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source: vbox/trunk/src/VBox/GuestHost/OpenGL/state_tracker/state_occlude.c@ 25149

最後變更 在這個檔案從25149是 15532,由 vboxsync 提交於 16 年 前

crOpenGL: export to OSE
  • 屬性 svn:eol-style 設為 native
  • 屬性 svn:keywords 設為 Id
檔案大小: 7.3 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
141 FLUSH();
142
143 if (g->current.inBeginEnd) {
144 crStateError(__LINE__, __FILE__, GL_INVALID_OPERATION,
145 "glGetGetQueryivARB called in begin/end");
146 return;
147 }
148
149 switch (pname) {
150 case GL_QUERY_COUNTER_BITS_ARB:
151 *params = 8 * sizeof(GLuint);
152 break;
153 case GL_CURRENT_QUERY_ARB:
154 *params = o->currentQueryObject;
155 break;
156 default:
157 crStateError(__LINE__, __FILE__, GL_INVALID_ENUM,
158 "glGetGetQueryivARB(pname)");
159 return;
160 }
161}
162
163
164void STATE_APIENTRY
165crStateGetQueryObjectivARB(GLuint id, GLenum pname, GLint *params)
166{
167 CRContext *g = GetCurrentContext();
168 CROcclusionState *o = &(g->occlusion);
169 CROcclusionObject *q;
170
171 FLUSH();
172
173 if (g->current.inBeginEnd) {
174 crStateError(__LINE__, __FILE__, GL_INVALID_OPERATION,
175 "glGetGetQueryObjectivARB called in begin/end");
176 return;
177 }
178
179 q = (CROcclusionObject *) crHashtableSearch(o->objects, id);
180 if (!q || q->active) {
181 crStateError(__LINE__, __FILE__, GL_INVALID_OPERATION,
182 "glGetQueryObjectivARB");
183 return;
184 }
185
186 switch (pname) {
187 case GL_QUERY_RESULT_ARB:
188 *params = q->passedCounter;
189 break;
190 case GL_QUERY_RESULT_AVAILABLE_ARB:
191 *params = GL_TRUE;
192 break;
193 default:
194 crStateError(__LINE__, __FILE__, GL_INVALID_ENUM,
195 "glGetQueryObjectivARB(pname)");
196 return;
197 }
198}
199
200
201void STATE_APIENTRY
202crStateGetQueryObjectuivARB(GLuint id, GLenum pname, GLuint *params)
203{
204 CRContext *g = GetCurrentContext();
205 CROcclusionState *o = &(g->occlusion);
206 CROcclusionObject *q;
207
208 FLUSH();
209
210 if (g->current.inBeginEnd) {
211 crStateError(__LINE__, __FILE__, GL_INVALID_OPERATION,
212 "glGetGetQueryObjectuivARB called in begin/end");
213 return;
214 }
215
216 q = (CROcclusionObject *) crHashtableSearch(o->objects, id);
217 if (!q || q->active) {
218 crStateError(__LINE__, __FILE__, GL_INVALID_OPERATION,
219 "glGetQueryObjectuivARB");
220 return;
221 }
222
223 switch (pname) {
224 case GL_QUERY_RESULT_ARB:
225 *params = q->passedCounter;
226 break;
227 case GL_QUERY_RESULT_AVAILABLE_ARB:
228 /* XXX revisit when we have a hardware implementation! */
229 *params = GL_TRUE;
230 break;
231 default:
232 crStateError(__LINE__, __FILE__, GL_INVALID_ENUM,
233 "glGetQueryObjectuivARB(pname)");
234 return;
235 }
236}
237
238
239void STATE_APIENTRY
240crStateBeginQueryARB(GLenum target, GLuint id)
241{
242 CRContext *g = GetCurrentContext();
243 CROcclusionState *o = &(g->occlusion);
244 CROcclusionObject *q;
245
246 FLUSH();
247
248 if (g->current.inBeginEnd) {
249 crStateError(__LINE__, __FILE__, GL_INVALID_OPERATION,
250 "glGetGetQueryObjectuivARB called in begin/end");
251 return;
252 }
253
254 if (target != GL_SAMPLES_PASSED_ARB) {
255 crStateError(__LINE__, __FILE__, GL_INVALID_ENUM,
256 "glBeginQueryARB(target)");
257 return;
258 }
259
260 if (o->currentQueryObject) {
261 crStateError(__LINE__, __FILE__, GL_INVALID_OPERATION,
262 "glBeginQueryARB(target)");
263 return;
264 }
265
266 q = (CROcclusionObject *) crHashtableSearch(o->objects, id);
267 if (q && q->active) {
268 crStateError(__LINE__, __FILE__, GL_INVALID_OPERATION, "glBeginQueryARB");
269 return;
270 }
271 else if (!q) {
272 q = NewQueryObject(target, id);
273 if (!q) {
274 crStateError(__LINE__, __FILE__, GL_OUT_OF_MEMORY, "glBeginQueryARB");
275 return;
276 }
277 crHashtableAdd(o->objects, id, q);
278 }
279
280 q->active = GL_TRUE;
281 q->passedCounter = 0;
282 q->active = GL_TRUE;
283 q->passedCounter = 0;
284 o->currentQueryObject = id;
285}
286
287
288void STATE_APIENTRY
289crStateEndQueryARB(GLenum target)
290{
291 CRContext *g = GetCurrentContext();
292 CROcclusionState *o = &(g->occlusion);
293 CROcclusionObject *q;
294
295 FLUSH();
296
297 if (g->current.inBeginEnd) {
298 crStateError(__LINE__, __FILE__, GL_INVALID_OPERATION,
299 "glGetGetQueryObjectuivARB called in begin/end");
300 return;
301 }
302
303 if (target != GL_SAMPLES_PASSED_ARB) {
304 crStateError(__LINE__, __FILE__, GL_INVALID_ENUM, "glEndQueryARB(target)");
305 return;
306 }
307
308 q = (CROcclusionObject *) crHashtableSearch(o->objects, o->currentQueryObject);
309 if (!q || !q->active) {
310 crStateError(__LINE__, __FILE__, GL_INVALID_OPERATION,
311 "glEndQueryARB with glBeginQueryARB");
312 return;
313 }
314
315 q->passedCounter = 0;
316 q->active = GL_FALSE;
317 o->currentQueryObject = 0;
318}
319
320
321void crStateOcclusionDiff(CROcclusionBits *bb, CRbitvalue *bitID,
322 CRContext *fromCtx, CRContext *toCtx)
323{
324 /* Apparently, no occlusion state differencing needed */
325}
326
327
328/*
329 * XXX this function might need some testing/fixing.
330 */
331void crStateOcclusionSwitch(CROcclusionBits *bb, CRbitvalue *bitID,
332 CRContext *fromCtx, CRContext *toCtx)
333{
334 /* Apparently, no occlusion state switching needed */
335 /* Note: we better not do a switch while we're inside a glBeginQuery/
336 * glEndQuery sequence.
337 */
338 CRASSERT(!fromCtx->occlusion.currentQueryObject);
339}
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