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Diffstat (limited to 'src/jogl/classes/jogamp/opengl/util/glsl/GLSLArrayHandler.java')
| -rw-r--r-- | src/jogl/classes/jogamp/opengl/util/glsl/GLSLArrayHandler.java | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/src/jogl/classes/jogamp/opengl/util/glsl/GLSLArrayHandler.java b/src/jogl/classes/jogamp/opengl/util/glsl/GLSLArrayHandler.java new file mode 100644 index 000000000..b4b7b5ace --- /dev/null +++ b/src/jogl/classes/jogamp/opengl/util/glsl/GLSLArrayHandler.java @@ -0,0 +1,94 @@ +/** + * Copyright 2010 JogAmp Community. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, are + * permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, this list of + * conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, this list + * of conditions and the following disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF + * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * The views and conclusions contained in the software and documentation are those of the + * authors and should not be interpreted as representing official policies, either expressed + * or implied, of JogAmp Community. + */ + +package jogamp.opengl.util.glsl; + +import java.nio.Buffer; + +import javax.media.opengl.GL; +import javax.media.opengl.GL2ES2; +import javax.media.opengl.GLException; +import com.jogamp.opengl.util.GLArrayDataEditable; +import com.jogamp.opengl.util.GLArrayHandler; +import com.jogamp.opengl.util.glsl.ShaderState; + +/** + * Used for 1:1 GLSL arrays, i.e. where the buffer data + * represents this array only. + */ +public class GLSLArrayHandler implements GLArrayHandler { + private GLArrayDataEditable ad; + private ShaderState st; + + public GLSLArrayHandler(ShaderState st, GLArrayDataEditable ad) { + this.st = st; + this.ad = ad; + } + + public final void addSubHandler(GLArrayHandler handler) { + throw new UnsupportedOperationException(); + } + + public final void enableBuffer(GL gl, boolean enable) { + GL2ES2 glsl = gl.getGL2ES2(); + + if(enable) { + Buffer buffer = ad.getBuffer(); + + if(ad.isVBO()) { + // bind and refresh the VBO / vertex-attr only if necessary + if(!ad.isVBOWritten()) { + glsl.glBindBuffer(ad.getVBOTarget(), ad.getVBOName()); + if(null!=buffer) { + glsl.glBufferData(ad.getVBOTarget(), ad.getSizeInBytes(), buffer, ad.getVBOUsage()); + } + ad.setVBOWritten(true); + st.vertexAttribPointer(glsl, ad); + } else if(ad.getLocation() >= 0) { + // didn't experience a performance hit on this query .. + final int[] qi = new int[1]; + glsl.glGetVertexAttribiv(ad.getLocation(), GL2ES2.GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING, qi, 0); + if(ad.getVBOName() != qi[0]) { + glsl.glBindBuffer(ad.getVBOTarget(), ad.getVBOName()); + st.vertexAttribPointer(glsl, ad); + } + } + } else if(null!=buffer) { + st.vertexAttribPointer(glsl, ad); + } + st.enableVertexAttribArray(glsl, ad); + } else { + st.disableVertexAttribArray(glsl, ad); + if(ad.isVBO()) { + glsl.glBindBuffer(ad.getVBOTarget(), 0); + } + } + } + +} + |