draw: Pass-through pipe_buffer::max_index to translate.

max_index must be observed to prevent crashes due to bad index data.

I've been using this patch for some time without regressions.

Some places, where we use internal vertex buffer, it is not entirely
clear what max_index should be, so passing just ~0 to avoid regressions
for now.

7 files changed, 34 insertions, 19 deletions

diff --git a/src/gallium/auxiliary/draw/draw_pipe_vbuf.c b/src/gallium/auxiliary/draw/draw_pipe_vbuf.c
index ee2b811603..abbf6247ab 100644
--- a/src/gallium/auxiliary/draw/draw_pipe_vbuf.c
+++ b/src/gallium/auxiliary/draw/draw_pipe_vbuf.c
@@ -137,7 +137,7 @@ emit_vertex( struct vbuf_stage *vbuf,
        */
       /* Note: we really do want data[0] here, not data[pos]: 
        */
-      vbuf->translate->set_buffer(vbuf->translate, 0, vertex->data[0], 0);
+      vbuf->translate->set_buffer(vbuf->translate, 0, vertex->data[0], 0, ~0);
       vbuf->translate->run(vbuf->translate, 0, 1, 0, vbuf->vertex_ptr);
 
       if (0) draw_dump_emitted_vertex(vbuf->vinfo, (uint8_t *)vbuf->vertex_ptr);
@@ -271,7 +271,7 @@ vbuf_start_prim( struct vbuf_stage *vbuf, uint prim )
       translate_key_sanitize(&hw_key);
       vbuf->translate = translate_cache_find(vbuf->cache, &hw_key);
 
-      vbuf->translate->set_buffer(vbuf->translate, 1, &vbuf->point_size, 0);
+      vbuf->translate->set_buffer(vbuf->translate, 1, &vbuf->point_size, 0, ~0);
    }
 
    vbuf->point_size = vbuf->stage.draw->rasterizer->point_size;
diff --git a/src/gallium/auxiliary/draw/draw_pt_emit.c b/src/gallium/auxiliary/draw/draw_pt_emit.c
index a7917f54b0..ad48fa39a4 100644
--- a/src/gallium/auxiliary/draw/draw_pt_emit.c
+++ b/src/gallium/auxiliary/draw/draw_pt_emit.c
@@ -171,12 +171,14 @@ void draw_pt_emit( struct pt_emit *emit,
    translate->set_buffer(translate, 
 			 0, 
 			 vertex_data,
-			 stride );
+			 stride,
+			 ~0);
 
    translate->set_buffer(translate, 
 			 1, 
 			 &draw->rasterizer->point_size,
-			 0);
+			 0,
+			 ~0);
 
    translate->run( translate,
 		   0, 
@@ -232,11 +234,11 @@ void draw_pt_emit_linear(struct pt_emit *emit,
       goto fail;
 
    translate->set_buffer(translate, 0,
-			 vertex_data, stride);
+			 vertex_data, stride, count - 1);
 
    translate->set_buffer(translate, 1,
 			 &draw->rasterizer->point_size,
-			 0);
+			 0, ~0);
 
    translate->run(translate,
                   0,
diff --git a/src/gallium/auxiliary/draw/draw_pt_fetch.c b/src/gallium/auxiliary/draw/draw_pt_fetch.c
index 252be5053e..a1347221b5 100644
--- a/src/gallium/auxiliary/draw/draw_pt_fetch.c
+++ b/src/gallium/auxiliary/draw/draw_pt_fetch.c
@@ -149,7 +149,8 @@ void draw_pt_fetch_prepare( struct pt_fetch *fetch,
 	 fetch->translate->set_buffer(fetch->translate,
 				      draw->pt.nr_vertex_buffers,
 				      &vh,
-				      0);
+				      0,
+				      ~0);
       }
    }
 
@@ -172,7 +173,8 @@ void draw_pt_fetch_run( struct pt_fetch *fetch,
 			    i, 
 			    ((char *)draw->pt.user.vbuffer[i] + 
 			     draw->pt.vertex_buffer[i].buffer_offset),
-			    draw->pt.vertex_buffer[i].stride );
+			    draw->pt.vertex_buffer[i].stride,
+			    draw->pt.vertex_buffer[i].max_index);
    }
 
    translate->run_elts( translate,
@@ -198,7 +200,8 @@ void draw_pt_fetch_run_linear( struct pt_fetch *fetch,
 			    i,
 			    ((char *)draw->pt.user.vbuffer[i] +
 			     draw->pt.vertex_buffer[i].buffer_offset),
-			    draw->pt.vertex_buffer[i].stride );
+			    draw->pt.vertex_buffer[i].stride,
+			    draw->pt.vertex_buffer[i].max_index);
    }
 
    translate->run( translate,
diff --git a/src/gallium/auxiliary/draw/draw_pt_fetch_emit.c b/src/gallium/auxiliary/draw/draw_pt_fetch_emit.c
index 1994ddf2bc..d7735bf1ac 100644
--- a/src/gallium/auxiliary/draw/draw_pt_fetch_emit.c
+++ b/src/gallium/auxiliary/draw/draw_pt_fetch_emit.c
@@ -168,7 +168,8 @@ static void fetch_emit_prepare( struct draw_pt_middle_end *middle,
       feme->translate->set_buffer(feme->translate, 
 				  draw->pt.nr_vertex_buffers, 
 				  &feme->point_size,
-				  0);
+				  0,
+				  ~0);
    }
    
    feme->point_size = draw->rasterizer->point_size;
@@ -178,7 +179,8 @@ static void fetch_emit_prepare( struct draw_pt_middle_end *middle,
                                   i, 
                                   ((char *)draw->pt.user.vbuffer[i] + 
                                    draw->pt.vertex_buffer[i].buffer_offset),
-                                  draw->pt.vertex_buffer[i].stride );
+                                  draw->pt.vertex_buffer[i].stride,
+                                  draw->pt.vertex_buffer[i].max_index);
    }
 
    *max_vertices = (draw->render->max_vertex_buffer_bytes / 
diff --git a/src/gallium/auxiliary/draw/draw_pt_fetch_shade_emit.c b/src/gallium/auxiliary/draw/draw_pt_fetch_shade_emit.c
index 389e2b105e..cbb5b6c960 100644
--- a/src/gallium/auxiliary/draw/draw_pt_fetch_shade_emit.c
+++ b/src/gallium/auxiliary/draw/draw_pt_fetch_shade_emit.c
@@ -167,7 +167,8 @@ static void fse_prepare( struct draw_pt_middle_end *middle,
                                i, 
                                ((const ubyte *) draw->pt.user.vbuffer[i] + 
                                 draw->pt.vertex_buffer[i].buffer_offset),
-                              draw->pt.vertex_buffer[i].stride );
+                              draw->pt.vertex_buffer[i].stride,
+                              draw->pt.vertex_buffer[i].max_index );
    }
 
    *max_vertices = (draw->render->max_vertex_buffer_bytes / 
diff --git a/src/gallium/auxiliary/draw/draw_vs.h b/src/gallium/auxiliary/draw/draw_vs.h
index f49332352b..efead42335 100644
--- a/src/gallium/auxiliary/draw/draw_vs.h
+++ b/src/gallium/auxiliary/draw/draw_vs.h
@@ -80,7 +80,8 @@ struct draw_vs_varient {
    void (*set_buffer)( struct draw_vs_varient *,
                       unsigned i,
                       const void *ptr,
-                      unsigned stride );
+                      unsigned stride,
+                      unsigned max_stride );
 
    void (PIPE_CDECL *run_linear)( struct draw_vs_varient *shader,
                                   unsigned start,
diff --git a/src/gallium/auxiliary/draw/draw_vs_varient.c b/src/gallium/auxiliary/draw/draw_vs_varient.c
index 5ed706cb4f..0abd827b61 100644
--- a/src/gallium/auxiliary/draw/draw_vs_varient.c
+++ b/src/gallium/auxiliary/draw/draw_vs_varient.c
@@ -66,14 +66,16 @@ struct draw_vs_varient_generic {
 static void vsvg_set_buffer( struct draw_vs_varient *varient,
                              unsigned buffer,
                              const void *ptr,
-                             unsigned stride )
+                             unsigned stride,
+                             unsigned max_index )
 {
    struct draw_vs_varient_generic *vsvg = (struct draw_vs_varient_generic *)varient;
 
    vsvg->fetch->set_buffer(vsvg->fetch, 
                            buffer, 
                            ptr, 
-                           stride);
+                           stride,
+                           max_index );
 }
 
 
@@ -172,12 +174,14 @@ static void PIPE_CDECL vsvg_run_elts( struct draw_vs_varient *varient,
    vsvg->emit->set_buffer( vsvg->emit,
                            0, 
                            temp_buffer,
-                           temp_vertex_stride );
+                           temp_vertex_stride,
+                           ~0 );
 
    vsvg->emit->set_buffer( vsvg->emit, 
                            1,
                            &vsvg->draw->rasterizer->point_size,
-                           0);
+                           0,
+                           ~0 );
 
    vsvg->emit->run( vsvg->emit,
                     0, count,
@@ -232,12 +236,14 @@ static void PIPE_CDECL vsvg_run_linear( struct draw_vs_varient *varient,
    vsvg->emit->set_buffer( vsvg->emit,
                            0, 
                            temp_buffer,
-                           temp_vertex_stride );
+                           temp_vertex_stride,
+                           ~0 );
    
    vsvg->emit->set_buffer( vsvg->emit, 
                            1,
                            &vsvg->draw->rasterizer->point_size,
-                           0);
+                           0,
+                           ~0 );
    
    vsvg->emit->run( vsvg->emit,
                     0, count,