1 : /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 : /* ***** BEGIN LICENSE BLOCK *****
3 : * Version: MPL 1.1/GPL 2.0/LGPL 2.1
4 : *
5 : * The contents of this file are subject to the Mozilla Public License Version
6 : * 1.1 (the "License"); you may not use this file except in compliance with
7 : * the License. You may obtain a copy of the License at
8 : * http://www.mozilla.org/MPL/
9 : *
10 : * Software distributed under the License is distributed on an "AS IS" basis,
11 : * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
12 : * for the specific language governing rights and limitations under the
13 : * License.
14 : *
15 : * The Original Code is Mozilla Corporation code.
16 : *
17 : * The Initial Developer of the Original Code is Mozilla Foundation.
18 : * Portions created by the Initial Developer are Copyright (C) 2009
19 : * the Initial Developer. All Rights Reserved.
20 : *
21 : * Contributor(s):
22 : * Robert O'Callahan <robert@ocallahan.org>
23 : * Vladimir Vukicevic <vladimir@pobox.com>
24 : *
25 : * Alternatively, the contents of this file may be used under the terms of
26 : * either the GNU General Public License Version 2 or later (the "GPL"), or
27 : * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
28 : * in which case the provisions of the GPL or the LGPL are applicable instead
29 : * of those above. If you wish to allow use of your version of this file only
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31 : * use your version of this file under the terms of the MPL, indicate your
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33 : * and other provisions required by the GPL or the LGPL. If you do not delete
34 : * the provisions above, a recipient may use your version of this file under
35 : * the terms of any one of the MPL, the GPL or the LGPL.
36 : *
37 : * ***** END LICENSE BLOCK ***** */
38 :
39 : #include "ColorLayerOGL.h"
40 :
41 : namespace mozilla {
42 : namespace layers {
43 :
44 : static void
45 0 : RenderColorLayer(ColorLayer* aLayer, LayerManagerOGL *aManager,
46 : const nsIntPoint& aOffset)
47 : {
48 0 : aManager->MakeCurrent();
49 :
50 : // XXX we might be able to improve performance by using glClear
51 :
52 0 : nsIntRect visibleRect = aLayer->GetEffectiveVisibleRegion().GetBounds();
53 :
54 : /* Multiply color by the layer opacity, as the shader
55 : * ignores layer opacity and expects a final color to
56 : * write to the color buffer. This saves a needless
57 : * multiply in the fragment shader.
58 : */
59 0 : gfxRGBA color(aLayer->GetColor());
60 0 : float opacity = aLayer->GetEffectiveOpacity() * color.a;
61 0 : color.r *= opacity;
62 0 : color.g *= opacity;
63 0 : color.b *= opacity;
64 0 : color.a = opacity;
65 :
66 0 : SolidColorLayerProgram *program = aManager->GetColorLayerProgram();
67 0 : program->Activate();
68 0 : program->SetLayerQuadRect(visibleRect);
69 0 : program->SetLayerTransform(aLayer->GetEffectiveTransform());
70 0 : program->SetRenderOffset(aOffset);
71 0 : program->SetRenderColor(color);
72 :
73 0 : aManager->BindAndDrawQuad(program);
74 0 : }
75 :
76 : void
77 0 : ColorLayerOGL::RenderLayer(int,
78 : const nsIntPoint& aOffset)
79 : {
80 0 : RenderColorLayer(this, mOGLManager, aOffset);
81 0 : }
82 :
83 : void
84 0 : ShadowColorLayerOGL::RenderLayer(int,
85 : const nsIntPoint& aOffset)
86 : {
87 0 : RenderColorLayer(this, mOGLManager, aOffset);
88 0 : }
89 :
90 :
91 : } /* layers */
92 : } /* mozilla */
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