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annotate src/shader.h @ 14:423d4e6728cb

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removed data from hg
author John Tsiombikas <nuclear@member.fsf.org>
date Sun, 24 Aug 2014 09:43:58 +0300
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nuclear@13 1 #ifndef SHADER_H_
nuclear@13 2 #define SHADER_H_
nuclear@13 3
nuclear@13 4 #include <vector>
nuclear@13 5 #include <string>
nuclear@13 6 #include "vmath/vmath.h"
nuclear@13 7 #include "opengl.h"
nuclear@13 8 #include "dataset.h"
nuclear@13 9
nuclear@13 10 class ShaderProg;
nuclear@13 11
nuclear@13 12
nuclear@13 13 void bind_shader(const ShaderProg *sdr);
nuclear@13 14 const ShaderProg *get_current_shader();
nuclear@13 15
nuclear@13 16
nuclear@13 17 class Shader {
nuclear@13 18 private:
nuclear@13 19 unsigned int sdr;
nuclear@13 20 unsigned int type;
nuclear@13 21 std::string name, src;
nuclear@13 22
nuclear@13 23 public:
nuclear@13 24 Shader();
nuclear@13 25 ~Shader();
nuclear@13 26
nuclear@13 27 unsigned int get_id() const;
nuclear@13 28
nuclear@13 29 void set_name(const char *name);
nuclear@13 30 const char *get_name() const;
nuclear@13 31
nuclear@13 32 bool create(const char *src, unsigned int type);
nuclear@13 33 void destroy();
nuclear@13 34
nuclear@13 35 bool load(const char *fname, unsigned int type);
nuclear@13 36
nuclear@13 37
nuclear@13 38 // these functions are only meant to be used by the ShaderSet
nuclear@13 39 static Shader *create_shader();
nuclear@13 40 static bool load_shader(Shader *sdr, const char *fname);
nuclear@13 41 static bool done_shader(Shader *sdr, unsigned int type);
nuclear@13 42 static void destroy_shader(Shader *sdr);
nuclear@13 43 };
nuclear@13 44
nuclear@13 45 #define VSDR(s) s, GL_VERTEX_SHADER
nuclear@13 46 #define FSDR(s) s, GL_FRAGMENT_SHADER
nuclear@13 47 #define PSDR(s) FSDR(s)
nuclear@13 48 #define GSDR(s) s, GL_GEOMETRY_SHADER
nuclear@13 49 #define TCSDR(s) s, GL_TESS_CONTROL_SHADER
nuclear@13 50 #define TESDR(s) s, GL_TESS_EVALUATION_SHADER
nuclear@13 51
nuclear@13 52 class ShaderProg {
nuclear@13 53 private:
nuclear@13 54 unsigned int prog;
nuclear@13 55 mutable bool must_link;
nuclear@13 56 std::vector<Shader*> shaders;
nuclear@13 57
nuclear@13 58 struct StateLocCache { int sidx, loc; };
nuclear@13 59 /** a cache of all st_ prefixed uniform locations and their corresponding
nuclear@13 60 * index in the global uniform state vector (see unistate.h)
nuclear@13 61 */
nuclear@13 62 mutable std::vector<StateLocCache> stloc_cache;
nuclear@13 63
nuclear@13 64 void cache_state_uniforms() const;
nuclear@13 65 void setup_state_uniforms() const;
nuclear@13 66
nuclear@13 67 public:
nuclear@13 68 static ShaderProg *current;
nuclear@13 69
nuclear@13 70 ShaderProg();
nuclear@13 71 ~ShaderProg();
nuclear@13 72
nuclear@13 73 /// returns the OpenGL object id for this shader program
nuclear@13 74 unsigned int get_id() const;
nuclear@13 75
nuclear@13 76 /** takes a series of shaders, and constructs a program object by linking
nuclear@13 77 * them together. Terminate with a null pointer (don't use 0!) */
nuclear@13 78 bool create(Shader *sdr, ...);
nuclear@13 79 /// same as above, but with a va_list instead of variable arguments.
nuclear@13 80 bool create(Shader *sdr, va_list ap);
nuclear@13 81 /** takes two shaders (vertex and pixel) and constructs a program object by
nuclear@13 82 * linking them together. Either one can be null. */
nuclear@13 83 bool create(Shader *vsdr, Shader *psdr);
nuclear@13 84
nuclear@13 85 /** takes a series of shader source/shader type pairs and constructs a program
nuclear@13 86 * object by linking them together. Terminate with a null pointer (don't use 0!)
nuclear@13 87 * You can use the VSDR, PSDR, GSDR, TCSDR, TESDR convenience macros for passing
nuclear@13 88 * the pairs.
nuclear@13 89 * Example: create(VSDR(vsrc0), VSDR(vsrc1), PSDR(psrc), NULL);
nuclear@13 90 */
nuclear@13 91 bool create(const char *src, unsigned int type, ...);
nuclear@13 92 /// same as above, but with a va_list instead of variable arguments.
nuclear@13 93 bool create(const char *src, unsigned int type, va_list ap);
nuclear@13 94 /** takes two shaders source strings (vertex and pixel) and constructs
nuclear@13 95 * a program object by linking them together. Either one can be null. */
nuclear@13 96 bool create(const char *vsrc, const char *psrc);
nuclear@13 97
nuclear@13 98 void destroy();
nuclear@13 99
nuclear@13 100 /** takes a series of shader filename/shader type pairs, loads the shaders and
nuclear@13 101 * constructs a program object by linking them together. Terminate with a null
nuclear@13 102 * pointer (don't use 0!). You can use the VSDR, PSDR, GSDR, TCSDR, TESDR convenience
nuclear@13 103 * macros for passing the pairs.
nuclear@13 104 * Example: load(VSDR("vsdr1.glsl"), VSDR("vsdr2.glsl"), PSDR("pixel.glsl"), NULL);
nuclear@13 105 */
nuclear@13 106 bool load(const char *fname, unsigned int type, ...);
nuclear@13 107 /// same as above, but with a va_list instead of variable arguments.
nuclear@13 108 bool load(const char *fname, unsigned int type, va_list ap);
nuclear@13 109 /** takes the filenames of two shader files (vertex and pixel), loads them and
nuclear@13 110 * constructs a program object by linking them together. Either one can be null */
nuclear@13 111 bool load(const char *vsrc, const char *psrc);
nuclear@13 112
nuclear@13 113 void add_shader(Shader *sdr);
nuclear@13 114 bool link() const;
nuclear@13 115
nuclear@13 116 void bind() const;
nuclear@13 117
nuclear@13 118 int get_attrib_location(const char *name) const;
nuclear@13 119 void set_attrib_location(const char *name, int loc) const;
nuclear@13 120
nuclear@13 121 int get_uniform_location(const char *name) const;
nuclear@13 122
nuclear@13 123 bool set_uniform(int loc, int val) const;
nuclear@13 124 bool set_uniform(int loc, float val) const;
nuclear@13 125 bool set_uniform(int loc, const Vector2 &v) const;
nuclear@13 126 bool set_uniform(int loc, const Vector3 &v) const;
nuclear@13 127 bool set_uniform(int loc, const Vector4 &v) const;
nuclear@13 128 bool set_uniform(int loc, const Matrix3x3 &m) const;
nuclear@13 129 bool set_uniform(int loc, const Matrix4x4 &m) const;
nuclear@13 130
nuclear@13 131 bool set_uniform(const char *name, int val) const;
nuclear@13 132 bool set_uniform(const char *name, float val) const;
nuclear@13 133 bool set_uniform(const char *name, const Vector2 &v) const;
nuclear@13 134 bool set_uniform(const char *name, const Vector3 &v) const;
nuclear@13 135 bool set_uniform(const char *name, const Vector4 &v) const;
nuclear@13 136 bool set_uniform(const char *name, const Matrix3x3 &m) const;
nuclear@13 137 bool set_uniform(const char *name, const Matrix4x4 &m) const;
nuclear@13 138
nuclear@13 139 friend void setup_unistate(const ShaderProg*);
nuclear@13 140 };
nuclear@13 141
nuclear@13 142 class ShaderSet : public DataSet<Shader*> {
nuclear@13 143 private:
nuclear@13 144 unsigned int type;
nuclear@13 145
nuclear@13 146 public:
nuclear@13 147 ShaderSet(unsigned int type);
nuclear@13 148 };
nuclear@13 149
nuclear@13 150 #endif // SHADER_H_