forked from bartvdbraak/blender
This is patch [#6772] Background image drawing speedup
Thanks goto Matthew Plough (meestaplu) I've tested it on linux with both an nvidia and an ATI card, I've also tested it on a mac and solaris, as well as through a remote display. So I think this one is pretty safe. If it causes problems on older systems we can revert it but I don't think we will have any issues with it. Kent
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@ -1869,6 +1869,7 @@ static void node_draw_preview(bNodePreview *preview, rctf *prv)
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glEnable(GL_BLEND);
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glBlendFunc( GL_ONE, GL_ONE_MINUS_SRC_ALPHA ); /* premul graphics */
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glColor4f(1.0, 1.0, 1.0, 1.0);
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glaDrawPixelsTex(prv->xmin, prv->ymin, preview->xsize, preview->ysize, GL_FLOAT, preview->rect);
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glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
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@ -436,10 +436,13 @@ static void draw_bgpic(void)
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glPushMatrix();
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glaDefine2DArea(&curarea->winrct);
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glEnable(GL_BLEND);
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glPixelTransferf(GL_ALPHA_SCALE, (1.0f-bgpic->blend));
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glPixelZoom(zoomx, zoomy);
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glaDrawPixelsSafe(x1, y1, ibuf->x, ibuf->y, ibuf->x, GL_RGBA, GL_UNSIGNED_BYTE, ibuf->rect);
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glColor4f(1.0, 1.0, 1.0, 1.0-bgpic->blend);
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glaDrawPixelsTex(x1, y1, ibuf->x, ibuf->y, GL_UNSIGNED_BYTE, ibuf->rect);
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glPixelZoom(1.0, 1.0);
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glPixelTransferf(GL_ALPHA_SCALE, 1.0f);
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