src/video/haiku/SDL_bopengl.cc
author Sam Lantinga <slouken@libsdl.org>
Sun, 02 Feb 2014 00:53:27 -0800
changeset 8149 681eb46b8ac4
parent 8093 b43765095a6f
child 9619 b94b6d0bff0f
permissions -rw-r--r--
Fixed bug 2374 - Update copyright for 2014...

Is it that time already??
     1 /*
     2   Simple DirectMedia Layer
     3   Copyright (C) 1997-2014 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
    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 #define BGL_FLAGS BGL_RGB | BGL_DOUBLE
    39 
    40 static SDL_INLINE SDL_BWin *_ToBeWin(SDL_Window *window) {
    41 	return ((SDL_BWin*)(window->driverdata));
    42 }
    43 
    44 static SDL_INLINE SDL_BApp *_GetBeApp() {
    45 	return ((SDL_BApp*)be_app);
    46 }
    47 
    48 /* Passing a NULL path means load pointers from the application */
    49 int BE_GL_LoadLibrary(_THIS, const char *path)
    50 {
    51 /* FIXME: Is this working correctly? */
    52 	image_info info;
    53 			int32 cookie = 0;
    54 	while (get_next_image_info(0, &cookie, &info) == B_OK) {
    55 		void *location = NULL;
    56 		if( get_image_symbol(info.id, "glBegin", B_SYMBOL_TYPE_ANY,
    57 				&location) == B_OK) {
    58 
    59 			_this->gl_config.dll_handle = (void *) info.id;
    60 			_this->gl_config.driver_loaded = 1;
    61 			SDL_strlcpy(_this->gl_config.driver_path, "libGL.so",
    62 					SDL_arraysize(_this->gl_config.driver_path));
    63 		}
    64 	}
    65 	return 0;
    66 }
    67 
    68 void *BE_GL_GetProcAddress(_THIS, const char *proc)
    69 {
    70 	if (_this->gl_config.dll_handle != NULL) {
    71 		void *location = NULL;
    72 		status_t err;
    73 		if ((err =
    74 			get_image_symbol((image_id) _this->gl_config.dll_handle,
    75                               proc, B_SYMBOL_TYPE_ANY,
    76                               &location)) == B_OK) {
    77             return location;
    78         } else {
    79                 SDL_SetError("Couldn't find OpenGL symbol");
    80                 return NULL;
    81         }
    82 	} else {
    83 		SDL_SetError("OpenGL library not loaded");
    84 		return NULL;
    85 	}
    86 }
    87 
    88 
    89 
    90 
    91 void BE_GL_SwapWindow(_THIS, SDL_Window * window) {
    92     _ToBeWin(window)->SwapBuffers();
    93 }
    94 
    95 int BE_GL_MakeCurrent(_THIS, SDL_Window * window, SDL_GLContext context) {
    96 	_GetBeApp()->SetCurrentContext(((SDL_BWin*)context)->GetGLView());
    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 	bwin->CreateGLView(BGL_FLAGS);
   106 	return (SDL_GLContext)(bwin);
   107 }
   108 
   109 void BE_GL_DeleteContext(_THIS, SDL_GLContext context) {
   110 	/* Currently, automatically unlocks the view */
   111 	((SDL_BWin*)context)->RemoveGLView();
   112 }
   113 
   114 
   115 int BE_GL_SetSwapInterval(_THIS, int interval) {
   116 	/* TODO: Implement this, if necessary? */
   117 	return 0;
   118 }
   119 
   120 int BE_GL_GetSwapInterval(_THIS) {
   121 	/* TODO: Implement this, if necessary? */
   122 	return 0;
   123 }
   124 
   125 
   126 void BE_GL_UnloadLibrary(_THIS) {
   127 	/* TODO: Implement this, if necessary? */
   128 }
   129 
   130 
   131 /* FIXME: This function is meant to clear the OpenGL context when the video
   132    mode changes (see SDL_bmodes.cc), but it doesn't seem to help, and is not
   133    currently in use. */
   134 void BE_GL_RebootContexts(_THIS) {
   135 	SDL_Window *window = _this->windows;
   136 	while(window) {
   137 		SDL_BWin *bwin = _ToBeWin(window);
   138 		if(bwin->GetGLView()) {
   139 			bwin->LockLooper();
   140 			bwin->RemoveGLView();
   141 			bwin->CreateGLView(BGL_FLAGS);
   142 			bwin->UnlockLooper();
   143 		}
   144 		window = window->next;
   145 	}
   146 }
   147 
   148 
   149 #if 0 /* Functions from 1.2 that do not appear to be used in 1.3 */
   150 
   151     int BE_GL_GetAttribute(_THIS, SDL_GLattr attrib, int *value)
   152     {
   153         /*
   154            FIXME? Right now BE_GL_GetAttribute shouldn't be called between glBegin() and glEnd() - it doesn't use "cached" values
   155          */
   156         switch (attrib) {
   157         case SDL_GL_RED_SIZE:
   158             glGetIntegerv(GL_RED_BITS, (GLint *) value);
   159             break;
   160         case SDL_GL_GREEN_SIZE:
   161             glGetIntegerv(GL_GREEN_BITS, (GLint *) value);
   162             break;
   163         case SDL_GL_BLUE_SIZE:
   164             glGetIntegerv(GL_BLUE_BITS, (GLint *) value);
   165             break;
   166         case SDL_GL_ALPHA_SIZE:
   167             glGetIntegerv(GL_ALPHA_BITS, (GLint *) value);
   168             break;
   169         case SDL_GL_DOUBLEBUFFER:
   170             glGetBooleanv(GL_DOUBLEBUFFER, (GLboolean *) value);
   171             break;
   172         case SDL_GL_BUFFER_SIZE:
   173             int v;
   174             glGetIntegerv(GL_RED_BITS, (GLint *) & v);
   175             *value = v;
   176             glGetIntegerv(GL_GREEN_BITS, (GLint *) & v);
   177             *value += v;
   178             glGetIntegerv(GL_BLUE_BITS, (GLint *) & v);
   179             *value += v;
   180             glGetIntegerv(GL_ALPHA_BITS, (GLint *) & v);
   181             *value += v;
   182             break;
   183         case SDL_GL_DEPTH_SIZE:
   184             glGetIntegerv(GL_DEPTH_BITS, (GLint *) value);      /* Mesa creates 16 only? r5 always 32 */
   185             break;
   186         case SDL_GL_STENCIL_SIZE:
   187             glGetIntegerv(GL_STENCIL_BITS, (GLint *) value);
   188             break;
   189         case SDL_GL_ACCUM_RED_SIZE:
   190             glGetIntegerv(GL_ACCUM_RED_BITS, (GLint *) value);
   191             break;
   192         case SDL_GL_ACCUM_GREEN_SIZE:
   193             glGetIntegerv(GL_ACCUM_GREEN_BITS, (GLint *) value);
   194             break;
   195         case SDL_GL_ACCUM_BLUE_SIZE:
   196             glGetIntegerv(GL_ACCUM_BLUE_BITS, (GLint *) value);
   197             break;
   198         case SDL_GL_ACCUM_ALPHA_SIZE:
   199             glGetIntegerv(GL_ACCUM_ALPHA_BITS, (GLint *) value);
   200             break;
   201         case SDL_GL_STEREO:
   202         case SDL_GL_MULTISAMPLEBUFFERS:
   203         case SDL_GL_MULTISAMPLESAMPLES:
   204         default:
   205             *value = 0;
   206             return (-1);
   207         }
   208         return 0;
   209     }
   210 
   211 #endif
   212 
   213 
   214 
   215 #ifdef __cplusplus
   216 }
   217 #endif
   218 
   219 #endif /* SDL_VIDEO_DRIVER_HAIKU */