FGFS-4.1/OpenSceneGraph
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This commit is contained in:
Don BURNS
2003-06-24 15:40:09 +00:00
parent 5a939f5420
commit 15f88f35b2
91 changed files with 2871 additions and 1937 deletions
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50
src/osg/Image.cpp
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@@ -142,6 +142,7 @@ unsigned int Image::computeNumComponents(GLenum format)
switch(format)
{
case(GL_COMPRESSED_RGB_S3TC_DXT1_EXT): return 3;
case(GL_COMPRESSED_RGBA_S3TC_DXT1_EXT): return 4;
case(GL_COMPRESSED_RGBA_S3TC_DXT3_EXT): return 4;
case(GL_COMPRESSED_RGBA_S3TC_DXT5_EXT): return 4;
case(GL_COLOR_INDEX): return 1;
@@ -157,7 +158,11 @@ unsigned int Image::computeNumComponents(GLenum format)
case(GL_BGRA): return 4;
case(GL_LUMINANCE): return 1;
case(GL_LUMINANCE_ALPHA): return 2;
default: return 0;
default:
{
std::cout<<"error format = "<<std::hex<<format<<std::endl;
return 0;
}
}
}
@@ -167,6 +172,8 @@ unsigned int Image::computePixelSizeInBits(GLenum format,GLenum type)
switch(type)
{
case(GL_COMPRESSED_RGB_S3TC_DXT1_EXT): return 4;
case(GL_COMPRESSED_RGBA_S3TC_DXT1_EXT): return 4;
case(GL_COMPRESSED_RGBA_S3TC_DXT3_EXT): return 8;
@@ -199,7 +206,11 @@ unsigned int Image::computePixelSizeInBits(GLenum format,GLenum type)
case(GL_UNSIGNED_INT_8_8_8_8_REV):
case(GL_UNSIGNED_INT_10_10_10_2):
case(GL_UNSIGNED_INT_2_10_10_10_REV): return 32;
default: return 0;
default:
{
std::cout<<"error type = "<<type<<std::endl;
return 0;
}
}
}
@@ -209,6 +220,7 @@ unsigned int Image::computeRowWidthInBytes(int width,GLenum format,GLenum type,i
unsigned int pixelSize = computePixelSizeInBits(format,type);
int widthInBits = width*pixelSize;
int packingInBits = packing*8;
std::cout << "width="<<width<<" pixelSize="<<pixelSize<<" width in bit="<<widthInBits<<" packingInBits="<<packingInBits<<" widthInBits%packingInBits="<<widthInBits%packingInBits<<std::endl;
return (widthInBits/packingInBits + ((widthInBits%packingInBits)?1:0))*packing;
}
@@ -227,6 +239,40 @@ int Image::computeNearestPowerOfTwo(int s,float bias)
return s;
}
unsigned int Image::getTotalSizeInBytesIncludingMipmaps() const
{
if (_mipmapData.empty())
{
// no mips so just return size of main image
return getTotalSizeInBytes();
}
int s = _s;
int t = _t;
int r = _r;
unsigned int maxValue = 0;
for(unsigned int i=0;i<_mipmapData.size() && _mipmapData[i];++i)
{
s >>= 1;
t >>= 1;
r >>= 1;
maxValue = maximum(maxValue,_mipmapData[i]);
}
if (s==0) s=1;
if (t==0) t=1;
if (r==0) r=1;
unsigned int sizeOfLastMipMap = computeRowWidthInBytes(s,_pixelFormat,_dataType,_packing)*
r*t;
// std::cout<<"sizeOfLastMipMap="<<sizeOfLastMipMap<<"\ts="<<s<<"\tt="<<t<<"\tr"<<r<<std::endl;
return maxValue+sizeOfLastMipMap;
}
void Image::setInternalTextureFormat(GLint internalFormat)
{
// won't do any sanity checking right now, leave it to