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5153 | IgorA | 1 | ;include 'msghandling.inc' |
2 | |||
3 | align 4 |
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4 | proc glopMaterial, context:dword, p:dword |
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5 | ; int mode=p[1].i; |
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6 | ; int type=p[2].i; |
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7 | ; float *v=&p[3].f; |
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8 | ; int i; |
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9 | ; GLMaterial *m; |
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10 | |||
11 | ; if (mode == GL_FRONT_AND_BACK) { |
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12 | ; p[1].i=GL_FRONT; |
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13 | ; glopMaterial(c,p); |
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14 | ; mode=GL_BACK; |
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15 | ; } |
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16 | ; if (mode == GL_FRONT) m=&c->materials[0]; |
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17 | ; else m=&c->materials[1]; |
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18 | |||
19 | ; switch(type) { |
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20 | ; case GL_EMISSION: |
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21 | ; for(i=0;i<4;i++) |
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22 | ; m->emission.v[i]=v[i]; |
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23 | ; break; |
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24 | ; case GL_AMBIENT: |
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25 | ; for(i=0;i<4;i++) |
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26 | ; m->ambient.v[i]=v[i]; |
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27 | ; break; |
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28 | ; case GL_DIFFUSE: |
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29 | ; for(i=0;i<4;i++) |
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30 | ; m->diffuse.v[i]=v[i]; |
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31 | ; break; |
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32 | ; case GL_SPECULAR: |
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33 | ; for(i=0;i<4;i++) |
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34 | ; m->specular.v[i]=v[i]; |
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35 | ; break; |
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36 | ; case GL_SHININESS: |
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37 | ; m->shininess=v[0]; |
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38 | ; m->shininess_i = (v[0]/128.0f)*SPECULAR_BUFFER_RESOLUTION; |
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39 | ; break; |
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40 | ; case GL_AMBIENT_AND_DIFFUSE: |
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41 | ; for(i=0;i<4;i++) |
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42 | ; m->diffuse.v[i]=v[i]; |
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43 | ; for(i=0;i<4;i++) |
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44 | ; m->ambient.v[i]=v[i]; |
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45 | ; break; |
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46 | ; default: |
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47 | ; assert(0); |
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48 | ; } |
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49 | ret |
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50 | endp |
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51 | |||
52 | align 4 |
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53 | proc glopColorMaterial uses eax ebx ecx, context:dword, p:dword |
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54 | mov eax,[context] |
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55 | mov ebx,[p] |
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56 | mov ecx,[ebx+4] ;ecx = p[1] |
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57 | mov dword[eax+offs_cont_current_color_material_mode],ecx |
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58 | mov ecx,[ebx+8] ;ecx = p[2] |
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59 | mov dword[eax+offs_cont_current_color_material_type],ecx |
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60 | ret |
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61 | endp |
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62 | |||
63 | ;void glopLight(GLContext *c,GLParam *p) |
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64 | ;{ |
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65 | ; int light=p[1].i; |
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66 | ; int type=p[2].i; |
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67 | ; V4 v; |
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68 | ; GLLight *l; |
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69 | ; int i; |
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70 | ; |
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71 | ; assert(light >= GL_LIGHT0 && light < GL_LIGHT0+MAX_LIGHTS ); |
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72 | ; |
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73 | ; l=&c->lights[light-GL_LIGHT0]; |
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74 | ; |
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75 | ; for(i=0;i<4;i++) v.v[i]=p[3+i].f; |
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76 | ; |
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77 | ; switch(type) { |
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78 | ; case GL_AMBIENT: |
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79 | ; l->ambient=v; |
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80 | ; break; |
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81 | ; case GL_DIFFUSE: |
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82 | ; l->diffuse=v; |
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83 | ; break; |
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84 | ; case GL_SPECULAR: |
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85 | ; l->specular=v; |
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86 | ; break; |
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87 | ; case GL_POSITION: |
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88 | ; { |
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89 | ; V4 pos; |
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90 | ; gl_M4_MulV4(&pos,c->matrix_stack_ptr[0],&v); |
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91 | ; |
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92 | ; l->position=pos; |
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93 | ; |
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94 | ; if (l->position.v[3] == 0) { |
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95 | ; l->norm_position.X=pos.X; |
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96 | ; l->norm_position.Y=pos.Y; |
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97 | ; l->norm_position.Z=pos.Z; |
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98 | ; |
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99 | ; gl_V3_Norm(&l->norm_position); |
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100 | ; } |
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101 | ; } |
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102 | ; break; |
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103 | ; case GL_SPOT_DIRECTION: |
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104 | ; for(i=0;i<3;i++) { |
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105 | ; l->spot_direction.v[i]=v.v[i]; |
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106 | ; l->norm_spot_direction.v[i]=v.v[i]; |
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107 | ; } |
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108 | ; gl_V3_Norm(&l->norm_spot_direction); |
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109 | ; break; |
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110 | ; case GL_SPOT_EXPONENT: |
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111 | ; l->spot_exponent=v.v[0]; |
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112 | ; break; |
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113 | ; case GL_SPOT_CUTOFF: |
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114 | ; { |
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115 | ; float a=v.v[0]; |
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116 | ; assert(a == 180 || (a>=0 && a<=90)); |
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117 | ; l->spot_cutoff=a; |
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118 | ; if (a != 180) l->cos_spot_cutoff=cos(a * M_PI / 180.0); |
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119 | ; } |
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120 | ; break; |
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121 | ; case GL_CONSTANT_ATTENUATION: |
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122 | ; l->attenuation[0]=v.v[0]; |
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123 | ; break; |
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124 | ; case GL_LINEAR_ATTENUATION: |
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125 | ; l->attenuation[1]=v.v[0]; |
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126 | ; break; |
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127 | ; case GL_QUADRATIC_ATTENUATION: |
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128 | ; l->attenuation[2]=v.v[0]; |
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129 | ; break; |
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130 | ; default: |
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131 | ; assert(0); |
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132 | ; } |
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133 | ;} |
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134 | |||
135 | align 4 |
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136 | proc glopLightModel uses ebx ecx esi edi, context:dword, p:dword |
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137 | mov edi,[context] |
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138 | mov ebx,[p] |
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139 | mov esi,[ebx+8] |
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140 | |||
141 | cmp dword[ebx+4],GL_LIGHT_MODEL_AMBIENT |
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142 | jne @f |
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143 | mov ecx,4 |
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144 | mov edi,dword[edi+offs_cont_ambient_light_model] |
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145 | rep movsd ;for(i=0;i<4;i++) context.ambient_light_model.v[i]=v[i] |
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146 | jmp .end_f |
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147 | @@: |
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148 | cmp dword[ebx+4],GL_LIGHT_MODEL_LOCAL_VIEWER |
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149 | jne @f |
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150 | fld dword[esi] ;st0 = p[2].v[0] |
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151 | fistp dword[edi+offs_cont_local_light_model] |
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152 | jmp .end_f |
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153 | @@: |
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154 | cmp dword[ebx+4],GL_LIGHT_MODEL_TWO_SIDE |
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155 | jne @f |
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156 | fld dword[esi] ;st0 = p[2].v[0] |
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157 | fistp dword[edi+offs_cont_light_model_two_side] |
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158 | jmp .end_f |
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159 | @@: ;default: |
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160 | ; tgl_warning("glopLightModel: illegal pname: 0x%x\n", dword[ebx+4]); |
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161 | ; //assert(0); |
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162 | .end_f: |
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163 | ret |
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164 | endp |
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165 | |||
166 | ;static inline float clampf(float a,float min,float max) |
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167 | ;{ |
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168 | ; if (a |
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169 | ; else if (a>max) return max; |
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170 | ; else return a; |
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171 | ;} |
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172 | |||
173 | align 4 |
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174 | proc gl_enable_disable_light uses eax ebx ecx, context:dword, light:dword, v:dword |
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175 | mov eax,[context] |
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176 | mov ebx,[light] |
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177 | imul ebx,sizeof.GLLight |
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178 | add ebx,[eax+offs_cont_lights] |
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179 | |||
180 | xor ecx,ecx |
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181 | cmp dword[ebx+offs_ligh_enabled],0 |
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182 | jne @f |
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183 | not ecx |
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184 | @@: |
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185 | and ecx,[v] |
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186 | cmp ecx,0 |
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187 | je @f |
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188 | ;if (v && !l.enabled) |
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189 | mov dword[ebx+offs_ligh_enabled],1 |
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190 | mov ecx,[eax+offs_cont_first_light] |
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191 | mov [ebx+offs_ligh_next],ecx |
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192 | mov [eax+offs_cont_first_light],ebx ;context.first_light = l |
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193 | mov dword[ebx+offs_ligh_prev],0 ;l.prev = NULL |
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194 | jmp .end_f |
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195 | @@: |
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196 | xor ecx,ecx |
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197 | cmp dword[v],0 |
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198 | jne @f |
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199 | not ecx |
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200 | @@: |
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201 | and ecx,[ebx+offs_ligh_enabled] |
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202 | cmp ecx,0 |
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203 | je .end_f |
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204 | ;else if (!v && l.enabled) |
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205 | mov dword[ebx+offs_ligh_enabled],0 ;l.enabled = 0 |
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206 | mov ecx,[ebx+offs_ligh_next] |
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207 | cmp dword[ebx+offs_ligh_prev],0 ;if (l.prev == NULL) |
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208 | jne .els_0 |
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209 | mov [eax+offs_cont_first_light],ecx ;context.first_light = l.next |
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210 | jmp @f |
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211 | .els_0: |
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212 | mov eax,[ebx+offs_ligh_prev] |
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213 | mov [eax+offs_ligh_next],ecx ;l.prev.next = l.next |
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214 | @@: |
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215 | cmp dword[ebx+offs_ligh_next],0 |
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216 | je .end_f |
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217 | mov ecx,[ebx+offs_ligh_prev] |
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218 | mov eax,[ebx+offs_ligh_next] |
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219 | mov [eax+offs_ligh_prev],ecx ;l.next.prev = l.prev |
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220 | .end_f: |
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221 | ret |
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222 | endp |
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223 | |||
224 | ; non optimized lightening model |
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225 | align 4 |
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226 | proc gl_shade_vertex, context:dword, v:dword |
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227 | |||
228 | ; float R,G,B,A; |
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229 | ; GLMaterial *m; |
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230 | ; GLLight *l; |
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231 | ; V3 n,s,d; |
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232 | ; float dist,tmp,att,dot,dot_spot,dot_spec; |
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233 | ; int twoside = c->light_model_two_side; |
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234 | |||
235 | ; m=&c->materials[0]; |
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236 | |||
237 | ; n.X=v->normal.X; |
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238 | ; n.Y=v->normal.Y; |
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239 | ; n.Z=v->normal.Z; |
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240 | |||
241 | ; R=m->emission.v[0]+m->ambient.v[0]*c->ambient_light_model.v[0]; |
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242 | ; G=m->emission.v[1]+m->ambient.v[1]*c->ambient_light_model.v[1]; |
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243 | ; B=m->emission.v[2]+m->ambient.v[2]*c->ambient_light_model.v[2]; |
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244 | ; A=clampf(m->diffuse.v[3],0,1); |
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245 | |||
246 | ; for(l=c->first_light;l!=NULL;l=l->next) { |
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247 | ; float lR,lB,lG; |
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248 | |||
249 | ; /* ambient */ |
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250 | ; lR=l->ambient.v[0] * m->ambient.v[0]; |
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251 | ; lG=l->ambient.v[1] * m->ambient.v[1]; |
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252 | ; lB=l->ambient.v[2] * m->ambient.v[2]; |
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253 | |||
254 | ; if (l->position.v[3] == 0) { |
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255 | ; /* light at infinity */ |
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256 | ; d.X=l->position.v[0]; |
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257 | ; d.Y=l->position.v[1]; |
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258 | ; d.Z=l->position.v[2]; |
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259 | ; att=1; |
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260 | ; } else { |
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261 | ; /* distance attenuation */ |
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262 | ; d.X=l->position.v[0]-v->ec.v[0]; |
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263 | ; d.Y=l->position.v[1]-v->ec.v[1]; |
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264 | ; d.Z=l->position.v[2]-v->ec.v[2]; |
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265 | ; dist=sqrt(d.X*d.X+d.Y*d.Y+d.Z*d.Z); |
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266 | ; if (dist>1E-3) { |
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267 | ; tmp=1/dist; |
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268 | ; d.X*=tmp; |
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269 | ; d.Y*=tmp; |
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270 | ; d.Z*=tmp; |
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271 | ; } |
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272 | ; att=1.0f/(l->attenuation[0]+dist*(l->attenuation[1]+ |
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273 | ; dist*l->attenuation[2])); |
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274 | ; } |
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275 | ; dot=d.X*n.X+d.Y*n.Y+d.Z*n.Z; |
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276 | ; if (twoside && dot < 0) dot = -dot; |
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277 | ; if (dot>0) { |
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278 | ; /* diffuse light */ |
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279 | ; lR+=dot * l->diffuse.v[0] * m->diffuse.v[0]; |
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280 | ; lG+=dot * l->diffuse.v[1] * m->diffuse.v[1]; |
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281 | ; lB+=dot * l->diffuse.v[2] * m->diffuse.v[2]; |
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282 | ; |
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283 | ; /* spot light */ |
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284 | ; if (l->spot_cutoff != 180) { |
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285 | ; dot_spot=-(d.X*l->norm_spot_direction.v[0]+ |
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286 | ; d.Y*l->norm_spot_direction.v[1]+ |
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287 | ; d.Z*l->norm_spot_direction.v[2]); |
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288 | ; if (twoside && dot_spot < 0) dot_spot = -dot_spot; |
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289 | ; if (dot_spot < l->cos_spot_cutoff) { |
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290 | ; /* no contribution */ |
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291 | ; continue; |
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292 | ; } else { |
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293 | ; /* TODO: optimize */ |
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294 | ; if (l->spot_exponent > 0) { |
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295 | ; att=att*pow(dot_spot,l->spot_exponent); |
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296 | ; } |
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297 | ; } |
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298 | ; } |
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299 | |||
300 | ; /* specular light */ |
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301 | |||
302 | ; if (c->local_light_model) { |
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303 | ; V3 vcoord; |
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304 | ; vcoord.X=v->ec.X; |
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305 | ; vcoord.Y=v->ec.Y; |
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306 | ; vcoord.Z=v->ec.Z; |
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307 | ; gl_V3_Norm(&vcoord); |
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308 | ; s.X=d.X-vcoord.X; |
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309 | ; s.Y=d.Y-vcoord.X; |
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310 | ; s.Z=d.Z-vcoord.X; |
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311 | ; } else { |
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312 | ; s.X=d.X; |
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313 | ; s.Y=d.Y; |
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314 | ; s.Z=d.Z+1.0; |
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315 | ; } |
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316 | ; dot_spec=n.X*s.X+n.Y*s.Y+n.Z*s.Z; |
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317 | ; if (twoside && dot_spec < 0) dot_spec = -dot_spec; |
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318 | ; if (dot_spec>0) { |
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319 | ; GLSpecBuf *specbuf; |
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320 | ; int idx; |
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321 | ; tmp=sqrt(s.X*s.X+s.Y*s.Y+s.Z*s.Z); |
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322 | ; if (tmp > 1E-3) { |
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323 | ; dot_spec=dot_spec / tmp; |
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324 | ; } |
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325 | |||
326 | ; /* TODO: optimize */ |
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327 | ; /* testing specular buffer code */ |
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328 | ; /* dot_spec= pow(dot_spec,m->shininess);*/ |
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329 | ; specbuf = specbuf_get_buffer(c, m->shininess_i, m->shininess); |
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330 | ; idx = (int)(dot_spec*SPECULAR_BUFFER_SIZE); |
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331 | ; if (idx > SPECULAR_BUFFER_SIZE) idx = SPECULAR_BUFFER_SIZE; |
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332 | ; dot_spec = specbuf->buf[idx]; |
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333 | ; lR+=dot_spec * l->specular.v[0] * m->specular.v[0]; |
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334 | ; lG+=dot_spec * l->specular.v[1] * m->specular.v[1]; |
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335 | ; lB+=dot_spec * l->specular.v[2] * m->specular.v[2]; |
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336 | ; } |
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337 | ; } |
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338 | |||
339 | ; R+=att * lR; |
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340 | ; G+=att * lG; |
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341 | ; B+=att * lB; |
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342 | ; } |
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343 | |||
344 | ; v->color.v[0]=clampf(R,0,1); |
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345 | ; v->color.v[1]=clampf(G,0,1); |
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346 | ; v->color.v[2]=clampf(B,0,1); |
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347 | ; v->color.v[3]=A; |
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348 | ret |
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349 | endp>>>>4;i++)>=90)); |
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350 |