1 /*
2 * Mesa 3-D graphics library
3 *
4 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included
14 * in all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 */
24
25
26 #include <stdbool.h>
27 #include "glheader.h"
28 #include "context.h"
29 #include "debug_output.h"
30 #include "get.h"
31 #include "enums.h"
32 #include "extensions.h"
33 #include "mtypes.h"
34 #include "macros.h"
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_COMPAT:
44 case API_OPENGL_CORE:
45 switch (ctx->Const.GLSLVersion) {
46 case 120:
47 return (const GLubyte *) "1.20";
48 case 130:
49 return (const GLubyte *) "1.30";
50 case 140:
51 return (const GLubyte *) "1.40";
52 case 150:
53 return (const GLubyte *) "1.50";
54 case 330:
55 return (const GLubyte *) "3.30";
56 case 400:
57 return (const GLubyte *) "4.00";
58 case 410:
59 return (const GLubyte *) "4.10";
60 case 420:
61 return (const GLubyte *) "4.20";
62 case 430:
63 return (const GLubyte *) "4.30";
64 case 440:
65 return (const GLubyte *) "4.40";
66 case 450:
67 return (const GLubyte *) "4.50";
68 default:
69 _mesa_problem(ctx,
70 "Invalid GLSL version in shading_language_version()");
71 return (const GLubyte *) 0;
72 }
73 break;
74
75 case API_OPENGLES2:
76 switch (ctx->Version) {
77 case 20:
78 return (const GLubyte *) "OpenGL ES GLSL ES 1.0.16";
79 case 30:
80 return (const GLubyte *) "OpenGL ES GLSL ES 3.00";
81 case 31:
82 return (const GLubyte *) "OpenGL ES GLSL ES 3.10";
83 case 32:
84 return (const GLubyte *) "OpenGL ES GLSL ES 3.20";
85 default:
86 _mesa_problem(ctx,
87 "Invalid OpenGL ES version in shading_language_version()");
88 return (const GLubyte *) 0;
89 }
90 case API_OPENGLES:
91 /* fall-through */
92
93 default:
94 _mesa_problem(ctx, "Unexpected API value in shading_language_version()");
95 return (const GLubyte *) 0;
96 }
97 }
98
99
100 /**
101 * Query string-valued state. The return value should _not_ be freed by
102 * the caller.
103 *
104 * \param name the state variable to query.
105 *
106 * \sa glGetString().
107 *
108 * Tries to get the string from dd_function_table::GetString, otherwise returns
109 * the hardcoded strings.
110 */
111 const GLubyte * GLAPIENTRY
_mesa_GetString(GLenum name)112 _mesa_GetString( GLenum name )
113 {
114 GET_CURRENT_CONTEXT(ctx);
115 static const char *vendor = "Brian Paul";
116 static const char *renderer = "Mesa";
117
118 if (!ctx)
119 return NULL;
120
121 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, NULL);
122
123 /* this is a required driver function */
124 assert(ctx->Driver.GetString);
125 {
126 /* Give the driver the chance to handle this query */
127 const GLubyte *str = ctx->Driver.GetString(ctx, name);
128 if (str)
129 return str;
130 }
131
132 switch (name) {
133 case GL_VENDOR:
134 return (const GLubyte *) vendor;
135 case GL_RENDERER:
136 return (const GLubyte *) renderer;
137 case GL_VERSION:
138 return (const GLubyte *) ctx->VersionString;
139 case GL_EXTENSIONS:
140 if (ctx->API == API_OPENGL_CORE) {
141 _mesa_error(ctx, GL_INVALID_ENUM, "glGetString(GL_EXTENSIONS)");
142 return (const GLubyte *) 0;
143 }
144 return (const GLubyte *) ctx->Extensions.String;
145 case GL_SHADING_LANGUAGE_VERSION:
146 if (ctx->API == API_OPENGLES)
147 break;
148 return shading_language_version(ctx);
149 case GL_PROGRAM_ERROR_STRING_ARB:
150 if (ctx->API == API_OPENGL_COMPAT &&
151 (ctx->Extensions.ARB_fragment_program ||
152 ctx->Extensions.ARB_vertex_program)) {
153 return (const GLubyte *) ctx->Program.ErrorString;
154 }
155 break;
156 default:
157 break;
158 }
159
160 _mesa_error( ctx, GL_INVALID_ENUM, "glGetString" );
161 return (const GLubyte *) 0;
162 }
163
164
165 /**
166 * GL3
167 */
168 const GLubyte * GLAPIENTRY
_mesa_GetStringi(GLenum name,GLuint index)169 _mesa_GetStringi(GLenum name, GLuint index)
170 {
171 GET_CURRENT_CONTEXT(ctx);
172
173 if (!ctx)
174 return NULL;
175
176 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, NULL);
177
178 switch (name) {
179 case GL_EXTENSIONS:
180 if (index >= _mesa_get_extension_count(ctx)) {
181 _mesa_error(ctx, GL_INVALID_VALUE, "glGetStringi(index=%u)", index);
182 return (const GLubyte *) 0;
183 }
184 return _mesa_get_enabled_extension(ctx, index);
185 default:
186 _mesa_error(ctx, GL_INVALID_ENUM, "glGetStringi");
187 return (const GLubyte *) 0;
188 }
189 }
190
191
192
193 /**
194 * Return pointer-valued state, such as a vertex array pointer.
195 *
196 * \param pname names state to be queried
197 * \param params returns the pointer value
198 *
199 * \sa glGetPointerv().
200 *
201 * Tries to get the specified pointer via dd_function_table::GetPointerv,
202 * otherwise gets the specified pointer from the current context.
203 */
204 void GLAPIENTRY
_mesa_GetPointerv(GLenum pname,GLvoid ** params)205 _mesa_GetPointerv( GLenum pname, GLvoid **params )
206 {
207 GET_CURRENT_CONTEXT(ctx);
208 const GLuint clientUnit = ctx->Array.ActiveTexture;
209 const char *callerstr;
210
211 if (_mesa_is_desktop_gl(ctx))
212 callerstr = "glGetPointerv";
213 else
214 callerstr = "glGetPointervKHR";
215
216 if (!params)
217 return;
218
219 if (MESA_VERBOSE & VERBOSE_API)
220 _mesa_debug(ctx, "%s %s\n", callerstr, _mesa_enum_to_string(pname));
221
222 switch (pname) {
223 case GL_VERTEX_ARRAY_POINTER:
224 if (ctx->API != API_OPENGL_COMPAT && ctx->API != API_OPENGLES)
225 goto invalid_pname;
226 *params = (GLvoid *) ctx->Array.VAO->VertexAttrib[VERT_ATTRIB_POS].Ptr;
227 break;
228 case GL_NORMAL_ARRAY_POINTER:
229 if (ctx->API != API_OPENGL_COMPAT && ctx->API != API_OPENGLES)
230 goto invalid_pname;
231 *params = (GLvoid *) ctx->Array.VAO->VertexAttrib[VERT_ATTRIB_NORMAL].Ptr;
232 break;
233 case GL_COLOR_ARRAY_POINTER:
234 if (ctx->API != API_OPENGL_COMPAT && ctx->API != API_OPENGLES)
235 goto invalid_pname;
236 *params = (GLvoid *) ctx->Array.VAO->VertexAttrib[VERT_ATTRIB_COLOR0].Ptr;
237 break;
238 case GL_SECONDARY_COLOR_ARRAY_POINTER_EXT:
239 if (ctx->API != API_OPENGL_COMPAT)
240 goto invalid_pname;
241 *params = (GLvoid *) ctx->Array.VAO->VertexAttrib[VERT_ATTRIB_COLOR1].Ptr;
242 break;
243 case GL_FOG_COORDINATE_ARRAY_POINTER_EXT:
244 if (ctx->API != API_OPENGL_COMPAT)
245 goto invalid_pname;
246 *params = (GLvoid *) ctx->Array.VAO->VertexAttrib[VERT_ATTRIB_FOG].Ptr;
247 break;
248 case GL_INDEX_ARRAY_POINTER:
249 if (ctx->API != API_OPENGL_COMPAT)
250 goto invalid_pname;
251 *params = (GLvoid *) ctx->Array.VAO->VertexAttrib[VERT_ATTRIB_COLOR_INDEX].Ptr;
252 break;
253 case GL_TEXTURE_COORD_ARRAY_POINTER:
254 if (ctx->API != API_OPENGL_COMPAT && ctx->API != API_OPENGLES)
255 goto invalid_pname;
256 *params = (GLvoid *) ctx->Array.VAO->VertexAttrib[VERT_ATTRIB_TEX(clientUnit)].Ptr;
257 break;
258 case GL_EDGE_FLAG_ARRAY_POINTER:
259 if (ctx->API != API_OPENGL_COMPAT)
260 goto invalid_pname;
261 *params = (GLvoid *) ctx->Array.VAO->VertexAttrib[VERT_ATTRIB_EDGEFLAG].Ptr;
262 break;
263 case GL_FEEDBACK_BUFFER_POINTER:
264 if (ctx->API != API_OPENGL_COMPAT)
265 goto invalid_pname;
266 *params = ctx->Feedback.Buffer;
267 break;
268 case GL_SELECTION_BUFFER_POINTER:
269 if (ctx->API != API_OPENGL_COMPAT)
270 goto invalid_pname;
271 *params = ctx->Select.Buffer;
272 break;
273 case GL_POINT_SIZE_ARRAY_POINTER_OES:
274 if (ctx->API != API_OPENGLES)
275 goto invalid_pname;
276 *params = (GLvoid *) ctx->Array.VAO->VertexAttrib[VERT_ATTRIB_POINT_SIZE].Ptr;
277 break;
278 case GL_DEBUG_CALLBACK_FUNCTION_ARB:
279 case GL_DEBUG_CALLBACK_USER_PARAM_ARB:
280 *params = _mesa_get_debug_state_ptr(ctx, pname);
281 break;
282 default:
283 goto invalid_pname;
284 }
285
286 return;
287
288 invalid_pname:
289 _mesa_error( ctx, GL_INVALID_ENUM, "%s", callerstr);
290 return;
291 }
292
293
294 /**
295 * Returns the current GL error code, or GL_NO_ERROR.
296 * \return current error code
297 *
298 * Returns __struct gl_contextRec::ErrorValue.
299 */
300 GLenum GLAPIENTRY
_mesa_GetError(void)301 _mesa_GetError( void )
302 {
303 GET_CURRENT_CONTEXT(ctx);
304 GLenum e = ctx->ErrorValue;
305 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, 0);
306
307 if (MESA_VERBOSE & VERBOSE_API)
308 _mesa_debug(ctx, "glGetError <-- %s\n", _mesa_enum_to_string(e));
309
310 ctx->ErrorValue = (GLenum) GL_NO_ERROR;
311 ctx->ErrorDebugCount = 0;
312 return e;
313 }
314