From b3eed5170f323d1c6d4d90de28a691eebeb035df Mon Sep 17 00:00:00 2001
From: Kenneth Russel <kbrussel@alum.mit.edu>
Date: Tue, 13 May 2008 11:21:23 +0000
Subject: OpenGL ES 1 and ES 2 demos, not built by default; build.xml changes
to conditionally build these demos via ant -Djogl.es1=1 or ant -Djogl.es2=1
git-svn-id: file:///usr/local/projects/SUN/JOGL/git-svn/../svn-server-sync/jogl-demos/trunk@228 3298f667-5e0e-4b4a-8ed4-a3559d26a5f4
---
src/demos/apx/es2/Shader.java | 189 ++++++++++++++++++++++++++++++++++++++++++
1 file changed, 189 insertions(+)
create mode 100755 src/demos/apx/es2/Shader.java
(limited to 'src/demos/apx/es2/Shader.java')
diff --git a/src/demos/apx/es2/Shader.java b/src/demos/apx/es2/Shader.java
new file mode 100755
index 0000000..3fde283
--- /dev/null
+++ b/src/demos/apx/es2/Shader.java
@@ -0,0 +1,189 @@
+package demos.apx;
+
+import java.io.UnsupportedEncodingException;
+import java.nio.*;
+import javax.media.opengl.*;
+import javax.media.opengl.glu.*;
+
+public class Shader {
+ private int program;
+ private int vertexShader;
+ private int fragmentShader;
+
+ private Shader() {
+ }
+
+ public static Shader createBinaryProgram(byte[] vertexShaderCode, int vertexShaderFormat,
+ byte[] fragmentShaderCode, int fragmentShaderFormat) throws GLException {
+ Shader shader = new Shader();
+ shader.createBinaryProgramImpl(vertexShaderCode, vertexShaderFormat,
+ fragmentShaderCode, fragmentShaderFormat);
+ shader.useProgram();
+ return shader;
+ }
+
+ public void setAttribByName(String name, int size, int type, boolean normalized, int stride, Buffer pointer) {
+ GL gl = GLU.getCurrentGL();
+ int index = gl.glGetAttribLocation(program, name);
+ gl.glVertexAttribPointer(index, size, type, normalized, stride, pointer);
+ gl.glEnableVertexAttribArray(index);
+ // FIXME
+ // trackAttribLocation(index);
+ }
+
+ public int getUniformLocation(String name) {
+ GL gl = GLU.getCurrentGL();
+ return gl.glGetUniformLocation(program, name);
+ }
+
+ public void useProgram() {
+ GL gl = GLU.getCurrentGL();
+ gl.glUseProgram(program);
+ }
+
+ //----------------------------------------------------------------------
+ // Internals only below this point
+ //
+
+ private void createBinaryProgramImpl(byte[] vertexShaderCode, int vertexShaderFormat,
+ byte[] fragmentShaderCode, int fragmentShaderFormat) throws GLException {
+ allocProgram();
+ int[] numBinaryFormats = new int[1];
+ GL gl = GLU.getCurrentGL();
+ gl.glGetIntegerv(GL.GL_NUM_SHADER_BINARY_FORMATS, numBinaryFormats, 0);
+ if (numBinaryFormats[0] > 0) {
+ int[] binaryFormats = new int[numBinaryFormats[0]];
+ gl.glGetIntegerv(GL.GL_SHADER_BINARY_FORMATS, binaryFormats, 0);
+ boolean gotVertexFormat = false;
+ boolean gotFragmentFormat = false;
+
+ for (int i = 0; i < binaryFormats.length && (!gotVertexFormat || !gotFragmentFormat); i++) {
+ if (!gotVertexFormat) {
+ gotVertexFormat = (binaryFormats[i] == vertexShaderFormat);
+ }
+ if (!gotFragmentFormat) {
+ gotFragmentFormat = (binaryFormats[i] == fragmentShaderFormat);
+ }
+ }
+
+ if (!gotVertexFormat) {
+ throw new RuntimeException("Binary vertex program format 0x" + Integer.toHexString(vertexShaderFormat) +
+ " not available");
+ }
+
+ if (!gotFragmentFormat) {
+ throw new RuntimeException("Binary fragment program format 0x" + Integer.toHexString(fragmentShaderFormat) +
+ " not available");
+ }
+ }
+ // Set up the shaders
+ setupBinaryShader(vertexShader, vertexShaderCode, vertexShaderFormat);
+ setupBinaryShader(fragmentShader, fragmentShaderCode, fragmentShaderFormat);
+
+ // Set up the shader program
+ gl.glLinkProgram(program);
+ if (!glslLog(program, GL.GL_LINK_STATUS, "link")) {
+ throw new GLException("Error linking program");
+ }
+ }
+
+ private void allocProgram() {
+ GL gl = GLU.getCurrentGL();
+ vertexShader = gl.glCreateShader(GL.GL_VERTEX_SHADER);
+ fragmentShader = gl.glCreateShader(GL.GL_FRAGMENT_SHADER);
+ program = gl.glCreateProgram();
+ gl.glAttachShader(program, vertexShader);
+ gl.glAttachShader(program, fragmentShader);
+ }
+
+ private void setupBinaryShader(int shader,
+ byte[] shaderData,
+ int binaryFormat) {
+ ByteBuffer buf = ByteBuffer.wrap(shaderData);
+ int[] tmp = new int[1];
+ tmp[0] = shader;
+ GL gl = GLU.getCurrentGL();
+ gl.glShaderBinary(1, tmp, 0, binaryFormat, buf, shaderData.length);
+ }
+
+ private boolean glslLog(int obj, int checkCompile, String op) {
+ boolean success = false;
+
+ GL gl = GLU.getCurrentGL();
+
+ // log output.
+ String str = null;
+ if (checkCompile == GL.GL_COMPILE_STATUS) {
+ int[] len = new int[1];
+ gl.glGetShaderiv(obj, GL.GL_INFO_LOG_LENGTH, len, 0);
+ if (len[0] > 0) {
+ byte[] buf = new byte[len[0]];
+ gl.glGetShaderInfoLog(obj, len[0], null, 0, buf, 0);
+ try {
+ str = new String(buf, 0, buf.length, "US-ASCII");
+ } catch (UnsupportedEncodingException e) {
+ e.printStackTrace();
+ }
+ }
+ } else {
+ // LINK or VALIDATE
+ int[] len = new int[1];
+ gl.glGetProgramiv(obj, GL.GL_INFO_LOG_LENGTH, len, 0);
+ if (len[0] > 0) {
+ byte[] buf = new byte[len[0]];
+ gl.glGetProgramInfoLog(obj, len[0], null, 0, buf, 0);
+ try {
+ str = new String(buf, 0, buf.length, "US-ASCII");
+ } catch (UnsupportedEncodingException e) {
+ e.printStackTrace();
+ }
+ }
+ }
+
+ if (str != null) {
+ System.out.println("--- ");
+ System.out.println(op);
+ System.out.println(" log ---");
+ System.out.println(str);
+ }
+
+ // check the compile / link status.
+ if (checkCompile == GL.GL_COMPILE_STATUS) {
+ int[] status = new int[1];
+
+ gl.glGetShaderiv(obj, checkCompile, status, 0);
+ success = (status[0] != 0);
+ if (!success) {
+ int[] len = new int[1];
+ gl.glGetShaderiv(obj, GL.GL_SHADER_SOURCE_LENGTH, len, 0);
+ if (len[0] > 0) {
+ byte[] buf = new byte[len[0]];
+ gl.glGetShaderSource(obj, len[0], null, 0, buf, 0);
+ try {
+ str = new String(buf, 0, buf.length, "US-ASCII");
+ } catch (UnsupportedEncodingException e) {
+ e.printStackTrace();
+ }
+ if (str != null) {
+ System.out.println("--- ");
+ System.out.println(op);
+ System.out.println(" code ---");
+ System.out.println(str);
+ }
+ }
+ }
+ } else { // LINK or VALIDATE
+ int[] status = new int[1];
+ gl.glGetProgramiv(obj, checkCompile, status, 0);
+ success = (status[0] != 0);
+ }
+
+ if (!success) {
+ System.out.println("--- ");
+ System.out.println(op);
+ System.out.println(" failed");
+ }
+
+ return success;
+ }
+}
--
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