| /* |
| * Copyright (C) 2009 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package android.renderscript; |
| |
| import java.lang.Math; |
| import android.util.Log; |
| |
| |
| public class ProgramVertexAlloc { |
| public static final int MODELVIEW_OFFSET = 0; |
| public static final int PROJECTION_OFFSET = 16; |
| public static final int TEXTURE_OFFSET = 32; |
| |
| Matrix mModel; |
| Matrix mProjection; |
| Matrix mTexture; |
| |
| public RenderScript.Allocation mAlloc; |
| |
| public ProgramVertexAlloc(RenderScript rs) { |
| mModel = new Matrix(); |
| mProjection = new Matrix(); |
| mTexture = new Matrix(); |
| |
| mAlloc = rs.allocationCreatePredefSized( |
| RenderScript.ElementPredefined.USER_FLOAT, |
| 48); |
| |
| mAlloc.subData1D(MODELVIEW_OFFSET, 16, mModel.mMat); |
| mAlloc.subData1D(PROJECTION_OFFSET, 16, mProjection.mMat); |
| mAlloc.subData1D(TEXTURE_OFFSET, 16, mTexture.mMat); |
| } |
| |
| public void loadModelview(Matrix m) { |
| mModel = m; |
| mAlloc.subData1D(MODELVIEW_OFFSET, 16, m.mMat); |
| } |
| |
| public void loadProjection(Matrix m) { |
| mProjection = m; |
| mAlloc.subData1D(PROJECTION_OFFSET, 16, m.mMat); |
| } |
| |
| public void loadTexture(Matrix m) { |
| mTexture = m; |
| mAlloc.subData1D(TEXTURE_OFFSET, 16, m.mMat); |
| } |
| |
| public void setupOrthoWindow(int w, int h) { |
| mProjection.loadOrtho(0,w, h,0, -1,1); |
| mAlloc.subData1D(PROJECTION_OFFSET, 16, mProjection.mMat); |
| } |
| |
| public void setupOrthoNormalized(int w, int h) { |
| // range -1,1 in the narrow axis. |
| if(w > h) { |
| float aspect = ((float)w) / h; |
| mProjection.loadOrtho(-aspect,aspect, -1,1, -1,1); |
| } else { |
| float aspect = ((float)h) / w; |
| mProjection.loadOrtho(-1,1, -aspect,aspect, -1,1); |
| } |
| mAlloc.subData1D(PROJECTION_OFFSET, 16, mProjection.mMat); |
| } |
| |
| public void setupProjectionNormalized(int w, int h) { |
| // range -1,1 in the narrow axis at z = 0. |
| Matrix m1 = new Matrix(); |
| Matrix m2 = new Matrix(); |
| |
| if(w > h) { |
| float aspect = ((float)w) / h; |
| m1.loadFrustum(-aspect,aspect, -1,1, 1,100); |
| } else { |
| float aspect = ((float)h) / w; |
| m1.loadFrustum(-1,1, -aspect,aspect, 1,100); |
| } |
| |
| m2.loadRotate(180, 0, 1, 0); |
| m1.loadMultiply(m1, m2); |
| |
| m2.loadScale(-2, 2, 1); |
| m1.loadMultiply(m1, m2); |
| |
| m2.loadTranslate(0, 0, 2); |
| m1.loadMultiply(m1, m2); |
| |
| mProjection = m1; |
| mAlloc.subData1D(PROJECTION_OFFSET, 16, mProjection.mMat); |
| } |
| |
| } |
| |
| |
| |
| |
| |
| |