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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 1.37 by root, Thu Nov 4 15:43:53 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
64simple_material::begin ()
65{
66 glMaterialfv (GL_FRONT, GL_DIFFUSE, (GLfloat *) & diffuse);
67 glMaterialfv (GL_FRONT, GL_SPECULAR, (GLfloat *) & specular);
68 glMaterialfv (GL_FRONT, GL_EMISSION, (GLfloat *) & emission);
69 glMaterialf (GL_FRONT, GL_SHININESS, shininess);
70}
71
72void
73simple_material::end ()
74{
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}
94
95GLuint 15GLuint
96texture::load_texture (SDL_Surface * surface, GLfloat * tex2oord) 16texture::load_texture (SDL_Surface * surface, GLfloat * tex2oord)
97{ 17{
98 GLuint textur; 18 GLuint name;
99 int w, h;
100 SDL_Surface *image; 19 SDL_Surface *image;
101 SDL_Rect area; 20 SDL_Rect area;
102 Uint32 saved_flags; 21 Uint32 saved_flags;
103 Uint8 saved_alpha; 22 Uint8 saved_alpha;
104 23
105 /* Use the surface width and height expanded to powers of 2 */ 24 /* 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 */ 25 tex2oord[0] = 0.F; /* Min X */
111 tex2oord[1] = 0.0f; /* Min Y */ 26 tex2oord[1] = 0.F; /* Min Y */
112 tex2oord[2] = (GLfloat) surface->w / w; /* Max X */ 27 tex2oord[2] = 1.F; /* Max X */
113 tex2oord[3] = (GLfloat) surface->h / h; /* Max Y */ 28 tex2oord[3] = 1.F; /* Max Y */
114 29
115 image = SDL_CreateRGBSurface (SDL_SWSURFACE, w, h, 32, 30 image = SDL_CreateRGBSurface (SDL_SWSURFACE, surface->w, surface->h, 32,
116#if SDL_BYTEORDER == SDL_LIL_ENDIAN /* OpenGL RGBA masks */ 31#if SDL_BYTEORDER == SDL_LIL_ENDIAN /* OpenGL RGBA masks */
117 0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000 32 0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000
118#else 33#else
119 0xFF000000, 0x00FF0000, 0x0000FF00, 0x000000FF 34 0xFF000000, 0x00FF0000, 0x0000FF00, 0x000000FF
120#endif 35#endif
… …
139 /* Restore the alpha blending attributes */ 54 /* Restore the alpha blending attributes */
140 if ((saved_flags & SDL_SRCALPHA) == SDL_SRCALPHA) 55 if ((saved_flags & SDL_SRCALPHA) == SDL_SRCALPHA)
141 SDL_SetAlpha (surface, saved_flags, saved_alpha); 56 SDL_SetAlpha (surface, saved_flags, saved_alpha);
142 57
143 /* Create an OpenGL texture for the image */ 58 /* Create an OpenGL texture for the image */
144 glGenTextures (1, &textur); 59 glGenTextures (1, &name);
145 glBindTexture (GL_TEXTURE_2D, textur); 60 glBindTexture (GL_TEXTURE_2D, name);
146 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); 61 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
147 glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR); 62 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 63 glTexParameteri (GL_TEXTURE_2D, GL_GENERATE_MIPMAP, GL_TRUE);
149 glTexImage2D (GL_TEXTURE_2D, 64 glTexImage2D (GL_TEXTURE_2D,
150 0, 65 0,
151 GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, image->pixels); 66 GL_RGBA, surface->w, surface->h, 0, GL_RGBA, GL_UNSIGNED_BYTE, image->pixels);
152 SDL_FreeSurface (image); /* No longer needed */ 67 SDL_FreeSurface (image); /* No longer needed */
153 68
154 return textur; 69 return name;
155} 70}
156 71
157CGcontext cgc; 72void material::enable (view &ctx)
73{
74 pass::matmap_t &matmap = ctx.pass_data->matmap;
158 75
159void 76 pass::matmap_t::iterator i = matmap.find (this);
160init_shaders () 77 shader::program_object *p;
161{ 78
162 cgc = cgCreateContext (); 79 if (i == matmap.end ())
80 {
81 shader::program_object po;
82
83 shader::shader_builder::start ();
84 vsh (ctx);
85
86 if (ctx.pass_data->l)
87 ctx.pass_data->l->vsh ();
88
89 po->vsh->compile (shader::shader_builder::stop ());
90
91 shader::shader_builder::start ();
92 shader::compile::fout.frag_color = shader::compile::float4 (1., 1., 0., 1.);
93 fsh (ctx);
94 po->fsh->compile (shader::shader_builder::stop ());
95
96 po->link ();
97
98 matmap.insert (pass::matmap_t::value_type (this, po));
99
100 p = &po;
101 }
102 else
103 p = &i->second;
104
105 (*p)->enable ();
163} 106}
164 107
108void material::disable (view &ctx)
109{
110}
111
112test_material::test_material ()
113//: tex ("textures/osama.jpg"), texvar (tex.name)
114: tex ("textures/rockwall.jpg"), texvar (tex.name)
115, norm ("textures/rockwall_normal.jpg"), normvar (norm.name)
116{
117}
118
119static shader::varying_3f normal, lightvec;
120static shader::varying_2f texcoord;
121
122void test_material::vsh (view &ctx)
123{
124 using namespace shader::compile;
125
126 std_vsh ();
127
128 if (ctx.pass_data->l)
129 {
130 texcoord = xy (vin.tex_coord[0]);
131 normal = normal_matrix * vin.normal;
132 lightvec = xyz (ctx.pass_data->l->lightpos - model_view_matrix * vin.vertex);
133 }
134}
135
136void test_material::fsh (view &ctx)
137{
138 using namespace shader::compile;
139
140 if (ctx.pass_data->l)
141 {
142 temp_3f lc;
143 temp_1f fac;
144
145 lc = (*ctx.pass_data->l)();
146
147 temp_3f rot1, rot2, rot3;
148
149 yxz (rot1) = (texture_2d (normvar, texcoord) * 2.F - 1.F);
150
151 //rot1 = normal_matrix * rot1;
152
153 rot2 = float3 (x(rot1), z(rot1), -y(rot1));
154 rot3 = float3 (y(rot1), -x(rot1), z(rot1));
155
156 normal = mat3 (rot1, rot2, rot3) * normal;
157
158 fac = dot (normalize (normal), normalize (lightvec));
159 fac = max (pow (max (fac, 0.0), 6), 0.3);
160 xyz (fout.frag_color) = (texture_2d (texvar, texcoord) + 0.2F) * lc * fac;
161 //xyz (fout.frag_color) = lc * fac;
162 }
163}
164
165void test_material::enable (view &ctx)
166{
167 material::enable (ctx);
168 texvar->enable ();
169 normvar->enable ();
170}
171
172void test_material::disable (view &ctx)
173{
174 normvar->disable ();
175 texvar->disable ();
176 material::disable (ctx);
177}
178
179test_material *testmat;
180

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