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diguyOglGraphicsShaderProgram.h
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1 #ifndef __diguyOglGraphicsShaderProgram_H
2 #define __diguyOglGraphicsShaderProgram_H
3 
4 
5 
6 #include "ogl_headers.h"
7 
8 class diguyGraphicsLink;
9 
10 #include <diguyGraphicsShaderProgram.h>
11 #include <hash_map>
12 
13 
14 /*********************************************************************
15  **
16  *2 diguyOglGraphicsShaderProgram
17  **
18  ** This class is part of the DI-Guy Graphics API. It overrides the class
19  ** diguyGraphicsShaderProgram. Detailed documentation is in the
20  ** implementation file documentation
21  ** <a href="diguyOglGraphicsShaderProgram.cpp.html">here</a>.
22  */
23 
24 class diguyOglGraphicsShaderProgram : public diguyGraphicsShaderProgram
25 {
26 
27 public:
28 
29  diguyOglGraphicsShaderProgram(void* internal_data);
30  ~diguyOglGraphicsShaderProgram();
31 
32  virtual int load_vertex_shader_source(const char* filename_base);
33  virtual int load_pixel_shader_source(const char* filename_base);
34  virtual int reload();
35  virtual int link();
36 
37  virtual int bind();
38  virtual int unbind();
39 
40  GLhandleARB get_gl_program_object() {return m_gl_program_object;}
41 
42  GLhandleARB m_gl_program_object;
43 
44  /*
45  * Though looked up here, these bind locations are used in
46  * diguyOglGraphicsMesh.cpp.
47  */
48  int m_bind_location_attr_weight_array;
49  int m_bind_location_attr_index_array;
50  int m_bind_location_attr_tangent;
51 
52  int m_bind_location_ufrm_apply_matrices_flag;
53  int m_bind_location_ufrm_link_matrix;
54  int m_bind_location_ufrm_inverse_transform_matrix;
55  int m_bind_location_ufrm_link_matrices;
56  int m_bind_location_ufrm_link_colors;
57 
58  int m_bind_location_ufrm_link_matrices_tbo;
59  int m_bind_location_ufrm_link_matrices_start;
60  int m_bind_location_ufrm_link_matrices_count;
61 
62  int m_bind_location_ufrm_light_dir_os;
63  int m_bind_location_ufrm_eye_point_os;
64 
65  int m_bind_location_ufrm_textures_enabled;
66 
67  int m_bind_location_ufrm_bump_map_enabled;
68  int m_bind_location_ufrm_specular_map_enabled;
69  int m_bind_location_ufrm_component_map_enabled;
70 
71  int m_bind_location_ufrm_misc_1_map_enabled;
72  int m_bind_location_ufrm_misc_2_map_enabled;
73 
74  int m_bind_location_ufrm_light_array;
75  int m_include_point_lights;
76 
77  /*
78  * Uniform for controlling whether links matrices are applied to
79  * vertices in the vertex shader. Set from the mesh draw() function.
80  */
81  virtual void set_apply_matrices_flag(int apply_matrices_flag);
82 
83  /*
84  * Called by diguy internal code to send data to the shaders.
85  */
86  virtual int bind_color_array(int num_colors,
87  const float* color_data);
88  virtual int bind_link_matrices(int num_mats,
89  const float* mat_data);
90 
91  virtual int bind_uniform_with_location(int location,
92  const char* name,
93  int value_size,
94  float* values);
95  virtual int bind_uniform_with_location(int location,
96  const char* name,
97  int value_size,
98  int* values);
99 
100  /*
101  * Called by diguy internal find out what capabilities the shader has.
102  */
103  virtual int get_attrib_bind_location(const char* name);
104  virtual int get_uniform_bind_location(const char* name);
105 
106  /*
107  * These are render state variables whose values are set by DI-Guy.
108  * They should not be set in bind(), but in the appropriate
109  * diguyOglGraphicsShaderInstance virtual functions.
110  */
111 
112 protected:
113 
114  int load_and_compile_shader(GLhandleARB shader_object,
115  const char* shader_filename,
116  bool& shader_loaded);
117 
118  char* load_shader_source(const char* shader_filename);
119  void free_shader_source(char* source_source);
120  void update_light_uniforms();
121 
122  char m_vertex_shader_filename[512];
123  bool m_vertex_shader_loaded;
124  GLhandleARB m_gl_vertex_shader_object;
125 
126  char m_pixel_shader_filename[512];
127  bool m_pixel_shader_loaded;
128  GLhandleARB m_gl_pixel_shader_object;
129 
130  bool m_linked;
131  float m_last_light_update_time;
132  const float * m_last_matrix_data;
133 
134 };
135 
136 
141 diguyGraphicsShaderProgram* diguyOglGraphicsShaderProgram_create_func(void* internal_data);
142 
143 
144 #endif