Move talk/app/webrtc to webrtc/api

talk/app/webrtc/java/android/org/webrtc/GlShader.java

-/*
- * libjingle
- * Copyright 2015 Google Inc.
- *
- * 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.
- *  3. The name of the author may not be used to endorse or promote products
- *     derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 THE AUTHOR 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.
- */
-
-package org.webrtc;
-
-import android.opengl.GLES20;
-
-import org.webrtc.Logging;
-
-import java.nio.FloatBuffer;
-
-// Helper class for handling OpenGL shaders and shader programs.
-public class GlShader {
-  private static final String TAG = "GlShader";
-
-  private static int compileShader(int shaderType, String source) {
-    int[] result = new int[] {
-        GLES20.GL_FALSE
-    };
-    int shader = GLES20.glCreateShader(shaderType);
-    GLES20.glShaderSource(shader, source);
-    GLES20.glCompileShader(shader);
-    GLES20.glGetShaderiv(shader, GLES20.GL_COMPILE_STATUS, result, 0);
-    if (result[0] != GLES20.GL_TRUE) {
-      Logging.e(TAG, "Could not compile shader " + shaderType + ":" +
-          GLES20.glGetShaderInfoLog(shader));
-      throw new RuntimeException(GLES20.glGetShaderInfoLog(shader));
-    }
-    GlUtil.checkNoGLES2Error("compileShader");
-    return shader;
-  }
-
-  private int vertexShader;
-  private int fragmentShader;
-  private int program;
-
-  public GlShader(String vertexSource, String fragmentSource) {
-    vertexShader = compileShader(GLES20.GL_VERTEX_SHADER, vertexSource);
-    fragmentShader = compileShader(GLES20.GL_FRAGMENT_SHADER, fragmentSource);
-    program = GLES20.glCreateProgram();
-    if (program == 0) {
-      throw new RuntimeException("Could not create program");
-    }
-    GLES20.glAttachShader(program, vertexShader);
-    GLES20.glAttachShader(program, fragmentShader);
-    GLES20.glLinkProgram(program);
-    int[] linkStatus = new int[] {
-      GLES20.GL_FALSE
-    };
-    GLES20.glGetProgramiv(program, GLES20.GL_LINK_STATUS, linkStatus, 0);
-    if (linkStatus[0] != GLES20.GL_TRUE) {
-      Logging.e(TAG, "Could not link program: " +
-          GLES20.glGetProgramInfoLog(program));
-      throw new RuntimeException(GLES20.glGetProgramInfoLog(program));
-    }
-    GlUtil.checkNoGLES2Error("Creating GlShader");
-  }
-
-  public int getAttribLocation(String label) {
-    if (program == -1) {
-      throw new RuntimeException("The program has been released");
-    }
-    int location = GLES20.glGetAttribLocation(program, label);
-    if (location < 0) {
-      throw new RuntimeException("Could not locate '" + label + "' in program");
-    }
-    return location;
-  }
-
-  /**
-   * Enable and upload a vertex array for attribute |label|. The vertex data is specified in
-   * |buffer| with |dimension| number of components per vertex.
-   */
-  public void setVertexAttribArray(String label, int dimension, FloatBuffer buffer) {
-    if (program == -1) {
-      throw new RuntimeException("The program has been released");
-    }
-    int location = getAttribLocation(label);
-    GLES20.glEnableVertexAttribArray(location);
-    GLES20.glVertexAttribPointer(location, dimension, GLES20.GL_FLOAT, false, 0, buffer);
-    GlUtil.checkNoGLES2Error("setVertexAttribArray");
-  }
-
-  public int getUniformLocation(String label) {
-    if (program == -1) {
-      throw new RuntimeException("The program has been released");
-    }
-    int location = GLES20.glGetUniformLocation(program, label);
-    if (location < 0) {
-      throw new RuntimeException("Could not locate uniform '" + label + "' in program");
-    }
-    return location;
-  }
-
-  public void useProgram() {
-    if (program == -1) {
-      throw new RuntimeException("The program has been released");
-    }
-    GLES20.glUseProgram(program);
-    GlUtil.checkNoGLES2Error("glUseProgram");
-  }
-
-  public void release() {
-    Logging.d(TAG, "Deleting shader.");
-    // Flag shaders for deletion (does not delete until no longer attached to a program).
-    if (vertexShader != -1) {
-      GLES20.glDeleteShader(vertexShader);
-      vertexShader = -1;
-    }
-    if (fragmentShader != -1) {
-      GLES20.glDeleteShader(fragmentShader);
-      fragmentShader = -1;
-    }
-    // Delete program, automatically detaching any shaders from it.
-    if (program != -1) {
-      GLES20.glDeleteProgram(program);
-      program = -1;
-    }
-  }
-}