mesa: Use a single flag for the S3TC extensions that don't require on-line compression
[mesa.git] / src / mesa / main / getstring.c
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_COMPAT:
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 case GL_SHADING_LANGUAGE_VERSION:
135 if (ctx->API == API_OPENGLES)
136 break;
137 return shading_language_version(ctx);
138 case GL_PROGRAM_ERROR_STRING_NV:
139 if (ctx->API == API_OPENGL_COMPAT &&
140 (ctx->Extensions.ARB_fragment_program ||
141 ctx->Extensions.ARB_vertex_program)) {
142 return (const GLubyte *) ctx->Program.ErrorString;
143 }
144 break;
145 default:
146 break;
147 }
148
149 _mesa_error( ctx, GL_INVALID_ENUM, "glGetString" );
150 return (const GLubyte *) 0;
151 }
152
153
154 /**
155 * GL3
156 */
157 const GLubyte * GLAPIENTRY
158 _mesa_GetStringi(GLenum name, GLuint index)
159 {
160 GET_CURRENT_CONTEXT(ctx);
161
162 if (!ctx)
163 return NULL;
164
165 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, NULL);
166
167 switch (name) {
168 case GL_EXTENSIONS:
169 if (index >= _mesa_get_extension_count(ctx)) {
170 _mesa_error(ctx, GL_INVALID_VALUE, "glGetStringi(index=%u)", index);
171 return (const GLubyte *) 0;
172 }
173 return _mesa_get_enabled_extension(ctx, index);
174 default:
175 _mesa_error( ctx, GL_INVALID_ENUM, "glGetString" );
176 return (const GLubyte *) 0;
177 }
178 }
179
180
181
182 /**
183 * Return pointer-valued state, such as a vertex array pointer.
184 *
185 * \param pname names state to be queried
186 * \param params returns the pointer value
187 *
188 * \sa glGetPointerv().
189 *
190 * Tries to get the specified pointer via dd_function_table::GetPointerv,
191 * otherwise gets the specified pointer from the current context.
192 */
193 void GLAPIENTRY
194 _mesa_GetPointerv( GLenum pname, GLvoid **params )
195 {
196 GET_CURRENT_CONTEXT(ctx);
197 const GLuint clientUnit = ctx->Array.ActiveTexture;
198
199 if (!params)
200 return;
201
202 if (MESA_VERBOSE & VERBOSE_API)
203 _mesa_debug(ctx, "glGetPointerv %s\n", _mesa_lookup_enum_by_nr(pname));
204
205 switch (pname) {
206 case GL_VERTEX_ARRAY_POINTER:
207 if (ctx->API != API_OPENGL_COMPAT && ctx->API != API_OPENGLES)
208 goto invalid_pname;
209 *params = (GLvoid *) ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_POS].Ptr;
210 break;
211 case GL_NORMAL_ARRAY_POINTER:
212 if (ctx->API != API_OPENGL_COMPAT && ctx->API != API_OPENGLES)
213 goto invalid_pname;
214 *params = (GLvoid *) ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_NORMAL].Ptr;
215 break;
216 case GL_COLOR_ARRAY_POINTER:
217 if (ctx->API != API_OPENGL_COMPAT && ctx->API != API_OPENGLES)
218 goto invalid_pname;
219 *params = (GLvoid *) ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_COLOR0].Ptr;
220 break;
221 case GL_SECONDARY_COLOR_ARRAY_POINTER_EXT:
222 if (ctx->API != API_OPENGL_COMPAT)
223 goto invalid_pname;
224 *params = (GLvoid *) ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_COLOR1].Ptr;
225 break;
226 case GL_FOG_COORDINATE_ARRAY_POINTER_EXT:
227 if (ctx->API != API_OPENGL_COMPAT)
228 goto invalid_pname;
229 *params = (GLvoid *) ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_FOG].Ptr;
230 break;
231 case GL_INDEX_ARRAY_POINTER:
232 if (ctx->API != API_OPENGL_COMPAT)
233 goto invalid_pname;
234 *params = (GLvoid *) ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_COLOR_INDEX].Ptr;
235 break;
236 case GL_TEXTURE_COORD_ARRAY_POINTER:
237 if (ctx->API != API_OPENGL_COMPAT && ctx->API != API_OPENGLES)
238 goto invalid_pname;
239 *params = (GLvoid *) ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_TEX(clientUnit)].Ptr;
240 break;
241 case GL_EDGE_FLAG_ARRAY_POINTER:
242 if (ctx->API != API_OPENGL_COMPAT)
243 goto invalid_pname;
244 *params = (GLvoid *) ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_EDGEFLAG].Ptr;
245 break;
246 case GL_FEEDBACK_BUFFER_POINTER:
247 if (ctx->API != API_OPENGL_COMPAT)
248 goto invalid_pname;
249 *params = ctx->Feedback.Buffer;
250 break;
251 case GL_SELECTION_BUFFER_POINTER:
252 if (ctx->API != API_OPENGL_COMPAT)
253 goto invalid_pname;
254 *params = ctx->Select.Buffer;
255 break;
256 case GL_POINT_SIZE_ARRAY_POINTER_OES:
257 if (ctx->API != API_OPENGLES)
258 goto invalid_pname;
259 *params = (GLvoid *) ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_POINT_SIZE].Ptr;
260 break;
261 case GL_DEBUG_CALLBACK_FUNCTION_ARB:
262 if (!_mesa_is_desktop_gl(ctx))
263 goto invalid_pname;
264 *params = (GLvoid *) ctx->Debug.Callback;
265 break;
266 case GL_DEBUG_CALLBACK_USER_PARAM_ARB:
267 if (!_mesa_is_desktop_gl(ctx))
268 goto invalid_pname;
269 *params = ctx->Debug.CallbackData;
270 break;
271 default:
272 goto invalid_pname;
273 }
274
275 return;
276
277 invalid_pname:
278 _mesa_error( ctx, GL_INVALID_ENUM, "glGetPointerv" );
279 return;
280 }
281
282
283 /**
284 * Returns the current GL error code, or GL_NO_ERROR.
285 * \return current error code
286 *
287 * Returns __struct gl_contextRec::ErrorValue.
288 */
289 GLenum GLAPIENTRY
290 _mesa_GetError( void )
291 {
292 GET_CURRENT_CONTEXT(ctx);
293 GLenum e = ctx->ErrorValue;
294 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, 0);
295
296 if (MESA_VERBOSE & VERBOSE_API)
297 _mesa_debug(ctx, "glGetError <-- %s\n", _mesa_lookup_enum_by_nr(e));
298
299 ctx->ErrorValue = (GLenum) GL_NO_ERROR;
300 ctx->ErrorDebugCount = 0;
301 return e;
302 }
303
304 /**
305 * Returns an error code specified by GL_ARB_robustness, or GL_NO_ERROR.
306 * \return current context status
307 */
308 GLenum GLAPIENTRY
309 _mesa_GetGraphicsResetStatusARB( void )
310 {
311 GET_CURRENT_CONTEXT(ctx);
312 GLenum status = ctx->ResetStatus;
313
314 if (MESA_VERBOSE & VERBOSE_API)
315 _mesa_debug(ctx, "glGetGraphicsResetStatusARB"
316 "(always returns GL_NO_ERROR)\n");
317
318 return status;
319 }