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From Fabien Lavignotte, "I use Texture2D::copyTexImage2D to generate some textures at each frame on a PagedLOD databases.

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There was some performance problems after a long run, because textures created with copyTexImage2D were not reused.
After investigation, there is a problem with the Texture Pool when a texture object is created with an empty profile, and then move after creation to TextureObjectSet with good profile using setAllocated method.
I have just changed a little bit the code of Texture2D::copyTexImage2D, to generate the texture object with the good profile at the start."
This commit is contained in:
Robert Osfield 2010-12-01 13:33:31 +00:00
parent 9c0e56d7a0
commit 78b15f8e17
1 changed files with 15 additions and 14 deletions
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29
src/osg/Texture2D.cpp
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@ -337,13 +337,7 @@ void Texture2D::copyTexImage2D(State& state, int x, int y, int width, int height
// switch off mip-mapping.
//
_textureObjectBuffer[contextID] = textureObject = generateTextureObject(this, contextID,GL_TEXTURE_2D);
textureObject->bind();
applyTexParameters(GL_TEXTURE_2D,state);
bool needHardwareMipMap = (_min_filter != LINEAR && _min_filter != NEAREST);
bool hardwareMipMapOn = false;
if (needHardwareMipMap)
@ -357,12 +351,6 @@ void Texture2D::copyTexImage2D(State& state, int x, int y, int width, int height
_min_filter = LINEAR;
}
}
GenerateMipmapMode mipmapResult = mipmapBeforeTexImage(state, hardwareMipMapOn);
glCopyTexImage2D( GL_TEXTURE_2D, 0, _internalFormat, x, y, width, height, 0 );
mipmapAfterTexImage(state, mipmapResult);
_textureWidth = width;
_textureHeight = height;
@ -373,7 +361,20 @@ void Texture2D::copyTexImage2D(State& state, int x, int y, int width, int height
for(int s=1; s<width || s<height; s <<= 1, ++_numMipmapLevels) {}
}
textureObject->setAllocated(_numMipmapLevels,_internalFormat,_textureWidth,_textureHeight,1,0);
_textureObjectBuffer[contextID] = textureObject = generateTextureObject(this, contextID,GL_TEXTURE_2D,_numMipmapLevels,_internalFormat,_textureWidth,_textureHeight,1,0);
textureObject->bind();
applyTexParameters(GL_TEXTURE_2D,state);
GenerateMipmapMode mipmapResult = mipmapBeforeTexImage(state, hardwareMipMapOn);
glCopyTexImage2D( GL_TEXTURE_2D, 0, _internalFormat, x, y, width, height, 0 );
mipmapAfterTexImage(state, mipmapResult);
textureObject->setAllocated(true);
// inform state that this texture is the current one bound.
state.haveAppliedTextureAttribute(state.getActiveTextureUnit(), this);