1 files changed, 94 insertions, 0 deletions
diff --git a/intern/cycles/render/buffers.h b/intern/cycles/render/buffers.h
new file mode 100644
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+++ b/intern/cycles/render/buffers.h
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+/*
+ * Copyright 2011, Blender Foundation.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __BUFFERS_H__
+#define __BUFFERS_H__
+
+#include "device_memory.h"
+
+#include "util_string.h"
+#include "util_thread.h"
+#include "util_types.h"
+
+CCL_NAMESPACE_BEGIN
+
+class Device;
+class float4;
+
+/* Render Buffers */
+
+class RenderBuffers {
+public:
+	/* buffer dimensions */
+	int width, height;
+	/* float buffer */
+	device_vector<float4> buffer;
+	/* random number generator state */
+	device_vector<uint> rng_state;
+	/* mutex, must be locked manually by callers */
+	thread_mutex mutex;
+
+	RenderBuffers(Device *device);
+	~RenderBuffers();
+
+	void reset(Device *device, int width, int height);
+
+protected:
+	void device_free();
+
+	Device *device;
+};
+
+/* Display Buffer
+ *
+ * The buffer used for drawing during render, filled by tonemapping the render
+ * buffers and converting to uchar4 storage. */
+
+class DisplayBuffer {
+public:
+	/* buffer dimensions */
+	int width, height;
+	/* dimensions for how much of the buffer is actually ready for display.
+	   with progressive render we can be using only a subset of the buffer.
+	   if these are zero, it means nothing can be drawn yet */
+	int draw_width, draw_height;
+	/* byte buffer for tonemapped result */
+	device_vector<uchar4> rgba;
+	/* mutex, must be locked manually by callers */
+	thread_mutex mutex;
+
+	DisplayBuffer(Device *device);
+	~DisplayBuffer();
+
+	void reset(Device *device, int width, int height);
+	void write(Device *device, const string& filename);
+
+	void draw_set(int width, int height);
+	void draw(Device *device);
+	bool draw_ready();
+
+protected:
+	void device_free();
+
+	Device *device;
+};
+
+CCL_NAMESPACE_END
+
+#endif /* __BUFFERS_H__ */
+