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Big re-org of buffer size management.

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All buffer resizes now handled by xmesa_check_and_update_buffer_size() which
uses the _mesa_resize_framebuffer() function.
Moved all low-level XImage/Pixmap resizing into xm_buffers.c file.
Also, update lots of comments for Doxygen.
This commit is contained in:
Brian Paul
2006-10-14 22:52:17 +00:00
parent 2b46f4b853
commit d21fa9cd79
4 changed files with 529 additions and 494 deletions
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502
src/mesa/drivers/x11/xm_api.c
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@@ -22,8 +22,10 @@
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* This file contains the implementations of all the XMesa* functions.
/**
* \file xm_api.c
*
* All the XMesa* API functions.
*
*
* NOTES:
@@ -68,13 +70,8 @@
#include "framebuffer.h"
#include "glthread.h"
#include "imports.h"
#include "matrix.h"
#include "mtypes.h"
#include "macros.h"
#include "renderbuffer.h"
#include "texformat.h"
#include "texobj.h"
#include "texstore.h"
#include "swrast/swrast.h"
#include "swrast_setup/swrast_setup.h"
#include "array_cache/acache.h"
@@ -87,14 +84,14 @@
#include <GL/glxtokens.h>
#endif
/*
/**
* Global X driver lock
*/
_glthread_Mutex _xmesa_lock;
/*
/**
* Lookup tables for HPCR pixel format:
*/
static short hpcr_rgbTbl[3][256] = {
@@ -161,7 +158,7 @@ static short hpcr_rgbTbl[3][256] = {
/**********************************************************************/
/*
/**
* Return the host's byte order as LSBFirst or MSBFirst ala X.
*/
#ifndef XFree86Server
@@ -174,23 +171,7 @@ static int host_byte_order( void )
#endif
/*
* Error handling.
*/
#ifndef XFree86Server
static volatile int mesaXErrorFlag = 0;
static int mesaHandleXError( XMesaDisplay *dpy, XErrorEvent *event )
{
(void) dpy;
(void) event;
mesaXErrorFlag = 1;
return 0;
}
#endif
/*
/**
* Check if the X Shared Memory extension is available.
* Return: 0 = not available
* 1 = shared XImage support available
@@ -222,11 +203,12 @@ static int check_for_xshm( XMesaDisplay *display )
}
/*
/**
* Apply gamma correction to an intensity value in [0..max]. Return the
* new intensity value.
*/
static GLint gamma_adjust( GLfloat gamma, GLint value, GLint max )
static GLint
gamma_adjust( GLfloat gamma, GLint value, GLint max )
{
if (gamma == 1.0) {
return value;
@@ -239,7 +221,7 @@ static GLint gamma_adjust( GLfloat gamma, GLint value, GLint max )
/*
/**
* Return the true number of bits per pixel for XImages.
* For example, if we request a 24-bit deep visual we may actually need/get
* 32bpp XImages. This function returns the appropriate bpp.
@@ -247,10 +229,10 @@ static GLint gamma_adjust( GLfloat gamma, GLint value, GLint max )
* visinfo - desribes the visual to be used for XImages
* Return: true number of bits per pixel for XImages
*/
#ifdef XFree86Server
static int bits_per_pixel( XMesaVisual xmv )
static int
bits_per_pixel( XMesaVisual xmv )
{
#ifdef XFree86Server
const int depth = xmv->nplanes;
int i;
assert(depth > 0);
@@ -259,12 +241,7 @@ static int bits_per_pixel( XMesaVisual xmv )
return screenInfo.formats[i].bitsPerPixel;
}
return depth; /* should never get here, but this should be safe */
}
#else
static int bits_per_pixel( XMesaVisual xmv )
{
XMesaDisplay *dpy = xmv->display;
XMesaVisualInfo visinfo = xmv->visinfo;
XMesaImage *img;
@@ -285,8 +262,8 @@ static int bits_per_pixel( XMesaVisual xmv )
img->data = NULL;
XMesaDestroyImage( img );
return bitsPerPixel;
}
#endif
}
@@ -325,6 +302,45 @@ static GLboolean window_exists( XMesaDisplay *dpy, Window win )
/**
* Return the size of the window (or pixmap) that corresponds to the
* given XMesaBuffer.
* \param width returns width in pixels
* \param height returns height in pixels
*/
void
xmesa_get_window_size(XMesaDisplay *dpy, XMesaBuffer b,
GLuint *width, GLuint *height)
{
#ifdef XFree86Server
*width = MIN2(b->frontxrb->drawable->width, MAX_WIDTH);
*height = MIN2(b->frontxrb->drawable->height, MAX_HEIGHT);
#else
Window root;
Status stat;
int xpos, ypos;
unsigned int w, h, bw, depth;
_glthread_LOCK_MUTEX(_xmesa_lock);
XSync(b->xm_visual->display, 0); /* added for Chromium */
stat = XGetGeometry(dpy, b->frontxrb->pixmap, &root, &xpos, &ypos,
&w, &h, &bw, &depth);
_glthread_UNLOCK_MUTEX(_xmesa_lock);
if (stat) {
*width = w;
*height = h;
}
else {
/* probably querying a window that's recently been destroyed */
_mesa_warning(NULL, "XGetGeometry failed!\n");
*width = *height = 1;
}
#endif
}
/**********************************************************************/
/***** Linked list of XMesaBuffers *****/
/**********************************************************************/
@@ -333,15 +349,28 @@ static XMesaBuffer XMesaBufferList = NULL;
/**
* Allocate a new XMesaBuffer, initialize basic fields and add to
* the list of all buffers.
* Allocate a new XMesaBuffer object which corresponds to the given drawable.
* Note that XMesaBuffer is derived from GLframebuffer.
* The new XMesaBuffer will not have any size (Width=Height=0).
*
* \param d the corresponding X drawable (window or pixmap)
* \param type either WINDOW, PIXMAP or PBUFFER, describing d
* \param vis the buffer's visual
* \param cmap the window's colormap, if known.
* \return new XMesaBuffer or NULL if any problem
*/
static XMesaBuffer
alloc_xmesa_buffer(XMesaVisual vis, BufferType type, XMesaColormap cmap)
create_xmesa_buffer(XMesaDrawable d, BufferType type,
XMesaVisual vis, XMesaColormap cmap)
{
XMesaBuffer b = (XMesaBuffer) CALLOC_STRUCT(xmesa_buffer);
if (b) {
GLboolean swAlpha;
XMesaBuffer b;
ASSERT(type == WINDOW || type == PIXMAP || type == PBUFFER);
b = (XMesaBuffer) CALLOC_STRUCT(xmesa_buffer);
if (!b)
return NULL;
b->display = vis->display;
b->xm_visual = vis;
@@ -350,20 +379,33 @@ alloc_xmesa_buffer(XMesaVisual vis, BufferType type, XMesaColormap cmap)
_mesa_initialize_framebuffer(&b->mesa_buffer, &vis->mesa_visual);
/* Allocate the framebuffer's renderbuffers */
assert(!b->mesa_buffer.Attachment[BUFFER_FRONT_LEFT].Renderbuffer);
assert(!b->mesa_buffer.Attachment[BUFFER_BACK_LEFT].Renderbuffer);
/* front renderbuffer */
/*
* Front renderbuffer
*/
b->frontxrb = xmesa_new_renderbuffer(NULL, 0, &vis->mesa_visual,
GL_FALSE);
if (!b->frontxrb) {
_mesa_free(b);
return NULL;
}
b->frontxrb->Parent = b;
b->frontxrb->drawable = d;
b->frontxrb->pixmap = (XMesaPixmap) d;
_mesa_add_renderbuffer(&b->mesa_buffer, BUFFER_FRONT_LEFT,
&b->frontxrb->Base);
/* back renderbuffer */
/*
* Back renderbuffer
*/
if (vis->mesa_visual.doubleBufferMode) {
b->backxrb = xmesa_new_renderbuffer(NULL, 0, &vis->mesa_visual,
GL_TRUE);
if (!b->backxrb) {
/* XXX free front xrb too */
_mesa_free(b);
return NULL;
}
b->backxrb->Parent = b;
/* determine back buffer implementation */
b->db_mode = vis->ximage_flag ? BACK_XIMAGE : BACK_PIXMAP;
@@ -371,7 +413,9 @@ alloc_xmesa_buffer(XMesaVisual vis, BufferType type, XMesaColormap cmap)
&b->backxrb->Base);
}
/* determine if we need software alpha planes */
/*
* Software alpha planes
*/
if (vis->mesa_visual.alphaBits > 0
&& vis->undithered_pf != PF_8A8B8G8R
&& vis->undithered_pf != PF_8A8R8G8B) {
@@ -384,6 +428,9 @@ alloc_xmesa_buffer(XMesaVisual vis, BufferType type, XMesaColormap cmap)
swAlpha = GL_FALSE;
}
/*
* Other renderbuffer (depth, stencil, etc)
*/
_mesa_add_soft_renderbuffers(&b->mesa_buffer,
GL_FALSE, /* color */
vis->mesa_visual.haveDepthBuffer,
@@ -392,21 +439,20 @@ alloc_xmesa_buffer(XMesaVisual vis, BufferType type, XMesaColormap cmap)
swAlpha,
vis->mesa_visual.numAuxBuffers > 0 );
/* insert into linked list */
/* 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.
*/
static XMesaBuffer find_xmesa_buffer(XMesaDisplay *dpy,
XMesaColormap cmap,
XMesaBuffer notThis)
static XMesaBuffer
find_xmesa_buffer(XMesaDisplay *dpy, XMesaColormap cmap, XMesaBuffer notThis)
{
XMesaBuffer b;
for (b=XMesaBufferList; b; b=b->Next) {
@@ -418,11 +464,12 @@ static XMesaBuffer find_xmesa_buffer(XMesaDisplay *dpy,
}
/*
/**
* Free an XMesaBuffer, remove from linked list, perhaps free X colormap
* entries.
*/
static void free_xmesa_buffer(int client, XMesaBuffer buffer)
static void
free_xmesa_buffer(int client, XMesaBuffer buffer)
{
XMesaBuffer prev = NULL, b;
(void) client;
@@ -461,8 +508,11 @@ static void free_xmesa_buffer(int client, XMesaBuffer buffer)
}
/* Copy X color table stuff from one XMesaBuffer to another. */
static void copy_colortable_info(XMesaBuffer dst, const XMesaBuffer src)
/**
* Copy X color table stuff from one XMesaBuffer to another.
*/
static void
copy_colortable_info(XMesaBuffer dst, const XMesaBuffer src)
{
MEMCPY(dst->color_table, src->color_table, sizeof(src->color_table));
MEMCPY(dst->pixel_to_r, src->pixel_to_r, sizeof(src->pixel_to_r));
@@ -481,198 +531,6 @@ static void copy_colortable_info(XMesaBuffer dst, const XMesaBuffer src)
/**
* Allocate a shared memory XImage back buffer for the given XMesaBuffer.
* Return: GL_TRUE if success, GL_FALSE if error
*/
#ifndef XFree86Server
static GLboolean
alloc_shm_back_buffer(XMesaBuffer b, GLuint width, GLuint height)
{
#ifdef USE_XSHM
/*
* We have to do a _lot_ of error checking here to be sure we can
* really use the XSHM extension. It seems different servers trigger
* errors at different points if the extension won't work. Therefore
* we have to be very careful...
*/
GC gc;
int (*old_handler)( XMesaDisplay *, XErrorEvent * );
if (width == 0 || height == 0) {
/* this will be true the first time we're called on 'b' */
return GL_FALSE;
}
b->backxrb->ximage = XShmCreateImage(b->xm_visual->display,
b->xm_visual->visinfo->visual,
b->xm_visual->visinfo->depth,
ZPixmap, NULL, &b->shminfo,
width, height);
if (b->backxrb->ximage == NULL) {
_mesa_warning(NULL, "alloc_back_buffer: Shared memory error (XShmCreateImage), disabling.\n");
b->shm = 0;
return GL_FALSE;
}
b->shminfo.shmid = shmget( IPC_PRIVATE, b->backxrb->ximage->bytes_per_line
* b->backxrb->ximage->height, IPC_CREAT|0777 );
if (b->shminfo.shmid < 0) {
_mesa_warning(NULL, "shmget failed while allocating back buffer.\n");
XDestroyImage( b->backxrb->ximage );
b->backxrb->ximage = NULL;
_mesa_warning(NULL, "alloc_back_buffer: Shared memory error (shmget), disabling.\n");
b->shm = 0;
return GL_FALSE;
}
b->shminfo.shmaddr = b->backxrb->ximage->data
= (char*)shmat( b->shminfo.shmid, 0, 0 );
if (b->shminfo.shmaddr == (char *) -1) {
_mesa_warning(NULL, "shmat() failed while allocating back buffer.\n");
XDestroyImage( b->backxrb->ximage );
shmctl( b->shminfo.shmid, IPC_RMID, 0 );
b->backxrb->ximage = NULL;
_mesa_warning(NULL, "alloc_back_buffer: Shared memory error (shmat), disabling.\n");
b->shm = 0;
return GL_FALSE;
}
b->shminfo.readOnly = False;
mesaXErrorFlag = 0;
old_handler = XSetErrorHandler( mesaHandleXError );
/* This may trigger the X protocol error we're ready to catch: */
XShmAttach( b->xm_visual->display, &b->shminfo );
XSync( b->xm_visual->display, False );
if (mesaXErrorFlag) {
/* we are on a remote display, this error is normal, don't print it */
XFlush( b->xm_visual->display );
mesaXErrorFlag = 0;
XDestroyImage( b->backxrb->ximage );
shmdt( b->shminfo.shmaddr );
shmctl( b->shminfo.shmid, IPC_RMID, 0 );
b->backxrb->ximage = NULL;
b->shm = 0;
(void) XSetErrorHandler( old_handler );
return GL_FALSE;
}
shmctl( b->shminfo.shmid, IPC_RMID, 0 ); /* nobody else needs it */
/* Finally, try an XShmPutImage to be really sure the extension works */
gc = XCreateGC( b->xm_visual->display, b->frontxrb->drawable, 0, NULL );
XShmPutImage( b->xm_visual->display, b->frontxrb->drawable, gc,
b->backxrb->ximage, 0, 0, 0, 0, 1, 1 /*one pixel*/, False );
XSync( b->xm_visual->display, False );
XFreeGC( b->xm_visual->display, gc );
(void) XSetErrorHandler( old_handler );
if (mesaXErrorFlag) {
XFlush( b->xm_visual->display );
mesaXErrorFlag = 0;
XDestroyImage( b->backxrb->ximage );
shmdt( b->shminfo.shmaddr );
shmctl( b->shminfo.shmid, IPC_RMID, 0 );
b->backxrb->ximage = NULL;
b->shm = 0;
return GL_FALSE;
}
return GL_TRUE;
#else
/* Can't compile XSHM support */
return GL_FALSE;
#endif
}
#endif
/*
* Setup an off-screen pixmap or Ximage to use as the back buffer.
* Input: b - the X/Mesa buffer
*/
void
xmesa_alloc_back_buffer( XMesaBuffer b, GLuint width, GLuint height )
{
if (width == 0 || height == 0)
return;
if (b->db_mode == BACK_XIMAGE) {
/* Deallocate the old backxrb->ximage, if any */
if (b->backxrb->ximage) {
#if defined(USE_XSHM) && !defined(XFree86Server)
if (b->shm) {
XShmDetach( b->xm_visual->display, &b->shminfo );
XDestroyImage( b->backxrb->ximage );
shmdt( b->shminfo.shmaddr );
}
else
#endif
XMesaDestroyImage( b->backxrb->ximage );
b->backxrb->ximage = NULL;
}
/* Allocate new back buffer */
#ifdef XFree86Server
/* Allocate a regular XImage for the back buffer. */
b->backxrb->ximage = XMesaCreateImage(b->xm_visual->BitsPerPixel,
width, height, NULL);
{
#else
if (b->shm == 0 || !alloc_shm_back_buffer(b, width, height)) {
/* Allocate a regular XImage for the back buffer. */
b->backxrb->ximage = XCreateImage( b->xm_visual->display,
b->xm_visual->visinfo->visual,
GET_VISUAL_DEPTH(b->xm_visual),
ZPixmap, 0, /* format, offset */
NULL,
width, height,
8, 0 ); /* pad, bytes_per_line */
#endif
if (!b->backxrb->ximage) {
_mesa_warning(NULL, "alloc_back_buffer: XCreateImage failed.\n");
return;
}
b->backxrb->ximage->data = (char *) MALLOC( b->backxrb->ximage->height
* b->backxrb->ximage->bytes_per_line );
if (!b->backxrb->ximage->data) {
_mesa_warning(NULL, "alloc_back_buffer: MALLOC failed.\n");
XMesaDestroyImage( b->backxrb->ximage );
b->backxrb->ximage = NULL;
}
else {
/* this call just updates the width/origin fields in the xrb */
b->backxrb->Base.AllocStorage(NULL, &b->backxrb->Base,
b->backxrb->Base.InternalFormat,
b->backxrb->ximage->width,
b->backxrb->ximage->height);
}
}
b->backxrb->pixmap = None;
}
else if (b->db_mode == BACK_PIXMAP) {
if (!width)
width = 1;
if (!height)
height = 1;
/* Free the old back pixmap */
if (b->backxrb->pixmap) {
XMesaFreePixmap( b->xm_visual->display, b->backxrb->pixmap );
}
/* Allocate new back pixmap */
b->backxrb->pixmap = XMesaCreatePixmap( b->xm_visual->display,
b->frontxrb->drawable,
width, height,
GET_VISUAL_DEPTH(b->xm_visual) );
b->backxrb->ximage = NULL;
}
}
/*
* A replacement for XAllocColor. This function should never
* fail to allocate a color. When XAllocColor fails, we return
* the nearest matching color. If we have to allocate many colors
@@ -715,10 +573,11 @@ noFaultXAllocColor( int client,
if (AllocColor(cmap,
&color->red, &color->green, &color->blue,
&color->pixel,
client) == Success) {
client) == Success)
#else
if (XAllocColor(dpy, cmap, color)) {
if (XAllocColor(dpy, cmap, color))
#endif
{
*exact = 1;
*alloced = 1;
return;
@@ -808,12 +667,12 @@ noFaultXAllocColor( int client,
/*
/**
* Do setup for PF_GRAYSCALE pixel format.
* Note that buffer may be NULL.
*/
static GLboolean setup_grayscale( int client, XMesaVisual v,
static GLboolean
setup_grayscale(int client, XMesaVisual v,
XMesaBuffer buffer, XMesaColormap cmap)
{
if (GET_VISUAL_DEPTH(v)<4 || GET_VISUAL_DEPTH(v)>16) {
@@ -893,7 +752,7 @@ static GLboolean setup_grayscale( int client, XMesaVisual v,
/*
/**
* Setup RGB rendering for a window with a PseudoColor, StaticColor,
* or 8-bit TrueColor visual visual. We try to allocate a palette of 225
* colors (5 red, 9 green, 5 blue) and dither to approximate a 24-bit RGB
@@ -901,7 +760,8 @@ static GLboolean setup_grayscale( int client, XMesaVisual v,
* visuals, it has also proven to work from 4-bit up to 16-bit visuals.
* Dithering code contributed by Bob Mercier.
*/
static GLboolean setup_dithered_color( int client, XMesaVisual v,
static GLboolean
setup_dithered_color(int client, XMesaVisual v,
XMesaBuffer buffer, XMesaColormap cmap)
{
if (GET_VISUAL_DEPTH(v)<4 || GET_VISUAL_DEPTH(v)>16) {
@@ -972,12 +832,13 @@ static GLboolean setup_dithered_color( int client, XMesaVisual v,
}
/*
/**
* Setup for Hewlett Packard Color Recovery 8-bit TrueColor mode.
* HPCR simulates 24-bit color fidelity with an 8-bit frame buffer.
* Special dithering tables have to be initialized.
*/
static void setup_8bit_hpcr( XMesaVisual v )
static void
setup_8bit_hpcr(XMesaVisual v)
{
/* HP Color Recovery contributed by: Alex De Bruyn (ad@lms.be)
* To work properly, the atom _HP_RGB_SMOOTH_MAP_LIST must be defined
@@ -1027,11 +888,11 @@ static void setup_8bit_hpcr( XMesaVisual v )
}
/*
/**
* Setup RGB rendering for a window with a True/DirectColor visual.
*/
static void setup_truecolor( XMesaVisual v, XMesaBuffer buffer,
XMesaColormap cmap )
static void
setup_truecolor(XMesaVisual v, XMesaBuffer buffer, XMesaColormap cmap)
{
unsigned long rmask, gmask, bmask;
(void) buffer;
@@ -1171,10 +1032,11 @@ static void setup_truecolor( XMesaVisual v, XMesaBuffer buffer,
/*
/**
* Setup RGB rendering for a window with a monochrome visual.
*/
static void setup_monochrome( XMesaVisual v, XMesaBuffer b )
static void
setup_monochrome( XMesaVisual v, XMesaBuffer b )
{
(void) b;
v->dithered_pf = v->undithered_pf = PF_1Bit;
@@ -1264,14 +1126,14 @@ initialize_visual_and_buffer(int client, XMesaVisual v, XMesaBuffer b,
if (b && window) {
/* Do window-specific initializations */
b->frontxrb->drawable = window;
b->frontxrb->pixmap = (XMesaPixmap) window;
/* these should have been set in create_xmesa_buffer */
ASSERT(b->frontxrb->drawable == window);
ASSERT(b->frontxrb->pixmap == (XMesaPixmap) window);
/* Setup for single/double buffering */
if (v->mesa_visual.doubleBufferMode) {
/* Double buffered */
b->shm = check_for_xshm( v->display );
xmesa_alloc_back_buffer(b, b->mesa_buffer.Width, b->mesa_buffer.Height);
}
/* X11 graphics contexts */
@@ -1732,13 +1594,13 @@ void XMesaDestroyContext( XMesaContext c )
/*
* XXX this isn't a public function! It's a hack for the 3Dfx driver.
* Create a new XMesaBuffer from an X window.
* Input: v - the XMesaVisual
* w - the window
* c - the context
* Return: new XMesaBuffer or NULL if error
/**
* 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
* \param c context used to initialize the buffer if 3Dfx mode in use.
* \return new XMesaBuffer or NULL if error
*/
XMesaBuffer
XMesaCreateWindowBuffer2(XMesaVisual v, XMesaWindow w, XMesaContext c)
@@ -1754,6 +1616,7 @@ XMesaCreateWindowBuffer2(XMesaVisual v, XMesaWindow w, XMesaContext c)
XMesaColormap cmap;
assert(v);
assert(w);
(void) c;
/* Check that window depth matches visual depth */
@@ -1790,10 +1653,9 @@ XMesaCreateWindowBuffer2(XMesaVisual v, XMesaWindow w, XMesaContext c)
}
#endif
b = alloc_xmesa_buffer(v, WINDOW, cmap);
if (!b) {
b = create_xmesa_buffer((XMesaDrawable) w, WINDOW, v, cmap);
if (!b)
return NULL;
}
if (!initialize_visual_and_buffer( client, v, b, v->mesa_visual.rgbMode,
(XMesaDrawable) w, cmap )) {
@@ -1908,10 +1770,9 @@ XMesaCreatePixmapBuffer(XMesaVisual v, XMesaPixmap p, XMesaColormap cmap)
assert(v);
b = alloc_xmesa_buffer(v, PIXMAP, cmap);
if (!b) {
b = create_xmesa_buffer((XMesaDrawable) p, PIXMAP, v, cmap);
if (!b)
return NULL;
}
#ifdef XFree86Server
client = CLIENT_ID(((XMesaDrawable)p)->id);
@@ -1940,14 +1801,16 @@ XMesaCreatePBuffer(XMesaVisual v, XMesaColormap cmap,
XMesaDrawable drawable; /* X Pixmap Drawable */
XMesaBuffer b;
b = alloc_xmesa_buffer(v, PBUFFER, cmap);
if (!b) {
return NULL;
}
/* allocate pixmap for front buffer */
root = RootWindow( v->display, v->visinfo->screen );
drawable = XCreatePixmap( v->display, root, width, height, v->visinfo->depth );
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(client, v, b, v->mesa_visual.rgbMode,
drawable, cmap)) {
@@ -2009,6 +1872,27 @@ void XMesaDestroyBuffer( XMesaBuffer b )
}
/**
* Query the current window size and update the corresponding GLframebuffer
* and all attached renderbuffers.
* Called when:
* 1. the first time a buffer is bound to a context.
* 2. from glViewport to poll for window size changes
* 3. from the XMesaResizeBuffers() API function.
*/
void
xmesa_check_and_update_buffer_size(XMesaContext xmctx, XMesaBuffer drawBuffer)
{
GLuint width, height;
xmesa_get_window_size(xmctx->display, drawBuffer, &width, &height);
if (drawBuffer->mesa_buffer.Width != width ||
drawBuffer->mesa_buffer.Height != height) {
_mesa_resize_framebuffer(&(xmctx->mesa),
&(drawBuffer->mesa_buffer), width, height);
}
drawBuffer->mesa_buffer.Initialized = GL_TRUE;
}
/*
* Bind buffer b to context c and make c the current rendering context.
@@ -2041,7 +1925,7 @@ GLboolean XMesaMakeCurrent2( XMesaContext c, XMesaBuffer drawBuffer,
if (&(c->mesa) == _mesa_get_current_context()
&& c->mesa.DrawBuffer == &drawBuffer->mesa_buffer
&& c->mesa.ReadBuffer == &readBuffer->mesa_buffer
&& ((XMesaBuffer) c->mesa.DrawBuffer)->wasCurrent) {
&& XMESA_BUFFER(c->mesa.DrawBuffer)->wasCurrent) {
/* same context and buffer, do nothing */
return GL_TRUE;
}
@@ -2053,6 +1937,12 @@ GLboolean XMesaMakeCurrent2( XMesaContext c, XMesaBuffer drawBuffer,
*/
_glapi_check_multithread();
if (!drawBuffer->mesa_buffer.Initialized)
xmesa_check_and_update_buffer_size(c, drawBuffer);
if (!readBuffer->mesa_buffer.Initialized)
xmesa_check_and_update_buffer_size(c, readBuffer);
_mesa_make_current(&(c->mesa),
&drawBuffer->mesa_buffer,
&readBuffer->mesa_buffer);
@@ -2123,7 +2013,7 @@ XMesaBuffer XMesaGetCurrentReadBuffer( void )
{
GET_CURRENT_CONTEXT(ctx);
if (ctx) {
return (XMesaBuffer) (ctx->ReadBuffer);
return XMESA_BUFFER(ctx->ReadBuffer);
}
else {
return 0;
@@ -2212,9 +2102,7 @@ static void FXgetImage( XMesaBuffer b )
GET_CURRENT_CONTEXT(ctx);
static unsigned short pixbuf[MAX_WIDTH];
GLuint x, y;
int xpos, ypos;
XMesaWindow root;
unsigned int bw, depth, width, height;
GLuint width, height;
XMesaContext xmesa = XMESA_CONTEXT(ctx);
#ifdef XFree86Server
@@ -2224,15 +2112,14 @@ static void FXgetImage( XMesaBuffer b )
height = b->frontxrb->pixmap->height;
depth = b->frontxrb->pixmap->depth;
#else
XGetGeometry( b->xm_visual->display, b->frontxrb->pixmap,
&root, &xpos, &ypos, &width, &height, &bw, &depth);
xmesa_get_window_size(b->display, b, &width, &height);
x = y = 0;
#endif
if (b->mesa_buffer.Width != width || b->mesa_buffer.Height != height) {
b->mesa_buffer.Width = MIN2((int)width, b->FXctx->width);
b->mesa_buffer.Height = MIN2((int)height, b->FXctx->height);
if (b->mesa_buffer.Width & 1)
b->mesa_buffer.Width--; /* prevent odd width */
xmesa_alloc_back_buffer(b, b->mesa_buffer.Width, b->mesa_buffer.Height);
}
/* [dBorca] we're always in the right GR_COLORFORMAT... aren't we? */
@@ -2646,24 +2533,11 @@ unsigned long XMesaDitherColor( XMesaContext xmesa, GLint x, GLint y,
* This is typically called when the window size changes and we need
* to reallocate the buffer's back/depth/stencil/accum buffers.
*/
void XMesaResizeBuffers( XMesaBuffer b )
void
XMesaResizeBuffers( XMesaBuffer b )
{
#ifdef XFree86Server
GLuint winwidth, winheight;
GET_CURRENT_CONTEXT(ctx);
winwidth = MIN2(b->frontxrb->drawable->width, MAX_WIDTH);
winheight = MIN2(b->frontxrb->drawable->height, MAX_HEIGHT);
xmesa_resize_buffers(ctx, &(b->mesa_buffer), winwidth, winheight);
#else
Window root;
int xpos, ypos;
unsigned int width, height, bw, depth;
GET_CURRENT_CONTEXT(ctx);
XGetGeometry( b->xm_visual->display, b->frontxrb->pixmap,
&root, &xpos, &ypos, &width, &height, &bw, &depth);
xmesa_resize_buffers(ctx, &(b->mesa_buffer), width, height);
#endif
XMesaContext xmctx = XMESA_CONTEXT(ctx);
xmesa_check_and_update_buffer_size(xmctx, b);
}

223
src/mesa/drivers/x11/xm_buffer.c
View File

@@ -1,8 +1,8 @@
/*
* Mesa 3-D graphics library
* Version: 6.5
* Version: 6.5.2
*
* Copyright (C) 1999-2005 Brian Paul All Rights Reserved.
* Copyright (C) 1999-2006 Brian Paul All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
@@ -23,6 +23,12 @@
*/
/**
* \file xm_buffer.h
* Framebuffer and renderbuffer-related functions.
*/
#include "glxheader.h"
#include "GL/xmesa.h"
#include "xmesaP.h"
@@ -30,6 +36,213 @@
#include "renderbuffer.h"
#ifndef XFree86Server
static volatile int mesaXErrorFlag = 0;
/**
* Catches potential Xlib errors.
*/
static int
mesaHandleXError(XMesaDisplay *dpy, XErrorEvent *event)
{
(void) dpy;
(void) event;
mesaXErrorFlag = 1;
return 0;
}
#endif
/**
* Allocate a shared memory XImage back buffer for the given XMesaBuffer.
* Return: GL_TRUE if success, GL_FALSE if error
*/
#ifndef XFree86Server
static GLboolean
alloc_back_shm_ximage(XMesaBuffer b, GLuint width, GLuint height)
{
#ifdef USE_XSHM
/*
* We have to do a _lot_ of error checking here to be sure we can
* really use the XSHM extension. It seems different servers trigger
* errors at different points if the extension won't work. Therefore
* we have to be very careful...
*/
GC gc;
int (*old_handler)(XMesaDisplay *, XErrorEvent *);
if (width == 0 || height == 0) {
/* this will be true the first time we're called on 'b' */
return GL_FALSE;
}
b->backxrb->ximage = XShmCreateImage(b->xm_visual->display,
b->xm_visual->visinfo->visual,
b->xm_visual->visinfo->depth,
ZPixmap, NULL, &b->shminfo,
width, height);
if (b->backxrb->ximage == NULL) {
_mesa_warning(NULL, "alloc_back_buffer: Shared memory error (XShmCreateImage), disabling.\n");
b->shm = 0;
return GL_FALSE;
}
b->shminfo.shmid = shmget(IPC_PRIVATE, b->backxrb->ximage->bytes_per_line
* b->backxrb->ximage->height, IPC_CREAT|0777);
if (b->shminfo.shmid < 0) {
_mesa_warning(NULL, "shmget failed while allocating back buffer.\n");
XDestroyImage(b->backxrb->ximage);
b->backxrb->ximage = NULL;
_mesa_warning(NULL, "alloc_back_buffer: Shared memory error (shmget), disabling.\n");
b->shm = 0;
return GL_FALSE;
}
b->shminfo.shmaddr = b->backxrb->ximage->data
= (char*)shmat(b->shminfo.shmid, 0, 0);
if (b->shminfo.shmaddr == (char *) -1) {
_mesa_warning(NULL, "shmat() failed while allocating back buffer.\n");
XDestroyImage(b->backxrb->ximage);
shmctl(b->shminfo.shmid, IPC_RMID, 0);
b->backxrb->ximage = NULL;
_mesa_warning(NULL, "alloc_back_buffer: Shared memory error (shmat), disabling.\n");
b->shm = 0;
return GL_FALSE;
}
b->shminfo.readOnly = False;
mesaXErrorFlag = 0;
old_handler = XSetErrorHandler(mesaHandleXError);
/* This may trigger the X protocol error we're ready to catch: */
XShmAttach(b->xm_visual->display, &b->shminfo);
XSync(b->xm_visual->display, False);
if (mesaXErrorFlag) {
/* we are on a remote display, this error is normal, don't print it */
XFlush(b->xm_visual->display);
mesaXErrorFlag = 0;
XDestroyImage(b->backxrb->ximage);
shmdt(b->shminfo.shmaddr);
shmctl(b->shminfo.shmid, IPC_RMID, 0);
b->backxrb->ximage = NULL;
b->shm = 0;
(void) XSetErrorHandler(old_handler);
return GL_FALSE;
}
shmctl(b->shminfo.shmid, IPC_RMID, 0); /* nobody else needs it */
/* Finally, try an XShmPutImage to be really sure the extension works */
gc = XCreateGC(b->xm_visual->display, b->frontxrb->drawable, 0, NULL);
XShmPutImage(b->xm_visual->display, b->frontxrb->drawable, gc,
b->backxrb->ximage, 0, 0, 0, 0, 1, 1 /*one pixel*/, False);
XSync(b->xm_visual->display, False);
XFreeGC(b->xm_visual->display, gc);
(void) XSetErrorHandler(old_handler);
if (mesaXErrorFlag) {
XFlush(b->xm_visual->display);
mesaXErrorFlag = 0;
XDestroyImage(b->backxrb->ximage);
shmdt(b->shminfo.shmaddr);
shmctl(b->shminfo.shmid, IPC_RMID, 0);
b->backxrb->ximage = NULL;
b->shm = 0;
return GL_FALSE;
}
return GL_TRUE;
#else
/* Can't compile XSHM support */
return GL_FALSE;
#endif
}
#endif
/**
* Setup an off-screen pixmap or Ximage to use as the back buffer.
* Input: b - the X/Mesa buffer
*/
static void
alloc_back_buffer(XMesaBuffer b, GLuint width, GLuint height)
{
if (width == 0 || height == 0)
return;
if (b->db_mode == BACK_XIMAGE) {
/* Deallocate the old backxrb->ximage, if any */
if (b->backxrb->ximage) {
#if defined(USE_XSHM) && !defined(XFree86Server)
if (b->shm) {
XShmDetach(b->xm_visual->display, &b->shminfo);
XDestroyImage(b->backxrb->ximage);
shmdt(b->shminfo.shmaddr);
}
else
#endif
XMesaDestroyImage(b->backxrb->ximage);
b->backxrb->ximage = NULL;
}
/* Allocate new back buffer */
#ifdef XFree86Server
/* Allocate a regular XImage for the back buffer. */
b->backxrb->ximage = XMesaCreateImage(b->xm_visual->BitsPerPixel,
width, height, NULL);
{
#else
if (b->shm == 0 || !alloc_back_shm_ximage(b, width, height)) {
/* Allocate a regular XImage for the back buffer. */
b->backxrb->ximage = XCreateImage(b->xm_visual->display,
b->xm_visual->visinfo->visual,
GET_VISUAL_DEPTH(b->xm_visual),
ZPixmap, 0, /* format, offset */
NULL,
width, height,
8, 0); /* pad, bytes_per_line */
#endif
if (!b->backxrb->ximage) {
_mesa_warning(NULL, "alloc_back_buffer: XCreateImage failed.\n");
return;
}
b->backxrb->ximage->data = (char *) MALLOC(b->backxrb->ximage->height
* b->backxrb->ximage->bytes_per_line);
if (!b->backxrb->ximage->data) {
_mesa_warning(NULL, "alloc_back_buffer: MALLOC failed.\n");
XMesaDestroyImage(b->backxrb->ximage);
b->backxrb->ximage = NULL;
}
else {
/* this call just updates the width/origin fields in the xrb */
b->backxrb->Base.AllocStorage(NULL, &b->backxrb->Base,
b->backxrb->Base.InternalFormat,
b->backxrb->ximage->width,
b->backxrb->ximage->height);
}
}
b->backxrb->pixmap = None;
}
else if (b->db_mode == BACK_PIXMAP) {
if (!width)
width = 1;
if (!height)
height = 1;
/* Free the old back pixmap */
if (b->backxrb->pixmap) {
XMesaFreePixmap(b->xm_visual->display, b->backxrb->pixmap);
}
/* Allocate new back pixmap */
b->backxrb->pixmap = XMesaCreatePixmap(b->xm_visual->display,
b->frontxrb->drawable,
width, height,
GET_VISUAL_DEPTH(b->xm_visual));
b->backxrb->ximage = NULL;
}
}
static void
xmesa_delete_renderbuffer(struct gl_renderbuffer *rb)
{
@@ -68,7 +281,6 @@ xmesa_alloc_front_storage(GLcontext *ctx, struct gl_renderbuffer *rb,
/**
* Reallocate renderbuffer storage for back color buffer.
* XXX we should resize the back pixmap/ximage here.
*/
static GLboolean
xmesa_alloc_back_storage(GLcontext *ctx, struct gl_renderbuffer *rb,
@@ -76,7 +288,12 @@ xmesa_alloc_back_storage(GLcontext *ctx, struct gl_renderbuffer *rb,
{
struct xmesa_renderbuffer *xrb = xmesa_renderbuffer(rb);
/* reallocate the back buffer XImage or Pixmap */
assert(xrb->Parent);
alloc_back_buffer(xrb->Parent, width, height);
/* same as front buffer */
/* XXX why is this here? */
(void) xmesa_alloc_front_storage(ctx, rb, internalFormat, width, height);
/* plus... */

100
src/mesa/drivers/x11/xm_dd.c
View File

@@ -23,6 +23,11 @@
*/
/**
* \file xm_dd.h
* General device driver functions for Xlib driver.
*/
#include "glxheader.h"
#include "bufferobj.h"
#include "buffers.h"
@@ -89,47 +94,12 @@ const int xmesa_kernel1[16] = {
};
/*
* Return the size (width, height) of the X window for the given GLframebuffer.
* Output: width - width of buffer in pixels.
* height - height of buffer in pixels.
*/
/** XXX obsolete ***/
static void
get_buffer_size( GLframebuffer *buffer, GLuint *width, GLuint *height )
{
/* We can do this cast because the first field in the XMesaBuffer
* struct is a GLframebuffer struct. If this weren't true, we'd
* need a pointer from the GLframebuffer to the XMesaBuffer.
*/
const XMesaBuffer xmBuffer = (XMesaBuffer) buffer;
unsigned int winwidth, winheight;
#ifdef XFree86Server
/* XFree86 GLX renderer */
winwidth = MIN2(xmBuffer->frontxrb->drawable->width, MAX_WIDTH);
winheight = MIN2(xmBuffer->frontxrb->drawable->height, MAX_HEIGHT);
#else
Window root;
Status stat;
int winx, winy;
unsigned int bw, d;
_glthread_LOCK_MUTEX(_xmesa_lock);
XSync(xmBuffer->xm_visual->display, 0); /* added for Chromium */
stat = XGetGeometry( xmBuffer->xm_visual->display, xmBuffer->frontxrb->pixmap,
&root, &winx, &winy, &winwidth, &winheight, &bw, &d );
_glthread_UNLOCK_MUTEX(_xmesa_lock);
if (!stat) {
/* probably querying a window that's recently been destroyed */
_mesa_warning(NULL, "XGetGeometry failed!\n");
*width = *height = 1;
return;
}
#endif
*width = winwidth;
*height = winheight;
XMesaBuffer b = XMESA_BUFFER(buffer);
xmesa_get_window_size(b->display, b, width, height);
}
@@ -567,26 +537,6 @@ clear_buffers( GLcontext *ctx, GLbitfield mask,
}
/**
* Called by ctx->Driver.ResizeBuffers()
* Resize the front/back colorbuffers to match the latest window size.
*/
void
xmesa_resize_buffers(GLcontext *ctx, GLframebuffer *buffer,
GLuint width, GLuint height)
{
/* We can do this cast because the first field in the XMesaBuffer
* struct is a GLframebuffer struct. If this weren't true, we'd
* need a pointer from the GLframebuffer to the XMesaBuffer.
*/
XMesaBuffer xmBuffer = (XMesaBuffer) buffer;
xmesa_alloc_back_buffer(xmBuffer, width, height);
_mesa_resize_framebuffer(ctx, buffer, width, height);
}
#ifndef XFree86Server
/* XXX this was never tested in the Xserver environment */
@@ -1120,33 +1070,6 @@ choose_tex_format( GLcontext *ctx, GLint internalFormat,
}
/**
* Get the current drawing (and reading) window's size and update the
* corresponding gl_framebuffer(s) if needed.
*/
static void
update_framebuffer_size(GLcontext *ctx)
{
struct gl_framebuffer *fb = ctx->WinSysDrawBuffer;
GLuint newWidth, newHeight;
get_buffer_size(fb, &newWidth, &newHeight);
if (newWidth != fb->Width || newHeight != fb->Height) {
xmesa_resize_buffers(ctx, fb, newWidth, newHeight);
}
if (ctx->WinSysReadBuffer != ctx->WinSysDrawBuffer) {
/* Update readbuffer's size */
struct gl_framebuffer *fb = ctx->WinSysReadBuffer;
GLuint newWidth, newHeight;
get_buffer_size(fb, &newWidth, &newHeight);
if (newWidth != fb->Width || newHeight != fb->Height) {
xmesa_resize_buffers(ctx, fb, newWidth, newHeight);
ctx->NewState |= _NEW_BUFFERS;
}
}
}
/**
* Called by glViewport.
* This is a good time for us to poll the current X window size and adjust
@@ -1161,11 +1084,15 @@ update_framebuffer_size(GLcontext *ctx)
static void
xmesa_viewport(GLcontext *ctx, GLint x, GLint y, GLsizei w, GLsizei h)
{
XMesaContext xmctx = XMESA_CONTEXT(ctx);
XMesaBuffer xmdrawbuf = XMESA_BUFFER(ctx->WinSysDrawBuffer);
XMesaBuffer xmreadbuf = XMESA_BUFFER(ctx->WinSysReadBuffer);
xmesa_check_and_update_buffer_size(xmctx, xmdrawbuf);
xmesa_check_and_update_buffer_size(xmctx, xmreadbuf);
(void) x;
(void) y;
(void) w;
(void) h;
update_framebuffer_size(ctx);
}
@@ -1258,7 +1185,6 @@ xmesa_init_driver_functions( XMesaVisual xmvisual,
driver->ColorMask = color_mask;
driver->Enable = enable;
driver->Clear = clear_buffers;
driver->ResizeBuffers = xmesa_resize_buffers;
driver->Viewport = xmesa_viewport;
#ifndef XFree86Server
driver->CopyPixels = xmesa_CopyPixels;

110
src/mesa/drivers/x11/xmesaP.h
View File

@@ -81,8 +81,9 @@ enum pixel_format {
};
/*
* "Derived" from GLvisual. Basically corresponds to an XVisualInfo.
/**
* Visual inforation, derived from GLvisual.
* Basically corresponds to an XVisualInfo.
*/
struct xmesa_visual {
GLvisual mesa_visual; /* Device independent visual parameters */
@@ -127,8 +128,9 @@ struct xmesa_visual {
};
/*
* "Derived" from __GLcontextRec. Basically corresponds to a GLXContext.
/**
* Context info, dDerived from GLcontext.
* Basically corresponds to a GLXContext.
*/
struct xmesa_context {
GLcontext mesa; /* the core library context (containment) */
@@ -146,7 +148,9 @@ struct xmesa_context {
};
/**
* Types of X/GLX drawables we might render into.
*/
typedef enum {
WINDOW, /* An X window */
GLXWINDOW, /* GLX window */
@@ -155,9 +159,11 @@ typedef enum {
} BufferType;
/* Values for db_mode: */
/** Values for db_mode: */
/*@{*/
#define BACK_PIXMAP 1
#define BACK_XIMAGE 2
/*@}*/
/**
@@ -175,6 +181,7 @@ struct xmesa_renderbuffer
{
struct gl_renderbuffer Base; /* Base class */
XMesaBuffer Parent; /**< The XMesaBuffer this renderbuffer belongs to */
XMesaDrawable drawable; /* Usually the X window ID */
XMesaPixmap pixmap; /* Back color buffer */
XMesaImage *ximage; /* The back buffer, if not using a Pixmap */
@@ -194,8 +201,9 @@ struct xmesa_renderbuffer
};
/*
* "Derived" from GLframebuffer. Basically corresponds to a GLXDrawable.
/**
* Framebuffer information, derived from.
* Basically corresponds to a GLXDrawable.
*/
struct xmesa_buffer {
GLframebuffer mesa_buffer; /* depth, stencil, accum, etc buffers */
@@ -264,7 +272,7 @@ struct xmesa_buffer {
};
/*
/**
* If pixelformat==PF_TRUECOLOR:
*/
#define PACK_TRUECOLOR( PIXEL, R, G, B ) \
@@ -273,7 +281,7 @@ struct xmesa_buffer {
| xmesa->xm_visual->BtoPixel[B]; \
/*
/**
* If pixelformat==PF_TRUEDITHER:
*/
#define PACK_TRUEDITHER( PIXEL, X, Y, R, G, B ) \
@@ -286,14 +294,14 @@ struct xmesa_buffer {
/*
/**
* If pixelformat==PF_8A8B8G8R:
*/
#define PACK_8A8B8G8R( R, G, B, A ) \
( ((A) << 24) | ((B) << 16) | ((G) << 8) | (R) )
/*
/**
* Like PACK_8A8B8G8R() but don't use alpha. This is usually an acceptable
* shortcut.
*/
@@ -301,19 +309,19 @@ struct xmesa_buffer {
/*
/**
* If pixelformat==PF_8R8G8B:
*/
#define PACK_8R8G8B( R, G, B) ( ((R) << 16) | ((G) << 8) | (B) )
/*
/**
* If pixelformat==PF_5R6G5B:
*/
#define PACK_5R6G5B( R, G, B) ( (((R) & 0xf8) << 8) | (((G) & 0xfc) << 3) | ((B) >> 3) )
/*
/**
* If pixelformat==PF_8A8R8G8B:
*/
#define PACK_8A8R8G8B( R, G, B, A ) \
@@ -321,7 +329,7 @@ struct xmesa_buffer {
/*
/**
* If pixelformat==PF_DITHER:
*
* Improved 8-bit RGB dithering code contributed by Bob Mercier
@@ -398,7 +406,7 @@ extern const int xmesa_kernel8[DITH_DY * DITH_DX];
/*
/**
* If pixelformat==PF_LOOKUP:
*/
#define _dither_lookup(C, c) (((unsigned)((DITH_N * (C - 1) + 1) * c)) >> 12)
@@ -412,8 +420,7 @@ extern const int xmesa_kernel8[DITH_DY * DITH_DX];
_dither_lookup(DITH_B, (B)))]
/*
/**
* If pixelformat==PF_HPCR:
*
* HP Color Recovery dithering (ad@lms.be 30/08/95)
@@ -433,7 +440,7 @@ extern const short xmesa_HPCR_DRGB[3][2][16];
/*
/**
* If pixelformat==PF_1BIT:
*/
extern const int xmesa_kernel1[16];
@@ -444,20 +451,20 @@ extern const int xmesa_kernel1[16];
/*
/**
* If pixelformat==PF_GRAYSCALE:
*/
#define GRAY_RGB( R, G, B ) XMESA_BUFFER(ctx->DrawBuffer)->color_table[((R) + (G) + (B))/3]
/*
/**
* Converts a GL window Y coord to an X window Y coord:
*/
#define YFLIP(XRB, Y) ((XRB)->bottom - (Y))
/*
/**
* Return the address of a 1, 2 or 4-byte pixel in the buffer's XImage:
* X==0 is left, Y==0 is bottom.
*/
@@ -475,23 +482,6 @@ extern const int xmesa_kernel1[16];
/*
* Return pointer to XMesaContext corresponding to a Mesa GLcontext.
* Since we're using structure containment, it's just a cast!.
* XXX should use inlined function for better type safety.
*/
#define XMESA_CONTEXT(MESACTX) ((XMesaContext) (MESACTX))
/*
* Return pointer to XMesaBuffer corresponding to a Mesa GLframebuffer.
* Since we're using structure containment, it's just a cast!.
* XXX should use inlined function for better type safety.
*/
#define XMESA_BUFFER(MESABUFF) ((XMesaBuffer) (MESABUFF))
/*
* External functions:
*/
@@ -506,21 +496,25 @@ xmesa_color_to_pixel( GLcontext *ctx,
GLuint pixelFormat );
extern void
xmesa_alloc_back_buffer(XMesaBuffer b, GLuint width, GLuint height);
xmesa_get_window_size(XMesaDisplay *dpy, XMesaBuffer b,
GLuint *width, GLuint *height);
extern void xmesa_resize_buffers(GLcontext *ctx, GLframebuffer *buffer,
GLuint width, GLuint height);
extern void
xmesa_check_and_update_buffer_size(XMesaContext xmctx, XMesaBuffer drawBuffer);
extern void xmesa_init_driver_functions( XMesaVisual xmvisual,
extern void
xmesa_init_driver_functions( XMesaVisual xmvisual,
struct dd_function_table *driver );
extern void xmesa_update_state( GLcontext *ctx, GLbitfield new_state );
extern void
xmesa_update_state( GLcontext *ctx, GLbitfield new_state );
extern void
xmesa_set_renderbuffer_funcs(struct xmesa_renderbuffer *xrb,
enum pixel_format pixelformat, GLint depth);
extern void xmesa_destroy_buffers_on_display(XMesaDisplay *dpy);
extern void
xmesa_destroy_buffers_on_display(XMesaDisplay *dpy);
/**
@@ -533,6 +527,30 @@ xmesa_renderbuffer(struct gl_renderbuffer *rb)
}
/**
* Return pointer to XMesaContext corresponding to a Mesa GLcontext.
* Since we're using structure containment, it's just a cast!.
* XXX should use inlined function for better type safety.
*/
static INLINE XMesaContext
XMESA_CONTEXT(GLcontext *ctx)
{
return (XMesaContext) ctx;
}
/**
* Return pointer to XMesaBuffer corresponding to a Mesa GLframebuffer.
* Since we're using structure containment, it's just a cast!.
* XXX should use inlined function for better type safety.
*/
static INLINE XMesaBuffer
XMESA_BUFFER(GLframebuffer *b)
{
return (XMesaBuffer) b;
}
/* Plugged into the software rasterizer. Try to use internal
* swrast-style point, line and triangle functions.
*/