GLuint GLContextManager::getProgramID(const osg::Program *program)
{
if (!program || !pContext->isValid())
return 0;
if (hPrograms.count(program))
return hPrograms[program];
makeCurrent();
GLuint pid = glCreateProgram();
CHECK_GL();
hPrograms[program] = pid;
for(unsigned int i = 0 ; i < program->getNumShaders() ; ++i)
{
const osg::Shader *shader = program->getShader(i);
GLuint sid = getShaderID(shader);
glAttachShader(pid, sid);
CHECK_GL();
}
glLinkProgram(pid);
CHECK_GL();
GLint linked;
glGetProgramiv(pid, GL_LINK_STATUS, &linked);
CHECK_GL();
if (!linked)
std::cerr << "program link error" << std::endl;
const GLsizei max_len = 16384;
GLchar *buffer = new GLchar[max_len + 1];
memset(buffer, 0, max_len + 1);
GLsizei len;
glGetProgramInfoLog(pid, max_len, &len, buffer);
CHECK_GL();
if (len > 0)
{
std::cerr.write(buffer, len);
std::cerr << std::endl;
std::cerr << std::endl;
}
delete[] buffer;
return pid;
}
void DefaultMaterial::setUniforms(){
int colorLoc = glGetUniformLocation(getShaderID(), "color"); // Get the location of the uniform in the shader
glUniform3f(colorLoc, color[0], color[1], color[2]); // Set the color
}
