diff --git a/services/surfaceflinger/BufferLayerConsumer.cpp b/services/surfaceflinger/BufferLayerConsumer.cpp
index 9ade402..482de16 100644
--- a/services/surfaceflinger/BufferLayerConsumer.cpp
+++ b/services/surfaceflinger/BufferLayerConsumer.cpp
@@ -416,84 +416,10 @@
         BLC_LOGD("computeCurrentTransformMatrixLocked: "
                  "mCurrentTextureImage is NULL");
     }
-    computeTransformMatrix(mCurrentTransformMatrix, buf,
-                           isEglImageCroppable(mCurrentCrop) ? Rect::EMPTY_RECT : mCurrentCrop,
-                           mCurrentTransform, mFilteringEnabled);
-}
-
-void BufferLayerConsumer::computeTransformMatrix(float outTransform[16],
-                                                 const sp<GraphicBuffer>& buf, const Rect& cropRect,
-                                                 uint32_t transform, bool filtering) {
-    // Transform matrices
-    static const mat4 mtxFlipH(-1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 1, 0, 0, 1);
-    static const mat4 mtxFlipV(1, 0, 0, 0, 0, -1, 0, 0, 0, 0, 1, 0, 0, 1, 0, 1);
-    static const mat4 mtxRot90(0, 1, 0, 0, -1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 1);
-
-    mat4 xform;
-    if (transform & NATIVE_WINDOW_TRANSFORM_FLIP_H) {
-        xform *= mtxFlipH;
-    }
-    if (transform & NATIVE_WINDOW_TRANSFORM_FLIP_V) {
-        xform *= mtxFlipV;
-    }
-    if (transform & NATIVE_WINDOW_TRANSFORM_ROT_90) {
-        xform *= mtxRot90;
-    }
-
-    if (!cropRect.isEmpty()) {
-        float tx = 0.0f, ty = 0.0f, sx = 1.0f, sy = 1.0f;
-        float bufferWidth = buf->getWidth();
-        float bufferHeight = buf->getHeight();
-        float shrinkAmount = 0.0f;
-        if (filtering) {
-            // In order to prevent bilinear sampling beyond the edge of the
-            // crop rectangle we may need to shrink it by 2 texels in each
-            // dimension.  Normally this would just need to take 1/2 a texel
-            // off each end, but because the chroma channels of YUV420 images
-            // are subsampled we may need to shrink the crop region by a whole
-            // texel on each side.
-            switch (buf->getPixelFormat()) {
-                case PIXEL_FORMAT_RGBA_8888:
-                case PIXEL_FORMAT_RGBX_8888:
-                case PIXEL_FORMAT_RGBA_FP16:
-                case PIXEL_FORMAT_RGBA_1010102:
-                case PIXEL_FORMAT_RGB_888:
-                case PIXEL_FORMAT_RGB_565:
-                case PIXEL_FORMAT_BGRA_8888:
-                    // We know there's no subsampling of any channels, so we
-                    // only need to shrink by a half a pixel.
-                    shrinkAmount = 0.5;
-                    break;
-
-                default:
-                    // If we don't recognize the format, we must assume the
-                    // worst case (that we care about), which is YUV420.
-                    shrinkAmount = 1.0;
-                    break;
-            }
-        }
-
-        // Only shrink the dimensions that are not the size of the buffer.
-        if (cropRect.width() < bufferWidth) {
-            tx = (float(cropRect.left) + shrinkAmount) / bufferWidth;
-            sx = (float(cropRect.width()) - (2.0f * shrinkAmount)) / bufferWidth;
-        }
-        if (cropRect.height() < bufferHeight) {
-            ty = (float(bufferHeight - cropRect.bottom) + shrinkAmount) / bufferHeight;
-            sy = (float(cropRect.height()) - (2.0f * shrinkAmount)) / bufferHeight;
-        }
-
-        mat4 crop(sx, 0, 0, 0, 0, sy, 0, 0, 0, 0, 1, 0, tx, ty, 0, 1);
-        xform = crop * xform;
-    }
-
-    // SurfaceFlinger expects the top of its window textures to be at a Y
-    // coordinate of 0, so BufferLayerConsumer must behave the same way.  We don't
-    // want to expose this to applications, however, so we must add an
-    // additional vertical flip to the transform after all the other transforms.
-    xform = mtxFlipV * xform;
-
-    memcpy(outTransform, xform.asArray(), sizeof(xform));
+    GLConsumer::computeTransformMatrix(mCurrentTransformMatrix, buf,
+                                       isEglImageCroppable(mCurrentCrop) ? Rect::EMPTY_RECT
+                                                                         : mCurrentCrop,
+                                       mCurrentTransform, mFilteringEnabled);
 }
 
 Rect BufferLayerConsumer::scaleDownCrop(const Rect& crop, uint32_t bufferWidth,