1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/.gitignore	Mon Dec 28 10:27:23 2015 +0200
     1.3 @@ -0,0 +1,7 @@
     1.4 +*.o
     1.5 +*.d
     1.6 +*.swp
     1.7 +*.obj
     1.8 +*.mtl
     1.9 +*.ppm
    1.10 +clray

     2.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     2.2 +++ b/.hgignore	Mon Dec 28 10:27:23 2015 +0200
     2.3 @@ -0,0 +1,7 @@
     2.4 +\.o$
     2.5 +\.d$
     2.6 +\.swp$
     2.7 +\.obj$
     2.8 +\.mtl$
     2.9 +\.ppm$
    2.10 +^clray$

     3.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     3.2 +++ b/COPYING	Mon Dec 28 10:27:23 2015 +0200
     3.3 @@ -0,0 +1,674 @@
     3.4 +                    GNU GENERAL PUBLIC LICENSE
     3.5 +                       Version 3, 29 June 2007
     3.6 +
     3.7 + Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
     3.8 + Everyone is permitted to copy and distribute verbatim copies
     3.9 + of this license document, but changing it is not allowed.
    3.10 +
    3.11 +                            Preamble
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    3.13 +  The GNU General Public License is a free, copyleft license for
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    3.16 +  The licenses for most software and other practical works are designed
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    3.21 +GNU General Public License for most of our software; it applies also to
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    3.25 +  When we speak of free software, we are referring to freedom, not
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    3.53 +  Some devices are designed to deny users access to install or run
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    3.74 +                       TERMS AND CONDITIONS
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    3.76 +  0. Definitions.
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    3.78 +  "This License" refers to version 3 of the GNU General Public License.
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    3.80 +  "Copyright" also means copyright-like laws that apply to other kinds of
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    3.83 +  "The Program" refers to any copyrightable work licensed under this
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   3.154 +  The Corresponding Source for a work in source code form is that
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   3.185 +measure under any applicable law fulfilling obligations under article
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   3.190 +  When you convey a covered work, you waive any legal power to forbid
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   3.198 +  4. Conveying Verbatim Copies.
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   3.208 +  You may charge any price or no price for each copy that you convey,
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   3.220 +    b) The work must carry prominent notices stating that it is
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   3.225 +    c) You must license the entire work, as a whole, under this
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   3.229 +    regardless of how they are packaged.  This License gives no
   3.230 +    permission to license the work in any other way, but it does not
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   3.233 +    d) If the work has interactive user interfaces, each must display
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   3.238 +  A compilation of a covered work with other separate and independent
   3.239 +works, which are not by their nature extensions of the covered work,
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   3.242 +"aggregate" if the compilation and its resulting copyright are not
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   3.244 +beyond what the individual works permit.  Inclusion of a covered work
   3.245 +in an aggregate does not cause this License to apply to the other
   3.246 +parts of the aggregate.
   3.247 +
   3.248 +  6. Conveying Non-Source Forms.
   3.249 +
   3.250 +  You may convey a covered work in object code form under the terms
   3.251 +of sections 4 and 5, provided that you also convey the
   3.252 +machine-readable Corresponding Source under the terms of this License,
   3.253 +in one of these ways:
   3.254 +
   3.255 +    a) Convey the object code in, or embodied in, a physical product
   3.256 +    (including a physical distribution medium), accompanied by the
   3.257 +    Corresponding Source fixed on a durable physical medium
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   3.259 +
   3.260 +    b) Convey the object code in, or embodied in, a physical product
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   3.262 +    written offer, valid for at least three years and valid for as
   3.263 +    long as you offer spare parts or customer support for that product
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   3.272 +    c) Convey individual copies of the object code with a copy of the
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   3.278 +    d) Convey the object code by offering access from a designated
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   3.291 +    e) Convey the object code using peer-to-peer transmission, provided
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   3.296 +  A separable portion of the object code, whose source code is excluded
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   3.300 +  A "User Product" is either (1) a "consumer product", which means any
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   3.313 +  "Installation Information" for a User Product means any methods,
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   3.321 +  If you convey an object code work under this section in, or with, or
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   3.332 +  The requirement to provide Installation Information does not include a
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   3.340 +  Corresponding Source conveyed, and Installation Information provided,
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   3.346 +  7. Additional Terms.
   3.347 +
   3.348 +  "Additional permissions" are terms that supplement the terms of this
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   3.357 +  When you convey a copy of a covered work, you may at your option
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   3.364 +  Notwithstanding any other provision of this License, for material you
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   3.368 +    a) Disclaiming warranty or limiting liability differently from the
   3.369 +    terms of sections 15 and 16 of this License; or
   3.370 +
   3.371 +    b) Requiring preservation of specified reasonable legal notices or
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   3.406 +  Additional terms, permissive or non-permissive, may be stated in the
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   3.408 +the above requirements apply either way.
   3.409 +
   3.410 +  8. Termination.
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   3.412 +  You may not propagate or modify a covered work except as expressly
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   3.418 +  However, if you cease all violation of this License, then your
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   3.425 +  Moreover, your license from a particular copyright holder is
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   3.432 +  Termination of your rights under this section does not terminate the
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   3.438 +  9. Acceptance Not Required for Having Copies.
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   3.440 +  You are not required to accept this License in order to receive or
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   3.451 +  Each time you convey a covered work, the recipient automatically
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   3.456 +  An "entity transaction" is a transaction transferring control of an
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   3.462 +give under the previous paragraph, plus a right to possession of the
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   3.464 +the predecessor has it or can get it with reasonable efforts.
   3.465 +
   3.466 +  You may not impose any further restrictions on the exercise of the
   3.467 +rights granted or affirmed under this License.  For example, you may
   3.468 +not impose a license fee, royalty, or other charge for exercise of
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   3.470 +(including a cross-claim or counterclaim in a lawsuit) alleging that
   3.471 +any patent claim is infringed by making, using, selling, offering for
   3.472 +sale, or importing the Program or any portion of it.
   3.473 +
   3.474 +  11. Patents.
   3.475 +
   3.476 +  A "contributor" is a copyright holder who authorizes use under this
   3.477 +License of the Program or a work on which the Program is based.  The
   3.478 +work thus licensed is called the contributor's "contributor version".
   3.479 +
   3.480 +  A contributor's "essential patent claims" are all patent claims
   3.481 +owned or controlled by the contributor, whether already acquired or
   3.482 +hereafter acquired, that would be infringed by some manner, permitted
   3.483 +by this License, of making, using, or selling its contributor version,
   3.484 +but do not include claims that would be infringed only as a
   3.485 +consequence of further modification of the contributor version.  For
   3.486 +purposes of this definition, "control" includes the right to grant
   3.487 +patent sublicenses in a manner consistent with the requirements of
   3.488 +this License.
   3.489 +
   3.490 +  Each contributor grants you a non-exclusive, worldwide, royalty-free
   3.491 +patent license under the contributor's essential patent claims, to
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   3.494 +
   3.495 +  In the following three paragraphs, a "patent license" is any express
   3.496 +agreement or commitment, however denominated, not to enforce a patent
   3.497 +(such as an express permission to practice a patent or covenant not to
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   3.500 +patent against the party.
   3.501 +
   3.502 +  If you convey a covered work, knowingly relying on a patent license,
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   3.507 +available, or (2) arrange to deprive yourself of the benefit of the
   3.508 +patent license for this particular work, or (3) arrange, in a manner
   3.509 +consistent with the requirements of this License, to extend the patent
   3.510 +license to downstream recipients.  "Knowingly relying" means you have
   3.511 +actual knowledge that, but for the patent license, your conveying the
   3.512 +covered work in a country, or your recipient's use of the covered work
   3.513 +in a country, would infringe one or more identifiable patents in that
   3.514 +country that you have reason to believe are valid.
   3.515 +
   3.516 +  If, pursuant to or in connection with a single transaction or
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   3.519 +receiving the covered work authorizing them to use, propagate, modify
   3.520 +or convey a specific copy of the covered work, then the patent license
   3.521 +you grant is automatically extended to all recipients of the covered
   3.522 +work and works based on it.
   3.523 +
   3.524 +  A patent license is "discriminatory" if it does not include within
   3.525 +the scope of its coverage, prohibits the exercise of, or is
   3.526 +conditioned on the non-exercise of one or more of the rights that are
   3.527 +specifically granted under this License.  You may not convey a covered
   3.528 +work if you are a party to an arrangement with a third party that is
   3.529 +in the business of distributing software, under which you make payment
   3.530 +to the third party based on the extent of your activity of conveying
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   3.532 +parties who would receive the covered work from you, a discriminatory
   3.533 +patent license (a) in connection with copies of the covered work
   3.534 +conveyed by you (or copies made from those copies), or (b) primarily
   3.535 +for and in connection with specific products or compilations that
   3.536 +contain the covered work, unless you entered into that arrangement,
   3.537 +or that patent license was granted, prior to 28 March 2007.
   3.538 +
   3.539 +  Nothing in this License shall be construed as excluding or limiting
   3.540 +any implied license or other defenses to infringement that may
   3.541 +otherwise be available to you under applicable patent law.
   3.542 +
   3.543 +  12. No Surrender of Others' Freedom.
   3.544 +
   3.545 +  If conditions are imposed on you (whether by court order, agreement or
   3.546 +otherwise) that contradict the conditions of this License, they do not
   3.547 +excuse you from the conditions of this License.  If you cannot convey a
   3.548 +covered work so as to satisfy simultaneously your obligations under this
   3.549 +License and any other pertinent obligations, then as a consequence you may
   3.550 +not convey it at all.  For example, if you agree to terms that obligate you
   3.551 +to collect a royalty for further conveying from those to whom you convey
   3.552 +the Program, the only way you could satisfy both those terms and this
   3.553 +License would be to refrain entirely from conveying the Program.
   3.554 +
   3.555 +  13. Use with the GNU Affero General Public License.
   3.556 +
   3.557 +  Notwithstanding any other provision of this License, you have
   3.558 +permission to link or combine any covered work with a work licensed
   3.559 +under version 3 of the GNU Affero General Public License into a single
   3.560 +combined work, and to convey the resulting work.  The terms of this
   3.561 +License will continue to apply to the part which is the covered work,
   3.562 +but the special requirements of the GNU Affero General Public License,
   3.563 +section 13, concerning interaction through a network will apply to the
   3.564 +combination as such.
   3.565 +
   3.566 +  14. Revised Versions of this License.
   3.567 +
   3.568 +  The Free Software Foundation may publish revised and/or new versions of
   3.569 +the GNU General Public License from time to time.  Such new versions will
   3.570 +be similar in spirit to the present version, but may differ in detail to
   3.571 +address new problems or concerns.
   3.572 +
   3.573 +  Each version is given a distinguishing version number.  If the
   3.574 +Program specifies that a certain numbered version of the GNU General
   3.575 +Public License "or any later version" applies to it, you have the
   3.576 +option of following the terms and conditions either of that numbered
   3.577 +version or of any later version published by the Free Software
   3.578 +Foundation.  If the Program does not specify a version number of the
   3.579 +GNU General Public License, you may choose any version ever published
   3.580 +by the Free Software Foundation.
   3.581 +
   3.582 +  If the Program specifies that a proxy can decide which future
   3.583 +versions of the GNU General Public License can be used, that proxy's
   3.584 +public statement of acceptance of a version permanently authorizes you
   3.585 +to choose that version for the Program.
   3.586 +
   3.587 +  Later license versions may give you additional or different
   3.588 +permissions.  However, no additional obligations are imposed on any
   3.589 +author or copyright holder as a result of your choosing to follow a
   3.590 +later version.
   3.591 +
   3.592 +  15. Disclaimer of Warranty.
   3.593 +
   3.594 +  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
   3.595 +APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
   3.596 +HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
   3.597 +OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
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   3.601 +ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
   3.602 +
   3.603 +  16. Limitation of Liability.
   3.604 +
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   3.606 +WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
   3.607 +THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
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   3.611 +PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
   3.612 +EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
   3.613 +SUCH DAMAGES.
   3.614 +
   3.615 +  17. Interpretation of Sections 15 and 16.
   3.616 +
   3.617 +  If the disclaimer of warranty and limitation of liability provided
   3.618 +above cannot be given local legal effect according to their terms,
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   3.620 +an absolute waiver of all civil liability in connection with the
   3.621 +Program, unless a warranty or assumption of liability accompanies a
   3.622 +copy of the Program in return for a fee.
   3.623 +
   3.624 +                     END OF TERMS AND CONDITIONS
   3.625 +
   3.626 +            How to Apply These Terms to Your New Programs
   3.627 +
   3.628 +  If you develop a new program, and you want it to be of the greatest
   3.629 +possible use to the public, the best way to achieve this is to make it
   3.630 +free software which everyone can redistribute and change under these terms.
   3.631 +
   3.632 +  To do so, attach the following notices to the program.  It is safest
   3.633 +to attach them to the start of each source file to most effectively
   3.634 +state the exclusion of warranty; and each file should have at least
   3.635 +the "copyright" line and a pointer to where the full notice is found.
   3.636 +
   3.637 +    <one line to give the program's name and a brief idea of what it does.>
   3.638 +    Copyright (C) <year>  <name of author>
   3.639 +
   3.640 +    This program is free software: you can redistribute it and/or modify
   3.641 +    it under the terms of the GNU General Public License as published by
   3.642 +    the Free Software Foundation, either version 3 of the License, or
   3.643 +    (at your option) any later version.
   3.644 +
   3.645 +    This program is distributed in the hope that it will be useful,
   3.646 +    but WITHOUT ANY WARRANTY; without even the implied warranty of
   3.647 +    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   3.648 +    GNU General Public License for more details.
   3.649 +
   3.650 +    You should have received a copy of the GNU General Public License
   3.651 +    along with this program.  If not, see <http://www.gnu.org/licenses/>.
   3.652 +
   3.653 +Also add information on how to contact you by electronic and paper mail.
   3.654 +
   3.655 +  If the program does terminal interaction, make it output a short
   3.656 +notice like this when it starts in an interactive mode:
   3.657 +
   3.658 +    <program>  Copyright (C) <year>  <name of author>
   3.659 +    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
   3.660 +    This is free software, and you are welcome to redistribute it
   3.661 +    under certain conditions; type `show c' for details.
   3.662 +
   3.663 +The hypothetical commands `show w' and `show c' should show the appropriate
   3.664 +parts of the General Public License.  Of course, your program's commands
   3.665 +might be different; for a GUI interface, you would use an "about box".
   3.666 +
   3.667 +  You should also get your employer (if you work as a programmer) or school,
   3.668 +if any, to sign a "copyright disclaimer" for the program, if necessary.
   3.669 +For more information on this, and how to apply and follow the GNU GPL, see
   3.670 +<http://www.gnu.org/licenses/>.
   3.671 +
   3.672 +  The GNU General Public License does not permit incorporating your program
   3.673 +into proprietary programs.  If your program is a subroutine library, you
   3.674 +may consider it more useful to permit linking proprietary applications with
   3.675 +the library.  If this is what you want to do, use the GNU Lesser General
   3.676 +Public License instead of this License.  But first, please read
   3.677 +<http://www.gnu.org/philosophy/why-not-lgpl.html>.

     4.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     4.2 +++ b/README.rst	Mon Dec 28 10:27:23 2015 +0200
     4.3 @@ -0,0 +1,37 @@
     4.4 +Realtime GPU (OpenCL) polygon mesh raytracer
     4.5 +============================================
     4.6 +
     4.7 +About
     4.8 +-----
     4.9 +Clray is an experimental realtime GPU raytracer with OpenCL. It renders polygon
    4.10 +mesh scenes loaded from obj files (with minor extensions to the material
    4.11 +description format), using a kd-tree constructed with the surface area heuristic
    4.12 +(SAH) for ray-test acceleration.
    4.13 +
    4.14 +If you want to try clray, a few test scenes can be found at:
    4.15 +http://nuclear.mutantstargoat.com/sw/clray/clray_test_scenes.tar.gz
    4.16 +
    4.17 +License
    4.18 +-------
    4.19 +Copyright (C) John Tsiombikas <nuclear@member.fsf.org>
    4.20 +
    4.21 +Clray is free software; feel free to use, modify, and/or redistribute it, under
    4.22 +the terms of the GNU General Public License version 3, or (at your option) any
    4.23 +more recent version published by the Free Software Foundation. See COPYING for
    4.24 +details.
    4.25 +
    4.26 +Material file format extensions
    4.27 +-------------------------------
    4.28 +Clray will happily read obj/mtl files as exported by most programs. However, the
    4.29 +obj material file format does not specify a reflectivity factor. For this reason
    4.30 +I've added a custom mtl command named "Nr" to specify reflectivity. Just add it
    4.31 +manually to any material you want to make reflective, followed by a number in
    4.32 +the range ``[0, 1]``. For instance a reflective red material with white specular
    4.33 +highlights could be defined as follows::
    4.34 +
    4.35 +  newmtl mat_red_shiny
    4.36 +  Ka 1 0 0
    4.37 +  Kd 1 0 0
    4.38 +  Ks 0.8 0.8 0.8
    4.39 +  Ns 80
    4.40 +  Nr 0.75

     5.1 --- a/src/scene_obj.cc	Mon Dec 28 09:08:49 2015 +0200
     5.2 +++ b/src/scene_obj.cc	Mon Dec 28 10:27:23 2015 +0200
     5.3 @@ -27,7 +27,7 @@
     5.4  	CMD(KA),		\
     5.5  	CMD(KD),		\
     5.6  	CMD(KS),		\
     5.7 -	CMD(KR),		\
     5.8 +	CMD(NR),		\
     5.9  	CMD(NS),		\
    5.10  	CMD(NI),		\
    5.11  	CMD(D),			\
    5.12 @@ -70,7 +70,7 @@
    5.13  	float shininess;	// Ns
    5.14  	float ior;			// Ni
    5.15  	float alpha;		// d, Tr
    5.16 -	float refl;			// Kr (my extesnsion)
    5.17 +	float refl;			// Nr (my extesnsion)
    5.18  
    5.19  	std::string tex_dif, tex_spec, tex_shin, tex_alpha;	// map_Kd, map_Ks, map_Ns, map_d
    5.20  	std::string tex_refl;	// refl -type sphere|cube file
    5.21 @@ -415,7 +415,7 @@
    5.22  			parse_color(&mat.specular);
    5.23  			break;
    5.24  
    5.25 -		case CMD_KR:
    5.26 +		case CMD_NR:
    5.27  			if((tok = strtok(0, SEP)) && is_float(tok)) {
    5.28  				mat.refl = atof(tok);
    5.29  			}