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Comparing cvsroot/libgender/material.C (file contents):
Revision 1.8 by root, Thu Oct 21 15:46:38 2004 UTC vs.
Revision 1.28 by root, Mon Nov 1 22:23:38 2004 UTC

1#include "opengl.h"
2#include "material.h"
3
4#include <cstdlib> 1#include <cstdlib>
5#include <cstring> 2#include <cstring>
6 3
7namespace shader { 4#include <algorithm>
8 5
9 static CGcontext cg_context = cgCreateContext (); 6#include "opengl.h"
10 7#include "material.h"
11 int var_i::next_name = 0; 8#include "view.h"
12 9#include "util.h"
13 var_i::var_i (CGtype cgtype)
14 {
15 name = ++next_name;
16 param = cgCreateParameter (cg_context, cgtype);
17 }
18
19 var_i::~var_i ()
20 {
21 cgDestroyParameter (param);
22 }
23
24 void var_i::build (shader_builder &b)
25 {
26 abort ();
27 }
28
29 void var_i::build_decl (shader_builder &b)
30 {
31 abort ();
32 }
33
34 template<int dimension, GLenum gltype, CGtype cgtype>
35 varying_i<dimension, gltype, cgtype>::varying_i (const char *binding)
36 : var_i (cgtype)
37 {
38 strcpy (this->binding, binding);
39 }
40
41 varying_3f_i position_3f_i ("POSITION");
42 varying_3f_i normal_3f_i ("NORMAL");
43 varying_3f_i color0_3f_i ("COLOR0");
44 varying_3f_i color1_3f_i ("COLOR1");
45 varying_2f_i texcoord0_2f_i ("TEXCOORD0");
46 varying_2f_i texcoord1_2f_i ("TEXCOORD1");
47 varying_2f_i texcoord2_2f_i ("TEXCOORD2");
48 varying_2f_i texcoord3_2f_i ("TEXCOORD3");
49 varying_2f_i texcoord4_2f_i ("TEXCOORD4");
50 varying_2f_i texcoord5_2f_i ("TEXCOORD5");
51 varying_2f_i texcoord6_2f_i ("TEXCOORD6");
52 varying_2f_i texcoord7_2f_i ("TEXCOORD7");
53 varying_1f_i psize_1f_i ("PSIZE");
54 varying_1f_i attr6_1f_i ("ATTR6"), attr7_1f_i ("ATTR7");
55 varying_2f_i attr6_2f_i ("ATTR6"), attr7_2f_i ("ATTR7");
56 varying_3f_i attr6_3f_i ("ATTR6"), attr7_3f_i ("ATTR7");
57}
58 10
59material::~material () 11material::~material ()
60{ 12{
61} 13}
62 14
63void 15void
64simple_material::begin () 16simple_material::enable (view &ctx)
65{ 17{
66 glMaterialfv (GL_FRONT, GL_DIFFUSE, (GLfloat *) & diffuse); 18 glMaterialfv (GL_FRONT, GL_DIFFUSE, (GLfloat *) & diffuse);
67 glMaterialfv (GL_FRONT, GL_SPECULAR, (GLfloat *) & specular); 19 glMaterialfv (GL_FRONT, GL_SPECULAR, (GLfloat *) & specular);
68 glMaterialfv (GL_FRONT, GL_EMISSION, (GLfloat *) & emission); 20 glMaterialfv (GL_FRONT, GL_EMISSION, (GLfloat *) & emission);
69 glMaterialf (GL_FRONT, GL_SHININESS, shininess); 21 glMaterialf (GL_FRONT, GL_SHININESS, shininess);
70} 22}
71 23
72void 24void
73simple_material::end () 25simple_material::disable (view &ctx)
74{ 26{
75}
76
77void
78osama_material::begin ()
79{
80 cgGLEnableProfile (vsh_profile);
81 cgGLEnableProfile (fsh_profile);
82 cgGLEnableTextureParameter (g_Texture);
83}
84
85void
86osama_material::end ()
87{
88 cgGLDisableTextureParameter (g_Texture);
89 // cgGLUnbindProgram (vsh_profile);
90 // cgGLUnbindProgram (fsh_profile);
91 cgGLDisableProfile (vsh_profile);
92 cgGLDisableProfile (fsh_profile);
93} 27}
94 28
95GLuint 29GLuint
96texture::load_texture (SDL_Surface * surface, GLfloat * tex2oord) 30texture::load_texture (SDL_Surface * surface, GLfloat * tex2oord)
97{ 31{
98 GLuint textur; 32 GLuint name;
99 int w, h;
100 SDL_Surface *image; 33 SDL_Surface *image;
101 SDL_Rect area; 34 SDL_Rect area;
102 Uint32 saved_flags; 35 Uint32 saved_flags;
103 Uint8 saved_alpha; 36 Uint8 saved_alpha;
104 37
105 /* Use the surface width and height expanded to powers of 2 */ 38 /* Use the surface width and height expanded to powers of 2 */
106 //w = power_of_two (surface->w);
107 //h = power_of_two (surface->h);
108 w = power_of_two (surface->w);
109 h = power_of_two (surface->h);
110 tex2oord[0] = 0.0f; /* Min X */ 39 tex2oord[0] = 0.F; /* Min X */
111 tex2oord[1] = 0.0f; /* Min Y */ 40 tex2oord[1] = 0.F; /* Min Y */
112 tex2oord[2] = (GLfloat) surface->w / w; /* Max X */ 41 tex2oord[2] = 1.F; /* Max X */
113 tex2oord[3] = (GLfloat) surface->h / h; /* Max Y */ 42 tex2oord[3] = 1.F; /* Max Y */
114 43
115 image = SDL_CreateRGBSurface (SDL_SWSURFACE, w, h, 32, 44 image = SDL_CreateRGBSurface (SDL_SWSURFACE, surface->w, surface->h, 32,
116#if SDL_BYTEORDER == SDL_LIL_ENDIAN /* OpenGL RGBA masks */ 45#if SDL_BYTEORDER == SDL_LIL_ENDIAN /* OpenGL RGBA masks */
117 0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000 46 0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000
118#else 47#else
119 0xFF000000, 0x00FF0000, 0x0000FF00, 0x000000FF 48 0xFF000000, 0x00FF0000, 0x0000FF00, 0x000000FF
120#endif 49#endif
… …
139 /* Restore the alpha blending attributes */ 68 /* Restore the alpha blending attributes */
140 if ((saved_flags & SDL_SRCALPHA) == SDL_SRCALPHA) 69 if ((saved_flags & SDL_SRCALPHA) == SDL_SRCALPHA)
141 SDL_SetAlpha (surface, saved_flags, saved_alpha); 70 SDL_SetAlpha (surface, saved_flags, saved_alpha);
142 71
143 /* Create an OpenGL texture for the image */ 72 /* Create an OpenGL texture for the image */
144 glGenTextures (1, &textur); 73 glGenTextures (1, &name);
145 glBindTexture (GL_TEXTURE_2D, textur); 74 glBindTexture (GL_TEXTURE_2D, name);
146 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); 75 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
147 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR); 76 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
148 glTexParameteri (GL_TEXTURE_2D, GL_GENERATE_MIPMAP_SGIS, GL_TRUE); // GENERATE_MIPMAP_SGIS 77 glTexParameteri (GL_TEXTURE_2D, GL_GENERATE_MIPMAP, GL_TRUE);
149 glTexImage2D (GL_TEXTURE_2D, 78 glTexImage2D (GL_TEXTURE_2D,
150 0, 79 0,
151 GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, image->pixels); 80 GL_RGBA, surface->w, surface->h, 0, GL_RGBA, GL_UNSIGNED_BYTE, image->pixels);
152 SDL_FreeSurface (image); /* No longer needed */ 81 SDL_FreeSurface (image); /* No longer needed */
153 82
154 return textur; 83 return name;
155} 84}
156 85
157CGcontext cgc; 86test_material::test_material ()
87//: tex ("textures/osama.jpg"), texvar (tex.name)
88: tex ("textures/rockwall.jpg"), texvar (tex.name)
89, norm ("textures/rockwall_height.jpg"), normvar (norm.name)
90{
91 using namespace shader::compile;
158 92
159void 93 p.vsh->start ();
160init_shaders () 94
161{ 95 temp_4f wpos;
162 cgc = cgCreateContext (); 96 varying_1f camdist, zpos;
97 varying_2f texcoord;
98 varying_3f lightvec, normal;
99
100 wpos = model_view_matrix * vin.vertex;
101
102 temp_1f wz;
103 //wz = log2 (abs (wz)) * sign (wz);
104
105 vout.position = projection_matrix * wpos;
106 texcoord = xy (vin.tex_coord[0]);
107 normal = normal_matrix * vin.normal;
108 lightvec = xyz (lightpos - model_view_matrix * vin.vertex);
109 camdist = 1 - max (length (lightvec) / 10000., 0);
110
111 p.vsh->end ();
112 p.vsh->compile ();
113
114 p.fsh->start ();
115
116 temp_1f fac;
117 temp_2f disp;
118 temp_1f dx, dy;
119 temp_1f bumpnormal;
120 temp_1f dist;
121
122 fac = dot (normalize (normal), normalize (lightvec));
123 //fac = dot (shader::compile::vec3 (normalize (fin.tex_coord[1]) + normalize (fin.tex_coord[2])) * 0.5, bumpnormal);
124 //fac = dot (bumpnormal, normalize (fin.tex_coord[2]));
125 fac = pow (max (fac, 0.0), 2);
126 xyz (fout.frag_color) = texture_2d (texvar, texcoord) * (fac + 0.4) * camdist;
127
128 p.fsh->end ();
129 p.fsh->compile ();
130 p.link ();
163} 131}
164 132
133void test_material::enable (view &ctx)
134{
135 p.enable ();
136 lightpos->set (vec3 (0, 0, 0));
137 texvar->enable ();
138 normvar->enable ();
139}
140
141void test_material::disable (view &ctx)
142{
143 normvar->disable ();
144 texvar->disable ();
145 p.disable ();
146}
147

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