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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1051 | chris | 1 | package com.gebauz.bauzoid.graphics.model; |
| 2 | |||
| 3 | import java.nio.ByteBuffer; |
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| 4 | import java.nio.FloatBuffer; |
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| 5 | import java.nio.IntBuffer; |
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| 6 | import java.util.ArrayList; |
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| 7 | import java.util.List; |
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| 8 | |||
| 9 | import com.badlogic.gdx.Gdx; |
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| 10 | import com.badlogic.gdx.graphics.GL20; |
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| 11 | import com.badlogic.gdx.utils.BufferUtils; |
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| 12 | import com.gebauz.bauzoid.app.Consts; |
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| 13 | import com.gebauz.bauzoid.graphics.Graphics; |
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| 14 | import com.gebauz.bauzoid.graphics.GraphicsObject; |
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| 15 | |||
| 16 | /** Vertex Stream that supports individual or interleaved vertex attributes. */ |
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| 17 | public class VertexStream extends GraphicsObject |
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| 18 | { |
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| 19 | /** Type of stream - single attribute or multi-attribute interleaved. */ |
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| 20 | public enum StreamType |
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| 21 | { |
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| 22 | INDIVIDUAL, |
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| 23 | INTERLEAVED |
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| 24 | }; |
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| 25 | |||
| 26 | private static List<VertexStream> mManagedStreams = new ArrayList<VertexStream>(); |
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| 27 | |||
| 28 | private StreamType mStreamType; |
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| 29 | private String mName; |
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| 30 | private FloatBuffer mData = null; |
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| 31 | private ByteBuffer mByteBuffer = null; |
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| 32 | |||
| 33 | private boolean mIsDynamic = false; |
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| 34 | |||
| 35 | private int mVertexCount = 0; |
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| 36 | private int mCoordsPerElement = 0; |
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| 37 | private int mBytesPerElement = 0; |
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| 38 | |||
| 39 | private int mBufferID = 0; |
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| 40 | //private static int[] BUFFERID = new int[1]; |
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| 41 | private static final IntBuffer BUFFERID = BufferUtils.newIntBuffer(1); |
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| 42 | |||
| 43 | private VertexAttribute[] mAttribs; |
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| 44 | |||
| 45 | /** Constructor. */ |
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| 46 | public VertexStream(Graphics graphics, StreamType streamType, String name, VertexAttribute[] attribs, boolean isDynamic) |
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| 47 | { |
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| 48 | super(graphics); |
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| 49 | mStreamType = streamType; |
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| 50 | mName = name; |
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| 51 | mAttribs = attribs; |
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| 52 | mIsDynamic = isDynamic; |
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| 53 | |||
| 54 | mManagedStreams.add(this); |
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| 55 | } |
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| 56 | |||
| 57 | /** Destroy all internal data. */ |
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| 58 | public void dispose() |
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| 59 | { |
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| 60 | mManagedStreams.remove(this); |
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| 61 | |||
| 62 | unload(); |
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| 63 | mAttribs = null; |
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| 64 | mVertexCount = 0; |
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| 65 | mCoordsPerElement = 0; |
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| 66 | mBytesPerElement = 0; |
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| 67 | |||
| 68 | if (mByteBuffer != null) |
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| 69 | { |
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| 70 | BufferUtils.disposeUnsafeByteBuffer(mByteBuffer); |
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| 71 | mByteBuffer = null; |
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| 72 | } |
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| 73 | mData = null; |
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| 74 | } |
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| 75 | |||
| 76 | /** Reload all managed vertex streams. */ |
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| 77 | public static void reloadManagedStreams() |
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| 78 | { |
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| 79 | for (int i = 0; i < mManagedStreams.size(); i++) |
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| 80 | { |
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| 81 | VertexStream stream = mManagedStreams.get(i); |
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| 82 | stream.upload(); |
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| 83 | Gdx.app.log(Consts.LOG_TAG, "VertexStream '" + stream.getName() + "' reloaded!"); |
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| 84 | } |
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| 85 | } |
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| 86 | |||
| 87 | /** Set the buffer data. */ |
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| 88 | public void setData(byte[] data, int coordsPerElement, int bytesPerElement) |
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| 89 | { |
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| 90 | if (data == null) |
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| 91 | { |
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| 92 | dispose(); |
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| 93 | return; |
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| 94 | } |
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| 95 | |||
| 96 | int newVertexCount = data.length / bytesPerElement; |
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| 97 | if ((mVertexCount != newVertexCount) || (mByteBuffer == null)) |
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| 98 | { |
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| 99 | // reallocate |
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| 100 | allocateBuffer(data.length); |
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| 101 | } |
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| 102 | |||
| 103 | mVertexCount = newVertexCount; |
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| 104 | mCoordsPerElement = coordsPerElement; |
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| 105 | mBytesPerElement = bytesPerElement; |
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| 106 | |||
| 107 | /*ByteBuffer byteBuffer = ByteBuffer.allocateDirect(data.length); |
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| 108 | byteBuffer.order(ByteOrder.nativeOrder()); |
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| 109 | byteBuffer.put(data); |
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| 110 | byteBuffer.position(0); |
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| 111 | mData = byteBuffer.asFloatBuffer();*/ |
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| 112 | |||
| 113 | BufferUtils.copy(data, 0, mData, data.length); |
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| 114 | mData.position(0); |
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| 115 | mData.limit(data.length); |
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| 116 | } |
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| 117 | |||
| 118 | /** Set the buffer data. */ |
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| 119 | public void setData(float[] data, int coordsPerElement, int bytesPerElement) |
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| 120 | { |
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| 121 | if (data == null) |
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| 122 | { |
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| 123 | dispose(); |
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| 124 | return; |
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| 125 | } |
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| 126 | |||
| 127 | int newVertexCount = data.length / coordsPerElement; |
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| 128 | if ((mVertexCount != newVertexCount) || (mByteBuffer == null)) |
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| 129 | { |
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| 130 | // reallocate |
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| 131 | allocateBuffer(data.length * Consts.SIZEOF_FLOAT); |
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| 132 | } |
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| 133 | |||
| 134 | mVertexCount = data.length / coordsPerElement; |
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| 135 | mCoordsPerElement = coordsPerElement; |
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| 136 | mBytesPerElement = bytesPerElement; |
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| 137 | |||
| 138 | BufferUtils.copy(data, mByteBuffer, data.length, 0); |
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| 139 | mData.position(0); |
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| 140 | mData.limit(data.length); |
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| 141 | } |
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| 142 | |||
| 143 | |||
| 144 | public void allocateBuffer(int newSize) |
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| 145 | { |
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| 146 | if (mByteBuffer != null) |
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| 147 | BufferUtils.disposeUnsafeByteBuffer(mByteBuffer); |
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| 148 | |||
| 149 | mByteBuffer = BufferUtils.newUnsafeByteBuffer(newSize); |
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| 150 | mData = mByteBuffer.asFloatBuffer(); |
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| 151 | mData.flip(); |
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| 152 | mByteBuffer.flip(); |
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| 153 | } |
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| 154 | |||
| 155 | /** Create GL handle and upload vertex data to hardware. */ |
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| 156 | public final void upload() |
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| 157 | { |
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| 158 | if (mData == null) |
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| 159 | return; |
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| 160 | |||
| 161 | Gdx.gl20.glGenBuffers(1, BUFFERID); |
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| 162 | mBufferID = BUFFERID.get(0); |
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| 163 | |||
| 164 | Gdx.gl20.glBindBuffer(GL20.GL_ARRAY_BUFFER, mBufferID); |
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| 165 | |||
| 166 | int usage = GL20.GL_STATIC_DRAW; |
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| 167 | if (isDynamic()) |
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| 168 | usage = GL20.GL_DYNAMIC_DRAW; |
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| 169 | |||
| 170 | //Gdx.gl20.glBufferData(GL20.GL_ARRAY_BUFFER, mData.capacity() * Consts.SIZEOF_FLOAT, mData, usage); |
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| 171 | Gdx.gl20.glBufferData(GL20.GL_ARRAY_BUFFER, mByteBuffer.limit(), mByteBuffer, usage); |
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| 172 | Gdx.gl20.glBindBuffer(GL20.GL_ARRAY_BUFFER, 0); |
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| 173 | } |
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| 174 | |||
| 175 | /** Reupload data to hardware. */ |
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| 176 | public final void reupload() |
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| 177 | { |
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| 178 | if (mBufferID == 0) |
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| 179 | { |
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| 180 | // perform initial upload |
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| 181 | upload(); |
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| 182 | return; |
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| 183 | } |
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| 184 | |||
| 185 | if (mData == null) |
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| 186 | return; |
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| 187 | |||
| 188 | Gdx.gl20.glBindBuffer(GL20.GL_ARRAY_BUFFER, mBufferID); |
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| 189 | Gdx.gl20.glBufferSubData(GL20.GL_ARRAY_BUFFER, 0, mData.capacity() * Consts.SIZEOF_FLOAT, mData); |
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| 190 | Gdx.gl20.glBindBuffer(GL20.GL_ARRAY_BUFFER, 0); |
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| 191 | } |
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| 192 | |||
| 193 | /** Unload vertex data from hardware. */ |
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| 194 | public final void unload() |
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| 195 | { |
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| 196 | deactivate(); |
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| 197 | BUFFERID.put(0, mBufferID); |
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| 198 | Gdx.gl20.glDeleteBuffers(1, BUFFERID); |
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| 199 | mBufferID = 0; |
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| 200 | } |
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| 201 | |||
| 202 | //static int mCurrentBufferId = 0; |
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| 203 | |||
| 204 | /** Activate stream for rendering. */ |
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| 205 | public final void activate() |
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| 206 | { |
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| 207 | // TODO: buffer state tracking |
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| 208 | //if (mCurrentBufferId != mBufferID) |
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| 209 | { |
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| 210 | Gdx.gl20.glBindBuffer(GL20.GL_ARRAY_BUFFER, mBufferID); |
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| 211 | //mCurrentBufferId = mBufferID; |
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| 212 | } |
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| 213 | |||
| 214 | for (int i = 0; i < mAttribs.length; i++) |
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| 215 | { |
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| 216 | VertexAttribute attrib = mAttribs[i]; |
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| 217 | |||
| 218 | // TODO: attrib to handle adapter |
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| 219 | Gdx.gl20.glVertexAttribPointer(attrib.getAttribType(), attrib.getCoordsPerElement(), GL20.GL_FLOAT, false, getBytesPerElement(), attrib.getByteOffset()); |
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| 220 | Gdx.gl20.glEnableVertexAttribArray(attrib.getAttribType()); |
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| 221 | } |
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| 222 | |||
| 223 | } |
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| 224 | |||
| 225 | public final void deactivate() |
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| 226 | { |
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| 227 | for (int i = 0; i < mAttribs.length; i++) |
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| 228 | { |
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| 229 | VertexAttribute attrib = mAttribs[i]; |
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| 230 | |||
| 231 | // TODO: attrib to handle adapter |
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| 232 | Gdx.gl20.glDisableVertexAttribArray(attrib.getAttribType()); |
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| 233 | } |
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| 234 | |||
| 235 | // TODO: buffer state tracking |
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| 236 | //Gdx.gl20.glBindBuffer(GL20.GL_ARRAY_BUFFER, 0); |
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| 237 | } |
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| 238 | |||
| 239 | /** Get Coords per element. */ |
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| 240 | public final int getCoordsPerElement() |
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| 241 | { |
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| 242 | return mCoordsPerElement; |
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| 243 | } |
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| 244 | |||
| 245 | /** Get number of bytes per complete element (equals vertex stride). */ |
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| 246 | public final int getBytesPerElement() |
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| 247 | { |
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| 248 | return mBytesPerElement; |
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| 249 | } |
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| 250 | |||
| 251 | /** Get number of elements. */ |
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| 252 | public final int getVertexCount() |
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| 253 | { |
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| 254 | return mVertexCount; |
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| 255 | } |
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| 256 | |||
| 257 | /** Get name of vertex stream. */ |
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| 258 | public final String getName() |
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| 259 | { |
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| 260 | return mName; |
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| 261 | } |
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| 262 | |||
| 263 | /** Get stream type. */ |
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| 264 | public final StreamType getStreamType() |
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| 265 | { |
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| 266 | return mStreamType; |
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| 267 | } |
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| 268 | |||
| 269 | /** Check if the stream is dynamic or static. */ |
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| 270 | public final boolean isDynamic() |
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| 271 | { |
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| 272 | return mIsDynamic; |
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| 273 | } |
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| 274 | } |
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| 275 |