break render apart into multiple files

vis/include/cgl/shaderprogram.hpp

@@ -0,0 +1,46 @@
+#pragma once
+
+#include <string>
+#include <utility>
+
+#include <glad/glad.h>
+
+#include <cgl/error.hpp>
+#include <cgl/shader.hpp>
+#include <cgl/program.hpp>
+
+#include <util.hpp>
+
+namespace cgl{
+    template<GLenum mode>
+    class shaderprogram : public program {
+    public:
+        shaderprogram() : program() {
+            glProgramParameteri(id, GL_PROGRAM_SEPARABLE, GL_TRUE);
+        }
+
+        shaderprogram(const std::string &src) : shaderprogram() {
+            shader<mode> sh(src);
+
+            attach(sh);
+
+            if (!link())
+                throw shader_error(get_info_log());
+
+            detach(sh);
+        }
+
+        static shaderprogram<mode> file(const std::string &name) {
+            return shaderprogram<mode>(utilReadFile(name));
+        }
+    };
+
+    namespace pgm {
+        using vert = shaderprogram<GL_VERTEX_SHADER>;
+        using tcs = shaderprogram<GL_TESS_CONTROL_SHADER>;
+        using tes = shaderprogram<GL_TESS_EVALUATION_SHADER>;
+        using geom = shaderprogram<GL_GEOMETRY_SHADER>;
+        using frag = shaderprogram<GL_FRAGMENT_SHADER>;
+        using comp = shaderprogram<GL_COMPUTE_SHADER>;
+    }
+}