FGFS-4.1/OpenSceneGraph
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Added support for texture object manager, which provides an automatic mechansim

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for reusing deleted textures.
This commit is contained in:
Robert Osfield
2003-07-14 14:42:10 +00:00
parent 94d8e72ad3
commit 1b9d7d458a
18 changed files with 795 additions and 387 deletions
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66
src/osgText/Font.cpp
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@@ -387,16 +387,19 @@ void Font::GlyphTexture::apply(osg::State& state) const
const Extensions* extensions = getExtensions(contextID,true);
bool generateMipMapSupported = extensions->isGenerateMipMapSupported();
// get the globj for the current contextID.
GLuint& handle = getTextureObject(contextID);
// get the texture object for the current contextID.
TextureObject* textureObject = getTextureObject(contextID);
bool generateMipMapOn = false;
if (handle == 0)
if (textureObject == 0)
{
// being bound for the first time, need to allocate the texture
glGenTextures( 1L, (GLuint *)&handle );
glBindTexture( GL_TEXTURE_2D, handle );
_textureObjectBuffer[contextID] = textureObject = getTextureObjectManager()->reuseOrGenerateTextureObject(
contextID,GL_TEXTURE_2D,1,GL_LUMINANCE_ALPHA,getTextureWidth(), getTextureHeight(),1,0);
textureObject->bind();
applyTexParameters(GL_TEXTURE_2D,state);
@@ -411,7 +414,6 @@ void Font::GlyphTexture::apply(osg::State& state) const
if (generateMipMapSupported)
{
glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP_SGIS,GL_TRUE);
generateMipMapOn = true;
}
else glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, LINEAR);
break;
@@ -432,31 +434,31 @@ void Font::GlyphTexture::apply(osg::State& state) const
else
{
// reuse texture by binding.
glBindTexture( GL_TEXTURE_2D, handle );
textureObject->bind();
if (getTextureParameterDirty(contextID))
{
applyTexParameters(GL_TEXTURE_2D,state);
}
bool generateMipMapOn = false;
// need to look at generate mip map extension if mip mapping required.
switch(_min_filter)
{
case NEAREST_MIPMAP_NEAREST:
case NEAREST_MIPMAP_LINEAR:
case LINEAR_MIPMAP_NEAREST:
case LINEAR_MIPMAP_LINEAR:
if (generateMipMapSupported)
{
glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP_SGIS,GL_TRUE);
generateMipMapOn = true;
}
else glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, LINEAR);
break;
default:
// not mip mapping so no problems.
break;
}
// // need to look at generate mip map extension if mip mapping required.
// switch(_min_filter)
// {
// case NEAREST_MIPMAP_NEAREST:
// case NEAREST_MIPMAP_LINEAR:
// case LINEAR_MIPMAP_NEAREST:
// case LINEAR_MIPMAP_LINEAR:
// if (generateMipMapSupported)
// {
// glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP_SGIS,GL_TRUE);
// generateMipMapOn = true;
// }
// else glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, LINEAR);
// break;
// default:
// // not mip mapping so no problems.
// break;
// }
}
@@ -557,10 +559,10 @@ void Font::GlyphTexture::apply(osg::State& state) const
if (generateMipMapOn)
{
glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP_SGIS,GL_FALSE);
}
// if (generateMipMapTurnedOn)
// {
// glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP_SGIS,GL_FALSE);
// }
}