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|
/**************************************************************************
*
* Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
* 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, sub license, 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 (including the
* next paragraph) 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 NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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 an EGL driver that wraps GLX. This gives the benefit of being
* completely agnostic of the direct rendering implementation.
*
* Authors: Alan Hourihane <alanh@tungstengraphics.com>
*/
#include <stdlib.h>
#include <string.h>
#include <X11/Xlib.h>
#include <dlfcn.h>
#include "GL/glx.h"
#include "eglconfig.h"
#include "eglcontext.h"
#include "egldefines.h"
#include "egldisplay.h"
#include "egldriver.h"
#include "eglcurrent.h"
#include "egllog.h"
#include "eglsurface.h"
#define CALLOC_STRUCT(T) (struct T *) calloc(1, sizeof(struct T))
#ifndef GLX_VERSION_1_4
#error "GL/glx.h must be equal to or greater than GLX 1.4"
#endif
/* GLX 1.0 */
typedef GLXContext (*GLXCREATECONTEXTPROC)( Display *dpy, XVisualInfo *vis, GLXContext shareList, Bool direct );
typedef void (*GLXDESTROYCONTEXTPROC)( Display *dpy, GLXContext ctx );
typedef Bool (*GLXMAKECURRENTPROC)( Display *dpy, GLXDrawable drawable, GLXContext ctx);
typedef void (*GLXSWAPBUFFERSPROC)( Display *dpy, GLXDrawable drawable );
typedef GLXPixmap (*GLXCREATEGLXPIXMAPPROC)( Display *dpy, XVisualInfo *visual, Pixmap pixmap );
typedef void (*GLXDESTROYGLXPIXMAPPROC)( Display *dpy, GLXPixmap pixmap );
typedef Bool (*GLXQUERYVERSIONPROC)( Display *dpy, int *maj, int *min );
typedef int (*GLXGETCONFIGPROC)( Display *dpy, XVisualInfo *visual, int attrib, int *value );
typedef void (*GLXWAITGLPROC)( void );
typedef void (*GLXWAITXPROC)( void );
/* GLX 1.1 */
typedef const char *(*GLXQUERYEXTENSIONSSTRINGPROC)( Display *dpy, int screen );
typedef const char *(*GLXQUERYSERVERSTRINGPROC)( Display *dpy, int screen, int name );
typedef const char *(*GLXGETCLIENTSTRINGPROC)( Display *dpy, int name );
/** subclass of _EGLDriver */
struct GLX_egl_driver
{
_EGLDriver Base; /**< base class */
void *handle;
/* GLX 1.0 */
GLXCREATECONTEXTPROC glXCreateContext;
GLXDESTROYCONTEXTPROC glXDestroyContext;
GLXMAKECURRENTPROC glXMakeCurrent;
GLXSWAPBUFFERSPROC glXSwapBuffers;
GLXCREATEGLXPIXMAPPROC glXCreateGLXPixmap;
GLXDESTROYGLXPIXMAPPROC glXDestroyGLXPixmap;
GLXQUERYVERSIONPROC glXQueryVersion;
GLXGETCONFIGPROC glXGetConfig;
GLXWAITGLPROC glXWaitGL;
GLXWAITXPROC glXWaitX;
/* GLX 1.1 */
GLXQUERYEXTENSIONSSTRINGPROC glXQueryExtensionsString;
GLXQUERYSERVERSTRINGPROC glXQueryServerString;
GLXGETCLIENTSTRINGPROC glXGetClientString;
/* GLX 1.3 or (GLX_SGI_make_current_read and GLX_SGIX_fbconfig) */
PFNGLXGETFBCONFIGSPROC glXGetFBConfigs;
PFNGLXGETFBCONFIGATTRIBPROC glXGetFBConfigAttrib;
PFNGLXGETVISUALFROMFBCONFIGPROC glXGetVisualFromFBConfig;
PFNGLXCREATEWINDOWPROC glXCreateWindow;
PFNGLXDESTROYWINDOWPROC glXDestroyWindow;
PFNGLXCREATEPIXMAPPROC glXCreatePixmap;
PFNGLXDESTROYPIXMAPPROC glXDestroyPixmap;
PFNGLXCREATEPBUFFERPROC glXCreatePbuffer;
PFNGLXDESTROYPBUFFERPROC glXDestroyPbuffer;
PFNGLXCREATENEWCONTEXTPROC glXCreateNewContext;
PFNGLXMAKECONTEXTCURRENTPROC glXMakeContextCurrent;
/* GLX 1.4 or GLX_ARB_get_proc_address */
PFNGLXGETPROCADDRESSPROC glXGetProcAddress;
/* GLX_SGIX_pbuffer */
PFNGLXCREATEGLXPBUFFERSGIXPROC glXCreateGLXPbufferSGIX;
PFNGLXDESTROYGLXPBUFFERSGIXPROC glXDestroyGLXPbufferSGIX;
};
/** driver data of _EGLDisplay */
struct GLX_egl_display
{
Display *dpy;
XVisualInfo *visuals;
GLXFBConfig *fbconfigs;
int glx_maj, glx_min;
const char *extensions;
EGLBoolean have_1_3;
EGLBoolean have_make_current_read;
EGLBoolean have_fbconfig;
EGLBoolean have_pbuffer;
/* workaround quirks of different GLX implementations */
EGLBoolean single_buffered_quirk;
EGLBoolean glx_window_quirk;
};
/** subclass of _EGLContext */
struct GLX_egl_context
{
_EGLContext Base; /**< base class */
GLXContext context;
};
/** subclass of _EGLSurface */
struct GLX_egl_surface
{
_EGLSurface Base; /**< base class */
Drawable drawable;
GLXDrawable glx_drawable;
void (*destroy)(Display *, GLXDrawable);
};
/** subclass of _EGLConfig */
struct GLX_egl_config
{
_EGLConfig Base; /**< base class */
EGLBoolean double_buffered;
int index;
};
/* standard typecasts */
_EGL_DRIVER_STANDARD_TYPECASTS(GLX_egl)
static int
GLX_egl_config_index(_EGLConfig *conf)
{
struct GLX_egl_config *GLX_conf = GLX_egl_config(conf);
return GLX_conf->index;
}
static const struct {
int attr;
int egl_attr;
} fbconfig_attributes[] = {
/* table 3.1 of GLX 1.4 */
{ GLX_FBCONFIG_ID, 0 },
{ GLX_BUFFER_SIZE, EGL_BUFFER_SIZE },
{ GLX_LEVEL, EGL_LEVEL },
{ GLX_DOUBLEBUFFER, 0 },
{ GLX_STEREO, 0 },
{ GLX_AUX_BUFFERS, 0 },
{ GLX_RED_SIZE, EGL_RED_SIZE },
{ GLX_GREEN_SIZE, EGL_GREEN_SIZE },
{ GLX_BLUE_SIZE, EGL_BLUE_SIZE },
{ GLX_ALPHA_SIZE, EGL_ALPHA_SIZE },
{ GLX_DEPTH_SIZE, EGL_DEPTH_SIZE },
{ GLX_STENCIL_SIZE, EGL_STENCIL_SIZE },
{ GLX_ACCUM_RED_SIZE, 0 },
{ GLX_ACCUM_GREEN_SIZE, 0 },
{ GLX_ACCUM_BLUE_SIZE, 0 },
{ GLX_ACCUM_ALPHA_SIZE, 0 },
{ GLX_SAMPLE_BUFFERS, EGL_SAMPLE_BUFFERS },
{ GLX_SAMPLES, EGL_SAMPLES },
{ GLX_RENDER_TYPE, 0 },
{ GLX_DRAWABLE_TYPE, EGL_SURFACE_TYPE },
{ GLX_X_RENDERABLE, EGL_NATIVE_RENDERABLE },
{ GLX_X_VISUAL_TYPE, EGL_NATIVE_VISUAL_TYPE },
{ GLX_CONFIG_CAVEAT, EGL_CONFIG_CAVEAT },
{ GLX_TRANSPARENT_TYPE, EGL_TRANSPARENT_TYPE },
{ GLX_TRANSPARENT_INDEX_VALUE, 0 },
{ GLX_TRANSPARENT_RED_VALUE, EGL_TRANSPARENT_RED_VALUE },
{ GLX_TRANSPARENT_GREEN_VALUE, EGL_TRANSPARENT_GREEN_VALUE },
{ GLX_TRANSPARENT_BLUE_VALUE, EGL_TRANSPARENT_BLUE_VALUE },
{ GLX_MAX_PBUFFER_WIDTH, EGL_MAX_PBUFFER_WIDTH },
{ GLX_MAX_PBUFFER_HEIGHT, EGL_MAX_PBUFFER_HEIGHT },
{ GLX_MAX_PBUFFER_PIXELS, EGL_MAX_PBUFFER_PIXELS },
{ GLX_VISUAL_ID, EGL_NATIVE_VISUAL_ID }
};
static EGLBoolean
convert_fbconfig(struct GLX_egl_driver *GLX_drv,
struct GLX_egl_display *GLX_dpy, GLXFBConfig fbconfig,
struct GLX_egl_config *GLX_conf)
{
Display *dpy = GLX_dpy->dpy;
int err, attr, val;
unsigned i;
/* must have rgba bit */
err = GLX_drv->glXGetFBConfigAttrib(dpy, fbconfig, GLX_RENDER_TYPE, &val);
if (err || !(val & GLX_RGBA_BIT))
return EGL_FALSE;
/* must know whether it is double-buffered */
err = GLX_drv->glXGetFBConfigAttrib(dpy, fbconfig, GLX_DOUBLEBUFFER, &val);
if (err)
return EGL_FALSE;
GLX_conf->double_buffered = val;
GLX_conf->Base.RenderableType = EGL_OPENGL_BIT;
GLX_conf->Base.Conformant = EGL_OPENGL_BIT;
for (i = 0; i < ARRAY_SIZE(fbconfig_attributes); i++) {
EGLint egl_attr, egl_val;
attr = fbconfig_attributes[i].attr;
egl_attr = fbconfig_attributes[i].egl_attr;
if (!egl_attr)
continue;
err = GLX_drv->glXGetFBConfigAttrib(dpy, fbconfig, attr, &val);
if (err) {
if (err == GLX_BAD_ATTRIBUTE) {
err = 0;
continue;
}
break;
}
switch (egl_attr) {
case EGL_SURFACE_TYPE:
egl_val = 0;
if (val & GLX_WINDOW_BIT)
egl_val |= EGL_WINDOW_BIT;
/* pixmap and pbuffer surfaces must be single-buffered in EGL */
if (!GLX_conf->double_buffered) {
if (val & GLX_PIXMAP_BIT)
egl_val |= EGL_PIXMAP_BIT;
if (val & GLX_PBUFFER_BIT)
egl_val |= EGL_PBUFFER_BIT;
}
break;
case EGL_NATIVE_VISUAL_TYPE:
switch (val) {
case GLX_TRUE_COLOR:
egl_val = TrueColor;
break;
case GLX_DIRECT_COLOR:
egl_val = DirectColor;
break;
case GLX_PSEUDO_COLOR:
egl_val = PseudoColor;
break;
case GLX_STATIC_COLOR:
egl_val = StaticColor;
break;
case GLX_GRAY_SCALE:
egl_val = GrayScale;
break;
case GLX_STATIC_GRAY:
egl_val = StaticGray;
break;
default:
egl_val = EGL_NONE;
break;
}
break;
case EGL_CONFIG_CAVEAT:
egl_val = EGL_NONE;
if (val == GLX_SLOW_CONFIG) {
egl_val = EGL_SLOW_CONFIG;
}
else if (val == GLX_NON_CONFORMANT_CONFIG) {
GLX_conf->Base.Conformant &= ~EGL_OPENGL_BIT;
egl_val = EGL_NONE;
}
break;
case EGL_TRANSPARENT_TYPE:
egl_val = (val == GLX_TRANSPARENT_RGB) ?
EGL_TRANSPARENT_RGB : EGL_NONE;
break;
default:
egl_val = val;
break;
}
_eglSetConfigKey(&GLX_conf->Base, egl_attr, egl_val);
}
if (err)
return EGL_FALSE;
if (!GLX_conf->Base.SurfaceType)
return EGL_FALSE;
return EGL_TRUE;
}
static const struct {
int attr;
int egl_attr;
} visual_attributes[] = {
/* table 3.7 of GLX 1.4 */
{ GLX_USE_GL, 0 },
{ GLX_BUFFER_SIZE, EGL_BUFFER_SIZE },
{ GLX_LEVEL, EGL_LEVEL },
{ GLX_RGBA, 0 },
{ GLX_DOUBLEBUFFER, 0 },
{ GLX_STEREO, 0 },
{ GLX_AUX_BUFFERS, 0 },
{ GLX_RED_SIZE, EGL_RED_SIZE },
{ GLX_GREEN_SIZE, EGL_GREEN_SIZE },
{ GLX_BLUE_SIZE, EGL_BLUE_SIZE },
{ GLX_ALPHA_SIZE, EGL_ALPHA_SIZE },
{ GLX_DEPTH_SIZE, EGL_DEPTH_SIZE },
{ GLX_STENCIL_SIZE, EGL_STENCIL_SIZE },
{ GLX_ACCUM_RED_SIZE, 0 },
{ GLX_ACCUM_GREEN_SIZE, 0 },
{ GLX_ACCUM_BLUE_SIZE, 0 },
{ GLX_ACCUM_ALPHA_SIZE, 0 },
{ GLX_SAMPLE_BUFFERS, EGL_SAMPLE_BUFFERS },
{ GLX_SAMPLES, EGL_SAMPLES },
{ GLX_FBCONFIG_ID, 0 },
/* GLX_EXT_visual_rating */
{ GLX_VISUAL_CAVEAT_EXT, EGL_CONFIG_CAVEAT }
};
static EGLBoolean
convert_visual(struct GLX_egl_driver *GLX_drv,
struct GLX_egl_display *GLX_dpy, XVisualInfo *vinfo,
struct GLX_egl_config *GLX_conf)
{
Display *dpy = GLX_dpy->dpy;
int err, attr, val;
unsigned i;
/* the visual must support OpenGL and RGBA buffer */
err = GLX_drv->glXGetConfig(dpy, vinfo, GLX_USE_GL, &val);
if (!err && val)
err = GLX_drv->glXGetConfig(dpy, vinfo, GLX_RGBA, &val);
if (err || !val)
return EGL_FALSE;
/* must know whether it is double-buffered */
err = GLX_drv->glXGetConfig(dpy, vinfo, GLX_DOUBLEBUFFER, &val);
if (err)
return EGL_FALSE;
GLX_conf->double_buffered = val;
GLX_conf->Base.RenderableType = EGL_OPENGL_BIT;
GLX_conf->Base.Conformant = EGL_OPENGL_BIT;
GLX_conf->Base.SurfaceType = EGL_WINDOW_BIT;
/* pixmap surfaces must be single-buffered in EGL */
if (!GLX_conf->double_buffered)
GLX_conf->Base.SurfaceType |= EGL_PIXMAP_BIT;
GLX_conf->Base.NativeVisualID = vinfo->visualid;
GLX_conf->Base.NativeVisualType = vinfo->class;
GLX_conf->Base.NativeRenderable = EGL_TRUE;
for (i = 0; i < ARRAY_SIZE(visual_attributes); i++) {
EGLint egl_attr, egl_val;
attr = visual_attributes[i].attr;
egl_attr = visual_attributes[i].egl_attr;
if (!egl_attr)
continue;
err = GLX_drv->glXGetConfig(dpy, vinfo, attr, &val);
if (err) {
if (err == GLX_BAD_ATTRIBUTE) {
err = 0;
continue;
}
break;
}
switch (egl_attr) {
case EGL_CONFIG_CAVEAT:
egl_val = EGL_NONE;
if (val == GLX_SLOW_VISUAL_EXT) {
egl_val = EGL_SLOW_CONFIG;
}
else if (val == GLX_NON_CONFORMANT_VISUAL_EXT) {
GLX_conf->Base.Conformant &= ~EGL_OPENGL_BIT;
egl_val = EGL_NONE;
}
break;
break;
default:
egl_val = val;
break;
}
_eglSetConfigKey(&GLX_conf->Base, egl_attr, egl_val);
}
return (err) ? EGL_FALSE : EGL_TRUE;
}
static void
fix_config(struct GLX_egl_display *GLX_dpy, struct GLX_egl_config *GLX_conf)
{
_EGLConfig *conf = &GLX_conf->Base;
if (!GLX_conf->double_buffered && GLX_dpy->single_buffered_quirk) {
/* some GLX impls do not like single-buffered window surface */
conf->SurfaceType &= ~EGL_WINDOW_BIT;
/* pbuffer bit is usually not set */
if (GLX_dpy->have_pbuffer)
conf->SurfaceType |= EGL_PBUFFER_BIT;
}
/* no visual attribs unless window bit is set */
if (!(conf->SurfaceType & EGL_WINDOW_BIT)) {
conf->NativeVisualID = 0;
conf->NativeVisualType = EGL_NONE;
}
if (conf->TransparentType != EGL_TRANSPARENT_RGB) {
/* some impls set them to -1 (GLX_DONT_CARE) */
conf->TransparentRedValue = 0;
conf->TransparentGreenValue = 0;
conf->TransparentBlueValue = 0;
}
/* make sure buffer size is set correctly */
conf->BufferSize =
conf->RedSize + conf->GreenSize + conf->BlueSize + conf->AlphaSize;
}
static EGLBoolean
create_configs(_EGLDriver *drv, _EGLDisplay *dpy, EGLint screen)
{
struct GLX_egl_driver *GLX_drv = GLX_egl_driver(drv);
struct GLX_egl_display *GLX_dpy = GLX_egl_display(dpy);
EGLint num_configs = 0, i;
EGLint id = 1;
if (GLX_dpy->have_fbconfig) {
GLX_dpy->fbconfigs =
GLX_drv->glXGetFBConfigs(GLX_dpy->dpy, screen, &num_configs);
}
else {
XVisualInfo vinfo_template;
long mask;
vinfo_template.screen = screen;
mask = VisualScreenMask;
GLX_dpy->visuals = XGetVisualInfo(GLX_dpy->dpy, mask, &vinfo_template,
&num_configs);
}
if (!num_configs)
return EGL_FALSE;
for (i = 0; i < num_configs; i++) {
struct GLX_egl_config *GLX_conf, template;
EGLBoolean ok;
memset(&template, 0, sizeof(template));
_eglInitConfig(&template.Base, dpy, id);
if (GLX_dpy->have_fbconfig) {
ok = convert_fbconfig(GLX_drv, GLX_dpy,
GLX_dpy->fbconfigs[i], &template);
}
else {
ok = convert_visual(GLX_drv, GLX_dpy,
&GLX_dpy->visuals[i], &template);
}
if (!ok)
continue;
fix_config(GLX_dpy, &template);
if (!_eglValidateConfig(&template.Base, EGL_FALSE)) {
_eglLog(_EGL_DEBUG, "GLX: failed to validate config %d", i);
continue;
}
GLX_conf = CALLOC_STRUCT(GLX_egl_config);
if (GLX_conf) {
memcpy(GLX_conf, &template, sizeof(template));
GLX_conf->index = i;
_eglLinkConfig(&GLX_conf->Base);
id++;
}
}
return EGL_TRUE;
}
static void
check_extensions(struct GLX_egl_driver *GLX_drv,
struct GLX_egl_display *GLX_dpy, EGLint screen)
{
GLX_dpy->extensions =
GLX_drv->glXQueryExtensionsString(GLX_dpy->dpy, screen);
if (GLX_dpy->extensions) {
if (strstr(GLX_dpy->extensions, "GLX_SGI_make_current_read")) {
/* GLX 1.3 entry points are used */
GLX_dpy->have_make_current_read = EGL_TRUE;
}
if (strstr(GLX_dpy->extensions, "GLX_SGIX_fbconfig")) {
/* GLX 1.3 entry points are used */
GLX_dpy->have_fbconfig = EGL_TRUE;
}
if (strstr(GLX_dpy->extensions, "GLX_SGIX_pbuffer")) {
if (GLX_drv->glXCreateGLXPbufferSGIX &&
GLX_drv->glXDestroyGLXPbufferSGIX &&
GLX_dpy->have_fbconfig)
GLX_dpy->have_pbuffer = EGL_TRUE;
}
}
if (GLX_dpy->glx_maj == 1 && GLX_dpy->glx_min >= 3) {
GLX_dpy->have_1_3 = EGL_TRUE;
GLX_dpy->have_make_current_read = EGL_TRUE;
GLX_dpy->have_fbconfig = EGL_TRUE;
GLX_dpy->have_pbuffer = EGL_TRUE;
}
}
static void
check_quirks(struct GLX_egl_driver *GLX_drv,
struct GLX_egl_display *GLX_dpy, EGLint screen)
{
const char *vendor;
GLX_dpy->single_buffered_quirk = EGL_TRUE;
GLX_dpy->glx_window_quirk = EGL_TRUE;
vendor = GLX_drv->glXGetClientString(GLX_dpy->dpy, GLX_VENDOR);
if (vendor && strstr(vendor, "NVIDIA")) {
vendor = GLX_drv->glXQueryServerString(GLX_dpy->dpy, screen, GLX_VENDOR);
if (vendor && strstr(vendor, "NVIDIA")) {
_eglLog(_EGL_DEBUG, "disable quirks");
GLX_dpy->single_buffered_quirk = EGL_FALSE;
GLX_dpy->glx_window_quirk = EGL_FALSE;
}
}
}
/**
* Called via eglInitialize(), GLX_drv->API.Initialize().
*/
static EGLBoolean
GLX_eglInitialize(_EGLDriver *drv, _EGLDisplay *disp)
{
struct GLX_egl_driver *GLX_drv = GLX_egl_driver(drv);
struct GLX_egl_display *GLX_dpy;
if (disp->Platform != _EGL_PLATFORM_X11)
return EGL_FALSE;
/* this is a fallback driver */
if (!disp->Options.UseFallback)
return EGL_FALSE;
if (disp->Options.TestOnly)
return EGL_TRUE;
GLX_dpy = CALLOC_STRUCT(GLX_egl_display);
if (!GLX_dpy)
return _eglError(EGL_BAD_ALLOC, "eglInitialize");
GLX_dpy->dpy = (Display *) disp->PlatformDisplay;
if (!GLX_dpy->dpy) {
GLX_dpy->dpy = XOpenDisplay(NULL);
if (!GLX_dpy->dpy) {
_eglLog(_EGL_WARNING, "GLX: XOpenDisplay failed");
free(GLX_dpy);
return EGL_FALSE;
}
}
if (!GLX_drv->glXQueryVersion(GLX_dpy->dpy,
&GLX_dpy->glx_maj, &GLX_dpy->glx_min)) {
_eglLog(_EGL_WARNING, "GLX: glXQueryVersion failed");
if (!disp->PlatformDisplay)
XCloseDisplay(GLX_dpy->dpy);
free(GLX_dpy);
return EGL_FALSE;
}
disp->DriverData = (void *) GLX_dpy;
disp->ClientAPIs = EGL_OPENGL_BIT;
check_extensions(GLX_drv, GLX_dpy, DefaultScreen(GLX_dpy->dpy));
check_quirks(GLX_drv, GLX_dpy, DefaultScreen(GLX_dpy->dpy));
create_configs(drv, disp, DefaultScreen(GLX_dpy->dpy));
if (!_eglGetArraySize(disp->Configs)) {
_eglLog(_EGL_WARNING, "GLX: failed to create any config");
if (!disp->PlatformDisplay)
XCloseDisplay(GLX_dpy->dpy);
free(GLX_dpy);
return EGL_FALSE;
}
/* we're supporting EGL 1.4 */
disp->VersionMajor = 1;
disp->VersionMinor = 4;
return EGL_TRUE;
}
/**
* Called via eglTerminate(), drv->API.Terminate().
*/
static EGLBoolean
GLX_eglTerminate(_EGLDriver *drv, _EGLDisplay *disp)
{
struct GLX_egl_display *GLX_dpy = GLX_egl_display(disp);
_eglReleaseDisplayResources(drv, disp);
_eglCleanupDisplay(disp);
if (GLX_dpy->visuals)
XFree(GLX_dpy->visuals);
if (GLX_dpy->fbconfigs)
XFree(GLX_dpy->fbconfigs);
if (!disp->PlatformDisplay)
XCloseDisplay(GLX_dpy->dpy);
free(GLX_dpy);
disp->DriverData = NULL;
return EGL_TRUE;
}
/**
* Called via eglCreateContext(), drv->API.CreateContext().
*/
static _EGLContext *
GLX_eglCreateContext(_EGLDriver *drv, _EGLDisplay *disp, _EGLConfig *conf,
_EGLContext *share_list, const EGLint *attrib_list)
{
struct GLX_egl_driver *GLX_drv = GLX_egl_driver(drv);
struct GLX_egl_context *GLX_ctx = CALLOC_STRUCT(GLX_egl_context);
struct GLX_egl_display *GLX_dpy = GLX_egl_display(disp);
struct GLX_egl_context *GLX_ctx_shared = GLX_egl_context(share_list);
if (!GLX_ctx) {
_eglError(EGL_BAD_ALLOC, "eglCreateContext");
return NULL;
}
if (!_eglInitContext(&GLX_ctx->Base, disp, conf, attrib_list)) {
free(GLX_ctx);
return NULL;
}
if (GLX_dpy->have_fbconfig) {
GLX_ctx->context = GLX_drv->glXCreateNewContext(GLX_dpy->dpy,
GLX_dpy->fbconfigs[GLX_egl_config_index(conf)],
GLX_RGBA_TYPE,
GLX_ctx_shared ? GLX_ctx_shared->context : NULL,
GL_TRUE);
}
else {
GLX_ctx->context = GLX_drv->glXCreateContext(GLX_dpy->dpy,
&GLX_dpy->visuals[GLX_egl_config_index(conf)],
GLX_ctx_shared ? GLX_ctx_shared->context : NULL,
GL_TRUE);
}
if (!GLX_ctx->context) {
free(GLX_ctx);
return NULL;
}
return &GLX_ctx->Base;
}
/**
* Destroy a surface. The display is allowed to be uninitialized.
*/
static void
destroy_surface(_EGLDisplay *disp, _EGLSurface *surf)
{
struct GLX_egl_display *GLX_dpy = GLX_egl_display(disp);
struct GLX_egl_surface *GLX_surf = GLX_egl_surface(surf);
if (GLX_surf->destroy)
GLX_surf->destroy(GLX_dpy->dpy, GLX_surf->glx_drawable);
free(GLX_surf);
}
/**
* Called via eglMakeCurrent(), drv->API.MakeCurrent().
*/
static EGLBoolean
GLX_eglMakeCurrent(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *dsurf,
_EGLSurface *rsurf, _EGLContext *ctx)
{
struct GLX_egl_driver *GLX_drv = GLX_egl_driver(drv);
struct GLX_egl_display *GLX_dpy = GLX_egl_display(disp);
struct GLX_egl_surface *GLX_dsurf = GLX_egl_surface(dsurf);
struct GLX_egl_surface *GLX_rsurf = GLX_egl_surface(rsurf);
struct GLX_egl_context *GLX_ctx = GLX_egl_context(ctx);
_EGLContext *old_ctx;
_EGLSurface *old_dsurf, *old_rsurf;
GLXDrawable ddraw, rdraw;
GLXContext cctx;
EGLBoolean ret = EGL_FALSE;
/* make new bindings */
if (!_eglBindContext(ctx, dsurf, rsurf, &old_ctx, &old_dsurf, &old_rsurf))
return EGL_FALSE;
ddraw = (GLX_dsurf) ? GLX_dsurf->glx_drawable : None;
rdraw = (GLX_rsurf) ? GLX_rsurf->glx_drawable : None;
cctx = (GLX_ctx) ? GLX_ctx->context : NULL;
if (GLX_dpy->have_make_current_read)
ret = GLX_drv->glXMakeContextCurrent(GLX_dpy->dpy, ddraw, rdraw, cctx);
else if (ddraw == rdraw)
ret = GLX_drv->glXMakeCurrent(GLX_dpy->dpy, ddraw, cctx);
if (ret) {
if (_eglPutSurface(old_dsurf))
destroy_surface(disp, old_dsurf);
if (_eglPutSurface(old_rsurf))
destroy_surface(disp, old_rsurf);
/* no destroy? */
_eglPutContext(old_ctx);
}
else {
/* undo the previous _eglBindContext */
_eglBindContext(old_ctx, old_dsurf, old_rsurf, &ctx, &dsurf, &rsurf);
assert(&GLX_ctx->Base == ctx &&
&GLX_dsurf->Base == dsurf &&
&GLX_rsurf->Base == rsurf);
_eglPutSurface(dsurf);
_eglPutSurface(rsurf);
_eglPutContext(ctx);
_eglPutSurface(old_dsurf);
_eglPutSurface(old_rsurf);
_eglPutContext(old_ctx);
}
return ret;
}
/** Get size of given window */
static Status
get_drawable_size(Display *dpy, Drawable d, uint *width, uint *height)
{
Window root;
Status stat;
int xpos, ypos;
unsigned int w, h, bw, depth;
stat = XGetGeometry(dpy, d, &root, &xpos, &ypos, &w, &h, &bw, &depth);
*width = w;
*height = h;
return stat;
}
/**
* Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
*/
static _EGLSurface *
GLX_eglCreateWindowSurface(_EGLDriver *drv, _EGLDisplay *disp,
_EGLConfig *conf, EGLNativeWindowType window,
const EGLint *attrib_list)
{
struct GLX_egl_driver *GLX_drv = GLX_egl_driver(drv);
struct GLX_egl_display *GLX_dpy = GLX_egl_display(disp);
struct GLX_egl_surface *GLX_surf;
uint width, height;
GLX_surf = CALLOC_STRUCT(GLX_egl_surface);
if (!GLX_surf) {
_eglError(EGL_BAD_ALLOC, "eglCreateWindowSurface");
return NULL;
}
if (!_eglInitSurface(&GLX_surf->Base, disp, EGL_WINDOW_BIT,
conf, attrib_list)) {
free(GLX_surf);
return NULL;
}
GLX_surf->drawable = window;
if (GLX_dpy->have_1_3 && !GLX_dpy->glx_window_quirk) {
GLX_surf->glx_drawable = GLX_drv->glXCreateWindow(GLX_dpy->dpy,
GLX_dpy->fbconfigs[GLX_egl_config_index(conf)],
GLX_surf->drawable, NULL);
}
else {
GLX_surf->glx_drawable = GLX_surf->drawable;
}
if (!GLX_surf->glx_drawable) {
free(GLX_surf);
return NULL;
}
if (GLX_dpy->have_1_3 && !GLX_dpy->glx_window_quirk)
GLX_surf->destroy = GLX_drv->glXDestroyWindow;
get_drawable_size(GLX_dpy->dpy, window, &width, &height);
GLX_surf->Base.Width = width;
GLX_surf->Base.Height = height;
return &GLX_surf->Base;
}
static _EGLSurface *
GLX_eglCreatePixmapSurface(_EGLDriver *drv, _EGLDisplay *disp,
_EGLConfig *conf, EGLNativePixmapType pixmap,
const EGLint *attrib_list)
{
struct GLX_egl_driver *GLX_drv = GLX_egl_driver(drv);
struct GLX_egl_display *GLX_dpy = GLX_egl_display(disp);
struct GLX_egl_surface *GLX_surf;
uint width, height;
GLX_surf = CALLOC_STRUCT(GLX_egl_surface);
if (!GLX_surf) {
_eglError(EGL_BAD_ALLOC, "eglCreatePixmapSurface");
return NULL;
}
if (!_eglInitSurface(&GLX_surf->Base, disp, EGL_PIXMAP_BIT,
conf, attrib_list)) {
free(GLX_surf);
return NULL;
}
GLX_surf->drawable = pixmap;
if (GLX_dpy->have_1_3) {
GLX_surf->glx_drawable = GLX_drv->glXCreatePixmap(GLX_dpy->dpy,
GLX_dpy->fbconfigs[GLX_egl_config_index(conf)],
GLX_surf->drawable, NULL);
}
else if (GLX_dpy->have_fbconfig) {
GLXFBConfig fbconfig = GLX_dpy->fbconfigs[GLX_egl_config_index(conf)];
XVisualInfo *vinfo;
vinfo = GLX_drv->glXGetVisualFromFBConfig(GLX_dpy->dpy, fbconfig);
if (vinfo) {
GLX_surf->glx_drawable = GLX_drv->glXCreateGLXPixmap(GLX_dpy->dpy,
vinfo, GLX_surf->drawable);
XFree(vinfo);
}
}
else {
GLX_surf->glx_drawable = GLX_drv->glXCreateGLXPixmap(GLX_dpy->dpy,
&GLX_dpy->visuals[GLX_egl_config_index(conf)],
GLX_surf->drawable);
}
if (!GLX_surf->glx_drawable) {
free(GLX_surf);
return NULL;
}
GLX_surf->destroy = (GLX_dpy->have_1_3) ?
GLX_drv->glXDestroyPixmap : GLX_drv->glXDestroyGLXPixmap;
get_drawable_size(GLX_dpy->dpy, pixmap, &width, &height);
GLX_surf->Base.Width = width;
GLX_surf->Base.Height = height;
return &GLX_surf->Base;
}
static _EGLSurface *
GLX_eglCreatePbufferSurface(_EGLDriver *drv, _EGLDisplay *disp,
_EGLConfig *conf, const EGLint *attrib_list)
{
struct GLX_egl_driver *GLX_drv = GLX_egl_driver(drv);
struct GLX_egl_display *GLX_dpy = GLX_egl_display(disp);
struct GLX_egl_surface *GLX_surf;
int attribs[5];
int i;
GLX_surf = CALLOC_STRUCT(GLX_egl_surface);
if (!GLX_surf) {
_eglError(EGL_BAD_ALLOC, "eglCreatePbufferSurface");
return NULL;
}
if (!_eglInitSurface(&GLX_surf->Base, disp, EGL_PBUFFER_BIT,
conf, attrib_list)) {
free(GLX_surf);
return NULL;
}
i = 0;
attribs[i] = None;
GLX_surf->drawable = None;
if (GLX_dpy->have_1_3) {
/* put geometry in attribs */
if (GLX_surf->Base.Width) {
attribs[i++] = GLX_PBUFFER_WIDTH;
attribs[i++] = GLX_surf->Base.Width;
}
if (GLX_surf->Base.Height) {
attribs[i++] = GLX_PBUFFER_HEIGHT;
attribs[i++] = GLX_surf->Base.Height;
}
attribs[i] = None;
GLX_surf->glx_drawable = GLX_drv->glXCreatePbuffer(GLX_dpy->dpy,
GLX_dpy->fbconfigs[GLX_egl_config_index(conf)], attribs);
}
else if (GLX_dpy->have_pbuffer) {
GLX_surf->glx_drawable = GLX_drv->glXCreateGLXPbufferSGIX(GLX_dpy->dpy,
GLX_dpy->fbconfigs[GLX_egl_config_index(conf)],
GLX_surf->Base.Width,
GLX_surf->Base.Height,
attribs);
}
if (!GLX_surf->glx_drawable) {
free(GLX_surf);
return NULL;
}
GLX_surf->destroy = (GLX_dpy->have_1_3) ?
GLX_drv->glXDestroyPbuffer : GLX_drv->glXDestroyGLXPbufferSGIX;
return &GLX_surf->Base;
}
static EGLBoolean
GLX_eglDestroySurface(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
{
(void) drv;
if (_eglPutSurface(surf))
destroy_surface(disp, surf);
return EGL_TRUE;
}
static EGLBoolean
GLX_eglSwapBuffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
{
struct GLX_egl_driver *GLX_drv = GLX_egl_driver(drv);
struct GLX_egl_display *GLX_dpy = GLX_egl_display(disp);
struct GLX_egl_surface *GLX_surf = GLX_egl_surface(draw);
GLX_drv->glXSwapBuffers(GLX_dpy->dpy, GLX_surf->glx_drawable);
return EGL_TRUE;
}
/*
* Called from eglGetProcAddress() via drv->API.GetProcAddress().
*/
static _EGLProc
GLX_eglGetProcAddress(_EGLDriver *drv, const char *procname)
{
struct GLX_egl_driver *GLX_drv = GLX_egl_driver(drv);
return (_EGLProc) GLX_drv->glXGetProcAddress((const GLubyte *) procname);
}
static EGLBoolean
GLX_eglWaitClient(_EGLDriver *drv, _EGLDisplay *dpy, _EGLContext *ctx)
{
struct GLX_egl_driver *GLX_drv = GLX_egl_driver(drv);
(void) dpy;
(void) ctx;
GLX_drv->glXWaitGL();
return EGL_TRUE;
}
static EGLBoolean
GLX_eglWaitNative(_EGLDriver *drv, _EGLDisplay *dpy, EGLint engine)
{
struct GLX_egl_driver *GLX_drv = GLX_egl_driver(drv);
(void) dpy;
if (engine != EGL_CORE_NATIVE_ENGINE)
return _eglError(EGL_BAD_PARAMETER, "eglWaitNative");
GLX_drv->glXWaitX();
return EGL_TRUE;
}
static void
GLX_Unload(_EGLDriver *drv)
{
struct GLX_egl_driver *GLX_drv = GLX_egl_driver(drv);
if (GLX_drv->handle)
dlclose(GLX_drv->handle);
free(GLX_drv);
}
static EGLBoolean
GLX_Load(_EGLDriver *drv)
{
struct GLX_egl_driver *GLX_drv = GLX_egl_driver(drv);
void *handle;
handle = dlopen("libGL.so", RTLD_LAZY | RTLD_LOCAL);
if (!handle)
goto fail;
GLX_drv->glXGetProcAddress = dlsym(handle, "glXGetProcAddress");
if (!GLX_drv->glXGetProcAddress)
GLX_drv->glXGetProcAddress = dlsym(handle, "glXGetProcAddressARB");
if (!GLX_drv->glXGetProcAddress)
goto fail;
#define GET_PROC(proc_type, proc_name, check) \
do { \
GLX_drv->proc_name = (proc_type) \
GLX_drv->glXGetProcAddress((const GLubyte *) #proc_name); \
if (check && !GLX_drv->proc_name) goto fail; \
} while (0)
/* GLX 1.0 */
GET_PROC(GLXCREATECONTEXTPROC, glXCreateContext, EGL_TRUE);
GET_PROC(GLXDESTROYCONTEXTPROC, glXDestroyContext, EGL_TRUE);
GET_PROC(GLXMAKECURRENTPROC, glXMakeCurrent, EGL_TRUE);
GET_PROC(GLXSWAPBUFFERSPROC, glXSwapBuffers, EGL_TRUE);
GET_PROC(GLXCREATEGLXPIXMAPPROC, glXCreateGLXPixmap, EGL_TRUE);
GET_PROC(GLXDESTROYGLXPIXMAPPROC, glXDestroyGLXPixmap, EGL_TRUE);
GET_PROC(GLXQUERYVERSIONPROC, glXQueryVersion, EGL_TRUE);
GET_PROC(GLXGETCONFIGPROC, glXGetConfig, EGL_TRUE);
GET_PROC(GLXWAITGLPROC, glXWaitGL, EGL_TRUE);
GET_PROC(GLXWAITXPROC, glXWaitX, EGL_TRUE);
/* GLX 1.1 */
GET_PROC(GLXQUERYEXTENSIONSSTRINGPROC, glXQueryExtensionsString, EGL_TRUE);
GET_PROC(GLXQUERYSERVERSTRINGPROC, glXQueryServerString, EGL_TRUE);
GET_PROC(GLXGETCLIENTSTRINGPROC, glXGetClientString, EGL_TRUE);
/* GLX 1.3 */
GET_PROC(PFNGLXGETFBCONFIGSPROC, glXGetFBConfigs, EGL_FALSE);
GET_PROC(PFNGLXGETFBCONFIGATTRIBPROC, glXGetFBConfigAttrib, EGL_FALSE);
GET_PROC(PFNGLXGETVISUALFROMFBCONFIGPROC, glXGetVisualFromFBConfig, EGL_FALSE);
GET_PROC(PFNGLXCREATEWINDOWPROC, glXCreateWindow, EGL_FALSE);
GET_PROC(PFNGLXDESTROYWINDOWPROC, glXDestroyWindow, EGL_FALSE);
GET_PROC(PFNGLXCREATEPIXMAPPROC, glXCreatePixmap, EGL_FALSE);
GET_PROC(PFNGLXDESTROYPIXMAPPROC, glXDestroyPixmap, EGL_FALSE);
GET_PROC(PFNGLXCREATEPBUFFERPROC, glXCreatePbuffer, EGL_FALSE);
GET_PROC(PFNGLXDESTROYPBUFFERPROC, glXDestroyPbuffer, EGL_FALSE);
GET_PROC(PFNGLXCREATENEWCONTEXTPROC, glXCreateNewContext, EGL_FALSE);
GET_PROC(PFNGLXMAKECONTEXTCURRENTPROC, glXMakeContextCurrent, EGL_FALSE);
/* GLX_SGIX_pbuffer */
GET_PROC(PFNGLXCREATEGLXPBUFFERSGIXPROC,
glXCreateGLXPbufferSGIX, EGL_FALSE);
GET_PROC(PFNGLXDESTROYGLXPBUFFERSGIXPROC,
glXDestroyGLXPbufferSGIX, EGL_FALSE);
#undef GET_PROC
GLX_drv->handle = handle;
return EGL_TRUE;
fail:
if (handle)
dlclose(handle);
return EGL_FALSE;
}
/**
* This is the main entrypoint into the driver, called by libEGL.
* Create a new _EGLDriver object and init its dispatch table.
*/
_EGLDriver *
_EGL_MAIN(const char *args)
{
struct GLX_egl_driver *GLX_drv = CALLOC_STRUCT(GLX_egl_driver);
(void) args;
if (!GLX_drv)
return NULL;
if (!GLX_Load(&GLX_drv->Base)) {
_eglLog(_EGL_WARNING, "GLX: failed to load GLX");
free(GLX_drv);
return NULL;
}
_eglInitDriverFallbacks(&GLX_drv->Base);
GLX_drv->Base.API.Initialize = GLX_eglInitialize;
GLX_drv->Base.API.Terminate = GLX_eglTerminate;
GLX_drv->Base.API.CreateContext = GLX_eglCreateContext;
GLX_drv->Base.API.MakeCurrent = GLX_eglMakeCurrent;
GLX_drv->Base.API.CreateWindowSurface = GLX_eglCreateWindowSurface;
GLX_drv->Base.API.CreatePixmapSurface = GLX_eglCreatePixmapSurface;
GLX_drv->Base.API.CreatePbufferSurface = GLX_eglCreatePbufferSurface;
GLX_drv->Base.API.DestroySurface = GLX_eglDestroySurface;
GLX_drv->Base.API.SwapBuffers = GLX_eglSwapBuffers;
GLX_drv->Base.API.GetProcAddress = GLX_eglGetProcAddress;
GLX_drv->Base.API.WaitClient = GLX_eglWaitClient;
GLX_drv->Base.API.WaitNative = GLX_eglWaitNative;
GLX_drv->Base.Name = "GLX";
GLX_drv->Base.Unload = GLX_Unload;
return &GLX_drv->Base;
}
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