Retire miniglx and move the actual glx code up to src/glx

1 files changed, 450 insertions, 0 deletions

diff --git a/src/glx/dri_common.c b/src/glx/dri_common.c
new file mode 100644
index 0000000000..e4034161bb
--- /dev/null
+++ b/src/glx/dri_common.c
@@ -0,0 +1,450 @@
+/*
+ * Copyright 1998-1999 Precision Insight, Inc., Cedar Park, Texas.
+ * Copyright © 2008 Red Hat, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Soft-
+ * ware"), to deal in the Software without restriction, including without
+ * limitation the rights to use, copy, modify, merge, publish, distribute,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, provided that the above copyright
+ * notice(s) and this permission notice appear in all copies of the Soft-
+ * ware and that both the above copyright notice(s) and this permission
+ * notice appear in supporting documentation.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
+ * ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY
+ * RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN
+ * THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSE-
+ * QUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFOR-
+ * MANCE OF THIS SOFTWARE.
+ *
+ * Except as contained in this notice, the name of a copyright holder shall
+ * not be used in advertising or otherwise to promote the sale, use or
+ * other dealings in this Software without prior written authorization of
+ * the copyright holder.
+ *
+ * Authors:
+ *   Kevin E. Martin <kevin@precisioninsight.com>
+ *   Brian Paul <brian@precisioninsight.com>
+ *   Kristian Høgsberg (krh@redhat.com)
+ */
+
+#ifdef GLX_DIRECT_RENDERING
+
+#include <unistd.h>
+#include <dlfcn.h>
+#include <stdarg.h>
+#include "glxclient.h"
+#include "glcontextmodes.h"
+#include "dri_common.h"
+
+#ifndef RTLD_NOW
+#define RTLD_NOW 0
+#endif
+#ifndef RTLD_GLOBAL
+#define RTLD_GLOBAL 0
+#endif
+
+_X_HIDDEN void
+InfoMessageF(const char *f, ...)
+{
+   va_list args;
+   const char *env;
+
+   if ((env = getenv("LIBGL_DEBUG")) && strstr(env, "verbose")) {
+      fprintf(stderr, "libGL: ");
+      va_start(args, f);
+      vfprintf(stderr, f, args);
+      va_end(args);
+   }
+}
+
+/**
+ * Print error to stderr, unless LIBGL_DEBUG=="quiet".
+ */
+_X_HIDDEN void
+ErrorMessageF(const char *f, ...)
+{
+   va_list args;
+   const char *env;
+
+   if ((env = getenv("LIBGL_DEBUG")) && !strstr(env, "quiet")) {
+      fprintf(stderr, "libGL error: ");
+      va_start(args, f);
+      vfprintf(stderr, f, args);
+      va_end(args);
+   }
+}
+
+#ifndef DEFAULT_DRIVER_DIR
+/* this is normally defined in Mesa/configs/default with DRI_DRIVER_SEARCH_PATH */
+#define DEFAULT_DRIVER_DIR "/usr/local/lib/dri"
+#endif
+
+/**
+ * Try to \c dlopen the named driver.
+ *
+ * This function adds the "_dri.so" suffix to the driver name and searches the
+ * directories specified by the \c LIBGL_DRIVERS_PATH environment variable in
+ * order to find the driver.
+ *
+ * \param driverName - a name like "tdfx", "i810", "mga", etc.
+ *
+ * \returns
+ * A handle from \c dlopen, or \c NULL if driver file not found.
+ */
+_X_HIDDEN void *
+driOpenDriver(const char *driverName)
+{
+   void *glhandle, *handle;
+   const char *libPaths, *p, *next;
+   char realDriverName[200];
+   int len;
+
+   /* Attempt to make sure libGL symbols will be visible to the driver */
+   glhandle = dlopen("libGL.so.1", RTLD_NOW | RTLD_GLOBAL);
+
+   libPaths = NULL;
+   if (geteuid() == getuid()) {
+      /* don't allow setuid apps to use LIBGL_DRIVERS_PATH */
+      libPaths = getenv("LIBGL_DRIVERS_PATH");
+      if (!libPaths)
+         libPaths = getenv("LIBGL_DRIVERS_DIR");        /* deprecated */
+   }
+   if (libPaths == NULL)
+      libPaths = DEFAULT_DRIVER_DIR;
+
+   handle = NULL;
+   for (p = libPaths; *p; p = next) {
+      next = strchr(p, ':');
+      if (next == NULL) {
+         len = strlen(p);
+         next = p + len;
+      }
+      else {
+         len = next - p;
+         next++;
+      }
+
+#ifdef GLX_USE_TLS
+      snprintf(realDriverName, sizeof realDriverName,
+               "%.*s/tls/%s_dri.so", len, p, driverName);
+      InfoMessageF("OpenDriver: trying %s\n", realDriverName);
+      handle = dlopen(realDriverName, RTLD_NOW | RTLD_GLOBAL);
+#endif
+
+      if (handle == NULL) {
+         snprintf(realDriverName, sizeof realDriverName,
+                  "%.*s/%s_dri.so", len, p, driverName);
+         InfoMessageF("OpenDriver: trying %s\n", realDriverName);
+         handle = dlopen(realDriverName, RTLD_NOW | RTLD_GLOBAL);
+      }
+
+      if (handle != NULL)
+         break;
+      else
+         ErrorMessageF("dlopen %s failed (%s)\n", realDriverName, dlerror());
+   }
+
+   if (!handle)
+      ErrorMessageF("unable to load driver: %s_dri.so\n", driverName);
+
+   if (glhandle)
+      dlclose(glhandle);
+
+   return handle;
+}
+
+_X_HIDDEN const __DRIsystemTimeExtension systemTimeExtension = {
+   {__DRI_SYSTEM_TIME, __DRI_SYSTEM_TIME_VERSION},
+   __glXGetUST,
+   __driGetMscRateOML
+};
+
+#define __ATTRIB(attrib, field) \
+    { attrib, offsetof(__GLcontextModes, field) }
+
+static const struct
+{
+   unsigned int attrib, offset;
+} attribMap[] = {
+   __ATTRIB(__DRI_ATTRIB_BUFFER_SIZE, rgbBits),
+      __ATTRIB(__DRI_ATTRIB_LEVEL, level),
+      __ATTRIB(__DRI_ATTRIB_RED_SIZE, redBits),
+      __ATTRIB(__DRI_ATTRIB_GREEN_SIZE, greenBits),
+      __ATTRIB(__DRI_ATTRIB_BLUE_SIZE, blueBits),
+      __ATTRIB(__DRI_ATTRIB_ALPHA_SIZE, alphaBits),
+      __ATTRIB(__DRI_ATTRIB_DEPTH_SIZE, depthBits),
+      __ATTRIB(__DRI_ATTRIB_STENCIL_SIZE, stencilBits),
+      __ATTRIB(__DRI_ATTRIB_ACCUM_RED_SIZE, accumRedBits),
+      __ATTRIB(__DRI_ATTRIB_ACCUM_GREEN_SIZE, accumGreenBits),
+      __ATTRIB(__DRI_ATTRIB_ACCUM_BLUE_SIZE, accumBlueBits),
+      __ATTRIB(__DRI_ATTRIB_ACCUM_ALPHA_SIZE, accumAlphaBits),
+      __ATTRIB(__DRI_ATTRIB_SAMPLE_BUFFERS, sampleBuffers),
+      __ATTRIB(__DRI_ATTRIB_SAMPLES, samples),
+      __ATTRIB(__DRI_ATTRIB_DOUBLE_BUFFER, doubleBufferMode),
+      __ATTRIB(__DRI_ATTRIB_STEREO, stereoMode),
+      __ATTRIB(__DRI_ATTRIB_AUX_BUFFERS, numAuxBuffers),
+#if 0
+      __ATTRIB(__DRI_ATTRIB_TRANSPARENT_TYPE, transparentPixel),
+      __ATTRIB(__DRI_ATTRIB_TRANSPARENT_INDEX_VALUE, transparentIndex),
+      __ATTRIB(__DRI_ATTRIB_TRANSPARENT_RED_VALUE, transparentRed),
+      __ATTRIB(__DRI_ATTRIB_TRANSPARENT_GREEN_VALUE, transparentGreen),
+      __ATTRIB(__DRI_ATTRIB_TRANSPARENT_BLUE_VALUE, transparentBlue),
+      __ATTRIB(__DRI_ATTRIB_TRANSPARENT_ALPHA_VALUE, transparentAlpha),
+      __ATTRIB(__DRI_ATTRIB_RED_MASK, redMask),
+      __ATTRIB(__DRI_ATTRIB_GREEN_MASK, greenMask),
+      __ATTRIB(__DRI_ATTRIB_BLUE_MASK, blueMask),
+      __ATTRIB(__DRI_ATTRIB_ALPHA_MASK, alphaMask),
+#endif
+      __ATTRIB(__DRI_ATTRIB_MAX_PBUFFER_WIDTH, maxPbufferWidth),
+      __ATTRIB(__DRI_ATTRIB_MAX_PBUFFER_HEIGHT, maxPbufferHeight),
+      __ATTRIB(__DRI_ATTRIB_MAX_PBUFFER_PIXELS, maxPbufferPixels),
+      __ATTRIB(__DRI_ATTRIB_OPTIMAL_PBUFFER_WIDTH, optimalPbufferWidth),
+      __ATTRIB(__DRI_ATTRIB_OPTIMAL_PBUFFER_HEIGHT, optimalPbufferHeight),
+#if 0
+      __ATTRIB(__DRI_ATTRIB_SWAP_METHOD, swapMethod),
+#endif
+__ATTRIB(__DRI_ATTRIB_BIND_TO_TEXTURE_RGB, bindToTextureRgb),
+      __ATTRIB(__DRI_ATTRIB_BIND_TO_TEXTURE_RGBA, bindToTextureRgba),
+      __ATTRIB(__DRI_ATTRIB_BIND_TO_MIPMAP_TEXTURE,
+                     bindToMipmapTexture),
+      __ATTRIB(__DRI_ATTRIB_YINVERTED, yInverted),};
+
+#define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
+
+static int
+scalarEqual(__GLcontextModes * mode, unsigned int attrib, unsigned int value)
+{
+   unsigned int glxValue;
+   int i;
+
+   for (i = 0; i < ARRAY_SIZE(attribMap); i++)
+      if (attribMap[i].attrib == attrib) {
+         glxValue = *(unsigned int *) ((char *) mode + attribMap[i].offset);
+         return glxValue == GLX_DONT_CARE || glxValue == value;
+      }
+
+   return GL_TRUE;              /* Is a non-existing attribute equal to value? */
+}
+
+static int
+driConfigEqual(const __DRIcoreExtension * core,
+               __GLcontextModes * modes, const __DRIconfig * driConfig)
+{
+   unsigned int attrib, value, glxValue;
+   int i;
+
+   i = 0;
+   while (core->indexConfigAttrib(driConfig, i++, &attrib, &value)) {
+      switch (attrib) {
+      case __DRI_ATTRIB_RENDER_TYPE:
+         glxValue = 0;
+         if (value & __DRI_ATTRIB_RGBA_BIT) {
+            glxValue |= GLX_RGBA_BIT;
+         }
+         else if (value & __DRI_ATTRIB_COLOR_INDEX_BIT) {
+            glxValue |= GLX_COLOR_INDEX_BIT;
+         }
+         if (glxValue != modes->renderType)
+            return GL_FALSE;
+         break;
+
+      case __DRI_ATTRIB_CONFIG_CAVEAT:
+         if (value & __DRI_ATTRIB_NON_CONFORMANT_CONFIG)
+            glxValue = GLX_NON_CONFORMANT_CONFIG;
+         else if (value & __DRI_ATTRIB_SLOW_BIT)
+            glxValue = GLX_SLOW_CONFIG;
+         else
+            glxValue = GLX_NONE;
+         if (glxValue != modes->visualRating)
+            return GL_FALSE;
+         break;
+
+      case __DRI_ATTRIB_BIND_TO_TEXTURE_TARGETS:
+         glxValue = 0;
+         if (value & __DRI_ATTRIB_TEXTURE_1D_BIT)
+            glxValue |= GLX_TEXTURE_1D_BIT_EXT;
+         if (value & __DRI_ATTRIB_TEXTURE_2D_BIT)
+            glxValue |= GLX_TEXTURE_2D_BIT_EXT;
+         if (value & __DRI_ATTRIB_TEXTURE_RECTANGLE_BIT)
+            glxValue |= GLX_TEXTURE_RECTANGLE_BIT_EXT;
+         if (modes->bindToTextureTargets != GLX_DONT_CARE &&
+             glxValue != modes->bindToTextureTargets)
+            return GL_FALSE;
+         break;
+
+      default:
+         if (!scalarEqual(modes, attrib, value))
+            return GL_FALSE;
+      }
+   }
+
+   return GL_TRUE;
+}
+
+static __GLcontextModes *
+createDriMode(const __DRIcoreExtension * core,
+              __GLcontextModes * modes, const __DRIconfig ** driConfigs)
+{
+   __GLXDRIconfigPrivate *config;
+   int i;
+
+   for (i = 0; driConfigs[i]; i++) {
+      if (driConfigEqual(core, modes, driConfigs[i]))
+         break;
+   }
+
+   if (driConfigs[i] == NULL)
+      return NULL;
+
+   config = Xmalloc(sizeof *config);
+   if (config == NULL)
+      return NULL;
+
+   config->modes = *modes;
+   config->driConfig = driConfigs[i];
+
+   return &config->modes;
+}
+
+_X_HIDDEN __GLcontextModes *
+driConvertConfigs(const __DRIcoreExtension * core,
+                  __GLcontextModes * modes, const __DRIconfig ** configs)
+{
+   __GLcontextModes head, *tail, *m;
+
+   tail = &head;
+   head.next = NULL;
+   for (m = modes; m; m = m->next) {
+      tail->next = createDriMode(core, m, configs);
+      if (tail->next == NULL) {
+         /* no matching dri config for m */
+         continue;
+      }
+
+
+      tail = tail->next;
+   }
+
+   _gl_context_modes_destroy(modes);
+
+   return head.next;
+}
+
+/* Bind DRI1 specific extensions */
+_X_HIDDEN void
+driBindExtensions(__GLXscreenConfigs *psc)
+{
+   const __DRIextension **extensions;
+   int i;
+
+   extensions = psc->core->getExtensions(psc->__driScreen);
+
+   for (i = 0; extensions[i]; i++) {
+#ifdef __DRI_SWAP_CONTROL
+      /* No DRI2 support for swap_control at the moment, since SwapBuffers
+       * is done by the X server */
+      if (strcmp(extensions[i]->name, __DRI_SWAP_CONTROL) == 0) {
+	 psc->swapControl = (__DRIswapControlExtension *) extensions[i];
+	 __glXEnableDirectExtension(psc, "GLX_SGI_swap_control");
+	 __glXEnableDirectExtension(psc, "GLX_MESA_swap_control");
+      }
+#endif
+
+#ifdef __DRI_MEDIA_STREAM_COUNTER
+      if (strcmp(extensions[i]->name, __DRI_MEDIA_STREAM_COUNTER) == 0) {
+         psc->msc = (__DRImediaStreamCounterExtension *) extensions[i];
+         __glXEnableDirectExtension(psc, "GLX_SGI_video_sync");
+      }
+#endif
+
+#ifdef __DRI_SWAP_BUFFER_COUNTER
+      /* No driver supports this at this time and the extension is
+       * not defined in dri_interface.h.  Will enable
+       * GLX_OML_sync_control if implemented. */
+#endif
+
+      /* Ignore unknown extensions */
+   }
+}
+
+/* Bind DRI2 specific extensions */
+_X_HIDDEN void
+dri2BindExtensions(__GLXscreenConfigs *psc)
+{
+   const __DRIextension **extensions;
+   int i;
+
+   extensions = psc->core->getExtensions(psc->__driScreen);
+
+   for (i = 0; extensions[i]; i++) {
+#ifdef __DRI_TEX_BUFFER
+      if ((strcmp(extensions[i]->name, __DRI_TEX_BUFFER) == 0)) {
+	 psc->texBuffer = (__DRItexBufferExtension *) extensions[i];
+	 __glXEnableDirectExtension(psc, "GLX_EXT_texture_from_pixmap");
+      }
+#endif
+
+      __glXEnableDirectExtension(psc, "GLX_SGI_video_sync");
+      __glXEnableDirectExtension(psc, "GLX_SGI_swap_control");
+      __glXEnableDirectExtension(psc, "GLX_MESA_swap_control");
+
+      /* FIXME: if DRI2 version supports it... */
+      __glXEnableDirectExtension(psc, "INTEL_swap_event");
+
+#ifdef __DRI2_FLUSH
+      if ((strcmp(extensions[i]->name, __DRI2_FLUSH) == 0)) {
+	 psc->f = (__DRI2flushExtension *) extensions[i];
+	 /* internal driver extension, no GL extension exposed */
+      }
+#endif
+   }
+}
+
+/* Bind extensions common to DRI1 and DRI2 */
+_X_HIDDEN void
+driBindCommonExtensions(__GLXscreenConfigs *psc)
+{
+   const __DRIextension **extensions;
+   int i;
+
+   extensions = psc->core->getExtensions(psc->__driScreen);
+
+   for (i = 0; extensions[i]; i++) {
+#ifdef __DRI_COPY_SUB_BUFFER
+      if (strcmp(extensions[i]->name, __DRI_COPY_SUB_BUFFER) == 0) {
+	 psc->driCopySubBuffer = (__DRIcopySubBufferExtension *) extensions[i];
+	 __glXEnableDirectExtension(psc, "GLX_MESA_copy_sub_buffer");
+      }
+#endif
+
+#ifdef __DRI_ALLOCATE
+      if (strcmp(extensions[i]->name, __DRI_ALLOCATE) == 0) {
+	 psc->allocate = (__DRIallocateExtension *) extensions[i];
+	 __glXEnableDirectExtension(psc, "GLX_MESA_allocate_memory");
+      }
+#endif
+
+#ifdef __DRI_FRAME_TRACKING
+      if (strcmp(extensions[i]->name, __DRI_FRAME_TRACKING) == 0) {
+	 psc->frameTracking = (__DRIframeTrackingExtension *) extensions[i];
+	 __glXEnableDirectExtension(psc, "GLX_MESA_swap_frame_usage");
+      }
+#endif
+
+#ifdef __DRI_READ_DRAWABLE
+      if (strcmp(extensions[i]->name, __DRI_READ_DRAWABLE) == 0) {
+	 __glXEnableDirectExtension(psc, "GLX_SGI_make_current_read");
+      }
+#endif
+
+      /* Ignore unknown extensions */
+   }
+}
+
+#endif /* GLX_DIRECT_RENDERING */