1 /* 2 * Mesa 3-D graphics library 3 * Version: 7.1 4 * 5 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved. 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining a 8 * copy of this software and associated documentation files (the "Software"), 9 * to deal in the Software without restriction, including without limitation 10 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 11 * and/or sell copies of the Software, and to permit persons to whom the 12 * Software is furnished to do so, subject to the following conditions: 13 * 14 * The above copyright notice and this permission notice shall be included 15 * in all copies or substantial portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 20 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN 21 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 23 */ 24 25 26 27 #include "glheader.h" 28 #include "context.h" 29 #include "get.h" 30 #include "enums.h" 31 #include "extensions.h" 32 #include "mfeatures.h" 33 #include "mtypes.h" 34 35 36 /** 37 * Return the string for a glGetString(GL_SHADING_LANGUAGE_VERSION) query. 38 */ 39 static const GLubyte * 40 shading_language_version(struct gl_context *ctx) 41 { 42 switch (ctx->API) { 43 case API_OPENGL: 44 case API_OPENGL_CORE: 45 if (!ctx->Extensions.ARB_shader_objects) { 46 _mesa_error(ctx, GL_INVALID_ENUM, "glGetString"); 47 return (const GLubyte *) 0; 48 } 49 50 switch (ctx->Const.GLSLVersion) { 51 case 110: 52 return (const GLubyte *) "1.10"; 53 case 120: 54 return (const GLubyte *) "1.20"; 55 case 130: 56 return (const GLubyte *) "1.30"; 57 case 140: 58 return (const GLubyte *) "1.40"; 59 case 150: 60 return (const GLubyte *) "1.50"; 61 case 330: 62 return (const GLubyte *) "3.30"; 63 case 400: 64 return (const GLubyte *) "4.00"; 65 case 410: 66 return (const GLubyte *) "4.10"; 67 case 420: 68 return (const GLubyte *) "4.20"; 69 default: 70 _mesa_problem(ctx, 71 "Invalid GLSL version in shading_language_version()"); 72 return (const GLubyte *) 0; 73 } 74 break; 75 76 case API_OPENGLES2: 77 return (const GLubyte *) "OpenGL ES GLSL ES 1.0.16"; 78 79 case API_OPENGLES: 80 /* fall-through */ 81 82 default: 83 _mesa_problem(ctx, "Unexpected API value in shading_language_version()"); 84 return (const GLubyte *) 0; 85 } 86 } 87 88 89 /** 90 * Query string-valued state. The return value should _not_ be freed by 91 * the caller. 92 * 93 * \param name the state variable to query. 94 * 95 * \sa glGetString(). 96 * 97 * Tries to get the string from dd_function_table::GetString, otherwise returns 98 * the hardcoded strings. 99 */ 100 const GLubyte * GLAPIENTRY 101 _mesa_GetString( GLenum name ) 102 { 103 GET_CURRENT_CONTEXT(ctx); 104 static const char *vendor = "Brian Paul"; 105 static const char *renderer = "Mesa"; 106 107 if (!ctx) 108 return NULL; 109 110 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, NULL); 111 112 /* this is a required driver function */ 113 assert(ctx->Driver.GetString); 114 { 115 /* Give the driver the chance to handle this query */ 116 const GLubyte *str = (*ctx->Driver.GetString)(ctx, name); 117 if (str) 118 return str; 119 } 120 121 switch (name) { 122 case GL_VENDOR: 123 return (const GLubyte *) vendor; 124 case GL_RENDERER: 125 return (const GLubyte *) renderer; 126 case GL_VERSION: 127 return (const GLubyte *) ctx->VersionString; 128 case GL_EXTENSIONS: 129 if (ctx->API == API_OPENGL_CORE) { 130 _mesa_error(ctx, GL_INVALID_ENUM, "glGetString(GL_EXTENSIONS)"); 131 return (const GLubyte *) 0; 132 } 133 return (const GLubyte *) ctx->Extensions.String; 134 #if FEATURE_ARB_shading_language_100 || FEATURE_ES2 135 case GL_SHADING_LANGUAGE_VERSION: 136 if (ctx->API == API_OPENGLES) 137 break; 138 return shading_language_version(ctx); 139 #endif 140 #if FEATURE_NV_fragment_program || FEATURE_ARB_fragment_program || \ 141 FEATURE_NV_vertex_program || FEATURE_ARB_vertex_program 142 case GL_PROGRAM_ERROR_STRING_NV: 143 if (ctx->API == API_OPENGL && 144 (ctx->Extensions.NV_fragment_program || 145 ctx->Extensions.ARB_fragment_program || 146 ctx->Extensions.NV_vertex_program || 147 ctx->Extensions.ARB_vertex_program)) { 148 return (const GLubyte *) ctx->Program.ErrorString; 149 } 150 break; 151 #endif 152 default: 153 break; 154 } 155 156 _mesa_error( ctx, GL_INVALID_ENUM, "glGetString" ); 157 return (const GLubyte *) 0; 158 } 159 160 161 /** 162 * GL3 163 */ 164 const GLubyte * GLAPIENTRY 165 _mesa_GetStringi(GLenum name, GLuint index) 166 { 167 GET_CURRENT_CONTEXT(ctx); 168 169 if (!ctx) 170 return NULL; 171 172 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, NULL); 173 174 switch (name) { 175 case GL_EXTENSIONS: 176 if (index >= _mesa_get_extension_count(ctx)) { 177 _mesa_error(ctx, GL_INVALID_VALUE, "glGetStringi(index=%u)", index); 178 return (const GLubyte *) 0; 179 } 180 return _mesa_get_enabled_extension(ctx, index); 181 default: 182 _mesa_error( ctx, GL_INVALID_ENUM, "glGetString" ); 183 return (const GLubyte *) 0; 184 } 185 } 186 187 188 189 /** 190 * Return pointer-valued state, such as a vertex array pointer. 191 * 192 * \param pname names state to be queried 193 * \param params returns the pointer value 194 * 195 * \sa glGetPointerv(). 196 * 197 * Tries to get the specified pointer via dd_function_table::GetPointerv, 198 * otherwise gets the specified pointer from the current context. 199 */ 200 void GLAPIENTRY 201 _mesa_GetPointerv( GLenum pname, GLvoid **params ) 202 { 203 GET_CURRENT_CONTEXT(ctx); 204 const GLuint clientUnit = ctx->Array.ActiveTexture; 205 ASSERT_OUTSIDE_BEGIN_END(ctx); 206 207 if (!params) 208 return; 209 210 if (MESA_VERBOSE & VERBOSE_API) 211 _mesa_debug(ctx, "glGetPointerv %s\n", _mesa_lookup_enum_by_nr(pname)); 212 213 switch (pname) { 214 case GL_VERTEX_ARRAY_POINTER: 215 if (ctx->API != API_OPENGL && ctx->API != API_OPENGLES) 216 goto invalid_pname; 217 *params = (GLvoid *) ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_POS].Ptr; 218 break; 219 case GL_NORMAL_ARRAY_POINTER: 220 if (ctx->API != API_OPENGL && ctx->API != API_OPENGLES) 221 goto invalid_pname; 222 *params = (GLvoid *) ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_NORMAL].Ptr; 223 break; 224 case GL_COLOR_ARRAY_POINTER: 225 if (ctx->API != API_OPENGL && ctx->API != API_OPENGLES) 226 goto invalid_pname; 227 *params = (GLvoid *) ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_COLOR0].Ptr; 228 break; 229 case GL_SECONDARY_COLOR_ARRAY_POINTER_EXT: 230 if (ctx->API != API_OPENGL) 231 goto invalid_pname; 232 *params = (GLvoid *) ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_COLOR1].Ptr; 233 break; 234 case GL_FOG_COORDINATE_ARRAY_POINTER_EXT: 235 if (ctx->API != API_OPENGL) 236 goto invalid_pname; 237 *params = (GLvoid *) ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_FOG].Ptr; 238 break; 239 case GL_INDEX_ARRAY_POINTER: 240 if (ctx->API != API_OPENGL) 241 goto invalid_pname; 242 *params = (GLvoid *) ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_COLOR_INDEX].Ptr; 243 break; 244 case GL_TEXTURE_COORD_ARRAY_POINTER: 245 if (ctx->API != API_OPENGL && ctx->API != API_OPENGLES) 246 goto invalid_pname; 247 *params = (GLvoid *) ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_TEX(clientUnit)].Ptr; 248 break; 249 case GL_EDGE_FLAG_ARRAY_POINTER: 250 if (ctx->API != API_OPENGL) 251 goto invalid_pname; 252 *params = (GLvoid *) ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_EDGEFLAG].Ptr; 253 break; 254 case GL_FEEDBACK_BUFFER_POINTER: 255 if (ctx->API != API_OPENGL) 256 goto invalid_pname; 257 *params = ctx->Feedback.Buffer; 258 break; 259 case GL_SELECTION_BUFFER_POINTER: 260 if (ctx->API != API_OPENGL) 261 goto invalid_pname; 262 *params = ctx->Select.Buffer; 263 break; 264 #if FEATURE_point_size_array 265 case GL_POINT_SIZE_ARRAY_POINTER_OES: 266 if (ctx->API != API_OPENGLES) 267 goto invalid_pname; 268 *params = (GLvoid *) ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_POINT_SIZE].Ptr; 269 break; 270 #endif 271 case GL_DEBUG_CALLBACK_FUNCTION_ARB: 272 if (!_mesa_is_desktop_gl(ctx)) 273 goto invalid_pname; 274 *params = (GLvoid *) ctx->Debug.Callback; 275 break; 276 case GL_DEBUG_CALLBACK_USER_PARAM_ARB: 277 if (!_mesa_is_desktop_gl(ctx)) 278 goto invalid_pname; 279 *params = ctx->Debug.CallbackData; 280 break; 281 default: 282 goto invalid_pname; 283 } 284 285 return; 286 287 invalid_pname: 288 _mesa_error( ctx, GL_INVALID_ENUM, "glGetPointerv" ); 289 return; 290 } 291 292 293 /** 294 * Returns the current GL error code, or GL_NO_ERROR. 295 * \return current error code 296 * 297 * Returns __struct gl_contextRec::ErrorValue. 298 */ 299 GLenum GLAPIENTRY 300 _mesa_GetError( void ) 301 { 302 GET_CURRENT_CONTEXT(ctx); 303 GLenum e = ctx->ErrorValue; 304 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, 0); 305 306 if (MESA_VERBOSE & VERBOSE_API) 307 _mesa_debug(ctx, "glGetError <-- %s\n", _mesa_lookup_enum_by_nr(e)); 308 309 ctx->ErrorValue = (GLenum) GL_NO_ERROR; 310 ctx->ErrorDebugCount = 0; 311 return e; 312 } 313 314 /** 315 * Returns an error code specified by GL_ARB_robustness, or GL_NO_ERROR. 316 * \return current context status 317 */ 318 GLenum GLAPIENTRY 319 _mesa_GetGraphicsResetStatusARB( void ) 320 { 321 GET_CURRENT_CONTEXT(ctx); 322 GLenum status = ctx->ResetStatus; 323 324 if (MESA_VERBOSE & VERBOSE_API) 325 _mesa_debug(ctx, "glGetGraphicsResetStatusARB" 326 "(always returns GL_NO_ERROR)\n"); 327 328 return status; 329 } 330
