xm_span.c

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

         PACK_TRUEDITHER( p0, x, y, rgb[i][RCOMP], rgb[i][GCOMP], rgb[i][BCOMP] );
         PACK_TRUEDITHER( p1, x+1, y, rgb[i+1][RCOMP], rgb[i+1][GCOMP], rgb[i+1][BCOMP] );
         *ptr32++ = (p1 << 16) | p0;
      }
      if (extraPixel) {
         PACK_TRUEDITHER( ptr[n], x+n, y, rgb[n][RCOMP], rgb[n][GCOMP], rgb[n][BCOMP]);
      }
#else
      for (i=0;i<n;i++,x++) {
         PACK_TRUEDITHER( ptr[i], x, y, rgb[i][RCOMP], rgb[i][GCOMP], rgb[i][BCOMP] );
      }
#endif
   }
}


/*
 * Write a span of PF_DITHER pixels to an XImage.
 */
static void put_row_DITHER_ximage( PUT_ROW_ARGS )
{
   const GLubyte (*rgba)[4] = (const GLubyte (*)[4]) values;
   GET_XRB(xrb);
   XMesaImage *img = xrb->ximage;
   register GLuint i;
   int yy = YFLIP(xrb, y);
   XDITHER_SETUP(yy);
   if (mask) {
      for (i=0;i<n;i++,x++) {
         if (mask[i]) {
            XMesaPutPixel( img, x, yy, XDITHER( x, rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP] ) );
         }
      }
   }
   else {
      /* draw all pixels */
      for (i=0;i<n;i++,x++) {
         XMesaPutPixel( img, x, yy, XDITHER( x, rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP] ) );
      }
   }
}


/*
 * Write a span of PF_DITHER pixels to an XImage (no alpha).
 */
static void put_row_rgb_DITHER_ximage( RGB_SPAN_ARGS )
{
   const GLubyte (*rgb)[3] = (const GLubyte (*)[3]) values;
   GET_XRB(xrb);
   XMesaImage *img = xrb->ximage;
   register GLuint i;
   int yy = YFLIP(xrb, y);
   XDITHER_SETUP(yy);
   if (mask) {
      for (i=0;i<n;i++,x++) {
         if (mask[i]) {
            XMesaPutPixel( img, x, yy, XDITHER( x, rgb[i][RCOMP], rgb[i][GCOMP], rgb[i][BCOMP] ) );
         }
      }
   }
   else {
      /* draw all pixels */
      for (i=0;i<n;i++,x++) {
         XMesaPutPixel( img, x, yy, XDITHER( x, rgb[i][RCOMP], rgb[i][GCOMP], rgb[i][BCOMP] ) );
      }
   }
}



/*
 * Write a span of 8-bit PF_DITHER pixels to an XImage.
 */
static void put_row_DITHER8_ximage( PUT_ROW_ARGS )
{
   const GLubyte (*rgba)[4] = (const GLubyte (*)[4]) values;
   GET_XRB(xrb);
   register GLuint i;
   register GLubyte *ptr = PIXEL_ADDR1(xrb, x, y);
   XDITHER_SETUP(y);
   if (mask) {
      for (i=0;i<n;i++,x++) {
         if (mask[i]) {
            ptr[i] = (GLubyte) XDITHER( x, rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP] );
         }
      }
   }
   else {
      for (i=0;i<n;i++,x++) {
         ptr[i] = (GLubyte) XDITHER( x, rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP] );
      }
   }
}


static void put_row_rgb_DITHER8_ximage( RGB_SPAN_ARGS )
{
   const GLubyte (*rgb)[3] = (const GLubyte (*)[3]) values;
   GET_XRB(xrb);
   register GLuint i;
   register GLubyte *ptr = PIXEL_ADDR1(xrb, x, y);
   XDITHER_SETUP(y);
   if (mask) {
      for (i=0;i<n;i++,x++) {
         if (mask[i]) {
            ptr[i] = (GLubyte) XDITHER( x, rgb[i][0], rgb[i][1], rgb[i][2] );
         }
      }
   }
   else {
      const GLubyte *data = (GLubyte *) rgb;
      for (i=0;i<n;i++,x++) {
         /*ptr[i] = XDITHER( x, rgb[i][0], rgb[i][1], rgb[i][2] );*/
         ptr[i] = (GLubyte) XDITHER( x, data[i+i+i], data[i+i+i+1], data[i+i+i+2] );
      }
   }
}



/*
 * Write a span of PF_1BIT pixels to an XImage.
 */
static void put_row_1BIT_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;
   SETUP_1BIT;
   y = YFLIP(xrb, y);
   if (mask) {
      for (i=0;i<n;i++,x++) {
         if (mask[i]) {
            XMesaPutPixel(img, x, y, DITHER_1BIT(x, y, rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP]));
         }
      }
   }
   else {
      for (i=0;i<n;i++,x++) {
         XMesaPutPixel( img, x, y, DITHER_1BIT(x, y, rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP]) );
      }
   }
}


/*
 * Write a span of PF_1BIT pixels to an XImage (no alpha).
 */
static void put_row_rgb_1BIT_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;
   SETUP_1BIT;
   y = YFLIP(xrb, y);
   if (mask) {
      for (i=0;i<n;i++,x++) {
         if (mask[i]) {
            XMesaPutPixel(img, x, y, DITHER_1BIT(x, y, rgb[i][RCOMP], rgb[i][GCOMP], rgb[i][BCOMP]));
         }
      }
   }
   else {
      for (i=0;i<n;i++,x++) {
         XMesaPutPixel( img, x, y, DITHER_1BIT(x, y, rgb[i][RCOMP], rgb[i][GCOMP], rgb[i][BCOMP]) );
      }
   }
}


/*
 * Write a span of PF_HPCR pixels to an XImage.
 */
static void put_row_HPCR_ximage( PUT_ROW_ARGS )
{
   const GLubyte (*rgba)[4] = (const GLubyte (*)[4]) values;
   GET_XRB(xrb);
   const XMesaContext xmesa = XMESA_CONTEXT(ctx);
   register GLuint i;
   register GLubyte *ptr = PIXEL_ADDR1(xrb, x, y);
   if (mask) {
      for (i=0;i<n;i++,x++) {
         if (mask[i]) {
            ptr[i] = DITHER_HPCR( x, y, rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP] );
         }
      }
   }
   else {
      /* draw all pixels */
      for (i=0;i<n;i++,x++) {
         ptr[i] = DITHER_HPCR( x, y, rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP] );
      }
   }
}


/*
 * Write a span of PF_HPCR pixels to an XImage (no alpha).
 */
static void put_row_rgb_HPCR_ximage( RGB_SPAN_ARGS )
{
   const GLubyte (*rgb)[3] = (const GLubyte (*)[3]) values;
   GET_XRB(xrb);
   const XMesaContext xmesa = XMESA_CONTEXT(ctx);
   register GLuint i;
   register GLubyte *ptr = PIXEL_ADDR1(xrb, x, y);
   if (mask) {
      for (i=0;i<n;i++,x++) {
         if (mask[i]) {
            ptr[i] = DITHER_HPCR( x, y, rgb[i][RCOMP], rgb[i][GCOMP], rgb[i][BCOMP] );
         }
      }
   }
   else {
      /* draw all pixels */
      for (i=0;i<n;i++,x++) {
         ptr[i] = DITHER_HPCR( x, y, rgb[i][RCOMP], rgb[i][GCOMP], rgb[i][BCOMP] );
      }
   }
}


/*
 * Write a span of PF_LOOKUP pixels to an XImage.
 */
static void put_row_LOOKUP_ximage( PUT_ROW_ARGS )
{
   const GLubyte (*rgba)[4] = (const GLubyte (*)[4]) values;
   GET_XRB(xrb);
   XMesaImage *img = xrb->ximage;
   register GLuint i;
   LOOKUP_SETUP;
   y = YFLIP(xrb, y);
   if (mask) {
      for (i=0;i<n;i++,x++) {
         if (mask[i]) {
            XMesaPutPixel( img, x, y, LOOKUP( rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP] ) );
         }
      }
   }
   else {
      /* draw all pixels */
      for (i=0;i<n;i++,x++) {
         XMesaPutPixel( img, x, y, LOOKUP( rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP] ) );
      }
   }
}


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


/*
 * Write a span of 8-bit PF_LOOKUP pixels to an XImage.
 */
static void put_row_LOOKUP8_ximage( PUT_ROW_ARGS )
{
   const GLubyte (*rgba)[4] = (const GLubyte (*)[4]) values;
   GET_XRB(xrb);
   register GLuint i;
   register GLubyte *ptr = PIXEL_ADDR1(xrb, x, y);
   LOOKUP_SETUP;
   if (mask) {
      for (i=0;i<n;i++,x++) {
         if (mask[i]) {
            ptr[i] = (GLubyte) LOOKUP( rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP] );
         }
      }
   }
   else {
      /* draw all pixels */
      for (i=0;i<n;i++,x++) {
         ptr[i] = (GLubyte) LOOKUP( rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP] );
      }
   }
}


static void put_row_rgb_LOOKUP8_ximage( RGB_SPAN_ARGS )
{
   const GLubyte (*rgb)[3] = (const GLubyte (*)[3]) values;
   GET_XRB(xrb);
   register GLuint i;
   register GLubyte *ptr = PIXEL_ADDR1(xrb, x, y);
   LOOKUP_SETUP;
   if (mask) {
      for (i=0;i<n;i++,x++) {
         if (mask[i]) {
            ptr[i] = (GLubyte) LOOKUP( rgb[i][0], rgb[i][1], rgb[i][2] );
         }
      }
   }
   else {
      /* draw all pixels */
      const GLubyte *data = (GLubyte *) rgb;
      for (i=0;i<n;i++,x++) {
         /*ptr[i] = LOOKUP( rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP] );*/
         ptr[i] = (GLubyte) LOOKUP( data[i+i+i], data[i+i+i+1], data[i+i+i+2] );
      }
   }
}


/*
 * Write a span of PF_GRAYSCALE pixels to an XImage.
 */
static void put_row_GRAYSCALE_ximage( PUT_ROW_ARGS )
{
   const GLubyte (*rgba)[4] = (const GLubyte (*)[4]) values;
   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]) {
            XMesaPutPixel( img, x, y, GRAY_RGB( rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP] ) );
         }
      }
   }
   else {
      /* draw all pixels */
      for (i=0;i<n;i++,x++) {
         XMesaPutPixel( img, x, y, GRAY_RGB( rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP] ) );
      }
   }
}


/*
 * Write a span of PF_GRAYSCALE pixels to an XImage (no alpha).
 */
static void put_row_rgb_GRAYSCALE_ximage( RGB_SPAN_ARGS )
{
   const GLubyte (*rgb)[3] = (const GLubyte (*)[3]) values;
   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]) {
            XMesaPutPixel( img, x, y, GRAY_RGB( rgb[i][RCOMP], rgb[i][GCOMP], rgb[i][BCOMP] ) );
         }
      }
   }
   else {
      /* draw all pixels */
      for (i=0;i<n;i++,x++) {
         XMesaPutPixel( img, x, y, GRAY_RGB( rgb[i][RCOMP], rgb[i][GCOMP], rgb[i][BCOMP] ) );
      }
   }
}


/*
 * Write a span of 8-bit PF_GRAYSCALE pixels to an XImage.
 */
static void put_row_GRAYSCALE8_ximage( PUT_ROW_ARGS )
{
   const GLubyte (*rgba)[4] = (const GLubyte (*)[4]) values;
   GET_XRB(xrb);
   register GLuint i;
   register GLubyte *ptr = PIXEL_ADDR1(xrb, x, y);
   if (mask) {
      for (i=0;i<n;i++) {
         if (mask[i]) {
            ptr[i] = (GLubyte) GRAY_RGB( rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP] );
         }
      }
   }
   else {
      /* draw all pixels */
      for (i=0;i<n;i++) {
         ptr[i] = (GLubyte) GRAY_RGB( rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP] );
      }
   }
}


/*
 * Write a span of 8-bit PF_GRAYSCALE pixels to an XImage (no alpha).
 */
static void put_row_rgb_GRAYSCALE8_ximage( RGB_SPAN_ARGS )
{
   const GLubyte (*rgb)[3] = (const GLubyte (*)[3]) values;
   GET_XRB(xrb);
   register GLuint i;
   register GLubyte *ptr = PIXEL_ADDR1(xrb, x, y);
   if (mask) {
      for (i=0;i<n;i++) {
         if (mask[i]) {
            ptr[i] = (GLubyte) GRAY_RGB( rgb[i][RCOMP], rgb[i][GCOMP], rgb[i][BCOMP] );
         }
      }
   }
   else {
      /* draw all pixels */
      for (i=0;i<n;i++) {
         ptr[i] = (GLubyte) GRAY_RGB( rgb[i][RCOMP], rgb[i][GCOMP], rgb[i][BCOMP] );
      }
   }
}




/**********************************************************************/
/*** Write COLOR PIXEL functions                                    ***/
/**********************************************************************/


#define PUT_VALUES_ARGS \
	GLcontext *ctx, struct gl_renderbuffer *rb,	\
	GL