From 71580edc017f8feb667953df5a6e0792557672e1 Mon Sep 17 00:00:00 2001 From: Chia-I Wu Date: Thu, 3 Jun 2010 19:52:15 +0800 Subject: st/egl: Add fbdev backend. The backend is pure software. It implements EGL_MESA_screen_surface extension, and is kept simple by only exporting the current mode. --- .../state_trackers/egl/fbdev/native_fbdev.c | 470 +++++++++++++++++++++ 1 file changed, 470 insertions(+) create mode 100644 src/gallium/state_trackers/egl/fbdev/native_fbdev.c (limited to 'src/gallium/state_trackers/egl/fbdev') diff --git a/src/gallium/state_trackers/egl/fbdev/native_fbdev.c b/src/gallium/state_trackers/egl/fbdev/native_fbdev.c new file mode 100644 index 0000000000..d70b7c6eb9 --- /dev/null +++ b/src/gallium/state_trackers/egl/fbdev/native_fbdev.c @@ -0,0 +1,470 @@ +/* + * Mesa 3-D graphics library + * Version: 7.9 + * + * Copyright (C) 2010 LunarG Inc. + * + * 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. + * + * Authors: + * Chia-I Wu + */ + +#include +#include +#include +#include +#include + +#include "pipe/p_screen.h" +#include "util/u_memory.h" +#include "util/u_inlines.h" +#include "util/u_pointer.h" + +#include "common/native.h" +#include "common/native_helper.h" +#include "fbdev/fbdev_sw_winsys.h" + +struct fbdev_display { + struct native_display base; + + int fd; + struct native_event_handler *event_handler; + + struct fb_fix_screeninfo finfo; + struct fb_var_screeninfo vinfo; + + struct native_config config; + struct native_connector connector; + struct native_mode mode; + + struct fbdev_surface *current_surface; +}; + +struct fbdev_surface { + struct native_surface base; + + struct fbdev_display *fbdpy; + struct resource_surface *rsurf; + int width, height; + + unsigned int sequence_number; + + boolean is_current; +}; + +static INLINE struct fbdev_display * +fbdev_display(const struct native_display *ndpy) +{ + return (struct fbdev_display *) ndpy; +} + +static INLINE struct fbdev_surface * +fbdev_surface(const struct native_surface *nsurf) +{ + return (struct fbdev_surface *) nsurf; +} + +static boolean +fbdev_surface_validate(struct native_surface *nsurf, uint attachment_mask, + unsigned int *seq_num, struct pipe_resource **textures, + int *width, int *height) +{ + struct fbdev_surface *fbsurf = fbdev_surface(nsurf); + + if (!resource_surface_add_resources(fbsurf->rsurf, attachment_mask)) + return FALSE; + if (textures) + resource_surface_get_resources(fbsurf->rsurf, textures, attachment_mask); + + if (seq_num) + *seq_num = fbsurf->sequence_number; + if (width) + *width = fbsurf->width; + if (height) + *height = fbsurf->height; + + return TRUE; +} + +static boolean +fbdev_surface_flush_frontbuffer(struct native_surface *nsurf) +{ + struct fbdev_surface *fbsurf = fbdev_surface(nsurf); + + if (!fbsurf->is_current) + return TRUE; + + return resource_surface_present(fbsurf->rsurf, + NATIVE_ATTACHMENT_FRONT_LEFT, NULL); +} + +static boolean +fbdev_surface_swap_buffers(struct native_surface *nsurf) +{ + struct fbdev_surface *fbsurf = fbdev_surface(nsurf); + struct fbdev_display *fbdpy = fbsurf->fbdpy; + boolean ret = TRUE; + + if (fbsurf->is_current) { + ret = resource_surface_present(fbsurf->rsurf, + NATIVE_ATTACHMENT_BACK_LEFT, NULL); + } + + resource_surface_swap_buffers(fbsurf->rsurf, + NATIVE_ATTACHMENT_FRONT_LEFT, NATIVE_ATTACHMENT_BACK_LEFT, TRUE); + /* the front/back textures are swapped */ + fbsurf->sequence_number++; + fbdpy->event_handler->invalid_surface(&fbdpy->base, + &fbsurf->base, fbsurf->sequence_number); + + return ret; +} + +static void +fbdev_surface_wait(struct native_surface *nsurf) +{ + /* no-op */ +} + +static void +fbdev_surface_destroy(struct native_surface *nsurf) +{ + struct fbdev_surface *fbsurf = fbdev_surface(nsurf); + + resource_surface_destroy(fbsurf->rsurf); + FREE(fbsurf); +} + +static struct native_surface * +fbdev_display_create_scanout_surface(struct native_display *ndpy, + const struct native_config *nconf, + uint width, uint height) +{ + struct fbdev_display *fbdpy = fbdev_display(ndpy); + struct fbdev_surface *fbsurf; + + fbsurf = CALLOC_STRUCT(fbdev_surface); + if (!fbsurf) + return NULL; + + fbsurf->fbdpy = fbdpy; + fbsurf->width = width; + fbsurf->height = height; + + fbsurf->rsurf = resource_surface_create(fbdpy->base.screen, + nconf->color_format, + PIPE_BIND_RENDER_TARGET | + PIPE_BIND_DISPLAY_TARGET | + PIPE_BIND_SCANOUT); + if (!fbsurf->rsurf) { + FREE(fbsurf); + return NULL; + } + + resource_surface_set_size(fbsurf->rsurf, fbsurf->width, fbsurf->height); + + fbsurf->base.destroy = fbdev_surface_destroy; + fbsurf->base.swap_buffers = fbdev_surface_swap_buffers; + fbsurf->base.flush_frontbuffer = fbdev_surface_flush_frontbuffer; + fbsurf->base.validate = fbdev_surface_validate; + fbsurf->base.wait = fbdev_surface_wait; + + return &fbsurf->base; +} + +static boolean +fbdev_display_program(struct native_display *ndpy, int crtc_idx, + struct native_surface *nsurf, uint x, uint y, + const struct native_connector **nconns, int num_nconns, + const struct native_mode *nmode) +{ + struct fbdev_display *fbdpy = fbdev_display(ndpy); + struct fbdev_surface *fbsurf = fbdev_surface(nsurf); + + if (x || y) + return FALSE; + + if (fbdpy->current_surface) { + if (fbdpy->current_surface == fbsurf) + return TRUE; + fbdpy->current_surface->is_current = FALSE; + } + + if (fbsurf) + fbsurf->is_current = TRUE; + fbdpy->current_surface = fbsurf; + + return TRUE; +} + +static const struct native_mode ** +fbdev_display_get_modes(struct native_display *ndpy, + const struct native_connector *nconn, + int *num_modes) +{ + struct fbdev_display *fbdpy = fbdev_display(ndpy); + const struct native_mode **modes; + + modes = MALLOC(sizeof(*modes)); + if (modes) { + modes[0] = &fbdpy->mode; + if (num_modes) + *num_modes = 1; + } + + return modes; +} + +static const struct native_connector ** +fbdev_display_get_connectors(struct native_display *ndpy, int *num_connectors, + int *num_crtc) +{ + struct fbdev_display *fbdpy = fbdev_display(ndpy); + const struct native_connector **connectors; + + connectors = MALLOC(sizeof(*connectors)); + if (connectors) { + connectors[0] = &fbdpy->connector; + if (num_connectors) + *num_connectors = 1; + } + + return connectors; +} + +static struct native_display_modeset fbdev_display_modeset = { + .get_connectors = fbdev_display_get_connectors, + .get_modes = fbdev_display_get_modes, + .create_scanout_surface = fbdev_display_create_scanout_surface, + .program = fbdev_display_program +}; + +static const struct native_config ** +fbdev_display_get_configs(struct native_display *ndpy, int *num_configs) +{ + struct fbdev_display *fbdpy = fbdev_display(ndpy); + const struct native_config **configs; + + configs = MALLOC(sizeof(*configs)); + if (configs) { + configs[0] = &fbdpy->config; + if (num_configs) + *num_configs = 1; + } + + return configs; +} + +static int +fbdev_display_get_param(struct native_display *ndpy, + enum native_param_type param) +{ + int val; + + switch (param) { + default: + val = 0; + break; + } + + return val; +} + +static void +fbdev_display_destroy(struct native_display *ndpy) +{ + struct fbdev_display *fbdpy = fbdev_display(ndpy); + + fbdpy->base.screen->destroy(fbdpy->base.screen); + close(fbdpy->fd); + FREE(fbdpy); +} + +static boolean +fbdev_display_init_modes(struct native_display *ndpy) +{ + struct fbdev_display *fbdpy = fbdev_display(ndpy); + struct native_mode *nmode = &fbdpy->mode; + + nmode->desc = "Current Mode"; + nmode->width = fbdpy->vinfo.xres; + nmode->height = fbdpy->vinfo.yres; + nmode->refresh_rate = 60 * 1000; /* dummy */ + + return TRUE; +} + +static boolean +fbdev_display_init_connectors(struct native_display *ndpy) +{ + return TRUE; +} + +static enum pipe_format +vinfo_to_format(const struct fb_var_screeninfo *vinfo) +{ + enum pipe_format format = PIPE_FORMAT_NONE; + + switch (vinfo->bits_per_pixel) { + case 32: + if (vinfo->red.length == 8 && + vinfo->green.length == 8 && + vinfo->blue.length == 8) { + format = (vinfo->transp.length == 8) ? + PIPE_FORMAT_B8G8R8A8_UNORM : PIPE_FORMAT_B8G8R8X8_UNORM; + } + break; + case 16: + if (vinfo->red.length == 5 && + vinfo->green.length == 6 && + vinfo->blue.length == 5 && + vinfo->transp.length == 0) + format = PIPE_FORMAT_B5G6R5_UNORM; + break; + default: + break; + } + + return format; +} + +static boolean +fbdev_display_init_configs(struct native_display *ndpy) +{ + struct fbdev_display *fbdpy = fbdev_display(ndpy); + struct native_config *nconf = &fbdpy->config; + + nconf->color_format = vinfo_to_format(&fbdpy->vinfo); + if (nconf->color_format == PIPE_FORMAT_NONE) + return FALSE; + + nconf->buffer_mask = + (1 << NATIVE_ATTACHMENT_FRONT_LEFT) | + (1 << NATIVE_ATTACHMENT_BACK_LEFT); + + nconf->scanout_bit = TRUE; + + return TRUE; +} + +static boolean +fbdev_display_init(struct native_display *ndpy) +{ + struct fbdev_display *fbdpy = fbdev_display(ndpy); + struct sw_winsys *ws; + + if (ioctl(fbdpy->fd, FBIOGET_FSCREENINFO, &fbdpy->finfo)) + return FALSE; + + if (ioctl(fbdpy->fd, FBIOGET_VSCREENINFO, &fbdpy->vinfo)) + return FALSE; + + if (fbdpy->finfo.visual != FB_VISUAL_TRUECOLOR || + fbdpy->finfo.type != FB_TYPE_PACKED_PIXELS) + return FALSE; + + if (!fbdev_display_init_configs(&fbdpy->base) || + !fbdev_display_init_connectors(&fbdpy->base) || + !fbdev_display_init_modes(&fbdpy->base)) + return FALSE; + + ws = fbdev_create_sw_winsys(fbdpy->fd, fbdpy->config.color_format); + if (ws) + fbdpy->base.screen = native_create_sw_screen(ws); + + if (fbdpy->base.screen) { + if (!fbdpy->base.screen->is_format_supported(fbdpy->base.screen, + fbdpy->config.color_format, PIPE_TEXTURE_2D, 0, + PIPE_BIND_RENDER_TARGET, 0)) { + fbdpy->base.screen->destroy(fbdpy->base.screen); + fbdpy->base.screen = NULL; + } + } + + return (fbdpy->base.screen != NULL); +} + +static struct native_display * +fbdev_display_create(int fd, struct native_event_handler *event_handler) +{ + struct fbdev_display *fbdpy; + + fbdpy = CALLOC_STRUCT(fbdev_display); + if (!fbdpy) + return NULL; + + fbdpy->fd = fd; + fbdpy->event_handler = event_handler; + + if (!fbdev_display_init(&fbdpy->base)) { + FREE(fbdpy); + return NULL; + } + + fbdpy->base.destroy = fbdev_display_destroy; + fbdpy->base.get_param = fbdev_display_get_param; + fbdpy->base.get_configs = fbdev_display_get_configs; + + fbdpy->base.modeset = &fbdev_display_modeset; + + return &fbdpy->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; +} + +const char * +native_get_name(void) +{ + return "FBDEV"; +} + +struct native_display * +native_create_display(EGLNativeDisplayType dpy, + struct native_event_handler *event_handler) +{ + struct native_display *ndpy; + int fd; + + /* well, this makes fd 0 being ignored */ + if (dpy == EGL_DEFAULT_DISPLAY) { + fd = open("/dev/fb0", O_RDWR); + } + else { + fd = dup((int) pointer_to_intptr((void *) dpy)); + } + if (fd < 0) + return NULL; + + ndpy = fbdev_display_create(fd, event_handler); + if (!ndpy) + close(fd); + + return ndpy; +} -- cgit v1.2.3