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#ifndef SHADER_H |
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#define SHADER_H |
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#include <sstream> |
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#include "opengl.h" |
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#include "util.h" |
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namespace shader { |
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using namespace std; |
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const int NAMELEN = 32; |
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template<class T> |
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struct sl_expr { |
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const T t; |
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sl_expr (const T &t) : t(t) { } |
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void operator ()() const { t (); } |
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}; |
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template<class A, class B> |
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struct sl_concat2 |
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{ |
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const A a; const B b; |
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sl_concat2 (const A &a, const B &b) : a(a), b(b) { } |
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void operator ()() const { a (); b (); } |
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}; |
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template<class A, class B, class C> |
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struct sl_concat3 |
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{ |
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const A a; const B b; const C c; |
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sl_concat3 (const A &a, const B &b, const C &c) : a(a), b(b), c(c) { } |
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void operator ()() const { a (); b (); c (); } |
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}; |
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template<class A, class B, class C, class D> |
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struct sl_concat4 |
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{ |
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const A a; const B b; const C c; const D d; |
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sl_concat4 (const A &a, const B &b, const C &c, const D &d) : a(a), b(b), c(c), d(d) { } |
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void operator ()() const { a (); b (); c (); d(); } |
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}; |
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class refcounted |
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{ |
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template<class type> friend class ref; |
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mutable int refcnt; |
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void refcnt_inc () const { refcnt++; } |
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void refcnt_dec () const { if (!--refcnt) delete this; }; |
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public: |
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refcounted () : refcnt(0) { } |
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virtual ~refcounted (); |
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}; |
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template<class type> |
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struct ref |
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{ |
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type *p; |
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ref () |
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{ |
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p = new type; |
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p->refcnt_inc (); |
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} |
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ref (type &d) |
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{ |
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d.refcnt_inc (); |
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p = &d; |
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} |
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ref (const ref &r) |
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{ |
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r.p->refcnt_inc (); |
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p = r.p; |
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} |
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template<class type2> |
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ref (const ref<type2> &r) |
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{ |
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r.p->refcnt_inc (); |
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p = r.p; |
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} |
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~ref () |
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{ |
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p->refcnt_dec (); |
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} |
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ref &operator =(type &d) |
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{ |
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d.refcnt_inc (); |
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p->refcnt_dec (); |
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p = &d; |
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return *this; |
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} |
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type *operator ->() const { return p; } |
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operator type &() const { return *p; } |
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template<class type2> |
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bool operator ==(const ref<type2> b) const |
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{ |
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return (void *)p == (void *)b.p; |
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} |
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}; |
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// ref with auto-construct |
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template<class type> |
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struct auto_ref0 : ref<type> |
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{ |
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auto_ref0 () : ref<type> (*new type ()) { } |
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}; |
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template<class type, typename arg1> |
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struct auto_ref1 : ref<type> |
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{ |
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auto_ref1 (arg1 a) : ref<type> (*new type (a)) { } |
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}; |
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template<class type> |
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struct auto_lvalue_ref0 : ref<type> |
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{ |
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auto_lvalue_ref0 () : ref<type> (*new type ()) { } |
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template<typename expr> |
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const auto_lvalue_ref0 &operator =(const expr &e) const; |
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}; |
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template<class type, typename arg1> |
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struct auto_lvalue_ref1 : ref<type> |
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{ |
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auto_lvalue_ref1 (arg1 a) : ref<type> (*new type (a)) { } |
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template<class expr> |
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const auto_lvalue_ref1 &operator =(const expr &e) const; |
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}; |
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extern const char str_float []; |
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extern const char str_vec2 []; |
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extern const char str_vec3 []; |
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extern const char str_vec4 []; |
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extern const char str_mat2 []; |
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extern const char str_mat3 []; |
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extern const char str_mat4 []; |
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extern const char str_sampler_1d []; |
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extern const char str_sampler_1d_shadow []; |
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extern const char str_sampler_2d []; |
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extern const char str_sampler_2d_shadow []; |
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extern const char str_sampler_2d_rect []; |
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extern const char str_sampler_2d_rect_shadow []; |
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extern const char str_sampler_3d []; |
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extern const char str_sampler_3d_rect []; |
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extern const char str_sampler_cube []; |
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typedef ref<struct var_i> var; |
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typedef ref<struct uniform_i> uniform; |
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struct shader_builder |
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{ |
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vector<uniform> refs; // uniform parameters |
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vector<var> temps; // temporary variables |
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vector<var> streams; // varying inputs & outputs |
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ostringstream source; |
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template<typename type> |
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shader_builder &operator <<(const type &t) |
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{ |
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source << t; |
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return *this; |
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} |
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}; |
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struct fragment_i : refcounted |
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{ |
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virtual void build (shader_builder &b) = 0; |
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}; |
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typedef ref<fragment_i> fragment; |
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struct lvalue_i : fragment_i |
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{ |
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}; |
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// a simple predeclared variable with unspecified type |
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struct glvar_i : lvalue_i |
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{ |
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const char *name; |
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void build (shader_builder &b); |
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glvar_i (const char *name) : name (name) { } |
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}; |
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typedef auto_lvalue_ref1<glvar_i, const char *> glvar; |
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struct var_i : lvalue_i |
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{ |
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static unsigned int next_id; |
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char name[NAMELEN]; |
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const char *typestr; |
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void build (shader_builder &b); |
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virtual void build_decl (ostringstream &b); |
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var_i (const char *typestr); |
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~var_i (); |
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}; |
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struct uniform_i : var_i |
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{ |
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bool dirty; |
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virtual void update () = 0; |
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void build (shader_builder &b); |
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void build_decl (ostringstream &b); |
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uniform_i (const char *strtype); |
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}; |
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template<int dimension, typename gltype, const char *strtype, void (*upd)(CGparameter, const gltype *)> |
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struct uniform2_i : uniform_i |
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{ |
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gltype data[dimension]; |
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void update () |
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{ |
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if (dirty) |
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{ |
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//upd (param, data); |
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dirty = false; |
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} |
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} |
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uniform2_i () : uniform_i (strtype) { } |
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}; |
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template<int dimension, const char *strtype, void (*update)(CGparameter, const GLfloat *)> |
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struct uniform_f_i : uniform2_i<dimension, GLfloat, strtype, update> |
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{ |
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}; |
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struct uniform_1f_i : uniform_f_i<1, str_float, cgGLSetParameter1fv> { |
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void operator =(GLfloat v) |
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{ |
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data[0] = v; |
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dirty = true; |
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} |
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}; |
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struct uniform_2f_i : uniform_f_i<2, str_vec2, cgGLSetParameter2fv> { }; |
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struct uniform_3f_i : uniform_f_i<3, str_vec3, cgGLSetParameter3fv> { |
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void operator =(const vec3 &v) |
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{ |
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data[0] = v.x; |
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data[1] = v.y; |
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data[2] = v.z; |
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dirty = true; |
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} |
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}; |
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struct uniform_4f_i : uniform_f_i<4, str_vec4, cgGLSetParameter4fv> { |
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#if 0 |
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void operator =(const gl::matrix &m) |
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{ |
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memcpy (data, m.data, 16 * sizeof (GLfloat)); |
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dirty = true; |
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} |
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#endif |
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}; |
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struct uniform_matrix_2f_i : uniform_f_i< 4, str_mat2, cgGLSetMatrixParameterfc> { }; |
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struct uniform_matrix_3f_i : uniform_f_i< 9, str_mat3, cgGLSetMatrixParameterfc> { }; |
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struct uniform_matrix_4f_i : uniform_f_i<16, str_mat4, cgGLSetMatrixParameterfc> { }; |
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root |
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template<class var_i> |
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struct var_ref : ref<var_i> |
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{ |
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root |
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var_ref (const char *glname = 0) |
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: ref<var_i> (*new var_i) |
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{ |
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if (glname) |
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strcpy ((*this)->name, glname); |
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} |
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}; |
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root |
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typedef var_ref<uniform_1f_i> uniform_1f; |
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typedef var_ref<uniform_2f_i> uniform_2f; |
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typedef var_ref<uniform_3f_i> uniform_3f; |
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typedef var_ref<uniform_4f_i> uniform_4f; |
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typedef var_ref<uniform_matrix_2f_i> uniform_matrix_2f; |
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typedef var_ref<uniform_matrix_3f_i> uniform_matrix_3f; |
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typedef var_ref<uniform_matrix_4f_i> uniform_matrix_4f; |
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root |
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struct stream_i : var_i |
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{ |
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void build (shader_builder &b); |
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void build_decl (ostringstream &b); |
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stream_i (const char *strtype) : var_i (strtype) { } |
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}; |
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template<int dimension, GLenum gltype, const char *strtype> |
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struct varying_i : stream_i |
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{ |
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varying_i (const char *glname) |
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: stream_i (strtype) |
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{ |
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strcpy (name, glname); |
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} |
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void set (GLsizei stride, GLvoid *ptr) |
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{ |
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//cgGLSetParameterPointer (param, dimension, gltype, stride, ptr); |
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} |
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}; |
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template<int dimension, const char *strtype> |
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struct varying_f_i : varying_i<dimension, GL_FLOAT, strtype> |
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{ |
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varying_f_i (const char *glname) : varying_i<dimension, GL_FLOAT, strtype> (glname) { } |
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void set (const gl::vertex_buffer_object &vb, GLint offset) |
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{ |
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varying_i<dimension, GL_FLOAT, strtype>::set (gl::format_stride (vb.format), (GLvoid *)(long)offset); |
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} |
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}; |
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struct varying_1f_i : varying_f_i<1, str_float> |
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{ |
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varying_1f_i (const char *glname) : varying_f_i<1, str_float> (glname) { } |
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}; |
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struct varying_2f_i : varying_f_i<2, str_vec2> |
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{ |
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varying_2f_i (const char *glname) : varying_f_i<2, str_vec2> (glname) { } |
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void set_t (const gl::vertex_buffer_object &vb) |
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{ |
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set (vb, gl::format_offset_t (vb.format)); |
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} |
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}; |
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struct varying_3f_i : varying_f_i<3, str_vec3> |
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{ |
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varying_3f_i (const char *glname) : varying_f_i<3, str_vec3> (glname) { } |
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void set_p (const gl::vertex_buffer_object &vb) |
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{ |
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set (vb, gl::format_offset_p (vb.format)); |
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} |
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void set_n (const gl::vertex_buffer_object &vb) |
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{ |
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set (vb, gl::format_offset_n (vb.format)); |
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} |
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}; |
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struct varying_4f_i : varying_f_i<4, str_vec4> |
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{ |
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varying_4f_i (const char *glname) : varying_f_i<4, str_vec4> (glname) { } |
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}; |
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root |
1.2 |
typedef var_ref<varying_1f_i> varying_1f; |
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typedef var_ref<varying_2f_i> varying_2f; |
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typedef var_ref<varying_3f_i> varying_3f; |
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typedef var_ref<varying_4f_i> varying_4f; |
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root |
1.1 |
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struct temporary_i : var_i |
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{ |
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void build (shader_builder &b); |
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temporary_i (const char *strtype); |
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}; |
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template<const char *strtype> |
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struct temp_ref : ref<temporary_i> |
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{ |
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temp_ref () |
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: ref<temporary_i> (*new temporary_i (strtype)) |
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{ |
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} |
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template<typename expr> |
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const temp_ref &operator =(const expr &e) const; |
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}; |
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typedef temp_ref<str_float> temp_1f; |
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typedef temp_ref<str_vec2> temp_2f; |
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typedef temp_ref<str_vec3> temp_3f; |
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typedef temp_ref<str_vec4> temp_4f; |
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typedef temp_ref<str_mat2> temp_matrix_2f; |
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typedef temp_ref<str_mat3> temp_matrix_3f; |
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typedef temp_ref<str_mat4> temp_matrix_4f; |
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template<GLenum gltype, const char *strtype> |
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struct sampler_i : uniform_i |
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{ |
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GLuint texture; |
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void update () |
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{ |
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if (dirty) |
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{ |
407 |
|
|
//cgGLSetTextureParameter (param, texture); |
408 |
|
|
dirty = false; |
409 |
|
|
} |
410 |
|
|
} |
411 |
|
|
|
412 |
|
|
void begin () |
413 |
|
|
{ |
414 |
|
|
cgGLEnableTextureParameter (texture); |
415 |
|
|
} |
416 |
|
|
|
417 |
|
|
sampler_i (GLuint texturename) : uniform_i (strtype), texture (texturename) { } |
418 |
|
|
}; |
419 |
|
|
|
420 |
|
|
struct sampler_1d_i : sampler_i<CG_SAMPLER1D, str_sampler_1d> |
421 |
|
|
{ |
422 |
|
|
sampler_1d_i (GLuint texturename) : sampler_i<CG_SAMPLER1D, str_sampler_1d> (texturename) { } |
423 |
|
|
}; |
424 |
|
|
|
425 |
|
|
struct sampler_1d_shadow_i : sampler_i<CG_SAMPLER1D, str_sampler_1d_shadow> |
426 |
|
|
{ |
427 |
|
|
sampler_1d_shadow_i (GLuint texturename) : sampler_i<CG_SAMPLER1D, str_sampler_1d_shadow> (texturename) { } |
428 |
|
|
}; |
429 |
|
|
|
430 |
|
|
struct sampler_2d_i : sampler_i<CG_SAMPLER2D, str_sampler_2d> |
431 |
|
|
{ |
432 |
|
|
sampler_2d_i (GLuint texturename) : sampler_i<CG_SAMPLER2D, str_sampler_2d> (texturename) { } |
433 |
|
|
}; |
434 |
|
|
|
435 |
|
|
struct sampler_2d_shadow_i : sampler_i<CG_SAMPLER2D, str_sampler_2d_shadow> |
436 |
|
|
{ |
437 |
|
|
sampler_2d_shadow_i (GLuint texturename) : sampler_i<CG_SAMPLER2D, str_sampler_2d_shadow> (texturename) { } |
438 |
|
|
}; |
439 |
|
|
|
440 |
|
|
struct sampler_2d_rect_i : sampler_i<CG_SAMPLERRECT, str_sampler_2d_rect> |
441 |
|
|
{ |
442 |
|
|
sampler_2d_rect_i (GLuint texturename) : sampler_i<CG_SAMPLERRECT, str_sampler_2d_rect> (texturename) { } |
443 |
|
|
}; |
444 |
|
|
|
445 |
|
|
struct sampler_2d_rect_shadow_i : sampler_i<CG_SAMPLERRECT, str_sampler_2d_rect_shadow> |
446 |
|
|
{ |
447 |
|
|
sampler_2d_rect_shadow_i (GLuint texturename) : sampler_i<CG_SAMPLERRECT, str_sampler_2d_rect_shadow> (texturename) { } |
448 |
|
|
}; |
449 |
|
|
|
450 |
|
|
struct sampler_3d_i : sampler_i<CG_SAMPLER3D, str_sampler_3d> |
451 |
|
|
{ |
452 |
|
|
sampler_3d_i (GLuint texturename) : sampler_i<CG_SAMPLER3D, str_sampler_3d> (texturename) { } |
453 |
|
|
}; |
454 |
|
|
|
455 |
|
|
struct sampler_3d_rect_i : sampler_i<CG_SAMPLER3D, str_sampler_3d_rect> |
456 |
|
|
{ |
457 |
|
|
sampler_3d_rect_i (GLuint texturename) : sampler_i<CG_SAMPLER3D, str_sampler_3d_rect> (texturename) { } |
458 |
|
|
}; |
459 |
|
|
|
460 |
|
|
struct sampler_cube_i : sampler_i<CG_SAMPLERCUBE, str_sampler_cube> |
461 |
|
|
{ |
462 |
|
|
sampler_cube_i (GLuint texturename) : sampler_i<CG_SAMPLERCUBE, str_sampler_cube> (texturename) { } |
463 |
|
|
}; |
464 |
|
|
|
465 |
|
|
typedef auto_ref1<sampler_1d_i, GLuint> sampler_1d; |
466 |
|
|
typedef auto_ref1<sampler_1d_shadow_i, GLuint> sampler_1d_shadow; |
467 |
|
|
typedef auto_ref1<sampler_2d_i, GLuint> sampler_2d; |
468 |
|
|
typedef auto_ref1<sampler_2d_shadow_i, GLuint> sampler_2d_shadow; |
469 |
|
|
typedef auto_ref1<sampler_2d_rect_i, GLuint> sampler_2d_rect; |
470 |
|
|
typedef auto_ref1<sampler_2d_rect_shadow_i, GLuint> sampler_2d_rect_shadow; |
471 |
|
|
typedef auto_ref1<sampler_3d_i, GLuint> sampler_3d; |
472 |
|
|
typedef auto_ref1<sampler_3d_rect_i, GLuint> sampler_3d_rect; |
473 |
|
|
typedef auto_ref1<sampler_cube_i, GLuint> sampler_cube; |
474 |
|
|
|
475 |
|
|
struct fragment_const_string_i : fragment_i |
476 |
|
|
{ |
477 |
|
|
const char *str; |
478 |
|
|
|
479 |
|
|
void build (shader_builder &b); |
480 |
|
|
|
481 |
|
|
fragment_const_string_i (const char *str) : str(str) { } |
482 |
|
|
}; |
483 |
|
|
|
484 |
|
|
typedef auto_ref1<fragment_const_string_i, const char *> fragment_const_string; |
485 |
|
|
|
486 |
|
|
struct fragment_string_i : fragment_i |
487 |
|
|
{ |
488 |
|
|
char *str; |
489 |
|
|
|
490 |
|
|
void build (shader_builder &b); |
491 |
|
|
|
492 |
|
|
fragment_string_i (const char *str) : str (strdup (str)) { } |
493 |
|
|
~fragment_string_i (); |
494 |
|
|
}; |
495 |
|
|
|
496 |
|
|
struct fragment_vector_i : fragment_i, vector<fragment> |
497 |
|
|
{ |
498 |
|
|
void build (shader_builder &b); |
499 |
|
|
|
500 |
|
|
template<class fragment_i> |
501 |
|
|
void append (const ref<fragment_i> &f) |
502 |
|
|
{ |
503 |
|
|
push_back (f); |
504 |
|
|
} |
505 |
|
|
|
506 |
|
|
void append_const (const char *s) |
507 |
|
|
{ |
508 |
|
|
push_back (*new fragment_const_string_i (s)); |
509 |
|
|
} |
510 |
|
|
|
511 |
|
|
void append_string (const char *s) |
512 |
|
|
{ |
513 |
|
|
push_back (*new fragment_string_i (s)); |
514 |
|
|
} |
515 |
|
|
|
516 |
|
|
#if 0 |
517 |
|
|
fragment_vector_i &operator <<(statement_i &f) |
518 |
|
|
{ |
519 |
|
|
push_back (*new fragment_const_string_i (" ")); |
520 |
|
|
|
521 |
|
|
for (vector<fragment>::iterator i = f.begin (); i != f.end (); i++) |
522 |
|
|
push_back (*i); |
523 |
|
|
|
524 |
|
|
push_back (*new fragment_const_string_i (";\n")); |
525 |
|
|
return *this; |
526 |
|
|
} |
527 |
|
|
#endif |
528 |
|
|
}; |
529 |
|
|
|
530 |
|
|
typedef ref<fragment_vector_i> fragment_vector; |
531 |
|
|
|
532 |
|
|
struct shader_object_i : fragment_vector_i |
533 |
|
|
{ |
534 |
|
|
GLenum type; |
535 |
|
|
GLuint id; // GLhandleARB, but 2.0 will use uint |
536 |
|
|
|
537 |
|
|
string source (); |
538 |
|
|
void compile (); |
539 |
|
|
void start (); |
540 |
|
|
void stop (); |
541 |
|
|
|
542 |
|
|
shader_object_i (GLenum type); |
543 |
|
|
~shader_object_i (); |
544 |
|
|
}; |
545 |
|
|
|
546 |
|
|
extern shader_object_i *cur; // record actions to this shader |
547 |
|
|
|
548 |
|
|
template<GLenum type> |
549 |
|
|
struct shader_object : ref<shader_object_i> |
550 |
|
|
{ |
551 |
|
|
shader_object () |
552 |
|
|
: ref<shader_object_i> (*new shader_object_i (type)) |
553 |
|
|
{ |
554 |
|
|
} |
555 |
|
|
}; |
556 |
|
|
|
557 |
|
|
typedef shader_object<GL_VERTEX_SHADER_ARB> vertex_shader; |
558 |
|
|
typedef shader_object<GL_FRAGMENT_SHADER_ARB> fragment_shader; |
559 |
|
|
|
560 |
|
|
void debdebdebdebug ();//D |
561 |
|
|
} |
562 |
|
|
|
563 |
|
|
#endif |
564 |
|
|
|