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1 files changed, 64 insertions, 0 deletions

diff --git a/indra/llwindow/llwindowmesaheadless.cpp b/indra/llwindow/llwindowmesaheadless.cpp
new file mode 100644
index 0000000000..c924bb1efa
--- /dev/null
+++ b/indra/llwindow/llwindowmesaheadless.cpp
@@ -0,0 +1,64 @@
+/** 
+ * @file llwindowmesaheadless.cpp
+ * @brief Platform-dependent implementation of llwindow
+ *
+ * Copyright (c) 2001-$CurrentYear$, Linden Research, Inc.
+ * $License$
+ */
+
+#if LL_MESA_HEADLESS
+
+#include "linden_common.h"
+#include "indra_constants.h"
+
+#include "llwindowmesaheadless.h"
+#include "llgl.h"
+#include "llglheaders.h"
+
+#define MESA_CHANNEL_TYPE GL_UNSIGNED_SHORT
+#define MESA_CHANNEL_SIZE 2
+
+U16 *gMesaBuffer = NULL;
+
+//
+// LLWindowMesaHeadless
+//
+LLWindowMesaHeadless::LLWindowMesaHeadless(char *title, char *name, S32 x, S32 y, S32 width, S32 height,
+							 U32 flags,  BOOL fullscreen, BOOL clearBg,
+							 BOOL disable_vsync, BOOL use_gl, BOOL ignore_pixel_depth)
+	: LLWindow(fullscreen, flags)
+{
+	if (use_gl)
+	{
+		llinfos << "MESA Init" << llendl;
+		mMesaContext = OSMesaCreateContextExt( GL_RGBA, 32, 0, 0, NULL );
+
+		/* Allocate the image buffer */
+		mMesaBuffer = new unsigned char [width * height * 4 * MESA_CHANNEL_SIZE];
+		llassert(mMesaBuffer);
+
+		gMesaBuffer = (U16*)mMesaBuffer;
+
+		/* Bind the buffer to the context and make it current */
+		if (!OSMesaMakeCurrent( mMesaContext, mMesaBuffer, MESA_CHANNEL_TYPE, width, height ))
+		{
+			llerrs << "MESA: OSMesaMakeCurrent failed!" << llendl;
+		}
+
+		llverify(gGLManager.initGL());
+	}
+}
+
+
+LLWindowMesaHeadless::~LLWindowMesaHeadless()
+{
+	delete mMesaBuffer;
+	OSMesaDestroyContext( mMesaContext );
+}
+
+void LLWindowMesaHeadless::swapBuffers()
+{
+	glFinish();
+}
+
+#endif