softpipe: Drop the quad pstipple stage.

It's unused, and it doesn't have the information it needs ("what is the
prim type after poly fill mode but without considering
wide point/line-to-triangle conversion) to stipple correctly.

Reviewed-by: Zoltán Böszőrményi <zboszor@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13731>

7 files changed, 0 insertions, 94 deletions

diff --git a/src/gallium/drivers/softpipe/meson.build b/src/gallium/drivers/softpipe/meson.build
index 77b0c9ca3a0..e3bdf7e480d 100644
--- a/src/gallium/drivers/softpipe/meson.build
+++ b/src/gallium/drivers/softpipe/meson.build
@@ -46,7 +46,6 @@ files_softpipe = files(
   'sp_quad.h',
   'sp_quad_pipe.c',
   'sp_quad_pipe.h',
-  'sp_quad_stipple.c',
   'sp_query.c',
   'sp_query.h',
   'sp_screen.c',
diff --git a/src/gallium/drivers/softpipe/sp_context.c b/src/gallium/drivers/softpipe/sp_context.c
index a633a43a431..0f5a882eaf4 100644
--- a/src/gallium/drivers/softpipe/sp_context.c
+++ b/src/gallium/drivers/softpipe/sp_context.c
@@ -84,9 +84,6 @@ softpipe_destroy( struct pipe_context *pipe )
    if (softpipe->quad.blend)
       softpipe->quad.blend->destroy( softpipe->quad.blend );
 
-   if (softpipe->quad.pstipple)
-      softpipe->quad.pstipple->destroy( softpipe->quad.pstipple );
-
    if (softpipe->pipe.stream_uploader)
       u_upload_destroy(softpipe->pipe.stream_uploader);
 
@@ -278,7 +275,6 @@ softpipe_create_context(struct pipe_screen *screen,
    softpipe->quad.shade = sp_quad_shade_stage(softpipe);
    softpipe->quad.depth_test = sp_quad_depth_test_stage(softpipe);
    softpipe->quad.blend = sp_quad_blend_stage(softpipe);
-   softpipe->quad.pstipple = sp_quad_polygon_stipple_stage(softpipe);
 
    softpipe->pipe.stream_uploader = u_upload_create_default(&softpipe->pipe);
    if (!softpipe->pipe.stream_uploader)
diff --git a/src/gallium/drivers/softpipe/sp_context.h b/src/gallium/drivers/softpipe/sp_context.h
index cd2e498de6b..70aac737960 100644
--- a/src/gallium/drivers/softpipe/sp_context.h
+++ b/src/gallium/drivers/softpipe/sp_context.h
@@ -165,7 +165,6 @@ struct softpipe_context {
       struct quad_stage *shade;
       struct quad_stage *depth_test;
       struct quad_stage *blend;
-      struct quad_stage *pstipple;
       struct quad_stage *first; /**< points to one of the above stages */
    } quad;
 
diff --git a/src/gallium/drivers/softpipe/sp_quad_pipe.c b/src/gallium/drivers/softpipe/sp_quad_pipe.c
index d645abf3f93..444509104fe 100644
--- a/src/gallium/drivers/softpipe/sp_quad_pipe.c
+++ b/src/gallium/drivers/softpipe/sp_quad_pipe.c
@@ -62,10 +62,5 @@ sp_build_quad_pipeline(struct softpipe_context *sp)
       insert_stage_at_head( sp, sp->quad.depth_test );
       insert_stage_at_head( sp, sp->quad.shade );
    }
-
-#if !DO_PSTIPPLE_IN_DRAW_MODULE && !DO_PSTIPPLE_IN_HELPER_MODULE
-   if (sp->rasterizer->poly_stipple_enable)
-      insert_stage_at_head( sp, sp->quad.pstipple );
-#endif
 }
 
diff --git a/src/gallium/drivers/softpipe/sp_quad_pipe.h b/src/gallium/drivers/softpipe/sp_quad_pipe.h
index 5d4ecfdec3a..4ea9c0f4430 100644
--- a/src/gallium/drivers/softpipe/sp_quad_pipe.h
+++ b/src/gallium/drivers/softpipe/sp_quad_pipe.h
@@ -55,7 +55,6 @@ struct quad_stage {
 };
 
 
-struct quad_stage *sp_quad_polygon_stipple_stage( struct softpipe_context *softpipe );
 struct quad_stage *sp_quad_earlyz_stage( struct softpipe_context *softpipe );
 struct quad_stage *sp_quad_shade_stage( struct softpipe_context *softpipe );
 struct quad_stage *sp_quad_alpha_test_stage( struct softpipe_context *softpipe );
diff --git a/src/gallium/drivers/softpipe/sp_quad_stipple.c b/src/gallium/drivers/softpipe/sp_quad_stipple.c
deleted file mode 100644
index 4b29c2eb221..00000000000
--- a/src/gallium/drivers/softpipe/sp_quad_stipple.c
+++ /dev/null
@@ -1,81 +0,0 @@
-
-/**
- * quad polygon stipple stage
- */
-
-#include "sp_context.h"
-#include "sp_quad.h"
-#include "sp_quad_pipe.h"
-#include "pipe/p_defines.h"
-#include "util/u_memory.h"
-
-
-/**
- * Apply polygon stipple to quads produced by triangle rasterization
- */
-static void
-stipple_quad(struct quad_stage *qs, struct quad_header *quads[], unsigned nr)
-{
-   static const uint bit31 = 1u << 31;
-   static const uint bit30 = 1u << 30;
-   unsigned pass = nr;
-
-   struct softpipe_context *softpipe = qs->softpipe;
-   unsigned q;
-
-   pass = 0;
-
-   for (q = 0; q < nr; q++)  {
-      struct quad_header *quad = quads[q];
-
-      const int col0 = quad->input.x0 % 32;
-      const int y0 = quad->input.y0;
-      const int y1 = y0 + 1;
-      const uint stipple0 = softpipe->poly_stipple.stipple[y0 % 32];
-      const uint stipple1 = softpipe->poly_stipple.stipple[y1 % 32];
-
-      /* turn off quad mask bits that fail the stipple test */
-      if ((stipple0 & (bit31 >> col0)) == 0)
-         quad->inout.mask &= ~MASK_TOP_LEFT;
-
-      if ((stipple0 & (bit30 >> col0)) == 0)
-         quad->inout.mask &= ~MASK_TOP_RIGHT;
-
-      if ((stipple1 & (bit31 >> col0)) == 0)
-         quad->inout.mask &= ~MASK_BOTTOM_LEFT;
-
-      if ((stipple1 & (bit30 >> col0)) == 0)
-         quad->inout.mask &= ~MASK_BOTTOM_RIGHT;
-
-      if (quad->inout.mask)
-         quads[pass++] = quad;
-   }
-
-   qs->next->run(qs->next, quads, pass);
-}
-
-
-static void stipple_begin(struct quad_stage *qs)
-{
-   qs->next->begin(qs->next);
-}
-
-
-static void stipple_destroy(struct quad_stage *qs)
-{
-   FREE( qs );
-}
-
-
-struct quad_stage *
-sp_quad_polygon_stipple_stage( struct softpipe_context *softpipe )
-{
-   struct quad_stage *stage = CALLOC_STRUCT(quad_stage);
-
-   stage->softpipe = softpipe;
-   stage->begin = stipple_begin;
-   stage->run = stipple_quad;
-   stage->destroy = stipple_destroy;
-
-   return stage;
-}
diff --git a/src/gallium/drivers/softpipe/sp_state_derived.c b/src/gallium/drivers/softpipe/sp_state_derived.c
index a5e97869f80..e7ee921c719 100644
--- a/src/gallium/drivers/softpipe/sp_state_derived.c
+++ b/src/gallium/drivers/softpipe/sp_state_derived.c
@@ -479,7 +479,6 @@ softpipe_update_derived(struct softpipe_context *softpipe, unsigned prim)
    if (softpipe->dirty & (SP_NEW_BLEND |
                           SP_NEW_DEPTH_STENCIL_ALPHA |
                           SP_NEW_FRAMEBUFFER |
-                          SP_NEW_STIPPLE |
                           SP_NEW_FS))
       sp_build_quad_pipeline(softpipe);