void GLSLProgram::getMicrocodeFromCache(uint32 id)
{
GpuProgramManager::Microcode cacheMicrocode =
GpuProgramManager::getSingleton().getMicrocodeFromCache(id);
cacheMicrocode->seek(0);
// Turns out we need this param when loading.
GLenum binaryFormat = 0;
cacheMicrocode->read(&binaryFormat, sizeof(GLenum));
// Get size of binary.
GLint binaryLength = static_cast<GLint>(cacheMicrocode->size() - sizeof(GLenum));
// Load binary.
OGRE_CHECK_GL_ERROR(glProgramBinary(mGLProgramHandle,
binaryFormat,
cacheMicrocode->getCurrentPtr(),
binaryLength));
GLint success = 0;
OGRE_CHECK_GL_ERROR(glGetProgramiv(mGLProgramHandle, GL_LINK_STATUS, &success));
if(success)
{
mLinked = true;
return;
}
logObjectInfo("could not load from cache "+getCombinedName(), mGLProgramHandle);
// Something must have changed since the program binaries
// were cached away. Fallback to source shader loading path,
// and then retrieve and cache new program binaries once again.
compileAndLink();
}
