Merge changes I66c184ec,I857659d6

* changes:
  Respect LayerSettings::alpha in Skia-RE for buffer layers
  Support bilinear filtering in Skia-RE
diff --git a/libs/renderengine/skia/SkiaGLRenderEngine.cpp b/libs/renderengine/skia/SkiaGLRenderEngine.cpp
index 07be0b6..579260b 100644
--- a/libs/renderengine/skia/SkiaGLRenderEngine.cpp
+++ b/libs/renderengine/skia/SkiaGLRenderEngine.cpp
@@ -652,7 +652,16 @@
 
             matrix.postConcat(texMatrix);
             matrix.postScale(rotatedBufferWidth, rotatedBufferHeight);
-            sk_sp<SkShader> shader = image->makeShader(matrix);
+            sk_sp<SkShader> shader;
+
+            if (layer->source.buffer.useTextureFiltering) {
+                shader = image->makeShader(SkTileMode::kClamp, SkTileMode::kClamp,
+                                           SkSamplingOptions(
+                                                   {SkFilterMode::kLinear, SkMipmapMode::kNone}),
+                                           &matrix);
+            } else {
+                shader = image->makeShader(matrix);
+            }
 
             if (mUseColorManagement &&
                 needsToneMapping(layer->sourceDataspace, display.outputDataspace)) {
@@ -668,6 +677,8 @@
             } else {
                 paint.setShader(shader);
             }
+            // Make sure to take into the account the alpha set on the layer.
+            paint.setAlphaf(layer->alpha);
         } else {
             ATRACE_NAME("DrawColor");
             const auto color = layer->source.solidColor;