+++ /dev/null
-/**
- * GLX initialization. Code based on glxext.c, glx_query.c, and
- * glcontextmodes.c under src/glx/. The major difference is that DRI
- * related code is stripped out.
- *
- * If the maintenance of this file takes too much time, we should consider
- * refactoring glxext.c.
- */
-
-#include <assert.h>
-#include <X11/Xlib.h>
-#include <X11/Xproto.h>
-#include <X11/Xlibint.h>
-#include <X11/extensions/Xext.h>
-#include <X11/extensions/extutil.h>
-#include <sys/time.h>
-
-#include "GL/glxproto.h"
-#include "GL/glxtokens.h"
-#include "GL/gl.h" /* for GL types needed by __GLcontextModes */
-#include "glcore.h" /* for __GLcontextModes */
-
-#include "glxinit.h"
-
-#ifdef GLX_DIRECT_RENDERING
-
-typedef struct GLXGenericGetString
-{
- CARD8 reqType;
- CARD8 glxCode;
- CARD16 length B16;
- CARD32 for_whom B32;
- CARD32 name B32;
-} xGLXGenericGetStringReq;
-
-#define sz_xGLXGenericGetStringReq 12
-#define X_GLXGenericGetString 0
-
-/* Extension required boiler plate */
-
-static char *__glXExtensionName = GLX_EXTENSION_NAME;
-static XExtensionInfo *__glXExtensionInfo = NULL;
-
-static int
-__glXCloseDisplay(Display * dpy, XExtCodes * codes)
-{
- return XextRemoveDisplay(__glXExtensionInfo, dpy);
-}
-
-static /* const */ XExtensionHooks __glXExtensionHooks = {
- NULL, /* create_gc */
- NULL, /* copy_gc */
- NULL, /* flush_gc */
- NULL, /* free_gc */
- NULL, /* create_font */
- NULL, /* free_font */
- __glXCloseDisplay, /* close_display */
- NULL, /* wire_to_event */
- NULL, /* event_to_wire */
- NULL, /* error */
- NULL, /* error_string */
-};
-
-static XEXT_GENERATE_FIND_DISPLAY(__glXFindDisplay, __glXExtensionInfo,
- __glXExtensionName, &__glXExtensionHooks,
- __GLX_NUMBER_EVENTS, NULL)
-
-static GLint
-_gl_convert_from_x_visual_type(int visualType)
-{
-#define NUM_VISUAL_TYPES 6
- static const int glx_visual_types[NUM_VISUAL_TYPES] = {
- GLX_STATIC_GRAY, GLX_GRAY_SCALE,
- GLX_STATIC_COLOR, GLX_PSEUDO_COLOR,
- GLX_TRUE_COLOR, GLX_DIRECT_COLOR
- };
-
- return ((unsigned) visualType < NUM_VISUAL_TYPES)
- ? glx_visual_types[visualType] : GLX_NONE;
-}
-
-static void
-_gl_context_modes_destroy(__GLcontextModes * modes)
-{
- while (modes != NULL) {
- __GLcontextModes *const next = modes->next;
-
- free(modes);
- modes = next;
- }
-}
-
-static __GLcontextModes *
-_gl_context_modes_create(unsigned count, size_t minimum_size)
-{
- const size_t size = (minimum_size > sizeof(__GLcontextModes))
- ? minimum_size : sizeof(__GLcontextModes);
- __GLcontextModes *base = NULL;
- __GLcontextModes **next;
- unsigned i;
-
- next = &base;
- for (i = 0; i < count; i++) {
- *next = malloc(size);
- if (*next == NULL) {
- _gl_context_modes_destroy(base);
- base = NULL;
- break;
- }
-
- memset(*next, 0, size);
- (*next)->visualID = GLX_DONT_CARE;
- (*next)->visualType = GLX_DONT_CARE;
- (*next)->visualRating = GLX_NONE;
- (*next)->transparentPixel = GLX_NONE;
- (*next)->transparentRed = GLX_DONT_CARE;
- (*next)->transparentGreen = GLX_DONT_CARE;
- (*next)->transparentBlue = GLX_DONT_CARE;
- (*next)->transparentAlpha = GLX_DONT_CARE;
- (*next)->transparentIndex = GLX_DONT_CARE;
- (*next)->xRenderable = GLX_DONT_CARE;
- (*next)->fbconfigID = GLX_DONT_CARE;
- (*next)->swapMethod = GLX_SWAP_UNDEFINED_OML;
- (*next)->bindToTextureRgb = GLX_DONT_CARE;
- (*next)->bindToTextureRgba = GLX_DONT_CARE;
- (*next)->bindToMipmapTexture = GLX_DONT_CARE;
- (*next)->bindToTextureTargets = GLX_DONT_CARE;
- (*next)->yInverted = GLX_DONT_CARE;
-
- next = &((*next)->next);
- }
-
- return base;
-}
-
-static char *
-__glXQueryServerString(Display * dpy, int opcode, CARD32 screen, CARD32 name)
-{
- xGLXGenericGetStringReq *req;
- xGLXSingleReply reply;
- int length;
- int numbytes;
- char *buf;
- CARD32 for_whom = screen;
- CARD32 glxCode = X_GLXQueryServerString;
-
-
- LockDisplay(dpy);
-
-
- /* All of the GLX protocol requests for getting a string from the server
- * look the same. The exact meaning of the for_whom field is usually
- * either the screen number (for glXQueryServerString) or the context tag
- * (for GLXSingle).
- */
-
- GetReq(GLXGenericGetString, req);
- req->reqType = opcode;
- req->glxCode = glxCode;
- req->for_whom = for_whom;
- req->name = name;
-
- _XReply(dpy, (xReply *) & reply, 0, False);
-
- length = reply.length * 4;
- numbytes = reply.size;
-
- buf = malloc(numbytes);
- if (buf != NULL) {
- _XRead(dpy, buf, numbytes);
- length -= numbytes;
- }
-
- _XEatData(dpy, length);
-
- UnlockDisplay(dpy);
- SyncHandle();
-
- return buf;
-}
-
-/************************************************************************/
-/*
-** Free the per screen configs data as well as the array of
-** __glXScreenConfigs.
-*/
-static void
-FreeScreenConfigs(__GLXdisplayPrivate * priv)
-{
- __GLXscreenConfigs *psc;
- GLint i, screens;
-
- /* Free screen configuration information */
- screens = ScreenCount(priv->dpy);
- for (i = 0; i < screens; i++) {
- psc = priv->screenConfigs[i];
- if (!psc)
- continue;
- if (psc->configs) {
- _gl_context_modes_destroy(psc->configs);
- psc->configs = NULL; /* NOTE: just for paranoia */
- }
- free((char *) psc->serverGLXexts);
- }
- free((char *) priv->screenConfigs);
- priv->screenConfigs = NULL;
-}
-
-/*
-** Release the private memory referred to in a display private
-** structure. The caller will free the extension structure.
-*/
-static int
-__glXFreeDisplayPrivate(XExtData * extension)
-{
- __GLXdisplayPrivate *priv;
-
- priv = (__GLXdisplayPrivate *) extension->private_data;
- FreeScreenConfigs(priv);
- free((char *) priv->serverGLXversion);
- free((char *) priv);
- return 0;
-}
-
-/************************************************************************/
-
-/*
-** Query the version of the GLX extension. This procedure works even if
-** the client extension is not completely set up.
-*/
-
-#define GLX_MAJOR_VERSION 1 /* current version numbers */
-#define GLX_MINOR_VERSION 4
-
-static Bool
-QueryVersion(Display * dpy, int opcode, int *major, int *minor)
-{
- xGLXQueryVersionReq *req;
- xGLXQueryVersionReply reply;
-
- /* Send the glXQueryVersion request */
- LockDisplay(dpy);
- GetReq(GLXQueryVersion, req);
- req->reqType = opcode;
- req->glxCode = X_GLXQueryVersion;
- req->majorVersion = GLX_MAJOR_VERSION;
- req->minorVersion = GLX_MINOR_VERSION;
- _XReply(dpy, (xReply *) & reply, 0, False);
- UnlockDisplay(dpy);
- SyncHandle();
-
- if (reply.majorVersion != GLX_MAJOR_VERSION) {
- /*
- ** The server does not support the same major release as this
- ** client.
- */
- return GL_FALSE;
- }
- *major = reply.majorVersion;
- *minor = min(reply.minorVersion, GLX_MINOR_VERSION);
- return GL_TRUE;
-}
-
-#define __GLX_MIN_CONFIG_PROPS 18
-#define __GLX_MAX_CONFIG_PROPS 500
-#define __GLX_EXT_CONFIG_PROPS 10
-#define __GLX_TOTAL_CONFIG (__GLX_MIN_CONFIG_PROPS + \
- 2 * __GLX_EXT_CONFIG_PROPS)
-
-static void
-__glXInitializeVisualConfigFromTags(__GLcontextModes * config, int count,
- const INT32 * bp, Bool tagged_only,
- Bool fbconfig_style_tags)
-{
- int i;
-
- if (!tagged_only) {
- /* Copy in the first set of properties */
- config->visualID = *bp++;
-
- config->visualType = _gl_convert_from_x_visual_type(*bp++);
-
- config->rgbMode = *bp++;
-
- config->redBits = *bp++;
- config->greenBits = *bp++;
- config->blueBits = *bp++;
- config->alphaBits = *bp++;
- config->accumRedBits = *bp++;
- config->accumGreenBits = *bp++;
- config->accumBlueBits = *bp++;
- config->accumAlphaBits = *bp++;
-
- config->doubleBufferMode = *bp++;
- config->stereoMode = *bp++;
-
- config->rgbBits = *bp++;
- config->depthBits = *bp++;
- config->stencilBits = *bp++;
- config->numAuxBuffers = *bp++;
- config->level = *bp++;
-
- count -= __GLX_MIN_CONFIG_PROPS;
- }
-
- /*
- ** Additional properties may be in a list at the end
- ** of the reply. They are in pairs of property type
- ** and property value.
- */
-
-#define FETCH_OR_SET(tag) \
- config-> tag = ( fbconfig_style_tags ) ? *bp++ : 1
-
- for (i = 0; i < count; i += 2) {
- switch (*bp++) {
- case GLX_RGBA:
- FETCH_OR_SET(rgbMode);
- break;
- case GLX_BUFFER_SIZE:
- config->rgbBits = *bp++;
- break;
- case GLX_LEVEL:
- config->level = *bp++;
- break;
- case GLX_DOUBLEBUFFER:
- FETCH_OR_SET(doubleBufferMode);
- break;
- case GLX_STEREO:
- FETCH_OR_SET(stereoMode);
- break;
- case GLX_AUX_BUFFERS:
- config->numAuxBuffers = *bp++;
- break;
- case GLX_RED_SIZE:
- config->redBits = *bp++;
- break;
- case GLX_GREEN_SIZE:
- config->greenBits = *bp++;
- break;
- case GLX_BLUE_SIZE:
- config->blueBits = *bp++;
- break;
- case GLX_ALPHA_SIZE:
- config->alphaBits = *bp++;
- break;
- case GLX_DEPTH_SIZE:
- config->depthBits = *bp++;
- break;
- case GLX_STENCIL_SIZE:
- config->stencilBits = *bp++;
- break;
- case GLX_ACCUM_RED_SIZE:
- config->accumRedBits = *bp++;
- break;
- case GLX_ACCUM_GREEN_SIZE:
- config->accumGreenBits = *bp++;
- break;
- case GLX_ACCUM_BLUE_SIZE:
- config->accumBlueBits = *bp++;
- break;
- case GLX_ACCUM_ALPHA_SIZE:
- config->accumAlphaBits = *bp++;
- break;
- case GLX_VISUAL_CAVEAT_EXT:
- config->visualRating = *bp++;
- break;
- case GLX_X_VISUAL_TYPE:
- config->visualType = *bp++;
- break;
- case GLX_TRANSPARENT_TYPE:
- config->transparentPixel = *bp++;
- break;
- case GLX_TRANSPARENT_INDEX_VALUE:
- config->transparentIndex = *bp++;
- break;
- case GLX_TRANSPARENT_RED_VALUE:
- config->transparentRed = *bp++;
- break;
- case GLX_TRANSPARENT_GREEN_VALUE:
- config->transparentGreen = *bp++;
- break;
- case GLX_TRANSPARENT_BLUE_VALUE:
- config->transparentBlue = *bp++;
- break;
- case GLX_TRANSPARENT_ALPHA_VALUE:
- config->transparentAlpha = *bp++;
- break;
- case GLX_VISUAL_ID:
- config->visualID = *bp++;
- break;
- case GLX_DRAWABLE_TYPE:
- config->drawableType = *bp++;
- break;
- case GLX_RENDER_TYPE:
- config->renderType = *bp++;
- break;
- case GLX_X_RENDERABLE:
- config->xRenderable = *bp++;
- break;
- case GLX_FBCONFIG_ID:
- config->fbconfigID = *bp++;
- break;
- case GLX_MAX_PBUFFER_WIDTH:
- config->maxPbufferWidth = *bp++;
- break;
- case GLX_MAX_PBUFFER_HEIGHT:
- config->maxPbufferHeight = *bp++;
- break;
- case GLX_MAX_PBUFFER_PIXELS:
- config->maxPbufferPixels = *bp++;
- break;
- case GLX_OPTIMAL_PBUFFER_WIDTH_SGIX:
- config->optimalPbufferWidth = *bp++;
- break;
- case GLX_OPTIMAL_PBUFFER_HEIGHT_SGIX:
- config->optimalPbufferHeight = *bp++;
- break;
- case GLX_VISUAL_SELECT_GROUP_SGIX:
- config->visualSelectGroup = *bp++;
- break;
- case GLX_SWAP_METHOD_OML:
- config->swapMethod = *bp++;
- break;
- case GLX_SAMPLE_BUFFERS_SGIS:
- config->sampleBuffers = *bp++;
- break;
- case GLX_SAMPLES_SGIS:
- config->samples = *bp++;
- break;
- case GLX_BIND_TO_TEXTURE_RGB_EXT:
- config->bindToTextureRgb = *bp++;
- break;
- case GLX_BIND_TO_TEXTURE_RGBA_EXT:
- config->bindToTextureRgba = *bp++;
- break;
- case GLX_BIND_TO_MIPMAP_TEXTURE_EXT:
- config->bindToMipmapTexture = *bp++;
- break;
- case GLX_BIND_TO_TEXTURE_TARGETS_EXT:
- config->bindToTextureTargets = *bp++;
- break;
- case GLX_Y_INVERTED_EXT:
- config->yInverted = *bp++;
- break;
- case None:
- i = count;
- break;
- default:
- break;
- }
- }
-
- config->renderType =
- (config->rgbMode) ? GLX_RGBA_BIT : GLX_COLOR_INDEX_BIT;
-
- config->haveAccumBuffer = ((config->accumRedBits +
- config->accumGreenBits +
- config->accumBlueBits +
- config->accumAlphaBits) > 0);
- config->haveDepthBuffer = (config->depthBits > 0);
- config->haveStencilBuffer = (config->stencilBits > 0);
-}
-
-static __GLcontextModes *
-createConfigsFromProperties(Display * dpy, int nvisuals, int nprops,
- int screen, GLboolean tagged_only)
-{
- INT32 buf[__GLX_TOTAL_CONFIG], *props;
- unsigned prop_size;
- __GLcontextModes *modes, *m;
- int i;
-
- if (nprops == 0)
- return NULL;
-
- /* FIXME: Is the __GLX_MIN_CONFIG_PROPS test correct for FBconfigs? */
-
- /* Check number of properties */
- if (nprops < __GLX_MIN_CONFIG_PROPS || nprops > __GLX_MAX_CONFIG_PROPS)
- return NULL;
-
- /* Allocate memory for our config structure */
- modes = _gl_context_modes_create(nvisuals, sizeof(__GLcontextModes));
- if (!modes)
- return NULL;
-
- prop_size = nprops * __GLX_SIZE_INT32;
- if (prop_size <= sizeof(buf))
- props = buf;
- else
- props = malloc(prop_size);
-
- /* Read each config structure and convert it into our format */
- m = modes;
- for (i = 0; i < nvisuals; i++) {
- _XRead(dpy, (char *) props, prop_size);
- /* Older X servers don't send this so we default it here. */
- m->drawableType = GLX_WINDOW_BIT;
- __glXInitializeVisualConfigFromTags(m, nprops, props,
- tagged_only, GL_TRUE);
- m->screen = screen;
- m = m->next;
- }
-
- if (props != buf)
- free(props);
-
- return modes;
-}
-
-static GLboolean
-getFBConfigs(__GLXscreenConfigs *psc, __GLXdisplayPrivate *priv, int screen)
-{
- xGLXGetFBConfigsReq *fb_req;
- xGLXGetFBConfigsSGIXReq *sgi_req;
- xGLXVendorPrivateWithReplyReq *vpreq;
- xGLXGetFBConfigsReply reply;
- Display *dpy = priv->dpy;
-
- psc->serverGLXexts =
- __glXQueryServerString(dpy, priv->majorOpcode, screen, GLX_EXTENSIONS);
-
- LockDisplay(dpy);
-
- psc->configs = NULL;
- if (atof(priv->serverGLXversion) >= 1.3) {
- GetReq(GLXGetFBConfigs, fb_req);
- fb_req->reqType = priv->majorOpcode;
- fb_req->glxCode = X_GLXGetFBConfigs;
- fb_req->screen = screen;
- }
- else if (strstr(psc->serverGLXexts, "GLX_SGIX_fbconfig") != NULL) {
- GetReqExtra(GLXVendorPrivateWithReply,
- sz_xGLXGetFBConfigsSGIXReq +
- sz_xGLXVendorPrivateWithReplyReq, vpreq);
- sgi_req = (xGLXGetFBConfigsSGIXReq *) vpreq;
- sgi_req->reqType = priv->majorOpcode;
- sgi_req->glxCode = X_GLXVendorPrivateWithReply;
- sgi_req->vendorCode = X_GLXvop_GetFBConfigsSGIX;
- sgi_req->screen = screen;
- }
- else
- goto out;
-
- if (!_XReply(dpy, (xReply *) & reply, 0, False))
- goto out;
-
- psc->configs = createConfigsFromProperties(dpy,
- reply.numFBConfigs,
- reply.numAttribs * 2,
- screen, GL_TRUE);
-
- out:
- UnlockDisplay(dpy);
- return psc->configs != NULL;
-}
-
-static GLboolean
-AllocAndFetchScreenConfigs(Display * dpy, __GLXdisplayPrivate * priv)
-{
- __GLXscreenConfigs *psc;
- GLint i, screens;
-
- /*
- ** First allocate memory for the array of per screen configs.
- */
- screens = ScreenCount(dpy);
- priv->screenConfigs = malloc(screens * sizeof *priv->screenConfigs);
- if (!priv->screenConfigs) {
- return GL_FALSE;
- }
-
- priv->serverGLXversion =
- __glXQueryServerString(dpy, priv->majorOpcode, 0, GLX_VERSION);
- if (priv->serverGLXversion == NULL) {
- FreeScreenConfigs(priv);
- return GL_FALSE;
- }
-
- for (i = 0; i < screens; i++) {
- psc = calloc(1, sizeof *psc);
- if (!psc)
- return GL_FALSE;
- getFBConfigs(psc, priv, i);
- priv->screenConfigs[i] = psc;
- }
-
- SyncHandle();
-
- return GL_TRUE;
-}
-
-_X_HIDDEN __GLXdisplayPrivate *
-__glXInitialize(Display * dpy)
-{
- XExtDisplayInfo *info = __glXFindDisplay(dpy);
- XExtData **privList, *private, *found;
- __GLXdisplayPrivate *dpyPriv;
- XEDataObject dataObj;
- int major, minor;
-
- if (!XextHasExtension(info))
- return NULL;
-
- /* See if a display private already exists. If so, return it */
- dataObj.display = dpy;
- privList = XEHeadOfExtensionList(dataObj);
- found = XFindOnExtensionList(privList, info->codes->extension);
- if (found)
- return (__GLXdisplayPrivate *) found->private_data;
-
- /* See if the versions are compatible */
- if (!QueryVersion(dpy, info->codes->major_opcode, &major, &minor))
- return NULL;
-
- /*
- ** Allocate memory for all the pieces needed for this buffer.
- */
- private = malloc(sizeof(XExtData));
- if (!private)
- return NULL;
- dpyPriv = calloc(1, sizeof(__GLXdisplayPrivate));
- if (!dpyPriv) {
- free(private);
- return NULL;
- }
-
- /*
- ** Init the display private and then read in the screen config
- ** structures from the server.
- */
- dpyPriv->majorOpcode = info->codes->major_opcode;
- dpyPriv->dpy = dpy;
-
- if (!AllocAndFetchScreenConfigs(dpy, dpyPriv)) {
- free(dpyPriv);
- free(private);
- return NULL;
- }
-
- /*
- ** Fill in the private structure. This is the actual structure that
- ** hangs off of the Display structure. Our private structure is
- ** referred to by this structure. Got that?
- */
- private->number = info->codes->extension;
- private->next = 0;
- private->free_private = __glXFreeDisplayPrivate;
- private->private_data = (char *) dpyPriv;
- XAddToExtensionList(privList, private);
-
- return dpyPriv;
-}
-
-#endif /* GLX_DIRECT_RENDERING */
projects / mesa.git / blobdiff