--- /dev/null
+/**************************************************************************
+ *
+ * Copyright 2011 Jose Fonseca
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ **************************************************************************/
+
+#include <assert.h>
+#include <stdlib.h>
+
+#include <iostream>
+
+#include "glproc.hpp"
+#include "glws.hpp"
+
+
+namespace glws {
+
+
+static Display *display = NULL;
+static int screen = 0;
+
+static unsigned glxVersion = 0;
+static const char *extensions = 0;
+static bool has_GLX_ARB_create_context = false;
+
+
+class GlxVisual : public Visual
+{
+public:
+ GLXFBConfig fbconfig;
+ XVisualInfo *visinfo;
+
+ GlxVisual() :
+ fbconfig(0),
+ visinfo(0)
+ {}
+
+ ~GlxVisual() {
+ XFree(visinfo);
+ }
+};
+
+
+static void describeEvent(const XEvent &event) {
+ if (0) {
+ switch (event.type) {
+ case ConfigureNotify:
+ std::cerr << "ConfigureNotify";
+ break;
+ case Expose:
+ std::cerr << "Expose";
+ break;
+ case KeyPress:
+ std::cerr << "KeyPress";
+ break;
+ case MapNotify:
+ std::cerr << "MapNotify";
+ break;
+ case ReparentNotify:
+ std::cerr << "ReparentNotify";
+ break;
+ default:
+ std::cerr << "Event " << event.type;
+ }
+ std::cerr << " " << event.xany.window << "\n";
+ }
+}
+
+class GlxDrawable : public Drawable
+{
+public:
+ Window window;
+
+ GlxDrawable(const Visual *vis, int w, int h) :
+ Drawable(vis, w, h)
+ {
+ XVisualInfo *visinfo = static_cast<const GlxVisual *>(visual)->visinfo;
+
+ Window root = RootWindow(display, screen);
+
+ /* window attributes */
+ XSetWindowAttributes attr;
+ attr.background_pixel = 0;
+ attr.border_pixel = 0;
+ attr.colormap = XCreateColormap(display, root, visinfo->visual, AllocNone);
+ attr.event_mask = StructureNotifyMask;
+
+ unsigned long mask;
+ mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
+
+ int x = 0, y = 0;
+
+ window = XCreateWindow(
+ display, root,
+ x, y, width, height,
+ 0,
+ visinfo->depth,
+ InputOutput,
+ visinfo->visual,
+ mask,
+ &attr);
+
+ XSizeHints sizehints;
+ sizehints.x = x;
+ sizehints.y = y;
+ sizehints.width = width;
+ sizehints.height = height;
+ sizehints.flags = USSize | USPosition;
+ XSetNormalHints(display, window, &sizehints);
+
+ const char *name = "glretrace";
+ XSetStandardProperties(
+ display, window, name, name,
+ None, (char **)NULL, 0, &sizehints);
+
+ glXWaitX();
+ }
+
+ void waitForEvent(int type) {
+ XEvent event;
+ do {
+ XWindowEvent(display, window, StructureNotifyMask, &event);
+ describeEvent(event);
+ } while (event.type != type);
+ }
+
+ ~GlxDrawable() {
+ XDestroyWindow(display, window);
+ }
+
+ void
+ resize(int w, int h) {
+ if (w == width && h == height) {
+ return;
+ }
+
+ glXWaitGL();
+
+ // We need to ensure that pending events are processed here, and XSync
+ // with discard = True guarantees that, but it appears the limited
+ // event processing we do so far is sufficient
+ //XSync(display, True);
+
+ Drawable::resize(w, h);
+
+ XResizeWindow(display, window, w, h);
+
+ // Tell the window manager to respect the requested size
+ XSizeHints size_hints;
+ size_hints.max_width = size_hints.min_width = w;
+ size_hints.max_height = size_hints.min_height = h;
+ size_hints.flags = PMinSize | PMaxSize;
+ XSetWMNormalHints(display, window, &size_hints);
+
+ waitForEvent(ConfigureNotify);
+
+ glXWaitX();
+ }
+
+ void show(void) {
+ if (visible) {
+ return;
+ }
+
+ glXWaitGL();
+
+ XMapWindow(display, window);
+
+ waitForEvent(MapNotify);
+
+ glXWaitX();
+
+ Drawable::show();
+ }
+
+ void swapBuffers(void) {
+ glXSwapBuffers(display, window);
+ }
+};
+
+
+class GlxContext : public Context
+{
+public:
+ GLXContext context;
+
+ GlxContext(const Visual *vis, Profile prof, GLXContext ctx) :
+ Context(vis, prof),
+ context(ctx)
+ {}
+
+ ~GlxContext() {
+ glXDestroyContext(display, context);
+ }
+};
+
+void
+init(void) {
+ display = XOpenDisplay(NULL);
+ if (!display) {
+ std::cerr << "error: unable to open display " << XDisplayName(NULL) << "\n";
+ exit(1);
+ }
+
+ screen = DefaultScreen(display);
+
+ int major = 0, minor = 0;
+ glXQueryVersion(display, &major, &minor);
+ glxVersion = (major << 8) | minor;
+
+ extensions = glXQueryExtensionsString(display, screen);
+ has_GLX_ARB_create_context = checkExtension("GLX_ARB_create_context", extensions);
+}
+
+void
+cleanup(void) {
+ if (display) {
+ XCloseDisplay(display);
+ display = NULL;
+ }
+}
+
+Visual *
+createVisual(bool doubleBuffer, Profile profile) {
+ if (profile != PROFILE_COMPAT &&
+ profile != PROFILE_CORE) {
+ return NULL;
+ }
+
+ GlxVisual *visual = new GlxVisual;
+
+ if (glxVersion >= 0x0103) {
+ Attributes<int> attribs;
+ attribs.add(GLX_DRAWABLE_TYPE, GLX_WINDOW_BIT);
+ attribs.add(GLX_RENDER_TYPE, GLX_RGBA_BIT);
+ attribs.add(GLX_RED_SIZE, 1);
+ attribs.add(GLX_GREEN_SIZE, 1);
+ attribs.add(GLX_BLUE_SIZE, 1);
+ attribs.add(GLX_ALPHA_SIZE, 1);
+ attribs.add(GLX_DOUBLEBUFFER, doubleBuffer ? GL_TRUE : GL_FALSE);
+ attribs.add(GLX_DEPTH_SIZE, 1);
+ attribs.add(GLX_STENCIL_SIZE, 1);
+ attribs.end();
+
+ int num_configs = 0;
+ GLXFBConfig * fbconfigs;
+ fbconfigs = glXChooseFBConfig(display, screen, attribs, &num_configs);
+ assert(num_configs && fbconfigs);
+ visual->fbconfig = fbconfigs[0];
+ assert(visual->fbconfig);
+ visual->visinfo = glXGetVisualFromFBConfig(display, visual->fbconfig);
+ assert(visual->visinfo);
+ } else {
+ Attributes<int> attribs;
+ attribs.add(GLX_RGBA);
+ attribs.add(GLX_RED_SIZE, 1);
+ attribs.add(GLX_GREEN_SIZE, 1);
+ attribs.add(GLX_BLUE_SIZE, 1);
+ attribs.add(GLX_ALPHA_SIZE, 1);
+ if (doubleBuffer) {
+ attribs.add(GLX_DOUBLEBUFFER);
+ }
+ attribs.add(GLX_DEPTH_SIZE, 1);
+ attribs.add(GLX_STENCIL_SIZE, 1);
+ attribs.end();
+
+ visual->visinfo = glXChooseVisual(display, screen, attribs);
+ }
+
+ return visual;
+}
+
+Drawable *
+createDrawable(const Visual *visual, int width, int height)
+{
+ return new GlxDrawable(visual, width, height);
+}
+
+Context *
+createContext(const Visual *_visual, Context *shareContext, Profile profile)
+{
+ const GlxVisual *visual = static_cast<const GlxVisual *>(_visual);
+ GLXContext share_context = NULL;
+ GLXContext context;
+
+ if (shareContext) {
+ share_context = static_cast<GlxContext*>(shareContext)->context;
+ }
+
+ if (glxVersion >= 0x0104 && has_GLX_ARB_create_context) {
+ Attributes<int> attribs;
+
+ attribs.add(GLX_RENDER_TYPE, GLX_RGBA_TYPE);
+ if (debug) {
+ attribs.add(GLX_CONTEXT_FLAGS_ARB, GLX_CONTEXT_DEBUG_BIT_ARB);
+ }
+
+ switch (profile) {
+ case PROFILE_COMPAT:
+ break;
+ case PROFILE_CORE:
+ // XXX: This will invariable return a 3.2 context, when supported.
+ // We probably should have a PROFILE_CORE_XX per version.
+ attribs.add(GLX_CONTEXT_MAJOR_VERSION_ARB, 3);
+ attribs.add(GLX_CONTEXT_MINOR_VERSION_ARB, 2);
+ attribs.add(GLX_CONTEXT_PROFILE_MASK_ARB, GLX_CONTEXT_CORE_PROFILE_BIT_ARB);
+ break;
+ default:
+ return NULL;
+ }
+
+ attribs.end();
+
+ context = glXCreateContextAttribsARB(display, visual->fbconfig, share_context, True, attribs);
+ } else {
+ if (profile != PROFILE_COMPAT) {
+ return NULL;
+ }
+
+ if (glxVersion >= 0x103) {
+ context = glXCreateNewContext(display, visual->fbconfig, GLX_RGBA_TYPE, share_context, True);
+ } else {
+ context = glXCreateContext(display, visual->visinfo, share_context, True);
+ }
+ }
+
+ if (!context) {
+ return NULL;
+ }
+
+ return new GlxContext(visual, profile, context);
+}
+
+bool
+makeCurrent(Drawable *drawable, Context *context)
+{
+ if (!drawable || !context) {
+ return glXMakeCurrent(display, None, NULL);
+ } else {
+ GlxDrawable *glxDrawable = static_cast<GlxDrawable *>(drawable);
+ GlxContext *glxContext = static_cast<GlxContext *>(context);
+
+ return glXMakeCurrent(display, glxDrawable->window, glxContext->context);
+ }
+}
+
+bool
+processEvents(void) {
+ while (XPending(display) > 0) {
+ XEvent event;
+ XNextEvent(display, &event);
+ describeEvent(event);
+ }
+ return true;
+}
+
+
+} /* namespace glws */
projects / apitrace / blobdiff