- Add experimental OpenGL backend (--opengl). --blur-background is currently not possible with this backend, because I'm still trying to find a proper way to do blur with OpenGL. Flipping backend on-the-fly is really hard, so it isn't supported right now. No configuration file option exists to enable this, because it isn't stable enough. - Add `opengl-swc` VSync method that uses SGI_swap_control to control buffer swap, with OpenGL backend. (#7) - Fix a potential read-from-freed-memory issue in paint_all(). - Correctly reattach GLX context after fork. - Dump error text in error(). Add GLX error code handling. - Code clean-up. - Known issues: Region operations take a lot of time in glx_render(). I'm hesitating about what to do.pull/2/head
Richard Grenville
11 years ago
parent
690589bb34
commit
f9f1e1f228
@ -0,0 +1,521 @@
|
||||
/*
|
||||
* Compton - a compositor for X11
|
||||
*
|
||||
* Based on `xcompmgr` - Copyright (c) 2003, Keith Packard
|
||||
*
|
||||
* Copyright (c) 2011-2013, Christopher Jeffrey
|
||||
* See LICENSE for more information.
|
||||
*
|
||||
*/
|
||||
|
||||
#include "opengl.h"
|
||||
|
||||
/**
|
||||
* Initialize OpenGL.
|
||||
*/
|
||||
bool
|
||||
glx_init(session_t *ps, bool need_render) {
|
||||
bool success = false;
|
||||
XVisualInfo *pvis = NULL;
|
||||
|
||||
// Check for GLX extension
|
||||
if (!ps->glx_exists) {
|
||||
if (glXQueryExtension(ps->dpy, &ps->glx_event, &ps->glx_error))
|
||||
ps->glx_exists = true;
|
||||
else {
|
||||
printf_errf("(): No GLX extension.");
|
||||
goto glx_init_end;
|
||||
}
|
||||
}
|
||||
|
||||
// Get XVisualInfo
|
||||
pvis = get_visualinfo_from_visual(ps, ps->vis);
|
||||
if (!pvis) {
|
||||
printf_errf("(): Failed to acquire XVisualInfo for current visual.");
|
||||
goto glx_init_end;
|
||||
}
|
||||
|
||||
// Ensure the visual is double-buffered
|
||||
if (need_render) {
|
||||
int value = 0;
|
||||
if (Success != glXGetConfig(ps->dpy, pvis, GLX_USE_GL, &value) || !value) {
|
||||
printf_errf("(): Root visual is not a GL visual.");
|
||||
goto glx_init_end;
|
||||
}
|
||||
|
||||
if (Success != glXGetConfig(ps->dpy, pvis, GLX_DOUBLEBUFFER, &value)
|
||||
|| !value) {
|
||||
printf_errf("(): Root visual is not a double buffered GL visual.");
|
||||
goto glx_init_end;
|
||||
}
|
||||
}
|
||||
|
||||
// Ensure GLX_EXT_texture_from_pixmap exists
|
||||
if (need_render && !glx_hasext(ps, "GLX_EXT_texture_from_pixmap"))
|
||||
goto glx_init_end;
|
||||
|
||||
// Get GLX context
|
||||
ps->glx_context = glXCreateContext(ps->dpy, pvis, None, GL_TRUE);
|
||||
|
||||
if (!ps->glx_context) {
|
||||
printf_errf("(): Failed to get GLX context.");
|
||||
goto glx_init_end;
|
||||
}
|
||||
|
||||
// Attach GLX context
|
||||
if (!glXMakeCurrent(ps->dpy, get_tgt_window(ps), ps->glx_context)) {
|
||||
printf_errf("(): Failed to attach GLX context.");
|
||||
goto glx_init_end;
|
||||
}
|
||||
|
||||
// Acquire function addresses
|
||||
if (need_render) {
|
||||
ps->glXBindTexImageProc = (f_BindTexImageEXT)
|
||||
glXGetProcAddress((const GLubyte *) "glXBindTexImageEXT");
|
||||
ps->glXReleaseTexImageProc = (f_ReleaseTexImageEXT)
|
||||
glXGetProcAddress((const GLubyte *) "glXReleaseTexImageEXT");
|
||||
if (!ps->glXBindTexImageProc || !ps->glXReleaseTexImageProc) {
|
||||
printf_errf("(): Failed to acquire glXBindTexImageEXT() / glXReleaseTexImageEXT().");
|
||||
goto glx_init_end;
|
||||
}
|
||||
}
|
||||
|
||||
// Acquire FBConfigs
|
||||
if (need_render && !glx_update_fbconfig(ps))
|
||||
goto glx_init_end;
|
||||
|
||||
if (need_render) {
|
||||
// Adjust viewport
|
||||
glViewport(0, 0, ps->root_width, ps->root_height);
|
||||
|
||||
// Initialize settings, copied from dcompmgr
|
||||
glMatrixMode(GL_PROJECTION);
|
||||
glLoadIdentity();
|
||||
glOrtho(0, ps->root_width, ps->root_height, 0, -100.0, 100.0);
|
||||
glMatrixMode(GL_MODELVIEW);
|
||||
glLoadIdentity();
|
||||
// glEnable(GL_DEPTH_TEST);
|
||||
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
|
||||
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
|
||||
glDisable(GL_BLEND);
|
||||
|
||||
// Clear screen
|
||||
glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
|
||||
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
||||
glXSwapBuffers(ps->dpy, get_tgt_window(ps));
|
||||
}
|
||||
|
||||
success = true;
|
||||
|
||||
glx_init_end:
|
||||
if (pvis)
|
||||
XFree(pvis);
|
||||
|
||||
if (!success)
|
||||
glx_destroy(ps);
|
||||
|
||||
return success;
|
||||
}
|
||||
|
||||
/**
|
||||
* Destroy GLX related resources.
|
||||
*/
|
||||
void
|
||||
glx_destroy(session_t *ps) {
|
||||
// Free FBConfigs
|
||||
for (int i = 0; i <= OPENGL_MAX_DEPTH; ++i) {
|
||||
free(ps->glx_fbconfigs[i]);
|
||||
ps->glx_fbconfigs[i] = NULL;
|
||||
}
|
||||
|
||||
// Destroy GLX context
|
||||
if (ps->glx_context) {
|
||||
glXDestroyContext(ps->dpy, ps->glx_context);
|
||||
ps->glx_context = NULL;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Callback to run on root window size change.
|
||||
*/
|
||||
void
|
||||
glx_on_root_change(session_t *ps) {
|
||||
glViewport(0, 0, ps->root_width, ps->root_height);
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Update the FBConfig of given depth.
|
||||
*/
|
||||
static inline void
|
||||
glx_update_fbconfig_bydepth(session_t *ps, int depth, glx_fbconfig_t *pfbcfg) {
|
||||
// Make sure the depth is sane
|
||||
if (depth < 0 || depth > OPENGL_MAX_DEPTH)
|
||||
return;
|
||||
|
||||
// Compare new FBConfig with current one
|
||||
if (glx_cmp_fbconfig(ps, ps->glx_fbconfigs[depth], pfbcfg) < 0) {
|
||||
#ifdef DEBUG_GLX
|
||||
printf_dbgf("(%d): %#x overrides %#x, target %#x.\n", depth, (unsigned) pfbcfg->cfg, (ps->glx_fbconfigs[depth] ? (unsigned) ps->glx_fbconfigs[depth]->cfg: 0), pfbcfg->texture_tgts);
|
||||
#endif
|
||||
if (!ps->glx_fbconfigs[depth]) {
|
||||
ps->glx_fbconfigs[depth] = malloc(sizeof(glx_fbconfig_t));
|
||||
allocchk(ps->glx_fbconfigs[depth]);
|
||||
}
|
||||
(*ps->glx_fbconfigs[depth]) = *pfbcfg;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Get GLX FBConfigs for all depths.
|
||||
*/
|
||||
static bool
|
||||
glx_update_fbconfig(session_t *ps) {
|
||||
// Acquire all FBConfigs and loop through them
|
||||
int nele = 0;
|
||||
GLXFBConfig* pfbcfgs = glXGetFBConfigs(ps->dpy, ps->scr, &nele);
|
||||
|
||||
for (GLXFBConfig *pcur = pfbcfgs; pcur < pfbcfgs + nele; pcur++) {
|
||||
glx_fbconfig_t fbinfo = {
|
||||
.cfg = *pcur,
|
||||
.texture_fmt = 0,
|
||||
.texture_tgts = 0,
|
||||
.y_inverted = false,
|
||||
};
|
||||
int depth = 0, depth_alpha = 0, val = 0;
|
||||
|
||||
if (Success != glXGetFBConfigAttrib(ps->dpy, *pcur, GLX_BUFFER_SIZE, &depth)
|
||||
|| Success != glXGetFBConfigAttrib(ps->dpy, *pcur, GLX_ALPHA_SIZE, &depth_alpha)) {
|
||||
printf_errf("(): Failed to retrieve buffer size and alpha size of FBConfig %d.", (int) (pcur - pfbcfgs));
|
||||
continue;
|
||||
}
|
||||
if (Success != glXGetFBConfigAttrib(ps->dpy, *pcur, GLX_BIND_TO_TEXTURE_TARGETS_EXT, &fbinfo.texture_tgts)) {
|
||||
printf_errf("(): Failed to retrieve BIND_TO_TEXTURE_TARGETS_EXT of FBConfig %d.", (int) (pcur - pfbcfgs));
|
||||
continue;
|
||||
}
|
||||
|
||||
bool rgb = false;
|
||||
bool rgba = false;
|
||||
|
||||
if (depth >= 32 && depth_alpha && Success == glXGetFBConfigAttrib(ps->dpy, *pcur, GLX_BIND_TO_TEXTURE_RGBA_EXT, &val) && val)
|
||||
rgba = true;
|
||||
|
||||
if (Success == glXGetFBConfigAttrib(ps->dpy, *pcur, GLX_BIND_TO_TEXTURE_RGB_EXT, &val) && val)
|
||||
rgb = true;
|
||||
|
||||
if (Success == glXGetFBConfigAttrib(ps->dpy, *pcur, GLX_Y_INVERTED_EXT, &val))
|
||||
fbinfo.y_inverted = val;
|
||||
|
||||
if ((depth - depth_alpha) < 32 && rgb) {
|
||||
fbinfo.texture_fmt = GLX_TEXTURE_FORMAT_RGB_EXT;
|
||||
glx_update_fbconfig_bydepth(ps, depth - depth_alpha, &fbinfo);
|
||||
}
|
||||
|
||||
if (rgba) {
|
||||
fbinfo.texture_fmt = GLX_TEXTURE_FORMAT_RGBA_EXT;
|
||||
glx_update_fbconfig_bydepth(ps, depth, &fbinfo);
|
||||
}
|
||||
}
|
||||
|
||||
if (pfbcfgs)
|
||||
XFree(pfbcfgs);
|
||||
|
||||
// Sanity checks
|
||||
if (!ps->glx_fbconfigs[ps->depth]) {
|
||||
printf_errf("(): No FBConfig found for default depth %d.", ps->depth);
|
||||
return false;
|
||||
}
|
||||
|
||||
if (!ps->glx_fbconfigs[32]) {
|
||||
printf_errf("(): No FBConfig found for depth 32. Expect crazy things.");
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
static inline int
|
||||
glx_cmp_fbconfig_cmpattr(session_t *ps,
|
||||
const glx_fbconfig_t *pfbc_a, const glx_fbconfig_t *pfbc_b,
|
||||
int attr) {
|
||||
int attr_a = 0, attr_b = 0;
|
||||
|
||||
// TODO: Error checking
|
||||
glXGetFBConfigAttrib(ps->dpy, pfbc_a->cfg, attr, &attr_a);
|
||||
glXGetFBConfigAttrib(ps->dpy, pfbc_b->cfg, attr, &attr_b);
|
||||
|
||||
return attr_a - attr_b;
|
||||
}
|
||||
|
||||
/**
|
||||
* Compare two GLX FBConfig's to find the preferred one.
|
||||
*/
|
||||
static int
|
||||
glx_cmp_fbconfig(session_t *ps,
|
||||
const glx_fbconfig_t *pfbc_a, const glx_fbconfig_t *pfbc_b) {
|
||||
int result = 0;
|
||||
|
||||
if (!pfbc_a)
|
||||
return -1;
|
||||
if (!pfbc_b)
|
||||
return 1;
|
||||
|
||||
#define P_CMPATTR_LT(attr) { if ((result = glx_cmp_fbconfig_cmpattr(ps, pfbc_a, pfbc_b, (attr)))) return -result; }
|
||||
#define P_CMPATTR_GT(attr) { if ((result = glx_cmp_fbconfig_cmpattr(ps, pfbc_a, pfbc_b, (attr)))) return result; }
|
||||
|
||||
P_CMPATTR_LT(GLX_BIND_TO_TEXTURE_RGBA_EXT);
|
||||
P_CMPATTR_LT(GLX_DOUBLEBUFFER);
|
||||
P_CMPATTR_LT(GLX_STENCIL_SIZE);
|
||||
P_CMPATTR_LT(GLX_DEPTH_SIZE);
|
||||
P_CMPATTR_GT(GLX_BIND_TO_MIPMAP_TEXTURE_EXT);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/**
|
||||
* Bind a X pixmap to an OpenGL texture.
|
||||
*/
|
||||
bool
|
||||
glx_bind_pixmap(session_t *ps, glx_texture_t **pptex, Pixmap pixmap,
|
||||
int width, int height, int depth) {
|
||||
if (depth > OPENGL_MAX_DEPTH) {
|
||||
printf_errf("(%d): Requested depth higher than %d.", depth,
|
||||
OPENGL_MAX_DEPTH);
|
||||
return false;
|
||||
}
|
||||
const glx_fbconfig_t *pcfg = ps->glx_fbconfigs[depth];
|
||||
if (!pcfg) {
|
||||
printf_errf("(%d): Couldn't find FBConfig with requested depth.", depth);
|
||||
return false;
|
||||
}
|
||||
|
||||
const GLenum target = GL_TEXTURE_2D;
|
||||
glx_texture_t *ptex = *pptex;
|
||||
bool need_release = true;
|
||||
|
||||
// Allocate structure
|
||||
if (!ptex) {
|
||||
static const glx_texture_t GLX_TEX_DEF = {
|
||||
.texture = 0,
|
||||
.glpixmap = 0,
|
||||
.pixmap = 0,
|
||||
.width = 0,
|
||||
.height = 0,
|
||||
.depth = 0,
|
||||
.y_inverted = false,
|
||||
};
|
||||
|
||||
ptex = malloc(sizeof(glx_texture_t));
|
||||
allocchk(ptex);
|
||||
memcpy(ptex, &GLX_TEX_DEF, sizeof(glx_texture_t));
|
||||
*pptex = ptex;
|
||||
}
|
||||
|
||||
glEnable(target);
|
||||
|
||||
// Release pixmap if parameters are inconsistent
|
||||
if (ptex->texture && !(width == ptex->width && height == ptex->height
|
||||
&& ptex->pixmap == pixmap && depth == ptex->depth)) {
|
||||
glx_release_pixmap(ps, ptex);
|
||||
}
|
||||
|
||||
// Create texture
|
||||
if (!ptex->texture) {
|
||||
need_release = false;
|
||||
|
||||
GLuint texture = 0;
|
||||
glGenTextures(1, &texture);
|
||||
glBindTexture(target, texture);
|
||||
|
||||
glTexParameteri(target, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
|
||||
glTexParameteri(target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
|
||||
glTexParameteri(target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
|
||||
glTexParameteri(target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
|
||||
|
||||
glBindTexture(target, 0);
|
||||
|
||||
ptex->texture = texture;
|
||||
ptex->y_inverted = pcfg->y_inverted;
|
||||
}
|
||||
if (!ptex->texture) {
|
||||
printf_errf("(): Failed to allocate texture.");
|
||||
return false;
|
||||
}
|
||||
|
||||
glBindTexture(target, ptex->texture);
|
||||
|
||||
// Create GLX pixmap
|
||||
if (!ptex->glpixmap) {
|
||||
need_release = false;
|
||||
|
||||
#ifdef DEBUG_GLX
|
||||
printf_dbgf("(): depth %d rgba %d\n", depth, (GLX_TEXTURE_FORMAT_RGBA_EXT == pcfg->texture_fmt));
|
||||
#endif
|
||||
|
||||
int attrs[] = {
|
||||
GLX_TEXTURE_FORMAT_EXT,
|
||||
pcfg->texture_fmt,
|
||||
// GLX_TEXTURE_TARGET_EXT,
|
||||
// ,
|
||||
0,
|
||||
};
|
||||
|
||||
ptex->glpixmap = glXCreatePixmap(ps->dpy, pcfg->cfg, pixmap, attrs);
|
||||
}
|
||||
if (!ptex->glpixmap) {
|
||||
printf_errf("(): Failed to allocate GLX pixmap.");
|
||||
return false;
|
||||
}
|
||||
|
||||
// The specification requires rebinding whenever the content changes...
|
||||
// We can't follow this, too slow.
|
||||
if (need_release)
|
||||
ps->glXReleaseTexImageProc(ps->dpy, ptex->glpixmap, GLX_FRONT_LEFT_EXT);
|
||||
|
||||
ps->glXBindTexImageProc(ps->dpy, ptex->glpixmap, GLX_FRONT_LEFT_EXT, NULL);
|
||||
|
||||
// Cleanup
|
||||
glBindTexture(target, 0);
|
||||
glDisable(target);
|
||||
|
||||
ptex->width = width;
|
||||
ptex->height = height;
|
||||
ptex->depth = depth;
|
||||
ptex->pixmap = pixmap;
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Release binding of a texture.
|
||||
*/
|
||||
void
|
||||
glx_release_pixmap(session_t *ps, glx_texture_t *ptex) {
|
||||
// Release binding
|
||||
if (ptex->glpixmap && ptex->texture) {
|
||||
glBindTexture(GL_TEXTURE_2D, ptex->texture);
|
||||
ps->glXReleaseTexImageProc(ps->dpy, ptex->glpixmap, GLX_FRONT_LEFT_EXT);
|
||||
glBindTexture(GL_TEXTURE_2D, 0);
|
||||
}
|
||||
|
||||
// Free GLX Pixmap
|
||||
if (ptex->glpixmap) {
|
||||
glXDestroyPixmap(ps->dpy, ptex->glpixmap);
|
||||
ptex->glpixmap = 0;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Render a region with texture data.
|
||||
*/
|
||||
bool
|
||||
glx_render(session_t *ps, const glx_texture_t *ptex,
|
||||
int x, int y, int dx, int dy, int width, int height, int z,
|
||||
double opacity, bool neg, XserverRegion reg_tgt) {
|
||||
if (!ptex || !ptex->texture) {
|
||||
printf_errf("(): Missing texture.");
|
||||
return false;
|
||||
}
|
||||
|
||||
// Enable blending if needed
|
||||
if (opacity < 1.0 || GLX_TEXTURE_FORMAT_RGBA_EXT ==
|
||||
ps->glx_fbconfigs[ptex->depth]->texture_fmt) {
|
||||
glEnable(GL_BLEND);
|
||||
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
|
||||
// Needed for handling opacity of ARGB texture
|
||||
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
|
||||
glColor4f(1.0f, 1.0f, 1.0f, opacity);
|
||||
}
|
||||
|
||||
// Color negation
|
||||
if (neg) {
|
||||
// Simple color negation
|
||||
if (!glIsEnabled(GL_BLEND)) {
|
||||
glEnable(GL_COLOR_LOGIC_OP);
|
||||
glLogicOp(GL_COPY_INVERTED);
|
||||
}
|
||||
// Blending color negation
|
||||
else {
|
||||
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
|
||||
glTexEnvf(GL_TEXTURE_ENV, GL_COMBINE_RGB, GL_REPLACE);
|
||||
glTexEnvf(GL_TEXTURE_ENV, GL_OPERAND0_RGB, GL_ONE_MINUS_SRC_COLOR);
|
||||
}
|
||||
}
|
||||
|
||||
glEnable(GL_TEXTURE_2D);
|
||||
glBindTexture(GL_TEXTURE_2D, ptex->texture);
|
||||
|
||||
glBegin(GL_QUADS);
|
||||
|
||||
{
|
||||
XserverRegion reg_new = None;
|
||||
|
||||
XRectangle rec_all = {
|
||||
.x = dx,
|
||||
.y = dy,
|
||||
.width = width,
|
||||
.height = height
|
||||
};
|
||||
|
||||
XRectangle *rects = &rec_all;
|
||||
int nrects = 1;
|
||||
|
||||
#ifdef DEBUG_GLX
|
||||
printf_dbgf("(): Draw: %d, %d, %d, %d -> %d, %d (%d, %d) z %d \n", x, y, width, height, dx, dy, ptex->width, ptex->height, z);
|
||||
#endif
|
||||
|
||||
if (reg_tgt) {
|
||||
reg_new = XFixesCreateRegion(ps->dpy, &rec_all, 1);
|
||||
XFixesIntersectRegion(ps->dpy, reg_new, reg_new, reg_tgt);
|
||||
|
||||
nrects = 0;
|
||||
rects = XFixesFetchRegion(ps->dpy, reg_new, &nrects);
|
||||
}
|
||||
|
||||
for (int i = 0; i < nrects; ++i) {
|
||||
GLfloat rx = (double) (rects[i].x - dx + x) / ptex->width;
|
||||
GLfloat ry = (double) (rects[i].y - dy + y) / ptex->height;
|
||||
GLfloat rxe = rx + (double) rects[i].width / ptex->width;
|
||||
GLfloat rye = ry + (double) rects[i].height / ptex->height;
|
||||
GLint rdx = rects[i].x;
|
||||
GLint rdy = rects[i].y;
|
||||
GLint rdxe = rdx + rects[i].width;
|
||||
GLint rdye = rdy + rects[i].height;
|
||||
|
||||
// Invert Y if needed, this may not work as expected, though. I don't
|
||||
// have such a FBConfig to test with.
|
||||
if (!ptex->y_inverted) {
|
||||
ry = 1.0 - ry;
|
||||
rye = 1.0 - rye;
|
||||
}
|
||||
|
||||
#ifdef DEBUG_GLX
|
||||
printf_dbgf("(): Rect %d: %f, %f, %f, %f -> %d, %d, %d, %d\n", i, rx, ry, rxe, rye, rdx, rdy, rdxe, rdye);
|
||||
#endif
|
||||
|
||||
glTexCoord2f(rx, ry);
|
||||
glVertex3i(rdx, rdy, z);
|
||||
|
||||
glTexCoord2f(rxe, ry);
|
||||
glVertex3i(rdxe, rdy, z);
|
||||
|
||||
glTexCoord2f(rxe, rye);
|
||||
glVertex3i(rdxe, rdye, z);
|
||||
|
||||
glTexCoord2f(rx, rye);
|
||||
glVertex3i(rdx, rdye, z);
|
||||
}
|
||||
|
||||
if (rects && rects != &rec_all)
|
||||
XFree(rects);
|
||||
free_region(ps, ®_new);
|
||||
}
|
||||
glEnd();
|
||||
|
||||
// Cleanup
|
||||
glBindTexture(GL_TEXTURE_2D, 0);
|
||||
glColor4f(0.0f, 0.0f, 0.0f, 0.0f);
|
||||
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
|
||||
glDisable(GL_BLEND);
|
||||
glDisable(GL_COLOR_LOGIC_OP);
|
||||
|
||||
return true;
|
||||
}
|
||||
@ -0,0 +1,46 @@
|
||||
/*
|
||||
* Compton - a compositor for X11
|
||||
*
|
||||
* Based on `xcompmgr` - Copyright (c) 2003, Keith Packard
|
||||
*
|
||||
* Copyright (c) 2011-2013, Christopher Jeffrey
|
||||
* See LICENSE for more information.
|
||||
*
|
||||
*/
|
||||
|
||||
#include "common.h"
|
||||
|
||||
#include <ctype.h>
|
||||
|
||||
/**
|
||||
* Check if a GLX extension exists.
|
||||
*/
|
||||
static inline bool
|
||||
glx_hasext(session_t *ps, const char *ext) {
|
||||
const char *glx_exts = glXQueryExtensionsString(ps->dpy, ps->scr);
|
||||
const char *pos = strstr(glx_exts, ext);
|
||||
// Make sure the extension string is matched as a whole word
|
||||
if (!pos
|
||||
|| ((pos - glx_exts) && !isspace(*(pos - 1)))
|
||||
|| (strlen(pos) > strlen(ext) && !isspace(pos[strlen(ext)]))) {
|
||||
printf_errf("(): Missing OpenGL extension %s.", ext);
|
||||
return false;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
static inline XVisualInfo *
|
||||
get_visualinfo_from_visual(session_t *ps, Visual *visual) {
|
||||
XVisualInfo vreq = { .visualid = XVisualIDFromVisual(visual) };
|
||||
int nitems = 0;
|
||||
|
||||
return XGetVisualInfo(ps->dpy, VisualIDMask, &vreq, &nitems);
|
||||
}
|
||||
|
||||
static bool
|
||||
glx_update_fbconfig(session_t *ps);
|
||||
|
||||
static int
|
||||
glx_cmp_fbconfig(session_t *ps,
|
||||
const glx_fbconfig_t *pfbc_a, const glx_fbconfig_t *pfbc_b);
|
||||
Loading…
Reference in new issue