| /* |
| SDL - Simple DirectMedia Layer |
| Copyright (C) 1997-2006 Sam Lantinga |
| |
| This library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| This library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with this library; if not, write to the Free Software |
| Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| |
| Sam Lantinga |
| slouken@libsdl.org |
| */ |
| #include "SDL_config.h" |
| |
| #include <dlfcn.h> |
| #include "SDL.h" |
| #include "SDL_ph_gl.h" |
| |
| #if SDL_VIDEO_OPENGL |
| |
| #if (_NTO_VERSION >= 630) |
| /* PhotonGL functions */ |
| GLPH_DECLARE_FUNCS; |
| #endif /* 6.3.0 */ |
| |
| #if (_NTO_VERSION < 630) |
| void |
| ph_GL_SwapBuffers(_THIS) |
| { |
| PgSetRegion(PtWidgetRid(window)); |
| PdOpenGLContextSwapBuffers(oglctx); |
| } |
| #else |
| void |
| ph_GL_SwapBuffers(_THIS) |
| { |
| qnxgl_swap_buffers(oglbuffers); |
| } |
| #endif /* 6.3.0 */ |
| |
| int |
| ph_GL_GetAttribute(_THIS, SDL_GLattr attrib, int *value) |
| { |
| switch (attrib) { |
| case SDL_GL_DOUBLEBUFFER: |
| *value = this->gl_config.double_buffer; |
| break; |
| case SDL_GL_STENCIL_SIZE: |
| *value = this->gl_config.stencil_size; |
| break; |
| case SDL_GL_DEPTH_SIZE: |
| *value = this->gl_config.depth_size; |
| break; |
| #if (_NTO_VERSION >= 630) |
| case SDL_GL_RED_SIZE: |
| *value = this->gl_config.red_size; |
| break; |
| case SDL_GL_GREEN_SIZE: |
| *value = this->gl_config.green_size; |
| break; |
| case SDL_GL_BLUE_SIZE: |
| *value = this->gl_config.blue_size; |
| break; |
| case SDL_GL_ALPHA_SIZE: |
| *value = this->gl_config.alpha_size; |
| break; |
| case SDL_GL_ACCUM_RED_SIZE: |
| *value = this->gl_config.accum_red_size; |
| break; |
| case SDL_GL_ACCUM_GREEN_SIZE: |
| *value = this->gl_config.accum_green_size; |
| break; |
| case SDL_GL_ACCUM_BLUE_SIZE: |
| *value = this->gl_config.accum_blue_size; |
| break; |
| case SDL_GL_ACCUM_ALPHA_SIZE: |
| *value = this->gl_config.accum_alpha_size; |
| break; |
| case SDL_GL_STEREO: |
| *value = this->gl_config.stereo; |
| break; |
| #endif /* 6.3.0 */ |
| default: |
| *value = 0; |
| return (-1); |
| } |
| return 0; |
| } |
| |
| #if (_NTO_VERSION < 630) |
| int |
| ph_GL_LoadLibrary(_THIS, const char *path) |
| { |
| /* if code compiled with SDL_VIDEO_OPENGL, that mean that library already linked */ |
| this->gl_config.driver_loaded = 1; |
| |
| return 0; |
| } |
| #else |
| int |
| ph_GL_LoadLibrary(_THIS, const char *path) |
| { |
| void *handle; |
| int dlopen_flags = RTLD_WORLD | RTLD_GROUP; |
| |
| if (this->gl_config.dll_handle != NULL) { |
| return 0; |
| } |
| |
| handle = dlopen(path, dlopen_flags); |
| |
| if (handle == NULL) { |
| SDL_SetError("ph_GL_LoadLibrary(): Could not load OpenGL library"); |
| return -1; |
| } |
| |
| this->gl_config.dll_handle = handle; |
| this->gl_config.driver_loaded = 1; |
| |
| SDL_strlcpy(this->gl_config.driver_path, path, |
| SDL_arraysize(this->gl_config.driver_path)); |
| |
| return 0; |
| } |
| #endif /* 6.3.0 */ |
| |
| #if (_NTO_VERSION < 630) |
| void * |
| ph_GL_GetProcAddress(_THIS, const char *proc) |
| { |
| return NULL; |
| } |
| #else |
| void * |
| ph_GL_GetProcAddress(_THIS, const char *proc) |
| { |
| void *function; |
| |
| if (this->gl_config.dll_handle == NULL) { |
| ph_GL_LoadLibrary(this, DEFAULT_OPENGL); |
| if (this->gl_config.dll_handle == NULL) { |
| return NULL; |
| } |
| } |
| |
| function = qnxgl_get_func(proc, oglctx, 0); |
| if (function == NULL) { |
| function = dlsym(this->gl_config.dll_handle, proc); |
| } |
| |
| return function; |
| } |
| #endif /* 6.3.0 */ |
| |
| #if (_NTO_VERSION < 630) |
| int |
| ph_GL_MakeCurrent(_THIS) |
| { |
| PgSetRegion(PtWidgetRid(window)); |
| |
| if (oglctx != NULL) { |
| PhDCSetCurrent(oglctx); |
| } |
| |
| return 0; |
| } |
| #else |
| int |
| ph_GL_MakeCurrent(_THIS) |
| { |
| PgSetRegion(PtWidgetRid(window)); |
| |
| if (oglctx != NULL) { |
| if (qnxgl_set_current(oglctx) == -1) { |
| return -1; |
| } |
| } |
| |
| return 0; |
| } |
| #endif /* 6.3.0 */ |
| |
| #if (_NTO_VERSION < 630) |
| |
| /* This code is actual for the Photon3D Runtime which was available prior to 6.3 only */ |
| |
| int |
| ph_SetupOpenGLContext(_THIS, int width, int height, int bpp, Uint32 flags) |
| { |
| PhDim_t dim; |
| uint64_t OGLAttrib[PH_OGL_MAX_ATTRIBS]; |
| int exposepost = 0; |
| int OGLargc; |
| |
| dim.w = width; |
| dim.h = height; |
| |
| if ((oglctx != NULL) && (oglflags == flags) && (oglbpp == bpp)) { |
| PdOpenGLContextResize(oglctx, &dim); |
| PhDCSetCurrent(oglctx); |
| return 0; |
| } else { |
| if (oglctx != NULL) { |
| PhDCSetCurrent(NULL); |
| PhDCRelease(oglctx); |
| oglctx = NULL; |
| exposepost = 1; |
| } |
| } |
| |
| OGLargc = 0; |
| if (this->gl_config.depth_size) { |
| OGLAttrib[OGLargc++] = PHOGL_ATTRIB_DEPTH_BITS; |
| OGLAttrib[OGLargc++] = this->gl_config.depth_size; |
| } |
| if (this->gl_config.stencil_size) { |
| OGLAttrib[OGLargc++] = PHOGL_ATTRIB_STENCIL_BITS; |
| OGLAttrib[OGLargc++] = this->gl_config.stencil_size; |
| } |
| OGLAttrib[OGLargc++] = PHOGL_ATTRIB_FORCE_SW; |
| if (flags & SDL_FULLSCREEN) { |
| OGLAttrib[OGLargc++] = PHOGL_ATTRIB_FULLSCREEN; |
| OGLAttrib[OGLargc++] = PHOGL_ATTRIB_DIRECT; |
| OGLAttrib[OGLargc++] = PHOGL_ATTRIB_FULLSCREEN_BEST; |
| OGLAttrib[OGLargc++] = PHOGL_ATTRIB_FULLSCREEN_CENTER; |
| } |
| OGLAttrib[OGLargc++] = PHOGL_ATTRIB_NONE; |
| |
| if (this->gl_config.double_buffer) { |
| oglctx = PdCreateOpenGLContext(2, &dim, 0, OGLAttrib); |
| } else { |
| oglctx = PdCreateOpenGLContext(1, &dim, 0, OGLAttrib); |
| } |
| |
| if (oglctx == NULL) { |
| SDL_SetError |
| ("ph_SetupOpenGLContext(): cannot create OpenGL context !\n"); |
| return -1; |
| } |
| |
| PhDCSetCurrent(oglctx); |
| |
| PtFlush(); |
| |
| oglflags = flags; |
| oglbpp = bpp; |
| |
| if (exposepost != 0) { |
| /* OpenGL context has been recreated, so report about this fact */ |
| SDL_PrivateExpose(); |
| } |
| |
| return 0; |
| } |
| |
| #else /* _NTO_VERSION */ |
| |
| /* This code is actual for the built-in PhGL support, which became available since 6.3 */ |
| |
| int |
| ph_SetupOpenGLContext(_THIS, int width, int height, int bpp, Uint32 flags) |
| { |
| qnxgl_buf_attrib_t qnxgl_attribs[PH_OGL_MAX_ATTRIBS]; |
| qnxgl_buf_attrib_t *qnxgl_attribs_slide; |
| int num_interfaces = 0; |
| int num_buffers = 0; |
| |
| /* Initialize the OpenGL subsystem */ |
| |
| num_interfaces = qnxgl_init(NULL, NULL, 0); |
| |
| if (num_interfaces < 0) { |
| SDL_SetError |
| ("ph_SetupOpenGLContext(): cannot initialize OpenGL subsystem !\n"); |
| return -1; |
| } |
| if (num_interfaces == 0) { |
| SDL_SetError |
| ("ph_SetupOpenGLContext(): there are no available OpenGL renderers was found !\n"); |
| return -1; |
| } |
| |
| /* Driver is linked */ |
| this->gl_config.driver_loaded = 1; |
| |
| /* Initialize the OpenGL context attributes */ |
| qnxgl_attribs_slide = qnxgl_attribs; |
| |
| /* Depth size */ |
| if (this->gl_config.depth_size) { |
| fprintf(stderr, "setted depth size %d\n", this->gl_config.depth_size); |
| qnxgl_attribs_slide = |
| qnxgl_attrib_set_depth(qnxgl_attribs_slide, |
| this->gl_config.depth_size); |
| } |
| |
| /* Stencil size */ |
| if (this->gl_config.stencil_size) { |
| qnxgl_attribs_slide = |
| qnxgl_attrib_set_stencil(qnxgl_attribs_slide, |
| this->gl_config.stencil_size); |
| } |
| |
| /* The sum of the accum bits of each channel */ |
| if ((this->gl_config.accum_red_size != 0) |
| && (this->gl_config.accum_blue_size != 0) |
| && (this->gl_config.accum_green_size != 0)) { |
| qnxgl_attribs_slide = qnxgl_attrib_set_accum(qnxgl_attribs_slide, |
| this->gl_config. |
| accum_red_size + |
| this->gl_config. |
| accum_blue_size + |
| this->gl_config. |
| accum_green_size + |
| this->gl_config. |
| accum_alpha_size); |
| } |
| |
| /* Stereo mode */ |
| if (this->gl_config.stereo) { |
| qnxgl_attribs_slide = qnxgl_attrib_set_stereo(qnxgl_attribs_slide); |
| } |
| |
| /* Fullscreen mode */ |
| if ((flags & SDL_FULLSCREEN) == SDL_FULLSCREEN) { |
| qnxgl_attribs_slide = |
| qnxgl_attrib_set_hint_fullscreen(qnxgl_attribs_slide); |
| } |
| |
| /* Double buffering mode */ |
| if (this->gl_config.double_buffer) { |
| num_buffers = 2; |
| } else { |
| num_buffers = 1; |
| } |
| |
| /* Loading the function pointers so we can use the extensions */ |
| GLPH_LOAD_FUNCS_GC(oglctx); |
| |
| /* Set the buffers region to be that of our window's region */ |
| qnxgl_attribs_slide = |
| glph_attrib_set_region(qnxgl_attribs_slide, PtWidgetRid(window)); |
| |
| /* End of the attributes array */ |
| qnxgl_attribs_slide = qnxgl_attrib_set_end(qnxgl_attribs_slide); |
| |
| /* Create the buffers with the specified color model */ |
| fprintf(stderr, "ARGB: %d, %d, %d, %d\n", this->gl_config.alpha_size, |
| this->gl_config.red_size, this->gl_config.green_size, |
| this->gl_config.blue_size); |
| oglbuffers = qnxgl_buffers_create(QNXGL_FORMAT_BEST_RGB, |
| /* __QNXGL_BUILD_FORMAT(0, __QNXGL_COLOR_MODEL_RGB, this->gl_config.alpha_size, |
| this->gl_config.red_size, this->gl_config.green_size, this->gl_config.blue_size), */ |
| num_buffers, width, height, |
| qnxgl_attribs, -1); |
| |
| |
| if (oglbuffers == NULL) { |
| SDL_SetError |
| ("ph_SetupOpenGLContext(): failed to create OpenGL buffers !\n"); |
| qnxgl_finish(); |
| return -1; |
| } |
| |
| /* Create a QNXGL context for the previously created buffer */ |
| oglctx = qnxgl_context_create(oglbuffers, NULL); |
| |
| if (oglctx == NULL) { |
| SDL_SetError |
| ("ph_SetupOpenGLContext(): failed to create OpenGL context !\n"); |
| qnxgl_buffers_destroy(oglbuffers); |
| qnxgl_finish(); |
| return -1; |
| } |
| |
| /* Attempt to make the context current so we can use OpenGL commands */ |
| if (qnxgl_set_current(oglctx) == -1) { |
| SDL_SetError |
| ("ph_SetupOpenGLContext(): failed to make the OpenGL context current !\n"); |
| qnxgl_context_destroy(oglctx); |
| qnxgl_buffers_destroy(oglbuffers); |
| qnxgl_finish(); |
| return -1; |
| } |
| |
| PtFlush(); |
| |
| oglflags = flags; |
| oglbpp = bpp; |
| |
| return 0; |
| } |
| |
| #endif /* _NTO_VERSION */ |
| |
| #endif /* SDL_VIDEO_OPENGL */ |
| /* vi: set ts=4 sw=4 expandtab: */ |
