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-rw-r--r--src/glx/x11/dri_common.c399
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diff --git a/src/glx/x11/dri_common.c b/src/glx/x11/dri_common.c
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+++ b/src/glx/x11/dri_common.c
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+/*
+ * 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 "glheader.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;
+}
+
+_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_COPY_SUB_BUFFER
+ if (strcmp(extensions[i]->name, __DRI_COPY_SUB_BUFFER) == 0) {
+ psc->copySubBuffer = (__DRIcopySubBufferExtension *) extensions[i];
+ __glXEnableDirectExtension(psc, "GLX_MESA_copy_sub_buffer_bit");
+ }
+#endif
+
+#ifdef __DRI_SWAP_CONTROL
+ 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_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_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
+
+#ifdef __DRI_READ_DRAWABLE
+ if (strcmp(extensions[i]->name, __DRI_READ_DRAWABLE) == 0) {
+ __glXEnableDirectExtension(psc, "GLX_SGI_make_current_read");
+ }
+#endif
+
+#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
+
+ /* Ignore unknown extensions */
+ }
+}
+
+#endif /* GLX_DIRECT_RENDERING */