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81 lines
2.9 KiB
Diff
81 lines
2.9 KiB
Diff
From: Robert O'Callahan <robert@ocallahan.org>
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Bug 579985. Using CGContextSetAlpha to implement mask alpha doesn't work for some operators. r=jrmuizel,a=blocking
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diff --git a/gfx/cairo/cairo/src/cairo-quartz-surface.c b/gfx/cairo/cairo/src/cairo-quartz-surface.c
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--- a/gfx/cairo/cairo/src/cairo-quartz-surface.c
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+++ b/gfx/cairo/cairo/src/cairo-quartz-surface.c
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@@ -2734,17 +2734,19 @@ _cairo_quartz_surface_mask (void *abstra
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if (IS_EMPTY(surface))
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return CAIRO_STATUS_SUCCESS;
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rv = _cairo_surface_clipper_set_clip (&surface->clipper, clip);
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if (unlikely (rv))
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return rv;
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- if (mask->type == CAIRO_PATTERN_TYPE_SOLID) {
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+ /* Using CGContextSetAlpha to implement mask alpha doesn't work for all operators. */
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+ if (mask->type == CAIRO_PATTERN_TYPE_SOLID &&
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+ op == CAIRO_OPERATOR_OVER) {
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/* This is easy; we just need to paint with the alpha. */
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cairo_solid_pattern_t *solid_mask = (cairo_solid_pattern_t *) mask;
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CGContextSetAlpha (surface->cgContext, solid_mask->color.alpha);
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rv = _cairo_quartz_surface_paint (surface, op, source, clip);
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CGContextSetAlpha (surface->cgContext, 1.0);
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return rv;
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diff --git a/layout/reftests/bugs/579985-1-ref.html b/layout/reftests/bugs/579985-1-ref.html
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new file mode 100644
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--- /dev/null
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+++ b/layout/reftests/bugs/579985-1-ref.html
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@@ -0,0 +1,6 @@
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+<!DOCTYPE HTML>
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+<html>
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+<body>
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+<div style="width:100px; height:100px; background:blue; opacity:0.5;">Hello</div>
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+</body>
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+</html>
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diff --git a/layout/reftests/bugs/579985-1.html b/layout/reftests/bugs/579985-1.html
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new file mode 100644
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--- /dev/null
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+++ b/layout/reftests/bugs/579985-1.html
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@@ -0,0 +1,16 @@
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+<!DOCTYPE HTML>
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+<html class="reftest-wait">
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+<head>
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+<script>
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+function doTest() {
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+ var d = document.getElementById("d");
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+ d.style.opacity = 0.75;
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+ document.documentElement.removeAttribute("class");
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+}
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+window.addEventListener("MozReftestInvalidate", doTest, false);
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+</script>
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+</head>
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+<body>
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+<div id="d" style="width:100px; height:100px; background:blue;">Hello</div>
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+</body>
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+</html>
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diff --git a/layout/reftests/bugs/reftest.list b/layout/reftests/bugs/reftest.list
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--- a/layout/reftests/bugs/reftest.list
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+++ b/layout/reftests/bugs/reftest.list
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@@ -1499,16 +1499,17 @@ random-if(layersGPUAccelerated) == 56499
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== 571347-3.html 571347-3-ref.html
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== 572598-1.html 572598-ref.html
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== 574898-1.html 574898-ref.html
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== 579655-1.html 579655-1-ref.html
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== 577838-1.html 577838-1-ref.html
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== 577838-2.html 577838-2-ref.html
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random-if(layersGPUAccelerated) == 579323-1.html 579323-1-ref.html
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== 579349-1.html 579349-1-ref.html
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+== 579985-1.html 579985-1-ref.html
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== 580160-1.html 580160-1-ref.html
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HTTP(..) == 580863-1.html 580863-1-ref.html
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random-if(layersGPUAccelerated) == 581317-1.html 581317-1-ref.html
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== 581579-1.html 581579-1-ref.html
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== 582037-1a.html 582037-1-ref.html
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== 582037-1b.html 582037-1-ref.html
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== 582037-2a.html 582037-2-ref.html
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== 582037-2b.html 582037-2-ref.html
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