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1 /* | 1 /* |
2 * Copyright (C) 2010 Google Inc. All rights reserved. | 2 * Copyright (C) 2010 Google Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions are | 5 * modification, are permitted provided that the following conditions are |
6 * met: | 6 * met: |
7 * | 7 * |
8 * * Redistributions of source code must retain the above copyright | 8 * * Redistributions of source code must retain the above copyright |
9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
10 * * Redistributions in binary form must reproduce the above | 10 * * Redistributions in binary form must reproduce the above |
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47 } | 47 } |
48 | 48 |
49 Canvas2DLayerChromium::Canvas2DLayerChromium(DrawingBuffer* drawingBuffer, Graph
icsLayerChromium* owner) | 49 Canvas2DLayerChromium::Canvas2DLayerChromium(DrawingBuffer* drawingBuffer, Graph
icsLayerChromium* owner) |
50 : CanvasLayerChromium(owner) | 50 : CanvasLayerChromium(owner) |
51 , m_drawingBuffer(drawingBuffer) | 51 , m_drawingBuffer(drawingBuffer) |
52 { | 52 { |
53 } | 53 } |
54 | 54 |
55 Canvas2DLayerChromium::~Canvas2DLayerChromium() | 55 Canvas2DLayerChromium::~Canvas2DLayerChromium() |
56 { | 56 { |
57 if (m_textureId) | |
58 layerRendererContext()->deleteTexture(m_textureId); | |
59 if (m_drawingBuffer && layerRenderer()) | 57 if (m_drawingBuffer && layerRenderer()) |
60 layerRenderer()->removeChildContext(m_drawingBuffer->graphicsContext3D()
.get()); | 58 layerRenderer()->removeChildContext(m_drawingBuffer->graphicsContext3D()
.get()); |
61 } | 59 } |
62 | 60 |
63 bool Canvas2DLayerChromium::drawsContent() const | 61 bool Canvas2DLayerChromium::drawsContent() const |
64 { | 62 { |
65 GraphicsContext3D* context; | 63 GraphicsContext3D* context; |
66 return (m_drawingBuffer | 64 return (m_drawingBuffer |
67 && (context = m_drawingBuffer->graphicsContext3D().get()) | 65 && (context = m_drawingBuffer->graphicsContext3D().get()) |
68 && (context->getExtensions()->getGraphicsResetStatusARB() == Graphic
sContext3D::NO_ERROR)); | 66 && (context->getExtensions()->getGraphicsResetStatusARB() == Graphic
sContext3D::NO_ERROR)); |
69 } | 67 } |
70 | 68 |
71 void Canvas2DLayerChromium::updateCompositorResources() | 69 void Canvas2DLayerChromium::updateCompositorResources() |
72 { | 70 { |
73 if (!m_contentsDirty || !drawsContent()) | 71 if (!m_contentsDirty || !drawsContent()) |
74 return; | 72 return; |
75 if (m_textureChanged) { // We have to generate a new backing texture. | |
76 GraphicsContext3D* context = layerRendererContext(); | |
77 if (m_textureId) | |
78 context->deleteTexture(m_textureId); | |
79 m_textureId = context->createTexture(); | |
80 context->activeTexture(GraphicsContext3D::TEXTURE0); | |
81 context->bindTexture(GraphicsContext3D::TEXTURE_2D, m_textureId); | |
82 IntSize size = m_drawingBuffer->size(); | |
83 context->texImage2DResourceSafe(GraphicsContext3D::TEXTURE_2D, 0, Graphi
csContext3D::RGBA, size.width(), size.height(), 0, GraphicsContext3D::RGBA, Grap
hicsContext3D::UNSIGNED_BYTE); | |
84 // Set the min-mag filters to linear and wrap modes to GraphicsContext3D
::CLAMP_TO_EDGE | |
85 // to get around NPOT texture limitations of GLES. | |
86 context->texParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D:
:TEXTURE_MIN_FILTER, GraphicsContext3D::LINEAR); | |
87 context->texParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D:
:TEXTURE_MAG_FILTER, GraphicsContext3D::LINEAR); | |
88 context->texParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D:
:TEXTURE_WRAP_S, GraphicsContext3D::CLAMP_TO_EDGE); | |
89 context->texParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D:
:TEXTURE_WRAP_T, GraphicsContext3D::CLAMP_TO_EDGE); | |
90 m_textureChanged = false; | |
91 // The flush() here is required because we have to make sure that the te
xture created in this | |
92 // context (the compositor context) is actually created by the service s
ide before the child context | |
93 // attempts to use it (in publishToPlatformLayer). | |
94 context->flush(); | |
95 } | |
96 // Update the contents of the texture used by the compositor. | 73 // Update the contents of the texture used by the compositor. |
97 if (m_contentsDirty) { | 74 if (m_contentsDirty) { |
98 m_drawingBuffer->publishToPlatformLayer(); | 75 m_drawingBuffer->publishToPlatformLayer(); |
99 m_contentsDirty = false; | 76 m_contentsDirty = false; |
100 } | 77 } |
101 } | 78 } |
102 | 79 |
103 void Canvas2DLayerChromium::setTextureChanged() | |
104 { | |
105 m_textureChanged = true; | |
106 } | |
107 | |
108 unsigned Canvas2DLayerChromium::textureId() const | 80 unsigned Canvas2DLayerChromium::textureId() const |
109 { | 81 { |
110 return m_textureId; | 82 return m_drawingBuffer ? m_drawingBuffer->platformColorBuffer() : 0; |
111 } | 83 } |
112 | 84 |
113 void Canvas2DLayerChromium::setDrawingBuffer(DrawingBuffer* drawingBuffer) | 85 void Canvas2DLayerChromium::setDrawingBuffer(DrawingBuffer* drawingBuffer) |
114 { | 86 { |
115 if (drawingBuffer != m_drawingBuffer) { | 87 if (drawingBuffer != m_drawingBuffer) { |
116 if (m_drawingBuffer && layerRenderer()) | 88 if (m_drawingBuffer && layerRenderer()) |
117 layerRenderer()->removeChildContext(m_drawingBuffer->graphicsContext
3D().get()); | 89 layerRenderer()->removeChildContext(m_drawingBuffer->graphicsContext
3D().get()); |
118 | 90 |
119 m_drawingBuffer = drawingBuffer; | 91 m_drawingBuffer = drawingBuffer; |
120 m_textureChanged = true; | |
121 | 92 |
122 if (drawingBuffer && layerRenderer()) | 93 if (drawingBuffer && layerRenderer()) |
123 layerRenderer()->addChildContext(m_drawingBuffer->graphicsContext3D(
).get()); | 94 layerRenderer()->addChildContext(m_drawingBuffer->graphicsContext3D(
).get()); |
124 } | 95 } |
125 } | 96 } |
126 | 97 |
127 void Canvas2DLayerChromium::setLayerRenderer(LayerRendererChromium* newLayerRend
erer) | 98 void Canvas2DLayerChromium::setLayerRenderer(LayerRendererChromium* newLayerRend
erer) |
128 { | 99 { |
129 if (layerRenderer() != newLayerRenderer && m_drawingBuffer) { | 100 if (layerRenderer() != newLayerRenderer && m_drawingBuffer) { |
130 if (m_drawingBuffer->graphicsContext3D()) { | 101 if (m_drawingBuffer->graphicsContext3D()) { |
131 if (layerRenderer()) | 102 if (layerRenderer()) |
132 layerRenderer()->removeChildContext(m_drawingBuffer->graphicsCon
text3D().get()); | 103 layerRenderer()->removeChildContext(m_drawingBuffer->graphicsCon
text3D().get()); |
133 if (newLayerRenderer) | 104 if (newLayerRenderer) |
134 newLayerRenderer->addChildContext(m_drawingBuffer->graphicsConte
xt3D().get()); | 105 newLayerRenderer->addChildContext(m_drawingBuffer->graphicsConte
xt3D().get()); |
135 } | 106 } |
136 | 107 |
137 LayerChromium::setLayerRenderer(newLayerRenderer); | 108 LayerChromium::setLayerRenderer(newLayerRenderer); |
138 } | 109 } |
139 } | 110 } |
140 | 111 |
141 } | 112 } |
142 #endif // USE(ACCELERATED_COMPOSITING) | 113 #endif // USE(ACCELERATED_COMPOSITING) |
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