#include <map>
#include <string>
+#include <GL/gl.h>
+
+// Can alias on a float[2].
+struct Point2D {
+ Point2D(float x, float y)
+ : x(x), y(y) {}
+
+ float x, y;
+};
+
// Can alias on a float[3].
struct RGBTriplet {
RGBTriplet(float r, float g, float b)
float r, g, b;
};
+// Convenience functions that deal with prepending the prefix.
+void set_uniform_float(GLuint glsl_program_num, const std::string &prefix, const std::string &key, float value);
+void set_uniform_vec2(GLuint glsl_program_num, const std::string &prefix, const std::string &key, const float *values);
+void set_uniform_vec3(GLuint glsl_program_num, const std::string &prefix, const std::string &key, const float *values);
+
class Effect {
public:
virtual bool needs_linear_light() { return true; }
virtual bool needs_many_samples() { return false; }
virtual bool needs_mipmaps() { return false; }
+ virtual std::string output_convenience_uniforms();
+ virtual std::string output_vertex_shader();
+ virtual std::string output_fragment_shader() = 0;
+
+ virtual void set_uniforms(GLuint glsl_program_num, const std::string& prefix);
+
// Neither of these take ownership.
bool set_int(const std::string&, int value);
bool set_float(const std::string &key, float value);
+ bool set_vec2(const std::string &key, const float *values);
bool set_vec3(const std::string &key, const float *values);
protected:
// Neither of these take ownership.
void register_int(const std::string &key, int *value);
void register_float(const std::string &key, float *value);
+ void register_vec2(const std::string &key, float *values);
void register_vec3(const std::string &key, float *values);
private:
std::map<std::string, int *> params_int;
std::map<std::string, float *> params_float;
+ std::map<std::string, float *> params_vec2;
std::map<std::string, float *> params_vec3;
};