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source: vbox/trunk/src/VBox/GuestHost/OpenGL/state_tracker/state_occlude.c@ 76384

最後變更 在這個檔案從76384是 69392,由 vboxsync 提交於 7 年 前

GuestHost/OpenGL: scm updates
  • 屬性 svn:eol-style 設為 native
  • 屬性 svn:keywords 設為 Id Revision
檔案大小: 7.4 KB
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1/* Copyright (c) 2001, Stanford University
2 * All rights reserved
3 *
4 * See the file LICENSE.txt for information on redistributing this software.
5 */
6
7#include "state.h"
8#include "state/cr_statetypes.h"
9#include "state/cr_statefuncs.h"
10#include "state_internals.h"
11#include "cr_mem.h"
12
13
14void
15crStateOcclusionInit(CRContext *ctx)
16{
17 CROcclusionState *o = &ctx->occlusion;
18
19 o->objects = crAllocHashtable();
20 o->currentQueryObject = 0;
21}
22
23
24void
25crStateOcclusionDestroy(CRContext *ctx)
26{
27 CROcclusionState *o = &(ctx->occlusion);
28 crFreeHashtable(o->objects, crFree);
29}
30
31
32static CROcclusionObject *
33NewQueryObject(GLenum target, GLuint id)
34{
35 CROcclusionObject *q = (CROcclusionObject *) crAlloc(sizeof(CROcclusionObject));
36 if (q) {
37 q->target = target;
38 q->name = id;
39 q->passedCounter = 0;
40 q->active = GL_FALSE;
41 }
42 return q;
43}
44
45
46void STATE_APIENTRY
47crStateDeleteQueriesARB(GLsizei n, const GLuint *ids)
48{
49 CRContext *g = GetCurrentContext();
50 CROcclusionState *o = &(g->occlusion);
51 /*CRStateBits *sb = GetCurrentBits();*/
52 /*CROcclusionBits *bb = &(sb->occlusion);*/
53 int i;
54
55 FLUSH();
56
57 if (g->current.inBeginEnd) {
58 crStateError(__LINE__, __FILE__, GL_INVALID_OPERATION,
59 "glDeleteQueriesARB called in Begin/End");
60 return;
61 }
62
63 if (n < 0) {
64 crStateError(__LINE__, __FILE__, GL_INVALID_VALUE,
65 "glDeleteQueriesARB(n < 0)");
66 return;
67 }
68
69 for (i = 0; i < n; i++) {
70 if (ids[i]) {
71 CROcclusionObject *q = (CROcclusionObject *)
72 crHashtableSearch(o->objects, ids[i]);
73 if (q) {
74 crHashtableDelete(o->objects, ids[i], crFree);
75 }
76 }
77 }
78}
79
80
81void STATE_APIENTRY
82crStateGenQueriesARB(GLsizei n, GLuint * queries)
83{
84 CRContext *g = GetCurrentContext();
85 CROcclusionState *o = &(g->occlusion);
86 GLint start;
87
88 FLUSH();
89
90 if (g->current.inBeginEnd) {
91 crStateError(__LINE__, __FILE__, GL_INVALID_OPERATION,
92 "glGenQueriesARB called in Begin/End");
93 return;
94 }
95
96 if (n < 0) {
97 crStateError(__LINE__, __FILE__, GL_INVALID_VALUE,
98 "glGenQueriesARB(n < 0)");
99 return;
100 }
101
102 start = crHashtableAllocKeys(o->objects, n);
103 if (start) {
104 GLint i;
105 for (i = 0; i < n; i++)
106 queries[i] = (GLuint) (start + i);
107 }
108 else {
109 crStateError(__LINE__, __FILE__, GL_OUT_OF_MEMORY, "glGenQueriesARB");
110 }
111}
112
113
114GLboolean STATE_APIENTRY
115crStateIsQueryARB(GLuint id)
116{
117 CRContext *g = GetCurrentContext();
118 CROcclusionState *o = &(g->occlusion);
119
120 FLUSH();
121
122 if (g->current.inBeginEnd) {
123 crStateError(__LINE__, __FILE__, GL_INVALID_OPERATION,
124 "glIsQueryARB called in begin/end");
125 return GL_FALSE;
126 }
127
128 if (id && crHashtableIsKeyUsed(o->objects, id))
129 return GL_TRUE;
130 else
131 return GL_FALSE;
132}
133
134
135void STATE_APIENTRY
136crStateGetQueryivARB(GLenum target, GLenum pname, GLint *params)
137{
138 CRContext *g = GetCurrentContext();
139 CROcclusionState *o = &(g->occlusion);
140 (void)target;
141
142 FLUSH();
143
144 if (g->current.inBeginEnd) {
145 crStateError(__LINE__, __FILE__, GL_INVALID_OPERATION,
146 "glGetGetQueryivARB called in begin/end");
147 return;
148 }
149
150 switch (pname) {
151 case GL_QUERY_COUNTER_BITS_ARB:
152 *params = 8 * sizeof(GLuint);
153 break;
154 case GL_CURRENT_QUERY_ARB:
155 *params = o->currentQueryObject;
156 break;
157 default:
158 crStateError(__LINE__, __FILE__, GL_INVALID_ENUM,
159 "glGetGetQueryivARB(pname)");
160 return;
161 }
162}
163
164
165void STATE_APIENTRY
166crStateGetQueryObjectivARB(GLuint id, GLenum pname, GLint *params)
167{
168 CRContext *g = GetCurrentContext();
169 CROcclusionState *o = &(g->occlusion);
170 CROcclusionObject *q;
171
172 FLUSH();
173
174 if (g->current.inBeginEnd) {
175 crStateError(__LINE__, __FILE__, GL_INVALID_OPERATION,
176 "glGetGetQueryObjectivARB called in begin/end");
177 return;
178 }
179
180 q = (CROcclusionObject *) crHashtableSearch(o->objects, id);
181 if (!q || q->active) {
182 crStateError(__LINE__, __FILE__, GL_INVALID_OPERATION,
183 "glGetQueryObjectivARB");
184 return;
185 }
186
187 switch (pname) {
188 case GL_QUERY_RESULT_ARB:
189 *params = q->passedCounter;
190 break;
191 case GL_QUERY_RESULT_AVAILABLE_ARB:
192 *params = GL_TRUE;
193 break;
194 default:
195 crStateError(__LINE__, __FILE__, GL_INVALID_ENUM,
196 "glGetQueryObjectivARB(pname)");
197 return;
198 }
199}
200
201
202void STATE_APIENTRY
203crStateGetQueryObjectuivARB(GLuint id, GLenum pname, GLuint *params)
204{
205 CRContext *g = GetCurrentContext();
206 CROcclusionState *o = &(g->occlusion);
207 CROcclusionObject *q;
208
209 FLUSH();
210
211 if (g->current.inBeginEnd) {
212 crStateError(__LINE__, __FILE__, GL_INVALID_OPERATION,
213 "glGetGetQueryObjectuivARB called in begin/end");
214 return;
215 }
216
217 q = (CROcclusionObject *) crHashtableSearch(o->objects, id);
218 if (!q || q->active) {
219 crStateError(__LINE__, __FILE__, GL_INVALID_OPERATION,
220 "glGetQueryObjectuivARB");
221 return;
222 }
223
224 switch (pname) {
225 case GL_QUERY_RESULT_ARB:
226 *params = q->passedCounter;
227 break;
228 case GL_QUERY_RESULT_AVAILABLE_ARB:
229 /* XXX revisit when we have a hardware implementation! */
230 *params = GL_TRUE;
231 break;
232 default:
233 crStateError(__LINE__, __FILE__, GL_INVALID_ENUM,
234 "glGetQueryObjectuivARB(pname)");
235 return;
236 }
237}
238
239
240void STATE_APIENTRY
241crStateBeginQueryARB(GLenum target, GLuint id)
242{
243 CRContext *g = GetCurrentContext();
244 CROcclusionState *o = &(g->occlusion);
245 CROcclusionObject *q;
246
247 FLUSH();
248
249 if (g->current.inBeginEnd) {
250 crStateError(__LINE__, __FILE__, GL_INVALID_OPERATION,
251 "glGetGetQueryObjectuivARB called in begin/end");
252 return;
253 }
254
255 if (target != GL_SAMPLES_PASSED_ARB) {
256 crStateError(__LINE__, __FILE__, GL_INVALID_ENUM,
257 "glBeginQueryARB(target)");
258 return;
259 }
260
261 if (o->currentQueryObject) {
262 crStateError(__LINE__, __FILE__, GL_INVALID_OPERATION,
263 "glBeginQueryARB(target)");
264 return;
265 }
266
267 q = (CROcclusionObject *) crHashtableSearch(o->objects, id);
268 if (q && q->active) {
269 crStateError(__LINE__, __FILE__, GL_INVALID_OPERATION, "glBeginQueryARB");
270 return;
271 }
272 else if (!q) {
273 q = NewQueryObject(target, id);
274 if (!q) {
275 crStateError(__LINE__, __FILE__, GL_OUT_OF_MEMORY, "glBeginQueryARB");
276 return;
277 }
278 crHashtableAdd(o->objects, id, q);
279 }
280
281 q->active = GL_TRUE;
282 q->passedCounter = 0;
283 q->active = GL_TRUE;
284 q->passedCounter = 0;
285 o->currentQueryObject = id;
286}
287
288
289void STATE_APIENTRY
290crStateEndQueryARB(GLenum target)
291{
292 CRContext *g = GetCurrentContext();
293 CROcclusionState *o = &(g->occlusion);
294 CROcclusionObject *q;
295
296 FLUSH();
297
298 if (g->current.inBeginEnd) {
299 crStateError(__LINE__, __FILE__, GL_INVALID_OPERATION,
300 "glGetGetQueryObjectuivARB called in begin/end");
301 return;
302 }
303
304 if (target != GL_SAMPLES_PASSED_ARB) {
305 crStateError(__LINE__, __FILE__, GL_INVALID_ENUM, "glEndQueryARB(target)");
306 return;
307 }
308
309 q = (CROcclusionObject *) crHashtableSearch(o->objects, o->currentQueryObject);
310 if (!q || !q->active) {
311 crStateError(__LINE__, __FILE__, GL_INVALID_OPERATION,
312 "glEndQueryARB with glBeginQueryARB");
313 return;
314 }
315
316 q->passedCounter = 0;
317 q->active = GL_FALSE;
318 o->currentQueryObject = 0;
319}
320
321
322void crStateOcclusionDiff(CROcclusionBits *bb, CRbitvalue *bitID,
323 CRContext *fromCtx, CRContext *toCtx)
324{
325 /* Apparently, no occlusion state differencing needed */
326 (void)bb; (void)bitID; (void)fromCtx; (void)toCtx;
327}
328
329
330/*
331 * XXX this function might need some testing/fixing.
332 */
333void crStateOcclusionSwitch(CROcclusionBits *bb, CRbitvalue *bitID,
334 CRContext *fromCtx, CRContext *toCtx)
335{
336 /* Apparently, no occlusion state switching needed */
337 /* Note: we better not do a switch while we're inside a glBeginQuery/
338 * glEndQuery sequence.
339 */
340 (void)bb; (void)bitID; (void)fromCtx; (void)toCtx;
341 CRASSERT(!fromCtx->occlusion.currentQueryObject);
342}
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