diff options
Diffstat (limited to 'src/glx/indirect_glx.c')
| -rw-r--r-- | src/glx/indirect_glx.c | 456 |
1 files changed, 456 insertions, 0 deletions
diff --git a/src/glx/indirect_glx.c b/src/glx/indirect_glx.c new file mode 100644 index 00000000000..f0598409cd6 --- /dev/null +++ b/src/glx/indirect_glx.c @@ -0,0 +1,456 @@ +/* + * Copyright © 2010 Intel Corporation + * + * 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: + * Kristian Høgsberg ([email protected]) + */ + +#include "glapi.h" +#include "glxclient.h" + +extern struct _glapi_table *__glXNewIndirectAPI(void); + +/* +** All indirect rendering contexts will share the same indirect dispatch table. +*/ +static struct _glapi_table *IndirectAPI = NULL; + +static void +indirect_destroy_context(struct glx_context *gc) +{ + if (!gc->imported && gc->xid) + glx_send_destroy_context(gc->psc->dpy, gc->xid); + + __glXFreeVertexArrayState(gc); + + if (gc->vendor) + XFree((char *) gc->vendor); + if (gc->renderer) + XFree((char *) gc->renderer); + if (gc->version) + XFree((char *) gc->version); + if (gc->extensions) + XFree((char *) gc->extensions); + __glFreeAttributeState(gc); + XFree((char *) gc->buf); + Xfree((char *) gc->client_state_private); + XFree((char *) gc); +} + +static Bool +SendMakeCurrentRequest(Display * dpy, CARD8 opcode, + GLXContextID gc_id, GLXContextTag gc_tag, + GLXDrawable draw, GLXDrawable read, + xGLXMakeCurrentReply * reply) +{ + Bool ret; + + LockDisplay(dpy); + + if (draw == read) { + xGLXMakeCurrentReq *req; + + GetReq(GLXMakeCurrent, req); + req->reqType = opcode; + req->glxCode = X_GLXMakeCurrent; + req->drawable = draw; + req->context = gc_id; + req->oldContextTag = gc_tag; + } + else { + struct glx_display *priv = __glXInitialize(dpy); + + /* If the server can support the GLX 1.3 version, we should + * perfer that. Not only that, some servers support GLX 1.3 but + * not the SGI extension. + */ + + if ((priv->majorVersion > 1) || (priv->minorVersion >= 3)) { + xGLXMakeContextCurrentReq *req; + + GetReq(GLXMakeContextCurrent, req); + req->reqType = opcode; + req->glxCode = X_GLXMakeContextCurrent; + req->drawable = draw; + req->readdrawable = read; + req->context = gc_id; + req->oldContextTag = gc_tag; + } + else { + xGLXVendorPrivateWithReplyReq *vpreq; + xGLXMakeCurrentReadSGIReq *req; + + GetReqExtra(GLXVendorPrivateWithReply, + sz_xGLXMakeCurrentReadSGIReq - + sz_xGLXVendorPrivateWithReplyReq, vpreq); + req = (xGLXMakeCurrentReadSGIReq *) vpreq; + req->reqType = opcode; + req->glxCode = X_GLXVendorPrivateWithReply; + req->vendorCode = X_GLXvop_MakeCurrentReadSGI; + req->drawable = draw; + req->readable = read; + req->context = gc_id; + req->oldContextTag = gc_tag; + } + } + + ret = _XReply(dpy, (xReply *) reply, 0, False); + + UnlockDisplay(dpy); + SyncHandle(); + + return ret; +} + +static int +indirect_bind_context(struct glx_context *gc, struct glx_context *old, + GLXDrawable draw, GLXDrawable read) +{ + xGLXMakeCurrentReply reply; + GLXContextTag tag; + __GLXattribute *state; + Display *dpy = gc->psc->dpy; + int opcode = __glXSetupForCommand(dpy); + + if (old != &dummyContext && !old->isDirect && old->psc->dpy == dpy) + tag = old->currentContextTag; + else + tag = None; + + SendMakeCurrentRequest(dpy, opcode, gc->xid, tag, draw, read, &reply); + + if (!IndirectAPI) + IndirectAPI = __glXNewIndirectAPI(); + _glapi_set_dispatch(IndirectAPI); + + gc->currentContextTag = reply.contextTag; + state = gc->client_state_private; + if (state->array_state == NULL) { + glGetString(GL_EXTENSIONS); + glGetString(GL_VERSION); + __glXInitVertexArrayState(gc); + } + + return Success; +} + +static void +indirect_unbind_context(struct glx_context *gc, struct glx_context *new) +{ + Display *dpy = gc->psc->dpy; + int opcode = __glXSetupForCommand(dpy); + xGLXMakeCurrentReply reply; + + /* We are either switching to no context, away from a indirect + * context to a direct context or from one dpy to another and have + * to send a request to the dpy to unbind the previous context. + */ + if (!new || new->isDirect || new->psc->dpy != dpy) + SendMakeCurrentRequest(dpy, opcode, None, + gc->currentContextTag, None, None, &reply); + gc->currentContextTag = 0; +} + +static void +indirect_wait_gl(struct glx_context *gc) +{ + xGLXWaitGLReq *req; + Display *dpy = gc->currentDpy; + + /* Flush any pending commands out */ + __glXFlushRenderBuffer(gc, gc->pc); + + /* Send the glXWaitGL request */ + LockDisplay(dpy); + GetReq(GLXWaitGL, req); + req->reqType = gc->majorOpcode; + req->glxCode = X_GLXWaitGL; + req->contextTag = gc->currentContextTag; + UnlockDisplay(dpy); + SyncHandle(); +} + +static void +indirect_wait_x(struct glx_context *gc) +{ + xGLXWaitXReq *req; + Display *dpy = gc->currentDpy; + + /* Flush any pending commands out */ + __glXFlushRenderBuffer(gc, gc->pc); + + LockDisplay(dpy); + GetReq(GLXWaitX, req); + req->reqType = gc->majorOpcode; + req->glxCode = X_GLXWaitX; + req->contextTag = gc->currentContextTag; + UnlockDisplay(dpy); + SyncHandle(); +} + +static void +indirect_use_x_font(struct glx_context *gc, + Font font, int first, int count, int listBase) +{ + xGLXUseXFontReq *req; + Display *dpy = gc->currentDpy; + + /* Flush any pending commands out */ + __glXFlushRenderBuffer(gc, gc->pc); + + /* Send the glXUseFont request */ + LockDisplay(dpy); + GetReq(GLXUseXFont, req); + req->reqType = gc->majorOpcode; + req->glxCode = X_GLXUseXFont; + req->contextTag = gc->currentContextTag; + req->font = font; + req->first = first; + req->count = count; + req->listBase = listBase; + UnlockDisplay(dpy); + SyncHandle(); +} + +static void +indirect_bind_tex_image(Display * dpy, + GLXDrawable drawable, + int buffer, const int *attrib_list) +{ + xGLXVendorPrivateReq *req; + struct glx_context *gc = __glXGetCurrentContext(); + CARD32 *drawable_ptr; + INT32 *buffer_ptr; + CARD32 *num_attrib_ptr; + CARD32 *attrib_ptr; + CARD8 opcode; + unsigned int i; + + i = 0; + if (attrib_list) { + while (attrib_list[i * 2] != None) + i++; + } + + opcode = __glXSetupForCommand(dpy); + if (!opcode) + return; + + LockDisplay(dpy); + GetReqExtra(GLXVendorPrivate, 12 + 8 * i, req); + req->reqType = opcode; + req->glxCode = X_GLXVendorPrivate; + req->vendorCode = X_GLXvop_BindTexImageEXT; + req->contextTag = gc->currentContextTag; + + drawable_ptr = (CARD32 *) (req + 1); + buffer_ptr = (INT32 *) (drawable_ptr + 1); + num_attrib_ptr = (CARD32 *) (buffer_ptr + 1); + attrib_ptr = (CARD32 *) (num_attrib_ptr + 1); + + *drawable_ptr = drawable; + *buffer_ptr = buffer; + *num_attrib_ptr = (CARD32) i; + + i = 0; + if (attrib_list) { + while (attrib_list[i * 2] != None) { + *attrib_ptr++ = (CARD32) attrib_list[i * 2 + 0]; + *attrib_ptr++ = (CARD32) attrib_list[i * 2 + 1]; + i++; + } + } + + UnlockDisplay(dpy); + SyncHandle(); +} + +static void +indirect_release_tex_image(Display * dpy, GLXDrawable drawable, int buffer) +{ + xGLXVendorPrivateReq *req; + struct glx_context *gc = __glXGetCurrentContext(); + CARD32 *drawable_ptr; + INT32 *buffer_ptr; + CARD8 opcode; + + opcode = __glXSetupForCommand(dpy); + if (!opcode) + return; + + LockDisplay(dpy); + GetReqExtra(GLXVendorPrivate, sizeof(CARD32) + sizeof(INT32), req); + req->reqType = opcode; + req->glxCode = X_GLXVendorPrivate; + req->vendorCode = X_GLXvop_ReleaseTexImageEXT; + req->contextTag = gc->currentContextTag; + + drawable_ptr = (CARD32 *) (req + 1); + buffer_ptr = (INT32 *) (drawable_ptr + 1); + + *drawable_ptr = drawable; + *buffer_ptr = buffer; + + UnlockDisplay(dpy); + SyncHandle(); +} + +static const struct glx_context_vtable indirect_context_vtable = { + indirect_destroy_context, + indirect_bind_context, + indirect_unbind_context, + indirect_wait_gl, + indirect_wait_x, + indirect_use_x_font, + indirect_bind_tex_image, + indirect_release_tex_image, +}; + +/** + * \todo Eliminate \c __glXInitVertexArrayState. Replace it with a new + * function called \c __glXAllocateClientState that allocates the memory and + * does all the initialization (including the pixel pack / unpack). + */ +_X_HIDDEN struct glx_context * +indirect_create_context(struct glx_screen *psc, + struct glx_config *mode, + struct glx_context *shareList, int renderType) +{ + struct glx_context *gc; + int bufSize; + CARD8 opcode; + __GLXattribute *state; + + opcode = __glXSetupForCommand(psc->dpy); + if (!opcode) { + return NULL; + } + + /* Allocate our context record */ + gc = Xmalloc(sizeof *gc); + if (!gc) { + /* Out of memory */ + return NULL; + } + memset(gc, 0, sizeof *gc); + + glx_context_init(gc, psc, mode); + gc->isDirect = GL_FALSE; + gc->vtable = &indirect_context_vtable; + state = Xmalloc(sizeof(struct __GLXattributeRec)); + if (state == NULL) { + /* Out of memory */ + Xfree(gc); + return NULL; + } + gc->client_state_private = state; + memset(gc->client_state_private, 0, sizeof(struct __GLXattributeRec)); + state->NoDrawArraysProtocol = (getenv("LIBGL_NO_DRAWARRAYS") != NULL); + + /* + ** Create a temporary buffer to hold GLX rendering commands. The size + ** of the buffer is selected so that the maximum number of GLX rendering + ** commands can fit in a single X packet and still have room in the X + ** packet for the GLXRenderReq header. + */ + + bufSize = (XMaxRequestSize(psc->dpy) * 4) - sz_xGLXRenderReq; + gc->buf = (GLubyte *) Xmalloc(bufSize); + if (!gc->buf) { + Xfree(gc->client_state_private); + Xfree(gc); + return NULL; + } + gc->bufSize = bufSize; + + /* Fill in the new context */ + gc->renderMode = GL_RENDER; + + state->storePack.alignment = 4; + state->storeUnpack.alignment = 4; + + gc->attributes.stackPointer = &gc->attributes.stack[0]; + + /* + ** PERFORMANCE NOTE: A mode dependent fill image can speed things up. + ** Other code uses the fastImageUnpack bit, but it is never set + ** to GL_TRUE. + */ + gc->fastImageUnpack = GL_FALSE; + gc->fillImage = __glFillImage; + gc->pc = gc->buf; + gc->bufEnd = gc->buf + bufSize; + gc->isDirect = GL_FALSE; + if (__glXDebug) { + /* + ** Set limit register so that there will be one command per packet + */ + gc->limit = gc->buf; + } + else { + gc->limit = gc->buf + bufSize - __GLX_BUFFER_LIMIT_SIZE; + } + gc->majorOpcode = opcode; + + /* + ** Constrain the maximum drawing command size allowed to be + ** transfered using the X_GLXRender protocol request. First + ** constrain by a software limit, then constrain by the protocl + ** limit. + */ + if (bufSize > __GLX_RENDER_CMD_SIZE_LIMIT) { + bufSize = __GLX_RENDER_CMD_SIZE_LIMIT; + } + if (bufSize > __GLX_MAX_RENDER_CMD_SIZE) { + bufSize = __GLX_MAX_RENDER_CMD_SIZE; + } + gc->maxSmallRenderCommandSize = bufSize; + + + return gc; +} + +struct glx_screen_vtable indirect_screen_vtable = { + indirect_create_context +}; + +_X_HIDDEN struct glx_screen * +indirect_create_screen(int screen, struct glx_display * priv) +{ + struct glx_screen *psc; + + psc = Xmalloc(sizeof *psc); + if (psc == NULL) + return NULL; + + memset(psc, 0, sizeof *psc); + glx_screen_init(psc, screen, priv); + psc->vtable = &indirect_screen_vtable; + + return psc; +} |