diff options
Diffstat (limited to 'src/gallium/winsys/egl_xlib/egl_xlib.c')
| -rw-r--r-- | src/gallium/winsys/egl_xlib/egl_xlib.c | 655 |
1 files changed, 655 insertions, 0 deletions
diff --git a/src/gallium/winsys/egl_xlib/egl_xlib.c b/src/gallium/winsys/egl_xlib/egl_xlib.c new file mode 100644 index 00000000000..477d766925c --- /dev/null +++ b/src/gallium/winsys/egl_xlib/egl_xlib.c @@ -0,0 +1,655 @@ +/************************************************************************** + * + * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +/** + * EGL / softpipe / xlib winsys module + * + * Authors: Brian Paul + */ + + +#include <dlfcn.h> +#include <X11/Xutil.h> + +#include "pipe/p_compiler.h" +#include "pipe/p_format.h" +#include "pipe/p_state.h" +#include "pipe/p_winsys.h" +#include "util/u_memory.h" +#include "softpipe/sp_winsys.h" + +#include "eglconfig.h" +#include "eglconfigutil.h" +#include "eglcontext.h" +#include "egldisplay.h" +#include "egldriver.h" +#include "eglglobals.h" +#include "egllog.h" +#include "eglsurface.h" + +#include "state_tracker/st_public.h" + +#include "sw_winsys.h" + + +/** subclass of _EGLDriver */ +struct xlib_egl_driver +{ + _EGLDriver Base; /**< base class */ + + struct pipe_winsys *winsys; + struct pipe_screen *screen; +}; + + +/** subclass of _EGLContext */ +struct xlib_egl_context +{ + _EGLContext Base; /**< base class */ + + struct pipe_context *pipe; /**< Gallium driver context */ + struct st_context *Context; /**< Mesa/gallium state tracker context */ +}; + + +/** subclass of _EGLSurface */ +struct xlib_egl_surface +{ + _EGLSurface Base; /**< base class */ + + Display *Dpy; /**< The X Display of the window */ + Window Win; /**< The user-created window ID */ + GC Gc; + XVisualInfo VisInfo; + + struct pipe_winsys *winsys; + + struct st_framebuffer *Framebuffer; +}; + + +/** cast wrapper */ +static INLINE struct xlib_egl_driver * +xlib_egl_driver(_EGLDriver *drv) +{ + return (struct xlib_egl_driver *) drv; +} + + +static struct xlib_egl_surface * +lookup_surface(EGLSurface surf) +{ + _EGLSurface *surface = _eglLookupSurface(surf); + return (struct xlib_egl_surface *) surface; +} + + +static struct xlib_egl_context * +lookup_context(EGLContext surf) +{ + _EGLContext *context = _eglLookupContext(surf); + return (struct xlib_egl_context *) context; +} + + +static unsigned int +bitcount(unsigned int n) +{ + unsigned int bits; + for (bits = 0; n > 0; n = n >> 1) { + bits += (n & 1); + } + return bits; +} + + +/** + * Create the EGLConfigs. (one per X visual) + */ +static void +create_configs(_EGLDriver *drv, EGLDisplay dpy) +{ + static const EGLint all_apis = (EGL_OPENGL_ES_BIT | + EGL_OPENGL_ES2_BIT | + EGL_OPENVG_BIT | + EGL_OPENGL_BIT); + _EGLDisplay *disp = _eglLookupDisplay(dpy); + XVisualInfo *visInfo, visTemplate; + int num_visuals, i; + + /* get list of all X visuals, create an EGL config for each */ + visTemplate.screen = DefaultScreen(disp->Xdpy); + visInfo = XGetVisualInfo(disp->Xdpy, VisualScreenMask, + &visTemplate, &num_visuals); + if (!visInfo) { + printf("egl_xlib.c: couldn't get any X visuals\n"); + abort(); + } + + for (i = 0; i < num_visuals; i++) { + _EGLConfig *config = calloc(1, sizeof(_EGLConfig)); + int id = i + 1; + int rbits = bitcount(visInfo[i].red_mask); + int gbits = bitcount(visInfo[i].green_mask); + int bbits = bitcount(visInfo[i].blue_mask); + int abits = bbits == 8 ? 8 : 0; + int zbits = 24; + int sbits = 8; + int visid = visInfo[i].visualid; +#if defined(__cplusplus) || defined(c_plusplus) + int vistype = visInfo[i].c_class; +#else + int vistype = visInfo[i].class; +#endif + + _eglInitConfig(config, id); + SET_CONFIG_ATTRIB(config, EGL_BUFFER_SIZE, rbits + gbits + bbits + abits); + SET_CONFIG_ATTRIB(config, EGL_RED_SIZE, rbits); + SET_CONFIG_ATTRIB(config, EGL_GREEN_SIZE, gbits); + SET_CONFIG_ATTRIB(config, EGL_BLUE_SIZE, bbits); + SET_CONFIG_ATTRIB(config, EGL_ALPHA_SIZE, abits); + SET_CONFIG_ATTRIB(config, EGL_DEPTH_SIZE, zbits); + SET_CONFIG_ATTRIB(config, EGL_STENCIL_SIZE, sbits); + SET_CONFIG_ATTRIB(config, EGL_NATIVE_VISUAL_ID, visid); + SET_CONFIG_ATTRIB(config, EGL_NATIVE_VISUAL_TYPE, vistype); + SET_CONFIG_ATTRIB(config, EGL_NATIVE_RENDERABLE, EGL_FALSE); + SET_CONFIG_ATTRIB(config, EGL_CONFORMANT, all_apis); + SET_CONFIG_ATTRIB(config, EGL_RENDERABLE_TYPE, all_apis); + SET_CONFIG_ATTRIB(config, EGL_SURFACE_TYPE, EGL_WINDOW_BIT); + + _eglAddConfig(disp, config); + } +} + + +/** + * Called via eglInitialize(), drv->API.Initialize(). + */ +static EGLBoolean +xlib_eglInitialize(_EGLDriver *drv, EGLDisplay dpy, + EGLint *minor, EGLint *major) +{ + create_configs(drv, dpy); + + drv->Initialized = EGL_TRUE; + + /* we're supporting EGL 1.4 */ + *minor = 1; + *major = 4; + + return EGL_TRUE; +} + + +/** + * Called via eglTerminate(), drv->API.Terminate(). + */ +static EGLBoolean +xlib_eglTerminate(_EGLDriver *drv, EGLDisplay dpy) +{ + return EGL_TRUE; +} + + +static _EGLProc +xlib_eglGetProcAddress(const char *procname) +{ + return (_EGLProc) st_get_proc_address(procname); +} + + +static void +get_drawable_visual_info(Display *dpy, Drawable d, XVisualInfo *visInfo) +{ + XWindowAttributes attr; + XVisualInfo visTemp, *vis; + int num_visuals; + + XGetWindowAttributes(dpy, d, &attr); + + visTemp.screen = DefaultScreen(dpy); + visTemp.visualid = attr.visual->visualid; + vis = XGetVisualInfo(dpy, + (VisualScreenMask | VisualIDMask), + &visTemp, &num_visuals); + if (vis) + *visInfo = *vis; + + XFree(vis); +} + + + +/** Get size of given window */ +static Status +get_drawable_size(Display *dpy, Drawable d, uint *width, uint *height) +{ + Window root; + Status stat; + int xpos, ypos; + unsigned int w, h, bw, depth; + stat = XGetGeometry(dpy, d, &root, &xpos, &ypos, &w, &h, &bw, &depth); + *width = w; + *height = h; + return stat; +} + + +static void +check_and_update_buffer_size(struct xlib_egl_surface *surface) +{ + uint width, height; + get_drawable_size(surface->Dpy, surface->Win, &width, &height); + st_resize_framebuffer(surface->Framebuffer, width, height); + surface->Base.Width = width; + surface->Base.Height = height; +} + + + +static void +display_surface(struct pipe_winsys *pws, + struct pipe_surface *psurf, + struct xlib_egl_surface *xsurf) +{ + XImage *ximage; + void *data; + + ximage = XCreateImage(xsurf->Dpy, + xsurf->VisInfo.visual, + xsurf->VisInfo.depth, + ZPixmap, 0, /* format, offset */ + NULL, /* data */ + 0, 0, /* size */ + 32, /* bitmap_pad */ + 0); /* bytes_per_line */ + + + assert(ximage->format); + assert(ximage->bitmap_unit); + + data = pws->buffer_map(pws, psurf->buffer, 0); + + /* update XImage's fields */ + ximage->data = data; + ximage->width = psurf->width; + ximage->height = psurf->height; + ximage->bytes_per_line = psurf->stride; + + XPutImage(xsurf->Dpy, xsurf->Win, xsurf->Gc, + ximage, 0, 0, 0, 0, psurf->width, psurf->height); + + XSync(xsurf->Dpy, 0); + + ximage->data = NULL; + XDestroyImage(ximage); + + pws->buffer_unmap(pws, psurf->buffer); +} + + + +/** Display gallium surface in X window */ +static void +flush_frontbuffer(struct pipe_winsys *pws, + struct pipe_surface *psurf, + void *context_private) +{ + struct xlib_egl_surface *xsurf = (struct xlib_egl_surface *) context_private; + display_surface(pws, psurf, xsurf); +} + + + +/** + * Called via eglCreateContext(), drv->API.CreateContext(). + */ +static EGLContext +xlib_eglCreateContext(_EGLDriver *drv, EGLDisplay dpy, EGLConfig config, + EGLContext share_list, const EGLint *attrib_list) +{ + struct xlib_egl_driver *xdrv = xlib_egl_driver(drv); + _EGLConfig *conf = _eglLookupConfig(drv, dpy, config); + struct xlib_egl_context *ctx; + struct st_context *share_ctx = NULL; /* XXX fix */ + __GLcontextModes visual; + + ctx = CALLOC_STRUCT(xlib_egl_context); + if (!ctx) + return EGL_NO_CONTEXT; + + /* let EGL lib init the common stuff */ + if (!_eglInitContext(drv, dpy, &ctx->Base, config, attrib_list)) { + free(ctx); + return EGL_NO_CONTEXT; + } + + /* API-dependent context creation */ + switch (ctx->Base.ClientAPI) { + case EGL_OPENVG_API: + case EGL_OPENGL_ES_API: + _eglLog(_EGL_DEBUG, "Create Context for ES version %d\n", + ctx->Base.ClientVersion); + /* fall-through */ + case EGL_OPENGL_API: + /* create a softpipe context */ + ctx->pipe = softpipe_create(xdrv->screen, xdrv->winsys, NULL); + /* Now do xlib / state tracker inits here */ + _eglConfigToContextModesRec(conf, &visual); + ctx->Context = st_create_context(ctx->pipe, &visual, share_ctx); + break; + default: + _eglError(EGL_BAD_MATCH, "eglCreateContext(unsupported API)"); + free(ctx); + return EGL_NO_CONTEXT; + } + + _eglSaveContext(&ctx->Base); + + return _eglGetContextHandle(&ctx->Base); +} + + +static EGLBoolean +xlib_eglDestroyContext(_EGLDriver *drv, EGLDisplay dpy, EGLContext ctx) +{ + struct xlib_egl_context *context = lookup_context(ctx); + if (context) { + if (context->Base.IsBound) { + context->Base.DeletePending = EGL_TRUE; + } + else { + /* API-dependent clean-up */ + switch (context->Base.ClientAPI) { + case EGL_OPENGL_ES_API: + /* fall-through */ + case EGL_OPENGL_API: + st_destroy_context(context->Context); + break; + default: + assert(0); + } + free(context); + } + return EGL_TRUE; + } + else { + _eglError(EGL_BAD_CONTEXT, "eglDestroyContext"); + return EGL_TRUE; + } +} + + +/** + * Called via eglMakeCurrent(), drv->API.MakeCurrent(). + */ +static EGLBoolean +xlib_eglMakeCurrent(_EGLDriver *drv, EGLDisplay dpy, + EGLSurface draw, EGLSurface read, EGLContext ctx) +{ + struct xlib_egl_context *context = lookup_context(ctx); + struct xlib_egl_surface *draw_surf = lookup_surface(draw); + struct xlib_egl_surface *read_surf = lookup_surface(read); + + if (!_eglMakeCurrent(drv, dpy, draw, read, context)) + return EGL_FALSE; + + st_make_current((context ? context->Context : NULL), + (draw_surf ? draw_surf->Framebuffer : NULL), + (read_surf ? read_surf->Framebuffer : NULL)); + + if (draw_surf) + check_and_update_buffer_size(draw_surf); + if (read_surf && read_surf != draw_surf) + check_and_update_buffer_size(draw_surf); + + return EGL_TRUE; +} + + +static enum pipe_format +choose_color_format(const __GLcontextModes *visual) +{ + if (visual->redBits == 8 && + visual->greenBits == 8 && + visual->blueBits == 8 && + visual->alphaBits == 8) { + /* XXX this really also depends on the ordering of R,G,B,A */ + return PIPE_FORMAT_A8R8G8B8_UNORM; + } + else { + assert(0); + return PIPE_FORMAT_NONE; + } +} + + +static enum pipe_format +choose_depth_format(const __GLcontextModes *visual) +{ + if (visual->depthBits > 0) + return PIPE_FORMAT_S8Z24_UNORM; + else + return PIPE_FORMAT_NONE; +} + + +static enum pipe_format +choose_stencil_format(const __GLcontextModes *visual) +{ + if (visual->stencilBits > 0) + return PIPE_FORMAT_S8Z24_UNORM; + else + return PIPE_FORMAT_NONE; +} + + +/** + * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface(). + */ +static EGLSurface +xlib_eglCreateWindowSurface(_EGLDriver *drv, EGLDisplay dpy, EGLConfig config, + NativeWindowType window, const EGLint *attrib_list) +{ + struct xlib_egl_driver *xdrv = xlib_egl_driver(drv); + _EGLDisplay *disp = _eglLookupDisplay(dpy); + _EGLConfig *conf = _eglLookupConfig(drv, dpy, config); + + struct xlib_egl_surface *surf; + __GLcontextModes visual; + uint width, height; + + surf = CALLOC_STRUCT(xlib_egl_surface); + if (!surf) + return EGL_NO_SURFACE; + + /* Let EGL lib init the common stuff */ + if (!_eglInitSurface(drv, dpy, &surf->Base, EGL_WINDOW_BIT, + config, attrib_list)) { + free(surf); + return EGL_NO_SURFACE; + } + + _eglSaveSurface(&surf->Base); + + /* + * Now init the Xlib and gallium stuff + */ + surf->Win = (Window) window; /* The X window ID */ + surf->Dpy = disp->Xdpy; /* The X display */ + surf->Gc = XCreateGC(surf->Dpy, surf->Win, 0, NULL); + + surf->winsys = xdrv->winsys; + + _eglConfigToContextModesRec(conf, &visual); + get_drawable_size(surf->Dpy, surf->Win, &width, &height); + get_drawable_visual_info(surf->Dpy, surf->Win, &surf->VisInfo); + + surf->Base.Width = width; + surf->Base.Height = height; + + /* Create GL statetracker framebuffer */ + surf->Framebuffer = st_create_framebuffer(&visual, + choose_color_format(&visual), + choose_depth_format(&visual), + choose_stencil_format(&visual), + width, height, + (void *) surf); + + st_resize_framebuffer(surf->Framebuffer, width, height); + + return _eglGetSurfaceHandle(&surf->Base); +} + + +static EGLBoolean +xlib_eglDestroySurface(_EGLDriver *drv, EGLDisplay dpy, EGLSurface surface) +{ + struct xlib_egl_surface *surf = lookup_surface(surface); + if (surf) { + _eglHashRemove(_eglGlobal.Surfaces, (EGLuint) surface); + if (surf->Base.IsBound) { + surf->Base.DeletePending = EGL_TRUE; + } + else { + XFreeGC(surf->Dpy, surf->Gc); + st_unreference_framebuffer(surf->Framebuffer); + free(surf); + } + return EGL_TRUE; + } + else { + _eglError(EGL_BAD_SURFACE, "eglDestroySurface"); + return EGL_FALSE; + } +} + + +static EGLBoolean +xlib_eglSwapBuffers(_EGLDriver *drv, EGLDisplay dpy, EGLSurface draw) +{ + /* error checking step: */ + if (!_eglSwapBuffers(drv, dpy, draw)) + return EGL_FALSE; + + { + struct xlib_egl_surface *xsurf = lookup_surface(draw); + struct pipe_winsys *pws = xsurf->winsys; + struct pipe_surface *psurf = + st_get_framebuffer_surface(xsurf->Framebuffer, ST_SURFACE_BACK_LEFT); + + st_notify_swapbuffers(xsurf->Framebuffer); + + display_surface(pws, psurf, xsurf); + + check_and_update_buffer_size(xsurf); + } + + return EGL_TRUE; +} + + +/** + * Determine which API(s) is(are) present by looking for some specific + * global symbols. + */ +static EGLint +find_supported_apis(void) +{ + EGLint mask = 0; + void *handle; + + handle = dlopen(NULL, 0); + + if (dlsym(handle, "st_api_OpenGL_ES1")) + mask |= EGL_OPENGL_ES_BIT; + + if (dlsym(handle, "st_api_OpenGL_ES2")) + mask |= EGL_OPENGL_ES2_BIT; + + if (dlsym(handle, "st_api_OpenGL")) + mask |= EGL_OPENGL_BIT; + + if (dlsym(handle, "st_api_OpenVG")) + mask |= EGL_OPENVG_BIT; + + dlclose(handle); + + return mask; +} + + +/** + * This is the main entrypoint into the driver. + * Called by libEGL to instantiate an _EGLDriver object. + */ +_EGLDriver * +_eglMain(_EGLDisplay *dpy, const char *args) +{ + struct xlib_egl_driver *xdrv; + + _eglLog(_EGL_INFO, "Entering EGL/Xlib _eglMain(%s)", args); + + xdrv = CALLOC_STRUCT(xlib_egl_driver); + if (!xdrv) + return NULL; + + if (!dpy->Xdpy) { + dpy->Xdpy = XOpenDisplay(NULL); + } + + _eglInitDriverFallbacks(&xdrv->Base); + xdrv->Base.API.Initialize = xlib_eglInitialize; + xdrv->Base.API.Terminate = xlib_eglTerminate; + xdrv->Base.API.GetProcAddress = xlib_eglGetProcAddress; + xdrv->Base.API.CreateContext = xlib_eglCreateContext; + xdrv->Base.API.DestroyContext = xlib_eglDestroyContext; + xdrv->Base.API.CreateWindowSurface = xlib_eglCreateWindowSurface; + xdrv->Base.API.DestroySurface = xlib_eglDestroySurface; + xdrv->Base.API.MakeCurrent = xlib_eglMakeCurrent; + xdrv->Base.API.SwapBuffers = xlib_eglSwapBuffers; + + xdrv->Base.ClientAPIsMask = find_supported_apis(); + if (xdrv->Base.ClientAPIsMask == 0x0) { + /* the app isn't directly linked with any EGL-supprted APIs + * (such as libGLESv2.so) so use an EGL utility to see what + * APIs might be loaded dynamically on this system. + */ + xdrv->Base.ClientAPIsMask = _eglFindAPIs(); + } + + xdrv->Base.Name = "Xlib/softpipe"; + + /* create one winsys and use it for all contexts/surfaces */ + xdrv->winsys = create_sw_winsys(); + xdrv->winsys->flush_frontbuffer = flush_frontbuffer; + + xdrv->screen = softpipe_create_screen(xdrv->winsys); + + return &xdrv->Base; +} + |