" type="cite">

Looks like an annoying gcc varying length array usage. Please replace it by using the MANTA_STACK_ALLOC or whatever it's called from Core/Util/Preprocessor.h . There are a few places in Manta where it's used if you need an example.

Solomon

On Jul 21, 2010, at 18:37, Raymond Cohen < "> > wrote:

Hi Manta developers,

Firstly, great work on the ray-tracer. I am trying to compile under windows using Visual Studio 2008. Currently I get the compile error shown below. Do you have any suggestions for how to proceed? The source line in question is:

Model/AmbientLights/.svn/text-base/AmbientOcclusion.cc.svn-base:68:    pair<float, float> sortedSamples[num_directions];

The compiler doesn't seem to like the non-constant "num_directions" here. Please let me know if you have any suggestions.

Cheers,

Ray

---- SNIP

D:\Manta_src\Manta\Build>nmake

Microsoft (R) Program Maintenance Utility Version 9.00.21022.08

Copyright (C) Microsoft Corporation.  All rights reserved.

[  0%] Built target About

[ 23%] Built target Manta_Core

[ 34%] Built target Manta_Interface

[ 38%] Built target Manta_Image

[ 38%] Building CXX object Model/CMakeFiles/Manta_Model.dir/AmbientLights/AmbientOcclusion.obj

AmbientOcclusion.cc

D:\Manta_src\Manta\Core/Color/RGBTraits.h(51) : warning C4244: 'return' : conversion from 'double' to 'Manta::RGBTraits:

:ComponentType', possible loss of data

D:\Manta_src\Manta\Core/Color/RGBTraits.h(53) : warning C4244: 'return' : conversion from 'double' to 'Manta::RGBTraits:

:ComponentType', possible loss of data

D:\Manta_src\Manta\Model/AmbientLights/AmbientOcclusion.h(21) : warning C4244: '=' : conversion from 'double' to 'Manta:

:ColorComponent', possible loss of data

D:\Manta_src\Manta\Model\AmbientLights\AmbientOcclusion.cc(27) : warning C4244: '=' : conversion from 'double' to 'Manta

::ColorComponent', possible loss of data

D:\Manta_src\Manta\Model\AmbientLights\AmbientOcclusion.cc(54) : warning C4244: '=' : conversion from 'double' to 'Manta

::ColorComponent', possible loss of data

D:\Manta_src\Manta\Model\AmbientLights\AmbientOcclusion.cc(68) : error C2057: expected constant _expression_

D:\Manta_src\Manta\Model\AmbientLights\AmbientOcclusion.cc(68) : error C2466: cannot allocate an array of constant size

0

D:\Manta_src\Manta\Model\AmbientLights\AmbientOcclusion.cc(68) : error C2133: 'sortedSamples' : unknown size

D:\Manta_src\Manta\Model\AmbientLights\AmbientOcclusion.cc(103) : warning C4244: 'initializing' : conversion from 'doubl

e' to 'float', possible loss of data

D:\Manta_src\Manta\Model\AmbientLights\AmbientOcclusion.cc(109) : warning C4244: 'initializing' : conversion from 'doubl

e' to 'float', possible loss of data

D:\Manta_src\Manta\Model\AmbientLights\AmbientOcclusion.cc(110) : warning C4244: '=' : conversion from 'double' to 'floa

t', possible loss of data

NMAKE : fatal error U1077: 'C:\PROGRA~1\MICROS~1.0\VC\bin\cl.exe' : return code '0x2'

Stop.

NMAKE : fatal error U1077: '"C:\Program Files\Microsoft Visual Studio 9.0\VC\BIN\nmake.exe"' : return code '0x2'

Stop.

NMAKE : fatal error U1077: '"C:\Program Files\Microsoft Visual Studio 9.0\VC\BIN\nmake.exe"' : return code '0x2'

Stop.