1 files changed, 58 insertions, 0 deletions
diff --git a/gpu/command_buffer/service/gl_context_osmesa.h b/gpu/command_buffer/service/gl_context_osmesa.h
new file mode 100644
index 0000000..06b14ca
--- /dev/null
+++ b/gpu/command_buffer/service/gl_context_osmesa.h
@@ -0,0 +1,58 @@
+// Copyright (c) 2010 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.
+
+#ifndef GPU_COMMAND_BUFFER_SERVICE_GL_CONTEXT_OSMESA_H_
+#define GPU_COMMAND_BUFFER_SERVICE_GL_CONTEXT_OSMESA_H_
+
+// Ensure that gl_utils.h is included before any GL headers.
+#include "gpu/command_buffer/service/gl_utils.h"
+
+#include "base/scoped_ptr.h"
+#include "gfx/size.h"
+#include "gpu/command_buffer/service/gl_context.h"
+
+namespace gpu {
+
+// Encapsulates an OSMesa OpenGL context that uses software rendering.
+class OSMesaGLContext : public GLContext {
+ public:
+  OSMesaGLContext();
+  virtual ~OSMesaGLContext();
+
+  // Initialize an OSMesa GL context with the default 1 x 1 initial size.
+  bool Initialize(void* shared_handle);
+
+  // Implement GLContext.
+  virtual void Destroy();
+  virtual bool MakeCurrent();
+  virtual bool IsCurrent();
+  virtual bool IsOffscreen();
+  virtual void SwapBuffers();
+  virtual gfx::Size GetSize();
+  virtual void* GetHandle();
+
+  // Resize the back buffer, preserving the old content. Does nothing if the
+  // size is unchanged.
+  void Resize(const gfx::Size& new_size);
+
+  const void* buffer() const {
+    return buffer_.get();
+  }
+
+ protected:
+  bool InitializeCommon();
+
+ private:
+#if !defined(UNIT_TEST)
+  gfx::Size size_;
+  scoped_array<int32> buffer_;
+  OSMesaContext context_;
+#endif
+
+  DISALLOW_COPY_AND_ASSIGN(OSMesaGLContext);
+};
+
+}  // namespace gpu
+
+#endif  // GPU_COMMAND_BUFFER_SERVICE_GL_CONTEXT_OSMESA_H_