xref: /third_party/mesa3d/src/mesa/main/getstring.c (revision bf215546) 
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#include "version.h"
36#include "spirv_extensions.h"
37#include "api_exec_decl.h"
38
39#include "pipe/p_context.h"
40#include "pipe/p_screen.h"
41
42/**
43 * Return the string for a glGetString(GL_SHADING_LANGUAGE_VERSION) query.
44 */
45static const GLubyte *
46shading_language_version(struct gl_context *ctx)
47{
48   switch (ctx->API) {
49   case API_OPENGL_COMPAT:
50   case API_OPENGL_CORE:
51      switch (ctx->Const.GLSLVersion) {
52      case 120:
53         return (const GLubyte *) "1.20";
54      case 130:
55         return (const GLubyte *) "1.30";
56      case 140:
57         return (const GLubyte *) "1.40";
58      case 150:
59         return (const GLubyte *) "1.50";
60      case 330:
61         return (const GLubyte *) "3.30";
62      case 400:
63         return (const GLubyte *) "4.00";
64      case 410:
65         return (const GLubyte *) "4.10";
66      case 420:
67         return (const GLubyte *) "4.20";
68      case 430:
69         return (const GLubyte *) "4.30";
70      case 440:
71         return (const GLubyte *) "4.40";
72      case 450:
73         return (const GLubyte *) "4.50";
74      case 460:
75         return (const GLubyte *) "4.60";
76      default:
77         _mesa_problem(ctx,
78                       "Invalid GLSL version in shading_language_version()");
79         return (const GLubyte *) 0;
80      }
81      break;
82
83   case API_OPENGLES2:
84      switch (ctx->Version) {
85      case 20:
86         return (const GLubyte *) "OpenGL ES GLSL ES 1.0.16";
87      case 30:
88         return (const GLubyte *) "OpenGL ES GLSL ES 3.00";
89      case 31:
90         return (const GLubyte *) "OpenGL ES GLSL ES 3.10";
91      case 32:
92         return (const GLubyte *) "OpenGL ES GLSL ES 3.20";
93      default:
94         _mesa_problem(ctx,
95                       "Invalid OpenGL ES version in shading_language_version()");
96         return (const GLubyte *) 0;
97      }
98   case API_OPENGLES:
99      FALLTHROUGH;
100
101   default:
102      _mesa_problem(ctx, "Unexpected API value in shading_language_version()");
103      return (const GLubyte *) 0;
104   }
105}
106
107
108/**
109 * Query string-valued state.  The return value should _not_ be freed by
110 * the caller.
111 *
112 * \param name  the state variable to query.
113 *
114 * \sa glGetString().
115 *
116 * Tries to get the string from dd_function_table::GetString, otherwise returns
117 * the hardcoded strings.
118 */
119const GLubyte * GLAPIENTRY
120_mesa_GetString( GLenum name )
121{
122   GET_CURRENT_CONTEXT(ctx);
123   static const char *vendor = "Brian Paul";
124   static const char *renderer = "Mesa";
125
126   if (!ctx)
127      return NULL;
128
129   ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, NULL);
130
131   if (ctx->Const.VendorOverride && name == GL_VENDOR) {
132      return (const GLubyte *) ctx->Const.VendorOverride;
133   }
134
135   if (ctx->Const.RendererOverride && name == GL_RENDERER) {
136      return (const GLubyte *) ctx->Const.RendererOverride;
137   }
138
139   struct pipe_screen *screen = ctx->pipe->screen;
140
141   switch (name) {
142      case GL_VENDOR: {
143         const GLubyte *str = (const GLubyte *)screen->get_vendor(screen);
144         if (str)
145            return str;
146         return (const GLubyte *) vendor;
147      }
148      case GL_RENDERER: {
149         const GLubyte *str = (const GLubyte *)screen->get_name(screen);
150         if (str)
151            return str;
152         return (const GLubyte *) renderer;
153      }
154      case GL_VERSION:
155         return (const GLubyte *) ctx->VersionString;
156      case GL_EXTENSIONS:
157         if (ctx->API == API_OPENGL_CORE) {
158            _mesa_error(ctx, GL_INVALID_ENUM, "glGetString(GL_EXTENSIONS)");
159            return (const GLubyte *) 0;
160         }
161         if (!ctx->Extensions.String)
162            ctx->Extensions.String = _mesa_make_extension_string(ctx);
163         return (const GLubyte *) ctx->Extensions.String;
164      case GL_SHADING_LANGUAGE_VERSION:
165         if (ctx->API == API_OPENGLES)
166            break;
167	 return shading_language_version(ctx);
168      case GL_PROGRAM_ERROR_STRING_ARB:
169         if (ctx->API == API_OPENGL_COMPAT &&
170             (ctx->Extensions.ARB_fragment_program ||
171              ctx->Extensions.ARB_vertex_program)) {
172            return (const GLubyte *) ctx->Program.ErrorString;
173         }
174         break;
175      default:
176         break;
177   }
178
179   _mesa_error( ctx, GL_INVALID_ENUM, "glGetString" );
180   return (const GLubyte *) 0;
181}
182
183
184/**
185 * GL3
186 */
187const GLubyte * GLAPIENTRY
188_mesa_GetStringi(GLenum name, GLuint index)
189{
190   GET_CURRENT_CONTEXT(ctx);
191
192   if (!ctx)
193      return NULL;
194
195   ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, NULL);
196
197   switch (name) {
198   case GL_EXTENSIONS:
199      if (index >= _mesa_get_extension_count(ctx)) {
200         _mesa_error(ctx, GL_INVALID_VALUE, "glGetStringi(index=%u)", index);
201         return (const GLubyte *) 0;
202      }
203      return _mesa_get_enabled_extension(ctx, index);
204   case GL_SHADING_LANGUAGE_VERSION:
205      {
206         char *version;
207         int num;
208         if (!_mesa_is_desktop_gl(ctx) || ctx->Version < 43) {
209            _mesa_error(ctx, GL_INVALID_ENUM,
210                        "glGetStringi(GL_SHADING_LANGUAGE_VERSION): "
211                        "supported only in GL4.3 and later");
212            return (const GLubyte *) 0;
213         }
214         num = _mesa_get_shading_language_version(ctx, index, &version);
215         if (index >= num) {
216            _mesa_error(ctx, GL_INVALID_VALUE,
217                        "glGetStringi(GL_SHADING_LANGUAGE_VERSION, index=%d)",
218                        index);
219            return (const GLubyte *) 0;
220         }
221         return (const GLubyte *) version;
222      }
223   case GL_SPIR_V_EXTENSIONS:
224      if (!ctx->Extensions.ARB_spirv_extensions) {
225         _mesa_error(ctx, GL_INVALID_ENUM, "glGetStringi");
226         return (const GLubyte *) 0;
227      }
228
229      if (index >= _mesa_get_spirv_extension_count(ctx)) {
230         _mesa_error(ctx, GL_INVALID_VALUE, "glGetStringi(index=%u)", index);
231         return (const GLubyte *) 0;
232      }
233      return _mesa_get_enabled_spirv_extension(ctx, index);
234
235   default:
236      _mesa_error(ctx, GL_INVALID_ENUM, "glGetStringi");
237      return (const GLubyte *) 0;
238   }
239}
240
241
242void
243_get_vao_pointerv(GLenum pname, struct gl_vertex_array_object* vao,
244                  GLvoid **params, const char* callerstr )
245{
246   GET_CURRENT_CONTEXT(ctx);
247   const GLuint clientUnit = ctx->Array.ActiveTexture;
248
249   if (!params)
250      return;
251
252   if (MESA_VERBOSE & VERBOSE_API)
253      _mesa_debug(ctx, "%s %s\n", callerstr, _mesa_enum_to_string(pname));
254
255   switch (pname) {
256      case GL_VERTEX_ARRAY_POINTER:
257         if (ctx->API != API_OPENGL_COMPAT && ctx->API != API_OPENGLES)
258            goto invalid_pname;
259         *params = (GLvoid *) vao->VertexAttrib[VERT_ATTRIB_POS].Ptr;
260         break;
261      case GL_NORMAL_ARRAY_POINTER:
262         if (ctx->API != API_OPENGL_COMPAT && ctx->API != API_OPENGLES)
263            goto invalid_pname;
264         *params = (GLvoid *) vao->VertexAttrib[VERT_ATTRIB_NORMAL].Ptr;
265         break;
266      case GL_COLOR_ARRAY_POINTER:
267         if (ctx->API != API_OPENGL_COMPAT && ctx->API != API_OPENGLES)
268            goto invalid_pname;
269         *params = (GLvoid *) vao->VertexAttrib[VERT_ATTRIB_COLOR0].Ptr;
270         break;
271      case GL_SECONDARY_COLOR_ARRAY_POINTER_EXT:
272         if (ctx->API != API_OPENGL_COMPAT)
273            goto invalid_pname;
274         *params = (GLvoid *) vao->VertexAttrib[VERT_ATTRIB_COLOR1].Ptr;
275         break;
276      case GL_FOG_COORDINATE_ARRAY_POINTER_EXT:
277         if (ctx->API != API_OPENGL_COMPAT)
278            goto invalid_pname;
279         *params = (GLvoid *) vao->VertexAttrib[VERT_ATTRIB_FOG].Ptr;
280         break;
281      case GL_INDEX_ARRAY_POINTER:
282         if (ctx->API != API_OPENGL_COMPAT)
283            goto invalid_pname;
284         *params = (GLvoid *) vao->VertexAttrib[VERT_ATTRIB_COLOR_INDEX].Ptr;
285         break;
286      case GL_TEXTURE_COORD_ARRAY_POINTER:
287         if (ctx->API != API_OPENGL_COMPAT && ctx->API != API_OPENGLES)
288            goto invalid_pname;
289         *params = (GLvoid *) vao->VertexAttrib[VERT_ATTRIB_TEX(clientUnit)].Ptr;
290         break;
291      case GL_EDGE_FLAG_ARRAY_POINTER:
292         if (ctx->API != API_OPENGL_COMPAT)
293            goto invalid_pname;
294         *params = (GLvoid *) vao->VertexAttrib[VERT_ATTRIB_EDGEFLAG].Ptr;
295         break;
296      case GL_FEEDBACK_BUFFER_POINTER:
297         if (ctx->API != API_OPENGL_COMPAT)
298            goto invalid_pname;
299         *params = ctx->Feedback.Buffer;
300         break;
301      case GL_SELECTION_BUFFER_POINTER:
302         if (ctx->API != API_OPENGL_COMPAT)
303            goto invalid_pname;
304         *params = ctx->Select.Buffer;
305         break;
306      case GL_POINT_SIZE_ARRAY_POINTER_OES:
307         if (ctx->API != API_OPENGLES)
308            goto invalid_pname;
309         *params = (GLvoid *) vao->VertexAttrib[VERT_ATTRIB_POINT_SIZE].Ptr;
310         break;
311      case GL_DEBUG_CALLBACK_FUNCTION_ARB:
312      case GL_DEBUG_CALLBACK_USER_PARAM_ARB:
313         *params = _mesa_get_debug_state_ptr(ctx, pname);
314         break;
315      default:
316         goto invalid_pname;
317   }
318
319   return;
320
321invalid_pname:
322   _mesa_error( ctx, GL_INVALID_ENUM, "%s", callerstr);
323   return;
324}
325
326
327/**
328 * Return pointer-valued state, such as a vertex array pointer.
329 *
330 * \param pname  names state to be queried
331 * \param params  returns the pointer value
332 *
333 * \sa glGetPointerv().
334 *
335 * Tries to get the specified pointer via dd_function_table::GetPointerv,
336 * otherwise gets the specified pointer from the current context.
337 */
338void GLAPIENTRY
339_mesa_GetPointerv( GLenum pname, GLvoid **params )
340{
341   GET_CURRENT_CONTEXT(ctx);
342   const char *callerstr;
343
344   if (_mesa_is_desktop_gl(ctx))
345      callerstr = "glGetPointerv";
346   else
347      callerstr = "glGetPointervKHR";
348
349   if (!params)
350      return;
351
352   _get_vao_pointerv(pname, ctx->Array.VAO, params, callerstr);
353}
354
355
356void GLAPIENTRY
357_mesa_GetPointerIndexedvEXT( GLenum pname, GLuint index, GLvoid **params )
358{
359   GET_CURRENT_CONTEXT(ctx);
360
361   if (!params)
362      return;
363
364   if (MESA_VERBOSE & VERBOSE_API)
365      _mesa_debug(ctx, "%s %s\n", "glGetPointerIndexedvEXT", _mesa_enum_to_string(pname));
366
367   switch (pname) {
368      case GL_TEXTURE_COORD_ARRAY_POINTER:
369         *params = (GLvoid *) ctx->Array.VAO->VertexAttrib[VERT_ATTRIB_TEX(index)].Ptr;
370         break;
371      default:
372         goto invalid_pname;
373   }
374
375   return;
376
377invalid_pname:
378   _mesa_error( ctx, GL_INVALID_ENUM, "glGetPointerIndexedvEXT");
379   return;
380}
381
382/**
383 * Returns the current GL error code, or GL_NO_ERROR.
384 * \return current error code
385 *
386 * Returns __struct gl_contextRec::ErrorValue.
387 */
388GLenum GLAPIENTRY
389_mesa_GetError( void )
390{
391   GET_CURRENT_CONTEXT(ctx);
392   GLenum e = ctx->ErrorValue;
393   ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, 0);
394
395   /* From Issue (3) of the KHR_no_error spec:
396    *
397    *    "Should glGetError() always return NO_ERROR or have undefined
398    *    results?
399    *
400    *    RESOLVED: It should for all errors except OUT_OF_MEMORY."
401    */
402   if (_mesa_is_no_error_enabled(ctx) && e != GL_OUT_OF_MEMORY) {
403      e = GL_NO_ERROR;
404   }
405
406   if (MESA_VERBOSE & VERBOSE_API)
407      _mesa_debug(ctx, "glGetError <-- %s\n", _mesa_enum_to_string(e));
408
409   ctx->ErrorValue = (GLenum) GL_NO_ERROR;
410   ctx->ErrorDebugCount = 0;
411   return e;
412}
413