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Reuse glx_has_extension for old backend

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Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
This commit is contained in:
Yuxuan Shui
2019-02-08 22:34:53 +00:00
parent edb8b38eef
commit 343140f845
5 changed files with 51 additions and 74 deletions
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40
src/backend/gl/glx.c
View File

@ -54,8 +54,8 @@ struct _glx_data {
struct glx_fbconfig_info *
glx_find_fbconfig(Display *dpy, int screen, struct glx_fbconfig_criteria m) {
log_debug("Looking for FBConfig for RGBA%d%d%d%d, depth %d", m.red_size, m.blue_size,
m.green_size, m.alpha_size, m.visual_depth);
log_debug("Looking for FBConfig for RGBA%d%d%d%d, depth %d", m.red_size,
m.blue_size, m.green_size, m.alpha_size, m.visual_depth);
int ncfg;
// clang-format off
@ -130,15 +130,18 @@ glx_find_fbconfig(Display *dpy, int screen, struct glx_fbconfig_criteria m) {
// All check passed, we are using this one.
found = true;
ret = cfg[i];
glXGetFBConfigAttribChecked(dpy, cfg[i], GLX_BIND_TO_TEXTURE_TARGETS_EXT, &texture_tgts);
glXGetFBConfigAttribChecked(dpy, cfg[i], GLX_BIND_TO_TEXTURE_TARGETS_EXT,
&texture_tgts);
glXGetFBConfigAttribChecked(dpy, cfg[i], GLX_Y_INVERTED_EXT, &y_inverted);
// Prefer the texture format with matching alpha, with the other one as
// fallback
if (m.alpha_size) {
texture_fmt = rgba ? GLX_TEXTURE_FORMAT_RGBA_EXT : GLX_TEXTURE_FORMAT_RGB_EXT;
texture_fmt = rgba ? GLX_TEXTURE_FORMAT_RGBA_EXT
: GLX_TEXTURE_FORMAT_RGB_EXT;
} else {
texture_fmt = rgb ? GLX_TEXTURE_FORMAT_RGB_EXT : GLX_TEXTURE_FORMAT_RGBA_EXT;
texture_fmt =
rgb ? GLX_TEXTURE_FORMAT_RGB_EXT : GLX_TEXTURE_FORMAT_RGBA_EXT;
}
min_cost = depthbuf + stencil + bufsize * (doublebuf + 1);
}
@ -156,28 +159,6 @@ glx_find_fbconfig(Display *dpy, int screen, struct glx_fbconfig_criteria m) {
return info;
}
/**
* Check if a GLX extension exists.
*/
static inline bool glx_has_extension(session_t *ps, const char *ext) {
const char *glx_exts = glXQueryExtensionsString(ps->dpy, ps->scr);
if (!glx_exts) {
log_error("Failed get GLX extension list.");
return false;
}
int len = strlen(ext);
char *found = strstr(glx_exts, ext);
if (!found) {
log_info("Missing GLX extension %s.", ext);
return false;
}
// Make sure extension names are not crazy...
assert(found[len] == ' ' || found[len] == 0);
return true;
}
/**
* @brief Release binding of a texture.
*/
@ -284,7 +265,7 @@ static void *glx_init(session_t *ps) {
}
// Ensure GLX_EXT_texture_from_pixmap exists
if (!glx_has_extension(ps, "GLX_EXT_texture_from_pixmap"))
if (!glx_has_extension(ps->dpy, ps->scr, "GLX_EXT_texture_from_pixmap"))
goto end;
// Initialize GLX data structure
@ -443,7 +424,8 @@ static void *glx_prepare_win(void *backend_data, session_t *ps, win *w) {
0,
};
wd->texture.target = (GLX_TEXTURE_2D_EXT == tex_tgt ? GL_TEXTURE_2D : GL_TEXTURE_RECTANGLE);
wd->texture.target =
(GLX_TEXTURE_2D_EXT == tex_tgt ? GL_TEXTURE_2D : GL_TEXTURE_RECTANGLE);
wd->texture.y_inverted = fbcfg->y_inverted;
wd->glpixmap = glXCreatePixmap(ps->dpy, fbcfg->cfg, wd->pixmap, attrs);

34
src/backend/gl/glx.h
View File

@ -63,3 +63,37 @@ x_visual_to_fbconfig_criteria(xcb_connection_t *c, xcb_visualid_t visual) {
.visual_depth = depth,
};
}
/**
* Check if a GLX extension exists.
*/
static inline bool glx_has_extension(Display *dpy, int screen, const char *ext) {
const char *glx_exts = glXQueryExtensionsString(dpy, screen);
if (!glx_exts) {
log_error("Failed get GLX extension list.");
return false;
}
long inlen = strlen(ext);
const char *curr = glx_exts;
bool match = false;
while (curr && !match) {
const char *end = strchr(curr, ' ');
if (!end) {
// Last extension string
match = strcmp(ext, curr) == 0;
} else if (end - curr == inlen) {
// Length match, do match string
match = strncmp(ext, curr, end - curr) == 0;
}
curr = end ? end + 1 : NULL;
}
if (!match) {
log_info("Missing GLX extension %s.", ext);
} else {
log_info("Found GLX extension %s.", ext);
}
return match;
}