From ccddbc06d7055c0e30943b56272abec9e87befb1 Mon Sep 17 00:00:00 2001 From: Frank Henigman Date: Tue, 24 Mar 2015 21:26:30 -0400 Subject: [PATCH] egl/dri2: implement platform_null The NULL platform is for off-screen rendering only. Render node support is required. Only consider the render nodes. Do not use normal nodes as they require auth hooks. v3: rebased (Frank Henigman ) Signed-off-by: Haixia Shi --- src/egl/drivers/dri2/Makefile.am | 5 ++ src/egl/drivers/dri2/egl_dri2.c | 7 ++ src/egl/drivers/dri2/egl_dri2.h | 3 + src/egl/drivers/dri2/platform_null.c | 169 +++++++++++++++++++++++++++++++++++ 4 files changed, 184 insertions(+) create mode 100644 src/egl/drivers/dri2/platform_null.c diff --git a/src/egl/drivers/dri2/Makefile.am b/src/egl/drivers/dri2/Makefile.am index f589600..47f0bb8 100644 --- a/src/egl/drivers/dri2/Makefile.am +++ b/src/egl/drivers/dri2/Makefile.am @@ -65,4 +65,9 @@ libegl_dri2_la_SOURCES += platform_drm.c AM_CFLAGS += -DHAVE_DRM_PLATFORM endif +if HAVE_EGL_PLATFORM_NULL +libegl_dri2_la_SOURCES += platform_null.c +AM_CFLAGS += -DHAVE_NULL_PLATFORM +endif + EXTRA_DIST = SConscript diff --git a/src/egl/drivers/dri2/egl_dri2.c b/src/egl/drivers/dri2/egl_dri2.c index d503196..bb0d4ac 100644 --- a/src/egl/drivers/dri2/egl_dri2.c +++ b/src/egl/drivers/dri2/egl_dri2.c @@ -633,6 +633,13 @@ dri2_initialize(_EGLDriver *drv, _EGLDisplay *disp) return EGL_FALSE; switch (disp->Platform) { +#ifdef HAVE_NULL_PLATFORM + case _EGL_PLATFORM_NULL: + if (disp->Options.TestOnly) + return EGL_TRUE; + return dri2_initialize_null(drv, disp); +#endif + #ifdef HAVE_X11_PLATFORM case _EGL_PLATFORM_X11: if (disp->Options.TestOnly) diff --git a/src/egl/drivers/dri2/egl_dri2.h b/src/egl/drivers/dri2/egl_dri2.h index 167b3b1..fb13aec 100644 --- a/src/egl/drivers/dri2/egl_dri2.h +++ b/src/egl/drivers/dri2/egl_dri2.h @@ -334,6 +334,9 @@ dri2_initialize_wayland(_EGLDriver *drv, _EGLDisplay *disp); EGLBoolean dri2_initialize_android(_EGLDriver *drv, _EGLDisplay *disp); +EGLBoolean +dri2_initialize_null(_EGLDriver *drv, _EGLDisplay *disp); + void dri2_flush_drawable_for_swapbuffers(_EGLDisplay *disp, _EGLSurface *draw); diff --git a/src/egl/drivers/dri2/platform_null.c b/src/egl/drivers/dri2/platform_null.c new file mode 100644 index 0000000..55ceab6 --- /dev/null +++ b/src/egl/drivers/dri2/platform_null.c @@ -0,0 +1,169 @@ +/* + * Mesa 3-D graphics library + * + * Copyright (c) 2014 The Chromium OS Authors. + * Copyright © 2011 Intel Corporation + * + * 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, sublicense, + * 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 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 NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS 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. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "egl_dri2.h" +#include "egl_dri2_fallbacks.h" +#include "loader.h" + +static struct dri2_egl_display_vtbl dri2_null_display_vtbl = { + .create_pixmap_surface = dri2_fallback_create_pixmap_surface, + .create_image = dri2_create_image_khr, + .swap_interval = dri2_fallback_swap_interval, + .swap_buffers_with_damage = dri2_fallback_swap_buffers_with_damage, + .swap_buffers_region = dri2_fallback_swap_buffers_region, + .post_sub_buffer = dri2_fallback_post_sub_buffer, + .copy_buffers = dri2_fallback_copy_buffers, + .query_buffer_age = dri2_fallback_query_buffer_age, + .create_wayland_buffer_from_image = dri2_fallback_create_wayland_buffer_from_image, + .get_sync_values = dri2_fallback_get_sync_values, +}; + +static void +null_flush_front_buffer(__DRIdrawable *driDrawable, void *loaderPrivate) +{ +} + +static __DRIbuffer * +null_get_buffers_with_format(__DRIdrawable * driDrawable, + int *width, int *height, + unsigned int *attachments, int count, + int *out_count, void *loaderPrivate) +{ + struct dri2_egl_surface *dri2_surf = loaderPrivate; + struct dri2_egl_display *dri2_dpy = + dri2_egl_display(dri2_surf->base.Resource.Display); + + dri2_surf->buffer_count = 1; + if (width) + *width = dri2_surf->base.Width; + if (height) + *height = dri2_surf->base.Height; + *out_count = dri2_surf->buffer_count;; + return dri2_surf->buffers; +} + +#define DRM_RENDER_DEV_NAME "%s/renderD%d" + +EGLBoolean +dri2_initialize_null(_EGLDriver *drv, _EGLDisplay *disp) +{ + struct dri2_egl_display *dri2_dpy; + const char* err; + int i, render_node; + int driver_loaded = 0; + + loader_set_logger(_eglLog); + + dri2_dpy = calloc(1, sizeof *dri2_dpy); + if (!dri2_dpy) + return _eglError(EGL_BAD_ALLOC, "eglInitialize"); + + disp->DriverData = (void *) dri2_dpy; + + const int limit = 64; + const int base = 128; + for (i = 0; i < limit; ++i) { + char *card_path; + if (asprintf(&card_path, DRM_RENDER_DEV_NAME, DRM_DIR_NAME, base + i) < 0) + continue; + + dri2_dpy->fd = open(card_path, O_RDWR); + free(card_path); + if (dri2_dpy->fd < 0) + continue; + + dri2_dpy->driver_name = loader_get_driver_for_fd(dri2_dpy->fd, 0); + if (dri2_dpy->driver_name) { + if (dri2_load_driver(disp)) { + driver_loaded = 1; + break; + } + free(dri2_dpy->driver_name); + } + close(dri2_dpy->fd); + } + + if (!driver_loaded) { + err = "DRI2: failed to load driver"; + goto cleanup_display; + } + + dri2_dpy->dri2_loader_extension.base.name = __DRI_DRI2_LOADER; + dri2_dpy->dri2_loader_extension.base.version = 3; + dri2_dpy->dri2_loader_extension.getBuffers = NULL; + dri2_dpy->dri2_loader_extension.flushFrontBuffer = + null_flush_front_buffer; + dri2_dpy->dri2_loader_extension.getBuffersWithFormat = + null_get_buffers_with_format; + + dri2_dpy->extensions[0] = &dri2_dpy->dri2_loader_extension.base; + dri2_dpy->extensions[1] = &image_lookup_extension.base; + dri2_dpy->extensions[2] = &use_invalidate.base; + dri2_dpy->extensions[3] = NULL; + + if (!dri2_create_screen(disp)) { + err = "DRI2: failed to create screen"; + goto cleanup_driver; + } + + for (i = 0; dri2_dpy->driver_configs[i]; i++) { + EGLint attr_list[1]; + attr_list[0] = EGL_NONE; + dri2_add_config(disp, dri2_dpy->driver_configs[i], + i + 1, EGL_WINDOW_BIT, attr_list, NULL); + } + + disp->Extensions.KHR_image_base = EGL_TRUE; + + /* we're supporting EGL 1.4 */ + disp->VersionMajor = 1; + disp->VersionMinor = 4; + + /* Fill vtbl last to prevent accidentally calling virtual function during + * initialization. + */ + dri2_dpy->vtbl = &dri2_null_display_vtbl; + + return EGL_TRUE; + +cleanup_driver: + dlclose(dri2_dpy->driver); + free(dri2_dpy->driver_name); + close(dri2_dpy->fd); +cleanup_display: + free(dri2_dpy); + + return _eglError(EGL_NOT_INITIALIZED, err); +} -- 2.2.0.rc0.207.ga3a616c