Jay Sorg
150 lines
4.5 KiB
C
150 lines
4.5 KiB
C
/**
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* xrdp: A Remote Desktop Protocol server.
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*
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* Copyright (C) Jay Sorg 2022-2024
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#if defined(HAVE_CONFIG_H)
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#include <config_ac.h>
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#endif
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <X11/Xlib.h>
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#include <epoxy/gl.h>
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#include <epoxy/glx.h>
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#include "arch.h"
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#include "os_calls.h"
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#include "string_calls.h"
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#include "xrdp_accel_assist.h"
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#include "xrdp_accel_assist_x11.h"
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#include "xrdp_accel_assist_glx.h"
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#include "log.h"
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static int g_n_fbconfigs = 0;
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static int g_n_pixconfigs = 0;
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static GLXFBConfig *g_fbconfigs = NULL;
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static GLXFBConfig *g_pixconfigs = NULL;
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static GLXContext g_gl_context = 0;
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/* X11 */
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extern Display *g_display; /* in xrdp_accel_assist_x11.c */
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extern Window g_root_window; /* in xrdp_accel_assist_x11.c */
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extern int g_screen_num; /* in xrdp_accel_assist_x11.c */
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static const int g_fbconfig_attrs[] =
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{
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GLX_DRAWABLE_TYPE, GLX_WINDOW_BIT,
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GLX_RENDER_TYPE, GLX_RGBA_BIT,
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GLX_DOUBLEBUFFER, True,
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GLX_RED_SIZE, 8,
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GLX_GREEN_SIZE, 8,
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GLX_BLUE_SIZE, 8,
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None
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};
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static const int g_pixconfig_attrs[] =
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{
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GLX_BIND_TO_TEXTURE_RGBA_EXT, True,
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GLX_DRAWABLE_TYPE, GLX_PIXMAP_BIT,
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GLX_BIND_TO_TEXTURE_TARGETS_EXT, GLX_TEXTURE_2D_BIT_EXT,
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GLX_DOUBLEBUFFER, False,
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GLX_Y_INVERTED_EXT, True,
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None
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};
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static const int g_pixmap_attribs[] =
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{
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GLX_TEXTURE_TARGET_EXT, GLX_TEXTURE_2D_EXT,
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GLX_TEXTURE_FORMAT_EXT, GLX_TEXTURE_FORMAT_RGBA_EXT,
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None
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};
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/*****************************************************************************/
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int
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xrdp_accel_assist_inf_glx_init(void)
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{
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const char *ext_str;
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int glx_ver;
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int ok;
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glx_ver = epoxy_glx_version(g_display, g_screen_num);
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LOG(LOG_LEVEL_INFO, "glx_ver %d", glx_ver);
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if (glx_ver < 11) /* GLX version 1.1 */
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{
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LOG(LOG_LEVEL_INFO, "glx_ver too old %d", glx_ver);
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return 1;
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}
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if (!epoxy_has_glx_extension(g_display, g_screen_num,
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"GLX_EXT_texture_from_pixmap"))
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{
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ext_str = glXQueryExtensionsString(g_display, g_screen_num);
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LOG(LOG_LEVEL_INFO, "GLX_EXT_texture_from_pixmap not present [%s]",
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ext_str);
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return 1;
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}
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LOG(LOG_LEVEL_INFO, "GLX_EXT_texture_from_pixmap present");
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g_fbconfigs = glXChooseFBConfig(g_display, g_screen_num,
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g_fbconfig_attrs, &g_n_fbconfigs);
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LOG(LOG_LEVEL_INFO, "g_fbconfigs %p", g_fbconfigs);
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g_gl_context = glXCreateNewContext(g_display, g_fbconfigs[0],
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GLX_RGBA_TYPE, NULL, 1);
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LOG(LOG_LEVEL_INFO, "g_gl_context %p", g_gl_context);
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ok = glXMakeCurrent(g_display, g_root_window, g_gl_context);
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LOG(LOG_LEVEL_INFO, "ok %d", ok);
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g_pixconfigs = glXChooseFBConfig(g_display, g_screen_num,
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g_pixconfig_attrs, &g_n_pixconfigs);
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LOG(LOG_LEVEL_INFO, "g_pixconfigs %p g_n_pixconfigs %d",
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g_pixconfigs, g_n_pixconfigs);
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return 0;
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}
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/*****************************************************************************/
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int
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xrdp_accel_assist_inf_glx_create_image(Pixmap pixmap, inf_image_t *inf_image)
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{
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*inf_image = (inf_image_t)glXCreatePixmap(g_display, g_pixconfigs[0],
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pixmap, g_pixmap_attribs);
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return 0;
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}
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/*****************************************************************************/
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int
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xrdp_accel_assist_inf_glx_destroy_image(inf_image_t inf_image)
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{
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glXDestroyPixmap(g_display, (GLXPixmap)inf_image);
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return 0;
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}
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/*****************************************************************************/
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int
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xrdp_accel_assist_inf_glx_bind_tex_image(inf_image_t inf_image)
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{
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glXBindTexImageEXT(g_display, (GLXPixmap)inf_image, GLX_FRONT_EXT, NULL);
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return 0;
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}
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/*****************************************************************************/
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int
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xrdp_accel_assist_inf_glx_release_tex_image(inf_image_t inf_image)
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{
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glXReleaseTexImageEXT(g_display, (GLXPixmap)inf_image, GLX_FRONT_EXT);
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return 0;
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}
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