diff options
author | sanine <sanine.not@pm.me> | 2023-02-12 23:53:22 -0600 |
---|---|---|
committer | sanine <sanine.not@pm.me> | 2023-02-12 23:53:22 -0600 |
commit | f1fe73d1909a2448a004a88362a1a532d0d4f7c3 (patch) | |
tree | ab37ae3837e2f858de2932bcee9f26e69fab3db1 /libs/cairo-1.16.0/src/cairo-egl-context.c | |
parent | f567ea1e2798fd3156a416e61f083ea3e6b95719 (diff) |
switch to tinyobj and nanovg from assimp and cairo
Diffstat (limited to 'libs/cairo-1.16.0/src/cairo-egl-context.c')
-rw-r--r-- | libs/cairo-1.16.0/src/cairo-egl-context.c | 317 |
1 files changed, 0 insertions, 317 deletions
diff --git a/libs/cairo-1.16.0/src/cairo-egl-context.c b/libs/cairo-1.16.0/src/cairo-egl-context.c deleted file mode 100644 index bf704c6..0000000 --- a/libs/cairo-1.16.0/src/cairo-egl-context.c +++ /dev/null @@ -1,317 +0,0 @@ -/* cairo - a vector graphics library with display and print output - * - * Copyright © 2009 Eric Anholt - * Copyright © 2009 Chris Wilson - * Copyright © 2005 Red Hat, Inc - * - * This library is free software; you can redistribute it and/or - * modify it either under the terms of the GNU Lesser General Public - * License version 2.1 as published by the Free Software Foundation - * (the "LGPL") or, at your option, under the terms of the Mozilla - * Public License Version 1.1 (the "MPL"). If you do not alter this - * notice, a recipient may use your version of this file under either - * the MPL or the LGPL. - * - * You should have received a copy of the LGPL along with this library - * in the file COPYING-LGPL-2.1; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA - * You should have received a copy of the MPL along with this library - * in the file COPYING-MPL-1.1 - * - * The contents of this file are subject to the Mozilla Public License - * Version 1.1 (the "License"); you may not use this file except in - * compliance with the License. You may obtain a copy of the License at - * http://www.mozilla.org/MPL/ - * - * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY - * OF ANY KIND, either express or implied. See the LGPL or the MPL for - * the specific language governing rights and limitations. - * - * The Original Code is the cairo graphics library. - * - * The Initial Developer of the Original Code is Red Hat, Inc. - * - * Contributor(s): - * Carl Worth <cworth@cworth.org> - * Chris Wilson <chris@chris-wilson.co.uk> - */ - -#include "cairoint.h" - -#include "cairo-gl-private.h" - -#include "cairo-error-private.h" - -typedef struct _cairo_egl_context { - cairo_gl_context_t base; - - EGLDisplay display; - EGLContext context; - - EGLSurface dummy_surface; - - EGLContext previous_context; - EGLSurface previous_surface; -} cairo_egl_context_t; - -typedef struct _cairo_egl_surface { - cairo_gl_surface_t base; - - EGLSurface egl; -} cairo_egl_surface_t; - - -static cairo_bool_t -_context_acquisition_changed_egl_state (cairo_egl_context_t *ctx, - EGLSurface current_surface) -{ - return ctx->previous_context != ctx->context || - ctx->previous_surface != current_surface; -} - -static EGLSurface -_egl_get_current_surface (cairo_egl_context_t *ctx) -{ - if (ctx->base.current_target == NULL || - _cairo_gl_surface_is_texture (ctx->base.current_target)) { - return ctx->dummy_surface; - } - - return ((cairo_egl_surface_t *) ctx->base.current_target)->egl; -} - -static void -_egl_query_current_state (cairo_egl_context_t *ctx) -{ - ctx->previous_surface = eglGetCurrentSurface (EGL_DRAW); - ctx->previous_context = eglGetCurrentContext (); - - /* If any of the values were none, assume they are all none. Not all - drivers seem well behaved when it comes to using these values across - multiple threads. */ - if (ctx->previous_surface == EGL_NO_SURFACE || - ctx->previous_context == EGL_NO_CONTEXT) { - ctx->previous_surface = EGL_NO_SURFACE; - ctx->previous_context = EGL_NO_CONTEXT; - } -} - -static void -_egl_acquire (void *abstract_ctx) -{ - cairo_egl_context_t *ctx = abstract_ctx; - EGLSurface current_surface = _egl_get_current_surface (ctx); - - _egl_query_current_state (ctx); - if (!_context_acquisition_changed_egl_state (ctx, current_surface)) - return; - - eglMakeCurrent (ctx->display, - current_surface, current_surface, ctx->context); -} - -static void -_egl_release (void *abstract_ctx) -{ - cairo_egl_context_t *ctx = abstract_ctx; - if (!ctx->base.thread_aware || - !_context_acquisition_changed_egl_state (ctx, - _egl_get_current_surface (ctx))) { - return; - } - - eglMakeCurrent (ctx->display, - EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT); -} - -static void -_egl_make_current (void *abstract_ctx, - cairo_gl_surface_t *abstract_surface) -{ - cairo_egl_context_t *ctx = abstract_ctx; - cairo_egl_surface_t *surface = (cairo_egl_surface_t *) abstract_surface; - - eglMakeCurrent(ctx->display, surface->egl, surface->egl, ctx->context); -} - -static void -_egl_swap_buffers (void *abstract_ctx, - cairo_gl_surface_t *abstract_surface) -{ - cairo_egl_context_t *ctx = abstract_ctx; - cairo_egl_surface_t *surface = (cairo_egl_surface_t *) abstract_surface; - - eglSwapBuffers (ctx->display, surface->egl); -} - -static void -_egl_destroy (void *abstract_ctx) -{ - cairo_egl_context_t *ctx = abstract_ctx; - - eglMakeCurrent (ctx->display, - EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT); - if (ctx->dummy_surface != EGL_NO_SURFACE) - eglDestroySurface (ctx->display, ctx->dummy_surface); -} - -static cairo_bool_t -_egl_make_current_surfaceless(cairo_egl_context_t *ctx) -{ - const char *extensions; - - extensions = eglQueryString(ctx->display, EGL_EXTENSIONS); - if (strstr(extensions, "EGL_KHR_surfaceless_context") == NULL && - strstr(extensions, "EGL_KHR_surfaceless_opengl") == NULL) - return FALSE; - - if (!eglMakeCurrent(ctx->display, - EGL_NO_SURFACE, EGL_NO_SURFACE, ctx->context)) - return FALSE; - - return TRUE; -} - -cairo_device_t * -cairo_egl_device_create (EGLDisplay dpy, EGLContext egl) -{ - cairo_egl_context_t *ctx; - cairo_status_t status; - int attribs[] = { - EGL_WIDTH, 1, - EGL_HEIGHT, 1, - EGL_NONE, - }; - EGLConfig config; - EGLint numConfigs; - - ctx = calloc (1, sizeof (cairo_egl_context_t)); - if (unlikely (ctx == NULL)) - return _cairo_gl_context_create_in_error (CAIRO_STATUS_NO_MEMORY); - - ctx->display = dpy; - ctx->context = egl; - - ctx->base.acquire = _egl_acquire; - ctx->base.release = _egl_release; - ctx->base.make_current = _egl_make_current; - ctx->base.swap_buffers = _egl_swap_buffers; - ctx->base.destroy = _egl_destroy; - - /* We are about the change the current state of EGL, so we should - * query the pre-existing surface now instead of later. */ - _egl_query_current_state (ctx); - - if (!_egl_make_current_surfaceless (ctx)) { - /* Fall back to dummy surface, meh. */ - EGLint config_attribs[] = { - EGL_CONFIG_ID, 0, - EGL_NONE - }; - - /* - * In order to be able to make an egl context current when using a - * pbuffer surface, that surface must have been created with a config - * that is compatible with the context config. For Mesa, this means - * that the configs must be the same. - */ - eglQueryContext (dpy, egl, EGL_CONFIG_ID, &config_attribs[1]); - eglChooseConfig (dpy, config_attribs, &config, 1, &numConfigs); - - ctx->dummy_surface = eglCreatePbufferSurface (dpy, config, attribs); - if (ctx->dummy_surface == NULL) { - free (ctx); - return _cairo_gl_context_create_in_error (CAIRO_STATUS_NO_MEMORY); - } - - if (!eglMakeCurrent (dpy, ctx->dummy_surface, ctx->dummy_surface, egl)) { - free (ctx); - return _cairo_gl_context_create_in_error (CAIRO_STATUS_NO_MEMORY); - } - } - - status = _cairo_gl_dispatch_init (&ctx->base.dispatch, eglGetProcAddress); - if (unlikely (status)) { - free (ctx); - return _cairo_gl_context_create_in_error (status); - } - - status = _cairo_gl_context_init (&ctx->base); - if (unlikely (status)) { - if (ctx->dummy_surface != EGL_NO_SURFACE) - eglDestroySurface (dpy, ctx->dummy_surface); - free (ctx); - return _cairo_gl_context_create_in_error (status); - } - - /* Tune the default VBO size to reduce overhead on embedded devices. - * This smaller size means that flushing needs to be done more often, - * but it is less demanding of scarce memory on embedded devices. - */ - ctx->base.vbo_size = 16*1024; - - eglMakeCurrent (dpy, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT); - - return &ctx->base.base; -} - -cairo_surface_t * -cairo_gl_surface_create_for_egl (cairo_device_t *device, - EGLSurface egl, - int width, - int height) -{ - cairo_egl_surface_t *surface; - - if (unlikely (device->status)) - return _cairo_surface_create_in_error (device->status); - - if (device->backend->type != CAIRO_DEVICE_TYPE_GL) - return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_SURFACE_TYPE_MISMATCH)); - - if (width <= 0 || height <= 0) - return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_INVALID_SIZE)); - - surface = calloc (1, sizeof (cairo_egl_surface_t)); - if (unlikely (surface == NULL)) - return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY)); - - _cairo_gl_surface_init (device, &surface->base, - CAIRO_CONTENT_COLOR_ALPHA, width, height); - surface->egl = egl; - - return &surface->base.base; -} - -static cairo_bool_t is_egl_device (cairo_device_t *device) -{ - return (device->backend != NULL && - device->backend->type == CAIRO_DEVICE_TYPE_GL); -} - -static cairo_egl_context_t *to_egl_context (cairo_device_t *device) -{ - return (cairo_egl_context_t *) device; -} - -EGLDisplay -cairo_egl_device_get_display (cairo_device_t *device) -{ - if (! is_egl_device (device)) { - _cairo_error_throw (CAIRO_STATUS_DEVICE_TYPE_MISMATCH); - return EGL_NO_DISPLAY; - } - - return to_egl_context (device)->display; -} - -cairo_public EGLContext -cairo_egl_device_get_context (cairo_device_t *device) -{ - if (! is_egl_device (device)) { - _cairo_error_throw (CAIRO_STATUS_DEVICE_TYPE_MISMATCH); - return EGL_NO_CONTEXT; - } - - return to_egl_context (device)->context; -} |