Attachment 116536 Details for Bug 90871 – test program

test program

tfp-test.c (text/plain), 10.44 KB, created by Olivier Fourdan on 2015-06-16 19:13:15 UTC

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Creator: Olivier Fourdan

Created: 2015-06-16 19:13:15 UTC

Size: 10.44 KB

patch

obsolete

>/*
> * gcc -g tfp-test.c -o tfp-test $(pkg-config --cflags --libs epoxy xrender xfixes xcomposite x11)
> */
>
>#include<stdio.h>
>#include<stdlib.h>
>#include<string.h>
>
>#include<X11/Xlib.h>
>#include <X11/extensions/shape.h>
>#include <X11/extensions/Xrender.h>
>#include <X11/extensions/Xcomposite.h>
>#include <X11/extensions/Xdamage.h>
>
>#include <epoxy/gl.h>
>#include <epoxy/glx.h>
>
>#define USE_COW 0
>
>Display *dpy;
>int screen;
>int depth;
>Visual *visual;
>Window root;
>XSetWindowAttributes swa;
>Window win;
>GLXWindow glw;
>GLXContext glc;
>Pixmap pixmap;
>int pixmap_width = 1920, pixmap_height = 1200;
>GC gc;
>GLuint texture_id;
>GLenum texture_type;
>GLint texture_target = 0;
>GLint texture_format = 0;
>bool texture_inverted = false;
>bool has_texture_rectangle;
>GLXFBConfig fb_config;
>GLXPixmap glxpixmap = 0;
>
>void
>Repaint ()
>{
>    static int rgb = 0;
>    XRenderColor background = { 0x7fff, 0x7fff, 0x7fff, 0xffff };
>    XRenderColor foreground = { 0x0000, 0x0000, 0x0000, 0xffff };
>    XRenderPictFormat *render_format;
>    Picture pict;
>
>    switch (rgb)
>    {
>        case 0:
>            foreground.red = 0xffff;
>            rgb++;
>            break;
>        case 1:
>            foreground.green = 0xffff;
>            rgb++;
>            break;
>        case 2:
>            foreground.blue = 0xffff;
>            rgb++;
>            break;
>        default:
>            rgb = 0;
>            break;
>    }
>
>    render_format = XRenderFindVisualFormat (dpy, visual);
>    pict = XRenderCreatePicture (dpy, pixmap, render_format, 0, NULL);
>    XRenderFillRectangle (dpy, PictOpSrc, pict, &background, 0, 0,
>        pixmap_width, pixmap_height);
>    XRenderFillRectangle (dpy, PictOpSrc, pict, &foreground, 20, 20,
>        pixmap_width - 40, pixmap_height - 40);
>    XRenderFreePicture (dpy, pict);
>    XFlush (dpy);
>}
>
>void
>Rebind ()
>{
>    glXBindTexImageEXT (dpy, glxpixmap, GLX_FRONT_EXT, NULL);
>    glEnable (texture_type);
>    glTexParameteri (texture_type,
>                     GL_TEXTURE_MIN_FILTER,
>                     GL_LINEAR);
>    glTexParameteri (texture_type,
>                     GL_TEXTURE_MAG_FILTER,
>                     GL_LINEAR);
>}
>
>void
>Redraw ()
>{
>    XWindowAttributes gwa;
>
>    glXWaitX ();
>    Repaint ();
>    Rebind ();
>
>    XGetWindowAttributes (dpy, win, &gwa);
>    glViewport (0, 0, gwa.width, gwa.height);
>
>    glPushMatrix ();
>
>    glScaled (1.0, 1.0, 1.0);
>    glTranslated (0.0, 0.0, 0.0);
>
>    glBegin (GL_QUADS);
>    glTexCoord2f(0.0, texture_inverted ? 1.0 : 0.0);
>    glVertex3f(-1.0,  1.0, 0.0);
>    glTexCoord2f(1.0, texture_inverted ? 1.0 : 0.0);
>    glVertex3f( 1.0,  1.0, 0.0);
>    glTexCoord2f(1.0, texture_inverted ? 0.0 : 1.0);
>    glVertex3f( 1.0, -1.0, 0.0);
>    glTexCoord2f(0.0, texture_inverted ? 0.0 : 1.0);
>    glVertex3f(-1.0, -1.0, 0.0);
>    glEnd ();
>
>    glPopMatrix ();
>
>    glXSwapBuffers (dpy, glw);
>    glDisable (texture_type);
>    glXReleaseTexImageEXT (dpy, glxpixmap, GLX_FRONT_EXT);
>}
>
>void
>GetFBConfig ()
>{
>    static GLint visual_attribs[] = {
>        GLX_DRAWABLE_TYPE, GLX_PIXMAP_BIT | GLX_WINDOW_BIT,
>        GLX_X_RENDERABLE, True,
>        GLX_DOUBLEBUFFER, True,
>        GLX_CONFIG_CAVEAT, GLX_DONT_CARE,
>        GLX_DEPTH_SIZE, 1,
>        GLX_RED_SIZE, 1,
>        GLX_GREEN_SIZE, 1,
>        GLX_BLUE_SIZE, 1,
>        GLX_RENDER_TYPE, GLX_RGBA_BIT,
>        None
>    };
>
>    int n_configs, i;
>    int value, status;
>    GLXFBConfig *configs;
>    XVisualInfo *visual_info;
>    int fb_match;
>    VisualID xvisual_id;
>
>    has_texture_rectangle =
>        epoxy_has_glx_extension (dpy, screen, "GL_ARB_texture_rectangle");
>    if (has_texture_rectangle)
>    {
>        printf ("Using texture type GL_TEXTURE_RECTANGLE_ARB\n");
>        texture_type = GL_TEXTURE_RECTANGLE_ARB;
>    }
>    else
>    {
>        printf ("Using texture type GL_TEXTURE_2D\n");
>        texture_type = GL_TEXTURE_2D;
>    }
>
>    configs = glXChooseFBConfig (dpy, screen, visual_attribs, &n_configs);
>    if (configs == NULL)
>    {
>        printf ("\n\tCannot retrieve GLX frame buffer config.\n\n");
>        exit (0);
>    }
>
>    fb_match = False;
>    xvisual_id = XVisualIDFromVisual (visual);
>    for (i = 0; i < n_configs; i++)
>    {
>        visual_info = glXGetVisualFromFBConfig (dpy, configs[i]);
>        if (!visual_info)
>        {
>            printf ("%i/%i: no visual info, skipped\n", i + 1, n_configs);
>            continue;
>        }
>
>        if (visual_info->visualid != xvisual_id)
>        {
>            printf ("%i/%i: xvisual id 0x%lx != 0x%lx, skipped\n", i + 1,
>                    n_configs, visual_info->visualid, xvisual_id);
>            XFree (visual_info);
>            continue;
>        }
>        XFree (visual_info);
>
>        status =
>            glXGetFBConfigAttrib (dpy, configs[i], GLX_DRAWABLE_TYPE, &value);
>
>        if (status != Success || !(value & GLX_PIXMAP_BIT))
>        {
>            printf ("%i/%i: No GLX_PIXMAP_BIT, skipped\n", i + 1, n_configs);
>            continue;
>        }
>
>        status = glXGetFBConfigAttrib (dpy, configs[i],
>            GLX_BIND_TO_TEXTURE_TARGETS_EXT, &value);
>        if (status != Success)
>        {
>            printf ("%i/%i: No GLX_BIND_TO_TEXTURE_TARGETS_EXT, skipped\n", i + 1, n_configs);
>            continue;
>        }
>
>        if (texture_type == GL_TEXTURE_RECTANGLE_ARB)
>        {
>            if (value & GLX_TEXTURE_RECTANGLE_BIT_EXT)
>            {
>                texture_target = GLX_TEXTURE_RECTANGLE_EXT;
>                printf ("Using texture target GLX_TEXTURE_RECTANGLE_EXT\n");
>            }
>            else
>            {
>                printf ("%i/%i: No GLX_TEXTURE_RECTANGLE_BIT_EXT, skipped\n", i + 1, n_configs);
>                continue;
>            }
>        }
>        else if (texture_type == GL_TEXTURE_2D)
>        {
>            if (value & GLX_TEXTURE_2D_BIT_EXT)
>            {
>                texture_target = GLX_TEXTURE_2D_EXT;
>                printf ("Using texture target GLX_TEXTURE_2D_EXT\n");
>            }
>            else
>            {
>                printf ("%i/%i: No GLX_TEXTURE_2D_BIT_EXT, skipped\n", i + 1, n_configs);
>                continue;
>            }
>        }
>        else
>        {
>            printf ("%i/%i: No GLX_TEXTURE_*_BIT_EXT, skipped\n", i + 1, n_configs);
>            continue;
>        }
>
>        status = glXGetFBConfigAttrib (dpy,
>            configs[i], GLX_BIND_TO_TEXTURE_RGBA_EXT, &value);
>        if (status == Success && value == True)
>        {
>            texture_format = GLX_TEXTURE_FORMAT_RGBA_EXT;
>            printf ("Using texture format GLX_TEXTURE_FORMAT_RGBA_EXT\n");
>        }
>        else
>        {
>            status =
>                glXGetFBConfigAttrib (dpy, configs[i],
>                GLX_BIND_TO_TEXTURE_RGB_EXT, &value);
>            if (status == Success && value == True)
>            {
>                printf ("Using texture format GLX_TEXTURE_FORMAT_RGB_EXT\n");
>                texture_format = GLX_TEXTURE_FORMAT_RGB_EXT;
>            }
>            else
>            {
>                printf ("%i/%i: No GLX_BIND_TO_TEXTURE_RGB/RGBA_EXT, skipped\n",
>                    i + 1, n_configs);
>                continue;
>            }
>        }
>
>        status =
>            glXGetFBConfigAttrib (dpy, configs[i], GLX_Y_INVERTED_EXT,
>            &value);
>        texture_inverted = (status == Success && value == True);
>        if (texture_inverted)
>        {
>            printf ("Using texture attribute GLX_Y_INVERTED_EXT\n");
>            texture_inverted = True;
>        }
>
>        fb_config = configs[i];
>        fb_match = True;
>        break;
>    }
>    XFree (configs);
>
>    if (fb_match == False)
>    {
>        printf ("\n\tCannot find a matching visual for the frame buffer config.\n\n");
>        exit (0);
>    }
>}
>
>int
>main (int argc, char *argv[])
>{
>    GLint pixmap_attribs[] = {
>        GLX_TEXTURE_TARGET_EXT, GLX_TEXTURE_2D_EXT,
>        GLX_TEXTURE_FORMAT_EXT, GLX_TEXTURE_FORMAT_RGB_EXT,
>        None
>    };
>    Window cow, parent;
>    XEvent xev;
>
>    dpy = XOpenDisplay (NULL);
>    if (dpy == NULL)
>    {
>        printf ("\n\tcannot open display\n\n");
>        exit (0);
>    }
>
>    root = DefaultRootWindow (dpy);
>    screen = DefaultScreen (dpy);
>    depth = DefaultDepth (dpy, screen);
>    visual = DefaultVisual (dpy, screen);
>    pixmap_width = WidthOfScreen (DefaultScreenOfDisplay(dpy));
>    pixmap_height = HeightOfScreen (DefaultScreenOfDisplay(dpy));
>
>    if (epoxy_glx_version (dpy, screen) < 13)
>    {
>        printf ("\n\tGLX version is too old\n\n");
>        exit (0);
>    }
>
>    if (!epoxy_has_glx_extension (dpy, screen, "GLX_EXT_texture_from_pixmap"))
>    {
>        printf ("\n\tmissing GLX_EXT_texture_from_pixmap extension\n\n");
>        exit (0);
>    }
>#if USE_COW
>    cow = XCompositeGetOverlayWindow (dpy, root);
>    if (cow)
>    {
>        XserverRegion region;
>
>        printf ("Using CoW as parent\n");
>        parent = cow;
>        XSelectInput (dpy, cow, ExposureMask);
>        XMapRaised (dpy, cow);
>    }
>    else
>#endif
>    {
>        printf ("Using root as parent\n");
>        parent = root;
>    }
>    swa.event_mask =
>        ExposureMask | KeyPressMask | ButtonPressMask | ButtonReleaseMask;
>    win =
>        XCreateWindow (dpy, parent, 0, 0, pixmap_width, pixmap_height, 0, depth,
>        InputOutput, visual, CWEventMask, &swa);
>    XMapWindow (dpy, win);
>    XStoreName (dpy, win, "PIXMAP TO TEXTURE");
>#if USE_COW
>    XCompositeRedirectSubwindows (dpy, root, CompositeRedirectManual);
>#endif
>    GetFBConfig ();
>    glc = glXCreateNewContext (dpy, fb_config, GLX_RGBA_TYPE, 0, GL_TRUE);
>    if (glc == NULL)
>    {
>        printf ("\n\tcannot create gl context\n\n");
>        exit (0);
>    }
>
>    glw = glXCreateWindow (dpy, fb_config, win, NULL);
>    if (!glw)
>    {
>        printf ("\n\tCould not create GLX window.\n");
>        exit (0);
>    }
>
>    if (!glXMakeCurrent (dpy, glw, glc))
>    {
>        printf ("\n\tCould not make OpenGL context current.\n\n");
>        exit (0);
>    }
>
>    pixmap = XCreatePixmap (dpy, root, pixmap_width, pixmap_height, depth);
>
>    pixmap_attribs[1] = texture_target;
>    pixmap_attribs[3] = texture_format;
>    glxpixmap = glXCreatePixmap (dpy, fb_config, pixmap, pixmap_attribs);
>
>    glEnable(texture_type);
>    glGenTextures (1, &texture_id);
>    glBindTexture (texture_type, texture_id);
>
>    while (1)
>    {
>        XNextEvent (dpy, &xev);
>
>        Redraw ();
>        if (xev.type == KeyPress)
>        {
>            glXReleaseTexImageEXT (dpy, glxpixmap, GLX_FRONT_EXT);
>            XFreePixmap (dpy, pixmap);
>
>            glXMakeCurrent (dpy, None, NULL);
>            glXDestroyContext (dpy, glc);
>            XDestroyWindow (dpy, win);
>            XCloseDisplay (dpy);
>            exit (0);
>        }
>    }
>}

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Attachments on bug 90871: 116415 | 116416 | 116536 | 116544 | 117490 | 117491 | 118995

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