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6 | #include "opengl.h" |
6 | #include "opengl.h" |
7 | #include "material.h" |
7 | #include "material.h" |
8 | #include "view.h" |
8 | #include "view.h" |
9 | #include "util.h" |
9 | #include "util.h" |
10 | |
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11 | material::~material () |
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12 | { |
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13 | } |
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14 | |
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15 | void |
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16 | simple_material::enable (view &ctx) |
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17 | { |
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18 | glMaterialfv (GL_FRONT, GL_DIFFUSE, (GLfloat *) & diffuse); |
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19 | glMaterialfv (GL_FRONT, GL_SPECULAR, (GLfloat *) & specular); |
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20 | glMaterialfv (GL_FRONT, GL_EMISSION, (GLfloat *) & emission); |
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21 | glMaterialf (GL_FRONT, GL_SHININESS, shininess); |
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22 | } |
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23 | |
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24 | void |
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25 | simple_material::disable (view &ctx) |
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26 | { |
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27 | } |
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28 | |
10 | |
29 | GLuint |
11 | GLuint |
30 | texture::load_texture (SDL_Surface * surface, GLfloat * tex2oord) |
12 | texture::load_texture (SDL_Surface * surface, GLfloat * tex2oord) |
31 | { |
13 | { |
32 | GLuint name; |
14 | GLuint name; |
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81 | SDL_FreeSurface (image); /* No longer needed */ |
63 | SDL_FreeSurface (image); /* No longer needed */ |
82 | |
64 | |
83 | return name; |
65 | return name; |
84 | } |
66 | } |
85 | |
67 | |
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68 | material::~material () |
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69 | { |
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70 | } |
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71 | |
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72 | void material::enable (view &ctx) |
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73 | { |
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74 | pass_data::matmap_t &matmap = ctx.pass->matmap; |
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75 | |
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76 | pass_data::matmap_t::iterator i = matmap.find (this); |
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77 | |
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78 | if (i == matmap.end ()) |
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79 | { |
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80 | string vsh_src, fsh_src; |
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81 | |
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82 | shader::shader_builder::start (); |
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83 | |
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84 | if (ctx.pass->l) |
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85 | ctx.pass->l->vsh (); |
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86 | |
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87 | vsh (ctx); |
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88 | |
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89 | // compute logarithmic depth - see the frustum matrix in view.C |
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90 | { |
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91 | using namespace shader::compile; |
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92 | |
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93 | temp_1f lz; |
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94 | |
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95 | // TODO: negative z is not calculated in an acceptable way, clipping does horrible things(?) |
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96 | lz = z (vout.position); |
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97 | lz = ifelse (lz <= 0, |
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98 | lz, |
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99 | log (lz + 1) / log (1e10 + 1) |
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100 | ) - 1; |
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101 | z (vout.position) = lz * w (vout.position); |
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102 | } |
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103 | |
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104 | vsh_src = shader::shader_builder::stop (); |
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105 | |
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106 | shader::shader_builder::start (); |
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107 | |
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108 | if (ctx.pass->l) |
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109 | { |
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110 | ctx.pass->l->fsh (); |
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111 | fsh (ctx); |
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112 | } |
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113 | else |
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114 | // many drivers need both vertex and fragment shader, 'caboom!' otherwise |
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115 | shader::compile::fout.frag_color = shader::compile::float4 (0., 0., 0., 0.); |
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116 | |
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117 | fsh_src = shader::shader_builder::stop (); |
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118 | |
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119 | shader::program_object po = shader::get_program (vsh_src, fsh_src); |
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120 | matmap.insert (pass_data::matmap_t::value_type (this, po)); |
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121 | |
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122 | po->enable (); |
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123 | } |
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124 | else |
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125 | i->second->enable (); |
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126 | |
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127 | if (ctx.pass->l) |
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128 | ctx.pass->l->enable (); |
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129 | } |
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130 | |
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131 | void material::disable (view &ctx) |
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132 | { |
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133 | } |
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134 | |
86 | test_material::test_material () |
135 | test_material::test_material () |
87 | //: tex ("textures/osama.jpg"), texvar (tex.name) |
136 | //: tex ("textures/osama.jpg"), texvar (tex.name) |
88 | : tex ("textures/rockwall.jpg"), texvar (tex.name) |
137 | : tex ("textures/rockwall.jpg"), texvar (tex.name) |
89 | , norm ("textures/rockwall_height.jpg"), normvar (norm.name) |
138 | , norm ("textures/rockwall_normal.jpg"), normvar (norm.name) |
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139 | { |
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140 | } |
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141 | |
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142 | static shader::varying_3f normal; |
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143 | static shader::varying_2f texcoord; |
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144 | |
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145 | void test_material::vsh (view &ctx) |
90 | { |
146 | { |
91 | using namespace shader::compile; |
147 | using namespace shader::compile; |
92 | |
148 | |
93 | p.vsh->start (); |
149 | std_vsh (); |
94 | |
150 | |
95 | temp_4f wpos; |
151 | if (ctx.pass->l) |
96 | varying_1f camdist; |
152 | { |
97 | varying_3f lightvec; |
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98 | |
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99 | wpos = model_view_projection_matrix * vin.vertex; |
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100 | |
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101 | //wpos = wpos / abs (w (wpos)); |
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102 | |
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103 | vout.position = wpos; |
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104 | vout.tex_coord[0] = vin.tex_coord[0]; |
153 | texcoord = xy (vin.tex_coord[0]); |
105 | xyz (vout.tex_coord[1]) = normal_matrix * vin.normal; |
154 | normal = normal_matrix * vin.normal; |
106 | lightvec = xyz (lightpos - model_view_matrix * vin.vertex); |
155 | } |
107 | camdist = 1 - max (length (xyz (vout.tex_coord[2])) / 10000., 0); |
156 | } |
108 | |
157 | |
109 | p.vsh->end (); |
158 | void test_material::fsh (view &ctx) |
110 | p.vsh->compile (); |
159 | { |
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160 | using namespace shader::compile; |
111 | |
161 | |
112 | p.fsh->start (); |
162 | if (ctx.pass->l) |
113 | |
163 | { |
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164 | temp_3f lc; |
114 | temp_1f fac; |
165 | temp_1f fac; |
115 | temp_2f disp; |
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116 | temp_1f dx, dy; |
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117 | temp_1f bumpnormal; |
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118 | temp_1f dist; |
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119 | |
166 | |
120 | fac = dot (normalize (xyz (fin.tex_coord[1])), normalize (lightvec)); |
167 | temp_3f rot1, rot2, rot3; |
121 | //fac = dot (shader::compile::vec3 (normalize (fin.tex_coord[1]) + normalize (fin.tex_coord[2])) * 0.5, bumpnormal); |
168 | |
122 | //fac = dot (bumpnormal, normalize (fin.tex_coord[2])); |
169 | yxz (rot1) = (texture_2d (normvar, texcoord) * 2.F - 1.F); |
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170 | |
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171 | //rot1 = normal_matrix * rot1; |
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172 | |
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173 | rot2 = float3 (x(rot1), z(rot1), -y(rot1)); |
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174 | rot3 = float3 (y(rot1), -x(rot1), z(rot1)); |
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175 | |
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176 | normal = mat3 (rot1, rot2, rot3) * normal; |
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177 | |
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178 | fac = dot (normalize (normal), normalize (ctx.pass->l->sh_lightvec)); |
123 | //fac = pow (max (fac, 0.0), 8); |
179 | fac = max (pow (max (fac, 0.0), 6), 0.3); |
124 | xyz (fout.frag_color) = (texture_2d (texvar, fin.tex_coord[0] - disp)) * max (fac * (0.4 + 1.F * camdist), 0); |
180 | xyz (fout.frag_color) = (texture_2d (texvar, texcoord) + 0.2F) * fac |
125 | |
181 | * ctx.pass->l->sh_colour; |
126 | p.fsh->end (); |
182 | //xyz (fout.frag_color) = lc * fac; |
127 | p.fsh->compile (); |
183 | } |
128 | p.link (); |
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129 | } |
184 | } |
130 | |
185 | |
131 | void test_material::enable (view &ctx) |
186 | void test_material::enable (view &ctx) |
132 | { |
187 | { |
133 | p.enable (); |
188 | material::enable (ctx); |
134 | lightpos->set (vec3 (0, 0, 0)); |
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135 | texvar->enable (); |
189 | texvar->enable (); |
136 | normvar->enable (); |
190 | normvar->enable (); |
137 | } |
191 | } |
138 | |
192 | |
139 | void test_material::disable (view &ctx) |
193 | void test_material::disable (view &ctx) |
140 | { |
194 | { |
141 | normvar->disable (); |
195 | normvar->disable (); |
142 | texvar->disable (); |
196 | texvar->disable (); |
143 | p.disable (); |
197 | material::disable (ctx); |
144 | } |
198 | } |
145 | |
199 | |
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200 | test_material *testmat; |
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201 | |