void ShaderLibrary::loadPreferences()
{
QString defaultShader(Preferences::DefaultShader());
if (defaultShader.isEmpty()) defaultShader = NoShader;
QVariantMap defaultShaderParameters(Preferences::DefaultShaderParameters());
setUniformVariables(defaultShader, defaultShaderParameters);
bindShader(defaultShader);
}
char GLSLBase::initializeShaders(std::string& log)
{
log = "";
GLint vertex_compiled, fragment_compiled;
GLint linked;
// Delete any existing program object
if (program_object) {
glDeleteObjectARB(program_object);
program_object = NULL;
}
vertex_shader = glCreateShaderObjectARB(GL_VERTEX_SHADER_ARB);
const char* a = vertexProgramSource();
glShaderSourceARB(vertex_shader, 1, &a, NULL);
glCompileShaderARB(vertex_shader);
glGetObjectParameterivARB(vertex_shader, GL_OBJECT_COMPILE_STATUS_ARB, &vertex_compiled);
fragment_shader = glCreateShaderObjectARB(GL_FRAGMENT_SHADER_ARB);
const char* b = fragmentProgramSource();
glShaderSourceARB(fragment_shader, 1, &b, NULL);
glCompileShaderARB(fragment_shader);
glGetObjectParameterivARB(fragment_shader, GL_OBJECT_COMPILE_STATUS_ARB, &fragment_compiled);
if (!vertex_compiled || !fragment_compiled) {
if (vertex_shader) {
glDeleteObjectARB(vertex_shader);
vertex_shader = NULL;
log += "\n Glsl error vertex shader not compiled \n";
}
if (fragment_shader) {
glDeleteObjectARB(fragment_shader);
fragment_shader = NULL;
log += "\n Glsl error fragment shader not compiled \n";
}
return 0;
}
program_object = glCreateProgramObjectARB();
if (vertex_shader != NULL)
{
glAttachObjectARB(program_object, vertex_shader);
glDeleteObjectARB(vertex_shader);
}
if (fragment_shader != NULL)
{
glAttachObjectARB(program_object, fragment_shader);
glDeleteObjectARB(fragment_shader);
}
glLinkProgramARB(program_object);
glGetObjectParameterivARB(program_object, GL_OBJECT_LINK_STATUS_ARB, &linked);
if (!linked) {
glDeleteObjectARB(program_object);
program_object = NULL;
log += "\n Glsl error shaders not linked";
return 0;
}
defaultShaderParameters();
log += "\n Glsl shaders compiled";
m_hasShaders = 1;
return 1;
}
