diff options
Diffstat (limited to 'src/gallium/state_trackers/egl_g3d/kms/native_kms.c')
| -rw-r--r-- | src/gallium/state_trackers/egl_g3d/kms/native_kms.c | 866 |
1 files changed, 866 insertions, 0 deletions
diff --git a/src/gallium/state_trackers/egl_g3d/kms/native_kms.c b/src/gallium/state_trackers/egl_g3d/kms/native_kms.c new file mode 100644 index 0000000000..0e0babdb14 --- /dev/null +++ b/src/gallium/state_trackers/egl_g3d/kms/native_kms.c @@ -0,0 +1,866 @@ +/* + * Mesa 3-D graphics library + * Version: 7.8 + * + * Copyright (C) 2010 Chia-I Wu <olv@0xlab.org> + * + * 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 + * BRIAN PAUL 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 <string.h> + +#include "pipe/p_screen.h" +#include "pipe/p_context.h" +#include "util/u_debug.h" +#include "util/u_memory.h" +#include "egllog.h" + +#include "native_kms.h" + +static boolean +kms_surface_validate(struct native_surface *nsurf, + const enum native_attachment *natts, + unsigned num_natts, + struct pipe_texture **textures, + int *width, int *height) +{ + struct kms_surface *ksurf = kms_surface(nsurf); + struct kms_display *kdpy = ksurf->kdpy; + struct pipe_screen *screen = kdpy->base.screen; + struct pipe_texture templ, *ptex; + int i; + + if (num_natts) { + if (textures) + memset(textures, 0, sizeof(*textures) * num_natts); + + memset(&templ, 0, sizeof(templ)); + templ.target = PIPE_TEXTURE_2D; + templ.last_level = 0; + templ.width0 = ksurf->width; + templ.height0 = ksurf->height; + templ.depth0 = 1; + templ.format = ksurf->color_format; + templ.tex_usage = PIPE_TEXTURE_USAGE_RENDER_TARGET; + if (ksurf->type == KMS_SURFACE_TYPE_SCANOUT) + templ.tex_usage |= PIPE_TEXTURE_USAGE_PRIMARY; + } + + /* create textures */ + for (i = 0; i < num_natts; i++) { + enum native_attachment natt = natts[i]; + + ptex = ksurf->textures[natt]; + if (!ptex) { + ptex = screen->texture_create(screen, &templ); + ksurf->textures[natt] = ptex; + } + + if (textures) + pipe_texture_reference(&textures[i], ptex); + } + + if (width) + *width = ksurf->width; + if (height) + *height = ksurf->height; + + return TRUE; +} + +/** + * Add textures as DRM framebuffers. + */ +static boolean +kms_surface_init_framebuffers(struct native_surface *nsurf, boolean need_back) +{ + struct kms_surface *ksurf = kms_surface(nsurf); + struct kms_display *kdpy = ksurf->kdpy; + int num_framebuffers = (need_back) ? 2 : 1; + int i, err; + + for (i = 0; i < num_framebuffers; i++) { + struct kms_framebuffer *fb; + enum native_attachment natt; + unsigned int handle, stride; + uint block_bits; + + if (i == 0) { + fb = &ksurf->front_fb; + natt = NATIVE_ATTACHMENT_FRONT_LEFT; + } + else { + fb = &ksurf->back_fb; + natt = NATIVE_ATTACHMENT_BACK_LEFT; + } + + if (!fb->texture) { + /* make sure the texture has been allocated */ + kms_surface_validate(&ksurf->base, &natt, 1, NULL, NULL, NULL); + if (!ksurf->textures[natt]) + return FALSE; + + pipe_texture_reference(&fb->texture, ksurf->textures[natt]); + } + + /* already initialized */ + if (fb->buffer_id) + continue; + + /* TODO detect the real value */ + fb->is_passive = TRUE; + + if (!kdpy->api->local_handle_from_texture(kdpy->api, + kdpy->base.screen, fb->texture, &stride, &handle)) + return FALSE; + + block_bits = util_format_get_blocksizebits(ksurf->color_format); + err = drmModeAddFB(kdpy->fd, ksurf->width, ksurf->height, + block_bits, block_bits, stride, handle, &fb->buffer_id); + if (err) { + fb->buffer_id = 0; + return FALSE; + } + } + + return TRUE; +} + +static boolean +kms_surface_flush_frontbuffer(struct native_surface *nsurf) +{ +#ifdef DRM_MODE_FEATURE_DIRTYFB + struct kms_surface *ksurf = kms_surface(nsurf); + struct kms_display *kdpy = ksurf->kdpy; + + /* pbuffer is private */ + if (ksurf->type == KMS_SURFACE_TYPE_PBUFFER) + return TRUE; + + if (ksurf->front_fb.is_passive) + drmModeDirtyFB(kdpy->fd, ksurf->front_fb.buffer_id, NULL, 0); +#endif + + return TRUE; +} + +static boolean +kms_surface_swap_buffers(struct native_surface *nsurf) +{ + struct kms_surface *ksurf = kms_surface(nsurf); + struct kms_crtc *kcrtc = &ksurf->current_crtc; + struct kms_display *kdpy = ksurf->kdpy; + struct kms_framebuffer tmp_fb; + struct pipe_texture *tmp_texture; + int err; + + /* pbuffer is private */ + if (ksurf->type == KMS_SURFACE_TYPE_PBUFFER) + return TRUE; + + if (!ksurf->back_fb.buffer_id) { + if (!kms_surface_init_framebuffers(&ksurf->base, TRUE)) + return FALSE; + } + + if (ksurf->is_shown && kcrtc->crtc) { + err = drmModeSetCrtc(kdpy->fd, kcrtc->crtc->crtc_id, + ksurf->back_fb.buffer_id, kcrtc->crtc->x, kcrtc->crtc->y, + kcrtc->connectors, kcrtc->num_connectors, &kcrtc->crtc->mode); + if (err) + return FALSE; + } + + /* swap the buffers */ + tmp_fb = ksurf->front_fb; + ksurf->front_fb = ksurf->back_fb; + ksurf->back_fb = tmp_fb; + + tmp_texture = ksurf->textures[NATIVE_ATTACHMENT_FRONT_LEFT]; + ksurf->textures[NATIVE_ATTACHMENT_FRONT_LEFT] = + ksurf->textures[NATIVE_ATTACHMENT_BACK_LEFT]; + ksurf->textures[NATIVE_ATTACHMENT_BACK_LEFT] = tmp_texture; + + return TRUE; +} + +static void +kms_surface_wait(struct native_surface *nsurf) +{ + /* no-op */ +} + +static void +kms_surface_destroy(struct native_surface *nsurf) +{ + struct kms_surface *ksurf = kms_surface(nsurf); + int i; + + if (ksurf->current_crtc.crtc) + drmModeFreeCrtc(ksurf->current_crtc.crtc); + + if (ksurf->front_fb.buffer_id) + drmModeRmFB(ksurf->kdpy->fd, ksurf->front_fb.buffer_id); + pipe_texture_reference(&ksurf->front_fb.texture, NULL); + + if (ksurf->back_fb.buffer_id) + drmModeRmFB(ksurf->kdpy->fd, ksurf->back_fb.buffer_id); + pipe_texture_reference(&ksurf->back_fb.texture, NULL); + + for (i = 0; i < NUM_NATIVE_ATTACHMENTS; i++) { + struct pipe_texture *ptex = ksurf->textures[i]; + pipe_texture_reference(&ptex, NULL); + } + + free(ksurf); +} + +static struct kms_surface * +kms_display_create_surface(struct native_display *ndpy, + enum kms_surface_type type, + const struct native_config *nconf, + uint width, uint height) +{ + struct kms_display *kdpy = kms_display(ndpy); + struct kms_config *kconf = kms_config(nconf); + struct kms_surface *ksurf; + + ksurf = CALLOC_STRUCT(kms_surface); + if (!ksurf) + return NULL; + + ksurf->kdpy = kdpy; + ksurf->type = type; + ksurf->color_format = kconf->base.color_format; + ksurf->width = width; + ksurf->height = height; + + ksurf->base.destroy = kms_surface_destroy; + ksurf->base.swap_buffers = kms_surface_swap_buffers; + ksurf->base.flush_frontbuffer = kms_surface_flush_frontbuffer; + ksurf->base.validate = kms_surface_validate; + ksurf->base.wait = kms_surface_wait; + + return ksurf; +} + +/** + * Choose a CRTC that supports all given connectors. + */ +static uint32_t +kms_display_choose_crtc(struct native_display *ndpy, + uint32_t *connectors, int num_connectors) +{ + struct kms_display *kdpy = kms_display(ndpy); + int idx; + + for (idx = 0; idx < kdpy->resources->count_crtcs; idx++) { + boolean found_crtc = TRUE; + int i, j; + + for (i = 0; i < num_connectors; i++) { + drmModeConnectorPtr connector; + int encoder_idx = -1; + + connector = drmModeGetConnector(kdpy->fd, connectors[i]); + if (!connector) { + found_crtc = FALSE; + break; + } + + /* find an encoder the CRTC supports */ + for (j = 0; j < connector->count_encoders; j++) { + drmModeEncoderPtr encoder = + drmModeGetEncoder(kdpy->fd, connector->encoders[j]); + if (encoder->possible_crtcs & (1 << idx)) { + encoder_idx = j; + break; + } + drmModeFreeEncoder(encoder); + } + + drmModeFreeConnector(connector); + if (encoder_idx < 0) { + found_crtc = FALSE; + break; + } + } + + if (found_crtc) + break; + } + + if (idx >= kdpy->resources->count_crtcs) { + _eglLog(_EGL_WARNING, + "failed to find a CRTC that supports the given %d connectors", + num_connectors); + return 0; + } + + return kdpy->resources->crtcs[idx]; +} + +/** + * Remember the original CRTC status and set the CRTC + */ +static boolean +kms_display_set_crtc(struct native_display *ndpy, int crtc_idx, + uint32_t buffer_id, uint32_t x, uint32_t y, + uint32_t *connectors, int num_connectors, + drmModeModeInfoPtr mode) +{ + struct kms_display *kdpy = kms_display(ndpy); + struct kms_crtc *kcrtc = &kdpy->saved_crtcs[crtc_idx]; + uint32_t crtc_id; + int err; + + if (kcrtc->crtc) { + crtc_id = kcrtc->crtc->crtc_id; + } + else { + int count = 0, i; + + /* + * Choose the CRTC once. It could be more dynamic, but let's keep it + * simple for now. + */ + crtc_id = kms_display_choose_crtc(&kdpy->base, + connectors, num_connectors); + + /* save the original CRTC status */ + kcrtc->crtc = drmModeGetCrtc(kdpy->fd, crtc_id); + if (!kcrtc->crtc) + return FALSE; + + for (i = 0; i < kdpy->num_connectors; i++) { + struct kms_connector *kconn = &kdpy->connectors[i]; + drmModeConnectorPtr connector = kconn->connector; + drmModeEncoderPtr encoder; + + encoder = drmModeGetEncoder(kdpy->fd, connector->encoder_id); + if (encoder) { + if (encoder->crtc_id == crtc_id) { + kcrtc->connectors[count++] = connector->connector_id; + if (count >= Elements(kcrtc->connectors)) + break; + } + drmModeFreeEncoder(encoder); + } + } + + kcrtc->num_connectors = count; + } + + err = drmModeSetCrtc(kdpy->fd, crtc_id, buffer_id, x, y, + connectors, num_connectors, mode); + if (err) { + drmModeFreeCrtc(kcrtc->crtc); + kcrtc->crtc = NULL; + kcrtc->num_connectors = 0; + + return FALSE; + } + + return TRUE; +} + +static boolean +kms_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 kms_display *kdpy = kms_display(ndpy); + struct kms_surface *ksurf = kms_surface(nsurf); + const struct kms_mode *kmode = kms_mode(nmode); + uint32_t connector_ids[32]; + uint32_t buffer_id; + drmModeModeInfo mode_tmp, *mode; + int i; + + if (num_nconns > Elements(connector_ids)) { + _eglLog(_EGL_WARNING, "too many connectors (%d)", num_nconns); + num_nconns = Elements(connector_ids); + } + + if (ksurf) { + if (!kms_surface_init_framebuffers(&ksurf->base, FALSE)) + return FALSE; + + buffer_id = ksurf->front_fb.buffer_id; + /* the mode argument of drmModeSetCrtc is not constified */ + mode_tmp = kmode->mode; + mode = &mode_tmp; + } + else { + /* disable the CRTC */ + buffer_id = 0; + mode = NULL; + num_nconns = 0; + } + + for (i = 0; i < num_nconns; i++) { + struct kms_connector *kconn = kms_connector(nconns[i]); + connector_ids[i] = kconn->connector->connector_id; + } + + if (!kms_display_set_crtc(&kdpy->base, crtc_idx, buffer_id, x, y, + connector_ids, num_nconns, mode)) { + _eglLog(_EGL_WARNING, "failed to set CRTC %d", crtc_idx); + + return FALSE; + } + + if (kdpy->shown_surfaces[crtc_idx]) + kdpy->shown_surfaces[crtc_idx]->is_shown = FALSE; + kdpy->shown_surfaces[crtc_idx] = ksurf; + + /* remember the settings for buffer swapping */ + if (ksurf) { + uint32_t crtc_id = kdpy->saved_crtcs[crtc_idx].crtc->crtc_id; + struct kms_crtc *kcrtc = &ksurf->current_crtc; + + if (kcrtc->crtc) + drmModeFreeCrtc(kcrtc->crtc); + kcrtc->crtc = drmModeGetCrtc(kdpy->fd, crtc_id); + + assert(num_nconns < Elements(kcrtc->connectors)); + memcpy(kcrtc->connectors, connector_ids, + sizeof(*connector_ids) * num_nconns); + kcrtc->num_connectors = num_nconns; + + ksurf->is_shown = TRUE; + } + + return TRUE; +} + +static const struct native_mode ** +kms_display_get_modes(struct native_display *ndpy, + const struct native_connector *nconn, + int *num_modes) +{ + struct kms_display *kdpy = kms_display(ndpy); + struct kms_connector *kconn = kms_connector(nconn); + const struct native_mode **nmodes_return; + int count, i; + + /* delete old data */ + if (kconn->connector) { + drmModeFreeConnector(kconn->connector); + free(kconn->kms_modes); + + kconn->connector = NULL; + kconn->kms_modes = NULL; + kconn->num_modes = 0; + } + + /* detect again */ + kconn->connector = drmModeGetConnector(kdpy->fd, kconn->connector_id); + if (!kconn->connector) + return NULL; + + count = kconn->connector->count_modes; + kconn->kms_modes = calloc(count, sizeof(*kconn->kms_modes)); + if (!kconn->kms_modes) { + drmModeFreeConnector(kconn->connector); + kconn->connector = NULL; + + return NULL; + } + + for (i = 0; i < count; i++) { + struct kms_mode *kmode = &kconn->kms_modes[i]; + drmModeModeInfoPtr mode = &kconn->connector->modes[i]; + + kmode->mode = *mode; + + kmode->base.desc = kmode->mode.name; + kmode->base.width = kmode->mode.hdisplay; + kmode->base.height = kmode->mode.vdisplay; + kmode->base.refresh_rate = kmode->mode.vrefresh / 1000; + } + + nmodes_return = malloc(count * sizeof(*nmodes_return)); + if (nmodes_return) { + for (i = 0; i < count; i++) + nmodes_return[i] = &kconn->kms_modes[i].base; + if (num_modes) + *num_modes = count; + } + + return nmodes_return; +} + +static const struct native_connector ** +kms_display_get_connectors(struct native_display *ndpy, int *num_connectors, + int *num_crtc) +{ + struct kms_display *kdpy = kms_display(ndpy); + const struct native_connector **connectors; + int i; + + if (!kdpy->connectors) { + kdpy->connectors = + calloc(kdpy->resources->count_connectors, sizeof(*kdpy->connectors)); + if (!kdpy->connectors) + return NULL; + + for (i = 0; i < kdpy->resources->count_connectors; i++) { + struct kms_connector *kconn = &kdpy->connectors[i]; + + kconn->connector_id = kdpy->resources->connectors[i]; + /* kconn->connector is allocated when the modes are asked */ + } + + kdpy->num_connectors = kdpy->resources->count_connectors; + } + + connectors = malloc(kdpy->num_connectors * sizeof(*connectors)); + if (connectors) { + for (i = 0; i < kdpy->num_connectors; i++) + connectors[i] = &kdpy->connectors[i].base; + if (num_connectors) + *num_connectors = kdpy->num_connectors; + } + + if (num_crtc) + *num_crtc = kdpy->resources->count_crtcs; + + return connectors; +} + +static struct native_surface * +kms_display_create_scanout_surface(struct native_display *ndpy, + const struct native_config *nconf, + uint width, uint height) +{ + struct kms_surface *ksurf; + + ksurf = kms_display_create_surface(ndpy, + KMS_SURFACE_TYPE_SCANOUT, nconf, width, height); + return &ksurf->base; +} + +static struct native_surface * +kms_display_create_pbuffer_surface(struct native_display *ndpy, + const struct native_config *nconf, + uint width, uint height) +{ + struct kms_surface *ksurf; + + ksurf = kms_display_create_surface(ndpy, + KMS_SURFACE_TYPE_PBUFFER, nconf, width, height); + return &ksurf->base; +} + +static struct pipe_context * +kms_display_create_context(struct native_display *ndpy, void *context_private) +{ + struct kms_display *kdpy = kms_display(ndpy); + struct pipe_context *pctx; + + pctx = kdpy->api->create_context(kdpy->api, kdpy->base.screen); + if (pctx) + pctx->priv = context_private; + return pctx; +} + +static boolean +kms_display_is_format_supported(struct native_display *ndpy, + enum pipe_format fmt, boolean is_color) +{ + return ndpy->screen->is_format_supported(ndpy->screen, + fmt, PIPE_TEXTURE_2D, + (is_color) ? PIPE_TEXTURE_USAGE_RENDER_TARGET : + PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0); +} + +static const struct native_config ** +kms_display_get_configs(struct native_display *ndpy, int *num_configs) +{ + struct kms_display *kdpy = kms_display(ndpy); + const struct native_config **configs; + + /* first time */ + if (!kdpy->config) { + struct native_config *nconf; + enum pipe_format format; + + kdpy->config = calloc(1, sizeof(*kdpy->config)); + if (!kdpy->config) + return NULL; + + nconf = &kdpy->config->base; + + /* always double-buffered */ + nconf->mode.doubleBufferMode = TRUE; + + format = PIPE_FORMAT_A8R8G8B8_UNORM; + if (!kms_display_is_format_supported(&kdpy->base, format, TRUE)) { + format = PIPE_FORMAT_B8G8R8A8_UNORM; + if (!kms_display_is_format_supported(&kdpy->base, format, TRUE)) + format = PIPE_FORMAT_NONE; + } + if (format == PIPE_FORMAT_NONE) + return NULL; + + nconf->color_format = format; + nconf->mode.redBits = 8; + nconf->mode.greenBits = 8; + nconf->mode.blueBits = 8; + nconf->mode.alphaBits = 8; + nconf->mode.rgbBits = 32; + + format = PIPE_FORMAT_S8Z24_UNORM; + if (!kms_display_is_format_supported(&kdpy->base, format, FALSE)) { + format = PIPE_FORMAT_Z24S8_UNORM; + if (!kms_display_is_format_supported(&kdpy->base, format, FALSE)) + format = PIPE_FORMAT_NONE; + } + if (format != PIPE_FORMAT_NONE) { + nconf->depth_format = format; + nconf->stencil_format = format; + + nconf->mode.depthBits = 24; + nconf->mode.stencilBits = 8; + nconf->mode.haveDepthBuffer = TRUE; + nconf->mode.haveStencilBuffer = TRUE; + } + + nconf->scanout_bit = TRUE; + nconf->mode.drawableType = GLX_PBUFFER_BIT; + nconf->mode.swapMethod = GLX_SWAP_EXCHANGE_OML; + + nconf->mode.visualID = 0; + nconf->mode.visualType = EGL_NONE; + + nconf->mode.renderType = GLX_RGBA_BIT; + nconf->mode.rgbMode = TRUE; + nconf->mode.xRenderable = FALSE; + } + + configs = malloc(sizeof(*configs)); + if (configs) { + configs[0] = &kdpy->config->base; + if (num_configs) + *num_configs = 1; + } + + return configs; +} + +static void +kms_display_destroy(struct native_display *ndpy) +{ + struct kms_display *kdpy = kms_display(ndpy); + int i; + + if (kdpy->config) + free(kdpy->config); + + if (kdpy->connectors) { + for (i = 0; i < kdpy->num_connectors; i++) { + struct kms_connector *kconn = &kdpy->connectors[i]; + if (kconn->connector) { + drmModeFreeConnector(kconn->connector); + free(kconn->kms_modes); + } + } + free(kdpy->connectors); + } + + if (kdpy->shown_surfaces) + free(kdpy->shown_surfaces); + + if (kdpy->saved_crtcs) { + for (i = 0; i < kdpy->resources->count_crtcs; i++) { + struct kms_crtc *kcrtc = &kdpy->saved_crtcs[i]; + + if (kcrtc->crtc) { + /* restore crtc */ + drmModeSetCrtc(kdpy->fd, kcrtc->crtc->crtc_id, + kcrtc->crtc->buffer_id, kcrtc->crtc->x, kcrtc->crtc->y, + kcrtc->connectors, kcrtc->num_connectors, + &kcrtc->crtc->mode); + + drmModeFreeCrtc(kcrtc->crtc); + } + } + free(kdpy->saved_crtcs); + } + + if (kdpy->resources) + drmModeFreeResources(kdpy->resources); + + if (kdpy->base.screen) + kdpy->base.screen->destroy(kdpy->base.screen); + + if (kdpy->fd >= 0) + drmClose(kdpy->fd); + + if (kdpy->api) + kdpy->api->destroy(kdpy->api); + free(kdpy); +} + +/** + * Initialize KMS and pipe screen. + */ +static boolean +kms_display_init_screen(struct native_display *ndpy) +{ + struct kms_display *kdpy = kms_display(ndpy); + struct drm_create_screen_arg arg; + int fd; + + fd = drmOpen(kdpy->api->name, NULL); + if (fd < 0) { + _eglLog(_EGL_WARNING, "failed to open DRM device"); + return FALSE; + } + +#if 0 + if (drmSetMaster(fd)) { + _eglLog(_EGL_WARNING, "failed to become DRM master"); + return FALSE; + } +#endif + + memset(&arg, 0, sizeof(arg)); + arg.mode = DRM_CREATE_NORMAL; + kdpy->base.screen = kdpy->api->create_screen(kdpy->api, fd, &arg); + if (!kdpy->base.screen) { + _eglLog(_EGL_WARNING, "failed to create DRM screen"); + drmClose(fd); + return FALSE; + } + + kdpy->fd = fd; + + return TRUE; +} + +static struct native_display_modeset kms_display_modeset = { + .get_connectors = kms_display_get_connectors, + .get_modes = kms_display_get_modes, + .create_scanout_surface = kms_display_create_scanout_surface, + .program = kms_display_program +}; + +static struct native_display * +kms_create_display(EGLNativeDisplayType dpy, struct drm_api *api, + native_flush_frontbuffer flush_frontbuffer) +{ + struct kms_display *kdpy; + + kdpy = CALLOC_STRUCT(kms_display); + if (!kdpy) + return NULL; + + kdpy->api = api; + if (!kdpy->api) { + _eglLog(_EGL_WARNING, "failed to create DRM API"); + free(kdpy); + return NULL; + } + + kdpy->fd = -1; + if (!kms_display_init_screen(&kdpy->base)) { + kms_display_destroy(&kdpy->base); + return NULL; + } + + /* resources are fixed, unlike crtc, connector, or encoder */ + kdpy->resources = drmModeGetResources(kdpy->fd); + if (!kdpy->resources) { + kms_display_destroy(&kdpy->base); + return NULL; + } + + kdpy->saved_crtcs = + calloc(kdpy->resources->count_crtcs, sizeof(*kdpy->saved_crtcs)); + if (!kdpy->saved_crtcs) { + kms_display_destroy(&kdpy->base); + return NULL; + } + + kdpy->shown_surfaces = + calloc(kdpy->resources->count_crtcs, sizeof(*kdpy->shown_surfaces)); + if (!kdpy->shown_surfaces) { + kms_display_destroy(&kdpy->base); + return NULL; + } + + kdpy->base.screen->flush_frontbuffer = + (void (*)(struct pipe_screen *, struct pipe_surface *, void *)) + flush_frontbuffer; + + kdpy->base.destroy = kms_display_destroy; + kdpy->base.get_configs = kms_display_get_configs; + kdpy->base.create_context = kms_display_create_context; + kdpy->base.create_pbuffer_surface = kms_display_create_pbuffer_surface; + + kdpy->base.modeset = &kms_display_modeset; + + return &kdpy->base; +} + +static void +dummy_flush_frontbuffer(void *dummy, struct pipe_surface *surf, + void *context_private) +{ + _eglLog(_EGL_WARNING, "flush_frontbuffer is not supplied"); +} + +/* the api is destroyed with the native display */ +static struct drm_api *drm_api; + +const char * +native_get_name(void) +{ + static char kms_name[32]; + + if (!drm_api) + drm_api = drm_api_create(); + + if (drm_api) + snprintf(kms_name, sizeof(kms_name), "KMS/%s", drm_api->name); + else + snprintf(kms_name, sizeof(kms_name), "KMS"); + + return kms_name; +} + +struct native_display * +native_create_display(EGLNativeDisplayType dpy, + native_flush_frontbuffer flush_frontbuffer) +{ + struct native_display *ndpy = NULL; + + if (!drm_api) + drm_api = drm_api_create(); + + if (!flush_frontbuffer) + flush_frontbuffer = dummy_flush_frontbuffer; + + if (drm_api) + ndpy = kms_create_display(dpy, drm_api, flush_frontbuffer); + + return ndpy; +} |