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Diffstat (limited to 'pugl/pugl_x11.c')
-rw-r--r--pugl/pugl_x11.c173
1 files changed, 110 insertions, 63 deletions
diff --git a/pugl/pugl_x11.c b/pugl/pugl_x11.c
index e29e3bd..509e527 100644
--- a/pugl/pugl_x11.c
+++ b/pugl/pugl_x11.c
@@ -24,46 +24,34 @@
#include <stdlib.h>
#include <string.h>
-#include <GL/gl.h>
-#include <GL/glx.h>
#include <X11/Xatom.h>
#include <X11/Xlib.h>
+#include <X11/Xutil.h>
#include <X11/keysym.h>
+#ifdef PUGL_HAVE_GL
+#include <GL/gl.h>
+#include <GL/glx.h>
+#endif
+
+#ifdef PUGL_HAVE_CAIRO
+#include <cairo/cairo.h>
+#include <cairo/cairo-xlib.h>
+#endif
+
#include "pugl_internal.h"
struct PuglInternalsImpl {
Display* display;
int screen;
Window win;
+#ifdef PUGL_HAVE_CAIRO
+ cairo_t* cr;
+#endif
+#ifdef PUGL_HAVE_GL
GLXContext ctx;
Bool doubleBuffered;
-};
-
-/**
- Attributes for single-buffered RGBA with at least
- 4 bits per color and a 16 bit depth buffer.
-*/
-static int attrListSgl[] = {
- GLX_RGBA,
- GLX_RED_SIZE, 4,
- GLX_GREEN_SIZE, 4,
- GLX_BLUE_SIZE, 4,
- GLX_DEPTH_SIZE, 16,
- None
-};
-
-/**
- Attributes for double-buffered RGBA with at least
- 4 bits per color and a 16 bit depth buffer.
-*/
-static int attrListDbl[] = {
- GLX_RGBA, GLX_DOUBLEBUFFER,
- GLX_RED_SIZE, 4,
- GLX_GREEN_SIZE, 4,
- GLX_BLUE_SIZE, 4,
- GLX_DEPTH_SIZE, 16,
- None
+#endif
};
PuglInternals*
@@ -80,21 +68,49 @@ puglCreateWindow(PuglView* view, const char* title)
impl->display = XOpenDisplay(0);
impl->screen = DefaultScreen(impl->display);
- XVisualInfo* vi = glXChooseVisual(impl->display, impl->screen, attrListDbl);
- if (!vi) {
- vi = glXChooseVisual(impl->display, impl->screen, attrListSgl);
- impl->doubleBuffered = False;
- PUGL_LOG("no double-buffering available, using single-buffering\n");
- } else {
- impl->doubleBuffered = True;
- PUGL_LOG("using double-buffered rendering\n");
+ XVisualInfo* vi = NULL;
+
+#ifdef PUGL_HAVE_GL
+ if (view->ctx_type == PUGL_GL) {
+ // Try to create double-buffered visual
+ int double_attrs[] = { GLX_RGBA, GLX_DOUBLEBUFFER,
+ GLX_RED_SIZE, 4,
+ GLX_GREEN_SIZE, 4,
+ GLX_BLUE_SIZE, 4,
+ GLX_DEPTH_SIZE, 16,
+ None };
+ vi = glXChooseVisual(impl->display, impl->screen, double_attrs);
+ if (!vi) {
+ // Failed, create single-buffered visual
+ int single_attrs[] = { GLX_RGBA,
+ GLX_RED_SIZE, 4,
+ GLX_GREEN_SIZE, 4,
+ GLX_BLUE_SIZE, 4,
+ GLX_DEPTH_SIZE, 16,
+ None };
+ vi = glXChooseVisual(impl->display, impl->screen, single_attrs);
+ impl->doubleBuffered = False;
+ } else {
+ impl->doubleBuffered = True;
+ }
+
+ impl->ctx = glXCreateContext(impl->display, vi, 0, GL_TRUE);
+ PUGL_LOGF("GLX depth %d, %s-buffered, %s\n",
+ vi->depth,
+ impl->doubleBuffered ? "double" : "single",
+ (glXIsDirect(impl->display, impl->ctx)
+ ? "direct (set LIBGL_ALWAYS_INDIRECT=1 to disable)"
+ : "indirect"));
}
-
- int glxMajor, glxMinor;
- glXQueryVersion(impl->display, &glxMajor, &glxMinor);
- PUGL_LOGF("GLX Version %d.%d\n", glxMajor, glxMinor);
-
- impl->ctx = glXCreateContext(impl->display, vi, 0, GL_TRUE);
+#endif
+#ifdef PUGL_HAVE_CAIRO
+ if (view->ctx_type == PUGL_CAIRO) {
+ XVisualInfo pat;
+ int n;
+ pat.screen = impl->screen;
+ vi = XGetVisualInfo(impl->display, VisualScreenMask, &pat, &n);
+ }
+#endif
Window xParent = view->parent
? (Window)view->parent
@@ -105,10 +121,10 @@ puglCreateWindow(PuglView* view, const char* title)
XSetWindowAttributes attr;
memset(&attr, 0, sizeof(XSetWindowAttributes));
- attr.colormap = cmap;
- attr.border_pixel = 0;
-
- attr.event_mask = ExposureMask | KeyPressMask | KeyReleaseMask
+ attr.background_pixel = BlackPixel(impl->display, impl->screen);
+ attr.border_pixel = BlackPixel(impl->display, impl->screen);
+ attr.colormap = cmap;
+ attr.event_mask = ExposureMask | KeyPressMask | KeyReleaseMask
| ButtonPressMask | ButtonReleaseMask
#ifdef PUGL_GRAB_FOCUS
| EnterWindowMask
@@ -118,7 +134,17 @@ puglCreateWindow(PuglView* view, const char* title)
impl->win = XCreateWindow(
impl->display, xParent,
0, 0, view->width, view->height, 0, vi->depth, InputOutput, vi->visual,
- CWBorderPixel | CWColormap | CWEventMask, &attr);
+ CWBackPixel | CWBorderPixel | CWColormap | CWEventMask, &attr);
+
+#ifdef PUGL_HAVE_CAIRO
+ if (view->ctx_type == PUGL_CAIRO) {
+ cairo_surface_t* surface = cairo_xlib_surface_create(
+ impl->display, impl->win, vi->visual, view->width, view->height);
+ if (!(impl->cr = cairo_create(surface))) {
+ fprintf(stderr, "failed to create cairo context\n");
+ }
+ }
+#endif
XSizeHints sizeHints;
memset(&sizeHints, 0, sizeof(sizeHints));
@@ -140,12 +166,6 @@ puglCreateWindow(PuglView* view, const char* title)
XSetWMProtocols(impl->display, impl->win, &wmDelete, 1);
}
- if (glXIsDirect(impl->display, impl->ctx)) {
- PUGL_LOG("DRI enabled (set LIBGL_ALWAYS_INDIRECT=1 to disable)\n");
- } else {
- PUGL_LOG("no DRI available\n");
- }
-
XFree(vi);
return 0;
@@ -174,7 +194,12 @@ puglDestroy(PuglView* view)
return;
}
- glXDestroyContext(view->impl->display, view->impl->ctx);
+#ifdef PUGL_HAVE_GL
+ if (view->ctx_type == PUGL_GL) {
+ glXDestroyContext(view->impl->display, view->impl->ctx);
+ }
+#endif
+
XDestroyWindow(view->impl->display, view->impl->win);
XCloseDisplay(view->impl->display);
free(view->impl);
@@ -184,7 +209,11 @@ puglDestroy(PuglView* view)
static void
puglReshape(PuglView* view, int width, int height)
{
- glXMakeCurrent(view->impl->display, view->impl->win, view->impl->ctx);
+#ifdef PUGL_HAVE_GL
+ if (view->ctx_type == PUGL_GL) {
+ glXMakeCurrent(view->impl->display, view->impl->win, view->impl->ctx);
+ }
+#endif
if (view->reshapeFunc) {
view->reshapeFunc(view, width, height);
@@ -199,20 +228,27 @@ puglReshape(PuglView* view, int width, int height)
static void
puglDisplay(PuglView* view)
{
- glXMakeCurrent(view->impl->display, view->impl->win, view->impl->ctx);
- glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
- glLoadIdentity();
+#ifdef PUGL_HAVE_GL
+ if (view->ctx_type == PUGL_GL) {
+ glXMakeCurrent(view->impl->display, view->impl->win, view->impl->ctx);
+ glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+ glLoadIdentity();
+ }
+#endif
if (view->displayFunc) {
view->displayFunc(view);
}
+ view->redisplay = false;
- glFlush();
- if (view->impl->doubleBuffered) {
- glXSwapBuffers(view->impl->display, view->impl->win);
+#ifdef PUGL_HAVE_GL
+ if (view->ctx_type == PUGL_GL) {
+ glFlush();
+ if (view->impl->doubleBuffered) {
+ glXSwapBuffers(view->impl->display, view->impl->win);
+ }
}
-
- view->redisplay = false;
+#endif
}
static PuglKey
@@ -402,3 +438,14 @@ puglGetNativeWindow(PuglView* view)
{
return view->impl->win;
}
+
+void*
+puglGetContext(PuglView* view)
+{
+#ifdef PUGL_HAVE_CAIRO
+ if (view->ctx_type == PUGL_CAIRO) {
+ return view->impl->cr;
+ }
+#endif
+ return NULL;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-20 03:35:17 +0000