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3 | |
4 | #include <algorithm> |
4 | #include <algorithm> |
5 | |
5 | |
6 | #include "opengl.h" |
6 | #include "opengl.h" |
7 | #include "material.h" |
7 | #include "material.h" |
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8 | #include "view.h" |
8 | #include "util.h" |
9 | #include "util.h" |
9 | |
10 | |
10 | material::~material () |
11 | material::~material () |
11 | { |
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12 | } |
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13 | |
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14 | void |
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15 | simple_material::enable () |
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16 | { |
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17 | glMaterialfv (GL_FRONT, GL_DIFFUSE, (GLfloat *) & diffuse); |
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18 | glMaterialfv (GL_FRONT, GL_SPECULAR, (GLfloat *) & specular); |
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19 | glMaterialfv (GL_FRONT, GL_EMISSION, (GLfloat *) & emission); |
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20 | glMaterialf (GL_FRONT, GL_SHININESS, shininess); |
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21 | } |
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22 | |
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23 | void |
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24 | simple_material::disable () |
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25 | { |
12 | { |
26 | } |
13 | } |
27 | |
14 | |
28 | GLuint |
15 | GLuint |
29 | texture::load_texture (SDL_Surface * surface, GLfloat * tex2oord) |
16 | texture::load_texture (SDL_Surface * surface, GLfloat * tex2oord) |
30 | { |
17 | { |
31 | GLuint name; |
18 | GLuint name; |
32 | int w, h; |
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33 | SDL_Surface *image; |
19 | SDL_Surface *image; |
34 | SDL_Rect area; |
20 | SDL_Rect area; |
35 | Uint32 saved_flags; |
21 | Uint32 saved_flags; |
36 | Uint8 saved_alpha; |
22 | Uint8 saved_alpha; |
37 | |
23 | |
38 | /* Use the surface width and height expanded to powers of 2 */ |
24 | /* Use the surface width and height expanded to powers of 2 */ |
39 | //w = power_of_two (surface->w); |
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40 | //h = power_of_two (surface->h); |
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41 | w = power_of_two (surface->w); |
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42 | h = power_of_two (surface->h); |
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43 | tex2oord[0] = 0.0f; /* Min X */ |
25 | tex2oord[0] = 0.F; /* Min X */ |
44 | tex2oord[1] = 0.0f; /* Min Y */ |
26 | tex2oord[1] = 0.F; /* Min Y */ |
45 | tex2oord[2] = (GLfloat) surface->w / w; /* Max X */ |
27 | tex2oord[2] = 1.F; /* Max X */ |
46 | tex2oord[3] = (GLfloat) surface->h / h; /* Max Y */ |
28 | tex2oord[3] = 1.F; /* Max Y */ |
47 | |
29 | |
48 | image = SDL_CreateRGBSurface (SDL_SWSURFACE, w, h, 32, |
30 | image = SDL_CreateRGBSurface (SDL_SWSURFACE, surface->w, surface->h, 32, |
49 | #if SDL_BYTEORDER == SDL_LIL_ENDIAN /* OpenGL RGBA masks */ |
31 | #if SDL_BYTEORDER == SDL_LIL_ENDIAN /* OpenGL RGBA masks */ |
50 | 0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000 |
32 | 0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000 |
51 | #else |
33 | #else |
52 | 0xFF000000, 0x00FF0000, 0x0000FF00, 0x000000FF |
34 | 0xFF000000, 0x00FF0000, 0x0000FF00, 0x000000FF |
53 | #endif |
35 | #endif |
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79 | glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); |
61 | glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); |
80 | 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); |
81 | glTexParameteri (GL_TEXTURE_2D, GL_GENERATE_MIPMAP, GL_TRUE); |
63 | glTexParameteri (GL_TEXTURE_2D, GL_GENERATE_MIPMAP, GL_TRUE); |
82 | glTexImage2D (GL_TEXTURE_2D, |
64 | glTexImage2D (GL_TEXTURE_2D, |
83 | 0, |
65 | 0, |
84 | 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); |
85 | SDL_FreeSurface (image); /* No longer needed */ |
67 | SDL_FreeSurface (image); /* No longer needed */ |
86 | |
68 | |
87 | return name; |
69 | return name; |
88 | } |
70 | } |
89 | |
71 | |
90 | test_material::test_material () |
72 | void material::enable (view &ctx) |
91 | : tex ("textures/osama.jpg"), texvar (tex.name) |
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92 | { |
73 | { |
93 | using namespace shader; |
74 | pass::matmap_t &matmap = ctx.pass_data->matmap; |
94 | |
75 | |
95 | p.vsh->start (); |
76 | pass::matmap_t::iterator i = matmap.find (this); |
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77 | shader::program_object *p; |
96 | |
78 | |
97 | temp_4f lightpos; |
79 | if (i == matmap.end ()) |
98 | temp_4f wpos; |
80 | { |
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81 | shader::program_object po; |
99 | |
82 | |
100 | //lightpos = shader::vec4 (0, 10, 0, 1); |
83 | shader::shader_builder::start (); |
101 | vout.position = shader::gl.model_view_projection_matrix * vin.vertex; |
84 | vsh (ctx); |
102 | vout.tex_coord[0] = vin.tex_coord[0]; |
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103 | //vout.tex_coord[1] = normalize (lightpos - wpos); |
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104 | //vout.tex_coord[2] = normalize (wpos); |
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105 | //vout.tex_coord[3] = normalize (xyz (gl.model_view_matrix_inverse_transpose) * vin.normal); |
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106 | //vout.tex_coord[4] = normalize (xyz (gl.projection_matrix_inverse_transpose) - wpos); |
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107 | |
85 | |
108 | p.vsh->end (); |
86 | if (ctx.pass_data->l) |
109 | p.vsh->compile (); |
87 | ctx.pass_data->l->vsh (); |
110 | |
88 | |
111 | fragment_shader fsh; |
89 | po->vsh->compile (shader::shader_builder::stop ()); |
112 | |
90 | |
113 | p.fsh->start (); |
91 | shader::shader_builder::start (); |
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92 | shader::compile::fout.frag_color = shader::compile::float4 (1., 1., 0., 1.); |
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93 | fsh (ctx); |
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94 | po->fsh->compile (shader::shader_builder::stop ()); |
114 | |
95 | |
115 | xyz(fout.frag_color) = texture_2d (texvar, fin.tex_coord[0]); |
96 | po->link (); |
116 | |
97 | |
117 | p.fsh->end (); |
98 | matmap.insert (pass::matmap_t::value_type (this, po)); |
118 | p.fsh->compile (); |
99 | |
119 | p.link (); |
100 | p = &po; |
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101 | } |
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102 | else |
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103 | p = &i->second; |
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104 | |
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105 | (*p)->enable (); |
120 | } |
106 | } |
121 | |
107 | |
122 | void test_material::enable () |
108 | void material::disable (view &ctx) |
123 | { |
109 | { |
124 | p.enable (); |
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125 | texvar->enable (); |
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126 | } |
110 | } |
127 | |
111 | |
128 | void test_material::disable () |
112 | test_material::test_material () |
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113 | //: tex ("textures/osama.jpg"), texvar (tex.name) |
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114 | : tex ("textures/rockwall.jpg"), texvar (tex.name) |
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115 | , norm ("textures/rockwall_normal.jpg"), normvar (norm.name) |
129 | { |
116 | { |
130 | texvar->disable (); |
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131 | p.disable (); |
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132 | } |
117 | } |
133 | |
118 | |
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119 | static shader::varying_3f normal, lightvec; |
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120 | static shader::varying_2f texcoord; |
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121 | |
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122 | void test_material::vsh (view &ctx) |
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123 | { |
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124 | using namespace shader::compile; |
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125 | |
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126 | std_vsh (); |
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127 | |
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128 | if (ctx.pass_data->l) |
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129 | { |
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130 | texcoord = xy (vin.tex_coord[0]); |
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131 | normal = normal_matrix * vin.normal; |
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132 | lightvec = xyz (ctx.pass_data->l->lightpos - model_view_matrix * vin.vertex); |
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133 | } |
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134 | } |
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135 | |
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136 | void test_material::fsh (view &ctx) |
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137 | { |
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138 | using namespace shader::compile; |
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139 | |
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140 | if (ctx.pass_data->l) |
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141 | { |
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142 | temp_3f lc; |
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143 | temp_1f fac; |
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144 | |
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145 | lc = (*ctx.pass_data->l)(); |
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146 | |
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147 | temp_3f rot1, rot2, rot3; |
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148 | |
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149 | rot1 = yxz (texture_2d (normvar, texcoord) * 2.F - 1.F); |
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150 | rot2 = float3 (x(rot1), z(rot1), -y(rot1)); |
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151 | rot3 = float3 (y(rot1), -x(rot1), z(rot1)); |
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152 | |
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153 | normal = mat3 (rot1, rot2, rot3) * normal; |
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154 | |
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155 | fac = dot (normalize (normal), normalize (lightvec)); |
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156 | fac = pow (max (fac, 0.0), 6); |
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157 | xyz (fout.frag_color) = (texture_2d (texvar, texcoord) + 0.2F) * lc * fac; |
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158 | } |
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159 | } |
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160 | |
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161 | void test_material::enable (view &ctx) |
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162 | { |
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163 | material::enable (ctx); |
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164 | texvar->enable (); |
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165 | normvar->enable (); |
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166 | } |
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167 | |
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168 | void test_material::disable (view &ctx) |
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169 | { |
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170 | normvar->disable (); |
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171 | texvar->disable (); |
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172 | material::disable (ctx); |
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173 | } |
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174 | |
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175 | test_material *testmat; |
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176 | |