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Fix T44814: 'preview' icons would not greyout.

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Since they are premultiplied, we need separated handling of colors and alpha blending
if we want additional alpha factor to work OK.
This commit is contained in:
Bastien Montagne 2015-05-24 18:35:14 +02:00
parent a28adf1b35
commit 78918e761f
1 changed files with 2 additions and 5 deletions
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7
source/blender/editors/interface/interface_icons.c
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@ -1224,15 +1224,12 @@ static void icon_draw_size(
PreviewImage *pi = (icon->type != 0) ? BKE_previewimg_id_ensure((ID *)icon->obj) : icon->obj;
if (pi) {
/* Do deferred loading/generation if needed. */
// BKE_previewimg_ensure(pi, size);
/* no create icon on this level in code */
if (!pi->rect[size]) return; /* something has gone wrong! */
/* preview images use premul alpha ... */
glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
icon_draw_rect(x, y, w, h, aspect, pi->w[size], pi->h[size], pi->rect[size], 1.0f, NULL, is_preview);
glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
icon_draw_rect(x, y, w, h, aspect, pi->w[size], pi->h[size], pi->rect[size], alpha, rgb, is_preview);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
}
}