mesa3d.org (#3263)

* mesa3d.org * deps * modified: projects/mesa3d.org/package.yml * modified: projects/mesa3d.org/package.yml * modified: projects/mesa3d.org/package.yml * deps * modified: projects/mesa3d.org/package.yml * modified: projects/mesa3d.org/package.yml * modified: projects/mesa3d.org/package.yml * mako ok * modified: projects/mesa3d.org/package.yml * wip * wip * wip * wip * MarkupSafe * works * patch is redundant * dri ver * linux args * linux args * Hmm... Linux can't see this library. --------- Co-authored-by: Jacob Heider <jacob@tea.xyz>
2024-11-22 08:25:07 +03:00 · 2023-09-10 22:45:42 +03:00 · 2023-09-10 22:45:42 +03:00 · de0e3f0d86
commit de0e3f0d86
parent fb9f4975c7
3 changed files with 1115 additions and 0 deletions
--- a/projects/mesa3d.org/gl_wrap.h
+++ b/projects/mesa3d.org/gl_wrap.h
@ -0,0 +1,112 @@
+#ifndef GL_WRAP_H
+#define GL_WRAP_H
+
+#ifdef _WIN32
+#include <windows.h>
+#endif
+
+#ifdef __APPLE__
+#  include <OpenGL/gl.h>
+#  include <OpenGL/glu.h>
+#else
+#  include <GL/gl.h>
+#  include <GL/glu.h>
+#endif
+
+#ifndef GLAPIENTRY
+#ifdef _WIN32
+#define GLAPIENTRY __stdcall
+#else
+#define GLAPIENTRY
+#endif
+#endif
+
+
+/*
+ * A few defines used by old apps, part of Linux GL headers, but missing from
+ * Windows.  For new apps, it's better to just use Glad.
+ */
+
+#ifndef GL_RESCALE_NORMAL_EXT
+#define GL_RESCALE_NORMAL_EXT 0x803A
+#endif
+
+#ifndef GL_BGR
+#define GL_BGR 0x80E0
+#endif
+
+#ifndef GL_BGRA
+#define GL_BGRA 0x80E1
+#endif
+
+#ifndef GL_TEXTURE_WRAP_R
+#define GL_TEXTURE_WRAP_R 0x8072
+#endif
+
+#ifndef GL_ARB_multisample
+#define GL_MULTISAMPLE_ARB 0x809D
+#define GL_SAMPLE_BUFFERS_ARB 0x80A8
+#define GL_SAMPLES_ARB 0x80A9
+#endif
+
+#ifndef GL_GENERATE_MIPMAP_SGIS
+#define GL_GENERATE_MIPMAP_SGIS 0x8191
+#endif
+
+#ifndef GL_LIGHT_MODEL_COLOR_CONTROL
+#define GL_LIGHT_MODEL_COLOR_CONTROL 0x81F8
+#endif
+
+#ifndef GL_UNSIGNED_SHORT_5_6_5
+#define GL_UNSIGNED_SHORT_5_6_5 0x8363
+#endif
+#ifndef GL_UNSIGNED_SHORT_5_6_5_REV
+#define GL_UNSIGNED_SHORT_5_6_5_REV 0x8364
+#endif
+
+#ifndef GL_SEPARATE_SPECULAR_COLOR
+#define GL_SEPARATE_SPECULAR_COLOR 0x81FA
+#endif
+
+#ifndef GL_ALIASED_LINE_WIDTH_RANGE
+#define GL_ALIASED_LINE_WIDTH_RANGE 0x846E
+#endif
+
+#ifndef GL_MAX_TEXTURE_LOD_BIAS_EXT
+#define GL_MAX_TEXTURE_LOD_BIAS_EXT 0x84FD
+#endif
+
+#ifndef GL_TEXTURE_FILTER_CONTROL_EXT
+#define GL_TEXTURE_FILTER_CONTROL_EXT 0x8500
+#endif
+
+#ifndef GL_TEXTURE_LOD_BIAS_EXT
+#define GL_TEXTURE_LOD_BIAS_EXT 0x8501
+#endif
+
+#ifndef GL_NORMAL_MAP_EXT
+#define GL_NORMAL_MAP_EXT 0x8511
+#endif
+
+#ifndef GL_EXT_texture_cube_map
+#define GL_TEXTURE_CUBE_MAP_EXT 0x8513
+#define GL_TEXTURE_CUBE_MAP_NEGATIVE_X_EXT 0x8516
+#define GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_EXT 0x8518
+#define GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_EXT 0x851A
+#define GL_TEXTURE_CUBE_MAP_POSITIVE_X_EXT 0x8515
+#define GL_TEXTURE_CUBE_MAP_POSITIVE_Y_EXT 0x8517
+#define GL_TEXTURE_CUBE_MAP_POSITIVE_Z_EXT 0x8519
+#endif
+
+#ifndef GL_COORD_REPLACE_ARB
+#define GL_COORD_REPLACE_ARB 0x8862
+#endif
+
+#ifndef GL_POINT_SPRITE
+#define GL_POINT_SPRITE 0x8861
+#endif
+#ifndef GL_POINT_SPRITE_ARB
+#define GL_POINT_SPRITE_ARB 0x8861
+#endif
+
+#endif /* ! GL_WRAP_H */
--- a/projects/mesa3d.org/glxgears.c
+++ b/projects/mesa3d.org/glxgears.c
@ -0,0 +1,886 @@
+/*
+ * Copyright (C) 1999-2001  Brian Paul   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
+ * BRIAN PAUL 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.
+ */
+
+/*
+ * This is a port of the infamous "gears" demo to straight GLX (i.e. no GLUT)
+ * Port by Brian Paul  23 March 2001
+ *
+ * See usage() below for command line options.
+ */
+
+
+#include <math.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <X11/Xatom.h>
+#include <X11/Xlib.h>
+#include <X11/keysym.h>
+#include <GL/gl.h>
+#include <GL/glx.h>
+#include <GL/glxext.h>
+
+#ifndef GLX_MESA_swap_control
+#define GLX_MESA_swap_control 1
+typedef int (*PFNGLXGETSWAPINTERVALMESAPROC)(void);
+#endif
+
+
+#define BENCHMARK
+
+#ifdef BENCHMARK
+
+/* XXX this probably isn't very portable */
+
+#include <sys/time.h>
+#include <unistd.h>
+
+/* return current time (in seconds) */
+static double
+current_time(void)
+{
+   struct timeval tv;
+#ifdef __VMS
+   (void) gettimeofday(&tv, NULL );
+#else
+   struct timezone tz;
+   (void) gettimeofday(&tv, &tz);
+#endif
+   return (double) tv.tv_sec + tv.tv_usec / 1000000.0;
+}
+
+#else /*BENCHMARK*/
+
+/* dummy */
+static double
+current_time(void)
+{
+   /* update this function for other platforms! */
+   static double t = 0.0;
+   static int warn = 1;
+   if (warn) {
+      fprintf(stderr, "Warning: current_time() not implemented!!\n");
+      warn = 0;
+   }
+   return t += 1.0;
+}
+
+#endif /*BENCHMARK*/
+
+
+
+#ifndef M_PI
+#define M_PI 3.14159265
+#endif
+
+
+/** Event handler results: */
+#define NOP 0
+#define EXIT 1
+#define DRAW 2
+
+static GLfloat view_rotx = 20.0, view_roty = 30.0, view_rotz = 0.0;
+static GLint gear1, gear2, gear3;
+static GLfloat angle = 0.0;
+
+static GLboolean fullscreen = GL_FALSE;	/* Create a single fullscreen window */
+static GLboolean stereo = GL_FALSE;	/* Enable stereo.  */
+static GLint samples = 0;               /* Choose visual with at least N samples. */
+static GLint swapinterval = 1;          /* Swap interval */
+static GLboolean use_srgb = GL_FALSE;
+static GLboolean animate = GL_TRUE;	/* Animation */
+static GLfloat eyesep = 5.0;		/* Eye separation. */
+static GLfloat fix_point = 40.0;	/* Fixation point distance.  */
+static GLfloat left, right, asp;	/* Stereo frustum params.  */
+
+
+/*
+ *
+ *  Draw a gear wheel.  You'll probably want to call this function when
+ *  building a display list since we do a lot of trig here.
+ * 
+ *  Input:  inner_radius - radius of hole at center
+ *          outer_radius - radius at center of teeth
+ *          width - width of gear
+ *          teeth - number of teeth
+ *          tooth_depth - depth of tooth
+ */
+static void
+gear(GLfloat inner_radius, GLfloat outer_radius, GLfloat width,
+     GLint teeth, GLfloat tooth_depth)
+{
+   GLint i;
+   GLfloat r0, r1, r2;
+   GLfloat angle, da;
+   GLfloat u, v, len;
+
+   r0 = inner_radius;
+   r1 = outer_radius - tooth_depth / 2.0;
+   r2 = outer_radius + tooth_depth / 2.0;
+
+   da = 2.0 * M_PI / teeth / 4.0;
+
+   glShadeModel(GL_FLAT);
+
+   glNormal3f(0.0, 0.0, 1.0);
+
+   /* draw front face */
+   glBegin(GL_QUAD_STRIP);
+   for (i = 0; i <= teeth; i++) {
+      angle = i * 2.0 * M_PI / teeth;
+      glVertex3f(r0 * cos(angle), r0 * sin(angle), width * 0.5);
+      glVertex3f(r1 * cos(angle), r1 * sin(angle), width * 0.5);
+      if (i < teeth) {
+	 glVertex3f(r0 * cos(angle), r0 * sin(angle), width * 0.5);
+	 glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da),
+		    width * 0.5);
+      }
+   }
+   glEnd();
+
+   /* draw front sides of teeth */
+   glBegin(GL_QUADS);
+   da = 2.0 * M_PI / teeth / 4.0;
+   for (i = 0; i < teeth; i++) {
+      angle = i * 2.0 * M_PI / teeth;
+
+      glVertex3f(r1 * cos(angle), r1 * sin(angle), width * 0.5);
+      glVertex3f(r2 * cos(angle + da), r2 * sin(angle + da), width * 0.5);
+      glVertex3f(r2 * cos(angle + 2 * da), r2 * sin(angle + 2 * da),
+		 width * 0.5);
+      glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da),
+		 width * 0.5);
+   }
+   glEnd();
+
+   glNormal3f(0.0, 0.0, -1.0);
+
+   /* draw back face */
+   glBegin(GL_QUAD_STRIP);
+   for (i = 0; i <= teeth; i++) {
+      angle = i * 2.0 * M_PI / teeth;
+      glVertex3f(r1 * cos(angle), r1 * sin(angle), -width * 0.5);
+      glVertex3f(r0 * cos(angle), r0 * sin(angle), -width * 0.5);
+      if (i < teeth) {
+	 glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da),
+		    -width * 0.5);
+	 glVertex3f(r0 * cos(angle), r0 * sin(angle), -width * 0.5);
+      }
+   }
+   glEnd();
+
+   /* draw back sides of teeth */
+   glBegin(GL_QUADS);
+   da = 2.0 * M_PI / teeth / 4.0;
+   for (i = 0; i < teeth; i++) {
+      angle = i * 2.0 * M_PI / teeth;
+
+      glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da),
+		 -width * 0.5);
+      glVertex3f(r2 * cos(angle + 2 * da), r2 * sin(angle + 2 * da),
+		 -width * 0.5);
+      glVertex3f(r2 * cos(angle + da), r2 * sin(angle + da), -width * 0.5);
+      glVertex3f(r1 * cos(angle), r1 * sin(angle), -width * 0.5);
+   }
+   glEnd();
+
+   /* draw outward faces of teeth */
+   glBegin(GL_QUAD_STRIP);
+   for (i = 0; i < teeth; i++) {
+      angle = i * 2.0 * M_PI / teeth;
+
+      glVertex3f(r1 * cos(angle), r1 * sin(angle), width * 0.5);
+      glVertex3f(r1 * cos(angle), r1 * sin(angle), -width * 0.5);
+      u = r2 * cos(angle + da) - r1 * cos(angle);
+      v = r2 * sin(angle + da) - r1 * sin(angle);
+      len = sqrt(u * u + v * v);
+      u /= len;
+      v /= len;
+      glNormal3f(v, -u, 0.0);
+      glVertex3f(r2 * cos(angle + da), r2 * sin(angle + da), width * 0.5);
+      glVertex3f(r2 * cos(angle + da), r2 * sin(angle + da), -width * 0.5);
+      glNormal3f(cos(angle), sin(angle), 0.0);
+      glVertex3f(r2 * cos(angle + 2 * da), r2 * sin(angle + 2 * da),
+		 width * 0.5);
+      glVertex3f(r2 * cos(angle + 2 * da), r2 * sin(angle + 2 * da),
+		 -width * 0.5);
+      u = r1 * cos(angle + 3 * da) - r2 * cos(angle + 2 * da);
+      v = r1 * sin(angle + 3 * da) - r2 * sin(angle + 2 * da);
+      glNormal3f(v, -u, 0.0);
+      glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da),
+		 width * 0.5);
+      glVertex3f(r1 * cos(angle + 3 * da), r1 * sin(angle + 3 * da),
+		 -width * 0.5);
+      glNormal3f(cos(angle), sin(angle), 0.0);
+   }
+
+   glVertex3f(r1 * cos(0), r1 * sin(0), width * 0.5);
+   glVertex3f(r1 * cos(0), r1 * sin(0), -width * 0.5);
+
+   glEnd();
+
+   glShadeModel(GL_SMOOTH);
+
+   /* draw inside radius cylinder */
+   glBegin(GL_QUAD_STRIP);
+   for (i = 0; i <= teeth; i++) {
+      angle = i * 2.0 * M_PI / teeth;
+      glNormal3f(-cos(angle), -sin(angle), 0.0);
+      glVertex3f(r0 * cos(angle), r0 * sin(angle), -width * 0.5);
+      glVertex3f(r0 * cos(angle), r0 * sin(angle), width * 0.5);
+   }
+   glEnd();
+}
+
+
+static void
+draw(void)
+{
+   glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+   glPushMatrix();
+   glRotatef(view_rotx, 1.0, 0.0, 0.0);
+   glRotatef(view_roty, 0.0, 1.0, 0.0);
+   glRotatef(view_rotz, 0.0, 0.0, 1.0);
+
+   glPushMatrix();
+   glTranslatef(-3.0, -2.0, 0.0);
+   glRotatef(angle, 0.0, 0.0, 1.0);
+   glCallList(gear1);
+   glPopMatrix();
+
+   glPushMatrix();
+   glTranslatef(3.1, -2.0, 0.0);
+   glRotatef(-2.0 * angle - 9.0, 0.0, 0.0, 1.0);
+   glCallList(gear2);
+   glPopMatrix();
+
+   glPushMatrix();
+   glTranslatef(-3.1, 4.2, 0.0);
+   glRotatef(-2.0 * angle - 25.0, 0.0, 0.0, 1.0);
+   glCallList(gear3);
+   glPopMatrix();
+
+   glPopMatrix();
+}
+
+
+static void
+draw_gears(void)
+{
+   if (stereo) {
+      /* First left eye.  */
+      glDrawBuffer(GL_BACK_LEFT);
+
+      glMatrixMode(GL_PROJECTION);
+      glLoadIdentity();
+      glFrustum(left, right, -asp, asp, 5.0, 60.0);
+
+      glMatrixMode(GL_MODELVIEW);
+
+      glPushMatrix();
+      glTranslated(+0.5 * eyesep, 0.0, 0.0);
+      draw();
+      glPopMatrix();
+
+      /* Then right eye.  */
+      glDrawBuffer(GL_BACK_RIGHT);
+
+      glMatrixMode(GL_PROJECTION);
+      glLoadIdentity();
+      glFrustum(-right, -left, -asp, asp, 5.0, 60.0);
+
+      glMatrixMode(GL_MODELVIEW);
+
+      glPushMatrix();
+      glTranslated(-0.5 * eyesep, 0.0, 0.0);
+      draw();
+      glPopMatrix();
+   }
+   else {
+      draw();
+   }
+}
+
+
+/** Draw single frame, do SwapBuffers, compute FPS */
+static void
+draw_frame(Display *dpy, Window win)
+{
+   static int frames = 0;
+   static double tRot0 = -1.0, tRate0 = -1.0;
+   double dt, t = current_time();
+
+   if (tRot0 < 0.0)
+      tRot0 = t;
+   dt = t - tRot0;
+   tRot0 = t;
+
+   if (animate) {
+      /* advance rotation for next frame */
+      angle += 70.0 * dt;  /* 70 degrees per second */
+      if (angle > 3600.0)
+         angle -= 3600.0;
+   }
+
+   draw_gears();
+   glXSwapBuffers(dpy, win);
+
+   frames++;
+   
+   if (tRate0 < 0.0)
+      tRate0 = t;
+   if (t - tRate0 >= 5.0) {
+      GLfloat seconds = t - tRate0;
+      GLfloat fps = frames / seconds;
+      printf("%d frames in %3.1f seconds = %6.3f FPS\n", frames, seconds,
+             fps);
+      fflush(stdout);
+      tRate0 = t;
+      frames = 0;
+   }
+}
+
+
+/* new window size or exposure */
+static void
+reshape(int width, int height)
+{
+   glViewport(0, 0, (GLint) width, (GLint) height);
+
+   if (stereo) {
+      GLfloat w;
+
+      asp = (GLfloat) height / (GLfloat) width;
+      w = fix_point * (1.0 / 5.0);
+
+      left = -5.0 * ((w - 0.5 * eyesep) / fix_point);
+      right = 5.0 * ((w + 0.5 * eyesep) / fix_point);
+   }
+   else {
+      GLfloat h = (GLfloat) height / (GLfloat) width;
+
+      glMatrixMode(GL_PROJECTION);
+      glLoadIdentity();
+      glFrustum(-1.0, 1.0, -h, h, 5.0, 60.0);
+   }
+   
+   glMatrixMode(GL_MODELVIEW);
+   glLoadIdentity();
+   glTranslatef(0.0, 0.0, -40.0);
+}
+   
+
+static GLfloat
+srgb_to_linear(GLfloat c)
+{
+   if (c <= 0.04045f)
+      return c / 12.92f;
+   return powf((c + 0.055f) / 1.055f, 2.4f);
+}
+
+static void
+init(void)
+{
+   static GLfloat pos[4] = { 5.0, 5.0, 10.0, 0.0 };
+   static GLfloat red[4] = { 0.8, 0.1, 0.0, 1.0 };
+   static GLfloat green[4] = { 0.0, 0.8, 0.2, 1.0 };
+   static GLfloat blue[4] = { 0.2, 0.2, 1.0, 1.0 };
+   int i;
+
+   glLightfv(GL_LIGHT0, GL_POSITION, pos);
+   glEnable(GL_CULL_FACE);
+   glEnable(GL_LIGHTING);
+   glEnable(GL_LIGHT0);
+   glEnable(GL_DEPTH_TEST);
+   if (use_srgb) {
+      for (i = 0; i < 3; ++i) {
+         red[i] = srgb_to_linear(red[i]);
+         green[i] = srgb_to_linear(green[i]);
+         blue[i] = srgb_to_linear(blue[i]);
+      }
+      glEnable(GL_FRAMEBUFFER_SRGB);
+   }
+
+   /* make the gears */
+   gear1 = glGenLists(1);
+   glNewList(gear1, GL_COMPILE);
+   glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, red);
+   gear(1.0, 4.0, 1.0, 20, 0.7);
+   glEndList();
+
+   gear2 = glGenLists(1);
+   glNewList(gear2, GL_COMPILE);
+   glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, green);
+   gear(0.5, 2.0, 2.0, 10, 0.7);
+   glEndList();
+
+   gear3 = glGenLists(1);
+   glNewList(gear3, GL_COMPILE);
+   glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, blue);
+   gear(1.3, 2.0, 0.5, 10, 0.7);
+   glEndList();
+
+   glEnable(GL_NORMALIZE);
+}
+
+
+/**
+ * Remove window border/decorations.
+ */
+static void
+no_border( Display *dpy, Window w)
+{
+   static const unsigned MWM_HINTS_DECORATIONS = (1 << 1);
+   static const int PROP_MOTIF_WM_HINTS_ELEMENTS = 5;
+
+   typedef struct
+   {
+      unsigned long       flags;
+      unsigned long       functions;
+      unsigned long       decorations;
+      long                inputMode;
+      unsigned long       status;
+   } PropMotifWmHints;
+
+   PropMotifWmHints motif_hints;
+   Atom prop, proptype;
+   unsigned long flags = 0;
+
+   /* setup the property */
+   motif_hints.flags = MWM_HINTS_DECORATIONS;
+   motif_hints.decorations = flags;
+
+   /* get the atom for the property */
+   prop = XInternAtom( dpy, "_MOTIF_WM_HINTS", True );
+   if (!prop) {
+      /* something went wrong! */
+      return;
+   }
+
+   /* not sure this is correct, seems to work, XA_WM_HINTS didn't work */
+   proptype = prop;
+
+   XChangeProperty( dpy, w,                         /* display, window */
+                    prop, proptype,                 /* property, type */
+                    32,                             /* format: 32-bit datums */
+                    PropModeReplace,                /* mode */
+                    (unsigned char *) &motif_hints, /* data */
+                    PROP_MOTIF_WM_HINTS_ELEMENTS    /* nelements */
+                  );
+}
+
+static void
+make_fullscreen(Display *dpy, Window w)
+{
+   Atom NET_WM_STATE, NET_WM_STATE_FULLSCREEN;
+
+   NET_WM_STATE = XInternAtom(dpy, "_NET_WM_STATE", False);
+   NET_WM_STATE_FULLSCREEN = XInternAtom(dpy, "_NET_WM_STATE_FULLSCREEN", False);
+   if (NET_WM_STATE == None || NET_WM_STATE_FULLSCREEN == None)
+      return;
+
+   XChangeProperty(dpy, w, NET_WM_STATE,
+		   XA_ATOM, 32, PropModeReplace,
+		   (unsigned char *)&NET_WM_STATE_FULLSCREEN, 1);
+}
+
+/*
+ * Create an RGB, double-buffered window.
+ * Return the window and context handles.
+ */
+static void
+make_window( Display *dpy, const char *name,
+             int x, int y, int width, int height,
+             Window *winRet, GLXContext *ctxRet, VisualID *visRet)
+{
+   int attribs[64];
+   int i = 0;
+
+   int scrnum;
+   XSetWindowAttributes attr;
+   unsigned long mask;
+   Window root;
+   Window win;
+   GLXContext ctx;
+   XVisualInfo *visinfo;
+
+   /* Singleton attributes. */
+   attribs[i++] = GLX_RGBA;
+   attribs[i++] = GLX_DOUBLEBUFFER;
+   if (stereo)
+      attribs[i++] = GLX_STEREO;
+
+   /* Key/value attributes. */
+   attribs[i++] = GLX_RED_SIZE;
+   attribs[i++] = 1;
+   attribs[i++] = GLX_GREEN_SIZE;
+   attribs[i++] = 1;
+   attribs[i++] = GLX_BLUE_SIZE;
+   attribs[i++] = 1;
+   attribs[i++] = GLX_DEPTH_SIZE;
+   attribs[i++] = 1;
+   if (use_srgb) {
+      attribs[i++] = GLX_FRAMEBUFFER_SRGB_CAPABLE_EXT;
+      attribs[i++] = 1;
+   }
+   if (samples > 0) {
+      attribs[i++] = GLX_SAMPLE_BUFFERS;
+      attribs[i++] = 1;
+      attribs[i++] = GLX_SAMPLES;
+      attribs[i++] = samples;
+   }
+
+   attribs[i++] = None;
+
+   scrnum = DefaultScreen( dpy );
+   root = RootWindow( dpy, scrnum );
+
+   visinfo = glXChooseVisual(dpy, scrnum, attribs);
+   if (!visinfo) {
+      printf("Error: couldn't get an RGB, Double-buffered");
+      if (stereo)
+         printf(", Stereo");
+      if (samples > 0)
+         printf(", Multisample");
+      if (use_srgb)
+         printf(", sRGB");
+      printf(" visual\n");
+      exit(1);
+   }
+
+   /* window attributes */
+   attr.background_pixel = 0;
+   attr.border_pixel = 0;
+   attr.colormap = XCreateColormap( dpy, root, visinfo->visual, AllocNone);
+   attr.event_mask = StructureNotifyMask | ExposureMask | KeyPressMask;
+   /* XXX this is a bad way to get a borderless window! */
+   mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
+
+   win = XCreateWindow( dpy, root, x, y, width, height,
+		        0, visinfo->depth, InputOutput,
+		        visinfo->visual, mask, &attr );
+
+   if (fullscreen) {
+      no_border(dpy, win);
+      make_fullscreen(dpy, win);
+   }
+
+   /* set hints and properties */
+   {
+      XSizeHints sizehints;
+      sizehints.x = x;
+      sizehints.y = y;
+      sizehints.width  = width;
+      sizehints.height = height;
+      sizehints.flags = USSize | USPosition;
+      XSetNormalHints(dpy, win, &sizehints);
+      XSetStandardProperties(dpy, win, name, name,
+                              None, (char **)NULL, 0, &sizehints);
+   }
+
+   ctx = glXCreateContext( dpy, visinfo, NULL, True );
+   if (!ctx) {
+      printf("Error: glXCreateContext failed\n");
+      exit(1);
+   }
+
+   *winRet = win;
+   *ctxRet = ctx;
+   *visRet = visinfo->visualid;
+
+   XFree(visinfo);
+}
+
+
+/**
+ * Determine whether or not a GLX extension is supported.
+ */
+static int
+is_glx_extension_supported(Display *dpy, const char *query)
+{
+   const int scrnum = DefaultScreen(dpy);
+   const char *glx_extensions = NULL;
+   const size_t len = strlen(query);
+   const char *ptr;
+
+   if (glx_extensions == NULL) {
+      glx_extensions = glXQueryExtensionsString(dpy, scrnum);
+   }
+
+   ptr = strstr(glx_extensions, query);
+   return ((ptr != NULL) && ((ptr[len] == ' ') || (ptr[len] == '\0')));
+}
+
+
+/**
+ * Attempt to determine whether or not the display is synched to vblank.
+ */
+static void
+setup_vsync(Display *dpy, GLXDrawable drawable)
+{
+   int interval = 0;
+
+   if (!is_glx_extension_supported(dpy, "GLX_EXT_swap_control_tear") &&
+       swapinterval < 0) {
+      printf("GLX_EXT_swap_control_tear not supported, disabling\n");
+      swapinterval = -swapinterval;
+   }
+
+#if defined(GLX_EXT_swap_control)
+   if (is_glx_extension_supported(dpy, "GLX_EXT_swap_control")) {
+       unsigned int tmp = -1;
+
+       if (swapinterval != 1) {
+          PFNGLXSWAPINTERVALEXTPROC pglXSwapIntervalEXT =
+             (PFNGLXSWAPINTERVALEXTPROC)
+             glXGetProcAddressARB((const GLubyte *) "glXSwapIntervalEXT");
+          pglXSwapIntervalEXT(dpy, drawable, swapinterval);
+       }
+
+       glXQueryDrawable(dpy, drawable, GLX_SWAP_INTERVAL_EXT, &tmp);
+       interval = tmp;
+   } else
+#endif
+   if (is_glx_extension_supported(dpy, "GLX_MESA_swap_control")) {
+      PFNGLXGETSWAPINTERVALMESAPROC pglXGetSwapIntervalMESA =
+          (PFNGLXGETSWAPINTERVALMESAPROC)
+          glXGetProcAddressARB((const GLubyte *) "glXGetSwapIntervalMESA");
+
+       if (swapinterval != 1) {
+          PFNGLXSWAPINTERVALMESAPROC pglXSwapIntervalMESA =
+             (PFNGLXSWAPINTERVALMESAPROC)
+             glXGetProcAddressARB((const GLubyte *) "glXSwapIntervalMESA");
+          pglXSwapIntervalMESA(swapinterval);
+       }
+
+      interval = (*pglXGetSwapIntervalMESA)();
+   } else if (is_glx_extension_supported(dpy, "GLX_SGI_swap_control")) {
+      /* The default swap interval with this extension is 1.  Assume that it
+       * is set to the default.
+       *
+       * Many Mesa-based drivers default to 0, but all of these drivers also
+       * export GLX_MESA_swap_control.  In that case, this branch will never
+       * be taken, and the correct result should be reported.
+       */
+       if (swapinterval != 1) {
+          PFNGLXSWAPINTERVALSGIPROC pglXSwapIntervalSGI =
+             (PFNGLXSWAPINTERVALSGIPROC)
+             glXGetProcAddressARB((const GLubyte *) "glXSwapIntervalSGI");
+          pglXSwapIntervalSGI(swapinterval);
+       }
+
+      interval = swapinterval;
+   }
+
+   if (interval != 0) {
+      printf("Running synchronized to the vertical refresh.  The framerate should be\n");
+      if (interval == 1) {
+         printf("approximately the same as the monitor refresh rate.\n");
+      } else {
+         printf("approximately 1/%d the monitor refresh rate.\n",
+                abs(interval));
+      }
+   }
+}
+
+/**
+ * Handle one X event.
+ * \return NOP, EXIT or DRAW
+ */
+static int
+handle_event(Display *dpy, Window win, XEvent *event)
+{
+   (void) dpy;
+   (void) win;
+
+   switch (event->type) {
+   case Expose:
+      return DRAW;
+   case ConfigureNotify:
+      reshape(event->xconfigure.width, event->xconfigure.height);
+      break;
+   case KeyPress:
+      {
+         char buffer[10];
+         int code;
+         code = XLookupKeysym(&event->xkey, 0);
+         if (code == XK_Left) {
+            view_roty += 5.0;
+         }
+         else if (code == XK_Right) {
+            view_roty -= 5.0;
+         }
+         else if (code == XK_Up) {
+            view_rotx += 5.0;
+         }
+         else if (code == XK_Down) {
+            view_rotx -= 5.0;
+         }
+         else {
+            XLookupString(&event->xkey, buffer, sizeof(buffer),
+                          NULL, NULL);
+            if (buffer[0] == 27) {
+               /* escape */
+               return EXIT;
+            }
+            else if (buffer[0] == 'a' || buffer[0] == 'A') {
+               animate = !animate;
+            }
+         }
+         return DRAW;
+      }
+   }
+   return NOP;
+}
+
+
+static void
+event_loop(Display *dpy, Window win)
+{
+   while (1) {
+      int op;
+      while (!animate || XPending(dpy) > 0) {
+         XEvent event;
+         XNextEvent(dpy, &event);
+         op = handle_event(dpy, win, &event);
+         if (op == EXIT)
+            return;
+         else if (op == DRAW)
+            break;
+      }
+
+      draw_frame(dpy, win);
+   }
+}
+
+
+static void
+usage(void)
+{
+   printf("Usage:\n");
+   printf("  -display <displayname>  set the display to run on\n");
+   printf("  -srgb                   run in sRGB mode\n");
+   printf("  -stereo                 run in stereo mode\n");
+   printf("  -samples N              run in multisample mode with at least N samples\n");
+   printf("  -swapinterval N         set swap interval to N frames (default 1)\n");
+   printf("  -fullscreen             run in fullscreen mode\n");
+   printf("  -info                   display OpenGL renderer info\n");
+   printf("  -geometry WxH+X+Y       window geometry\n");
+}
+ 
+
+int
+main(int argc, char *argv[])
+{
+   unsigned int winWidth = 300, winHeight = 300;
+   int x = 0, y = 0;
+   Display *dpy;
+   Window win;
+   GLXContext ctx;
+   char *dpyName = NULL;
+   GLboolean printInfo = GL_FALSE;
+   VisualID visId;
+   int i;
+
+   for (i = 1; i < argc; i++) {
+      if (strcmp(argv[i], "-display") == 0) {
+         dpyName = argv[i+1];
+         i++;
+      }
+      else if (strcmp(argv[i], "-info") == 0) {
+         printInfo = GL_TRUE;
+      }
+      else if (strcmp(argv[i], "-srgb") == 0) {
+         use_srgb = GL_TRUE;
+      }
+      else if (strcmp(argv[i], "-stereo") == 0) {
+         stereo = GL_TRUE;
+      }
+      else if (i < argc-1 && strcmp(argv[i], "-samples") == 0) {
+         samples = strtod(argv[i+1], NULL );
+         ++i;
+      }
+      else if (i < argc-1 && strcmp(argv[i], "-swapinterval") == 0) {
+         swapinterval = strtod(argv[i+1], NULL );
+         ++i;
+      }
+      else if (strcmp(argv[i], "-fullscreen") == 0) {
+         fullscreen = GL_TRUE;
+      }
+      else if (i < argc-1 && strcmp(argv[i], "-geometry") == 0) {
+         XParseGeometry(argv[i+1], &x, &y, &winWidth, &winHeight);
+         i++;
+      }
+      else {
+         usage();
+         return -1;
+      }
+   }
+
+   dpy = XOpenDisplay(dpyName);
+   if (!dpy) {
+      printf("Error: couldn't open display %s\n",
+	     dpyName ? dpyName : getenv("DISPLAY"));
+      return -1;
+   }
+
+   if (fullscreen) {
+      int scrnum = DefaultScreen(dpy);
+
+      x = 0; y = 0;
+      winWidth = DisplayWidth(dpy, scrnum);
+      winHeight = DisplayHeight(dpy, scrnum);
+   }
+
+   make_window(dpy, "glxgears", x, y, winWidth, winHeight, &win, &ctx, &visId);
+   XMapWindow(dpy, win);
+   glXMakeCurrent(dpy, win, ctx);
+   setup_vsync(dpy, win);
+
+   if (printInfo) {
+      printf("GL_RENDERER   = %s\n", (char *) glGetString(GL_RENDERER));
+      printf("GL_VERSION    = %s\n", (char *) glGetString(GL_VERSION));
+      printf("GL_VENDOR     = %s\n", (char *) glGetString(GL_VENDOR));
+      printf("GL_EXTENSIONS = %s\n", (char *) glGetString(GL_EXTENSIONS));
+      printf("VisualID %d, 0x%x\n", (int) visId, (int) visId);
+   }
+
+   init();
+
+   /* Set initial projection/viewing transformation.
+    * We can't be sure we'll get a ConfigureNotify event when the window
+    * first appears.
+    */
+   reshape(winWidth, winHeight);
+
+   event_loop(dpy, win);
+
+   glDeleteLists(gear1, 1);
+   glDeleteLists(gear2, 1);
+   glDeleteLists(gear3, 1);
+   glXMakeCurrent(dpy, None, NULL);
+   glXDestroyContext(dpy, ctx);
+   XDestroyWindow(dpy, win);
+   XCloseDisplay(dpy);
+
+   return 0;
+}
--- a/projects/mesa3d.org/package.yml
+++ b/projects/mesa3d.org/package.yml
@ -0,0 +1,117 @@
+distributable:
+  url: https://mesa.freedesktop.org/archive/mesa-{{version}}.tar.xz
+  strip-components: 1
+versions:
+  url: https://mesa.freedesktop.org/archive
+  match: /mesa-\d+\.\d+\.\d+\.tar\.xz/
+  strip:
+    - /^mesa-/
+    - /\.tar\.xz/
+dependencies:
+  libexpat.github.io: '*'
+  x.org/x11: '*'
+  x.org/xcb: '*'
+  x.org/xdamage: '*'
+  x.org/exts: '*'
+  invisible-island.net/ncurses: '*'
+  zlib.net: '*'
+  darwin:
+    gnu.org/gettext: '*'
+  linux:
+    elfutils.org: '*'
+    khronos.org/glslang: '*'
+    info-zip.org/zip: '*'
+    dri.freedesktop.org: ^2.4.110
+    intel.com/libva: '*'
+    freedesktop.org/vdpau: '*'
+    x.org/xfixes: '*'
+    x.org/xrandr: '*'
+    x.org/xshmfence: '*'
+    x.org/xv: '*'
+    x.org/xxf86vm: '*'
+    llvm.org: '*'
+    github.com/lm-sensors/lm-sensors: '*'
+    wayland.freedesktop.org: '*'
+    wayland.freedesktop.org/protocols: '*'
+build:
+  dependencies:
+    tea.xyz/gx/cc: c99
+    tea.xyz/gx/make: '*'
+    gnu.org/bison: '*'
+    mesonbuild.com: '*'
+    ninja-build.org: '*'
+    freedesktop.org/pkg-config: '*'
+    pygments.org: '*'
+    python.org: ~3.11
+    x.org/protocol: '*'
+    github.com/westes/flex: '*'
+    linux:
+      curl.se: '*'
+  script:
+    - curl -L "$Mako" | tar zxf -
+    - curl -L "$MarkupSafe" | tar zxf -
+    - run: |
+        python -m venv venv
+        source venv/bin/activate
+        python setup.py install
+        deactivate
+        export PYTHONPATH=$PWD/venv/lib/python3.11/site-packages/Mako-1.2.4-py3.11.egg:$PYTHONPATH
+        export PATH=$PWD/venv/bin/mako-render:$PATH
+      working-directory: Mako-1.2.4
+    - run: |
+        python -m venv venv
+        source venv/bin/activate
+        python setup.py install
+        deactivate
+        cd ./venv/lib/python3.11/site-packages/MarkupSafe*
+        export PYTHONPATH=$PWD:$PYTHONPATH
+      working-directory: MarkupSafe-2.1.2
+    - meson setup build $MESON_ARGS
+    - meson compile -C build --verbose
+    - meson install -C build
+  env:
+    Mako: https://files.pythonhosted.org/packages/05/5f/2ba6e026d33a0e6ddc1dddf9958677f76f5f80c236bd65309d280b166d3e/Mako-1.2.4.tar.gz
+    MarkupSafe: https://files.pythonhosted.org/packages/95/7e/68018b70268fb4a2a605e2be44ab7b4dd7ce7808adae6c5ef32e34f4b55a/MarkupSafe-2.1.2.tar.gz
+    PYTHONPATH: "{{deps.pygments.org.prefix}}/venv/lib/python3.11/site-packages:$PYTHONPATH"
+    MESON_ARGS:
+      - --libdir=lib
+      - --prefix={{prefix}}
+      - --buildtype=release
+      - --wrap-mode=nofallback
+    darwin:
+      MESON_ARGS:
+        - -Dosmesa=true
+        - -Dglx=xlib
+    linux:
+      MESON_ARGS:
+        - -Dplatforms=x11,wayland
+        - -Dglx=auto
+        - -Ddri3=enabled
+        - -Dgallium-drivers=lima
+        - -Dgallium-omx=disabled
+        - -Dvulkan-drivers=
+        - -Degl=enabled
+        - -Dgbm=enabled
+        - -Dopengl=true
+        - -Dgles1=enabled
+        - -Dgles2=enabled
+        - -Dvalgrind=disabled
+        - -Dtools=drm-shim,etnaviv,freedreno,glsl,nir,nouveau,lima
+test:
+  dependencies:
+    tea.xyz/gx/cc: c99
+    freedesktop.org/pkg-config: '*'
+  env:
+    FLAGS:
+      - -lX11
+      - -lXext
+      - -lm
+    darwin:
+      FLAGS:
+        - -lGl
+    linux:
+      FLAGS:
+        - "{{prefix}}/lib/libGL.so.1"
+  script:
+    - cc glxgears.c -o gears $FLAGS
+    - pkg-config --modversion gl | grep {{version}}