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blender/intern/cycles/kernel/kernel_camera.h

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Cycles render engine, initial commit. This is the engine itself, blender modifications and build instructions will follow later. 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
2011-04-27 11:58:34 +00:00
/*
* 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.
*/
CCL_NAMESPACE_BEGIN
/* Perspective Camera */
Cycles: tweaks to properties and nodes * Passes renamed to samples * Camera lens radius renamed to aperature size/blades/rotation * Glass and fresnel nodes input is now index of refraction * Glossy and velvet fresnel socket removed * Mix/add closure node renamed to mix/add shader node * Blend weight node added for shader mixing weights There is some version patching code for reading existing files, but it's not perfect, so shaders may work a bit different.
2011-09-16 13:14:02 +00:00
__device float2 camera_sample_aperture(KernelGlobals *kg, float u, float v)
{
float blades = kernel_data.cam.blades;
if(blades == 0.0f) {
/* sample disk */
return concentric_sample_disk(u, v);
}
else {
/* sample polygon */
float rotation = kernel_data.cam.bladesrotation;
return regular_polygon_sample(blades, rotation, u, v);
}
}
Cycles render engine, initial commit. This is the engine itself, blender modifications and build instructions will follow later. 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
2011-04-27 11:58:34 +00:00
__device void camera_sample_perspective(KernelGlobals *kg, float raster_x, float raster_y, float lens_u, float lens_v, Ray *ray)
{
/* create ray form raster position */
Transform rastertocamera = kernel_data.cam.rastertocamera;
Fix #30966: cycles nan mesh vertices got set to (0, 0, 0), now remove them instead.
2012-04-16 08:35:21 +00:00
float3 Pcamera = transform_perspective(&rastertocamera, make_float3(raster_x, raster_y, 0.0f));
Cycles render engine, initial commit. This is the engine itself, blender modifications and build instructions will follow later. 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
2011-04-27 11:58:34 +00:00
ray->P = make_float3(0.0f, 0.0f, 0.0f);
ray->D = Pcamera;
/* modify ray for depth of field */
Cycles: tweaks to properties and nodes * Passes renamed to samples * Camera lens radius renamed to aperature size/blades/rotation * Glass and fresnel nodes input is now index of refraction * Glossy and velvet fresnel socket removed * Mix/add closure node renamed to mix/add shader node * Blend weight node added for shader mixing weights There is some version patching code for reading existing files, but it's not perfect, so shaders may work a bit different.
2011-09-16 13:14:02 +00:00
float aperturesize = kernel_data.cam.aperturesize;
Cycles render engine, initial commit. This is the engine itself, blender modifications and build instructions will follow later. 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
2011-04-27 11:58:34 +00:00
Cycles: tweaks to properties and nodes * Passes renamed to samples * Camera lens radius renamed to aperature size/blades/rotation * Glass and fresnel nodes input is now index of refraction * Glossy and velvet fresnel socket removed * Mix/add closure node renamed to mix/add shader node * Blend weight node added for shader mixing weights There is some version patching code for reading existing files, but it's not perfect, so shaders may work a bit different.
2011-09-16 13:14:02 +00:00
if(aperturesize > 0.0f) {
/* sample point on aperture */
float2 lensuv = camera_sample_aperture(kg, lens_u, lens_v)*aperturesize;
Cycles render engine, initial commit. This is the engine itself, blender modifications and build instructions will follow later. 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
2011-04-27 11:58:34 +00:00
/* compute point on plane of focus */
float ft = kernel_data.cam.focaldistance/ray->D.z;
float3 Pfocus = ray->P + ray->D*ft;
/* update ray for effect of lens */
ray->P = make_float3(lensuv.x, lensuv.y, 0.0f);
ray->D = normalize(Pfocus - ray->P);
}
/* transform ray from camera to world */
Transform cameratoworld = kernel_data.cam.cameratoworld;
Cycles: camera motion blur enabled. Still more work needed to get object motion blur ready.
2012-10-09 18:37:14 +00:00
#ifdef __CAMERA_MOTION__
Fix #31168: cycles mask layer should only affect objects for camera rays. Fix: texture coordinate normal output was not correct, still changed under object transform.
2012-05-02 09:33:45 +00:00
if(kernel_data.cam.have_motion)
Fix #32900: object motion blur not working on the GPU. To make this work I disabled motion blurring of scale animation, probably not a big loss in practice since it's not so common to animate this, can be added back later.
2012-11-29 00:43:50 +00:00
transform_motion_interpolate(&cameratoworld, (const DecompMotionTransform*)&kernel_data.cam.motion, ray->time);
Cycles: support for motion vector and UV passes. Most of the changes are related to adding support for motion data throughout the code. There's some code for actual camera/object motion blur raytracing but it's unfinished (it badly slows down the raytracing kernel even when the option is turned off), so that code it disabled still. Motion vector export from Blender tries to avoid computing derived meshes when the mesh does not have a deforming modifier, and it also won't store motion vectors for every vertex if only the object or camera is moving.
2012-04-30 12:49:26 +00:00
#endif
Fix #30966: cycles nan mesh vertices got set to (0, 0, 0), now remove them instead.
2012-04-16 08:35:21 +00:00
ray->P = transform_point(&cameratoworld, ray->P);
Cycles render engine, initial commit. This is the engine itself, blender modifications and build instructions will follow later. 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
2011-04-27 11:58:34 +00:00
ray->D = transform_direction(&cameratoworld, ray->D);
ray->D = normalize(ray->D);
#ifdef __RAY_DIFFERENTIALS__
/* ray differential */
float3 Ddiff = transform_direction(&cameratoworld, Pcamera);
ray->dP.dx = make_float3(0.0f, 0.0f, 0.0f);
ray->dP.dy = make_float3(0.0f, 0.0f, 0.0f);
Cycles: avoid using float3 in kernel constant memory, just so we're sure alignment is working compatible between cpu and gpu.
2011-12-20 12:25:45 +00:00
ray->dD.dx = normalize(Ddiff + float4_to_float3(kernel_data.cam.dx)) - normalize(Ddiff);
ray->dD.dy = normalize(Ddiff + float4_to_float3(kernel_data.cam.dy)) - normalize(Ddiff);
Cycles render engine, initial commit. This is the engine itself, blender modifications and build instructions will follow later. 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
2011-04-27 11:58:34 +00:00
#endif
#ifdef __CAMERA_CLIPPING__
/* clipping */
ray->P += kernel_data.cam.nearclip*ray->D;
ray->t = kernel_data.cam.cliplength;
#else
ray->t = FLT_MAX;
#endif
}
/* Orthographic Camera */
__device void camera_sample_orthographic(KernelGlobals *kg, float raster_x, float raster_y, Ray *ray)
{
/* create ray form raster position */
Transform rastertocamera = kernel_data.cam.rastertocamera;
Fix #30966: cycles nan mesh vertices got set to (0, 0, 0), now remove them instead.
2012-04-16 08:35:21 +00:00
float3 Pcamera = transform_perspective(&rastertocamera, make_float3(raster_x, raster_y, 0.0f));
Cycles render engine, initial commit. This is the engine itself, blender modifications and build instructions will follow later. 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
2011-04-27 11:58:34 +00:00
ray->P = Pcamera;
ray->D = make_float3(0.0f, 0.0f, 1.0f);
/* transform ray from camera to world */
Transform cameratoworld = kernel_data.cam.cameratoworld;
Cycles: camera motion blur enabled. Still more work needed to get object motion blur ready.
2012-10-09 18:37:14 +00:00
#ifdef __CAMERA_MOTION__
Fix #31168: cycles mask layer should only affect objects for camera rays. Fix: texture coordinate normal output was not correct, still changed under object transform.
2012-05-02 09:33:45 +00:00
if(kernel_data.cam.have_motion)
Fix #32900: object motion blur not working on the GPU. To make this work I disabled motion blurring of scale animation, probably not a big loss in practice since it's not so common to animate this, can be added back later.
2012-11-29 00:43:50 +00:00
transform_motion_interpolate(&cameratoworld, (const DecompMotionTransform*)&kernel_data.cam.motion, ray->time);
Cycles: support for motion vector and UV passes. Most of the changes are related to adding support for motion data throughout the code. There's some code for actual camera/object motion blur raytracing but it's unfinished (it badly slows down the raytracing kernel even when the option is turned off), so that code it disabled still. Motion vector export from Blender tries to avoid computing derived meshes when the mesh does not have a deforming modifier, and it also won't store motion vectors for every vertex if only the object or camera is moving.
2012-04-30 12:49:26 +00:00
#endif
Fix #30966: cycles nan mesh vertices got set to (0, 0, 0), now remove them instead.
2012-04-16 08:35:21 +00:00
ray->P = transform_point(&cameratoworld, ray->P);
Cycles render engine, initial commit. This is the engine itself, blender modifications and build instructions will follow later. 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
2011-04-27 11:58:34 +00:00
ray->D = transform_direction(&cameratoworld, ray->D);
ray->D = normalize(ray->D);
#ifdef __RAY_DIFFERENTIALS__
/* ray differential */
Cycles: avoid using float3 in kernel constant memory, just so we're sure alignment is working compatible between cpu and gpu.
2011-12-20 12:25:45 +00:00
ray->dP.dx = float4_to_float3(kernel_data.cam.dx);
ray->dP.dy = float4_to_float3(kernel_data.cam.dy);
Cycles render engine, initial commit. This is the engine itself, blender modifications and build instructions will follow later. 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
2011-04-27 11:58:34 +00:00
ray->dD.dx = make_float3(0.0f, 0.0f, 0.0f);
ray->dD.dy = make_float3(0.0f, 0.0f, 0.0f);
#endif
#ifdef __CAMERA_CLIPPING__
/* clipping */
ray->t = kernel_data.cam.cliplength;
#else
ray->t = FLT_MAX;
#endif
}
Fisheye Camera for Cycles For sample images see: http://www.dalaifelinto.com/?p=399 (equisolid) http://www.dalaifelinto.com/?p=389 (equidistant) The 'use_panorama' option is now part of a new Camera type: 'Panorama'. Created two other panorama cameras: - Equisolid: most of lens in the market simulate this lens - e.g. Nikon, Canon, ...) this works as a real lens up to an extent. The final result takes the sensor dimensions into account also. .:. to simulate a Nikon DX2S with a 10.5mm lens do: sensor: 23.7 x 15.7 fisheye lens: 10.5 fisheye fov: 180 render dimensions: 4288 x 2848 - Equidistant: this is not a real lens model. Although the old equidistant lens simulate this lens. The result is always as a circular fisheye that takes the whole sensor (in other words, it doesn't take the sensor into consideration). This is perfect for fulldomes ;) For the UI we have 10 to 360 as soft values and 10 to 3600 as hard values (because we can). Reference material: http://www.hdrlabs.com/tutorials/downloads_files/HDRI%20for%20CGI.pdf http://www.bobatkins.com/photography/technical/field_of_view.html Note, this is not a real simulation of the light path through the lens. The ideal solution would be this: https://graphics.stanford.edu/wikis/cs348b-11/Assignment3 http://www.graphics.stanford.edu/papers/camera/ Thanks Brecht for the fix, suggestions and code review. Kudos for the dome community for keeping me stimulated on the topic since 2009 ;) Patch partly implemented during lab time at VisGraf, IMPA - Rio de Janeiro.
2012-05-04 16:20:51 +00:00
/* Panorama Camera */
Cycles: support for camera rendering an environment map with equirectangular environment map, by enabling the Panorama option in the camera. http://wiki.blender.org/index.php/Doc:2.6/Manual/Render/Cycles/Camera#Panorama The focal length or sensor settings are not used, the UI can be tweaked still to communicate this, also panorama should probably become a proper camera type like perspective or ortho.
2012-02-28 16:44:54 +00:00
Fix cycles panorama camera not working with depth of field, patch by Daniel M. Basso, thanks!
2012-09-17 11:25:29 +00:00
__device void camera_sample_panorama(KernelGlobals *kg, float raster_x, float raster_y, float lens_u, float lens_v, Ray *ray)
Cycles: support for camera rendering an environment map with equirectangular environment map, by enabling the Panorama option in the camera. http://wiki.blender.org/index.php/Doc:2.6/Manual/Render/Cycles/Camera#Panorama The focal length or sensor settings are not used, the UI can be tweaked still to communicate this, also panorama should probably become a proper camera type like perspective or ortho.
2012-02-28 16:44:54 +00:00
{
Transform rastertocamera = kernel_data.cam.rastertocamera;
Fix #30966: cycles nan mesh vertices got set to (0, 0, 0), now remove them instead.
2012-04-16 08:35:21 +00:00
float3 Pcamera = transform_perspective(&rastertocamera, make_float3(raster_x, raster_y, 0.0f));
Cycles: support for camera rendering an environment map with equirectangular environment map, by enabling the Panorama option in the camera. http://wiki.blender.org/index.php/Doc:2.6/Manual/Render/Cycles/Camera#Panorama The focal length or sensor settings are not used, the UI can be tweaked still to communicate this, also panorama should probably become a proper camera type like perspective or ortho.
2012-02-28 16:44:54 +00:00
/* create ray form raster position */
Cycles: remove a few usages of double, to fix opencl warnings.
2012-04-30 10:03:13 +00:00
ray->P = make_float3(0.0f, 0.0f, 0.0f);
Fisheye Camera for Cycles For sample images see: http://www.dalaifelinto.com/?p=399 (equisolid) http://www.dalaifelinto.com/?p=389 (equidistant) The 'use_panorama' option is now part of a new Camera type: 'Panorama'. Created two other panorama cameras: - Equisolid: most of lens in the market simulate this lens - e.g. Nikon, Canon, ...) this works as a real lens up to an extent. The final result takes the sensor dimensions into account also. .:. to simulate a Nikon DX2S with a 10.5mm lens do: sensor: 23.7 x 15.7 fisheye lens: 10.5 fisheye fov: 180 render dimensions: 4288 x 2848 - Equidistant: this is not a real lens model. Although the old equidistant lens simulate this lens. The result is always as a circular fisheye that takes the whole sensor (in other words, it doesn't take the sensor into consideration). This is perfect for fulldomes ;) For the UI we have 10 to 360 as soft values and 10 to 3600 as hard values (because we can). Reference material: http://www.hdrlabs.com/tutorials/downloads_files/HDRI%20for%20CGI.pdf http://www.bobatkins.com/photography/technical/field_of_view.html Note, this is not a real simulation of the light path through the lens. The ideal solution would be this: https://graphics.stanford.edu/wikis/cs348b-11/Assignment3 http://www.graphics.stanford.edu/papers/camera/ Thanks Brecht for the fix, suggestions and code review. Kudos for the dome community for keeping me stimulated on the topic since 2009 ;) Patch partly implemented during lab time at VisGraf, IMPA - Rio de Janeiro.
2012-05-04 16:20:51 +00:00
#ifdef __CAMERA_CLIPPING__
/* clipping */
ray->t = kernel_data.cam.cliplength;
#else
ray->t = FLT_MAX;
#endif
Cycles: minor refactoring of fisheye code to fit code style.
2012-05-05 19:44:35 +00:00
ray->D = panorama_to_direction(kg, Pcamera.x, Pcamera.y);
Fix cycles panorama camera not working with depth of field, patch by Daniel M. Basso, thanks!
2012-09-17 11:25:29 +00:00
/* modify ray for depth of field */
float aperturesize = kernel_data.cam.aperturesize;
if(aperturesize > 0.0f) {
/* sample point on aperture */
float2 lensuv = camera_sample_aperture(kg, lens_u, lens_v)*aperturesize;
/* compute point on plane of focus */
float3 D = normalize(ray->D);
float3 Pfocus = D * kernel_data.cam.focaldistance;
/* calculate orthonormal coordinates perpendicular to D */
float3 U, V;
make_orthonormals(D, &U, &V);
/* update ray for effect of lens */
ray->P = U * lensuv.x + V * lensuv.y;
ray->D = normalize(Pfocus - ray->P);
}
Cycles: minor refactoring of fisheye code to fit code style.
2012-05-05 19:44:35 +00:00
/* indicates ray should not receive any light, outside of the lens */
if(len_squared(ray->D) == 0.0f) {
ray->t = 0.0f;
return;
}
Cycles: support for camera rendering an environment map with equirectangular environment map, by enabling the Panorama option in the camera. http://wiki.blender.org/index.php/Doc:2.6/Manual/Render/Cycles/Camera#Panorama The focal length or sensor settings are not used, the UI can be tweaked still to communicate this, also panorama should probably become a proper camera type like perspective or ortho.
2012-02-28 16:44:54 +00:00
/* transform ray from camera to world */
Transform cameratoworld = kernel_data.cam.cameratoworld;
Cycles: camera motion blur enabled. Still more work needed to get object motion blur ready.
2012-10-09 18:37:14 +00:00
#ifdef __CAMERA_MOTION__
Fix #31168: cycles mask layer should only affect objects for camera rays. Fix: texture coordinate normal output was not correct, still changed under object transform.
2012-05-02 09:33:45 +00:00
if(kernel_data.cam.have_motion)
Fix #32900: object motion blur not working on the GPU. To make this work I disabled motion blurring of scale animation, probably not a big loss in practice since it's not so common to animate this, can be added back later.
2012-11-29 00:43:50 +00:00
transform_motion_interpolate(&cameratoworld, (const DecompMotionTransform*)&kernel_data.cam.motion, ray->time);
Cycles: support for motion vector and UV passes. Most of the changes are related to adding support for motion data throughout the code. There's some code for actual camera/object motion blur raytracing but it's unfinished (it badly slows down the raytracing kernel even when the option is turned off), so that code it disabled still. Motion vector export from Blender tries to avoid computing derived meshes when the mesh does not have a deforming modifier, and it also won't store motion vectors for every vertex if only the object or camera is moving.
2012-04-30 12:49:26 +00:00
#endif
Fix #30966: cycles nan mesh vertices got set to (0, 0, 0), now remove them instead.
2012-04-16 08:35:21 +00:00
ray->P = transform_point(&cameratoworld, ray->P);
Cycles: support for camera rendering an environment map with equirectangular environment map, by enabling the Panorama option in the camera. http://wiki.blender.org/index.php/Doc:2.6/Manual/Render/Cycles/Camera#Panorama The focal length or sensor settings are not used, the UI can be tweaked still to communicate this, also panorama should probably become a proper camera type like perspective or ortho.
2012-02-28 16:44:54 +00:00
ray->D = transform_direction(&cameratoworld, ray->D);
ray->D = normalize(ray->D);
#ifdef __RAY_DIFFERENTIALS__
/* ray differential */
ray->dP.dx = make_float3(0.0f, 0.0f, 0.0f);
ray->dP.dy = make_float3(0.0f, 0.0f, 0.0f);
Fix #30966: cycles nan mesh vertices got set to (0, 0, 0), now remove them instead.
2012-04-16 08:35:21 +00:00
Pcamera = transform_perspective(&rastertocamera, make_float3(raster_x + 1.0f, raster_y, 0.0f));
Cycles: minor refactoring of fisheye code to fit code style.
2012-05-05 19:44:35 +00:00
ray->dD.dx = normalize(transform_direction(&cameratoworld, panorama_to_direction(kg, Pcamera.x, Pcamera.y))) - ray->D;
Cycles: support for camera rendering an environment map with equirectangular environment map, by enabling the Panorama option in the camera. http://wiki.blender.org/index.php/Doc:2.6/Manual/Render/Cycles/Camera#Panorama The focal length or sensor settings are not used, the UI can be tweaked still to communicate this, also panorama should probably become a proper camera type like perspective or ortho.
2012-02-28 16:44:54 +00:00
Fix #30966: cycles nan mesh vertices got set to (0, 0, 0), now remove them instead.
2012-04-16 08:35:21 +00:00
Pcamera = transform_perspective(&rastertocamera, make_float3(raster_x, raster_y + 1.0f, 0.0f));
Cycles: minor refactoring of fisheye code to fit code style.
2012-05-05 19:44:35 +00:00
ray->dD.dy = normalize(transform_direction(&cameratoworld, panorama_to_direction(kg, Pcamera.x, Pcamera.y))) - ray->D;
Cycles: support for camera rendering an environment map with equirectangular environment map, by enabling the Panorama option in the camera. http://wiki.blender.org/index.php/Doc:2.6/Manual/Render/Cycles/Camera#Panorama The focal length or sensor settings are not used, the UI can be tweaked still to communicate this, also panorama should probably become a proper camera type like perspective or ortho.
2012-02-28 16:44:54 +00:00
#endif
}
Cycles render engine, initial commit. This is the engine itself, blender modifications and build instructions will follow later. 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
2011-04-27 11:58:34 +00:00
/* Common */
Cycles: support for motion vector and UV passes. Most of the changes are related to adding support for motion data throughout the code. There's some code for actual camera/object motion blur raytracing but it's unfinished (it badly slows down the raytracing kernel even when the option is turned off), so that code it disabled still. Motion vector export from Blender tries to avoid computing derived meshes when the mesh does not have a deforming modifier, and it also won't store motion vectors for every vertex if only the object or camera is moving.
2012-04-30 12:49:26 +00:00
__device void camera_sample(KernelGlobals *kg, int x, int y, float filter_u, float filter_v,
float lens_u, float lens_v, float time, Ray *ray)
Cycles render engine, initial commit. This is the engine itself, blender modifications and build instructions will follow later. 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
2011-04-27 11:58:34 +00:00
{
/* pixel filter */
Cycles: OpenCL tweaks * Reduce kernel arguments size, helps compile for apple nvidia. * Fix use of unitialized variable in displace kernel. * Use build flags in opencl kernel md5 hash. * Reorganize code for kernel feature #defines a bit.
2011-11-22 13:15:19 +00:00
float raster_x = x + kernel_tex_interp(__filter_table, filter_u, FILTER_TABLE_SIZE);
float raster_y = y + kernel_tex_interp(__filter_table, filter_v, FILTER_TABLE_SIZE);
Cycles render engine, initial commit. This is the engine itself, blender modifications and build instructions will follow later. 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
2011-04-27 11:58:34 +00:00
Cycles: camera motion blur enabled. Still more work needed to get object motion blur ready.
2012-10-09 18:37:14 +00:00
#ifdef __CAMERA_MOTION__
Cycles render engine, initial commit. This is the engine itself, blender modifications and build instructions will follow later. 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
2011-04-27 11:58:34 +00:00
/* motion blur */
Cycles: support for motion vector and UV passes. Most of the changes are related to adding support for motion data throughout the code. There's some code for actual camera/object motion blur raytracing but it's unfinished (it badly slows down the raytracing kernel even when the option is turned off), so that code it disabled still. Motion vector export from Blender tries to avoid computing derived meshes when the mesh does not have a deforming modifier, and it also won't store motion vectors for every vertex if only the object or camera is moving.
2012-04-30 12:49:26 +00:00
if(kernel_data.cam.shuttertime == 0.0f)
ray->time = TIME_INVALID;
else
Attempts to fix CUDA issues on sm 2.0 cards, still no luck getting motion blur working, but this should make it not crash. Also fix for wrong shutter time, should have been shorter.
2012-10-17 22:48:29 +00:00
ray->time = 0.5f + 0.5f*(time - 0.5f)*kernel_data.cam.shuttertime;
Cycles: support for motion vector and UV passes. Most of the changes are related to adding support for motion data throughout the code. There's some code for actual camera/object motion blur raytracing but it's unfinished (it badly slows down the raytracing kernel even when the option is turned off), so that code it disabled still. Motion vector export from Blender tries to avoid computing derived meshes when the mesh does not have a deforming modifier, and it also won't store motion vectors for every vertex if only the object or camera is moving.
2012-04-30 12:49:26 +00:00
#endif
Cycles render engine, initial commit. This is the engine itself, blender modifications and build instructions will follow later. 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
2011-04-27 11:58:34 +00:00
/* sample */
Cycles: support for camera rendering an environment map with equirectangular environment map, by enabling the Panorama option in the camera. http://wiki.blender.org/index.php/Doc:2.6/Manual/Render/Cycles/Camera#Panorama The focal length or sensor settings are not used, the UI can be tweaked still to communicate this, also panorama should probably become a proper camera type like perspective or ortho.
2012-02-28 16:44:54 +00:00
if(kernel_data.cam.type == CAMERA_PERSPECTIVE)
camera_sample_perspective(kg, raster_x, raster_y, lens_u, lens_v, ray);
else if(kernel_data.cam.type == CAMERA_ORTHOGRAPHIC)
Cycles render engine, initial commit. This is the engine itself, blender modifications and build instructions will follow later. 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
2011-04-27 11:58:34 +00:00
camera_sample_orthographic(kg, raster_x, raster_y, ray);
else
Fix cycles panorama camera not working with depth of field, patch by Daniel M. Basso, thanks!
2012-09-17 11:25:29 +00:00
camera_sample_panorama(kg, raster_x, raster_y, lens_u, lens_v, ray);
Cycles render engine, initial commit. This is the engine itself, blender modifications and build instructions will follow later. 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
2011-04-27 11:58:34 +00:00
}
Fix #33256: cycles Z pass for orthographic camera was not right, now is more useful for e.g. fog in compositing.
2012-11-21 13:00:57 +00:00
/* Utilities */
__device_inline float camera_distance(KernelGlobals *kg, float3 P)
{
Transform cameratoworld = kernel_data.cam.cameratoworld;
float3 camP = make_float3(cameratoworld.x.w, cameratoworld.y.w, cameratoworld.z.w);
if(kernel_data.cam.type == CAMERA_ORTHOGRAPHIC) {
float3 camD = make_float3(cameratoworld.x.z, cameratoworld.y.z, cameratoworld.z.z);
return fabsf(dot((P - camP), camD));
}
else
return len(P - camP);
}
Cycles render engine, initial commit. This is the engine itself, blender modifications and build instructions will follow later. 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
2011-04-27 11:58:34 +00:00
CCL_NAMESPACE_END
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