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13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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15  * accompanied this code).
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25 
26 package sun.java2d.opengl;
27 
28 import java.awt.Color;
29 import java.awt.Transparency;
30 
31 import sun.java2d.SurfaceData;
32 import sun.java2d.SurfaceDataProxy;
33 import sun.java2d.loops.SurfaceType;
34 import sun.java2d.loops.CompositeType;
35 
36 /**
37  * The proxy class contains the logic for when to replace a
38  * SurfaceData with a cached OGL Texture and the code to create
39  * the accelerated surfaces.
40  */
41 public class OGLSurfaceDataProxy extends SurfaceDataProxy {
createProxy(SurfaceData srcData, OGLGraphicsConfig dstConfig)42     public static SurfaceDataProxy createProxy(SurfaceData srcData,
43                                                OGLGraphicsConfig dstConfig)
44     {
45         if (srcData instanceof OGLSurfaceData) {
46             // srcData must be a VolatileImage which either matches
47             // our pixel format or not - either way we do not cache it...
48             return UNCACHED;
49         }
50 
51         return new OGLSurfaceDataProxy(dstConfig, srcData.getTransparency());
52     }
53 
54     OGLGraphicsConfig oglgc;
55     int transparency;
56 
OGLSurfaceDataProxy(OGLGraphicsConfig oglgc, int transparency)57     public OGLSurfaceDataProxy(OGLGraphicsConfig oglgc, int transparency) {
58         this.oglgc = oglgc;
59         this.transparency = transparency;
60     }
61 
62     @Override
validateSurfaceData(SurfaceData srcData, SurfaceData cachedData, int w, int h)63     public SurfaceData validateSurfaceData(SurfaceData srcData,
64                                            SurfaceData cachedData,
65                                            int w, int h)
66     {
67         if (cachedData == null) {
68             try {
69                 cachedData = oglgc.createManagedSurface(w, h, transparency);
70             } catch (OutOfMemoryError er) {
71                 return null;
72             }
73         }
74         return cachedData;
75     }
76 
77     @Override
isSupportedOperation(SurfaceData srcData, int txtype, CompositeType comp, Color bgColor)78     public boolean isSupportedOperation(SurfaceData srcData,
79                                         int txtype,
80                                         CompositeType comp,
81                                         Color bgColor)
82     {
83         return comp.isDerivedFrom(CompositeType.AnyAlpha) &&
84                (bgColor == null || transparency == Transparency.OPAQUE);
85     }
86 }
87