xm_span.c

Mesa is an open-source implementation of the OpenGL specification - a system for rendering interacti

{
   const GLubyte (*rgb)[3] = (const GLubyte (*)[3]) values;
   const XMesaContext xmesa = XMESA_CONTEXT(ctx);
   GET_XRB(xrb);
   XMesaDisplay *dpy = xmesa->xm_visual->display;
   XMesaDrawable buffer = xrb->drawable;
   XMesaGC gc = XMESA_BUFFER(ctx->DrawBuffer)->gc;
   register GLuint i;
   XDITHER_SETUP(y);
   y = YFLIP(xrb, y);
   if (mask) {
      for (i=0;i<n;i++,x++) {
         if (mask[i]) {
            XMesaSetForeground( dpy, gc, XDITHER(x, rgb[i][RCOMP], rgb[i][GCOMP], rgb[i][BCOMP]) );
            XMesaDrawPoint( dpy, buffer, gc, (int) x, (int) y );
         }
      }
   }
   else {
      /* draw all pixels */
      XMesaImage *rowimg = XMESA_BUFFER(ctx->DrawBuffer)->rowimage;
      for (i=0;i<n;i++) {
         XMesaPutPixel( rowimg, i, 0, XDITHER(x+i, rgb[i][RCOMP], rgb[i][GCOMP], rgb[i][BCOMP]) );
      }
      XMesaPutImage( dpy, buffer, gc, rowimg, 0, 0, x, y, n, 1 );
   }
}


/*
 * Write a span of PF_1BIT pixels to a pixmap.
 */
static void put_row_1BIT_pixmap( PUT_ROW_ARGS )
{
   const GLubyte (*rgba)[4] = (const GLubyte (*)[4]) values;
   const XMesaContext xmesa = XMESA_CONTEXT(ctx);
   GET_XRB(xrb);
   XMesaDisplay *dpy = xmesa->xm_visual->display;
   XMesaDrawable buffer = xrb->drawable;
   XMesaGC gc = XMESA_BUFFER(ctx->DrawBuffer)->gc;
   register GLuint i;
   SETUP_1BIT;
   y = YFLIP(xrb, y);
   if (mask) {
      for (i=0;i<n;i++,x++) {
         if (mask[i]) {
            XMesaSetForeground( dpy, gc,
                            DITHER_1BIT( x, y, rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP] ) );
            XMesaDrawPoint( dpy, buffer, gc, (int) x, (int) y );
         }
      }
   }
   else {
      /* draw all pixels */
      XMesaImage *rowimg = XMESA_BUFFER(ctx->DrawBuffer)->rowimage;
      for (i=0;i<n;i++) {
         XMesaPutPixel( rowimg, i, 0,
                    DITHER_1BIT( x+i, y, rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP] ) );
      }
      XMesaPutImage( dpy, buffer, gc, rowimg, 0, 0, x, y, n, 1 );
   }
}


/*
 * Write a span of PF_1BIT pixels to a pixmap (no alpha).
 */
static void put_row_rgb_1BIT_pixmap( RGB_SPAN_ARGS )
{
   const GLubyte (*rgb)[3] = (const GLubyte (*)[3]) values;
   const XMesaContext xmesa = XMESA_CONTEXT(ctx);
   GET_XRB(xrb);
   XMesaDisplay *dpy = xmesa->xm_visual->display;
   XMesaDrawable buffer = xrb->drawable;
   XMesaGC gc = XMESA_BUFFER(ctx->DrawBuffer)->gc;
   register GLuint i;
   SETUP_1BIT;
   y = YFLIP(xrb, y);
   if (mask) {
      for (i=0;i<n;i++,x++) {
         if (mask[i]) {
            XMesaSetForeground( dpy, gc,
              DITHER_1BIT(x, y, rgb[i][RCOMP], rgb[i][GCOMP], rgb[i][BCOMP]) );
            XMesaDrawPoint( dpy, buffer, gc, (int) x, (int) y );
         }
      }
   }
   else {
      /* draw all pixels */
      XMesaImage *rowimg = XMESA_BUFFER(ctx->DrawBuffer)->rowimage;
      for (i=0;i<n;i++) {
         XMesaPutPixel( rowimg, i, 0,
          DITHER_1BIT(x+i, y, rgb[i][RCOMP], rgb[i][GCOMP], rgb[i][BCOMP]) );
      }
      XMesaPutImage( dpy, buffer, gc, rowimg, 0, 0, x, y, n, 1 );
   }
}


/*
 * Write a span of PF_HPCR pixels to a pixmap.
 */
static void put_row_HPCR_pixmap( PUT_ROW_ARGS )
{
   const GLubyte (*rgba)[4] = (const GLubyte (*)[4]) values;
   const XMesaContext xmesa = XMESA_CONTEXT(ctx);
   GET_XRB(xrb);
   XMesaDisplay *dpy = xmesa->xm_visual->display;
   XMesaDrawable buffer = xrb->drawable;
   XMesaGC gc = XMESA_BUFFER(ctx->DrawBuffer)->gc;
   register GLuint i;
   y = YFLIP(xrb, y);
   if (mask) {
      for (i=0;i<n;i++,x++) {
         if (mask[i]) {
            XMesaSetForeground( dpy, gc,
                            DITHER_HPCR( x, y, rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP] ) );
            XMesaDrawPoint( dpy, buffer, gc, (int) x, (int) y );
         }
      }
   }
   else {
      XMesaImage *rowimg = XMESA_BUFFER(ctx->DrawBuffer)->rowimage;
      register GLubyte *ptr = (GLubyte *) XMESA_BUFFER(ctx->DrawBuffer)->rowimage->data;
      for (i=0;i<n;i++) {
         ptr[i] = DITHER_HPCR( (x+i), y, rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP] );
      }
      XMesaPutImage( dpy, buffer, gc, rowimg, 0, 0, x, y, n, 1 );
   }
}


/*
 * Write a span of PF_HPCR pixels to a pixmap (no alpha).
 */
static void put_row_rgb_HPCR_pixmap( RGB_SPAN_ARGS )
{
   const GLubyte (*rgb)[3] = (const GLubyte (*)[3]) values;
   const XMesaContext xmesa = XMESA_CONTEXT(ctx);
   GET_XRB(xrb);
   XMesaDisplay *dpy = xmesa->xm_visual->display;
   XMesaDrawable buffer = xrb->drawable;
   XMesaGC gc = XMESA_BUFFER(ctx->DrawBuffer)->gc;
   register GLuint i;
   y = YFLIP(xrb, y);
   if (mask) {
      for (i=0;i<n;i++,x++) {
         if (mask[i]) {
            XMesaSetForeground( dpy, gc,
              DITHER_HPCR(x, y, rgb[i][RCOMP], rgb[i][GCOMP], rgb[i][BCOMP]) );
            XMesaDrawPoint( dpy, buffer, gc, (int) x, (int) y );
         }
      }
   }
   else {
      XMesaImage *rowimg = XMESA_BUFFER(ctx->DrawBuffer)->rowimage;
      register GLubyte *ptr = (GLubyte *) XMESA_BUFFER(ctx->DrawBuffer)->rowimage->data;
      for (i=0;i<n;i++) {
         ptr[i] = DITHER_HPCR( (x+i), y, rgb[i][RCOMP], rgb[i][GCOMP], rgb[i][BCOMP] );
      }
      XMesaPutImage( dpy, buffer, gc, rowimg, 0, 0, x, y, n, 1 );
   }
}

/*
 * Write a span of PF_LOOKUP pixels to a pixmap.
 */
static void put_row_LOOKUP_pixmap( PUT_ROW_ARGS )
{
   const GLubyte (*rgba)[4] = (const GLubyte (*)[4]) values;
   const XMesaContext xmesa = XMESA_CONTEXT(ctx);
   GET_XRB(xrb);
   XMesaDisplay *dpy = xmesa->xm_visual->display;
   XMesaDrawable buffer = xrb->drawable;
   XMesaGC gc = XMESA_BUFFER(ctx->DrawBuffer)->gc;
   register GLuint i;
   LOOKUP_SETUP;
   y = YFLIP(xrb, y);
   if (mask) {
      for (i=0;i<n;i++,x++) {
         if (mask[i]) {
            XMesaSetForeground( dpy, gc, LOOKUP( rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP] ) );
            XMesaDrawPoint( dpy, buffer, gc, (int) x, (int) y );
         }
      }
   }
   else {
      XMesaImage *rowimg = XMESA_BUFFER(ctx->DrawBuffer)->rowimage;
      for (i=0;i<n;i++) {
         XMesaPutPixel( rowimg, i, 0, LOOKUP(rgba[i][RCOMP],rgba[i][GCOMP],rgba[i][BCOMP]) );
      }
      XMesaPutImage( dpy, buffer, gc, rowimg, 0, 0, x, y, n, 1 );
   }
}


/*
 * Write a span of PF_LOOKUP pixels to a pixmap (no alpha).
 */
static void put_row_rgb_LOOKUP_pixmap( RGB_SPAN_ARGS )
{
   const GLubyte (*rgb)[3] = (const GLubyte (*)[3]) values;
   const XMesaContext xmesa = XMESA_CONTEXT(ctx);
   GET_XRB(xrb);
   XMesaDisplay *dpy = xmesa->xm_visual->display;
   XMesaDrawable buffer = xrb->drawable;
   XMesaGC gc = XMESA_BUFFER(ctx->DrawBuffer)->gc;
   register GLuint i;
   LOOKUP_SETUP;
   y = YFLIP(xrb, y);
   if (mask) {
      for (i=0;i<n;i++,x++) {
         if (mask[i]) {
            XMesaSetForeground( dpy, gc, LOOKUP( rgb[i][RCOMP], rgb[i][GCOMP], rgb[i][BCOMP] ) );
            XMesaDrawPoint( dpy, buffer, gc, (int) x, (int) y );
         }
      }
   }
   else {
      XMesaImage *rowimg = XMESA_BUFFER(ctx->DrawBuffer)->rowimage;
      for (i=0;i<n;i++) {
         XMesaPutPixel( rowimg, i, 0, LOOKUP(rgb[i][RCOMP],rgb[i][GCOMP],rgb[i][BCOMP]) );
      }
      XMesaPutImage( dpy, buffer, gc, rowimg, 0, 0, x, y, n, 1 );
   }
}


/*
 * Write a span of PF_GRAYSCALE pixels to a pixmap.
 */
static void put_row_GRAYSCALE_pixmap( PUT_ROW_ARGS )
{
   const GLubyte (*rgba)[4] = (const GLubyte (*)[4]) values;
   const XMesaContext xmesa = XMESA_CONTEXT(ctx);
   GET_XRB(xrb);
   XMesaDisplay *dpy = xmesa->xm_visual->display;
   XMesaDrawable buffer = xrb->drawable;
   XMesaGC gc = XMESA_BUFFER(ctx->DrawBuffer)->gc;
   register GLuint i;
   y = YFLIP(xrb, y);
   if (mask) {
      for (i=0;i<n;i++,x++) {
         if (mask[i]) {
            XMesaSetForeground( dpy, gc, GRAY_RGB( rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP] ) );
            XMesaDrawPoint( dpy, buffer, gc, (int) x, (int) y );
         }
      }
   }
   else {
      XMesaImage *rowimg = XMESA_BUFFER(ctx->DrawBuffer)->rowimage;
      for (i=0;i<n;i++) {
         XMesaPutPixel( rowimg, i, 0, GRAY_RGB(rgba[i][RCOMP],rgba[i][GCOMP],rgba[i][BCOMP]) );
      }
      XMesaPutImage( dpy, buffer, gc, rowimg, 0, 0, x, y, n, 1 );
   }
}


/*
 * Write a span of PF_GRAYSCALE pixels to a pixmap (no alpha).
 */
static void put_row_rgb_GRAYSCALE_pixmap( RGB_SPAN_ARGS )
{
   const GLubyte (*rgb)[3] = (const GLubyte (*)[3]) values;
   const XMesaContext xmesa = XMESA_CONTEXT(ctx);
   GET_XRB(xrb);
   XMesaDisplay *dpy = xmesa->xm_visual->display;
   XMesaDrawable buffer = xrb->drawable;
   XMesaGC gc = XMESA_BUFFER(ctx->DrawBuffer)->gc;
   register GLuint i;
   y = YFLIP(xrb, y);
   if (mask) {
      for (i=0;i<n;i++,x++) {
         if (mask[i]) {
            XMesaSetForeground( dpy, gc, GRAY_RGB( rgb[i][RCOMP], rgb[i][GCOMP], rgb[i][BCOMP] ) );
            XMesaDrawPoint( dpy, buffer, gc, (int) x, (int) y );
         }
      }
   }
   else {
      XMesaImage *rowimg = XMESA_BUFFER(ctx->DrawBuffer)->rowimage;
      for (i=0;i<n;i++) {
         XMesaPutPixel( rowimg, i, 0, GRAY_RGB(rgb[i][RCOMP],rgb[i][GCOMP],rgb[i][BCOMP]) );
      }
      XMesaPutImage( dpy, buffer, gc, rowimg, 0, 0, x, y, n, 1 );
   }
}

/*
 * Write a span of PF_TRUECOLOR pixels to an XImage.
 */
static void put_row_TRUECOLOR_ximage( PUT_ROW_ARGS )
{
   const GLubyte (*rgba)[4] = (const GLubyte (*)[4]) values;
   const XMesaContext xmesa = XMESA_CONTEXT(ctx);
   GET_XRB(xrb);
   XMesaImage *img = xrb->ximage;
   register GLuint i;
   y = YFLIP(xrb, y);
   if (mask) {
      for (i=0;i<n;i++,x++) {
         if (mask[i]) {
            unsigned long p;
            PACK_TRUECOLOR( p, rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP] );
            XMesaPutPixel( img, x, y, p );
         }
      }
   }
   else {
      /* draw all pixels */
      for (i=0;i<n;i++,x++) {
         unsigned long p;
         PACK_TRUECOLOR( p, rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP] );
         XMesaPutPixel( img, x, y, p );
      }
   }
}


/*
 * Write a span of PF_TRUECOLOR pixels to an XImage (no alpha).
 */
static void put_row_rgb_TRUECOLOR_ximage( RGB_SPAN_ARGS )
{
   const GLubyte (*rgb)[3] = (const GLubyte (*)[3]) values;
   const XMesaContext xmesa = XMESA_CONTEXT(ctx);
   GET_XRB(xrb);
   XMesaImage *img = xrb->ximage;
   register GLuint i;
   y = YFLIP(xrb, y);
   if (mask) {
      for (i=0;i<n;i++,x++) {
         if (mask[i]) {
            unsigned long p;
            PACK_TRUECOLOR( p, rgb[i][RCOMP], rgb[i][GCOMP], rgb[i][BCOMP] );
            XMesaPutPixel( img, x, y, p );
         }
      }
   }
   else {
      /* draw all pixels */
      for (i=0;i<n;i++,x++) {
         unsigned long p;
         PACK_TRUECOLOR( p, rgb[i][RCOMP], rgb[i][GCOMP], rgb[i][BCOMP] );
         XMesaPutPixel( img, x, y, p );
      }
   }
}


/*
 * Write a span of PF_TRUEDITHER pixels to an XImage.
 */
static void put_row_TRUEDITHER_ximage( PUT_ROW_ARGS )
{
   const GLubyte (*rgba)[4] = (const GLubyte (*)[4]) values;
   const XMesaContext xmesa = XMESA_CONTEXT(ctx);
   GET_XRB(xrb);
   XMesaImage *img = xrb->ximage;
   register GLuint i;
   y = YFLIP(xrb, y);
   if (mask) {
      for (i=0;i<n;i++,x++) {
         if (mask[i]) {
            unsigned long p;
            PACK_TRUEDITHER(p, x, y, rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP]);
            XMesaPutPixel( img, x, y, p );
         }
      }
   }
   else {
      /* draw all pixels */
      for (i=0;i<n;i++,x++) {
         unsigned long p;
         PACK_TRUEDITHER(p, x, y, rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP]);
         XMesaPutPixel( img, x, y, p );
      }
   }
}


/*
 * Write a span of PF_TRUEDITHER pixels to an XImage (no alpha).
 */
static void put_row_rgb_TRUEDITHER_ximage( RGB_SPAN_ARGS )
{
   const GLubyte (*rgb)[3] = (const GLubyte (*)[3]) values;
   const XMesaContext xmesa = XMESA_CONTEXT(ctx);
   GET_XRB(xrb);
   XMesaImage *img = xrb->ximage;
   register GLuint i;
   y = YFLIP(xrb, y);
   if (mask) {
      for (i=0;i<n;i++,x++) {
         if (mask[i]) {
            unsigned long p;
            PACK_TRUEDITHER(p, x, y, rgb[i][RCOMP], rgb[i][GCOMP], rgb[i][BCOMP]);
            XMesaPutPixel( img, x, y, p );
         }
      }
   }
   else {
      /* draw all pixels */
      for (i=0;i<n;i++,x++) {
         unsigned long p;
         PACK_TRUEDITHER(p, x, y, rgb[i][RCOMP], rgb[i][GCOMP], rgb[i][BCOMP]);
         XMesaPutPixel( img, x, y, p );
      }
   }
}


/*
 * Write a span of PF_8A8B8G8R-format pixels to an ximage.
 */
static void put_row_8A8B8G8R_ximage( PUT_ROW_ARGS )
{
   const GLubyte (*rgba)[4] = (const GLubyte (*)[4]) values;
   GET_XRB(xrb);
   register GLuint i;
   register GLuint *ptr = PIXEL_ADDR4(xrb, x, y);
   (void) ctx;
   if (mask) {
      for (i=0;i<n;i++) {
         if (mask[i]) {
            ptr[i] = PACK_8A8B8G8R( rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP], rgba[i][ACOMP] );
         }
      }
   }
   else {
      /* draw all pixels */
      for (i=0;i<n;i++) {
         ptr[i] = PACK_8A8B8G8R( rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP], rgba[i][ACOMP] );
      }
   }
}


/*
 * Write a span of PF_8A8B8G8R-format pixels to an ximage (no alpha).
 */
static void put_row_rgb_8A8B8G8R_ximage( RGB_SPAN_ARGS )
{
   const GLubyte (*rgb)[3] = (const GLubyte (*)[3]) values;
   GET_XRB(xrb);