package org.andengine.opengl.shader;
import org.andengine.opengl.shader.constants.ShaderProgramConstants;
import org.andengine.opengl.shader.exception.ShaderProgramLinkException;
import org.andengine.opengl.util.GLState;
import org.andengine.opengl.vbo.attribute.VertexBufferObjectAttributes;
import android.opengl.GLES20;
/**
* (c) Zynga 2011
*
* @author Nicolas Gramlich <ngramlich@zynga.com>
* @since 13:56:44 - 25.08.2011
*/
public class PositionColorTextureCoordinatesShaderProgram extends ShaderProgram {
// ===========================================================
// Constants
// ===========================================================
private static PositionColorTextureCoordinatesShaderProgram INSTANCE;
public static final String VERTEXSHADER =
"uniform mat4 " + ShaderProgramConstants.UNIFORM_MODELVIEWPROJECTIONMATRIX + ";\n" +
"attribute vec4 " + ShaderProgramConstants.ATTRIBUTE_POSITION + ";\n" +
"attribute vec4 " + ShaderProgramConstants.ATTRIBUTE_COLOR + ";\n" +
"attribute vec2 " + ShaderProgramConstants.ATTRIBUTE_TEXTURECOORDINATES + ";\n" +
"varying vec4 " + ShaderProgramConstants.VARYING_COLOR + ";\n" +
"varying vec2 " + ShaderProgramConstants.VARYING_TEXTURECOORDINATES + ";\n" +
"void main() {\n" +
" " + ShaderProgramConstants.VARYING_COLOR + " = " + ShaderProgramConstants.ATTRIBUTE_COLOR + ";\n" +
" " + ShaderProgramConstants.VARYING_TEXTURECOORDINATES + " = " + ShaderProgramConstants.ATTRIBUTE_TEXTURECOORDINATES + ";\n" +
" gl_Position = " + ShaderProgramConstants.UNIFORM_MODELVIEWPROJECTIONMATRIX + " * " + ShaderProgramConstants.ATTRIBUTE_POSITION + ";\n" +
"}";
public static final String FRAGMENTSHADER =
"precision lowp float;\n" +
"uniform sampler2D " + ShaderProgramConstants.UNIFORM_TEXTURE_0 + ";\n" +
"varying lowp vec4 " + ShaderProgramConstants.VARYING_COLOR + ";\n" +
"varying mediump vec2 " + ShaderProgramConstants.VARYING_TEXTURECOORDINATES + ";\n" +
"void main() {\n" +
" gl_FragColor = " + ShaderProgramConstants.VARYING_COLOR + " * texture2D(" + ShaderProgramConstants.UNIFORM_TEXTURE_0 + ", " + ShaderProgramConstants.VARYING_TEXTURECOORDINATES + ");\n" +
"}";
// ===========================================================
// Fields
// ===========================================================
public static int sUniformModelViewPositionMatrixLocation = ShaderProgramConstants.LOCATION_INVALID;
public static int sUniformTexture0Location = ShaderProgramConstants.LOCATION_INVALID;
// ===========================================================
// Constructors
// ===========================================================
private PositionColorTextureCoordinatesShaderProgram() {
super(PositionColorTextureCoordinatesShaderProgram.VERTEXSHADER, PositionColorTextureCoordinatesShaderProgram.FRAGMENTSHADER);
}
public static PositionColorTextureCoordinatesShaderProgram getInstance() {
if(PositionColorTextureCoordinatesShaderProgram.INSTANCE == null) {
PositionColorTextureCoordinatesShaderProgram.INSTANCE = new PositionColorTextureCoordinatesShaderProgram();
}
return PositionColorTextureCoordinatesShaderProgram.INSTANCE;
}
// ===========================================================
// Getter & Setter
// ===========================================================
// ===========================================================
// Methods for/from SuperClass/Interfaces
// ===========================================================
@Override
protected void link(final GLState pGLState) throws ShaderProgramLinkException {
GLES20.glBindAttribLocation(this.mProgramID, ShaderProgramConstants.ATTRIBUTE_POSITION_LOCATION, ShaderProgramConstants.ATTRIBUTE_POSITION);
GLES20.glBindAttribLocation(this.mProgramID, ShaderProgramConstants.ATTRIBUTE_COLOR_LOCATION, ShaderProgramConstants.ATTRIBUTE_COLOR);
GLES20.glBindAttribLocation(this.mProgramID, ShaderProgramConstants.ATTRIBUTE_TEXTURECOORDINATES_LOCATION, ShaderProgramConstants.ATTRIBUTE_TEXTURECOORDINATES);
super.link(pGLState);
PositionColorTextureCoordinatesShaderProgram.sUniformModelViewPositionMatrixLocation = this.getUniformLocation(ShaderProgramConstants.UNIFORM_MODELVIEWPROJECTIONMATRIX);
PositionColorTextureCoordinatesShaderProgram.sUniformTexture0Location = this.getUniformLocation(ShaderProgramConstants.UNIFORM_TEXTURE_0);
}
@Override
public void bind(final GLState pGLState, final VertexBufferObjectAttributes pVertexBufferObjectAttributes) {
super.bind(pGLState, pVertexBufferObjectAttributes);
GLES20.glUniformMatrix4fv(PositionColorTextureCoordinatesShaderProgram.sUniformModelViewPositionMatrixLocation, 1, false, pGLState.getModelViewProjectionGLMatrix(), 0);
GLES20.glUniform1i(PositionColorTextureCoordinatesShaderProgram.sUniformTexture0Location, 0);
}
// ===========================================================
// Methods
// ===========================================================
// ===========================================================
// Inner and Anonymous Classes
// ===========================================================
}