-/* $Id: xm_span.c,v 1.12 2001/05/10 14:21:17 brianp Exp $ */
+/* $Id: xm_span.c,v 1.13 2001/05/10 15:42:43 keithw Exp $ */
/*
* Mesa 3-D graphics library
XMesaGC gc = xmesa->xm_buffer->gc;
const unsigned long pixel = xmesa_color_to_pixel(xmesa, color[RCOMP],
color[GCOMP], color[BCOMP], color[ACOMP], xmesa->pixelformat);
- register GLboolean write_all;
register GLuint i;
XMesaSetForeground( xmesa->display, gc, pixel );
y = FLIP(xmesa->xm_buffer, y);
- write_all = GL_TRUE;
- for (i=0;i<n;i++) {
- if (!mask[i]) {
- write_all = GL_FALSE;
- break;
- }
- }
- if (write_all) {
- XMesaFillRectangle( dpy, buffer, gc, (int) x, (int) y, n, 1 );
- }
- else {
-#if 0
- for (i=0;i<n;i++,x++) {
- if (mask[i]) {
- XMesaDrawPoint( dpy, buffer, gc, (int) x, (int) y );
- }
- }
-#else
- /* This version is usually faster. Contributed by Jeff Epler
- * and cleaned up by Keith Whitwell.
+
+ /* New code contributed by Jeff Epler and cleaned up by Keith
+ * Whitwell.
+ */
+ for (i = 0; i < n; ) {
+ GLuint start = i;
+
+ /* Identify and emit contiguous rendered pixels
*/
- for (i = 0; i < n; ) {
- GLuint start = i;
- /* Identify and emit contiguous rendered pixels
- */
- for( ; i < n && mask[i]; i++)
- /* Nothing */;
- if (start < i)
- XMesaFillRectangle( dpy, buffer, gc,
- (int)(x+start), (int) y,
- (int)(i-start), 1);
- /* Eat up non-rendered pixels
- */
- for(; i < n && !mask[i]; i++)
- /* Nothing */;
- }
-#endif
+ while (i < n && mask[i])
+ i++;
+
+ if (start < i)
+ XMesaFillRectangle( dpy, buffer, gc,
+ (int)(x+start), (int) y,
+ (int)(i-start), 1);
+
+ /* Eat up non-rendered pixels
+ */
+ while (i < n && !mask[i])
+ i++;
}
}
+
static void write_span_mono_index_pixmap( const GLcontext *ctx, GLuint n,
GLint x, GLint y, GLuint colorIndex,
const GLubyte mask[] )
XMesaDisplay *dpy = xmesa->xm_visual->display;
XMesaDrawable buffer = xmesa->xm_buffer->buffer;
XMesaGC gc = xmesa->xm_buffer->gc;
- register GLboolean write_all;
register GLuint i;
XMesaSetForeground( xmesa->display, gc, colorIndex );
y = FLIP(xmesa->xm_buffer, y);
- write_all = GL_TRUE;
- for (i=0;i<n;i++) {
- if (!mask[i]) {
- write_all = GL_FALSE;
- break;
- }
- }
- if (write_all) {
- XMesaFillRectangle( dpy, buffer, gc, (int) x, (int) y, n, 1 );
- }
- else {
- for (i=0;i<n;i++,x++) {
- if (mask[i]) {
- XMesaDrawPoint( dpy, buffer, gc, (int) x, (int) y );
- }
- }
+
+ for (i = 0 ; i < n ;) {
+ GLuint start = i;
+
+ /* Identify and emit contiguous rendered pixels
+ */
+ while (i < n && mask[i])
+ i++;
+
+ if (start < i)
+ XMesaFillRectangle( dpy, buffer, gc,
+ (int)(x+start), (int) y,
+ (int)(i-start), 1);
+
+ /* Eat up non-rendered pixels
+ */
+ while (i < n && !mask[i])
+ i++;
}
}