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_COMPAT
;
123 mesa_api
= API_OPENGLES
;
125 case __DRI_API_GLES2
:
126 case __DRI_API_GLES3
:
127 mesa_api
= API_OPENGLES2
;
129 case __DRI_API_OPENGL_CORE
:
130 mesa_api
= API_OPENGL_CORE
;
133 *error
= __DRI_CTX_ERROR_BAD_API
;
137 for (unsigned i
= 0; i
< num_attribs
; i
++) {
138 switch (attribs
[i
* 2]) {
139 case __DRI_CTX_ATTRIB_MAJOR_VERSION
:
140 major_version
= attribs
[i
* 2 + 1];
142 case __DRI_CTX_ATTRIB_MINOR_VERSION
:
143 minor_version
= attribs
[i
* 2 + 1];
145 case __DRI_CTX_ATTRIB_FLAGS
:
146 flags
= attribs
[i
* 2 + 1];
149 /* We can't create a context that satisfies the requirements of an
150 * attribute that we don't understand. Return failure.
156 /* Mesa does not support the GL_ARB_compatibilty extension or the
157 * compatibility profile. This means that we treat a API_OPENGL_COMPAT 3.1 as
158 * API_OPENGL_CORE and reject API_OPENGL_COMPAT 3.2+.
160 if (mesa_api
== API_OPENGL_COMPAT
&& major_version
== 3 && minor_version
== 1)
161 mesa_api
= API_OPENGL_CORE
;
163 if (mesa_api
== API_OPENGL_COMPAT
164 && ((major_version
> 3)
165 || (major_version
== 3 && minor_version
>= 2))) {
166 *error
= __DRI_CTX_ERROR_BAD_API
;
169 /* There are no forward-compatible contexts before OpenGL 3.0. The
170 * GLX_ARB_create_context spec says:
172 * "Forward-compatible contexts are defined only for OpenGL versions
175 * Moreover, Mesa can't fulfill the requirements of a forward-looking
176 * context. Return failure if a forward-looking context is requested.
178 * In Mesa, a debug context is the same as a regular context.
180 if (major_version
>= 3) {
181 if ((flags
& ~__DRI_CTX_FLAG_DEBUG
) != 0)
185 pcp
= CALLOC_STRUCT(__DRIcontextRec
);
189 pcp
->loaderPrivate
= data
;
191 pcp
->driScreenPriv
= screen
;
192 pcp
->driDrawablePriv
= NULL
;
193 pcp
->driReadablePriv
= NULL
;
195 if (!driDriverAPI
.CreateContext(mesa_api
, modes
, pcp
,
196 major_version
, minor_version
,
197 flags
, error
, shareCtx
)) {
205 static __DRIcontext
*
206 driCreateNewContextForAPI(__DRIscreen
*psp
, int api
,
207 const __DRIconfig
*config
,
208 __DRIcontext
*shared
, void *data
)
212 return driCreateContextAttribs(psp
, api
, config
, shared
, 0, NULL
,
216 static __DRIcontext
*
217 driCreateNewContext(__DRIscreen
*psp
, const __DRIconfig
*config
,
218 __DRIcontext
*shared
, void *data
)
220 return driCreateNewContextForAPI(psp
, __DRI_API_OPENGL
,
221 config
, shared
, data
);
225 driDestroyContext(__DRIcontext
*pcp
)
228 driDriverAPI
.DestroyContext(pcp
);
234 driCopyContext(__DRIcontext
*dst
, __DRIcontext
*src
, unsigned long mask
)
239 static void dri_get_drawable(__DRIdrawable
*pdp
);
240 static void dri_put_drawable(__DRIdrawable
*pdp
);
242 static int driBindContext(__DRIcontext
*pcp
,
246 /* Bind the drawable to the context */
248 pcp
->driDrawablePriv
= pdp
;
249 pcp
->driReadablePriv
= prp
;
251 pdp
->driContextPriv
= pcp
;
252 dri_get_drawable(pdp
);
254 if (prp
&& pdp
!= prp
) {
255 dri_get_drawable(prp
);
259 return driDriverAPI
.MakeCurrent(pcp
, pdp
, prp
);
262 static int driUnbindContext(__DRIcontext
*pcp
)
270 pdp
= pcp
->driDrawablePriv
;
271 prp
= pcp
->driReadablePriv
;
273 /* already unbound */
277 driDriverAPI
.UnbindContext(pcp
);
279 dri_put_drawable(pdp
);
282 dri_put_drawable(prp
);
285 pcp
->driDrawablePriv
= NULL
;
286 pcp
->driReadablePriv
= NULL
;
296 static void dri_get_drawable(__DRIdrawable
*pdp
)
301 static void dri_put_drawable(__DRIdrawable
*pdp
)
308 driDriverAPI
.DestroyBuffer(pdp
);
313 static __DRIdrawable
*
314 driCreateNewDrawable(__DRIscreen
*psp
,
315 const __DRIconfig
*config
, void *data
)
319 pdp
= CALLOC_STRUCT(__DRIdrawableRec
);
323 pdp
->loaderPrivate
= data
;
325 pdp
->driScreenPriv
= psp
;
326 pdp
->driContextPriv
= NULL
;
328 dri_get_drawable(pdp
);
330 if (!driDriverAPI
.CreateBuffer(psp
, pdp
, &config
->modes
, GL_FALSE
)) {
335 pdp
->lastStamp
= 1; /* const */
341 driDestroyDrawable(__DRIdrawable
*pdp
)
343 dri_put_drawable(pdp
);
346 static void driSwapBuffers(__DRIdrawable
*pdp
)
348 driDriverAPI
.SwapBuffers(pdp
);
351 const __DRIcoreExtension driCoreExtension
= {
352 { __DRI_CORE
, __DRI_CORE_VERSION
},
353 NULL
, /* driCreateNewScreen */
357 driIndexConfigAttrib
,
358 NULL
, /* driCreateNewDrawable */
368 const __DRIswrastExtension driSWRastExtension
= {
369 { __DRI_SWRAST
, __DRI_SWRAST_VERSION
},
371 driCreateNewDrawable
,
372 driCreateNewContextForAPI
,
373 driCreateContextAttribs