From 11f4360f2e915f236558da22efe5bdabd81446f3 Mon Sep 17 00:00:00 2001 From: Chia-I Wu Date: Wed, 20 Jan 2010 15:52:50 +0800 Subject: [PATCH] st/egl_g3d: Add support for probe to native displays. The functions can be used to check if a display is supported without creating a struct native_display. It uses a probe object that can be shared across drivers. --- .../state_trackers/egl_g3d/common/native.h | 37 +++++++++ .../state_trackers/egl_g3d/kms/native_kms.c | 12 +++ .../state_trackers/egl_g3d/x11/native_x11.c | 76 +++++++++++++++++++ .../state_trackers/egl_g3d/x11/x11_screen.c | 25 ++++-- .../state_trackers/egl_g3d/x11/x11_screen.h | 3 + 5 files changed, 146 insertions(+), 7 deletions(-) diff --git a/src/gallium/state_trackers/egl_g3d/common/native.h b/src/gallium/state_trackers/egl_g3d/common/native.h index f374f2e4a68..72a9cec7ef1 100644 --- a/src/gallium/state_trackers/egl_g3d/common/native.h +++ b/src/gallium/state_trackers/egl_g3d/common/native.h @@ -47,6 +47,27 @@ enum native_attachment { NUM_NATIVE_ATTACHMENTS }; +/** + * Enumerations for probe results. + */ +enum native_probe_result { + NATIVE_PROBE_UNKNOWN, + NATIVE_PROBE_FALLBACK, + NATIVE_PROBE_SUPPORTED, + NATIVE_PROBE_EXACT, +}; + +/** + * A probe object for display probe. + */ +struct native_probe { + int magic; + EGLNativeDisplayType display; + void *data; + + void (*destroy)(struct native_probe *nprobe); +}; + struct native_surface { void (*destroy)(struct native_surface *nsurf); @@ -231,6 +252,22 @@ native_attachment_mask_test(uint mask, enum native_attachment att) return !!(mask & (1 << att)); } +/** + * Return a probe object for the given display. + * + * Note that the returned object may be cached and used by different native + * display modules. It allows fast probing when multiple modules probe the + * same display. + */ +struct native_probe * +native_create_probe(EGLNativeDisplayType dpy); + +/** + * Probe the probe object. + */ +enum native_probe_result +native_get_probe_result(struct native_probe *nprobe); + const char * native_get_name(void); diff --git a/src/gallium/state_trackers/egl_g3d/kms/native_kms.c b/src/gallium/state_trackers/egl_g3d/kms/native_kms.c index dc664366305..d5baf2c2f05 100644 --- a/src/gallium/state_trackers/egl_g3d/kms/native_kms.c +++ b/src/gallium/state_trackers/egl_g3d/kms/native_kms.c @@ -820,6 +820,18 @@ kms_create_display(EGLNativeDisplayType dpy, struct drm_api *api) return &kdpy->base; } +struct native_probe * +native_create_probe(EGLNativeDisplayType dpy) +{ + return NULL; +} + +enum native_probe_result +native_get_probe_result(struct native_probe *nprobe) +{ + return NATIVE_PROBE_UNKNOWN; +} + /* the api is destroyed with the native display */ static struct drm_api *drm_api; diff --git a/src/gallium/state_trackers/egl_g3d/x11/native_x11.c b/src/gallium/state_trackers/egl_g3d/x11/native_x11.c index 583ce3d3293..695ab88010b 100644 --- a/src/gallium/state_trackers/egl_g3d/x11/native_x11.c +++ b/src/gallium/state_trackers/egl_g3d/x11/native_x11.c @@ -24,13 +24,89 @@ #include #include "util/u_debug.h" +#include "util/u_memory.h" #include "state_tracker/drm_api.h" #include "egllog.h" #include "native_x11.h" +#include "x11_screen.h" + +#define X11_PROBE_MAGIC 0x11980BE /* "X11PROBE" */ static struct drm_api *api; +static void +x11_probe_destroy(struct native_probe *nprobe) +{ + if (nprobe->data) + free(nprobe->data); + free(nprobe); +} + +struct native_probe * +native_create_probe(EGLNativeDisplayType dpy) +{ + struct native_probe *nprobe; + struct x11_screen *xscr; + int scr; + const char *driver_name = NULL; + Display *xdpy; + + nprobe = CALLOC_STRUCT(native_probe); + if (!nprobe) + return NULL; + + xdpy = dpy; + if (!xdpy) { + xdpy = XOpenDisplay(NULL); + if (!xdpy) { + free(nprobe); + return NULL; + } + } + + scr = DefaultScreen(xdpy); + xscr = x11_screen_create(xdpy, scr); + if (xscr) { + if (x11_screen_support(xscr, X11_SCREEN_EXTENSION_DRI2)) { + driver_name = x11_screen_probe_dri2(xscr); + nprobe->data = strdup(driver_name); + } + + x11_screen_destroy(xscr); + } + + if (xdpy != dpy) + XCloseDisplay(xdpy); + + nprobe->magic = X11_PROBE_MAGIC; + nprobe->display = dpy; + + nprobe->destroy = x11_probe_destroy; + + return nprobe; +} + +enum native_probe_result +native_get_probe_result(struct native_probe *nprobe) +{ + if (!nprobe || nprobe->magic != X11_PROBE_MAGIC) + return NATIVE_PROBE_UNKNOWN; + + if (!api) + api = drm_api_create(); + + /* this is a software driver */ + if (!api) + return NATIVE_PROBE_SUPPORTED; + + /* the display does not support DRI2 or the driver mismatches */ + if (!nprobe->data || strcmp(api->name, (const char *) nprobe->data) != 0) + return NATIVE_PROBE_FALLBACK; + + return NATIVE_PROBE_EXACT; +} + const char * native_get_name(void) { diff --git a/src/gallium/state_trackers/egl_g3d/x11/x11_screen.c b/src/gallium/state_trackers/egl_g3d/x11/x11_screen.c index 4d68a88d2e6..fef7878ab9a 100644 --- a/src/gallium/state_trackers/egl_g3d/x11/x11_screen.c +++ b/src/gallium/state_trackers/egl_g3d/x11/x11_screen.c @@ -249,6 +249,22 @@ x11_screen_is_driver_equal(struct x11_screen *xscr, const char *driver) return (strcmp(xscr->dri_driver, driver) == 0); } +/** + * Probe the screen for the DRI2 driver name. + */ +const char * +x11_screen_probe_dri2(struct x11_screen *xscr) +{ + /* get the driver name and the device name */ + if (!xscr->dri_driver) { + if (!DRI2Connect(xscr->dpy, RootWindow(xscr->dpy, xscr->number), + &xscr->dri_driver, &xscr->dri_device)) + xscr->dri_driver = xscr->dri_device = NULL; + } + + return xscr->dri_driver; +} + /** * Enable DRI2 and returns the file descriptor of the DRM device. The file * descriptor will be closed automatically when the screen is destoryed. @@ -261,13 +277,8 @@ x11_screen_enable_dri2(struct x11_screen *xscr, const char *driver) drm_magic_t magic; /* get the driver name and the device name first */ - if (!xscr->dri_driver) { - if (!DRI2Connect(xscr->dpy, RootWindow(xscr->dpy, xscr->number), - &xscr->dri_driver, &xscr->dri_device)) { - xscr->dri_driver = xscr->dri_device = NULL; - return -1; - } - } + if (!x11_screen_probe_dri2(xscr)) + return -1; if (!x11_screen_is_driver_equal(xscr, driver)) { _eglLog(_EGL_WARNING, "Driver mismatch: %s != %s", diff --git a/src/gallium/state_trackers/egl_g3d/x11/x11_screen.h b/src/gallium/state_trackers/egl_g3d/x11/x11_screen.h index bf482189053..5432858ac3e 100644 --- a/src/gallium/state_trackers/egl_g3d/x11/x11_screen.h +++ b/src/gallium/state_trackers/egl_g3d/x11/x11_screen.h @@ -70,6 +70,9 @@ x11_screen_get_glx_configs(struct x11_screen *xscr); const __GLcontextModes * x11_screen_get_glx_visuals(struct x11_screen *xscr); +const char * +x11_screen_probe_dri2(struct x11_screen *xscr); + int x11_screen_enable_dri2(struct x11_screen *xscr, const char *driver); -- 2.30.2