Implement line stippling.

Also added draw_stage::reset_line_stipple().  There may be a better way
of doing that though.

8 files changed, 50 insertions, 1 deletions

diff --git a/src/mesa/pipe/draw/draw_clip.c b/src/mesa/pipe/draw/draw_clip.c
index b220cc3643f..f8bacf8a818 100644
--- a/src/mesa/pipe/draw/draw_clip.c
+++ b/src/mesa/pipe/draw/draw_clip.c
@@ -433,6 +433,12 @@ static void clip_end( struct draw_stage *stage )
 }
 
 
+static void clip_reset_stipple_counter( struct draw_stage *stage )
+{
+   stage->next->reset_stipple_counter( stage->next );
+}
+
+
 /**
  * Allocate a new clipper stage.
  * \return pointer to new stage object
@@ -449,6 +455,7 @@ struct draw_stage *draw_clip_stage( struct draw_context *draw )
    clipper->stage.line = clip_line;
    clipper->stage.tri = clip_tri;
    clipper->stage.end = clip_end;
+   clipper->stage.reset_stipple_counter = clip_reset_stipple_counter;
 
    clipper->plane = draw->plane;
 
diff --git a/src/mesa/pipe/draw/draw_cull.c b/src/mesa/pipe/draw/draw_cull.c
index e563f9f45f6..8b2ac5ea5f9 100644
--- a/src/mesa/pipe/draw/draw_cull.c
+++ b/src/mesa/pipe/draw/draw_cull.c
@@ -111,6 +111,11 @@ static void cull_end( struct draw_stage *stage )
 }
 
 
+static void cull_reset_stipple_counter( struct draw_stage *stage )
+{
+   stage->next->reset_stipple_counter( stage->next );
+}
+
 /**
  * Create a new polygon culling stage.
  */
@@ -127,6 +132,7 @@ struct draw_stage *draw_cull_stage( struct draw_context *draw )
    cull->stage.line = cull_line;
    cull->stage.tri = cull_tri;
    cull->stage.end = cull_end;
+   cull->stage.reset_stipple_counter = cull_reset_stipple_counter;
 
    return &cull->stage;
 }
diff --git a/src/mesa/pipe/draw/draw_flatshade.c b/src/mesa/pipe/draw/draw_flatshade.c
index 09547865fad..cf5e762079a 100644
--- a/src/mesa/pipe/draw/draw_flatshade.c
+++ b/src/mesa/pipe/draw/draw_flatshade.c
@@ -130,6 +130,12 @@ static void flatshade_end( struct draw_stage *stage )
 }
 
 
+static void flatshade_reset_stipple_counter( struct draw_stage *stage )
+{
+   stage->next->reset_stipple_counter( stage->next );
+}
+
+
 /**
  * Create flatshading drawing stage.
  */
@@ -146,6 +152,7 @@ struct draw_stage *draw_flatshade_stage( struct draw_context *draw )
    flatshade->stage.line = flatshade_line;
    flatshade->stage.tri = flatshade_tri;
    flatshade->stage.end = flatshade_end;
+   flatshade->stage.reset_stipple_counter = flatshade_reset_stipple_counter;
 
    flatshade->lookup = draw->vf_attr_to_slot;
 
diff --git a/src/mesa/pipe/draw/draw_offset.c b/src/mesa/pipe/draw/draw_offset.c
index 1a7f56d0c51..9f665663538 100644
--- a/src/mesa/pipe/draw/draw_offset.c
+++ b/src/mesa/pipe/draw/draw_offset.c
@@ -145,6 +145,12 @@ static void offset_end( struct draw_stage *stage )
 }
 
 
+static void offset_reset_stipple_counter( struct draw_stage *stage )
+{
+   stage->next->reset_stipple_counter( stage->next );
+}
+
+
 /**
  * Create polygon offset drawing stage.
  */
@@ -161,6 +167,7 @@ struct draw_stage *draw_offset_stage( struct draw_context *draw )
    offset->stage.line = offset_line;
    offset->stage.tri = offset_tri;
    offset->stage.end = offset_end;
+   offset->stage.reset_stipple_counter = offset_reset_stipple_counter;
 
    return &offset->stage;
 }
diff --git a/src/mesa/pipe/draw/draw_private.h b/src/mesa/pipe/draw/draw_private.h
index 573b5bf5888..3dfaa0581db 100644
--- a/src/mesa/pipe/draw/draw_private.h
+++ b/src/mesa/pipe/draw/draw_private.h
@@ -98,6 +98,8 @@ struct draw_stage
 		struct prim_header * );
    
    void (*end)( struct draw_stage * );
+
+   void (*reset_stipple_counter)( struct draw_stage * );
 };
 
 
diff --git a/src/mesa/pipe/draw/draw_twoside.c b/src/mesa/pipe/draw/draw_twoside.c
index 9f26335fb65..fdda6b362fa 100644
--- a/src/mesa/pipe/draw/draw_twoside.c
+++ b/src/mesa/pipe/draw/draw_twoside.c
@@ -139,6 +139,12 @@ static void twoside_end( struct draw_stage *stage )
 }
 
 
+static void twoside_reset_stipple_counter( struct draw_stage *stage )
+{
+   stage->next->reset_stipple_counter( stage->next );
+}
+
+
 /**
  * Create twoside pipeline stage.
  */
@@ -155,6 +161,7 @@ struct draw_stage *draw_twoside_stage( struct draw_context *draw )
    twoside->stage.line = twoside_line;
    twoside->stage.tri = twoside_tri;
    twoside->stage.end = twoside_end;
+   twoside->stage.reset_stipple_counter = twoside_reset_stipple_counter;
 
    twoside->lookup = draw->vf_attr_to_slot;
 
diff --git a/src/mesa/pipe/draw/draw_unfilled.c b/src/mesa/pipe/draw/draw_unfilled.c
index f0aee583330..82e8775f59f 100644
--- a/src/mesa/pipe/draw/draw_unfilled.c
+++ b/src/mesa/pipe/draw/draw_unfilled.c
@@ -156,6 +156,12 @@ static void unfilled_end( struct draw_stage *stage )
 }
 
 
+static void unfilled_reset_stipple_counter( struct draw_stage *stage )
+{
+   stage->next->reset_stipple_counter( stage->next );
+}
+
+
 /**
  * Create unfilled triangle stage.
  */
@@ -173,6 +179,7 @@ struct draw_stage *draw_unfilled_stage( struct draw_context *draw )
    unfilled->stage.line = unfilled_line;
    unfilled->stage.tri = unfilled_tri;
    unfilled->stage.end = unfilled_end;
+   unfilled->stage.reset_stipple_counter = unfilled_reset_stipple_counter;
 
    return &unfilled->stage;
 }
diff --git a/src/mesa/pipe/draw/draw_vb.c b/src/mesa/pipe/draw/draw_vb.c
index ac721c589d4..ac126c5baa5 100644
--- a/src/mesa/pipe/draw/draw_vb.c
+++ b/src/mesa/pipe/draw/draw_vb.c
@@ -151,12 +151,14 @@ static void draw_indexed_prim( struct draw_context *draw,
 	 prim.v[0] = get_vertex( draw, elts[i + 0] );
 	 prim.v[1] = get_vertex( draw, elts[i + 1] );
       
+         first->reset_stipple_counter( first );
 	 first->line( first, &prim );
       }
       break;
 
    case GL_LINE_LOOP:  
       if (count >= 2) {
+         first->reset_stipple_counter( first );
 	 for (i = 1; i < count; i++) {
 	    prim.v[0] = get_vertex( draw, elts[i-1] );
 	    prim.v[1] = get_vertex( draw, elts[i] );	    
@@ -178,6 +180,7 @@ static void draw_indexed_prim( struct draw_context *draw,
        * require more complex code here.
        */
       if (count >= 2) {
+         first->reset_stipple_counter( first );
 	 prim.v[0] = 0;
 	 prim.v[1] = get_vertex( draw, elts[0] );
 	 
@@ -313,13 +316,15 @@ static void draw_prim( struct draw_context *draw,
       for (i = 0; i+1 < count; i += 2) {
 	 prim.v[0] = get_vertex( draw, start + i + 0 );
 	 prim.v[1] = get_vertex( draw, start + i + 1 );
-      
+
+         first->reset_stipple_counter( first );
 	 first->line( first, &prim );
       }
       break;
 
    case GL_LINE_LOOP:  
       if (count >= 2) {
+         first->reset_stipple_counter( first );
 	 for (i = 1; i < count; i++) {
 	    prim.v[0] = get_vertex( draw, start + i - 1 );
 	    prim.v[1] = get_vertex( draw, start + i );	    
@@ -334,6 +339,7 @@ static void draw_prim( struct draw_context *draw,
 
    case GL_LINE_STRIP:
       if (count >= 2) {
+         first->reset_stipple_counter( first );
 	 prim.v[0] = 0;
 	 prim.v[1] = get_vertex( draw, start + 0 );