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diff --git a/dep/g3dlite/source/Image4.cpp b/dep/g3dlite/source/Image4.cpp
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+++ b/dep/g3dlite/source/Image4.cpp
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+/**
+  @file Image4.cpp
+
+  @maintainer Morgan McGuire, http://graphics.cs.williams.edu
+
+  @created 2007-01-31
+  @edited  2008-07-27
+*/
+
+
+#include "G3D/Image4.h"
+#include "G3D/Image4uint8.h"
+#include "G3D/GImage.h"
+#include "G3D/Color3.h"
+#include "G3D/Color3uint8.h"
+#include "G3D/Color1.h"
+#include "G3D/Color1uint8.h"
+#include "G3D/ImageFormat.h"
+
+namespace G3D {
+
+Image4::Image4(int w, int h, WrapMode wrap) : Map2D<Color4, Color4>(w, h, wrap) {
+    setAll(Color4::zero());
+}
+
+
+Image4::Ref Image4::fromGImage(const GImage& im, WrapMode wrap) {
+    switch (im.channels()) {
+    case 1:
+        return fromArray(im.pixel1(), im.width(), im.height(), wrap);
+
+    case 3:
+        return fromArray(im.pixel3(), im.width(), im.height(), wrap);
+
+    case 4:
+        return fromArray(im.pixel4(), im.width(), im.height(), wrap);
+
+    default:
+        debugAssertM(false, "Input GImage must have 1, 3, or 4 channels.");
+        return NULL;
+    }
+}
+
+
+Image4::Ref Image4::fromImage4uint8(const ReferenceCountedPointer<Image4uint8>& im) {
+    Ref out = createEmpty(static_cast<WrapMode>(im->wrapMode()));
+    out->resize(im->width(), im->height());
+
+    int N = im->width() * im->height();
+    const Color4uint8* src = reinterpret_cast<Color4uint8*>(im->getCArray());
+    for (int i = 0; i < N; ++i) {
+        out->data[i] = Color4(src[i]);
+    }
+
+    return out;
+}
+
+
+Image4::Ref Image4::createEmpty(int width, int height, WrapMode wrap) {
+    return new Type(width, height, wrap);
+}
+
+
+Image4::Ref Image4::createEmpty(WrapMode wrap) {
+    return createEmpty(0, 0, wrap);
+}
+
+
+Image4::Ref Image4::fromFile(const std::string& filename, WrapMode wrap, GImage::Format fmt) {
+    Ref out = createEmpty(wrap);
+    out->load(filename);
+    return out;
+}
+
+
+void Image4::load(const std::string& filename, GImage::Format fmt) {
+    copyGImage(GImage(filename, fmt));
+    setChanged(true);
+}
+
+
+Image4::Ref Image4::fromArray(const class Color3uint8* ptr, int w, int h, WrapMode wrap) {
+    Ref out = createEmpty(wrap);
+    out->copyArray(ptr, w, h);
+    return out;
+}
+
+
+Image4::Ref Image4::fromArray(const class Color1* ptr, int w, int h, WrapMode wrap) {
+    Ref out = createEmpty(wrap);
+    out->copyArray(ptr, w, h);
+    return out;
+}
+
+
+Image4::Ref Image4::fromArray(const class Color1uint8* ptr, int w, int h, WrapMode wrap) {
+    Ref out = createEmpty(wrap);
+    out->copyArray(ptr, w, h);
+    return out;
+}
+
+
+Image4::Ref Image4::fromArray(const class Color3* ptr, int w, int h, WrapMode wrap) {
+    Ref out = createEmpty(wrap);
+    out->copyArray(ptr, w, h);
+    return out;
+}
+
+
+Image4::Ref Image4::fromArray(const class Color4uint8* ptr, int w, int h, WrapMode wrap) {
+    Ref out = createEmpty(wrap);
+    out->copyArray(ptr, w, h);
+    return out;
+}
+
+
+Image4::Ref Image4::fromArray(const class Color4* ptr, int w, int h, WrapMode wrap) {
+    Ref out = createEmpty(wrap);
+    out->copyArray(ptr, w, h);
+    return out;
+}
+
+
+void Image4::copyGImage(const GImage& im) {
+    switch (im.channels()) {
+    case 1:
+        copyArray(im.pixel1(), im.width(), im.height());
+        break;
+
+    case 3:
+        copyArray(im.pixel3(), im.width(), im.height());
+        break;
+
+    case 4:
+        copyArray(im.pixel4(), im.width(), im.height());
+        break;
+    } 
+}
+
+
+void Image4::copyArray(const Color4uint8* src, int w, int h) {
+    resize(w, h);
+
+    int N = w * h;
+    Color4* dst = data.getCArray();
+    // Convert int8 -> float
+    for (int i = 0; i < N; ++i) {
+        dst[i] = Color4(src[i]);
+    }
+}
+
+
+void Image4::copyArray(const Color3uint8* src, int w, int h) {
+    resize(w, h);
+
+    int N = w * h;
+    Color4* dst = data.getCArray();
+    
+    // Add alpha and convert
+    for (int i = 0; i < N; ++i) {
+        dst[i] = Color4(Color3(src[i]), 1.0f);
+    }
+}
+
+
+void Image4::copyArray(const Color4* src, int w, int h) {
+    resize(w, h);
+    System::memcpy(getCArray(), src, w * h * sizeof(Color4));
+}
+
+
+void Image4::copyArray(const Color3* src, int w, int h) {
+    resize(w, h);
+
+    int N = w * h;
+    Color4* dst = data.getCArray();
+    
+    // Add alpha
+    for (int i = 0; i < N; ++i) {
+        dst[i] = Color4(src[i], 1.0f);
+    }
+}
+
+
+void Image4::copyArray(const Color1uint8* src, int w, int h) {
+    resize(w, h);
+    int N = w * h;
+
+    Color4* dst = getCArray();
+    for (int i = 0; i < N; ++i) {
+        dst[i].r = dst[i].g = dst[i].b = Color1(src[i]).value;
+        dst[i].a = 1.0f;
+    }
+}
+
+
+void Image4::copyArray(const Color1* src, int w, int h) {
+    resize(w, h);
+    int N = w * h;
+
+    Color4* dst = getCArray();
+    for (int i = 0; i < N; ++i) {
+        dst[i].r = dst[i].g = dst[i].b = src[i].value;
+        dst[i].a = 1.0f;
+    }
+}
+
+
+/** Saves in any of the formats supported by G3D::GImage. */
+void Image4::save(const std::string& filename, GImage::Format fmt) {
+    GImage im(width(), height(), 4);
+
+    int N = im.width() * im.height();
+    Color4uint8* dst = im.pixel4();
+    for (int i = 0; i < N; ++i) {
+        dst[i] = Color4uint8(data[i]);
+    }
+    
+    im.save(filename, fmt);
+}
+
+const ImageFormat* Image4::format() const {
+    return ImageFormat::RGBA32F();
+}
+
+} // G3D