xlib: remove xm_span.c and related code

src/mesa/drivers/x11/Makefile

@@ -30,7 +30,6 @@ SOURCES = \
 	xm_buffer.c \
 	xm_dd.c \
 	xm_line.c \
-	xm_span.c \
 	xm_tri.c
 
 OBJECTS = $(SOURCES:.c=.o)

src/mesa/drivers/x11/xm_api.c

@@ -600,8 +600,6 @@ initialize_visual_and_buffer(XMesaVisual v, XMesaBuffer b,
    }
 
    if (b && window) {
-      char *data;
-
       /* Do window-specific initializations */
 
       /* these should have been set in create_xmesa_buffer */
@@ -633,19 +631,6 @@ initialize_visual_and_buffer(XMesaVisual v, XMesaBuffer b,
                                GCGraphicsExposures, &gcvalues);
       }
       XMesaSetFunction( v->display, b->swapgc, GXcopy );
-
-      /* Initialize the row buffer XImage for use in write_color_span() */
-      data = (char*) MALLOC(MAX_WIDTH*4);
-      b->rowimage = XCreateImage( v->display,
-                                  v->visinfo->visual,
-                                  v->visinfo->depth,
-                                  ZPixmap, 0,           /*format, offset*/
-                                  data,                 /*data*/
-                                  MAX_WIDTH, 1,         /*width, height*/
-                                  32,                   /*bitmap_pad*/
-                                  0                     /*bytes_per_line*/ );
-      if (!b->rowimage)
-         return GL_FALSE;
    }
 
    return GL_TRUE;

src/mesa/drivers/x11/xm_buffer.c

@@ -409,12 +409,6 @@ xmesa_delete_framebuffer(struct gl_framebuffer *fb)
       }
    }
 
-   if (b->rowimage) {
-      free( b->rowimage->data );
-      b->rowimage->data = NULL;
-      XMesaDestroyImage( b->rowimage );
-   }
-
    _mesa_free_framebuffer_data(fb);
    free(fb);
 }

src/mesa/drivers/x11/xm_dd.c

@@ -720,15 +720,11 @@ xmesa_update_state( struct gl_context *ctx, GLbitfield new_state )
 
       front_xrb = xmbuf->frontxrb;
       if (front_xrb) {
-         xmesa_set_renderbuffer_funcs(front_xrb, xmesa->pixelformat,
-                                      xmesa->xm_visual->BitsPerPixel);
          front_xrb->clearFunc = clear_pixmap;
       }
 
       back_xrb = xmbuf->backxrb;
       if (back_xrb) {
-         xmesa_set_renderbuffer_funcs(back_xrb, xmesa->pixelformat,
-                                      xmesa->xm_visual->BitsPerPixel);
          if (xmbuf->backxrb->pixmap) {
             back_xrb->clearFunc = clear_pixmap;
          }

src/mesa/drivers/x11/xm_span.c

@@ -1,219 +0,0 @@
-/*
- * Mesa 3-D graphics library
- * Version:  6.3
- *
- * Copyright (C) 1999-2004  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"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included
- * in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-
-#include "glxheader.h"
-#include "main/context.h"
-#include "main/macros.h"
-#include "main/imports.h"
-#include "main/mtypes.h"
-#include "xmesaP.h"
-
-#include "swrast/swrast.h"
-
-
-/*
- * The following functions are used to trap XGetImage() calls which
- * generate BadMatch errors if the drawable isn't mapped.
- */
-
-static int caught_xgetimage_error = 0;
-static int (*old_xerror_handler)( XMesaDisplay *dpy, XErrorEvent *ev );
-static unsigned long xgetimage_serial;
-
-/*
- * This is the error handler which will be called if XGetImage fails.
- */
-static int xgetimage_error_handler( XMesaDisplay *dpy, XErrorEvent *ev )
-{
-   if (ev->serial==xgetimage_serial && ev->error_code==BadMatch) {
-      /* caught the expected error */
-      caught_xgetimage_error = 0;
-   }
-   else {
-      /* call the original X error handler, if any.  otherwise ignore */
-      if (old_xerror_handler) {
-         (*old_xerror_handler)( dpy, ev );
-      }
-   }
-   return 0;
-}
-
-
-/*
- * Call this right before XGetImage to setup error trap.
- */
-static void catch_xgetimage_errors( XMesaDisplay *dpy )
-{
-   xgetimage_serial = NextRequest( dpy );
-   old_xerror_handler = XSetErrorHandler( xgetimage_error_handler );
-   caught_xgetimage_error = 0;
-}
-
-
-/*
- * Call this right after XGetImage to check if an error occured.
- */
-static int check_xgetimage_errors( void )
-{
-   /* restore old handler */
-   (void) XSetErrorHandler( old_xerror_handler );
-   /* return 0=no error, 1=error caught */
-   return caught_xgetimage_error;
-}
-
-
-/*
- * Read a pixel from an X drawable.
- */
-static unsigned long read_pixel( XMesaDisplay *dpy,
-                                 XMesaDrawable d, int x, int y )
-{
-   unsigned long p;
-   XMesaImage *pixel = NULL;
-   int error;
-
-   catch_xgetimage_errors( dpy );
-   pixel = XGetImage( dpy, d, x, y, 1, 1, AllPlanes, ZPixmap );
-   error = check_xgetimage_errors();
-   if (pixel && !error) {
-      p = XMesaGetPixel( pixel, 0, 0 );
-   }
-   else {
-      p = 0;
-   }
-   if (pixel) {
-      XMesaDestroyImage( pixel );
-   }
-   return p;
-}
-
-
-
-/*
- * The Mesa library needs to be able to draw pixels in a number of ways:
- *   1. RGB vs Color Index
- *   2. as horizontal spans (polygons, images) vs random locations (points,
- *      lines)
- *   3. different color per-pixel or same color for all pixels
- *
- * Furthermore, the X driver needs to support rendering to 3 possible
- * "buffers", usually one, but sometimes two at a time:
- *   1. The front buffer as an X window
- *   2. The back buffer as a Pixmap
- *   3. The back buffer as an XImage
- *
- * Finally, if the back buffer is an XImage, we can avoid using XPutPixel and
- * optimize common cases such as 24-bit and 8-bit modes.
- *
- * By multiplication, there's at least 48 possible combinations of the above.
- *
- * Below are implementations of the most commonly used combinations.  They are
- * accessed through function pointers which get initialized here and are used
- * directly from the Mesa library.  The 8 function pointers directly correspond
- * to the first 3 cases listed above.
- *
- *
- * The function naming convention is:
- *
- *   [put|get]_[row|values]_[format]_[pixmap|ximage]
- *
- * New functions optimized for specific cases can be added without too much
- * trouble.  An example might be the 24-bit TrueColor mode 8A8R8G8B which is
- * found on IBM RS/6000 X servers.
- */
-
-
-
-
-
-
-
-/**********************************************************************/
-/*****                      Pixel reading                         *****/
-/**********************************************************************/
-
-/**
- * Do clip testing prior to calling XGetImage.  If any of the region lies
- * outside the screen's bounds, XGetImage will return NULL.
- * We use XTranslateCoordinates() to check if that's the case and
- * adjust the x, y and length parameters accordingly.
- * \return  -1 if span is totally clipped away,
- *          else return number of pixels to skip in the destination array.
- */
-static int
-clip_for_xgetimage(struct gl_context *ctx, XMesaPixmap pixmap, GLuint *n, GLint *x, GLint *y)
-{
-   XMesaContext xmesa = XMESA_CONTEXT(ctx);
-   XMesaBuffer source = XMESA_BUFFER(ctx->DrawBuffer);
-   Window rootWin = RootWindow(xmesa->display, 0);
-   Window child;
-   GLint screenWidth = WidthOfScreen(DefaultScreenOfDisplay(xmesa->display));
-   GLint dx, dy;
-   if (source->type == PBUFFER || source->type == PIXMAP)
-      return 0;
-   XTranslateCoordinates(xmesa->display, pixmap, rootWin,
-                         *x, *y, &dx, &dy, &child);
-   if (dx >= screenWidth) {
-      /* totally clipped on right */
-      return -1;
-   }
-   if (dx < 0) {
-      /* clipped on left */
-      GLint clip = -dx;
-      if (clip >= (GLint) *n)
-         return -1;  /* totally clipped on left */
-      *x += clip;
-      *n -= clip;
-      dx = 0;
-      return clip;
-   }
-   if ((GLint) (dx + *n) > screenWidth) {
-      /* clipped on right */
-      GLint clip = dx + *n - screenWidth;
-      *n -= clip;
-   }
-   return 0;
-}
-
-
-#define GET_XRB(XRB) \
-   struct xmesa_renderbuffer *XRB = xmesa_renderbuffer(rb)
-
-
-
-
-
-/**
- * Initialize the renderbuffer's PutRow, GetRow, etc. functions.
- * This would generally only need to be called once when the renderbuffer
- * is created.  However, we can change pixel formats on the fly if dithering
- * is enabled/disabled.  Therefore, we may call this more often than that.
- */
-void
-xmesa_set_renderbuffer_funcs(struct xmesa_renderbuffer *xrb,
-                             enum pixel_format pixelformat, GLint depth)
-{
-   /* XXX remove this */
-}
-

src/mesa/drivers/x11/xmesaP.h

@@ -209,7 +209,7 @@ struct xmesa_buffer {
    XShmSegmentInfo shminfo;
 #endif
 
-   XMesaImage *rowimage;	/* Used for optimized span writing */
+   //   XMesaImage *rowimage;	/* Used for optimized span writing */
    XMesaPixmap stipple_pixmap;	/* For polygon stippling */
    XMesaGC stipple_gc;		/* For polygon stippling */
 
@@ -355,9 +355,6 @@ xmesa_init_driver_functions( XMesaVisual xmvisual,
 extern void
 xmesa_update_state( struct gl_context *ctx, GLbitfield new_state );
 
-extern void
-xmesa_set_renderbuffer_funcs(struct xmesa_renderbuffer *xrb,
-                             enum pixel_format pixelformat, GLint depth);
 
 extern void
 xmesa_MapRenderbuffer(struct gl_context *ctx,