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1 | #include <cstdlib> |
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2 | #include <cstring> |
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3 | |
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4 | #include <algorithm> |
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5 | |
1 | #include "opengl.h" |
6 | #include "opengl.h" |
2 | #include "material.h" |
7 | #include "material.h" |
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8 | #include "view.h" |
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9 | #include "util.h" |
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10 | |
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11 | GLuint |
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12 | texture::load_texture (SDL_Surface * surface, GLfloat * tex2oord) |
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13 | { |
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14 | GLuint name; |
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15 | SDL_Surface *image; |
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16 | SDL_Rect area; |
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17 | Uint32 saved_flags; |
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18 | Uint8 saved_alpha; |
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19 | |
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20 | /* Use the surface width and height expanded to powers of 2 */ |
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21 | tex2oord[0] = 0.F; /* Min X */ |
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22 | tex2oord[1] = 0.F; /* Min Y */ |
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23 | tex2oord[2] = 1.F; /* Max X */ |
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24 | tex2oord[3] = 1.F; /* Max Y */ |
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25 | |
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26 | image = SDL_CreateRGBSurface (SDL_SWSURFACE, surface->w, surface->h, 32, |
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27 | #if SDL_BYTEORDER == SDL_LIL_ENDIAN /* OpenGL RGBA masks */ |
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28 | 0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000 |
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29 | #else |
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30 | 0xFF000000, 0x00FF0000, 0x0000FF00, 0x000000FF |
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31 | #endif |
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32 | ); |
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33 | |
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34 | if (image == NULL) |
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35 | return 0; |
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36 | |
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37 | /* Save the alpha blending attributes */ |
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38 | saved_flags = surface->flags & (SDL_SRCALPHA | SDL_RLEACCELOK); |
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39 | saved_alpha = surface->format->alpha; |
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40 | if ((saved_flags & SDL_SRCALPHA) == SDL_SRCALPHA) |
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41 | SDL_SetAlpha (surface, 0, 0); |
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42 | |
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43 | /* Copy the surface into the GL texture image */ |
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44 | area.x = 0; |
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45 | area.y = 0; |
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46 | area.w = surface->w; |
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47 | area.h = surface->h; |
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48 | SDL_BlitSurface (surface, &area, image, &area); |
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49 | |
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50 | /* Restore the alpha blending attributes */ |
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51 | if ((saved_flags & SDL_SRCALPHA) == SDL_SRCALPHA) |
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52 | SDL_SetAlpha (surface, saved_flags, saved_alpha); |
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53 | |
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54 | /* Create an OpenGL texture for the image */ |
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55 | glGenTextures (1, &name); |
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56 | glBindTexture (GL_TEXTURE_2D, name); |
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57 | glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); |
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58 | glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR); |
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59 | glTexParameteri (GL_TEXTURE_2D, GL_GENERATE_MIPMAP, GL_TRUE); |
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60 | glTexImage2D (GL_TEXTURE_2D, |
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61 | 0, |
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62 | GL_RGBA, surface->w, surface->h, 0, GL_RGBA, GL_UNSIGNED_BYTE, image->pixels); |
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63 | SDL_FreeSurface (image); /* No longer needed */ |
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64 | |
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65 | return name; |
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66 | } |
3 | |
67 | |
4 | material::~material () |
68 | material::~material () |
5 | { |
69 | { |
6 | } |
70 | } |
7 | |
71 | |
8 | void simple_material::begin () |
72 | void material::enable (view &ctx) |
9 | { |
73 | { |
10 | glMaterialfv (GL_FRONT, GL_DIFFUSE, (GLfloat *)&diffuse); |
74 | static shader::compile::varying_1f Z;//D |
11 | glMaterialfv (GL_FRONT, GL_SPECULAR, (GLfloat *)&specular); |
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12 | glMaterialfv (GL_FRONT, GL_EMISSION, (GLfloat *)&emission); |
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13 | glMaterialf (GL_FRONT, GL_SHININESS, shininess); |
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14 | } |
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15 | |
75 | |
16 | void simple_material::end () |
76 | pass::matmap_t &matmap = ctx.pass_data->matmap; |
17 | { |
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18 | } |
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19 | |
77 | |
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78 | pass::matmap_t::iterator i = matmap.find (this); |
20 | |
79 | |
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80 | if (i == matmap.end ()) |
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81 | { |
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82 | string vsh_src, fsh_src; |
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83 | |
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84 | shader::shader_builder::start (); |
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85 | |
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86 | if (ctx.pass_data->l) |
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87 | ctx.pass_data->l->vsh (); |
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88 | |
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89 | vsh (ctx); |
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90 | |
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91 | { |
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92 | using namespace shader::compile; |
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93 | |
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94 | Z = pow (z (vout.position) / 2.F, 0.2); |
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95 | z (vout.position) = (Z * 2 - 1) * w (vout.position); |
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96 | //z (vout.position) = z (vout.position) - 1; |
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97 | } |
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98 | |
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99 | vsh_src = shader::shader_builder::stop (); |
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100 | |
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101 | shader::shader_builder::start (); |
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102 | |
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103 | if (ctx.pass_data->l) |
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104 | { |
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105 | ctx.pass_data->l->fsh (); |
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106 | |
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107 | fsh (ctx); |
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108 | } |
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109 | else |
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110 | shader::compile::fout.frag_color = shader::compile::float4 (1., 0., 1., 1.); |
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111 | |
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112 | { |
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113 | using namespace shader::compile; |
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114 | //x (fout.frag_color) = Z;//D |
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115 | //y (fout.frag_color) = Z;//D |
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116 | //z (fout.frag_color) = Z;//D |
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117 | } |
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118 | |
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119 | fsh_src = shader::shader_builder::stop (); |
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120 | |
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121 | shader::program_object po = shader::get_program (vsh_src, fsh_src); |
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122 | matmap.insert (pass::matmap_t::value_type (this, po)); |
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123 | |
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124 | po->enable (); |
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125 | } |
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126 | else |
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127 | i->second->enable (); |
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128 | } |
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129 | |
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130 | void material::disable (view &ctx) |
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131 | { |
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132 | } |
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133 | |
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134 | test_material::test_material () |
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135 | //: tex ("textures/osama.jpg"), texvar (tex.name) |
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136 | : tex ("textures/rockwall.jpg"), texvar (tex.name) |
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137 | , norm ("textures/rockwall_normal.jpg"), normvar (norm.name) |
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138 | { |
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139 | } |
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140 | |
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141 | static shader::varying_3f normal; |
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142 | static shader::varying_2f texcoord; |
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143 | |
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144 | void test_material::vsh (view &ctx) |
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145 | { |
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146 | using namespace shader::compile; |
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147 | |
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148 | std_vsh (); |
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149 | |
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150 | if (ctx.pass_data->l) |
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151 | { |
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152 | texcoord = xy (vin.tex_coord[0]); |
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153 | normal = normal_matrix * vin.normal; |
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154 | } |
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155 | } |
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156 | |
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157 | void test_material::fsh (view &ctx) |
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158 | { |
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159 | using namespace shader::compile; |
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160 | |
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161 | if (ctx.pass_data->l) |
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162 | { |
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163 | temp_3f lc; |
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164 | temp_1f fac; |
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165 | |
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166 | temp_3f rot1, rot2, rot3; |
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167 | |
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168 | yxz (rot1) = (texture_2d (normvar, texcoord) * 2.F - 1.F); |
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169 | |
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170 | //rot1 = normal_matrix * rot1; |
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171 | |
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172 | rot2 = float3 (x(rot1), z(rot1), -y(rot1)); |
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173 | rot3 = float3 (y(rot1), -x(rot1), z(rot1)); |
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174 | |
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175 | normal = mat3 (rot1, rot2, rot3) * normal; |
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176 | |
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177 | fac = dot (normalize (normal), normalize (ctx.pass_data->l->sh_lightvec)); |
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178 | fac = max (pow (max (fac, 0.0), 6), 0.3); |
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179 | xyz (fout.frag_color) = (texture_2d (texvar, texcoord) + 0.2F) * fac |
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180 | * ctx.pass_data->l->sh_colour; |
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181 | //xyz (fout.frag_color) = lc * fac; |
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182 | } |
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183 | } |
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184 | |
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185 | void test_material::enable (view &ctx) |
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186 | { |
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187 | material::enable (ctx); |
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188 | texvar->enable (); |
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189 | normvar->enable (); |
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190 | } |
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191 | |
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192 | void test_material::disable (view &ctx) |
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193 | { |
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194 | normvar->disable (); |
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195 | texvar->disable (); |
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196 | material::disable (ctx); |
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197 | } |
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198 | |
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199 | test_material *testmat; |
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200 | |