FGFS-4.1/OpenSceneGraph
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Updates to controlling maximum texture size

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This commit is contained in:
Robert Osfield
2004-09-04 09:22:26 +00:00
parent 6f1716a15b
commit f4839d7158
1 changed files with 32 additions and 16 deletions
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48
examples/osgvolume/osgvolume.cpp
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@@ -22,8 +22,6 @@
#include <osgProducer/Viewer>
const int maximumTextureSize = 256;
typedef std::vector< osg::ref_ptr<osg::Image> > ImageList;
struct PassThroughTransformFunction
@@ -257,7 +255,11 @@ struct ProcessRow
};
osg::Image* createTexture3D(ImageList& imageList, ProcessRow& processRow, unsigned int numComponentsDesired=0)
osg::Image* createTexture3D(ImageList& imageList, ProcessRow& processRow,
unsigned int numComponentsDesired,
int s_maximumTextureSize,
int t_maximumTextureSize,
int r_maximumTextureSize )
{
int max_s = 0;
int max_t = 0;
@@ -313,13 +315,13 @@ osg::Image* createTexture3D(ImageList& imageList, ProcessRow& processRow, unsign
// compute nearest powers of two for each axis.
int s_nearestPowerOfTwo = 1;
while(s_nearestPowerOfTwo<max_s && s_nearestPowerOfTwo<maximumTextureSize) s_nearestPowerOfTwo*=2;
while(s_nearestPowerOfTwo<max_s && s_nearestPowerOfTwo<s_maximumTextureSize) s_nearestPowerOfTwo*=2;
int t_nearestPowerOfTwo = 1;
while(t_nearestPowerOfTwo<max_t && t_nearestPowerOfTwo<maximumTextureSize) t_nearestPowerOfTwo*=2;
while(t_nearestPowerOfTwo<max_t && t_nearestPowerOfTwo<t_maximumTextureSize) t_nearestPowerOfTwo*=2;
int r_nearestPowerOfTwo = 1;
while(r_nearestPowerOfTwo<total_r && r_nearestPowerOfTwo<maximumTextureSize) r_nearestPowerOfTwo*=2;
while(r_nearestPowerOfTwo<total_r && r_nearestPowerOfTwo<r_maximumTextureSize) r_nearestPowerOfTwo*=2;
osg::notify(osg::NOTICE)<<"max image width = "<<max_s<<" nearest power of two = "<<s_nearestPowerOfTwo<<std::endl;
@@ -777,15 +779,29 @@ int main( int argc, char **argv )
bool createNormalMap = false;
while (arguments.read("-n")) createNormalMap=true;
float xSize=1.0f, ySize=1.0f, zSize=1.0f;
while (arguments.read("--xSize",xSize)) {}
while (arguments.read("--ySize",ySize)) {}
while (arguments.read("--zSize",zSize)) {}
float xMultiplier=1.0f, yMultiplier=1.0f, zMultiplier=1.0f;
while (arguments.read("--xMultiplier",xMultiplier)) {}
while (arguments.read("--yMultiplier",yMultiplier)) {}
while (arguments.read("--zMultiplier",zMultiplier)) {}
float xSize=1.0f, ySize=1.0f, zSize=1.0f;
while (arguments.read("--xSize",xSize)) {}
while (arguments.read("--ySize",ySize)) {}
while (arguments.read("--zSize",zSize)) {}
float xMultiplier=1.0f, yMultiplier=1.0f, zMultiplier=1.0f;
while (arguments.read("--xMultiplier",xMultiplier)) {}
while (arguments.read("--yMultiplier",yMultiplier)) {}
while (arguments.read("--zMultiplier",zMultiplier)) {}
int s_maximumTextureSize = 256;
int t_maximumTextureSize = 256;
int r_maximumTextureSize = 256;
int maximumTextureSize = 256;
while(arguments.read("--maxTextureSize",maximumTextureSize))
{
s_maximumTextureSize = maximumTextureSize;
t_maximumTextureSize = maximumTextureSize;
r_maximumTextureSize = maximumTextureSize;
}
while(arguments.read("--s_maxTextureSize",s_maximumTextureSize)) {}
while(arguments.read("--t_maxTextureSize",t_maximumTextureSize)) {}
while(arguments.read("--r_maxTextureSize",r_maximumTextureSize)) {}
osg::ref_ptr<osg::Image> image_3d;
@@ -806,7 +822,7 @@ int main( int argc, char **argv )
// pack the textures into a single texture.
ProcessRow processRow;
image_3d = createTexture3D(imageList, processRow);
image_3d = createTexture3D(imageList, processRow, 0, s_maximumTextureSize, t_maximumTextureSize, r_maximumTextureSize);
}