109 lines
3.4 KiB
Java
109 lines
3.4 KiB
Java
/*
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* Copyright (C) 2008 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.renderscript;
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import android.graphics.Matrix;
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import android.util.Config;
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import android.util.Log;
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/**
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* ProgramVertex, also know as a vertex shader, describes a
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* stage in the graphics pipeline responsible for manipulating
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* geometric data in a user-defined way.
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*
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**/
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public class ProgramVertex extends Program {
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ProgramVertex(int id, RenderScript rs) {
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super(id, rs);
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}
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/**
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* Builder class for creating ProgramVertex objects.
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* The builder starts empty and the user must minimally provide
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* the GLSL shader code, and the varying inputs. Constant, or
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* uniform parameters to the shader may optionally be provided as
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* well.
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*
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**/
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public static class Builder extends BaseProgramBuilder {
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/**
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* Create a builder object.
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*
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* @param rs
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*/
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public Builder(RenderScript rs) {
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super(rs);
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}
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/**
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* Add varying inputs to the program
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*
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* @param e element describing the layout of the varying input
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* structure
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* @return self
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*/
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public Builder addInput(Element e) throws IllegalStateException {
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// Should check for consistant and non-conflicting names...
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if(mInputCount >= MAX_INPUT) {
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throw new RSIllegalArgumentException("Max input count exceeded.");
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}
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if (e.isComplex()) {
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throw new RSIllegalArgumentException("Complex elements not allowed.");
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}
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mInputs[mInputCount++] = e;
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return this;
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}
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/**
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* Creates ProgramVertex from the current state of the builder
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*
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* @return ProgramVertex
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*/
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public ProgramVertex create() {
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mRS.validate();
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int[] tmp = new int[(mInputCount + mOutputCount + mConstantCount + mTextureCount) * 2];
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int idx = 0;
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for (int i=0; i < mInputCount; i++) {
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tmp[idx++] = ProgramParam.INPUT.mID;
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tmp[idx++] = mInputs[i].getID();
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}
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for (int i=0; i < mOutputCount; i++) {
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tmp[idx++] = ProgramParam.OUTPUT.mID;
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tmp[idx++] = mOutputs[i].getID();
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}
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for (int i=0; i < mConstantCount; i++) {
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tmp[idx++] = ProgramParam.CONSTANT.mID;
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tmp[idx++] = mConstants[i].getID();
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}
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for (int i=0; i < mTextureCount; i++) {
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tmp[idx++] = ProgramParam.TEXTURE_TYPE.mID;
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tmp[idx++] = mTextureTypes[i].mID;
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}
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int id = mRS.nProgramVertexCreate(mShader, tmp);
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ProgramVertex pv = new ProgramVertex(id, mRS);
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initProgram(pv);
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return pv;
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}
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}
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}
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