svga: Add more swrast debuging

src/gallium/drivers/svga/svga_context.c

@@ -47,6 +47,8 @@ DEBUG_GET_ONCE_BOOL_OPTION(no_swtnl, "SVGA_NO_SWTNL", FALSE)
 DEBUG_GET_ONCE_BOOL_OPTION(force_swtnl, "SVGA_FORCE_SWTNL", FALSE);
 DEBUG_GET_ONCE_BOOL_OPTION(use_min_mipmap, "SVGA_USE_MIN_MIPMAP", FALSE);
 DEBUG_GET_ONCE_NUM_OPTION(disable_shader, "SVGA_DISABLE_SHADER", ~0);
+DEBUG_GET_ONCE_BOOL_OPTION(no_line_width, "SVGA_NO_LINE_WIDTH", FALSE);
+DEBUG_GET_ONCE_BOOL_OPTION(force_hw_line_stipple, "SVGA_FORCE_HW_LINE_STIPPLE", FALSE);
 
 static void svga_destroy( struct pipe_context *pipe )
 {
@@ -121,6 +123,8 @@ struct pipe_context *svga_context_create( struct pipe_screen *screen,
    svga->debug.force_swtnl = debug_get_option_force_swtnl();
    svga->debug.use_min_mipmap = debug_get_option_use_min_mipmap();
    svga->debug.disable_shader = debug_get_option_disable_shader();
+   svga->debug.no_line_width = debug_get_option_no_line_width();
+   svga->debug.force_hw_line_stipple = debug_get_option_force_hw_line_stipple();
 
    if (!svga_init_swtnl(svga))
       goto no_swtnl;

src/gallium/drivers/svga/svga_context.h

@@ -148,6 +148,10 @@ struct svga_rasterizer_state {
    
    unsigned hw_unfilled:16;         /* PIPE_POLYGON_MODE_x */
    unsigned need_pipeline:16;    /* which prims do we need help for? */
+
+   const char* need_pipeline_tris_str;
+   const char* need_pipeline_lines_str;
+   const char* need_pipeline_points_str;
 };
 
 struct svga_sampler_state {
@@ -317,6 +321,9 @@ struct svga_context
       unsigned shader_id;
 
       unsigned disable_shader;
+
+      boolean no_line_width;
+      boolean force_hw_line_stipple;
    } debug;
 
    struct {

src/gallium/drivers/svga/svga_pipe_rasterizer.c

@@ -64,7 +64,9 @@ static void *
 svga_create_rasterizer_state(struct pipe_context *pipe,
                              const struct pipe_rasterizer_state *templ)
 {
+   struct svga_context *svga = svga_context(pipe);
    struct svga_rasterizer_state *rast = CALLOC_STRUCT( svga_rasterizer_state );
+
    /* need this for draw module. */
    rast->templ = *templ;
 
@@ -93,17 +95,22 @@ svga_create_rasterizer_state(struct pipe_context *pipe,
 
    /* Use swtnl + decomposition implement these:
     */
-   if (templ->poly_stipple_enable)
+   if (templ->poly_stipple_enable) {
       rast->need_pipeline |= SVGA_PIPELINE_FLAG_TRIS;
+      rast->need_pipeline_tris_str = "poly stipple";
+   }
 
    if (templ->line_width != 1.0 &&
-       templ->line_width != 0.0)
+       templ->line_width != 0.0 &&
+       !svga->debug.no_line_width) {
       rast->need_pipeline |= SVGA_PIPELINE_FLAG_LINES;
+      rast->need_pipeline_lines_str = "line width";
+   }
 
    if (templ->line_stipple_enable) {
       /* LinePattern not implemented on all backends. 
        */
-      if (0) {
+      if (!svga->debug.force_hw_line_stipple) {
          SVGA3dLinePattern lp;
          lp.repeat = templ->line_stipple_factor + 1;
          lp.pattern = templ->line_stipple_pattern;
@@ -111,11 +118,14 @@ svga_create_rasterizer_state(struct pipe_context *pipe,
       }
       else {
          rast->need_pipeline |= SVGA_PIPELINE_FLAG_LINES;
+         rast->need_pipeline_lines_str = "line stipple";
       }
    } 
 
-   if (templ->point_smooth)
+   if (templ->point_smooth) {
       rast->need_pipeline |= SVGA_PIPELINE_FLAG_POINTS;
+      rast->need_pipeline_points_str = "smooth points";
+   }
 
    {
       int fill_front = templ->fill_front;
@@ -148,6 +158,7 @@ svga_create_rasterizer_state(struct pipe_context *pipe,
              * front/back fill modes:
              */
             rast->need_pipeline |= SVGA_PIPELINE_FLAG_TRIS;
+            rast->need_pipeline_tris_str = "different front/back fillmodes";
          }
          else {
             offset = offset_front;
@@ -172,6 +183,7 @@ svga_create_rasterizer_state(struct pipe_context *pipe,
       {
          fill = PIPE_POLYGON_MODE_FILL;
          rast->need_pipeline |= SVGA_PIPELINE_FLAG_TRIS;
+         rast->need_pipeline_tris_str = "unfilled primitives with no index manipulation";
       }
 
       /* If we are decomposing to lines, and lines need the pipeline,
@@ -182,6 +194,7 @@ svga_create_rasterizer_state(struct pipe_context *pipe,
       {
          fill = PIPE_POLYGON_MODE_FILL;
          rast->need_pipeline |= SVGA_PIPELINE_FLAG_TRIS;
+         rast->need_pipeline_tris_str = "decomposing lines";
       }
 
       /* Similarly for points:
@@ -191,6 +204,7 @@ svga_create_rasterizer_state(struct pipe_context *pipe,
       {
          fill = PIPE_POLYGON_MODE_FILL;
          rast->need_pipeline |= SVGA_PIPELINE_FLAG_TRIS;
+         rast->need_pipeline_tris_str = "decomposing points";
       }
 
       if (offset) {

src/gallium/drivers/svga/svga_state_need_swtnl.c

@@ -118,6 +118,11 @@ static int update_need_pipeline( struct svga_context *svga,
                  __FUNCTION__,
                  svga->curr.rast->need_pipeline,
                  (1 << svga->curr.reduced_prim) );
+      SVGA_DBG(DEBUG_SWTNL, "%s: rast need_pipeline tris (%s), lines (%s), points (%s)\n",
+                 __FUNCTION__,
+                 svga->curr.rast->need_pipeline_tris_str,
+                 svga->curr.rast->need_pipeline_lines_str,
+                 svga->curr.rast->need_pipeline_points_str);
       need_pipeline = TRUE;
    }