diff options
Diffstat (limited to 'distrib/sdl-1.2.12/src/video/cybergfx/SDL_cgxgl.c')
| -rw-r--r-- | distrib/sdl-1.2.12/src/video/cybergfx/SDL_cgxgl.c | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/distrib/sdl-1.2.12/src/video/cybergfx/SDL_cgxgl.c b/distrib/sdl-1.2.12/src/video/cybergfx/SDL_cgxgl.c new file mode 100644 index 0000000..e19614b --- /dev/null +++ b/distrib/sdl-1.2.12/src/video/cybergfx/SDL_cgxgl.c @@ -0,0 +1,212 @@ +/* + 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" + +/* StormMesa implementation of SDL OpenGL support */ + +#include "SDL_cgxgl_c.h" +#include "SDL_cgxvideo.h" + +#if SDL_VIDEO_OPENGL +AmigaMesaContext glcont=NULL; +#endif + +/* Init OpenGL */ +int CGX_GL_Init(_THIS) +{ +#if SDL_VIDEO_OPENGL + int i = 0; + struct TagItem attributes [ 14 ]; /* 14 should be more than enough :) */ + struct Window *win = (struct Window *)SDL_Window; + + // default config. Always used... + attributes[i].ti_Tag = AMA_Window; attributes[i++].ti_Data = (unsigned long)win; + attributes[i].ti_Tag = AMA_Left; attributes[i++].ti_Data = 0; + attributes[i].ti_Tag = AMA_Bottom; attributes[i++].ti_Data = 0; + attributes[i].ti_Tag = AMA_Width; attributes[i++].ti_Data = win->Width-win->BorderLeft-win->BorderRight; + attributes[i].ti_Tag = AMA_Height; attributes[i++].ti_Data = win->Height-win->BorderBottom-win->BorderTop; + attributes[i].ti_Tag = AMA_DirectRender; attributes[i++].ti_Data = GL_TRUE; + + // double buffer ? + attributes[i].ti_Tag = AMA_DoubleBuf; + if ( this->gl_config.double_buffer ) { + attributes[i++].ti_Data = GL_TRUE; + } + else { + attributes[i++].ti_Data = GL_FALSE; + } + // RGB(A) Mode ? + attributes[i].ti_Tag = AMA_RGBMode; + if ( this->gl_config.red_size != 0 && + this->gl_config.blue_size != 0 && + this->gl_config.green_size != 0 ) { + attributes[i++].ti_Data = GL_TRUE; + } + else { + attributes[i++].ti_Data = GL_FALSE; + } + // no depth buffer ? + if ( this->gl_config.depth_size == 0 ) { + attributes[i].ti_Tag = AMA_NoDepth; + attributes[i++].ti_Data = GL_TRUE; + } + // no stencil buffer ? + if ( this->gl_config.stencil_size == 0 ) { + attributes[i].ti_Tag = AMA_NoStencil; + attributes[i++].ti_Data = GL_TRUE; + } + // no accum buffer ? + if ( this->gl_config.accum_red_size != 0 && + this->gl_config.accum_blue_size != 0 && + this->gl_config.accum_green_size != 0 ) { + attributes[i].ti_Tag = AMA_NoAccum; + attributes[i++].ti_Data = GL_TRUE; + } + // done... + attributes[i].ti_Tag = TAG_DONE; + + glcont = AmigaMesaCreateContext(attributes); + if ( glcont == NULL ) { + SDL_SetError("Couldn't create OpenGL context"); + return(-1); + } + this->gl_data->gl_active = 1; + this->gl_config.driver_loaded = 1; + + return(0); +#else + SDL_SetError("OpenGL support not configured"); + return(-1); +#endif +} + +/* Quit OpenGL */ +void CGX_GL_Quit(_THIS) +{ +#if SDL_VIDEO_OPENGL + if ( glcont != NULL ) { + AmigaMesaDestroyContext(glcont); + glcont = NULL; + this->gl_data->gl_active = 0; + this->gl_config.driver_loaded = 0; + } +#endif +} + +/* Attach context to another window */ +int CGX_GL_Update(_THIS) +{ +#if SDL_VIDEO_OPENGL + struct TagItem tags[2]; + struct Window *win = (struct Window*)SDL_Window; + if(glcont == NULL) { + return -1; //should never happen + } + tags[0].ti_Tag = AMA_Window; + tags[0].ti_Data = (unsigned long)win; + tags[1].ti_Tag = TAG_DONE; + AmigaMesaSetRast(glcont, tags); + + return 0; +#else + SDL_SetError("OpenGL support not configured"); + return -1; +#endif +} + +#if SDL_VIDEO_OPENGL + +/* Make the current context active */ +int CGX_GL_MakeCurrent(_THIS) +{ + if(glcont == NULL) + return -1; + + AmigaMesaMakeCurrent(glcont, glcont->buffer); + return 0; +} + +void CGX_GL_SwapBuffers(_THIS) +{ + AmigaMesaSwapBuffers(glcont); +} + +int CGX_GL_GetAttribute(_THIS, SDL_GLattr attrib, int* value) { + GLenum mesa_attrib; + + switch(attrib) { + case SDL_GL_RED_SIZE: + mesa_attrib = GL_RED_BITS; + break; + case SDL_GL_GREEN_SIZE: + mesa_attrib = GL_GREEN_BITS; + break; + case SDL_GL_BLUE_SIZE: + mesa_attrib = GL_BLUE_BITS; + break; + case SDL_GL_ALPHA_SIZE: + mesa_attrib = GL_ALPHA_BITS; + break; + case SDL_GL_DOUBLEBUFFER: + mesa_attrib = GL_DOUBLEBUFFER; + break; + case SDL_GL_DEPTH_SIZE: + mesa_attrib = GL_DEPTH_BITS; + break; + case SDL_GL_STENCIL_SIZE: + mesa_attrib = GL_STENCIL_BITS; + break; + case SDL_GL_ACCUM_RED_SIZE: + mesa_attrib = GL_ACCUM_RED_BITS; + break; + case SDL_GL_ACCUM_GREEN_SIZE: + mesa_attrib = GL_ACCUM_GREEN_BITS; + break; + case SDL_GL_ACCUM_BLUE_SIZE: + mesa_attrib = GL_ACCUM_BLUE_BITS; + break; + case SDL_GL_ACCUM_ALPHA_SIZE: + mesa_attrib = GL_ACCUM_ALPHA_BITS; + break; + default : + return -1; + } + + AmigaMesaGetConfig(glcont->visual, mesa_attrib, value); + return 0; +} + +void *CGX_GL_GetProcAddress(_THIS, const char *proc) { + void *func = NULL; + func = AmiGetGLProc(proc); + return func; +} + +int CGX_GL_LoadLibrary(_THIS, const char *path) { + /* Library is always open */ + this->gl_config.driver_loaded = 1; + + return 0; +} + +#endif /* SDL_VIDEO_OPENGL */ + |