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5564 | serge | 1 | /* |
2 | * Mesa 3-D graphics library |
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3 | * |
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4 | * Copyright (C) 1999-2008 Brian Paul All Rights Reserved. |
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5 | * Copyright (C) 2009 VMware, Inc. All Rights Reserved. |
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6 | * |
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7 | * Permission is hereby granted, free of charge, to any person obtaining a |
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8 | * copy of this software and associated documentation files (the "Software"), |
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9 | * to deal in the Software without restriction, including without limitation |
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10 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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11 | * and/or sell copies of the Software, and to permit persons to whom the |
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12 | * Software is furnished to do so, subject to the following conditions: |
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13 | * |
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14 | * The above copyright notice and this permission notice shall be included |
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15 | * in all copies or substantial portions of the Software. |
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16 | * |
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17 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
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18 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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19 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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20 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR |
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21 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
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22 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
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23 | * OTHER DEALINGS IN THE SOFTWARE. |
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24 | */ |
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25 | |||
26 | /** |
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27 | * \file texgen.c |
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28 | * |
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29 | * glTexGen-related functions |
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30 | */ |
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31 | |||
32 | |||
33 | #include "main/glheader.h" |
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34 | #include "main/context.h" |
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35 | #include "main/enums.h" |
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36 | #include "main/macros.h" |
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37 | #include "main/texgen.h" |
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38 | #include "main/texstate.h" |
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39 | #include "math/m_matrix.h" |
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40 | #include "main/dispatch.h" |
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41 | |||
42 | |||
43 | /** |
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44 | * Return texgen state for given coordinate |
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45 | */ |
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46 | static struct gl_texgen * |
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47 | get_texgen(struct gl_context *ctx, struct gl_texture_unit *texUnit, |
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48 | GLenum coord) |
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49 | { |
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50 | if (ctx->API == API_OPENGLES) { |
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51 | return (coord == GL_TEXTURE_GEN_STR_OES) |
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52 | ? &texUnit->GenS : NULL; |
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53 | } |
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54 | |||
55 | switch (coord) { |
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56 | case GL_S: |
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57 | return &texUnit->GenS; |
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58 | case GL_T: |
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59 | return &texUnit->GenT; |
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60 | case GL_R: |
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61 | return &texUnit->GenR; |
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62 | case GL_Q: |
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63 | return &texUnit->GenQ; |
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64 | default: |
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65 | return NULL; |
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66 | } |
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67 | } |
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68 | |||
69 | |||
70 | void GLAPIENTRY |
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71 | _mesa_TexGenfv( GLenum coord, GLenum pname, const GLfloat *params ) |
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72 | { |
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73 | struct gl_texture_unit *texUnit; |
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74 | struct gl_texgen *texgen; |
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75 | GET_CURRENT_CONTEXT(ctx); |
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76 | |||
77 | if (MESA_VERBOSE&(VERBOSE_API|VERBOSE_TEXTURE)) |
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78 | _mesa_debug(ctx, "glTexGen %s %s %.1f(%s)...\n", |
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79 | _mesa_lookup_enum_by_nr(coord), |
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80 | _mesa_lookup_enum_by_nr(pname), |
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81 | *params, |
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82 | _mesa_lookup_enum_by_nr((GLenum) (GLint) *params)); |
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83 | |||
84 | if (ctx->Texture.CurrentUnit >= ctx->Const.MaxTextureCoordUnits) { |
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85 | _mesa_error(ctx, GL_INVALID_OPERATION, "glTexGen(current unit)"); |
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86 | return; |
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87 | } |
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88 | |||
89 | texUnit = _mesa_get_current_tex_unit(ctx); |
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90 | |||
91 | texgen = get_texgen(ctx, texUnit, coord); |
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92 | if (!texgen) { |
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93 | _mesa_error(ctx, GL_INVALID_ENUM, "glTexGen(coord)"); |
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94 | return; |
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95 | } |
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96 | |||
97 | switch (pname) { |
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98 | case GL_TEXTURE_GEN_MODE: |
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99 | { |
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100 | GLenum mode = (GLenum) (GLint) params[0]; |
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101 | GLbitfield bit = 0x0; |
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102 | if (texgen->Mode == mode) |
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103 | return; |
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104 | switch (mode) { |
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105 | case GL_OBJECT_LINEAR: |
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106 | bit = TEXGEN_OBJ_LINEAR; |
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107 | break; |
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108 | case GL_EYE_LINEAR: |
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109 | bit = TEXGEN_EYE_LINEAR; |
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110 | break; |
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111 | case GL_SPHERE_MAP: |
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112 | if (coord == GL_S || coord == GL_T) |
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113 | bit = TEXGEN_SPHERE_MAP; |
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114 | break; |
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115 | case GL_REFLECTION_MAP_NV: |
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116 | if (coord != GL_Q) |
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117 | bit = TEXGEN_REFLECTION_MAP_NV; |
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118 | break; |
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119 | case GL_NORMAL_MAP_NV: |
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120 | if (coord != GL_Q) |
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121 | bit = TEXGEN_NORMAL_MAP_NV; |
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122 | break; |
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123 | default: |
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124 | ; /* nop */ |
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125 | } |
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126 | if (!bit) { |
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127 | _mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(param)" ); |
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128 | return; |
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129 | } |
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130 | if (ctx->API != API_OPENGL_COMPAT |
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131 | && (bit & (TEXGEN_REFLECTION_MAP_NV | TEXGEN_NORMAL_MAP_NV)) == 0) { |
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132 | _mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(param)" ); |
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133 | return; |
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134 | } |
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135 | |||
136 | FLUSH_VERTICES(ctx, _NEW_TEXTURE); |
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137 | texgen->Mode = mode; |
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138 | texgen->_ModeBit = bit; |
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139 | } |
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140 | break; |
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141 | |||
142 | case GL_OBJECT_PLANE: |
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143 | { |
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144 | if (ctx->API != API_OPENGL_COMPAT) { |
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145 | _mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(param)" ); |
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146 | return; |
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147 | } |
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148 | if (TEST_EQ_4V(texgen->ObjectPlane, params)) |
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149 | return; |
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150 | FLUSH_VERTICES(ctx, _NEW_TEXTURE); |
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151 | COPY_4FV(texgen->ObjectPlane, params); |
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152 | } |
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153 | break; |
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154 | |||
155 | case GL_EYE_PLANE: |
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156 | { |
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157 | GLfloat tmp[4]; |
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158 | |||
159 | if (ctx->API != API_OPENGL_COMPAT) { |
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160 | _mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(param)" ); |
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161 | return; |
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162 | } |
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163 | |||
164 | /* Transform plane equation by the inverse modelview matrix */ |
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165 | if (_math_matrix_is_dirty(ctx->ModelviewMatrixStack.Top)) { |
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166 | _math_matrix_analyse(ctx->ModelviewMatrixStack.Top); |
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167 | } |
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168 | _mesa_transform_vector(tmp, params, |
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169 | ctx->ModelviewMatrixStack.Top->inv); |
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170 | if (TEST_EQ_4V(texgen->EyePlane, tmp)) |
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171 | return; |
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172 | FLUSH_VERTICES(ctx, _NEW_TEXTURE); |
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173 | COPY_4FV(texgen->EyePlane, tmp); |
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174 | } |
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175 | break; |
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176 | |||
177 | default: |
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178 | _mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(pname)" ); |
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179 | return; |
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180 | } |
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181 | |||
182 | if (ctx->Driver.TexGen) |
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183 | ctx->Driver.TexGen( ctx, coord, pname, params ); |
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184 | } |
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185 | |||
186 | |||
187 | void GLAPIENTRY |
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188 | _mesa_TexGeniv(GLenum coord, GLenum pname, const GLint *params ) |
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189 | { |
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190 | GLfloat p[4]; |
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191 | p[0] = (GLfloat) params[0]; |
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192 | if (pname == GL_TEXTURE_GEN_MODE) { |
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193 | p[1] = p[2] = p[3] = 0.0F; |
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194 | } |
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195 | else { |
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196 | p[1] = (GLfloat) params[1]; |
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197 | p[2] = (GLfloat) params[2]; |
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198 | p[3] = (GLfloat) params[3]; |
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199 | } |
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200 | _mesa_TexGenfv(coord, pname, p); |
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201 | } |
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202 | |||
203 | |||
204 | void GLAPIENTRY |
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205 | _mesa_TexGend(GLenum coord, GLenum pname, GLdouble param ) |
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206 | { |
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207 | GLfloat p[4]; |
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208 | p[0] = (GLfloat) param; |
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209 | p[1] = p[2] = p[3] = 0.0F; |
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210 | _mesa_TexGenfv( coord, pname, p ); |
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211 | } |
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212 | |||
213 | |||
214 | void GLAPIENTRY |
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215 | _es_GetTexGenfv(GLenum coord, GLenum pname, GLfloat *params) |
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216 | { |
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217 | _mesa_GetTexGenfv(GL_S, pname, params); |
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218 | } |
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219 | |||
220 | |||
221 | void GLAPIENTRY |
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222 | _es_TexGenf(GLenum coord, GLenum pname, GLfloat param) |
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223 | { |
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224 | if (coord != GL_TEXTURE_GEN_STR_OES) { |
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225 | GET_CURRENT_CONTEXT(ctx); |
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226 | _mesa_error( ctx, GL_INVALID_ENUM, "glTexGen[fx](pname)" ); |
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227 | return; |
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228 | } |
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229 | /* set S, T, and R at the same time */ |
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230 | _mesa_TexGenf(GL_S, pname, param); |
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231 | _mesa_TexGenf(GL_T, pname, param); |
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232 | _mesa_TexGenf(GL_R, pname, param); |
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233 | } |
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234 | |||
235 | |||
236 | void GLAPIENTRY |
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237 | _es_TexGenfv(GLenum coord, GLenum pname, const GLfloat *params) |
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238 | { |
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239 | if (coord != GL_TEXTURE_GEN_STR_OES) { |
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240 | GET_CURRENT_CONTEXT(ctx); |
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241 | _mesa_error( ctx, GL_INVALID_ENUM, "glTexGen[fx]v(pname)" ); |
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242 | return; |
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243 | } |
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244 | /* set S, T, and R at the same time */ |
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245 | _mesa_TexGenfv(GL_S, pname, params); |
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246 | _mesa_TexGenfv(GL_T, pname, params); |
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247 | _mesa_TexGenfv(GL_R, pname, params); |
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248 | } |
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249 | |||
250 | |||
251 | void GLAPIENTRY |
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252 | _mesa_TexGendv(GLenum coord, GLenum pname, const GLdouble *params ) |
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253 | { |
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254 | GLfloat p[4]; |
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255 | p[0] = (GLfloat) params[0]; |
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256 | if (pname == GL_TEXTURE_GEN_MODE) { |
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257 | p[1] = p[2] = p[3] = 0.0F; |
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258 | } |
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259 | else { |
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260 | p[1] = (GLfloat) params[1]; |
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261 | p[2] = (GLfloat) params[2]; |
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262 | p[3] = (GLfloat) params[3]; |
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263 | } |
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264 | _mesa_TexGenfv( coord, pname, p ); |
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265 | } |
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266 | |||
267 | |||
268 | void GLAPIENTRY |
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269 | _mesa_TexGenf( GLenum coord, GLenum pname, GLfloat param ) |
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270 | { |
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271 | GLfloat p[4]; |
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272 | p[0] = param; |
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273 | p[1] = p[2] = p[3] = 0.0F; |
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274 | _mesa_TexGenfv(coord, pname, p); |
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275 | } |
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276 | |||
277 | |||
278 | void GLAPIENTRY |
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279 | _mesa_TexGeni( GLenum coord, GLenum pname, GLint param ) |
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280 | { |
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281 | GLint p[4]; |
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282 | p[0] = param; |
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283 | p[1] = p[2] = p[3] = 0; |
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284 | _mesa_TexGeniv( coord, pname, p ); |
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285 | } |
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286 | |||
287 | |||
288 | |||
289 | void GLAPIENTRY |
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290 | _mesa_GetTexGendv( GLenum coord, GLenum pname, GLdouble *params ) |
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291 | { |
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292 | struct gl_texture_unit *texUnit; |
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293 | struct gl_texgen *texgen; |
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294 | GET_CURRENT_CONTEXT(ctx); |
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295 | |||
296 | if (ctx->Texture.CurrentUnit >= ctx->Const.MaxTextureCoordUnits) { |
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297 | _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexGendv(current unit)"); |
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298 | return; |
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299 | } |
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300 | |||
301 | texUnit = _mesa_get_current_tex_unit(ctx); |
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302 | |||
303 | texgen = get_texgen(ctx, texUnit, coord); |
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304 | if (!texgen) { |
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305 | _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexGendv(coord)"); |
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306 | return; |
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307 | } |
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308 | |||
309 | switch (pname) { |
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310 | case GL_TEXTURE_GEN_MODE: |
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311 | params[0] = ENUM_TO_DOUBLE(texgen->Mode); |
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312 | break; |
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313 | case GL_OBJECT_PLANE: |
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314 | COPY_4V(params, texgen->ObjectPlane); |
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315 | break; |
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316 | case GL_EYE_PLANE: |
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317 | COPY_4V(params, texgen->EyePlane); |
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318 | break; |
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319 | default: |
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320 | _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGendv(pname)" ); |
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321 | } |
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322 | } |
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323 | |||
324 | |||
325 | |||
326 | void GLAPIENTRY |
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327 | _mesa_GetTexGenfv( GLenum coord, GLenum pname, GLfloat *params ) |
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328 | { |
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329 | struct gl_texture_unit *texUnit; |
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330 | struct gl_texgen *texgen; |
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331 | GET_CURRENT_CONTEXT(ctx); |
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332 | |||
333 | if (ctx->Texture.CurrentUnit >= ctx->Const.MaxTextureCoordUnits) { |
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334 | _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexGenfv(current unit)"); |
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335 | return; |
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336 | } |
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337 | |||
338 | texUnit = _mesa_get_current_tex_unit(ctx); |
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339 | |||
340 | texgen = get_texgen(ctx, texUnit, coord); |
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341 | if (!texgen) { |
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342 | _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexGenfv(coord)"); |
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343 | return; |
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344 | } |
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345 | |||
346 | switch (pname) { |
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347 | case GL_TEXTURE_GEN_MODE: |
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348 | params[0] = ENUM_TO_FLOAT(texgen->Mode); |
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349 | break; |
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350 | case GL_OBJECT_PLANE: |
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351 | if (ctx->API != API_OPENGL_COMPAT) { |
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352 | _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGenfv(param)" ); |
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353 | return; |
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354 | } |
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355 | COPY_4V(params, texgen->ObjectPlane); |
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356 | break; |
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357 | case GL_EYE_PLANE: |
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358 | if (ctx->API != API_OPENGL_COMPAT) { |
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359 | _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGenfv(param)" ); |
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360 | return; |
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361 | } |
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362 | COPY_4V(params, texgen->EyePlane); |
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363 | break; |
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364 | default: |
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365 | _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGenfv(pname)" ); |
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366 | } |
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367 | } |
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368 | |||
369 | |||
370 | |||
371 | void GLAPIENTRY |
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372 | _mesa_GetTexGeniv( GLenum coord, GLenum pname, GLint *params ) |
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373 | { |
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374 | struct gl_texture_unit *texUnit; |
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375 | struct gl_texgen *texgen; |
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376 | GET_CURRENT_CONTEXT(ctx); |
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377 | |||
378 | if (ctx->Texture.CurrentUnit >= ctx->Const.MaxTextureCoordUnits) { |
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379 | _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexGeniv(current unit)"); |
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380 | return; |
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381 | } |
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382 | |||
383 | texUnit = _mesa_get_current_tex_unit(ctx); |
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384 | |||
385 | texgen = get_texgen(ctx, texUnit, coord); |
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386 | if (!texgen) { |
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387 | _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexGeniv(coord)"); |
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388 | return; |
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389 | } |
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390 | |||
391 | switch (pname) { |
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392 | case GL_TEXTURE_GEN_MODE: |
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393 | params[0] = texgen->Mode; |
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394 | break; |
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395 | case GL_OBJECT_PLANE: |
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396 | if (ctx->API != API_OPENGL_COMPAT) { |
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397 | _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGeniv(param)" ); |
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398 | return; |
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399 | } |
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400 | params[0] = (GLint) texgen->ObjectPlane[0]; |
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401 | params[1] = (GLint) texgen->ObjectPlane[1]; |
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402 | params[2] = (GLint) texgen->ObjectPlane[2]; |
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403 | params[3] = (GLint) texgen->ObjectPlane[3]; |
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404 | break; |
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405 | case GL_EYE_PLANE: |
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406 | if (ctx->API != API_OPENGL_COMPAT) { |
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407 | _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGeniv(param)" ); |
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408 | return; |
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409 | } |
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410 | params[0] = (GLint) texgen->EyePlane[0]; |
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411 | params[1] = (GLint) texgen->EyePlane[1]; |
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412 | params[2] = (GLint) texgen->EyePlane[2]; |
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413 | params[3] = (GLint) texgen->EyePlane[3]; |
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414 | break; |
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415 | default: |
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416 | _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGeniv(pname)" ); |
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417 | } |
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418 | } |