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Diffstat (limited to 'src/gallium/winsys/egl_xlib/egl_xlib.c')
-rw-r--r--src/gallium/winsys/egl_xlib/egl_xlib.c655
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 0000000000..e9f821d276
--- /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;
+}
+