Implement Matrix Palette extension.

Adds support for formerly-unimplemented methods:

glCurrentPaletteMatrixOES
glLoadPaletteFromModelViewMatrixOES
glMatrixIndexPointerOES
glWeightPointerOES

The bulk of the changes are related to implementing the two PointerOES
methods, which are implemented pretty much the same way as the existing
Pointer methods were implemented.

This change also changes the way glPointSizePointerOES is implemented,
making it act like all the other Pointer methods. (Previously it was
not handling non-direct-buffer arguments correctly.)

Fixes bug 2308625 "Support matrix palette skinning
in JSR239 and related APIs"

Also updated GLLogWraper to fix two bugs in GLLogWrapper that were
discovered while testing matrix palette skinning support:

a) Handle trying to print the contents of null-but-enabled buffers.
(It's not legal to draw with null-but-enabled buffers, and
in fact some OpenGL drivers will crash if you try to render in this
state, but there's no reason the GLLogWrapper should crash while trying
to debug this situation.

b) Don't read off the end of a vertex buffer with non-zero position when
printing the entire contents of the vertex buffer. Now we only print from
the current position to the end of the buffer.

4 files changed, 113 insertions, 41 deletions

diff --git a/opengl/java/android/opengl/GLES11.java b/opengl/java/android/opengl/GLES11.java
index 3399af7..1ca179b 100644
--- a/opengl/java/android/opengl/GLES11.java
+++ b/opengl/java/android/opengl/GLES11.java
@@ -150,6 +150,7 @@ public class GLES11 extends GLES10 {
 	    _nativeClassInit();
     }
 
+    private static Buffer _pointSizePointerOES;
     // C function void glBindBuffer ( GLenum target, GLuint buffer )
 
     public static native void glBindBuffer(
@@ -596,12 +597,31 @@ public class GLES11 extends GLES10 {
 
     // C function void glPointSizePointerOES ( GLenum type, GLsizei stride, const GLvoid *pointer )
 
-    public static native void glPointSizePointerOES(
+    private static native void glPointSizePointerOESBounds(
         int type,
         int stride,
-        java.nio.Buffer pointer
+        java.nio.Buffer pointer,
+        int remaining
     );
 
+    public static void glPointSizePointerOES(
+        int type,
+        int stride,
+        java.nio.Buffer pointer
+    ) {
+        glPointSizePointerOESBounds(
+            type,
+            stride,
+            pointer,
+            pointer.remaining()
+        );
+        if (((type == GL_FLOAT) ||
+             (type == GL_FIXED)) &&
+            (stride >= 0)) {
+            _pointSizePointerOES = pointer;
+        }
+    }
+
     // C function void glTexCoordPointer ( GLint size, GLenum type, GLsizei stride, GLint offset )
 
     public static native void glTexCoordPointer(
diff --git a/opengl/java/android/opengl/GLES11Ext.java b/opengl/java/android/opengl/GLES11Ext.java
index 4384e9e..25d5467 100644
--- a/opengl/java/android/opengl/GLES11Ext.java
+++ b/opengl/java/android/opengl/GLES11Ext.java
@@ -19,6 +19,8 @@
 
 package android.opengl;
 
+import java.nio.Buffer;
+
 public class GLES11Ext {
     public static final int GL_BLEND_EQUATION_RGB_OES                               = 0x8009;
     public static final int GL_BLEND_EQUATION_ALPHA_OES                             = 0x883D;
@@ -129,6 +131,12 @@ public class GLES11Ext {
 	    _nativeClassInit();
     }
     
+    private static final int GL_BYTE = GLES10.GL_BYTE;
+    private static final int GL_FIXED = GLES10.GL_FIXED;
+    private static final int GL_FLOAT = GLES10.GL_FLOAT;
+    private static final int GL_SHORT = GLES10.GL_SHORT;
+    
+    private static Buffer _matrixIndexPointerOES;
     // C function void glBlendEquationSeparateOES ( GLenum modeRGB, GLenum modeAlpha )
 
     public static native void glBlendEquationSeparateOES(
@@ -866,22 +874,64 @@ public class GLES11Ext {
 
     // C function void glMatrixIndexPointerOES ( GLint size, GLenum type, GLsizei stride, const GLvoid *pointer )
 
-    public static native void glMatrixIndexPointerOES(
+    private static native void glMatrixIndexPointerOESBounds(
         int size,
         int type,
         int stride,
-        java.nio.Buffer pointer
+        java.nio.Buffer pointer,
+        int remaining
     );
 
+    public static void glMatrixIndexPointerOES(
+        int size,
+        int type,
+        int stride,
+        java.nio.Buffer pointer
+    ) {
+        glMatrixIndexPointerOESBounds(
+            size,
+            type,
+            stride,
+            pointer,
+            pointer.remaining()
+        );
+        if (((size == 2) ||
+             (size == 3) ||
+             (size == 4)) &&
+            ((type == GL_FLOAT) ||
+             (type == GL_BYTE) ||
+             (type == GL_SHORT) ||
+             (type == GL_FIXED)) &&
+            (stride >= 0)) {
+            _matrixIndexPointerOES = pointer;
+        }
+    }
+
     // C function void glWeightPointerOES ( GLint size, GLenum type, GLsizei stride, const GLvoid *pointer )
 
-    public static native void glWeightPointerOES(
+    private static native void glWeightPointerOESBounds(
         int size,
         int type,
         int stride,
-        java.nio.Buffer pointer
+        java.nio.Buffer pointer,
+        int remaining
     );
 
+    public static void glWeightPointerOES(
+        int size,
+        int type,
+        int stride,
+        java.nio.Buffer pointer
+    ) {
+        glWeightPointerOESBounds(
+            size,
+            type,
+            stride,
+            pointer,
+            pointer.remaining()
+        );
+    }
+
     // C function void glDepthRangefOES ( GLclampf zNear, GLclampf zFar )
 
     public static native void glDepthRangefOES(
diff --git a/opengl/java/android/opengl/GLES20.java b/opengl/java/android/opengl/GLES20.java
index 01e82de..b8aac0e 100644
--- a/opengl/java/android/opengl/GLES20.java
+++ b/opengl/java/android/opengl/GLES20.java
@@ -2,16 +2,16 @@
 **
 ** Copyright 2009, The Android Open Source Project
 **
-** Licensed under the Apache License, Version 2.0 (the "License");
-** you may not use this file except in compliance with the License.
-** You may obtain a copy of the License at
+** Licensed under the Apache License, Version 2.0 (the "License"); 
+** you may not use this file except in compliance with the License. 
+** You may obtain a copy of the License at 
 **
-**     http://www.apache.org/licenses/LICENSE-2.0
+**     http://www.apache.org/licenses/LICENSE-2.0 
 **
-** Unless required by applicable law or agreed to in writing, software
-** distributed under the License is distributed on an "AS IS" BASIS,
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-** See the License for the specific language governing permissions and
+** Unless required by applicable law or agreed to in writing, software 
+** distributed under the License is distributed on an "AS IS" BASIS, 
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
+** See the License for the specific language governing permissions and 
 ** limitations under the License.
 */
 
@@ -19,8 +19,7 @@
 
 package android.opengl;
 
-/** OpenGL ES 2.0. This class exposes the core OpenGL ES 2.0 APIs.
- * All the methods are static.
+/** OpenGL ES 2.0
  */
 public class GLES20 {
     public static final int GL_ACTIVE_TEXTURE                          = 0x84E0;
@@ -49,7 +48,7 @@ public class GLES20 {
     public static final int GL_SRC_ALPHA_SATURATE                      = 0x0308;
     public static final int GL_FUNC_ADD                                = 0x8006;
     public static final int GL_BLEND_EQUATION                          = 0x8009;
-    public static final int GL_BLEND_EQUATION_RGB                      = 0x8009;
+    public static final int GL_BLEND_EQUATION_RGB                      = 0x8009;   /* same as BLEND_EQUATION */
     public static final int GL_BLEND_EQUATION_ALPHA                    = 0x883D;
     public static final int GL_FUNC_SUBTRACT                           = 0x800A;
     public static final int GL_FUNC_REVERSE_SUBTRACT                   = 0x800B;
@@ -328,7 +327,7 @@ public class GLES20 {
 
     native private static void _nativeClassInit();
     static {
-        _nativeClassInit();
+	    _nativeClassInit();
     }
     // C function void glActiveTexture ( GLenum texture )
 
@@ -980,7 +979,7 @@ public class GLES20 {
     );
 
     // C function void glGetProgramInfoLog( GLuint program, GLsizei maxLength, GLsizei * length,
-     //     GLchar * infoLog);
+ 	//     GLchar * infoLog);
 
     public static native String glGetProgramInfoLog(
         int program
@@ -1020,7 +1019,7 @@ public class GLES20 {
     );
 
     // C function void glGetShaderInfoLog( GLuint shader, GLsizei maxLength, GLsizei * length,
-     //     GLchar * infoLog);
+ 	//     GLchar * infoLog);
 
     public static native String glGetShaderInfoLog(
         int shader
diff --git a/opengl/java/android/opengl/GLLogWrapper.java b/opengl/java/android/opengl/GLLogWrapper.java
index 97a6424..6e97f67 100644
--- a/opengl/java/android/opengl/GLLogWrapper.java
+++ b/opengl/java/android/opengl/GLLogWrapper.java
@@ -932,83 +932,83 @@ class GLLogWrapper extends GLWrapperBase {
         boolean convertWholeBuffer = (byteCount < 0);
         if (input instanceof ByteBuffer) {
             ByteBuffer input2 = (ByteBuffer) input;
+            int position = input2.position();
             if (convertWholeBuffer) {
-                byteCount = input2.limit();
+                byteCount = input2.limit() - position;
             }
             result = ByteBuffer.allocate(byteCount).order(input2.order());
-            int position = input2.position();
             for (int i = 0; i < byteCount; i++) {
                 result.put(input2.get());
             }
             input2.position(position);
         } else if (input instanceof CharBuffer) {
             CharBuffer input2 = (CharBuffer) input;
+            int position = input2.position();
             if (convertWholeBuffer) {
-                byteCount = input2.limit() * 2;
+                byteCount = (input2.limit() - position) * 2;
             }
             result = ByteBuffer.allocate(byteCount).order(input2.order());
             CharBuffer result2 = result.asCharBuffer();
-            int position = input2.position();
             for (int i = 0; i < byteCount / 2; i++) {
                 result2.put(input2.get());
             }
             input2.position(position);
         } else if (input instanceof ShortBuffer) {
             ShortBuffer input2 = (ShortBuffer) input;
+            int position = input2.position();
             if (convertWholeBuffer) {
-                byteCount = input2.limit() * 2;
+                byteCount = (input2.limit() - position)* 2;
             }
             result = ByteBuffer.allocate(byteCount).order(input2.order());
             ShortBuffer result2 = result.asShortBuffer();
-            int position = input2.position();
             for (int i = 0; i < byteCount / 2; i++) {
                 result2.put(input2.get());
             }
             input2.position(position);
         } else if (input instanceof IntBuffer) {
             IntBuffer input2 = (IntBuffer) input;
+            int position = input2.position();
             if (convertWholeBuffer) {
-                byteCount = input2.limit() * 4;
+                byteCount = (input2.limit() - position) * 4;
             }
             result = ByteBuffer.allocate(byteCount).order(input2.order());
             IntBuffer result2 = result.asIntBuffer();
-            int position = input2.position();
             for (int i = 0; i < byteCount / 4; i++) {
                 result2.put(input2.get());
             }
             input2.position(position);
         } else if (input instanceof FloatBuffer) {
             FloatBuffer input2 = (FloatBuffer) input;
+            int position = input2.position();
             if (convertWholeBuffer) {
-                byteCount = input2.limit() * 4;
+                byteCount = (input2.limit() - position) * 4;
             }
             result = ByteBuffer.allocate(byteCount).order(input2.order());
             FloatBuffer result2 = result.asFloatBuffer();
-            int position = input2.position();
             for (int i = 0; i < byteCount / 4; i++) {
                 result2.put(input2.get());
             }
             input2.position(position);
         } else if (input instanceof DoubleBuffer) {
             DoubleBuffer input2 = (DoubleBuffer) input;
+            int position = input2.position();
             if (convertWholeBuffer) {
-                byteCount = input2.limit() * 8;
+                byteCount = (input2.limit() - position) * 8;
             }
             result = ByteBuffer.allocate(byteCount).order(input2.order());
             DoubleBuffer result2 = result.asDoubleBuffer();
-            int position = input2.position();
             for (int i = 0; i < byteCount / 8; i++) {
                 result2.put(input2.get());
             }
             input2.position(position);
         } else if (input instanceof LongBuffer) {
             LongBuffer input2 = (LongBuffer) input;
+            int position = input2.position();
             if (convertWholeBuffer) {
-                byteCount = input2.limit() * 8;
+                byteCount = (input2.limit() - position) * 8;
             }
             result = ByteBuffer.allocate(byteCount).order(input2.order());
             LongBuffer result2 = result.asLongBuffer();
-            int position = input2.position();
             for (int i = 0; i < byteCount / 8; i++) {
                 result2.put(input2.get());
             }
@@ -1064,8 +1064,8 @@ class GLLogWrapper extends GLWrapperBase {
         }
         builder.append(" ");
         builder.append(name + ":{");
-        if (pointer == null) {
-            builder.append("undefined");
+        if (pointer == null || pointer.mTempByteBuffer == null ) {
+            builder.append("undefined }");
             return;
         }
         if (pointer.mStride < 0) {
@@ -3464,6 +3464,9 @@ class GLLogWrapper extends GLWrapperBase {
         public Buffer mPointer;
         public ByteBuffer mTempByteBuffer; // Only valid during glDrawXXX calls
 
+        public PointerInfo() {
+        }
+
         public PointerInfo(int size, int type, int stride, Buffer pointer) {
             mSize = size;
             mType = type;
@@ -3493,7 +3496,7 @@ class GLLogWrapper extends GLWrapperBase {
         }
 
         public void bindByteBuffer() {
-            mTempByteBuffer = toByteBuffer(-1, mPointer);
+            mTempByteBuffer = mPointer == null ? null : toByteBuffer(-1, mPointer);
         }
 
         public void unbindByteBuffer() {
@@ -3505,10 +3508,10 @@ class GLLogWrapper extends GLWrapperBase {
     private boolean mLogArgumentNames;
     private int mArgCount;
 
-    private PointerInfo mColorPointer;
-    private PointerInfo mNormalPointer;
-    private PointerInfo mTexCoordPointer;
-    private PointerInfo mVertexPointer;
+    private PointerInfo mColorPointer = new PointerInfo();
+    private PointerInfo mNormalPointer = new PointerInfo();
+    private PointerInfo mTexCoordPointer = new PointerInfo();
+    private PointerInfo mVertexPointer = new PointerInfo();
 
     boolean mColorArrayEnabled;
     boolean mNormalArrayEnabled;