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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28
src/osg/TextureRectangle.cpp
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@@ -103,12 +103,12 @@ void TextureRectangle::apply(State& state) const
// current OpenGL context.
const unsigned int contextID = state.getContextID();
// get the globj for the current contextID.
GLuint& handle = getTextureObject(contextID);
// get the texture object for the current contextID.
TextureObject* textureObject = getTextureObject(contextID);
if (handle != 0)
if (textureObject != 0)
{
glBindTexture(GL_TEXTURE_RECTANGLE_NV, handle);
textureObject->bind();
if (getTextureParameterDirty(state.getContextID()))
applyTexParameters(GL_TEXTURE_RECTANGLE_NV, state);
@@ -117,33 +117,41 @@ void TextureRectangle::apply(State& state) const
}
else if (_subloadCallback.valid())
{
glGenTextures(1L, (GLuint *)&handle);
glBindTexture(GL_TEXTURE_RECTANGLE_NV, handle);
// we don't have a applyTexImage1D_subload yet so can't reuse.. so just generate a new texture object.
_textureObjectBuffer[contextID] = textureObject = getTextureObjectManager()->generateTextureObject(contextID,GL_TEXTURE_RECTANGLE_NV);
textureObject->bind();
applyTexParameters(GL_TEXTURE_RECTANGLE_NV, state);
_subloadCallback->load(*this, state);
textureObject->setAllocated(1,_internalFormat,_textureWidth,_textureHeight,1,0);
// in theory the following line is redundant, but in practice
// have found that the first frame drawn doesn't apply the textures
// unless a second bind is called?!!
// perhaps it is the first glBind which is not required...
glBindTexture(GL_TEXTURE_RECTANGLE_NV, handle);
//glBindTexture(GL_TEXTURE_RECTANGLE_NV, handle);
}
else if (_image.valid() && _image->data())
{
glGenTextures(1L, (GLuint *)&handle);
glBindTexture(GL_TEXTURE_RECTANGLE_NV, handle);
// we don't have a applyTexImage1D_subload yet so can't reuse.. so just generate a new texture object.
_textureObjectBuffer[contextID] = textureObject = getTextureObjectManager()->generateTextureObject(contextID,GL_TEXTURE_RECTANGLE_NV);
textureObject->bind();
applyTexParameters(GL_TEXTURE_RECTANGLE_NV, state);
applyTexImage(GL_TEXTURE_RECTANGLE_NV, _image.get(), state, _textureWidth, _textureHeight);
textureObject->setAllocated(1,_internalFormat,_textureWidth,_textureHeight,1,0);
// in theory the following line is redundant, but in practice
// have found that the first frame drawn doesn't apply the textures
// unless a second bind is called?!!
// perhaps it is the first glBind which is not required...
glBindTexture(GL_TEXTURE_RECTANGLE_NV, handle);
//glBindTexture(GL_TEXTURE_RECTANGLE_NV, handle);
}
else
{