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Gecko:Layers: Difference between revisions
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// Only managed layers can be drawn to directly from software. | // Only managed layers can be drawn to directly from software. | ||
// Any created layer can contain other layers inside, places anywhere | // Any created layer can contain other layers inside, places anywhere | ||
// on its surface. | // on its surface. The layer is initially locked, meaning it's not | ||
// shown until unlocked. | |||
Layer *CreateLayer(size, format, type); | Layer *CreateLayer(size, format, type); | ||
}; | }; | ||
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// This contains an alpha value so opacity can implicitly | // This contains an alpha value so opacity can implicitly | ||
// be controlled. | // be controlled. | ||
SetColor(color); | void SetColor(color); | ||
// Sets an affine transformation to place the layer with. | // Sets an affine transformation to place the layer with. | ||
SetTransform(matrix); | void SetTransform(matrix); | ||
// Add a layer to this layer. This layer may be blitted onto | // Add a layer to this layer. This layer may be blitted onto | ||
// this layer's hardware surface. | // this layer's hardware surface. | ||
AddLayer(ILayer); | void AddLayer(ILayer); | ||
// Optional pixel shader program to run on this layer. This can be | // Optional pixel shader program to run on this layer. This can be | ||
// used to apply a variety of effects to the layer when rendered. | // used to apply a variety of effects to the layer when rendered. | ||
SetShader(shader); | void SetShader(shader); | ||
// Lock the layer, this makes no changes take effect while in the | |||
// locked state. | |||
void Lock(); | |||
// Unlock the layer, this will cause the compositor to traverse | |||
// passed this frame in the tree when compositing. | |||
void Unlock(); | |||
// Clone an instance of this layer, it will contain a copy-on-write | |||
// reference to the contents of this layer. This layer will initially | |||
// be locked. | |||
ILayer *Clone(); | |||
}; | }; | ||
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// Unlock the surface, this means we're done. And will signal the | // Unlock the surface, this means we're done. And will signal the | ||
// compositor to update the associated texture and redraw. | // compositor to update the associated texture and redraw. | ||
Unlock(); | void Unlock(); | ||
}; | }; | ||