ProgramVertexFixedFunction.java revision a23d4e792cb13090c540edfdd5cee03799bb9d48 
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
17package android.renderscript;
18
19
20import android.graphics.Matrix;
21import android.util.Config;
22import android.util.Log;
23
24
25/**
26 *
27 **/
28public class ProgramVertexFixedFunction extends ProgramVertex {
29
30    ProgramVertexFixedFunction(int id, RenderScript rs) {
31        super(id, rs);
32    }
33
34    public void bindConstants(Constants va) {
35        mRS.validate();
36        bindConstants(va.getAllocation(), 0);
37    }
38
39    static class InternalBuilder extends BaseProgramBuilder {
40        public InternalBuilder(RenderScript rs) {
41            super(rs);
42        }
43
44        public InternalBuilder addInput(Element e) throws IllegalStateException {
45            // Should check for consistant and non-conflicting names...
46            if(mInputCount >= MAX_INPUT) {
47                throw new RSIllegalArgumentException("Max input count exceeded.");
48            }
49            if (e.isComplex()) {
50                throw new RSIllegalArgumentException("Complex elements not allowed.");
51            }
52            mInputs[mInputCount++] = e;
53            return this;
54        }
55
56        public ProgramVertexFixedFunction create() {
57            mRS.validate();
58            int[] tmp = new int[(mInputCount + mOutputCount + mConstantCount + mTextureCount) * 2];
59            int idx = 0;
60
61            for (int i=0; i < mInputCount; i++) {
62                tmp[idx++] = ProgramParam.INPUT.mID;
63                tmp[idx++] = mInputs[i].getID();
64            }
65            for (int i=0; i < mOutputCount; i++) {
66                tmp[idx++] = ProgramParam.OUTPUT.mID;
67                tmp[idx++] = mOutputs[i].getID();
68            }
69            for (int i=0; i < mConstantCount; i++) {
70                tmp[idx++] = ProgramParam.CONSTANT.mID;
71                tmp[idx++] = mConstants[i].getID();
72            }
73            for (int i=0; i < mTextureCount; i++) {
74                tmp[idx++] = ProgramParam.TEXTURE_TYPE.mID;
75                tmp[idx++] = mTextureTypes[i].mID;
76            }
77
78            int id = mRS.nProgramVertexCreate(mShader, tmp);
79            ProgramVertexFixedFunction pv = new ProgramVertexFixedFunction(id, mRS);
80            initProgram(pv);
81            return pv;
82        }
83    }
84
85    public static class Builder {
86        boolean mTextureMatrixEnable;
87        String mShader;
88        RenderScript mRS;
89
90        public Builder(RenderScript rs) {
91            mRS = rs;
92        }
93
94        public Builder setTextureMatrixEnable(boolean enable) {
95            mTextureMatrixEnable = enable;
96            return this;
97        }
98        static Type getConstantInputType(RenderScript rs) {
99            Element.Builder b = new Element.Builder(rs);
100            b.add(Element.MATRIX4X4(rs), "MV");
101            b.add(Element.MATRIX4X4(rs), "P");
102            b.add(Element.MATRIX4X4(rs), "TexMatrix");
103            b.add(Element.MATRIX4X4(rs), "MVP");
104
105            Type.Builder typeBuilder = new Type.Builder(rs, b.create());
106            typeBuilder.setX(1);
107            return typeBuilder.create();
108        }
109
110        private void buildShaderString() {
111
112            mShader  = "//rs_shader_internal\n";
113            mShader += "varying vec4 varColor;\n";
114            mShader += "varying vec2 varTex0;\n";
115
116            mShader += "void main() {\n";
117            mShader += "  gl_Position = UNI_MVP * ATTRIB_position;\n";
118            mShader += "  gl_PointSize = 1.0;\n";
119
120            mShader += "  varColor = ATTRIB_color;\n";
121            if (mTextureMatrixEnable) {
122                mShader += "  varTex0 = (UNI_TexMatrix * vec4(ATTRIB_texture0, 0.0, 1.0)).xy;\n";
123            } else {
124                mShader += "  varTex0 = ATTRIB_texture0;\n";
125            }
126            mShader += "}\n";
127        }
128
129        public ProgramVertexFixedFunction create() {
130            buildShaderString();
131
132            InternalBuilder sb = new InternalBuilder(mRS);
133            sb.setShader(mShader);
134            sb.addConstant(getConstantInputType(mRS));
135
136            Element.Builder b = new Element.Builder(mRS);
137            b.add(Element.F32_4(mRS), "position");
138            b.add(Element.F32_4(mRS), "color");
139            b.add(Element.F32_3(mRS), "normal");
140            b.add(Element.F32_2(mRS), "texture0");
141            sb.addInput(b.create());
142
143            return sb.create();
144        }
145    }
146
147    public static class Constants {
148        static final int MODELVIEW_OFFSET = 0;
149        static final int PROJECTION_OFFSET = 16;
150        static final int TEXTURE_OFFSET = 32;
151
152        Matrix4f mModel;
153        Matrix4f mProjection;
154        Matrix4f mTexture;
155
156        Allocation mAlloc;
157        Allocation getAllocation() {
158            return mAlloc;
159        }
160        private FieldPacker mIOBuffer;
161
162        public Constants(RenderScript rs) {
163            Type constInputType = ProgramVertexFixedFunction.Builder.getConstantInputType(rs);
164            mAlloc = Allocation.createTyped(rs, constInputType);
165            int bufferSize = constInputType.getElement().getSizeBytes()*
166                             constInputType.getCount();
167            mIOBuffer = new FieldPacker(bufferSize);
168            mModel = new Matrix4f();
169            mProjection = new Matrix4f();
170            mTexture = new Matrix4f();
171            setModelview(new Matrix4f());
172            setProjection(new Matrix4f());
173            setTexture(new Matrix4f());
174        }
175
176        public void destroy() {
177            mAlloc.destroy();
178            mAlloc = null;
179        }
180
181        private void addToBuffer(int offset, Matrix4f m) {
182            mIOBuffer.reset(offset);
183            for(int i = 0; i < 16; i ++) {
184                mIOBuffer.addF32(m.mMat[i]);
185            }
186            mAlloc.copyFrom(mIOBuffer.getData());
187        }
188
189        public void setModelview(Matrix4f m) {
190            mModel.load(m);
191            addToBuffer(MODELVIEW_OFFSET*4, m);
192        }
193
194        public void setProjection(Matrix4f m) {
195            mProjection.load(m);
196            addToBuffer(PROJECTION_OFFSET*4, m);
197        }
198
199        public void setTexture(Matrix4f m) {
200            mTexture.load(m);
201            addToBuffer(TEXTURE_OFFSET*4, m);
202        }
203    }
204}
205