1 /*
2  * Copyright (C) 2008 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package android.renderscript;
18 
19 import android.annotation.UnsupportedAppUsage;
20 
21 
22 /**
23  * @hide
24  * @deprecated in API 16
25  * <p>The RenderScript fragment program, also known as fragment shader is responsible
26  * for manipulating pixel data in a user defined way. It's constructed from a GLSL
27  * shader string containing the program body, textures inputs, and a Type object
28  * that describes the constants used by the program. Similar to the vertex programs,
29  * when an allocation with constant input values is bound to the shader, its values
30  * are sent to the graphics program automatically.</p>
31  * <p> The values inside the allocation are not explicitly tracked. If they change between two draw
32  * calls using the same program object, the runtime needs to be notified of that
33  * change by calling rsgAllocationSyncAll so it could send the new values to hardware.
34  * Communication between the vertex and fragment programs is handled internally in the
35  * GLSL code. For example, if the fragment program is expecting a varying input called
36  * varTex0, the GLSL code inside the program vertex must provide it.
37  * </p>
38  *
39  **/
40 public class ProgramFragment extends Program {
ProgramFragment(long id, RenderScript rs)41     ProgramFragment(long id, RenderScript rs) {
42         super(id, rs);
43     }
44 
45     /**
46      * @deprecated in API 16
47      */
48     public static class Builder extends BaseProgramBuilder {
49         /**
50          * @deprecated in API 16
51          * Create a builder object.
52          *
53          * @param rs Context to which the program will belong.
54          */
55         @UnsupportedAppUsage
Builder(RenderScript rs)56         public Builder(RenderScript rs) {
57             super(rs);
58         }
59 
60         /**
61          * @deprecated in API 16
62          * Creates ProgramFragment from the current state of the builder
63          *
64          * @return  ProgramFragment
65          */
66         @UnsupportedAppUsage
create()67         public ProgramFragment create() {
68             mRS.validate();
69             long[] tmp = new long[(mInputCount + mOutputCount + mConstantCount + mTextureCount) * 2];
70             String[] texNames = new String[mTextureCount];
71             int idx = 0;
72 
73             for (int i=0; i < mInputCount; i++) {
74                 tmp[idx++] = ProgramParam.INPUT.mID;
75                 tmp[idx++] = mInputs[i].getID(mRS);
76             }
77             for (int i=0; i < mOutputCount; i++) {
78                 tmp[idx++] = ProgramParam.OUTPUT.mID;
79                 tmp[idx++] = mOutputs[i].getID(mRS);
80             }
81             for (int i=0; i < mConstantCount; i++) {
82                 tmp[idx++] = ProgramParam.CONSTANT.mID;
83                 tmp[idx++] = mConstants[i].getID(mRS);
84             }
85             for (int i=0; i < mTextureCount; i++) {
86                 tmp[idx++] = ProgramParam.TEXTURE_TYPE.mID;
87                 tmp[idx++] = mTextureTypes[i].mID;
88                 texNames[i] = mTextureNames[i];
89             }
90 
91             long id = mRS.nProgramFragmentCreate(mShader, texNames, tmp);
92             ProgramFragment pf = new ProgramFragment(id, mRS);
93             initProgram(pf);
94             return pf;
95         }
96     }
97 }
98 
99 
100 
101