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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 "film.h"
#include "kernel_types.h"
#include "util_string.h"
#include "util_thread.h"
#include "util_types.h"
CCL_NAMESPACE_BEGIN
class Device;
struct float4;
/* Buffer Parameters
* Size of render buffer and how it fits in the full image (border render). */
class BufferParams {
public:
/* width/height of the physical buffer */
int width;
int height;
/* offset into and width/height of the full buffer */
int full_x;
int full_y;
int full_width;
int full_height;
/* passes */
vector<Pass> passes;
/* functions */
BufferParams();
void get_offset_stride(int& offset, int& stride);
bool modified(const BufferParams& params);
void add_pass(PassType type);
int get_passes_size();
};
/* Render Buffers */
class RenderBuffers {
public:
/* buffer parameters */
BufferParams params;
/* float buffer */
device_vector<float> buffer;
/* random number generator state */
device_vector<uint> rng_state;
RenderBuffers(Device *device);
~RenderBuffers();
void reset(Device *device, BufferParams& params);
bool copy_from_device();
bool get_pass_rect(PassType type, float exposure, int sample, int components, float *pixels);
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 parameters */
BufferParams params;
/* 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;
/* draw alpha channel? */
bool transparent;
/* byte buffer for tonemapped result */
device_vector<uchar4> rgba;
DisplayBuffer(Device *device);
~DisplayBuffer();
void reset(Device *device, BufferParams& params);
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;
};
/* Render Tile
* Rendering task on a buffer */
class RenderTile {
public:
int x, y, w, h;
int start_sample;
int num_samples;
int sample;
int resolution;
int offset;
int stride;
device_ptr buffer;
device_ptr rng_state;
device_ptr rgba;
RenderBuffers *buffers;
RenderTile();
};
CCL_NAMESPACE_END
#endif /* __BUFFERS_H__ */
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