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 */
45 static const GLubyte *
shading_language_version(struct gl_context * ctx)46 shading_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 */
119 const GLubyte * GLAPIENTRY
_mesa_GetString(GLenum name)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 */
187 const GLubyte * GLAPIENTRY
_mesa_GetStringi(GLenum name,GLuint index)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
242 void
_get_vao_pointerv(GLenum pname,struct gl_vertex_array_object * vao,GLvoid ** params,const char * callerstr)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
321 invalid_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 */
338 void GLAPIENTRY
_mesa_GetPointerv(GLenum pname,GLvoid ** params)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
356 void GLAPIENTRY
_mesa_GetPointerIndexedvEXT(GLenum pname,GLuint index,GLvoid ** params)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
377 invalid_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 */
388 GLenum GLAPIENTRY
_mesa_GetError(void)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