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Added new option:

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In renderwindow, press AKEY to see the alpha in B&W. Another AKEY shows
normal RGB again. This uses glColorMask, an opengl 1.0 function.
Really needed it for debugging alpha in rendering. :)
This commit is contained in:
Ton Roosendaal
2004-12-02 21:22:17 +00:00
parent aa92e3e37f
commit 541e36fe11
2 changed files with 25 additions and 1 deletions
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24
source/blender/src/renderwin.c
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@@ -108,6 +108,8 @@
*/
#define RW_FLAGS_PIXEL_EXAMINING (1<<3)
/* forces draw of alpha */
#define RW_FLAGS_ALPHA (1<<4)
typedef struct {
Window *win;
@@ -259,7 +261,21 @@ static void renderwin_draw(RenderWin *rw, int just_clear)
glRectfv(disprect[0], disprect[1]);
} else {
glPixelZoom(rw->zoom, rw->zoom);
glaDrawPixelsSafe(disprect[0][0], disprect[0][1], R.rectx, R.recty, R.rectot);
if(rw->flags & RW_FLAGS_ALPHA) {
char *rect= (char *)R.rectot;
glColorMask(1, 0, 0, 0);
glaDrawPixelsSafe(disprect[0][0], disprect[0][1], R.rectx, R.recty, rect+3);
glColorMask(0, 1, 0, 0);
glaDrawPixelsSafe(disprect[0][0], disprect[0][1], R.rectx, R.recty, rect+2);
glColorMask(0, 0, 1, 0);
glaDrawPixelsSafe(disprect[0][0], disprect[0][1], R.rectx, R.recty, rect+1);
glColorMask(1, 1, 1, 1);
}
else {
glaDrawPixelsSafe(disprect[0][0], disprect[0][1], R.rectx, R.recty, R.rectot);
}
glPixelZoom(1.0, 1.0);
}
@@ -393,6 +409,10 @@ static void renderwin_handler(Window *win, void *user_data, short evt, short val
rw->active= 0;
}
}
else if( evt==AKEY) {
rw->flags ^= RW_FLAGS_ALPHA;
renderwin_queue_redraw(render_win);
}
else if (evt==JKEY) {
if(R.flag==0) BIF_swap_render_rects();
}
@@ -578,6 +598,8 @@ static void renderwin_init_display_cb(void)
render_win->flags&= ~RW_FLAGS_ESCAPE;
render_win->active= 1;
}
/* make sure we are in normal draw again */
render_win->flags &= ~RW_FLAGS_ALPHA;
}
}