177 lines
3.2 KiB
C
177 lines
3.2 KiB
C
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/* $XFree86: xc/lib/GL/mesa/src/drv/common/depthtmp.h,v 1.5 2001/03/21 16:14:20 dawes Exp $ */
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#ifndef DBG
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#define DBG 0
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#endif
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#ifndef HAVE_HW_DEPTH_SPANS
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#define HAVE_HW_DEPTH_SPANS 0
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#endif
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#ifndef HAVE_HW_DEPTH_PIXELS
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#define HAVE_HW_DEPTH_PIXELS 0
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#endif
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#ifndef HW_READ_LOCK
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#define HW_READ_LOCK() HW_LOCK()
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#endif
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#ifndef HW_READ_UNLOCK
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#define HW_READ_UNLOCK() HW_UNLOCK()
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#endif
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static void TAG(WriteDepthSpan)( GLcontext *ctx,
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GLuint n, GLint x, GLint y,
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const GLdepth *depth,
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const GLubyte mask[] )
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{
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HW_WRITE_LOCK()
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{
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GLint x1;
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GLint n1;
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LOCAL_DEPTH_VARS;
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y = Y_FLIP( y );
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#if HAVE_HW_DEPTH_SPANS
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(void) x1; (void) n1;
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if ( DBG ) fprintf( stderr, "WriteDepthSpan 0..%d (x1 %d)\n",
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(int)n, (int)x );
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WRITE_DEPTH_SPAN();
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#else
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HW_CLIPLOOP()
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{
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GLint i = 0;
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CLIPSPAN( x, y, n, x1, n1, i );
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if ( DBG ) fprintf( stderr, "WriteDepthSpan %d..%d (x1 %d)\n",
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(int)i, (int)n1, (int)x1 );
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if ( mask ) {
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for ( ; i < n1 ; i++, x1++ ) {
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if ( mask[i] ) WRITE_DEPTH( x1, y, depth[i] );
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}
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} else {
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for ( ; i < n1 ; i++, x1++ ) {
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WRITE_DEPTH( x1, y, depth[i] );
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}
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}
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}
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HW_ENDCLIPLOOP();
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#endif
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}
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HW_WRITE_UNLOCK();
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}
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static void TAG(WriteDepthPixels)( GLcontext *ctx,
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GLuint n,
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const GLint x[],
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const GLint y[],
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const GLdepth depth[],
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const GLubyte mask[] )
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{
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HW_WRITE_LOCK()
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{
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GLint i;
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LOCAL_DEPTH_VARS;
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if ( DBG ) fprintf( stderr, "WriteDepthPixels\n" );
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#if HAVE_HW_DEPTH_PIXELS
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(void) i;
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WRITE_DEPTH_PIXELS();
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#else
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HW_CLIPLOOP()
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{
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for ( i = 0 ; i < n ; i++ ) {
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if ( mask[i] ) {
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const int fy = Y_FLIP( y[i] );
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if ( CLIPPIXEL( x[i], fy ) )
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WRITE_DEPTH( x[i], fy, depth[i] );
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}
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}
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}
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HW_ENDCLIPLOOP();
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#endif
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}
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HW_WRITE_UNLOCK();
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}
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/* Read depth spans and pixels
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*/
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static void TAG(ReadDepthSpan)( GLcontext *ctx,
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GLuint n, GLint x, GLint y,
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GLdepth depth[] )
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{
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HW_READ_LOCK()
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{
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GLint x1, n1;
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LOCAL_DEPTH_VARS;
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y = Y_FLIP( y );
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if ( DBG ) fprintf( stderr, "ReadDepthSpan\n" );
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#if HAVE_HW_DEPTH_SPANS
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(void) x1; (void) n1;
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READ_DEPTH_SPAN();
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#else
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HW_CLIPLOOP()
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{
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GLint i = 0;
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CLIPSPAN( x, y, n, x1, n1, i );
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for ( ; i < n1 ; i++ )
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READ_DEPTH( depth[i], (x1+i), y );
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}
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HW_ENDCLIPLOOP();
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#endif
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}
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HW_READ_UNLOCK();
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}
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static void TAG(ReadDepthPixels)( GLcontext *ctx, GLuint n,
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const GLint x[], const GLint y[],
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GLdepth depth[] )
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{
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HW_READ_LOCK()
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{
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GLint i;
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LOCAL_DEPTH_VARS;
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if ( DBG ) fprintf( stderr, "ReadDepthPixels\n" );
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#if HAVE_HW_DEPTH_PIXELS
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(void) i;
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READ_DEPTH_PIXELS();
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#else
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HW_CLIPLOOP()
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{
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for ( i = 0 ; i < n ;i++ ) {
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int fy = Y_FLIP( y[i] );
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if ( CLIPPIXEL( x[i], fy ) )
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READ_DEPTH( depth[i], x[i], fy );
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}
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}
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HW_ENDCLIPLOOP();
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#endif
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}
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HW_READ_UNLOCK();
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}
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#if HAVE_HW_DEPTH_SPANS
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#undef WRITE_DEPTH_SPAN
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#undef WRITE_DEPTH_PIXELS
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#undef READ_DEPTH_SPAN
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#undef READ_DEPTH_PIXELS
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#else
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#undef WRITE_DEPTH
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#undef READ_DEPTH
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#endif
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#undef TAG
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