2 * Copyright 1998-1999 Precision Insight, Inc., Cedar Park, Texas.
4 * Copyright 2010 George Sapountzis <gsapountzis@gmail.com>
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:
13 * The above copyright notice and this permission notice shall be included
14 * in all copies or substantial portions of the Software.
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 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
20 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
27 * DRISW utility functions, i.e. dri_util.c stripped from drm-specific bits.
39 setupLoaderExtensions(__DRIscreen
*psp
,
40 const __DRIextension
**extensions
)
44 for (i
= 0; extensions
[i
]; i
++) {
45 if (strcmp(extensions
[i
]->name
, __DRI_SWRAST_LOADER
) == 0)
46 psp
->swrast_loader
= (__DRIswrastLoaderExtension
*) extensions
[i
];
51 driCreateNewScreen(int scrn
, const __DRIextension
**extensions
,
52 const __DRIconfig
***driver_configs
, void *data
)
54 static const __DRIextension
*emptyExtensionList
[] = { NULL
};
57 psp
= CALLOC_STRUCT(__DRIscreenRec
);
61 setupLoaderExtensions(psp
, extensions
);
63 psp
->loaderPrivate
= data
;
65 psp
->extensions
= emptyExtensionList
;
69 *driver_configs
= driDriverAPI
.InitScreen(psp
);
70 if (*driver_configs
== NULL
) {
78 static void driDestroyScreen(__DRIscreen
*psp
)
81 driDriverAPI
.DestroyScreen(psp
);
86 static const __DRIextension
**driGetExtensions(__DRIscreen
*psp
)
88 return psp
->extensions
;
97 driCreateContextAttribs(__DRIscreen
*screen
, int api
,
98 const __DRIconfig
*config
,
100 unsigned num_attribs
,
101 const uint32_t *attribs
,
106 const struct gl_config
*modes
= (config
!= NULL
) ? &config
->modes
: NULL
;
107 void * const shareCtx
= (shared
!= NULL
) ? shared
->driverPrivate
: NULL
;
109 unsigned major_version
= 1;
110 unsigned minor_version
= 0;
113 /* Either num_attribs is zero and attribs is NULL, or num_attribs is not
114 * zero and attribs is not NULL.
116 assert((num_attribs
== 0) == (attribs
== NULL
));
119 case __DRI_API_OPENGL
:
120 mesa_api
= API_OPENGL
;
123 mesa_api
= API_OPENGLES
;
125 case __DRI_API_GLES2
:
126 mesa_api
= API_OPENGLES2
;
128 case __DRI_API_OPENGL_CORE
:
133 for (unsigned i
= 0; i
< num_attribs
; i
++) {
134 switch (attribs
[i
* 2]) {
135 case __DRI_CTX_ATTRIB_MAJOR_VERSION
:
136 major_version
= attribs
[i
* 2 + 1];
138 case __DRI_CTX_ATTRIB_MINOR_VERSION
:
139 minor_version
= attribs
[i
* 2 + 1];
141 case __DRI_CTX_ATTRIB_FLAGS
:
142 flags
= attribs
[i
* 2 + 1];
145 /* We can't create a context that satisfies the requirements of an
146 * attribute that we don't understand. Return failure.
152 /* There are no forward-compatible contexts before OpenGL 3.0. The
153 * GLX_ARB_create_context spec says:
155 * "Forward-compatible contexts are defined only for OpenGL versions
158 * Moreover, Mesa can't fulfill the requirements of a forward-looking
159 * context. Return failure if a forward-looking context is requested.
161 * In Mesa, a debug context is the same as a regular context.
163 if (major_version
>= 3) {
164 if ((flags
& ~__DRI_CTX_FLAG_DEBUG
) != 0)
168 pcp
= CALLOC_STRUCT(__DRIcontextRec
);
172 pcp
->loaderPrivate
= data
;
174 pcp
->driScreenPriv
= screen
;
175 pcp
->driDrawablePriv
= NULL
;
176 pcp
->driReadablePriv
= NULL
;
178 if (!driDriverAPI
.CreateContext(mesa_api
, modes
, pcp
,
179 major_version
, minor_version
,
180 flags
, error
, shareCtx
)) {
188 static __DRIcontext
*
189 driCreateNewContextForAPI(__DRIscreen
*psp
, int api
,
190 const __DRIconfig
*config
,
191 __DRIcontext
*shared
, void *data
)
195 return driCreateContextAttribs(psp
, api
, config
, shared
, 0, NULL
,
199 static __DRIcontext
*
200 driCreateNewContext(__DRIscreen
*psp
, const __DRIconfig
*config
,
201 __DRIcontext
*shared
, void *data
)
203 return driCreateNewContextForAPI(psp
, __DRI_API_OPENGL
,
204 config
, shared
, data
);
208 driDestroyContext(__DRIcontext
*pcp
)
211 driDriverAPI
.DestroyContext(pcp
);
217 driCopyContext(__DRIcontext
*dst
, __DRIcontext
*src
, unsigned long mask
)
222 static void dri_get_drawable(__DRIdrawable
*pdp
);
223 static void dri_put_drawable(__DRIdrawable
*pdp
);
225 static int driBindContext(__DRIcontext
*pcp
,
229 /* Bind the drawable to the context */
231 pcp
->driDrawablePriv
= pdp
;
232 pcp
->driReadablePriv
= prp
;
234 pdp
->driContextPriv
= pcp
;
235 dri_get_drawable(pdp
);
237 if (prp
&& pdp
!= prp
) {
238 dri_get_drawable(prp
);
242 return driDriverAPI
.MakeCurrent(pcp
, pdp
, prp
);
245 static int driUnbindContext(__DRIcontext
*pcp
)
253 pdp
= pcp
->driDrawablePriv
;
254 prp
= pcp
->driReadablePriv
;
256 /* already unbound */
260 driDriverAPI
.UnbindContext(pcp
);
262 dri_put_drawable(pdp
);
265 dri_put_drawable(prp
);
268 pcp
->driDrawablePriv
= NULL
;
269 pcp
->driReadablePriv
= NULL
;
279 static void dri_get_drawable(__DRIdrawable
*pdp
)
284 static void dri_put_drawable(__DRIdrawable
*pdp
)
291 driDriverAPI
.DestroyBuffer(pdp
);
296 static __DRIdrawable
*
297 driCreateNewDrawable(__DRIscreen
*psp
,
298 const __DRIconfig
*config
, void *data
)
302 pdp
= CALLOC_STRUCT(__DRIdrawableRec
);
306 pdp
->loaderPrivate
= data
;
308 pdp
->driScreenPriv
= psp
;
309 pdp
->driContextPriv
= NULL
;
311 dri_get_drawable(pdp
);
313 if (!driDriverAPI
.CreateBuffer(psp
, pdp
, &config
->modes
, GL_FALSE
)) {
318 pdp
->lastStamp
= 1; /* const */
324 driDestroyDrawable(__DRIdrawable
*pdp
)
326 dri_put_drawable(pdp
);
329 static void driSwapBuffers(__DRIdrawable
*pdp
)
331 driDriverAPI
.SwapBuffers(pdp
);
334 const __DRIcoreExtension driCoreExtension
= {
335 { __DRI_CORE
, __DRI_CORE_VERSION
},
336 NULL
, /* driCreateNewScreen */
340 driIndexConfigAttrib
,
341 NULL
, /* driCreateNewDrawable */
351 const __DRIswrastExtension driSWRastExtension
= {
352 { __DRI_SWRAST
, __DRI_SWRAST_VERSION
},
354 driCreateNewDrawable
,
355 driCreateNewContextForAPI
,
356 driCreateContextAttribs