blob: e4034161bb32c2ec07a6e8ba0b85a654ee7b7456 [file] [log] [blame]
/*
* 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 */