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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 | |
10 | |
15 | GLuint |
11 | GLuint |
16 | texture::load_texture (SDL_Surface * surface, GLfloat * tex2oord) |
12 | texture::load_texture (SDL_Surface * surface, GLfloat * tex2oord) |
17 | { |
13 | { |
18 | GLuint name; |
14 | GLuint name; |
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67 | SDL_FreeSurface (image); /* No longer needed */ |
63 | SDL_FreeSurface (image); /* No longer needed */ |
68 | |
64 | |
69 | return name; |
65 | return name; |
70 | } |
66 | } |
71 | |
67 | |
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68 | material::~material () |
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69 | { |
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70 | } |
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71 | |
72 | void material::enable (view &ctx) |
72 | void material::enable (view &ctx) |
73 | { |
73 | { |
74 | pass::matmap_t &matmap = ctx.pass_data->matmap; |
74 | pass_data::matmap_t &matmap = ctx.pass->matmap; |
75 | |
75 | |
76 | pass::matmap_t::iterator i = matmap.find (this); |
76 | pass_data::matmap_t::iterator i = matmap.find (this); |
77 | shader::program_object *p; |
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78 | |
77 | |
79 | if (i == matmap.end ()) |
78 | if (i == matmap.end ()) |
80 | { |
79 | { |
81 | shader::program_object po; |
80 | string vsh_src, fsh_src; |
82 | |
81 | |
83 | shader::shader_builder::start (); |
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 | |
84 | vsh (ctx); |
87 | vsh (ctx); |
85 | |
88 | |
86 | if (ctx.pass_data->l) |
89 | // compute logarithmic depth - see the frustum matrix in view.C |
87 | ctx.pass_data->l->vsh (); |
90 | { |
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91 | using namespace shader::compile; |
88 | |
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 |
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96 | lz = z (vout.position); |
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97 | z (vout.position) = (log2 (lz) * (2 / log2 (1e10)) - 1) * w (vout.position); |
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98 | #if 0 |
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99 | z (vout.position) = |
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100 | ifelse ( |
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101 | z < 0, |
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102 | -1, |
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103 | log2 (lz) * (2 / log2 (1e10)) - 1 |
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104 | ) * w (vout.position); |
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105 | #endif |
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106 | } |
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107 | |
89 | po->vsh->compile (shader::shader_builder::stop ()); |
108 | vsh_src = shader::shader_builder::stop (); |
90 | |
109 | |
91 | shader::shader_builder::start (); |
110 | shader::shader_builder::start (); |
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111 | |
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112 | if (ctx.pass->l) |
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113 | { |
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114 | ctx.pass->l->fsh (); |
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115 | |
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116 | fsh (ctx); |
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117 | } |
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118 | else |
92 | shader::compile::fout.frag_color = shader::compile::float4 (1., 1., 0., 1.); |
119 | shader::compile::fout.frag_color = shader::compile::float4 (1., 0., 1., 1.); |
93 | fsh (ctx); |
120 | |
94 | po->fsh->compile (shader::shader_builder::stop ()); |
121 | fsh_src = shader::shader_builder::stop (); |
95 | |
122 | |
96 | po->link (); |
123 | shader::program_object po = shader::get_program (vsh_src, fsh_src); |
97 | |
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98 | matmap.insert (pass::matmap_t::value_type (this, po)); |
124 | matmap.insert (pass_data::matmap_t::value_type (this, po)); |
99 | |
125 | |
100 | p = &po; |
126 | po->enable (); |
101 | } |
127 | } |
102 | else |
128 | else |
103 | p = &i->second; |
129 | i->second->enable (); |
104 | |
130 | |
105 | (*p)->enable (); |
131 | if (ctx.pass->l) |
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132 | ctx.pass->l->enable (); |
106 | } |
133 | } |
107 | |
134 | |
108 | void material::disable (view &ctx) |
135 | void material::disable (view &ctx) |
109 | { |
136 | { |
110 | } |
137 | } |
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114 | : tex ("textures/rockwall.jpg"), texvar (tex.name) |
141 | : tex ("textures/rockwall.jpg"), texvar (tex.name) |
115 | , norm ("textures/rockwall_normal.jpg"), normvar (norm.name) |
142 | , norm ("textures/rockwall_normal.jpg"), normvar (norm.name) |
116 | { |
143 | { |
117 | } |
144 | } |
118 | |
145 | |
119 | static shader::varying_3f normal, lightvec; |
146 | static shader::varying_3f normal; |
120 | static shader::varying_2f texcoord; |
147 | static shader::varying_2f texcoord; |
121 | |
148 | |
122 | void test_material::vsh (view &ctx) |
149 | void test_material::vsh (view &ctx) |
123 | { |
150 | { |
124 | using namespace shader::compile; |
151 | using namespace shader::compile; |
125 | |
152 | |
126 | std_vsh (); |
153 | std_vsh (); |
127 | |
154 | |
128 | if (ctx.pass_data->l) |
155 | if (ctx.pass->l) |
129 | { |
156 | { |
130 | texcoord = xy (vin.tex_coord[0]); |
157 | texcoord = xy (vin.tex_coord[0]); |
131 | normal = normal_matrix * vin.normal; |
158 | normal = normal_matrix * vin.normal; |
132 | lightvec = xyz (ctx.pass_data->l->lightpos - model_view_matrix * vin.vertex); |
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133 | } |
159 | } |
134 | } |
160 | } |
135 | |
161 | |
136 | void test_material::fsh (view &ctx) |
162 | void test_material::fsh (view &ctx) |
137 | { |
163 | { |
138 | using namespace shader::compile; |
164 | using namespace shader::compile; |
139 | |
165 | |
140 | if (ctx.pass_data->l) |
166 | if (ctx.pass->l) |
141 | { |
167 | { |
142 | temp_3f lc; |
168 | temp_3f lc; |
143 | temp_1f fac; |
169 | temp_1f fac; |
144 | |
170 | |
145 | lc = (*ctx.pass_data->l)(); |
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146 | |
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147 | temp_3f rot1, rot2, rot3; |
171 | temp_3f rot1, rot2, rot3; |
148 | |
172 | |
149 | rot1 = yxz (texture_2d (normvar, texcoord) * 2.F - 1.F); |
173 | yxz (rot1) = (texture_2d (normvar, texcoord) * 2.F - 1.F); |
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174 | |
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175 | //rot1 = normal_matrix * rot1; |
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176 | |
150 | rot2 = float3 (x(rot1), -z(rot1), y(rot1)); |
177 | rot2 = float3 (x(rot1), z(rot1), -y(rot1)); |
151 | rot3 = float3 (-y(rot1), x(rot1), z(rot1)); |
178 | rot3 = float3 (y(rot1), -x(rot1), z(rot1)); |
152 | |
179 | |
153 | normal = mat3 (rot1, rot2, rot3) * normal; |
180 | normal = mat3 (rot1, rot2, rot3) * normal; |
154 | |
181 | |
155 | fac = dot (normalize (normal), normalize (lightvec)); |
182 | fac = dot (normalize (normal), normalize (ctx.pass->l->sh_lightvec)); |
156 | fac = pow (max (fac, 0.0), 6); |
183 | fac = max (pow (max (fac, 0.0), 6), 0.3); |
157 | xyz (fout.frag_color) = (texture_2d (texvar, texcoord) + 0.2F) * lc * fac; |
184 | xyz (fout.frag_color) = (texture_2d (texvar, texcoord) + 0.2F) * fac |
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185 | * ctx.pass->l->sh_colour; |
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186 | //xyz (fout.frag_color) = lc * fac; |
158 | } |
187 | } |
159 | } |
188 | } |
160 | |
189 | |
161 | void test_material::enable (view &ctx) |
190 | void test_material::enable (view &ctx) |
162 | { |
191 | { |