GLProgram *GLProgramManager::CreateProgram(const std::string &name) {
SPADES_MARK_FUNCTION();
SPLog("Loading GLSL program '%s'", name.c_str());
std::string text = FileManager::ReadAllBytes(name.c_str());
std::vector<std::string> lines = SplitIntoLines(text);
GLProgram *p = new GLProgram(device, name);
for (size_t i = 0; i < lines.size(); i++) {
std::string text = TrimSpaces(lines[i]);
if (text.empty())
break;
if (text == "*shadow*") {
std::vector<GLShader *> shaders =
GLShadowShader::RegisterShader(this, settings, false);
for (size_t i = 0; i < shaders.size(); i++)
p->Attach(shaders[i]);
continue;
} else if (text == "*shadow-lite*") {
std::vector<GLShader *> shaders =
GLShadowShader::RegisterShader(this, settings, false, true);
for (size_t i = 0; i < shaders.size(); i++)
p->Attach(shaders[i]);
continue;
} else if (text == "*shadow-variance*") {
std::vector<GLShader *> shaders =
GLShadowShader::RegisterShader(this, settings, true);
for (size_t i = 0; i < shaders.size(); i++)
p->Attach(shaders[i]);
continue;
} else if (text == "*dlight*") {
std::vector<GLShader *> shaders = GLDynamicLightShader::RegisterShader(this);
for (size_t i = 0; i < shaders.size(); i++)
p->Attach(shaders[i]);
continue;
} else if (text == "*shadowmap*") {
std::vector<GLShader *> shaders = GLShadowMapShader::RegisterShader(this);
for (size_t i = 0; i < shaders.size(); i++)
p->Attach(shaders[i]);
continue;
} else if (text[0] == '*') {
SPRaise("Unknown special shader: %s", text.c_str());
} else if (text[0] == '#') {
continue;
}
GLShader *s = CreateShader(text);
p->Attach(s);
}
Stopwatch sw;
p->Link();
SPLog("Successfully linked GLSL program '%s' in %.3fms", name.c_str(),
sw.GetTime() * 1000.);
// p->Validate();
return p;
}
static void
LinkProgram(GLProgram &program)
{
program.Link();
if (program.GetLinkStatus() != GL_TRUE) {
char log[4096];
program.GetInfoLog(log, sizeof(log));
fprintf(stderr, "Shader linker failed: %s\n", log);
}
}
static GLProgram *
CompileProgram(const char *vertex_shader, const char *fragment_shader)
{
GLProgram *program = new GLProgram();
CompileAttachShader(*program, GL_VERTEX_SHADER, vertex_shader);
CompileAttachShader(*program, GL_FRAGMENT_SHADER, fragment_shader);
program->Link();
if (program->GetLinkStatus() != GL_TRUE) {
char log[4096];
program->GetInfoLog(log, sizeof(log));
fprintf(stderr, "Shader linker failed: %s\n", log);
}
return program;
}
