From e3a34cc7f6c9f959cdc2af4486e84587fab4d0d7 Mon Sep 17 00:00:00 2001
From: Brian Paul <brianp@vmware.com>
Date: Mon, 19 Apr 2010 08:35:53 -0600
Subject: gallium/draw: use correct rasterization state for wide/AA
 points/lines

When points or lines are decomposed into triangles, we need to be sure
to disable polygon culling, stippling, "un-filled" modes, etc.

This patch sets the rasterization state to disable those things prior to
drawing points/lines with triangles, then restores the previous state
afterward.

The new piglit point-no-line-cull test checks this problem & solution.
---
 src/gallium/auxiliary/draw/draw_context.c         | 65 ++++++++++++++++++++---
 src/gallium/auxiliary/draw/draw_context.h         |  5 +-
 src/gallium/auxiliary/draw/draw_pipe_aaline.c     | 49 ++++++++++-------
 src/gallium/auxiliary/draw/draw_pipe_aapoint.c    | 39 +++++++++-----
 src/gallium/auxiliary/draw/draw_pipe_wide_line.c  | 34 +++++++++++-
 src/gallium/auxiliary/draw/draw_pipe_wide_point.c | 20 +++++++
 src/gallium/auxiliary/draw/draw_private.h         | 15 +++++-
 7 files changed, 186 insertions(+), 41 deletions(-)

(limited to 'src/gallium/auxiliary')

diff --git a/src/gallium/auxiliary/draw/draw_context.c b/src/gallium/auxiliary/draw/draw_context.c
index bb0988543f..18435af848 100644
--- a/src/gallium/auxiliary/draw/draw_context.c
+++ b/src/gallium/auxiliary/draw/draw_context.c
@@ -31,6 +31,7 @@
   */
 
 
+#include "pipe/p_context.h"
 #include "util/u_memory.h"
 #include "util/u_math.h"
 #include "draw_context.h"
@@ -38,7 +39,7 @@
 #include "draw_gs.h"
 
 
-struct draw_context *draw_create( void )
+struct draw_context *draw_create( struct pipe_context *pipe )
 {
    struct draw_context *draw = CALLOC_STRUCT( draw_context );
    if (draw == NULL)
@@ -68,6 +69,8 @@ struct draw_context *draw_create( void )
    if (!draw_gs_init( draw ))
       goto fail;
 
+   draw->pipe = pipe;
+
    return draw;
 
 fail:
@@ -78,10 +81,21 @@ fail:
 
 void draw_destroy( struct draw_context *draw )
 {
+   struct pipe_context *pipe = draw->pipe;
+   int i, j;
+
    if (!draw)
       return;
 
-
+   /* free any rasterizer CSOs that we may have created.
+    */
+   for (i = 0; i < 2; i++) {
+      for (j = 0; j < 2; j++) {
+         if (draw->rasterizer_no_cull[i][j]) {
+            pipe->delete_rasterizer_state(pipe, draw->rasterizer_no_cull[i][j]);
+         }
+      }
+   }
 
    /* Not so fast -- we're just borrowing this at the moment.
     * 
@@ -123,12 +137,17 @@ void draw_set_mrd(struct draw_context *draw, double mrd)
  * This causes the drawing pipeline to be rebuilt.
  */
 void draw_set_rasterizer_state( struct draw_context *draw,
-                                const struct pipe_rasterizer_state *raster )
+                                const struct pipe_rasterizer_state *raster,
+                                void *rast_handle )
 {
-   draw_do_flush( draw, DRAW_FLUSH_STATE_CHANGE );
+   if (!draw->suspend_flushing) {
+      draw_do_flush( draw, DRAW_FLUSH_STATE_CHANGE );
 
-   draw->rasterizer = raster;
-   draw->bypass_clipping = draw->driver.bypass_clipping;
+      draw->rasterizer = raster;
+      draw->rast_handle = rast_handle;
+
+      draw->bypass_clipping = draw->driver.bypass_clipping;
+   }
 }
 
 
@@ -481,3 +500,37 @@ draw_current_shader_position_output(const struct draw_context *draw)
       return draw->gs.position_output;
    return draw->vs.position_output;
 }
+
+
+/**
+ * Return a pointer/handle for a driver/CSO rasterizer object which
+ * disabled culling, stippling, unfilled tris, etc.
+ * This is used by some pipeline stages (such as wide_point, aa_line
+ * and aa_point) which convert points/lines into triangles.  In those
+ * cases we don't want to accidentally cull the triangles.
+ *
+ * \param scissor  should the rasterizer state enable scissoring?
+ * \param flatshade  should the rasterizer state use flat shading?
+ * \return  rasterizer CSO handle
+ */
+void *
+draw_get_rasterizer_no_cull( struct draw_context *draw,
+                             boolean scissor,
+                             boolean flatshade )
+{
+   if (!draw->rasterizer_no_cull[scissor][flatshade]) {
+      /* create now */
+      struct pipe_context *pipe = draw->pipe;
+      struct pipe_rasterizer_state rast;
+
+      memset(&rast, 0, sizeof(rast));
+      rast.scissor = scissor;
+      rast.flatshade = flatshade;
+      rast.front_winding = PIPE_WINDING_CCW;
+      rast.gl_rasterization_rules = draw->rasterizer->gl_rasterization_rules;
+
+      draw->rasterizer_no_cull[scissor][flatshade] =
+         pipe->create_rasterizer_state(pipe, &rast);
+   }
+   return draw->rasterizer_no_cull[scissor][flatshade];
+}
diff --git a/src/gallium/auxiliary/draw/draw_context.h b/src/gallium/auxiliary/draw/draw_context.h
index acd81b9712..3b21a88170 100644
--- a/src/gallium/auxiliary/draw/draw_context.h
+++ b/src/gallium/auxiliary/draw/draw_context.h
@@ -49,7 +49,7 @@ struct draw_geometry_shader;
 struct tgsi_sampler;
 
 
-struct draw_context *draw_create( void );
+struct draw_context *draw_create( struct pipe_context *pipe );
 
 void draw_destroy( struct draw_context *draw );
 
@@ -60,7 +60,8 @@ void draw_set_clip_state( struct draw_context *pipe,
                           const struct pipe_clip_state *clip );
 
 void draw_set_rasterizer_state( struct draw_context *draw,
-                                const struct pipe_rasterizer_state *raster );
+                                const struct pipe_rasterizer_state *raster,
+                                void *rast_handle );
 
 void draw_set_rasterize_stage( struct draw_context *draw,
                                struct draw_stage *stage );
diff --git a/src/gallium/auxiliary/draw/draw_pipe_aaline.c b/src/gallium/auxiliary/draw/draw_pipe_aaline.c
index 8f6ca15dfa..72d7480efb 100644
--- a/src/gallium/auxiliary/draw/draw_pipe_aaline.c
+++ b/src/gallium/auxiliary/draw/draw_pipe_aaline.c
@@ -113,8 +113,6 @@ struct aaline_stage
                                       void **);
    void (*driver_set_sampler_textures)(struct pipe_context *, unsigned,
                                        struct pipe_texture **);
-
-   struct pipe_context *pipe;
 };
 
 
@@ -339,6 +337,7 @@ aa_transform_inst(struct tgsi_transform_context *ctx,
 static boolean
 generate_aaline_fs(struct aaline_stage *aaline)
 {
+   struct pipe_context *pipe = aaline->stage.draw->pipe;
    const struct pipe_shader_state *orig_fs = &aaline->fs->state;
    struct pipe_shader_state aaline_fs;
    struct aa_transform_context transform;
@@ -371,7 +370,7 @@ generate_aaline_fs(struct aaline_stage *aaline)
    aaline->fs->sampler_unit = transform.freeSampler;
 
    aaline->fs->aaline_fs
-      = aaline->driver_create_fs_state(aaline->pipe, &aaline_fs);
+      = aaline->driver_create_fs_state(pipe, &aaline_fs);
    if (aaline->fs->aaline_fs == NULL)
       goto fail;
 
@@ -391,7 +390,7 @@ fail:
 static boolean
 aaline_create_texture(struct aaline_stage *aaline)
 {
-   struct pipe_context *pipe = aaline->pipe;
+   struct pipe_context *pipe = aaline->stage.draw->pipe;
    struct pipe_screen *screen = pipe->screen;
    struct pipe_texture texTemp;
    uint level;
@@ -464,7 +463,7 @@ static boolean
 aaline_create_sampler(struct aaline_stage *aaline)
 {
    struct pipe_sampler_state sampler;
-   struct pipe_context *pipe = aaline->pipe;
+   struct pipe_context *pipe = aaline->stage.draw->pipe;
 
    memset(&sampler, 0, sizeof(sampler));
    sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
@@ -493,13 +492,14 @@ static boolean
 bind_aaline_fragment_shader(struct aaline_stage *aaline)
 {
    struct draw_context *draw = aaline->stage.draw;
+   struct pipe_context *pipe = draw->pipe;
 
    if (!aaline->fs->aaline_fs && 
        !generate_aaline_fs(aaline))
       return FALSE;
 
    draw->suspend_flushing = TRUE;
-   aaline->driver_bind_fs_state(aaline->pipe, aaline->fs->aaline_fs);
+   aaline->driver_bind_fs_state(pipe, aaline->fs->aaline_fs);
    draw->suspend_flushing = FALSE;
 
    return TRUE;
@@ -639,8 +639,10 @@ aaline_first_line(struct draw_stage *stage, struct prim_header *header)
 {
    auto struct aaline_stage *aaline = aaline_stage(stage);
    struct draw_context *draw = stage->draw;
-   struct pipe_context *pipe = aaline->pipe;
+   struct pipe_context *pipe = draw->pipe;
+   const struct pipe_rasterizer_state *rast = draw->rasterizer;
    uint num_samplers;
+   void *r;
 
    assert(draw->rasterizer->line_smooth);
 
@@ -679,6 +681,11 @@ aaline_first_line(struct draw_stage *stage, struct prim_header *header)
    draw->suspend_flushing = TRUE;
    aaline->driver_bind_sampler_states(pipe, num_samplers, aaline->state.sampler);
    aaline->driver_set_sampler_textures(pipe, num_samplers, aaline->state.texture);
+
+   /* Disable triangle culling, stippling, unfilled mode etc. */
+   r = draw_get_rasterizer_no_cull(draw, rast->scissor, rast->flatshade);
+   pipe->bind_rasterizer_state(pipe, r);
+
    draw->suspend_flushing = FALSE;
 
    /* now really draw first line */
@@ -692,7 +699,7 @@ aaline_flush(struct draw_stage *stage, unsigned flags)
 {
    struct draw_context *draw = stage->draw;
    struct aaline_stage *aaline = aaline_stage(stage);
-   struct pipe_context *pipe = aaline->pipe;
+   struct pipe_context *pipe = draw->pipe;
 
    stage->line = aaline_first_line;
    stage->next->flush( stage->next, flags );
@@ -704,6 +711,12 @@ aaline_flush(struct draw_stage *stage, unsigned flags)
                                       aaline->state.sampler);
    aaline->driver_set_sampler_textures(pipe, aaline->num_textures,
                                        aaline->state.texture);
+
+   /* restore original rasterizer state */
+   if (draw->rast_handle) {
+      pipe->bind_rasterizer_state(pipe, draw->rast_handle);
+   }
+
    draw->suspend_flushing = FALSE;
 
    draw->extra_shader_outputs.slot = 0;
@@ -721,6 +734,7 @@ static void
 aaline_destroy(struct draw_stage *stage)
 {
    struct aaline_stage *aaline = aaline_stage(stage);
+   struct pipe_context *pipe = stage->draw->pipe;
    uint i;
 
    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
@@ -728,7 +742,7 @@ aaline_destroy(struct draw_stage *stage)
    }
 
    if (aaline->sampler_cso)
-      aaline->pipe->delete_sampler_state(aaline->pipe, aaline->sampler_cso);
+      pipe->delete_sampler_state(pipe, aaline->sampler_cso);
 
    if (aaline->texture)
       pipe_texture_reference(&aaline->texture, NULL);
@@ -787,13 +801,14 @@ aaline_create_fs_state(struct pipe_context *pipe,
 {
    struct aaline_stage *aaline = aaline_stage_from_pipe(pipe);
    struct aaline_fragment_shader *aafs = CALLOC_STRUCT(aaline_fragment_shader);
+
    if (aafs == NULL)
       return NULL;
 
    aafs->state = *fs;
 
    /* pass-through */
-   aafs->driver_fs = aaline->driver_create_fs_state(aaline->pipe, fs);
+   aafs->driver_fs = aaline->driver_create_fs_state(pipe, fs);
 
    return aafs;
 }
@@ -808,8 +823,7 @@ aaline_bind_fs_state(struct pipe_context *pipe, void *fs)
    /* save current */
    aaline->fs = aafs;
    /* pass-through */
-   aaline->driver_bind_fs_state(aaline->pipe,
-                                (aafs ? aafs->driver_fs : NULL));
+   aaline->driver_bind_fs_state(pipe, (aafs ? aafs->driver_fs : NULL));
 }
 
 
@@ -818,11 +832,12 @@ aaline_delete_fs_state(struct pipe_context *pipe, void *fs)
 {
    struct aaline_stage *aaline = aaline_stage_from_pipe(pipe);
    struct aaline_fragment_shader *aafs = (struct aaline_fragment_shader *) fs;
+
    /* pass-through */
-   aaline->driver_delete_fs_state(aaline->pipe, aafs->driver_fs);
+   aaline->driver_delete_fs_state(pipe, aafs->driver_fs);
 
    if (aafs->aaline_fs)
-      aaline->driver_delete_fs_state(aaline->pipe, aafs->aaline_fs);
+      aaline->driver_delete_fs_state(pipe, aafs->aaline_fs);
 
    FREE(aafs);
 }
@@ -839,7 +854,7 @@ aaline_bind_sampler_states(struct pipe_context *pipe,
    aaline->num_samplers = num;
 
    /* pass-through */
-   aaline->driver_bind_sampler_states(aaline->pipe, num, sampler);
+   aaline->driver_bind_sampler_states(pipe, num, sampler);
 }
 
 
@@ -860,7 +875,7 @@ aaline_set_sampler_textures(struct pipe_context *pipe,
    aaline->num_textures = num;
 
    /* pass-through */
-   aaline->driver_set_sampler_textures(aaline->pipe, num, texture);
+   aaline->driver_set_sampler_textures(pipe, num, texture);
 }
 
 
@@ -883,8 +898,6 @@ draw_install_aaline_stage(struct draw_context *draw, struct pipe_context *pipe)
    if (!aaline)
       goto fail;
 
-   aaline->pipe = pipe;
-
    /* create special texture, sampler state */
    if (!aaline_create_texture(aaline))
       goto fail;
diff --git a/src/gallium/auxiliary/draw/draw_pipe_aapoint.c b/src/gallium/auxiliary/draw/draw_pipe_aapoint.c
index 9f9fb4312c..bba6f50c02 100644
--- a/src/gallium/auxiliary/draw/draw_pipe_aapoint.c
+++ b/src/gallium/auxiliary/draw/draw_pipe_aapoint.c
@@ -107,8 +107,6 @@ struct aapoint_stage
                                     const struct pipe_shader_state *);
    void (*driver_bind_fs_state)(struct pipe_context *, void *);
    void (*driver_delete_fs_state)(struct pipe_context *, void *);
-
-   struct pipe_context *pipe;
 };
 
 
@@ -499,6 +497,7 @@ generate_aapoint_fs(struct aapoint_stage *aapoint)
    struct pipe_shader_state aapoint_fs;
    struct aa_transform_context transform;
    const uint newLen = tgsi_num_tokens(orig_fs->tokens) + NUM_NEW_TOKENS;
+   struct pipe_context *pipe = aapoint->stage.draw->pipe;
 
    aapoint_fs = *orig_fs; /* copy to init */
    aapoint_fs.tokens = tgsi_alloc_tokens(newLen);
@@ -527,7 +526,7 @@ generate_aapoint_fs(struct aapoint_stage *aapoint)
 #endif
 
    aapoint->fs->aapoint_fs
-      = aapoint->driver_create_fs_state(aapoint->pipe, &aapoint_fs);
+      = aapoint->driver_create_fs_state(pipe, &aapoint_fs);
    if (aapoint->fs->aapoint_fs == NULL)
       goto fail;
 
@@ -549,13 +548,14 @@ static boolean
 bind_aapoint_fragment_shader(struct aapoint_stage *aapoint)
 {
    struct draw_context *draw = aapoint->stage.draw;
+   struct pipe_context *pipe = draw->pipe;
 
    if (!aapoint->fs->aapoint_fs &&
        !generate_aapoint_fs(aapoint))
       return FALSE;
 
    draw->suspend_flushing = TRUE;
-   aapoint->driver_bind_fs_state(aapoint->pipe, aapoint->fs->aapoint_fs);
+   aapoint->driver_bind_fs_state(pipe, aapoint->fs->aapoint_fs);
    draw->suspend_flushing = FALSE;
 
    return TRUE;
@@ -679,6 +679,9 @@ aapoint_first_point(struct draw_stage *stage, struct prim_header *header)
 {
    auto struct aapoint_stage *aapoint = aapoint_stage(stage);
    struct draw_context *draw = stage->draw;
+   struct pipe_context *pipe = draw->pipe;
+   const struct pipe_rasterizer_state *rast = draw->rasterizer;
+   void *r;
 
    assert(draw->rasterizer->point_smooth);
 
@@ -716,6 +719,14 @@ aapoint_first_point(struct draw_stage *stage, struct prim_header *header)
       }
    }
 
+   draw->suspend_flushing = TRUE;
+
+   /* Disable triangle culling, stippling, unfilled mode etc. */
+   r = draw_get_rasterizer_no_cull(draw, rast->scissor, rast->flatshade);
+   pipe->bind_rasterizer_state(pipe, r);
+
+   draw->suspend_flushing = FALSE;
+
    /* now really draw first point */
    stage->point = aapoint_point;
    stage->point(stage, header);
@@ -727,7 +738,7 @@ aapoint_flush(struct draw_stage *stage, unsigned flags)
 {
    struct draw_context *draw = stage->draw;
    struct aapoint_stage *aapoint = aapoint_stage(stage);
-   struct pipe_context *pipe = aapoint->pipe;
+   struct pipe_context *pipe = draw->pipe;
 
    stage->point = aapoint_first_point;
    stage->next->flush( stage->next, flags );
@@ -735,6 +746,12 @@ aapoint_flush(struct draw_stage *stage, unsigned flags)
    /* restore original frag shader */
    draw->suspend_flushing = TRUE;
    aapoint->driver_bind_fs_state(pipe, aapoint->fs->driver_fs);
+
+   /* restore original rasterizer state */
+   if (draw->rast_handle) {
+      pipe->bind_rasterizer_state(pipe, draw->rast_handle);
+   }
+
    draw->suspend_flushing = FALSE;
 
    draw->extra_shader_outputs.slot = 0;
@@ -811,7 +828,7 @@ aapoint_create_fs_state(struct pipe_context *pipe,
    aafs->state = *fs;
 
    /* pass-through */
-   aafs->driver_fs = aapoint->driver_create_fs_state(aapoint->pipe, fs);
+   aafs->driver_fs = aapoint->driver_create_fs_state(pipe, fs);
 
    return aafs;
 }
@@ -825,7 +842,7 @@ aapoint_bind_fs_state(struct pipe_context *pipe, void *fs)
    /* save current */
    aapoint->fs = aafs;
    /* pass-through */
-   aapoint->driver_bind_fs_state(aapoint->pipe,
+   aapoint->driver_bind_fs_state(pipe,
                                  (aafs ? aafs->driver_fs : NULL));
 }
 
@@ -837,10 +854,10 @@ aapoint_delete_fs_state(struct pipe_context *pipe, void *fs)
    struct aapoint_fragment_shader *aafs = (struct aapoint_fragment_shader *) fs;
 
    /* pass-through */
-   aapoint->driver_delete_fs_state(aapoint->pipe, aafs->driver_fs);
+   aapoint->driver_delete_fs_state(pipe, aafs->driver_fs);
 
    if (aafs->aapoint_fs)
-      aapoint->driver_delete_fs_state(aapoint->pipe, aafs->aapoint_fs);
+      aapoint->driver_delete_fs_state(pipe, aafs->aapoint_fs);
 
    FREE(aafs);
 }
@@ -857,8 +874,6 @@ draw_install_aapoint_stage(struct draw_context *draw,
 {
    struct aapoint_stage *aapoint;
 
-   pipe->draw = (void *) draw;
-
    /*
     * Create / install AA point drawing / prim stage
     */
@@ -866,8 +881,6 @@ draw_install_aapoint_stage(struct draw_context *draw,
    if (aapoint == NULL)
       return FALSE;
 
-   aapoint->pipe = pipe;
-
    /* save original driver functions */
    aapoint->driver_create_fs_state = pipe->create_fs_state;
    aapoint->driver_bind_fs_state = pipe->bind_fs_state;
diff --git a/src/gallium/auxiliary/draw/draw_pipe_wide_line.c b/src/gallium/auxiliary/draw/draw_pipe_wide_line.c
index 3073c87082..265a420d01 100644
--- a/src/gallium/auxiliary/draw/draw_pipe_wide_line.c
+++ b/src/gallium/auxiliary/draw/draw_pipe_wide_line.c
@@ -28,6 +28,7 @@
 /* Authors:  Keith Whitwell <keith@tungstengraphics.com>
  */
 
+#include "pipe/p_context.h"
 #include "pipe/p_defines.h"
 #include "pipe/p_shader_tokens.h"
 #include "util/u_math.h"
@@ -142,9 +143,40 @@ static void wideline_line( struct draw_stage *stage,
 }
 
 
+static void wideline_first_line( struct draw_stage *stage, 
+                                 struct prim_header *header )
+{
+   struct draw_context *draw = stage->draw;
+   struct pipe_context *pipe = draw->pipe;
+   const struct pipe_rasterizer_state *rast = draw->rasterizer;
+   void *r;
+
+   /* Disable triangle culling, stippling, unfilled mode etc. */
+   r = draw_get_rasterizer_no_cull(draw, rast->scissor, rast->flatshade);
+   draw->suspend_flushing = TRUE;
+   pipe->bind_rasterizer_state(pipe, r);
+   draw->suspend_flushing = FALSE;
+
+   stage->line = wideline_line;
+
+   wideline_line(stage, header);
+}
+
+
 static void wideline_flush( struct draw_stage *stage, unsigned flags )
 {
+   struct draw_context *draw = stage->draw;
+   struct pipe_context *pipe = draw->pipe;
+
+   stage->line = wideline_first_line;
    stage->next->flush( stage->next, flags );
+
+   /* restore original rasterizer state */
+   if (draw->rast_handle) {
+      draw->suspend_flushing = TRUE;
+      pipe->bind_rasterizer_state(pipe, draw->rast_handle);
+      draw->suspend_flushing = FALSE;
+   }
 }
 
 
@@ -171,7 +203,7 @@ struct draw_stage *draw_wide_line_stage( struct draw_context *draw )
    wide->stage.name = "wide-line";
    wide->stage.next = NULL;
    wide->stage.point = draw_pipe_passthrough_point;
-   wide->stage.line = wideline_line;
+   wide->stage.line = wideline_first_line;
    wide->stage.tri = draw_pipe_passthrough_tri;
    wide->stage.flush = wideline_flush;
    wide->stage.reset_stipple_counter = wideline_reset_stipple_counter;
diff --git a/src/gallium/auxiliary/draw/draw_pipe_wide_point.c b/src/gallium/auxiliary/draw/draw_pipe_wide_point.c
index fdabce7d44..d6d7513e2a 100644
--- a/src/gallium/auxiliary/draw/draw_pipe_wide_point.c
+++ b/src/gallium/auxiliary/draw/draw_pipe_wide_point.c
@@ -52,6 +52,7 @@
  */
 
 
+#include "pipe/p_context.h"
 #include "util/u_math.h"
 #include "util/u_memory.h"
 #include "pipe/p_defines.h"
@@ -213,6 +214,9 @@ static void widepoint_first_point( struct draw_stage *stage,
 {
    struct widepoint_stage *wide = widepoint_stage(stage);
    struct draw_context *draw = stage->draw;
+   struct pipe_context *pipe = draw->pipe;
+   const struct pipe_rasterizer_state *rast = draw->rasterizer;
+   void *r;
 
    wide->half_point_size = 0.5f * draw->rasterizer->point_size;
    wide->xbias = 0.0;
@@ -222,6 +226,12 @@ static void widepoint_first_point( struct draw_stage *stage,
       wide->xbias = 0.125;
    }
 
+   /* Disable triangle culling, stippling, unfilled mode etc. */
+   r = draw_get_rasterizer_no_cull(draw, rast->scissor, rast->flatshade);
+   draw->suspend_flushing = TRUE;
+   pipe->bind_rasterizer_state(pipe, r);
+   draw->suspend_flushing = FALSE;
+
    /* XXX we won't know the real size if it's computed by the vertex shader! */
    if ((draw->rasterizer->point_size > draw->pipeline.wide_point_threshold) ||
        (draw->rasterizer->sprite_coord_enable && draw->pipeline.point_sprite)) {
@@ -277,9 +287,19 @@ static void widepoint_first_point( struct draw_stage *stage,
 
 static void widepoint_flush( struct draw_stage *stage, unsigned flags )
 {
+   struct draw_context *draw = stage->draw;
+   struct pipe_context *pipe = draw->pipe;
+
    stage->point = widepoint_first_point;
    stage->next->flush( stage->next, flags );
    stage->draw->extra_shader_outputs.slot = 0;
+
+   /* restore original rasterizer state */
+   if (draw->rast_handle) {
+      draw->suspend_flushing = TRUE;
+      pipe->bind_rasterizer_state(pipe, draw->rast_handle);
+      draw->suspend_flushing = FALSE;
+   }
 }
 
 
diff --git a/src/gallium/auxiliary/draw/draw_private.h b/src/gallium/auxiliary/draw/draw_private.h
index 1e6e01af9e..3fe3dc519d 100644
--- a/src/gallium/auxiliary/draw/draw_private.h
+++ b/src/gallium/auxiliary/draw/draw_private.h
@@ -82,6 +82,8 @@ struct vertex_header {
  */
 struct draw_context
 {
+   struct pipe_context *pipe;
+
    /** Drawing/primitive pipeline stages */
    struct {
       struct draw_stage *first;  /**< one of the following */
@@ -174,8 +176,14 @@ struct draw_context
 
    double mrd;  /**< minimum resolvable depth value, for polygon offset */
 
-   /* pipe state that we need: */
+   /** Current rasterizer state given to us by the driver */
    const struct pipe_rasterizer_state *rasterizer;
+   /** Driver CSO handle for the current rasterizer state */
+   void *rast_handle;
+
+   /** Rasterizer CSOs without culling/stipple/etc */
+   void *rasterizer_no_cull[2][2];
+
    struct pipe_viewport_state viewport;
    boolean identity_viewport;
 
@@ -345,5 +353,10 @@ void draw_do_flush( struct draw_context *draw, unsigned flags );
 
 
 
+void *
+draw_get_rasterizer_no_cull( struct draw_context *draw,
+                             boolean scissor,
+                             boolean flatshade );
+
 
 #endif /* DRAW_PRIVATE_H */
-- 
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