conworlds

annotate src/shader.h @ 18:e4257df067a1

find changesets by author, revision, files, or words in the commit message
oh yeah, now the tracking is solid. Wasn't rendering the correct part of the texture before.
author John Tsiombikas <nuclear@member.fsf.org>
date Tue, 26 Aug 2014 12:59:15 +0300
parents
children
rev   line source
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_