f);
ras.line_to_d(x_off_f + scaled_width, y_off_f);