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  1. /*
  2.  * Copyright © 2010 Intel Corporation
  3.  * Copyright © 2011 Apple Inc.
  4.  *
  5.  * Permission is hereby granted, free of charge, to any person obtaining a
  6.  * copy of this software and associated documentation files (the "Soft-
  7.  * ware"), to deal in the Software without restriction, including without
  8.  * limitation the rights to use, copy, modify, merge, publish, distribute,
  9.  * and/or sell copies of the Software, and to permit persons to whom the
  10.  * Software is furnished to do so, provided that the above copyright
  11.  * notice(s) and this permission notice appear in all copies of the Soft-
  12.  * ware and that both the above copyright notice(s) and this permission
  13.  * notice appear in supporting documentation.
  14.  *
  15.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  16.  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
  17.  * ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY
  18.  * RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN
  19.  * THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSE-
  20.  * QUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
  21.  * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
  22.  * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFOR-
  23.  * MANCE OF THIS SOFTWARE.
  24.  *
  25.  * Except as contained in this notice, the name of a copyright holder shall
  26.  * not be used in advertising or otherwise to promote the sale, use or
  27.  * other dealings in this Software without prior written authorization of
  28.  * the copyright holder.
  29.  *
  30.  * Authors:
  31.  *   Kristian Høgsberg (krh@bitplanet.net)
  32.  */
  33.  
  34. #if defined(GLX_USE_APPLEGL)
  35.  
  36. #include <stdbool.h>
  37. #include <dlfcn.h>
  38.  
  39. #include "glxclient.h"
  40. #include "apple_glx_context.h"
  41. #include "apple_glx.h"
  42. #include "apple_cgl.h"
  43. #include "glx_error.h"
  44.  
  45. static void
  46. applegl_destroy_context(struct glx_context *gc)
  47. {
  48.    apple_glx_destroy_context(&gc->driContext, gc->psc->dpy);
  49. }
  50.  
  51. static int
  52. applegl_bind_context(struct glx_context *gc, struct glx_context *old,
  53.                      GLXDrawable draw, GLXDrawable read)
  54. {
  55.    Display *dpy = gc->psc->dpy;
  56.    bool error = apple_glx_make_current_context(dpy,
  57.                                                (old && old != &dummyContext) ? old->driContext : NULL,
  58.                                                gc ? gc->driContext : NULL, draw);
  59.  
  60.    apple_glx_diagnostic("%s: error %s\n", __func__, error ? "YES" : "NO");
  61.    if (error)
  62.       return 1; /* GLXBadContext is the same as Success (0) */
  63.  
  64.    apple_glapi_set_dispatch();
  65.  
  66.    return Success;
  67. }
  68.  
  69. static void
  70. applegl_unbind_context(struct glx_context *gc, struct glx_context *new)
  71. {
  72.    Display *dpy;
  73.    bool error;
  74.  
  75.    /* If we don't have a context, then we have nothing to unbind */
  76.    if (!gc)
  77.       return;
  78.  
  79.    /* If we have a new context, keep this one around and remove it during bind. */
  80.    if (new)
  81.       return;
  82.  
  83.    dpy = gc->psc->dpy;
  84.  
  85.    error = apple_glx_make_current_context(dpy,
  86.                                           (gc != &dummyContext) ? gc->driContext : NULL,
  87.                                           NULL, None);
  88.  
  89.    apple_glx_diagnostic("%s: error %s\n", __func__, error ? "YES" : "NO");
  90. }
  91.  
  92. static void
  93. applegl_wait_gl(struct glx_context *gc)
  94. {
  95.    glFinish();
  96. }
  97.  
  98. static void
  99. applegl_wait_x(struct glx_context *gc)
  100. {
  101.    Display *dpy = gc->psc->dpy;
  102.    apple_glx_waitx(dpy, gc->driContext);
  103. }
  104.  
  105. static void *
  106. applegl_get_proc_address(const char *symbol)
  107. {
  108.    return dlsym(apple_cgl_get_dl_handle(), symbol);
  109. }
  110.  
  111. static const struct glx_context_vtable applegl_context_vtable = {
  112.    applegl_destroy_context,
  113.    applegl_bind_context,
  114.    applegl_unbind_context,
  115.    applegl_wait_gl,
  116.    applegl_wait_x,
  117.    DRI_glXUseXFont,
  118.    NULL, /* bind_tex_image, */
  119.    NULL, /* release_tex_image, */
  120.    applegl_get_proc_address,
  121. };
  122.  
  123. struct glx_context *
  124. applegl_create_context(struct glx_screen *psc,
  125.                        struct glx_config *config,
  126.                        struct glx_context *shareList, int renderType)
  127. {
  128.    struct glx_context *gc;
  129.    int errorcode;
  130.    bool x11error;
  131.    Display *dpy = psc->dpy;
  132.    int screen = psc->scr;
  133.  
  134.    /* TODO: Integrate this with apple_glx_create_context and make
  135.     * struct apple_glx_context inherit from struct glx_context. */
  136.  
  137.    gc = calloc(1, sizeof(*gc));
  138.    if (gc == NULL)
  139.       return NULL;
  140.  
  141.    if (!glx_context_init(gc, psc, config)) {
  142.       free(gc);
  143.       return NULL;
  144.    }
  145.  
  146.    gc->vtable = &applegl_context_vtable;
  147.    gc->driContext = NULL;
  148.  
  149.    /* TODO: darwin: Integrate with above to do indirect */
  150.    if(apple_glx_create_context(&gc->driContext, dpy, screen, config,
  151.                                shareList ? shareList->driContext : NULL,
  152.                                &errorcode, &x11error)) {
  153.       __glXSendError(dpy, errorcode, 0, X_GLXCreateContext, x11error);
  154.       gc->vtable->destroy(gc);
  155.       return NULL;
  156.    }
  157.  
  158.    gc->currentContextTag = -1;
  159.    gc->config = config;
  160.    gc->isDirect = GL_TRUE;
  161.    gc->xid = 1; /* Just something not None, so we know when to destroy
  162.                  * it in MakeContextCurrent. */
  163.  
  164.    return gc;
  165. }
  166.  
  167. struct glx_screen_vtable applegl_screen_vtable = {
  168.    applegl_create_context
  169. };
  170.  
  171. _X_HIDDEN struct glx_screen *
  172. applegl_create_screen(int screen, struct glx_display * priv)
  173. {
  174.    struct glx_screen *psc;
  175.  
  176.    psc = calloc(1, sizeof *psc);
  177.    if (psc == NULL)
  178.       return NULL;
  179.  
  180.    glx_screen_init(psc, screen, priv);
  181.    psc->vtable = &applegl_screen_vtable;
  182.  
  183.    return psc;
  184. }
  185.  
  186. _X_HIDDEN int
  187. applegl_create_display(struct glx_display *glx_dpy)
  188. {
  189.    if(!apple_init_glx(glx_dpy->dpy))
  190.       return 1;
  191.  
  192.    return GLXBadContext;
  193. }
  194.  
  195. #endif
  196.