forked from bartvdbraak/blender
da376e0237
Cycles uses code from some great open source projects, many thanks them: * BVH building and traversal code from NVidia's "Understanding the Efficiency of Ray Traversal on GPUs": http://code.google.com/p/understanding-the-efficiency-of-ray-traversal-on-gpus/ * Open Shading Language for a large part of the shading system: http://code.google.com/p/openshadinglanguage/ * Blender for procedural textures and a few other nodes. * Approximate Catmull Clark subdivision from NVidia Mesh tools: http://code.google.com/p/nvidia-mesh-tools/ * Sobol direction vectors from: http://web.maths.unsw.edu.au/~fkuo/sobol/ * Film response functions from: http://www.cs.columbia.edu/CAVE/software/softlib/dorf.php
178 lines
3.5 KiB
C++
178 lines
3.5 KiB
C++
/*
|
|
* 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.
|
|
*/
|
|
|
|
#include <stdlib.h>
|
|
|
|
#include "buffers.h"
|
|
#include "device.h"
|
|
|
|
#include "util_debug.h"
|
|
#include "util_hash.h"
|
|
#include "util_image.h"
|
|
#include "util_opengl.h"
|
|
#include "util_time.h"
|
|
#include "util_types.h"
|
|
|
|
CCL_NAMESPACE_BEGIN
|
|
|
|
/* Render Buffers */
|
|
|
|
RenderBuffers::RenderBuffers(Device *device_)
|
|
{
|
|
device = device_;
|
|
width = 0;
|
|
height = 0;
|
|
}
|
|
|
|
RenderBuffers::~RenderBuffers()
|
|
{
|
|
device_free();
|
|
}
|
|
|
|
void RenderBuffers::device_free()
|
|
{
|
|
if(buffer.device_pointer) {
|
|
device->mem_free(buffer);
|
|
buffer.clear();
|
|
}
|
|
|
|
if(rng_state.device_pointer) {
|
|
device->mem_free(rng_state);
|
|
rng_state.clear();
|
|
}
|
|
}
|
|
|
|
void RenderBuffers::reset(Device *device, int width_, int height_)
|
|
{
|
|
width = width_;
|
|
height = height_;
|
|
|
|
/* free existing buffers */
|
|
device_free();
|
|
|
|
/* allocate buffer */
|
|
buffer.resize(width, height);
|
|
device->mem_alloc(buffer, MEM_READ_WRITE);
|
|
device->mem_zero(buffer);
|
|
|
|
/* allocate rng state */
|
|
rng_state.resize(width, height);
|
|
|
|
uint *init_state = rng_state.resize(width, height);
|
|
int x, y;
|
|
|
|
for(x=0; x<width; x++)
|
|
for(y=0; y<height; y++)
|
|
init_state[x + y*width] = hash_int_2d(x, y);
|
|
|
|
device->mem_alloc(rng_state, MEM_READ_WRITE);
|
|
device->mem_copy_to(rng_state);
|
|
}
|
|
|
|
/* Display Buffer */
|
|
|
|
DisplayBuffer::DisplayBuffer(Device *device_)
|
|
{
|
|
device = device_;
|
|
width = 0;
|
|
height = 0;
|
|
draw_width = 0;
|
|
draw_height = 0;
|
|
}
|
|
|
|
DisplayBuffer::~DisplayBuffer()
|
|
{
|
|
device_free();
|
|
}
|
|
|
|
void DisplayBuffer::device_free()
|
|
{
|
|
if(rgba.device_pointer) {
|
|
device->pixels_free(rgba);
|
|
rgba.clear();
|
|
}
|
|
}
|
|
|
|
void DisplayBuffer::reset(Device *device, int width_, int height_)
|
|
{
|
|
draw_width = 0;
|
|
draw_height = 0;
|
|
|
|
width = width_;
|
|
height = height_;
|
|
|
|
/* free existing buffers */
|
|
device_free();
|
|
|
|
/* allocate display pixels */
|
|
rgba.resize(width, height);
|
|
device->pixels_alloc(rgba);
|
|
}
|
|
|
|
void DisplayBuffer::draw_set(int width_, int height_)
|
|
{
|
|
assert(width_ <= width && height_ <= height);
|
|
|
|
draw_width = width_;
|
|
draw_height = height_;
|
|
}
|
|
|
|
void DisplayBuffer::draw(Device *device)
|
|
{
|
|
if(draw_width != 0 && draw_height != 0)
|
|
device->draw_pixels(rgba, 0, draw_width, draw_height, width, height);
|
|
}
|
|
|
|
bool DisplayBuffer::draw_ready()
|
|
{
|
|
return (draw_width != 0 && draw_height != 0);
|
|
}
|
|
|
|
void DisplayBuffer::write(Device *device, const string& filename)
|
|
{
|
|
int w = draw_width;
|
|
int h = draw_height;
|
|
|
|
if(w == 0 || h == 0)
|
|
return;
|
|
|
|
/* read buffer from device */
|
|
device->pixels_copy_from(rgba, 0, w, h);
|
|
|
|
/* write image */
|
|
ImageOutput *out = ImageOutput::create(filename);
|
|
ImageSpec spec(w, h, 4, TypeDesc::UINT8);
|
|
int scanlinesize = w*4*sizeof(uchar);
|
|
|
|
out->open(filename, spec);
|
|
|
|
/* conversion for different top/bottom convention */
|
|
out->write_image(TypeDesc::UINT8,
|
|
(uchar*)rgba.data_pointer + (h-1)*scanlinesize,
|
|
AutoStride,
|
|
-scanlinesize,
|
|
AutoStride);
|
|
|
|
out->close();
|
|
|
|
delete out;
|
|
}
|
|
|
|
CCL_NAMESPACE_END
|
|
|