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Added improved PBO support.

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This commit is contained in:
Robert Osfield 2005-02-22 13:34:24 +00:00
parent 25658ad31f
commit feb06f7e4b
1 changed files with 59 additions and 80 deletions
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139
src/osg/Texture.cpp
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@ -40,6 +40,8 @@ using namespace osg;
#define GL_STORAGE_SHARED_APPLE 0x85BF
#endif
// #define DO_TIMING
unsigned int Texture::s_numberTextureReusedLastInLastFrame = 0;
unsigned int Texture::s_numberNewTextureInLastFrame = 0;
unsigned int Texture::s_numberDeletedTextureInLastFrame = 0;
@ -759,6 +761,11 @@ void Texture::applyTexImage2D_load(State& state, GLenum target, const Image* ima
if (!image || !image->data())
return;
#ifdef DO_TIMING
osg::Timer_t start_tick = osg::Timer::instance()->tick();
osg::notify(osg::NOTICE)<<"glTexImage2D pixelFormat = "<<std::hex<<image->getPixelFormat()<<std::dec<<std::endl;
#endif
// get the contextID (user defined ID of 0 upwards) for the
// current OpenGL context.
const unsigned int contextID = state.getContextID();
@ -822,8 +829,28 @@ void Texture::applyTexImage2D_load(State& state, GLenum target, const Image* ima
}
bool useHardwareMipMapGeneration = !image->isMipmap() && _useHardwareMipMapGeneration && generateMipMapSupported;
unsigned int dataMinusOffset=0;
unsigned int dataPlusOffset=0;
const PixelBufferObject* pbo = image->getPixelBufferObject();
if (pbo && pbo->isBufferObjectSupported(contextID) && !needImageRescale)
{
pbo->compileBuffer(state);
pbo->bindBuffer(contextID);
dataMinusOffset = (unsigned int) data;
dataPlusOffset=pbo->offset(); // -dataMinusOffset+dataPlusOffset
#ifdef DO_TIMING
osg::notify(osg::NOTICE)<<"after PBO "<<osg::Timer::instance()->delta_m(start_tick,osg::Timer::instance()->tick())<<"ms"<<std::endl;
#endif
}
else
{
pbo = 0;
}
bool useHardwareMipMapGeneration = !image->isMipmap() && _useHardwareMipMapGeneration && generateMipMapSupported;
if( _min_filter == LINEAR || _min_filter == NEAREST || useHardwareMipMapGeneration)
{
bool hardwareMipMapOn = false;
@ -841,7 +868,7 @@ void Texture::applyTexImage2D_load(State& state, GLenum target, const Image* ima
inwidth, inheight, _borderWidth,
(GLenum)image->getPixelFormat(),
(GLenum)image->getDataType(),
data );
data -dataMinusOffset+dataPlusOffset);
}
else if (extensions->isCompressedTexImage2DSupported())
@ -854,7 +881,7 @@ void Texture::applyTexImage2D_load(State& state, GLenum target, const Image* ima
extensions->glCompressedTexImage2D(target, 0, _internalFormat,
inwidth, inheight,0,
size,
data);
data-dataMinusOffset+dataPlusOffset);
}
if (hardwareMipMapOn) glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP_SGIS,GL_FALSE);
@ -886,7 +913,7 @@ void Texture::applyTexImage2D_load(State& state, GLenum target, const Image* ima
width, height, _borderWidth,
(GLenum)image->getPixelFormat(),
(GLenum)image->getDataType(),
image->getMipmapData(k));
image->getMipmapData(k)-dataMinusOffset+dataPlusOffset);
width >>= 1;
height >>= 1;
@ -907,7 +934,7 @@ void Texture::applyTexImage2D_load(State& state, GLenum target, const Image* ima
extensions->glCompressedTexImage2D(target, k, _internalFormat,
width, height, _borderWidth,
size, image->getMipmapData(k));
size, image->getMipmapData(k)-dataMinusOffset+dataPlusOffset);
width >>= 1;
height >>= 1;
@ -924,7 +951,7 @@ void Texture::applyTexImage2D_load(State& state, GLenum target, const Image* ima
gluBuild2DMipmaps( target, _internalFormat,
inwidth,inheight,
(GLenum)image->getPixelFormat(), (GLenum)image->getDataType(),
data );
data -dataMinusOffset+dataPlusOffset);
int width = image->s();
int height = image->t();
@ -943,6 +970,17 @@ void Texture::applyTexImage2D_load(State& state, GLenum target, const Image* ima
}
if (pbo)
{
pbo->unbindBuffer(contextID);
}
#ifdef DO_TIMING
static double s_total_time = 0.0;
double delta_time = osg::Timer::instance()->delta_m(start_tick,osg::Timer::instance()->tick());
s_total_time += delta_time;
osg::notify(osg::NOTICE)<<"glTexImage2D "<<delta_time<<"ms total "<<s_total_time<<"ms"<<std::endl;
#endif
if (needImageRescale)
{
// clean up the resized image.
@ -971,6 +1009,10 @@ void Texture::applyTexImage2D_subload(State& state, GLenum target, const Image*
}
// else image size the same as when loaded so we can go ahead and subload
#ifdef DO_TIMING
osg::Timer_t start_tick = osg::Timer::instance()->tick();
osg::notify(osg::NOTICE)<<"glTexSubImage2D pixelFormat = "<<std::hex<<image->getPixelFormat()<<std::dec<<std::endl;
#endif
// get the contextID (user defined ID of 0 upwards) for the
@ -1037,12 +1079,14 @@ void Texture::applyTexImage2D_subload(State& state, GLenum target, const Image*
pbo->bindBuffer(contextID);
dataMinusOffset = (unsigned int) data;
dataPlusOffset=pbo->offset(); // -dataMinusOffset+dataPlusOffset
#ifdef DO_TIMING
osg::notify(osg::NOTICE)<<"after PBO "<<osg::Timer::instance()->delta_m(start_tick,osg::Timer::instance()->tick())<<"ms"<<std::endl;
#endif
}
else
{
pbo = 0;
}
if( _min_filter == LINEAR || _min_filter == NEAREST || useHardwareMipMapGeneration)
{
@ -1062,7 +1106,7 @@ void Texture::applyTexImage2D_subload(State& state, GLenum target, const Image*
inwidth, inheight,
(GLenum)image->getPixelFormat(),
(GLenum)image->getDataType(),
data - dataMinusOffset+dataPlusOffset);
data - dataMinusOffset + dataPlusOffset);
}
else if (extensions->isCompressedTexImage2DSupported())
@ -1075,7 +1119,7 @@ void Texture::applyTexImage2D_subload(State& state, GLenum target, const Image*
inwidth, inheight,
(GLenum)image->getPixelFormat(),
size,
data + -dataMinusOffset+dataPlusOffset );
data - dataMinusOffset + dataPlusOffset );
}
if (hardwareMipMapOn) glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP_SGIS,GL_FALSE);
@ -1104,7 +1148,7 @@ void Texture::applyTexImage2D_subload(State& state, GLenum target, const Image*
width, height,
(GLenum)image->getPixelFormat(),
(GLenum)image->getDataType(),
image->getMipmapData(k) -dataMinusOffset+dataPlusOffset);
image->getMipmapData(k) - dataMinusOffset + dataPlusOffset);
width >>= 1;
height >>= 1;
@ -1129,7 +1173,7 @@ void Texture::applyTexImage2D_subload(State& state, GLenum target, const Image*
width, height,
(GLenum)image->getPixelFormat(),
size,
image->getMipmapData(k) -dataMinusOffset+dataPlusOffset);
image->getMipmapData(k) - dataMinusOffset + dataPlusOffset);
//state.checkGLErrors("after extensions->glCompressedTexSubImage2D(");
@ -1141,75 +1185,7 @@ void Texture::applyTexImage2D_subload(State& state, GLenum target, const Image*
}
else
{
if (!compressed_image)
{
numMipmapLevels = 0;
int width = inwidth;
int height = inheight;
glPixelStorei(GL_PACK_ALIGNMENT,image->getPacking());
unsigned int newTotalSize = osg::Image::computeRowWidthInBytes(width,image->getPixelFormat(),image->getDataType(),image->getPacking())*height;
unsigned char* copyData1 = new unsigned char [newTotalSize];
unsigned char* copyData2 = new unsigned char [newTotalSize];
unsigned char* tmpdata = data;
int previous_width = width;
int previous_height = height;
for( GLsizei k = 0 ; (width || height) ;++k)
{
if (width == 0)
width = 1;
if (height == 0)
height = 1;
if (k>0)
{
if (data!=copyData1)
{
gluScaleImage(image->getPixelFormat(),
previous_width,previous_height,image->getDataType(),data,
width,height,image->getDataType(),copyData1);
data = copyData1;
}
else
{
gluScaleImage(image->getPixelFormat(),
previous_width,previous_height,image->getDataType(),data,
width,height,image->getDataType(),copyData2);
data = copyData2;
}
}
glTexSubImage2D( target, k,
0, 0,
width, height,
(GLenum)image->getPixelFormat(),
(GLenum)image->getDataType(),
data);
previous_width = width;
previous_height = height;
width >>= 1;
height >>= 1;
}
delete [] copyData1;
delete [] copyData2;
// restore the data paramters so it can be deleted if it was allocated locally via needImageRescale
data = tmpdata;
}
else
{
notify(WARN)<<"Warning:: Compressed image cannot be mip mapped"<<std::endl;
}
notify(WARN)<<"Warning:: cannot subload mip mapped texture from non mipmapped image."<<std::endl;
}
}
@ -1217,6 +1193,9 @@ void Texture::applyTexImage2D_subload(State& state, GLenum target, const Image*
{
pbo->unbindBuffer(contextID);
}
#ifdef DO_TIMING
osg::notify(osg::NOTICE)<<"glTexSubImage2D "<<osg::Timer::instance()->delta_m(start_tick,osg::Timer::instance()->tick())<<"ms"<<std::endl;
#endif
if (needImageRescale)
{