Use GL_LINEAR scaling instead of GL_NEAREST.

content/common/gpu/media/dxva_video_decode_accelerator.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/common/gpu/media/dxva_video_decode_accelerator.h"
 
 #if !defined(OS_WIN)
 #error This file should only be built on Windows.
 #endif   // !defined(OS_WIN)
 
@@ skipping 305 matching lines @@
       use_rgb_ ? D3DFMT_X8R8G8B8 : D3DFMT_A8R8G8B8);
   RETURN_ON_HR_FAILURE(hr, "Device does not support format converision", false);
 
   // This function currently executes in the context of IPC handlers in the
   // GPU process which ensures that there is always an OpenGL context.
   GLint current_texture = 0;
   glGetIntegerv(GL_TEXTURE_BINDING_2D, &current_texture);
 
   glBindTexture(GL_TEXTURE_2D, picture_buffer_.texture_id());
 
-  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 
   base::win::ScopedComPtr<IDirect3DSurface9> d3d_surface;
   hr = decoding_texture_->GetSurfaceLevel(0, d3d_surface.Receive());
   RETURN_ON_HR_FAILURE(hr, "Failed to get surface from texture", false);
 
   hr = decoder.device_->StretchRect(
       dest_surface, NULL, d3d_surface, NULL, D3DTEXF_NONE);
   RETURN_ON_HR_FAILURE(hr, "Colorspace conversion via StretchRect failed",
                         false);
 
@@ skipping 18 matching lines @@
   int iterations = 0;
   while ((decoder.query_->GetData(NULL, 0, D3DGETDATA_FLUSH) == S_FALSE) &&
          ++iterations < kMaxIterationsForD3DFlush) {
     Sleep(1);  // Poor-man's Yield().
   }
   EGLDisplay egl_display = gfx::GLSurfaceEGL::GetHardwareDisplay();
   eglBindTexImage(
       egl_display,
       decoding_surface_,
       EGL_BACK_BUFFER);
-  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
   glBindTexture(GL_TEXTURE_2D, current_texture);
   return true;
 }
 
 DXVAVideoDecodeAccelerator::PendingSampleInfo::PendingSampleInfo(
     int32 buffer_id, IMFSample* sample)
     : input_buffer_id(buffer_id) {
   output_sample.Attach(sample);
 }
 
@@ skipping 842 matching lines @@
     int32 picture_buffer_id) {
   OutputBuffers::iterator it = stale_output_picture_buffers_.find(
       picture_buffer_id);
   DCHECK(it != stale_output_picture_buffers_.end());
   DVLOG(1) << "Dismissing picture id: " << it->second->id();
   client_->DismissPictureBuffer(it->second->id());
   stale_output_picture_buffers_.erase(it);
 }
 
 }  // namespace content