void PhongShader::enable( unsigned char lightMask, bool useTexture )
{
// Computes the identifier of the shader
unsigned int identifier = computeIdentifier(lightMask, useTexture);
// Retrieves the shader
auto it=m_precompiledShaders.find(identifier) ;
if(it!=m_precompiledShaders.end())
{
it->second->enable() ;
return ;
}
// The shader has not been compiled... Let's go!
ShaderProgram * program = compileShaderProgram(lightMask, useTexture );
m_precompiledShaders[identifier] = program ;
program->enable() ;
}
QGLShaderProgram *MGLES2Renderer::getShaderProgram(const QString &frag, const QString &vert)
{
// First try a direct lookup with the passed-in filenames. If they are
// already canonical and the program exists in the cache, the file system
// access can be skipped altogether.
QGLShaderProgram *program = d_ptr->m_programCache.value(MGLProgramKey(frag, vert));
if (!program) {
const MGLProgramKey key(canonicalFilename(frag), canonicalFilename(vert));
program = d_ptr->m_programCache.value(key);
if (!program) {
program = d_ptr->requestBinaryProgram(key.first, key.second);
if (!program)
program = compileShaderProgram(key.first, key.second);
if (program)
d_ptr->m_programCache.insert(key, program);
}
}
return program;
}
