src/video/haiku/SDL_bopengl.cc
author Ryan C. Gordon <icculus@icculus.org>
Wed, 09 Aug 2017 01:01:41 -0400
changeset 11199 714324c6dd1f
parent 11130 898db1eb3e3a
child 11811 5d94cb6b24d3
permissions -rw-r--r--
haiku: Patched SDL_bopengl.cc to compile on x86-64 Haiku.

Fixes Bugzilla #3729.
     1 /*
     2   Simple DirectMedia Layer
     3   Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
     4 
     5   This software is provided 'as-is', without any express or implied
     6   warranty.  In no event will the authors be held liable for any damages
     7   arising from the use of this software.
     8 
     9   Permission is granted to anyone to use this software for any purpose,
    10   including commercial applications, and to alter it and redistribute it
    11   freely, subject to the following restrictions:
    12 
    13   1. The origin of this software must not be misrepresented; you must not
    14      claim that you wrote the original software. If you use this software
    15      in a product, an acknowledgment in the product documentation would be
    16      appreciated but is not required.
    17   2. Altered source versions must be plainly marked as such, and must not be
    18      misrepresented as being the original software.
    19   3. This notice may not be removed or altered from any source distribution.
    20 */
    21 #include "../../SDL_internal.h"
    22 
    23 #if SDL_VIDEO_DRIVER_HAIKU && SDL_VIDEO_OPENGL
    24 
    25 #include "SDL_bopengl.h"
    26 
    27 #include <unistd.h>
    28 #include <KernelKit.h>
    29 #include <OpenGLKit.h>
    30 #include "SDL_BWin.h"
    31 #include "../../main/haiku/SDL_BApp.h"
    32 
    33 #ifdef __cplusplus
    34 extern "C" {
    35 #endif
    36 
    37 
    38 static SDL_INLINE SDL_BWin *_ToBeWin(SDL_Window *window) {
    39     return ((SDL_BWin*)(window->driverdata));
    40 }
    41 
    42 static SDL_INLINE SDL_BApp *_GetBeApp() {
    43     return ((SDL_BApp*)be_app);
    44 }
    45 
    46 /* Passing a NULL path means load pointers from the application */
    47 int BE_GL_LoadLibrary(_THIS, const char *path)
    48 {
    49 /* FIXME: Is this working correctly? */
    50     image_info info;
    51             int32 cookie = 0;
    52     while (get_next_image_info(0, &cookie, &info) == B_OK) {
    53         void *location = NULL;
    54         if( get_image_symbol(info.id, "glBegin", B_SYMBOL_TYPE_ANY,
    55                 &location) == B_OK) {
    56 
    57             _this->gl_config.dll_handle = (void *) (size_t) info.id;
    58             _this->gl_config.driver_loaded = 1;
    59             SDL_strlcpy(_this->gl_config.driver_path, "libGL.so",
    60                     SDL_arraysize(_this->gl_config.driver_path));
    61         }
    62     }
    63     return 0;
    64 }
    65 
    66 void *BE_GL_GetProcAddress(_THIS, const char *proc)
    67 {
    68     if (_this->gl_config.dll_handle != NULL) {
    69         void *location = NULL;
    70         status_t err;
    71         if ((err =
    72             get_image_symbol((image_id) (size_t) _this->gl_config.dll_handle,
    73                               proc, B_SYMBOL_TYPE_ANY,
    74                               &location)) == B_OK) {
    75             return location;
    76         } else {
    77                 SDL_SetError("Couldn't find OpenGL symbol");
    78                 return NULL;
    79         }
    80     } else {
    81         SDL_SetError("OpenGL library not loaded");
    82         return NULL;
    83     }
    84 }
    85 
    86 
    87 
    88 
    89 int BE_GL_SwapWindow(_THIS, SDL_Window * window) {
    90     _ToBeWin(window)->SwapBuffers();
    91     return 0;
    92 }
    93 
    94 int BE_GL_MakeCurrent(_THIS, SDL_Window * window, SDL_GLContext context) {
    95     SDL_BWin* win = (SDL_BWin*)context;
    96     _GetBeApp()->SetCurrentContext(win ? win->GetGLView() : NULL);
    97     return 0;
    98 }
    99 
   100 
   101 SDL_GLContext BE_GL_CreateContext(_THIS, SDL_Window * window) {
   102     /* FIXME: Not sure what flags should be included here; may want to have
   103        most of them */
   104     SDL_BWin *bwin = _ToBeWin(window);
   105     Uint32 gl_flags = BGL_RGB;
   106     if (_this->gl_config.alpha_size) {
   107         gl_flags |= BGL_ALPHA;
   108     }
   109     if (_this->gl_config.depth_size) {
   110         gl_flags |= BGL_DEPTH;
   111     }
   112     if (_this->gl_config.stencil_size) {
   113         gl_flags |= BGL_STENCIL;
   114     }
   115     if (_this->gl_config.double_buffer) {
   116         gl_flags |= BGL_DOUBLE;
   117     } else {
   118         gl_flags |= BGL_SINGLE;
   119     }
   120     if (_this->gl_config.accum_red_size ||
   121             _this->gl_config.accum_green_size ||
   122             _this->gl_config.accum_blue_size ||
   123             _this->gl_config.accum_alpha_size) {
   124         gl_flags |= BGL_ACCUM;
   125     }
   126     bwin->CreateGLView(gl_flags);
   127     return (SDL_GLContext)(bwin);
   128 }
   129 
   130 void BE_GL_DeleteContext(_THIS, SDL_GLContext context) {
   131     /* Currently, automatically unlocks the view */
   132     ((SDL_BWin*)context)->RemoveGLView();
   133 }
   134 
   135 
   136 int BE_GL_SetSwapInterval(_THIS, int interval) {
   137     /* TODO: Implement this, if necessary? */
   138     return SDL_Unsupported();
   139 }
   140 
   141 int BE_GL_GetSwapInterval(_THIS) {
   142     /* TODO: Implement this, if necessary? */
   143     return 0;
   144 }
   145 
   146 
   147 void BE_GL_UnloadLibrary(_THIS) {
   148     /* TODO: Implement this, if necessary? */
   149 }
   150 
   151 
   152 /* FIXME: This function is meant to clear the OpenGL context when the video
   153    mode changes (see SDL_bmodes.cc), but it doesn't seem to help, and is not
   154    currently in use. */
   155 void BE_GL_RebootContexts(_THIS) {
   156     SDL_Window *window = _this->windows;
   157     while(window) {
   158         SDL_BWin *bwin = _ToBeWin(window);
   159         if(bwin->GetGLView()) {
   160             bwin->LockLooper();
   161             bwin->RemoveGLView();
   162             bwin->CreateGLView(bwin->GetGLType());
   163             bwin->UnlockLooper();
   164         }
   165         window = window->next;
   166     }
   167 }
   168 
   169 
   170 #ifdef __cplusplus
   171 }
   172 #endif
   173 
   174 #endif /* SDL_VIDEO_DRIVER_HAIKU && SDL_VIDEO_OPENGL */
   175 
   176 /* vi: set ts=4 sw=4 expandtab: */