mirror of
https://github.com/elwrcl/intel-hard-graphics.git
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1554 lines
42 KiB
C
1554 lines
42 KiB
C
/*
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* Mesa 3-D graphics library
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*
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* Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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/**
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* \file xm_api.c
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*
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* All the XMesa* API functions.
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*
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*
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* NOTES:
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*
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* The window coordinate system origin (0,0) is in the lower-left corner
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* of the window. X11's window coordinate origin is in the upper-left
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* corner of the window. Therefore, most drawing functions in this
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* file have to flip Y coordinates.
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*
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*
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* Byte swapping: If the Mesa host and the X display use a different
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* byte order then there's some trickiness to be aware of when using
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* XImages. The byte ordering used for the XImage is that of the X
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* display, not the Mesa host.
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* The color-to-pixel encoding for True/DirectColor must be done
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* according to the display's visual red_mask, green_mask, and blue_mask.
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* If XPutPixel is used to put a pixel into an XImage then XPutPixel will
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* do byte swapping if needed. If one wants to directly "poke" the pixel
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* into the XImage's buffer then the pixel must be byte swapped first.
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*
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*/
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#ifdef __CYGWIN__
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#undef WIN32
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#undef __WIN32__
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#endif
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#include <stdio.h>
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#include "xm_api.h"
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#include "xm_st.h"
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#include "pipe/p_context.h"
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#include "pipe/p_defines.h"
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#include "pipe/p_screen.h"
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#include "pipe/p_state.h"
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#include "frontend/api.h"
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#include "util/simple_mtx.h"
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#include "util/u_atomic.h"
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#include "util/u_inlines.h"
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#include "util/u_math.h"
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#include "util/u_memory.h"
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#include "hud/hud_context.h"
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#include "main/errors.h"
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#include "main/mtypes.h"
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#include <GL/glx.h>
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#include "state_tracker/st_context.h"
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#include "main/context.h"
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extern struct pipe_screen *
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xlib_create_screen(Display *display);
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/* Default strict invalidate to false. This means we will not call
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* XGetGeometry after every swapbuffers, which allows swapbuffers to
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* remain asynchronous. For apps running at 100fps with synchronous
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* swapping, a 10% boost is typical. For gears, I see closer to 20%
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* speedup.
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*
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* Note that the work of copying data on swapbuffers doesn't disappear
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* - this change just allows the X server to execute the PutImage
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* asynchronously without us effectively blocked until its completion.
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*
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* This speeds up even llvmpipe's threaded rasterization as the
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* swapbuffers operation was a large part of the serial component of
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* an llvmpipe frame.
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*
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* The downside of this is correctness - applications which don't call
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* glViewport on window resizes will get incorrect rendering. A
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* better solution would be to have per-frame but asynchronous
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* invalidation. Xcb almost looks as if it could provide this, but
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* the API doesn't seem to quite be there.
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*/
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DEBUG_GET_ONCE_BOOL_OPTION(xmesa_strict_invalidate, "XMESA_STRICT_INVALIDATE", false)
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bool
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xmesa_strict_invalidate(void)
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{
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return debug_get_option_xmesa_strict_invalidate();
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}
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static int
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xmesa_get_param(struct pipe_frontend_screen *fscreen,
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enum st_manager_param param)
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{
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switch(param) {
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case ST_MANAGER_BROKEN_INVALIDATE:
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return !xmesa_strict_invalidate();
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default:
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return 0;
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}
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}
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/* linked list of XMesaDisplay hooks per display */
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typedef struct _XMesaExtDisplayInfo {
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struct _XMesaExtDisplayInfo *next;
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Display *display;
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struct xmesa_display mesaDisplay;
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} XMesaExtDisplayInfo;
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typedef struct _XMesaExtInfo {
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XMesaExtDisplayInfo *head;
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int ndisplays;
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} XMesaExtInfo;
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static XMesaExtInfo MesaExtInfo;
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/* hook to delete XMesaDisplay on XDestroyDisplay */
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extern void
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xmesa_close_display(Display *display)
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{
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XMesaExtDisplayInfo *info, *prev;
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/* These assertions are not valid since screen creation can fail and result
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* in an empty list
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assert(MesaExtInfo.ndisplays > 0);
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assert(MesaExtInfo.head);
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*/
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_XLockMutex(_Xglobal_lock);
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/* first find display */
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prev = NULL;
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for (info = MesaExtInfo.head; info; info = info->next) {
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if (info->display == display) {
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prev = info;
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break;
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}
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}
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if (info == NULL) {
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/* no display found */
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_XUnlockMutex(_Xglobal_lock);
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return;
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}
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/* remove display entry from list */
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if (prev != MesaExtInfo.head) {
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prev->next = info->next;
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} else {
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MesaExtInfo.head = info->next;
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}
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MesaExtInfo.ndisplays--;
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_XUnlockMutex(_Xglobal_lock);
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/* don't forget to clean up mesaDisplay */
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XMesaDisplay xmdpy = &info->mesaDisplay;
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/**
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* XXX: Don't destroy the screens here, since there may still
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* be some dangling screen pointers that are used after this point
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* if (xmdpy->screen) {
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* xmdpy->screen->destroy(xmdpy->screen);
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* }
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*/
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st_screen_destroy(xmdpy->fscreen);
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free(xmdpy->fscreen);
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XFree((char *) info);
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}
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static XMesaDisplay
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xmesa_init_display( Display *display )
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{
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static simple_mtx_t init_mutex = SIMPLE_MTX_INITIALIZER;
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XMesaDisplay xmdpy;
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XMesaExtDisplayInfo *info;
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if (display == NULL) {
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return NULL;
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}
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simple_mtx_lock(&init_mutex);
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/* Look for XMesaDisplay which corresponds to this display */
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info = MesaExtInfo.head;
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while(info) {
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if (info->display == display) {
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/* Found it */
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simple_mtx_unlock(&init_mutex);
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return &info->mesaDisplay;
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}
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info = info->next;
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}
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/* Not found. Create new XMesaDisplay */
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/* first allocate X-related resources and hook destroy callback */
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/* allocate mesa display info */
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info = (XMesaExtDisplayInfo *) Xmalloc(sizeof(XMesaExtDisplayInfo));
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if (info == NULL) {
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simple_mtx_unlock(&init_mutex);
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return NULL;
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}
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info->display = display;
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xmdpy = &info->mesaDisplay; /* to be filled out below */
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xmdpy->display = display;
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xmdpy->pipe = NULL;
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xmdpy->fscreen = CALLOC_STRUCT(pipe_frontend_screen);
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if (!xmdpy->fscreen) {
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Xfree(info);
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simple_mtx_unlock(&init_mutex);
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return NULL;
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}
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xmdpy->screen = xlib_create_screen(display);
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if (!xmdpy->screen) {
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free(xmdpy->fscreen);
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Xfree(info);
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simple_mtx_unlock(&init_mutex);
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return NULL;
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}
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/* At this point, both fscreen and screen are known to be valid */
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xmdpy->fscreen->screen = xmdpy->screen;
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xmdpy->fscreen->get_param = xmesa_get_param;
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(void) mtx_init(&xmdpy->mutex, mtx_plain);
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/* chain to the list of displays */
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_XLockMutex(_Xglobal_lock);
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info->next = MesaExtInfo.head;
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MesaExtInfo.head = info;
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MesaExtInfo.ndisplays++;
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_XUnlockMutex(_Xglobal_lock);
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simple_mtx_unlock(&init_mutex);
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return xmdpy;
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}
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/**********************************************************************/
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/***** X Utility Functions *****/
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/**********************************************************************/
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/**
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* Return the host's byte order as LSBFirst or MSBFirst ala X.
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*/
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static int host_byte_order( void )
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{
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int i = 1;
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char *cptr = (char *) &i;
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return (*cptr==1) ? LSBFirst : MSBFirst;
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}
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/**
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* Return the true number of bits per pixel for XImages.
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* For example, if we request a 24-bit deep visual we may actually need/get
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* 32bpp XImages. This function returns the appropriate bpp.
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* Input: dpy - the X display
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* visinfo - desribes the visual to be used for XImages
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* Return: true number of bits per pixel for XImages
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*/
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static int
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bits_per_pixel( XMesaVisual xmv )
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{
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Display *dpy = xmv->display;
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XVisualInfo * visinfo = xmv->visinfo;
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XImage *img;
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int bitsPerPixel;
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/* Create a temporary XImage */
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img = XCreateImage( dpy, visinfo->visual, visinfo->depth,
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ZPixmap, 0, /*format, offset*/
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malloc(8), /*data*/
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1, 1, /*width, height*/
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32, /*bitmap_pad*/
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0 /*bytes_per_line*/
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);
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assert(img);
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/* grab the bits/pixel value */
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bitsPerPixel = img->bits_per_pixel;
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/* free the XImage */
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free( img->data );
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img->data = NULL;
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XDestroyImage( img );
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return bitsPerPixel;
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}
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/*
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* Determine if a given X window ID is valid (window exists).
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* Do this by calling XGetWindowAttributes() for the window and
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* checking if we catch an X error.
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* Input: dpy - the display
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* win - the window to check for existence
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* Return: GL_TRUE - window exists
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* GL_FALSE - window doesn't exist
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*/
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static GLboolean WindowExistsFlag;
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static int window_exists_err_handler( Display* dpy, XErrorEvent* xerr )
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{
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(void) dpy;
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if (xerr->error_code == BadWindow) {
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WindowExistsFlag = GL_FALSE;
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}
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return 0;
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}
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static GLboolean window_exists( Display *dpy, Window win )
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{
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XWindowAttributes wa;
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int (*old_handler)( Display*, XErrorEvent* );
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WindowExistsFlag = GL_TRUE;
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old_handler = XSetErrorHandler(window_exists_err_handler);
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XGetWindowAttributes( dpy, win, &wa ); /* dummy request */
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XSetErrorHandler(old_handler);
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return WindowExistsFlag;
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}
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static Status
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get_drawable_size( Display *dpy, Drawable d, uint *width, uint *height )
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{
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Window root;
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Status stat;
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int xpos, ypos;
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unsigned int w, h, bw, depth;
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stat = XGetGeometry(dpy, d, &root, &xpos, &ypos, &w, &h, &bw, &depth);
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*width = w;
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*height = h;
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return stat;
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}
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/**
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* Return the size of the window (or pixmap) that corresponds to the
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* given XMesaBuffer.
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* \param width returns width in pixels
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* \param height returns height in pixels
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*/
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void
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xmesa_get_window_size(Display *dpy, XMesaBuffer b,
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GLuint *width, GLuint *height)
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{
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XMesaDisplay xmdpy = xmesa_init_display(dpy);
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Status stat;
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mtx_lock(&xmdpy->mutex);
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stat = get_drawable_size(dpy, b->ws.drawable, width, height);
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mtx_unlock(&xmdpy->mutex);
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if (!stat) {
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/* probably querying a window that's recently been destroyed */
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_mesa_warning(NULL, "XGetGeometry failed!\n");
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*width = *height = 1;
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}
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}
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#define GET_REDMASK(__v) __v->mesa_visual.redMask
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#define GET_GREENMASK(__v) __v->mesa_visual.greenMask
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#define GET_BLUEMASK(__v) __v->mesa_visual.blueMask
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/**
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* Choose the pixel format for the given visual.
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* This will tell the gallium driver how to pack pixel data into
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* drawing surfaces.
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*/
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static GLuint
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choose_pixel_format(XMesaVisual v)
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{
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bool native_byte_order = (host_byte_order() ==
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ImageByteOrder(v->display));
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if ( GET_REDMASK(v) == 0x0000ff
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&& GET_GREENMASK(v) == 0x00ff00
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&& GET_BLUEMASK(v) == 0xff0000
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&& v->BitsPerPixel == 32) {
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if (native_byte_order) {
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/* no byteswapping needed */
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return PIPE_FORMAT_RGBA8888_UNORM;
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}
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else {
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return PIPE_FORMAT_ABGR8888_UNORM;
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}
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}
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else if ( GET_REDMASK(v) == 0xff0000
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&& GET_GREENMASK(v) == 0x00ff00
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&& GET_BLUEMASK(v) == 0x0000ff
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&& v->BitsPerPixel == 32) {
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if (native_byte_order) {
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/* no byteswapping needed */
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return PIPE_FORMAT_BGRA8888_UNORM;
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}
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else {
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return PIPE_FORMAT_ARGB8888_UNORM;
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}
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}
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else if ( GET_REDMASK(v) == 0x0000ff00
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&& GET_GREENMASK(v) == 0x00ff0000
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&& GET_BLUEMASK(v) == 0xff000000
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&& v->BitsPerPixel == 32) {
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if (native_byte_order) {
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/* no byteswapping needed */
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return PIPE_FORMAT_ARGB8888_UNORM;
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}
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else {
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return PIPE_FORMAT_BGRA8888_UNORM;
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}
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}
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else if ( GET_REDMASK(v) == 0xf800
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&& GET_GREENMASK(v) == 0x07e0
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&& GET_BLUEMASK(v) == 0x001f
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&& native_byte_order
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&& v->BitsPerPixel == 16) {
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/* 5-6-5 RGB */
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return PIPE_FORMAT_B5G6R5_UNORM;
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}
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return PIPE_FORMAT_NONE;
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}
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/**
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* Choose a depth/stencil format that satisfies the given depth and
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* stencil sizes.
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*/
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static enum pipe_format
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choose_depth_stencil_format(XMesaDisplay xmdpy, int depth, int stencil,
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int sample_count)
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{
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const enum pipe_texture_target target = PIPE_TEXTURE_2D;
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const unsigned tex_usage = PIPE_BIND_DEPTH_STENCIL;
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enum pipe_format formats[8], fmt;
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int count, i;
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count = 0;
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if (depth <= 16 && stencil == 0) {
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formats[count++] = PIPE_FORMAT_Z16_UNORM;
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}
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if (depth <= 24 && stencil == 0) {
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formats[count++] = PIPE_FORMAT_X8Z24_UNORM;
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formats[count++] = PIPE_FORMAT_Z24X8_UNORM;
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}
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if (depth <= 24 && stencil <= 8) {
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formats[count++] = PIPE_FORMAT_S8_UINT_Z24_UNORM;
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formats[count++] = PIPE_FORMAT_Z24_UNORM_S8_UINT;
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}
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if (depth <= 32 && stencil == 0) {
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formats[count++] = PIPE_FORMAT_Z32_UNORM;
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}
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fmt = PIPE_FORMAT_NONE;
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for (i = 0; i < count; i++) {
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if (xmdpy->screen->is_format_supported(xmdpy->screen, formats[i],
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target, sample_count,
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sample_count, tex_usage)) {
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fmt = formats[i];
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break;
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}
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}
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return fmt;
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}
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|
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/**********************************************************************/
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/***** Linked list of XMesaBuffers *****/
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/**********************************************************************/
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static XMesaBuffer XMesaBufferList = NULL;
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|
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/**
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* Allocate a new XMesaBuffer object which corresponds to the given drawable.
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* Note that XMesaBuffer is derived from struct gl_framebuffer.
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* The new XMesaBuffer will not have any size (Width=Height=0).
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*
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* \param d the corresponding X drawable (window or pixmap)
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* \param type either WINDOW, PIXMAP or PBUFFER, describing d
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* \param vis the buffer's visual
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* \param cmap the window's colormap, if known.
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* \return new XMesaBuffer or NULL if any problem
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*/
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static XMesaBuffer
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create_xmesa_buffer(Drawable d, BufferType type,
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XMesaVisual vis, Colormap cmap)
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{
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XMesaDisplay xmdpy = xmesa_init_display(vis->display);
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XMesaBuffer b;
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assert(type == WINDOW || type == PIXMAP || type == PBUFFER);
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if (!xmdpy)
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return NULL;
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b = (XMesaBuffer) CALLOC_STRUCT(xmesa_buffer);
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if (!b)
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return NULL;
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|
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b->ws.drawable = d;
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b->ws.visual = vis->visinfo->visual;
|
|
b->ws.depth = vis->visinfo->depth;
|
|
|
|
b->xm_visual = vis;
|
|
b->type = type;
|
|
b->cmap = cmap;
|
|
|
|
get_drawable_size(vis->display, d, &b->width, &b->height);
|
|
|
|
/*
|
|
* Create framebuffer, but we'll plug in our own renderbuffers below.
|
|
*/
|
|
b->drawable = xmesa_create_st_framebuffer(xmdpy, b);
|
|
|
|
/* GLX_EXT_texture_from_pixmap */
|
|
b->TextureTarget = 0;
|
|
b->TextureFormat = GLX_TEXTURE_FORMAT_NONE_EXT;
|
|
b->TextureMipmap = 0;
|
|
|
|
/* insert buffer into linked list */
|
|
b->Next = XMesaBufferList;
|
|
XMesaBufferList = b;
|
|
|
|
return b;
|
|
}
|
|
|
|
|
|
/**
|
|
* Find an XMesaBuffer by matching X display and colormap but NOT matching
|
|
* the notThis buffer.
|
|
*/
|
|
XMesaBuffer
|
|
xmesa_find_buffer(Display *dpy, Colormap cmap, XMesaBuffer notThis)
|
|
{
|
|
XMesaBuffer b;
|
|
for (b = XMesaBufferList; b; b = b->Next) {
|
|
if (b->xm_visual->display == dpy &&
|
|
b->cmap == cmap &&
|
|
b != notThis) {
|
|
return b;
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
|
|
/**
|
|
* Remove buffer from linked list, delete if no longer referenced.
|
|
*/
|
|
static void
|
|
xmesa_free_buffer(XMesaBuffer buffer)
|
|
{
|
|
XMesaBuffer prev = NULL, b;
|
|
|
|
for (b = XMesaBufferList; b; b = b->Next) {
|
|
if (b == buffer) {
|
|
/* unlink buffer from list */
|
|
if (prev)
|
|
prev->Next = buffer->Next;
|
|
else
|
|
XMesaBufferList = buffer->Next;
|
|
|
|
/* Since the X window for the XMesaBuffer is going away, we don't
|
|
* want to dereference this pointer in the future.
|
|
*/
|
|
b->ws.drawable = 0;
|
|
|
|
/* Notify the st manager that the associated framebuffer interface
|
|
* object is no longer valid.
|
|
*/
|
|
st_api_destroy_drawable(buffer->drawable);
|
|
|
|
/* XXX we should move the buffer to a delete-pending list and destroy
|
|
* the buffer until it is no longer current.
|
|
*/
|
|
xmesa_destroy_st_framebuffer(buffer->drawable);
|
|
|
|
free(buffer);
|
|
|
|
return;
|
|
}
|
|
/* continue search */
|
|
prev = b;
|
|
}
|
|
/* buffer not found in XMesaBufferList */
|
|
_mesa_problem(NULL,"xmesa_free_buffer() - buffer not found\n");
|
|
}
|
|
|
|
|
|
|
|
/**********************************************************************/
|
|
/***** Misc Private Functions *****/
|
|
/**********************************************************************/
|
|
|
|
|
|
/**
|
|
* When a context is bound for the first time, we can finally finish
|
|
* initializing the context's visual and buffer information.
|
|
* \param v the XMesaVisual to initialize
|
|
* \param b the XMesaBuffer to initialize (may be NULL)
|
|
* \param window the window/pixmap we're rendering into
|
|
* \param cmap the colormap associated with the window/pixmap
|
|
* \return GL_TRUE=success, GL_FALSE=failure
|
|
*/
|
|
static GLboolean
|
|
initialize_visual_and_buffer(XMesaVisual v, XMesaBuffer b,
|
|
Drawable window, Colormap cmap)
|
|
{
|
|
assert(!b || b->xm_visual == v);
|
|
|
|
/* Save true bits/pixel */
|
|
v->BitsPerPixel = bits_per_pixel(v);
|
|
assert(v->BitsPerPixel > 0);
|
|
|
|
/* RGB WINDOW:
|
|
* We support RGB rendering into almost any kind of visual.
|
|
*/
|
|
const int xclass = v->visualType;
|
|
if (xclass != GLX_TRUE_COLOR && xclass != GLX_DIRECT_COLOR) {
|
|
_mesa_warning(NULL,
|
|
"XMesa: RGB mode rendering not supported in given visual.\n");
|
|
return GL_FALSE;
|
|
}
|
|
|
|
if (v->BitsPerPixel == 32) {
|
|
/* We use XImages for all front/back buffers. If an X Window or
|
|
* X Pixmap is 32bpp, there's no guarantee that the alpha channel
|
|
* will be preserved. For XImages we're in luck.
|
|
*/
|
|
v->mesa_visual.alphaBits = 8;
|
|
}
|
|
|
|
/*
|
|
* If MESA_INFO env var is set print out some debugging info
|
|
* which can help Brian figure out what's going on when a user
|
|
* reports bugs.
|
|
*/
|
|
if (os_get_option("MESA_INFO")) {
|
|
printf("X/Mesa visual = %p\n", (void *) v);
|
|
printf("X/Mesa depth = %d\n", v->visinfo->depth);
|
|
printf("X/Mesa bits per pixel = %d\n", v->BitsPerPixel);
|
|
}
|
|
|
|
return GL_TRUE;
|
|
}
|
|
|
|
|
|
|
|
#define NUM_VISUAL_TYPES 6
|
|
|
|
/**
|
|
* Convert an X visual type to a GLX visual type.
|
|
*
|
|
* \param visualType X visual type (i.e., \c TrueColor, \c StaticGray, etc.)
|
|
* to be converted.
|
|
* \return If \c visualType is a valid X visual type, a GLX visual type will
|
|
* be returned. Otherwise \c GLX_NONE will be returned.
|
|
*
|
|
* \note
|
|
* This code was lifted directly from lib/GL/glx/glcontextmodes.c in the
|
|
* DRI CVS tree.
|
|
*/
|
|
static GLint
|
|
xmesa_convert_from_x_visual_type( int visualType )
|
|
{
|
|
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;
|
|
}
|
|
|
|
|
|
/**********************************************************************/
|
|
/***** Public Functions *****/
|
|
/**********************************************************************/
|
|
|
|
|
|
/*
|
|
* Create a new X/Mesa visual.
|
|
* Input: display - X11 display
|
|
* visinfo - an XVisualInfo pointer
|
|
* rgb_flag - GL_TRUE = RGB mode,
|
|
* GL_FALSE = color index mode
|
|
* alpha_flag - alpha buffer requested?
|
|
* db_flag - GL_TRUE = double-buffered,
|
|
* GL_FALSE = single buffered
|
|
* stereo_flag - stereo visual?
|
|
* ximage_flag - GL_TRUE = use an XImage for back buffer,
|
|
* GL_FALSE = use an off-screen pixmap for back buffer
|
|
* depth_size - requested bits/depth values, or zero
|
|
* stencil_size - requested bits/stencil values, or zero
|
|
* accum_red_size - requested bits/red accum values, or zero
|
|
* accum_green_size - requested bits/green accum values, or zero
|
|
* accum_blue_size - requested bits/blue accum values, or zero
|
|
* accum_alpha_size - requested bits/alpha accum values, or zero
|
|
* num_samples - number of samples/pixel if multisampling, or zero
|
|
* level - visual level, usually 0
|
|
* visualCaveat - ala the GLX extension, usually GLX_NONE
|
|
* Return; a new XMesaVisual or 0 if error.
|
|
*/
|
|
PUBLIC
|
|
XMesaVisual XMesaCreateVisual( Display *display,
|
|
XVisualInfo * visinfo,
|
|
GLboolean rgb_flag,
|
|
GLboolean alpha_flag,
|
|
GLboolean db_flag,
|
|
GLboolean stereo_flag,
|
|
GLboolean ximage_flag,
|
|
GLint depth_size,
|
|
GLint stencil_size,
|
|
GLint accum_red_size,
|
|
GLint accum_green_size,
|
|
GLint accum_blue_size,
|
|
GLint accum_alpha_size,
|
|
GLint num_samples,
|
|
GLint level,
|
|
GLint visualCaveat )
|
|
{
|
|
XMesaDisplay xmdpy = xmesa_init_display(display);
|
|
XMesaVisual v;
|
|
GLint red_bits, green_bits, blue_bits, alpha_bits;
|
|
|
|
if (!xmdpy)
|
|
return NULL;
|
|
|
|
if (!rgb_flag)
|
|
return NULL;
|
|
|
|
/* For debugging only */
|
|
if (os_get_option("MESA_XSYNC")) {
|
|
/* This makes debugging X easier.
|
|
* In your debugger, set a breakpoint on _XError to stop when an
|
|
* X protocol error is generated.
|
|
*/
|
|
XSynchronize( display, 1 );
|
|
}
|
|
|
|
v = (XMesaVisual) CALLOC_STRUCT(xmesa_visual);
|
|
if (!v) {
|
|
return NULL;
|
|
}
|
|
|
|
v->display = display;
|
|
|
|
/* Save a copy of the XVisualInfo struct because the user may Xfree()
|
|
* the struct but we may need some of the information contained in it
|
|
* at a later time.
|
|
*/
|
|
v->visinfo = malloc(sizeof(*visinfo));
|
|
if (!v->visinfo) {
|
|
free(v);
|
|
return NULL;
|
|
}
|
|
memcpy(v->visinfo, visinfo, sizeof(*visinfo));
|
|
|
|
v->ximage_flag = ximage_flag;
|
|
|
|
v->mesa_visual.redMask = visinfo->red_mask;
|
|
v->mesa_visual.greenMask = visinfo->green_mask;
|
|
v->mesa_visual.blueMask = visinfo->blue_mask;
|
|
v->visualID = visinfo->visualid;
|
|
v->screen = visinfo->screen;
|
|
|
|
#if !(defined(__cplusplus) || defined(c_plusplus))
|
|
v->visualType = xmesa_convert_from_x_visual_type(visinfo->class);
|
|
#else
|
|
v->visualType = xmesa_convert_from_x_visual_type(visinfo->c_class);
|
|
#endif
|
|
|
|
if (alpha_flag)
|
|
v->mesa_visual.alphaBits = 8;
|
|
|
|
(void) initialize_visual_and_buffer( v, NULL, 0, 0 );
|
|
|
|
{
|
|
const int xclass = v->visualType;
|
|
if (xclass == GLX_TRUE_COLOR || xclass == GLX_DIRECT_COLOR) {
|
|
red_bits = util_bitcount(GET_REDMASK(v));
|
|
green_bits = util_bitcount(GET_GREENMASK(v));
|
|
blue_bits = util_bitcount(GET_BLUEMASK(v));
|
|
}
|
|
else {
|
|
/* this is an approximation */
|
|
int depth;
|
|
depth = v->visinfo->depth;
|
|
red_bits = depth / 3;
|
|
depth -= red_bits;
|
|
green_bits = depth / 2;
|
|
depth -= green_bits;
|
|
blue_bits = depth;
|
|
alpha_bits = 0;
|
|
assert( red_bits + green_bits + blue_bits == v->visinfo->depth );
|
|
}
|
|
alpha_bits = v->mesa_visual.alphaBits;
|
|
}
|
|
|
|
/* initialize visual */
|
|
{
|
|
struct gl_config *vis = &v->mesa_visual;
|
|
|
|
vis->doubleBufferMode = db_flag;
|
|
vis->stereoMode = stereo_flag;
|
|
|
|
vis->redBits = red_bits;
|
|
vis->greenBits = green_bits;
|
|
vis->blueBits = blue_bits;
|
|
vis->alphaBits = alpha_bits;
|
|
vis->rgbBits = red_bits + green_bits + blue_bits;
|
|
|
|
vis->depthBits = depth_size;
|
|
vis->stencilBits = stencil_size;
|
|
|
|
vis->accumRedBits = accum_red_size;
|
|
vis->accumGreenBits = accum_green_size;
|
|
vis->accumBlueBits = accum_blue_size;
|
|
vis->accumAlphaBits = accum_alpha_size;
|
|
|
|
vis->samples = num_samples;
|
|
}
|
|
|
|
v->stvis.buffer_mask = ST_ATTACHMENT_FRONT_LEFT_MASK;
|
|
if (db_flag)
|
|
v->stvis.buffer_mask |= ST_ATTACHMENT_BACK_LEFT_MASK;
|
|
if (stereo_flag) {
|
|
v->stvis.buffer_mask |= ST_ATTACHMENT_FRONT_RIGHT_MASK;
|
|
if (db_flag)
|
|
v->stvis.buffer_mask |= ST_ATTACHMENT_BACK_RIGHT_MASK;
|
|
}
|
|
|
|
v->stvis.color_format = choose_pixel_format(v);
|
|
|
|
/* Check format support at requested num_samples (for multisample) */
|
|
if (!xmdpy->screen->is_format_supported(xmdpy->screen,
|
|
v->stvis.color_format,
|
|
PIPE_TEXTURE_2D, num_samples,
|
|
num_samples,
|
|
PIPE_BIND_RENDER_TARGET))
|
|
v->stvis.color_format = PIPE_FORMAT_NONE;
|
|
|
|
if (v->stvis.color_format == PIPE_FORMAT_NONE) {
|
|
XMesaDestroyVisual(v);
|
|
return NULL;
|
|
}
|
|
|
|
v->stvis.depth_stencil_format =
|
|
choose_depth_stencil_format(xmdpy, depth_size, stencil_size,
|
|
num_samples);
|
|
|
|
v->stvis.accum_format = (accum_red_size +
|
|
accum_green_size + accum_blue_size + accum_alpha_size) ?
|
|
PIPE_FORMAT_R16G16B16A16_SNORM : PIPE_FORMAT_NONE;
|
|
|
|
v->stvis.samples = num_samples;
|
|
|
|
return v;
|
|
}
|
|
|
|
|
|
PUBLIC
|
|
void XMesaDestroyVisual( XMesaVisual v )
|
|
{
|
|
free(v->visinfo);
|
|
free(v);
|
|
}
|
|
|
|
|
|
/**
|
|
* Return the informative name.
|
|
*/
|
|
const char *
|
|
xmesa_get_name(void)
|
|
{
|
|
return "Mesa " PACKAGE_VERSION;
|
|
}
|
|
|
|
|
|
/**
|
|
* Do per-display initializations.
|
|
*/
|
|
int
|
|
xmesa_init( Display *display )
|
|
{
|
|
return xmesa_init_display(display) ? 0 : 1;
|
|
}
|
|
|
|
|
|
/**
|
|
* Create a new XMesaContext.
|
|
* \param v the XMesaVisual
|
|
* \param share_list another XMesaContext with which to share display
|
|
* lists or NULL if no sharing is wanted.
|
|
* \return an XMesaContext or NULL if error.
|
|
*/
|
|
PUBLIC
|
|
XMesaContext XMesaCreateContext( XMesaVisual v, XMesaContext share_list,
|
|
GLuint major, GLuint minor,
|
|
GLuint profileMask, GLuint contextFlags)
|
|
{
|
|
XMesaDisplay xmdpy = xmesa_init_display(v->display);
|
|
struct st_context_attribs attribs;
|
|
enum st_context_error ctx_err = 0;
|
|
XMesaContext c;
|
|
|
|
if (!xmdpy)
|
|
goto no_xmesa_context;
|
|
|
|
/* Note: the XMesaContext contains a Mesa struct gl_context struct (inheritance) */
|
|
c = (XMesaContext) CALLOC_STRUCT(xmesa_context);
|
|
if (!c)
|
|
goto no_xmesa_context;
|
|
|
|
c->xm_visual = v;
|
|
c->xm_buffer = NULL; /* set later by XMesaMakeCurrent */
|
|
c->xm_read_buffer = NULL;
|
|
|
|
memset(&attribs, 0, sizeof(attribs));
|
|
attribs.visual = v->stvis;
|
|
attribs.major = major;
|
|
attribs.minor = minor;
|
|
if (contextFlags & GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB)
|
|
attribs.flags |= ST_CONTEXT_FLAG_FORWARD_COMPATIBLE;
|
|
if (contextFlags & GLX_CONTEXT_DEBUG_BIT_ARB)
|
|
attribs.flags |= ST_CONTEXT_FLAG_DEBUG;
|
|
if (contextFlags & GLX_CONTEXT_ROBUST_ACCESS_BIT_ARB)
|
|
attribs.context_flags |= PIPE_CONTEXT_ROBUST_BUFFER_ACCESS;
|
|
|
|
switch (profileMask) {
|
|
case GLX_CONTEXT_CORE_PROFILE_BIT_ARB:
|
|
/* There are no profiles before OpenGL 3.2. The
|
|
* GLX_ARB_create_context_profile spec says:
|
|
*
|
|
* "If the requested OpenGL version is less than 3.2,
|
|
* GLX_CONTEXT_PROFILE_MASK_ARB is ignored and the functionality
|
|
* of the context is determined solely by the requested version."
|
|
*/
|
|
if (major > 3 || (major == 3 && minor >= 2)) {
|
|
attribs.profile = API_OPENGL_CORE;
|
|
break;
|
|
}
|
|
FALLTHROUGH;
|
|
case GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB:
|
|
/*
|
|
* The spec also says:
|
|
*
|
|
* "If version 3.1 is requested, the context returned may implement
|
|
* any of the following versions:
|
|
*
|
|
* * Version 3.1. The GL_ARB_compatibility extension may or may not
|
|
* be implemented, as determined by the implementation.
|
|
* * The core profile of version 3.2 or greater."
|
|
*
|
|
* and because Mesa doesn't support GL_ARB_compatibility, the only chance to
|
|
* honour a 3.1 context is through core profile.
|
|
*/
|
|
if (major == 3 && minor == 1) {
|
|
attribs.profile = API_OPENGL_CORE;
|
|
} else {
|
|
attribs.profile = API_OPENGL_COMPAT;
|
|
}
|
|
break;
|
|
case GLX_CONTEXT_ES_PROFILE_BIT_EXT:
|
|
if (major >= 2) {
|
|
attribs.profile = API_OPENGLES2;
|
|
} else {
|
|
attribs.profile = API_OPENGLES;
|
|
}
|
|
break;
|
|
default:
|
|
assert(0);
|
|
goto no_st;
|
|
}
|
|
|
|
c->st = st_api_create_context(xmdpy->fscreen, &attribs,
|
|
&ctx_err, (share_list) ? share_list->st : NULL);
|
|
if (c->st == NULL)
|
|
goto no_st;
|
|
|
|
c->st->frontend_context = (void *) c;
|
|
|
|
c->hud = hud_create(c->st->cso_context, NULL, c->st,
|
|
st_context_invalidate_state);
|
|
|
|
return c;
|
|
|
|
no_st:
|
|
free(c);
|
|
no_xmesa_context:
|
|
return NULL;
|
|
}
|
|
|
|
|
|
|
|
PUBLIC
|
|
void XMesaDestroyContext( XMesaContext c )
|
|
{
|
|
if (c->hud) {
|
|
hud_destroy(c->hud, NULL);
|
|
}
|
|
|
|
st_destroy_context(c->st);
|
|
|
|
/* FIXME: We should destroy the screen here, but if we do so, surfaces may
|
|
* outlive it, causing segfaults
|
|
struct pipe_screen *screen = c->st->pipe->screen;
|
|
screen->destroy(screen);
|
|
*/
|
|
|
|
free(c);
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Private function for creating an XMesaBuffer which corresponds to an
|
|
* X window or pixmap.
|
|
* \param v the window's XMesaVisual
|
|
* \param w the window we're wrapping
|
|
* \return new XMesaBuffer or NULL if error
|
|
*/
|
|
PUBLIC XMesaBuffer
|
|
XMesaCreateWindowBuffer(XMesaVisual v, Window w)
|
|
{
|
|
XWindowAttributes attr;
|
|
XMesaBuffer b;
|
|
Colormap cmap;
|
|
int depth;
|
|
|
|
assert(v);
|
|
assert(w);
|
|
|
|
/* Check that window depth matches visual depth */
|
|
XGetWindowAttributes( v->display, w, &attr );
|
|
depth = attr.depth;
|
|
if (v->visinfo->depth != depth) {
|
|
_mesa_warning(NULL, "XMesaCreateWindowBuffer: depth mismatch between visual (%d) and window (%d)!\n",
|
|
v->visinfo->depth, depth);
|
|
return NULL;
|
|
}
|
|
|
|
/* Find colormap */
|
|
if (attr.colormap) {
|
|
cmap = attr.colormap;
|
|
}
|
|
else {
|
|
_mesa_warning(NULL, "Window %u has no colormap!\n", (unsigned int) w);
|
|
/* this is weird, a window w/out a colormap!? */
|
|
/* OK, let's just allocate a new one and hope for the best */
|
|
cmap = XCreateColormap(v->display, w, attr.visual, AllocNone);
|
|
}
|
|
|
|
b = create_xmesa_buffer((Drawable) w, WINDOW, v, cmap);
|
|
if (!b)
|
|
return NULL;
|
|
|
|
if (!initialize_visual_and_buffer( v, b, (Drawable) w, cmap )) {
|
|
xmesa_free_buffer(b);
|
|
return NULL;
|
|
}
|
|
|
|
return b;
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Create a new XMesaBuffer from an X pixmap.
|
|
*
|
|
* \param v the XMesaVisual
|
|
* \param p the pixmap
|
|
* \param cmap the colormap, may be 0 if using a \c GLX_TRUE_COLOR or
|
|
* \c GLX_DIRECT_COLOR visual for the pixmap
|
|
* \returns new XMesaBuffer or NULL if error
|
|
*/
|
|
PUBLIC XMesaBuffer
|
|
XMesaCreatePixmapBuffer(XMesaVisual v, Pixmap p, Colormap cmap)
|
|
{
|
|
XMesaBuffer b;
|
|
|
|
assert(v);
|
|
|
|
b = create_xmesa_buffer((Drawable) p, PIXMAP, v, cmap);
|
|
if (!b)
|
|
return NULL;
|
|
|
|
if (!initialize_visual_and_buffer(v, b, (Drawable) p, cmap)) {
|
|
xmesa_free_buffer(b);
|
|
return NULL;
|
|
}
|
|
|
|
return b;
|
|
}
|
|
|
|
|
|
/**
|
|
* For GLX_EXT_texture_from_pixmap
|
|
*/
|
|
XMesaBuffer
|
|
XMesaCreatePixmapTextureBuffer(XMesaVisual v, Pixmap p,
|
|
Colormap cmap,
|
|
int format, int target, int mipmap)
|
|
{
|
|
GET_CURRENT_CONTEXT(ctx);
|
|
XMesaBuffer b;
|
|
|
|
assert(v);
|
|
|
|
b = create_xmesa_buffer((Drawable) p, PIXMAP, v, cmap);
|
|
if (!b)
|
|
return NULL;
|
|
|
|
/* get pixmap size */
|
|
xmesa_get_window_size(v->display, b, &b->width, &b->height);
|
|
|
|
if (target == 0) {
|
|
/* examine dims */
|
|
if (ctx->Extensions.ARB_texture_non_power_of_two) {
|
|
target = GLX_TEXTURE_2D_EXT;
|
|
}
|
|
else if ( util_bitcount(b->width) == 1
|
|
&& util_bitcount(b->height) == 1) {
|
|
/* power of two size */
|
|
if (b->height == 1) {
|
|
target = GLX_TEXTURE_1D_EXT;
|
|
}
|
|
else {
|
|
target = GLX_TEXTURE_2D_EXT;
|
|
}
|
|
}
|
|
else if (ctx->Extensions.NV_texture_rectangle) {
|
|
target = GLX_TEXTURE_RECTANGLE_EXT;
|
|
}
|
|
else {
|
|
/* non power of two textures not supported */
|
|
XMesaDestroyBuffer(b);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
b->TextureTarget = target;
|
|
b->TextureFormat = format;
|
|
b->TextureMipmap = mipmap;
|
|
|
|
if (!initialize_visual_and_buffer(v, b, (Drawable) p, cmap)) {
|
|
xmesa_free_buffer(b);
|
|
return NULL;
|
|
}
|
|
|
|
return b;
|
|
}
|
|
|
|
|
|
|
|
XMesaBuffer
|
|
XMesaCreatePBuffer(XMesaVisual v, Colormap cmap,
|
|
unsigned int width, unsigned int height)
|
|
{
|
|
Window root;
|
|
Drawable drawable; /* X Pixmap Drawable */
|
|
XMesaBuffer b;
|
|
|
|
/* allocate pixmap for front buffer */
|
|
root = RootWindow( v->display, v->visinfo->screen );
|
|
drawable = XCreatePixmap(v->display, root, width, height,
|
|
v->visinfo->depth);
|
|
if (!drawable)
|
|
return NULL;
|
|
|
|
b = create_xmesa_buffer(drawable, PBUFFER, v, cmap);
|
|
if (!b)
|
|
return NULL;
|
|
|
|
if (!initialize_visual_and_buffer(v, b, drawable, cmap)) {
|
|
xmesa_free_buffer(b);
|
|
return NULL;
|
|
}
|
|
|
|
return b;
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* Deallocate an XMesaBuffer structure and all related info.
|
|
*/
|
|
PUBLIC void
|
|
XMesaDestroyBuffer(XMesaBuffer b)
|
|
{
|
|
xmesa_free_buffer(b);
|
|
}
|
|
|
|
|
|
/**
|
|
* Notify the binding context to validate the buffer.
|
|
*/
|
|
void
|
|
xmesa_notify_invalid_buffer(XMesaBuffer b)
|
|
{
|
|
p_atomic_inc(&b->drawable->stamp);
|
|
}
|
|
|
|
|
|
/**
|
|
* Query the current drawable size and notify the binding context.
|
|
*/
|
|
void
|
|
xmesa_check_buffer_size(XMesaBuffer b)
|
|
{
|
|
GLuint old_width, old_height;
|
|
|
|
if (!b)
|
|
return;
|
|
|
|
if (b->type == PBUFFER)
|
|
return;
|
|
|
|
old_width = b->width;
|
|
old_height = b->height;
|
|
|
|
xmesa_get_window_size(b->xm_visual->display, b, &b->width, &b->height);
|
|
|
|
if (b->width != old_width || b->height != old_height)
|
|
xmesa_notify_invalid_buffer(b);
|
|
}
|
|
|
|
|
|
/*
|
|
* Bind buffer b to context c and make c the current rendering context.
|
|
*/
|
|
PUBLIC
|
|
GLboolean XMesaMakeCurrent2( XMesaContext c, XMesaBuffer drawBuffer,
|
|
XMesaBuffer readBuffer )
|
|
{
|
|
XMesaContext old_ctx = XMesaGetCurrentContext();
|
|
|
|
if (old_ctx && old_ctx != c) {
|
|
XMesaFlush(old_ctx);
|
|
old_ctx->xm_buffer = NULL;
|
|
old_ctx->xm_read_buffer = NULL;
|
|
}
|
|
|
|
if (c) {
|
|
if (!drawBuffer != !readBuffer) {
|
|
return GL_FALSE; /* must specify zero or two buffers! */
|
|
}
|
|
|
|
if (c == old_ctx &&
|
|
c->xm_buffer == drawBuffer &&
|
|
c->xm_read_buffer == readBuffer)
|
|
return GL_TRUE;
|
|
|
|
xmesa_check_buffer_size(drawBuffer);
|
|
if (readBuffer != drawBuffer)
|
|
xmesa_check_buffer_size(readBuffer);
|
|
|
|
c->xm_buffer = drawBuffer;
|
|
c->xm_read_buffer = readBuffer;
|
|
|
|
st_api_make_current(c->st,
|
|
drawBuffer ? drawBuffer->drawable : NULL,
|
|
readBuffer ? readBuffer->drawable : NULL);
|
|
|
|
/* Solution to Stephane Rehel's problem with glXReleaseBuffersMESA(): */
|
|
if (drawBuffer)
|
|
drawBuffer->wasCurrent = GL_TRUE;
|
|
}
|
|
else {
|
|
/* Detach */
|
|
st_api_make_current(NULL, NULL, NULL);
|
|
|
|
}
|
|
return GL_TRUE;
|
|
}
|
|
|
|
|
|
/*
|
|
* Unbind the context c from its buffer.
|
|
*/
|
|
GLboolean XMesaUnbindContext( XMesaContext c )
|
|
{
|
|
/* A no-op for XFree86 integration purposes */
|
|
return GL_TRUE;
|
|
}
|
|
|
|
|
|
XMesaContext XMesaGetCurrentContext( void )
|
|
{
|
|
struct st_context *st = st_api_get_current();
|
|
return (XMesaContext) (st) ? st->frontend_context : NULL;
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Swap front and back color buffers and have winsys display front buffer.
|
|
* If there's no front color buffer no swap actually occurs.
|
|
*/
|
|
PUBLIC
|
|
void XMesaSwapBuffers( XMesaBuffer b )
|
|
{
|
|
XMesaContext xmctx = XMesaGetCurrentContext();
|
|
|
|
/* Need to draw HUD before flushing */
|
|
if (xmctx && xmctx->hud) {
|
|
struct pipe_resource *back =
|
|
xmesa_get_framebuffer_resource(b->drawable, ST_ATTACHMENT_BACK_LEFT);
|
|
hud_run(xmctx->hud, NULL, back);
|
|
}
|
|
|
|
if (xmctx && xmctx->xm_buffer == b) {
|
|
struct pipe_fence_handle *fence = NULL;
|
|
st_context_flush(xmctx->st, ST_FLUSH_FRONT, &fence, NULL, NULL);
|
|
/* Wait until all rendering is complete */
|
|
if (fence) {
|
|
XMesaDisplay xmdpy = xmesa_init_display(b->xm_visual->display);
|
|
struct pipe_screen *screen = xmdpy->screen;
|
|
xmdpy->screen->fence_finish(screen, NULL, fence,
|
|
OS_TIMEOUT_INFINITE);
|
|
xmdpy->screen->fence_reference(screen, &fence, NULL);
|
|
}
|
|
}
|
|
|
|
xmesa_swap_st_framebuffer(b->drawable);
|
|
|
|
/* TODO: remove this if the framebuffer state doesn't change. */
|
|
st_context_invalidate_state(xmctx->st, ST_INVALIDATE_FB_STATE);
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* Copy sub-region of back buffer to front buffer
|
|
*/
|
|
void XMesaCopySubBuffer( XMesaBuffer b, int x, int y, int width, int height )
|
|
{
|
|
XMesaContext xmctx = XMesaGetCurrentContext();
|
|
|
|
st_context_flush(xmctx->st, ST_FLUSH_FRONT, NULL, NULL, NULL);
|
|
|
|
xmesa_copy_st_framebuffer(b->drawable,
|
|
ST_ATTACHMENT_BACK_LEFT, ST_ATTACHMENT_FRONT_LEFT,
|
|
x, b->height - y - height, width, height);
|
|
}
|
|
|
|
|
|
|
|
void XMesaFlush( XMesaContext c )
|
|
{
|
|
if (c && c->xm_visual->display) {
|
|
XMesaDisplay xmdpy = xmesa_init_display(c->xm_visual->display);
|
|
struct pipe_fence_handle *fence = NULL;
|
|
|
|
st_context_flush(c->st, ST_FLUSH_FRONT, &fence, NULL, NULL);
|
|
if (fence) {
|
|
xmdpy->screen->fence_finish(xmdpy->screen, NULL, fence,
|
|
OS_TIMEOUT_INFINITE);
|
|
xmdpy->screen->fence_reference(xmdpy->screen, &fence, NULL);
|
|
}
|
|
XFlush( c->xm_visual->display );
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
XMesaBuffer XMesaFindBuffer( Display *dpy, Drawable d )
|
|
{
|
|
XMesaBuffer b;
|
|
for (b = XMesaBufferList; b; b = b->Next) {
|
|
if (b->ws.drawable == d && b->xm_visual->display == dpy) {
|
|
return b;
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
|
|
/**
|
|
* Free/destroy all XMesaBuffers associated with given display.
|
|
*/
|
|
void xmesa_destroy_buffers_on_display(Display *dpy)
|
|
{
|
|
XMesaBuffer b, next;
|
|
for (b = XMesaBufferList; b; b = next) {
|
|
next = b->Next;
|
|
if (b->xm_visual->display == dpy) {
|
|
xmesa_free_buffer(b);
|
|
/* delete head of list? */
|
|
if (XMesaBufferList == b) {
|
|
XMesaBufferList = next;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* Look for XMesaBuffers whose X window has been destroyed.
|
|
* Deallocate any such XMesaBuffers.
|
|
*/
|
|
void XMesaGarbageCollect( void )
|
|
{
|
|
XMesaBuffer b, next;
|
|
for (b=XMesaBufferList; b; b=next) {
|
|
next = b->Next;
|
|
if (b->xm_visual &&
|
|
b->xm_visual->display &&
|
|
b->ws.drawable &&
|
|
b->type == WINDOW) {
|
|
XSync(b->xm_visual->display, False);
|
|
if (!window_exists( b->xm_visual->display, b->ws.drawable )) {
|
|
/* found a dead window, free the ancillary info */
|
|
XMesaDestroyBuffer( b );
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
static enum st_attachment_type xmesa_attachment_type(int glx_attachment)
|
|
{
|
|
switch(glx_attachment) {
|
|
case GLX_FRONT_LEFT_EXT:
|
|
return ST_ATTACHMENT_FRONT_LEFT;
|
|
case GLX_FRONT_RIGHT_EXT:
|
|
return ST_ATTACHMENT_FRONT_RIGHT;
|
|
case GLX_BACK_LEFT_EXT:
|
|
return ST_ATTACHMENT_BACK_LEFT;
|
|
case GLX_BACK_RIGHT_EXT:
|
|
return ST_ATTACHMENT_BACK_RIGHT;
|
|
default:
|
|
assert(0);
|
|
return ST_ATTACHMENT_FRONT_LEFT;
|
|
}
|
|
}
|
|
|
|
|
|
PUBLIC void
|
|
XMesaBindTexImage(Display *dpy, XMesaBuffer drawable, int buffer,
|
|
const int *attrib_list)
|
|
{
|
|
struct st_context *st = st_api_get_current();
|
|
struct pipe_frontend_drawable* pdrawable = drawable->drawable;
|
|
struct pipe_resource *res;
|
|
int x, y, w, h;
|
|
enum st_attachment_type st_attachment = xmesa_attachment_type(buffer);
|
|
|
|
x = 0;
|
|
y = 0;
|
|
w = drawable->width;
|
|
h = drawable->height;
|
|
|
|
/* We need to validate our attachments before using them,
|
|
* in case the texture doesn't exist yet. */
|
|
xmesa_st_framebuffer_validate_textures(pdrawable, w, h, 1 << st_attachment);
|
|
res = xmesa_get_attachment(pdrawable, st_attachment);
|
|
|
|
if (res) {
|
|
struct pipe_context* pipe = xmesa_get_context(pdrawable);
|
|
enum pipe_format internal_format = res->format;
|
|
struct pipe_transfer *tex_xfer;
|
|
char *map;
|
|
int line, byte_width;
|
|
XImage *img;
|
|
|
|
internal_format = choose_pixel_format(drawable->xm_visual);
|
|
|
|
map = pipe_texture_map(pipe, res,
|
|
0, 0, /* level, layer */
|
|
PIPE_MAP_WRITE,
|
|
x, y,
|
|
w, h, &tex_xfer);
|
|
if (!map)
|
|
return;
|
|
|
|
/* Grab the XImage that we want to turn into a texture. */
|
|
img = XGetImage(dpy,
|
|
drawable->ws.drawable,
|
|
x, y,
|
|
w, h,
|
|
AllPlanes,
|
|
ZPixmap);
|
|
|
|
if (!img) {
|
|
pipe_texture_unmap(pipe, tex_xfer);
|
|
return;
|
|
}
|
|
|
|
/* The pipe transfer has a pitch rounded up to the nearest 64 pixels. */
|
|
byte_width = w * ((img->bits_per_pixel + 7) / 8);
|
|
|
|
for (line = 0; line < h; line++)
|
|
memcpy(&map[line * tex_xfer->stride],
|
|
&img->data[line * img->bytes_per_line],
|
|
byte_width);
|
|
|
|
pipe_texture_unmap(pipe, tex_xfer);
|
|
|
|
st_context_teximage(st, GL_TEXTURE_2D, 0 /* level */, internal_format,
|
|
res, false /* no mipmap */);
|
|
|
|
}
|
|
}
|
|
|
|
|
|
|
|
PUBLIC void
|
|
XMesaReleaseTexImage(Display *dpy, XMesaBuffer drawable, int buffer)
|
|
{
|
|
}
|
|
|
|
|
|
void
|
|
XMesaCopyContext(XMesaContext src, XMesaContext dst, unsigned long mask)
|
|
{
|
|
_mesa_copy_context(src->st->ctx, dst->st->ctx, mask);
|
|
}
|