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 *
shading_language_version(struct gl_context * ctx)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
_mesa_GetString(GLenum name)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
_mesa_GetStringi(GLenum name,GLuint index)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
_mesa_GetPointerv(GLenum pname,GLvoid ** params)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
_mesa_GetError(void)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
_mesa_GetGraphicsResetStatusARB(void)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