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[gl] Fix create_gradient_texture to premultiply alpha.

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This commit is contained in:
Eric Anholt 2010-02-04 00:12:58 -08:00
parent 31e706454b
commit 05b18fc09a
1 changed files with 3 additions and 0 deletions
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3
src/cairo-gl-surface.c
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@ -1025,6 +1025,9 @@ _cairo_gl_create_gradient_texture (cairo_gl_context_t *ctx,
cairo_pattern_get_color_stop_rgba (&pattern->base, i,
&offset, &r, &g, &b, &a);
r = r * a;
g = g * a;
b = b * a;
stop_index = (stops[i].offset - *first_offset) / delta_offsets * tex_width;
if (stop_index == tex_width)
stop_index = tex_width - 1;