llvmpipe: remove old prim_setup draw stage

Everything now goes through the draw_vbuf handler, the same as
regular drivers.

Based on Keith's commit 4fe0fc3eba1f79beda890a5016359d549bab6ad4.

10 files changed, 59 insertions, 386 deletions

diff --git a/src/gallium/drivers/llvmpipe/Makefile b/src/gallium/drivers/llvmpipe/Makefile
index cdf318844cc..e038a5229e5 100644
--- a/src/gallium/drivers/llvmpipe/Makefile
+++ b/src/gallium/drivers/llvmpipe/Makefile
@@ -35,7 +35,6 @@ C_SOURCES = \
 	lp_draw_arrays.c \
 	lp_flush.c \
 	lp_jit.c \
-	lp_prim_setup.c \
 	lp_prim_vbuf.c \
 	lp_setup.c \
 	lp_query.c \
diff --git a/src/gallium/drivers/llvmpipe/SConscript b/src/gallium/drivers/llvmpipe/SConscript
index f4410f82019..3bd2e700138 100644
--- a/src/gallium/drivers/llvmpipe/SConscript
+++ b/src/gallium/drivers/llvmpipe/SConscript
@@ -49,7 +49,6 @@ llvmpipe = env.ConvenienceLibrary(
 		'lp_draw_arrays.c',
 		'lp_flush.c',
 		'lp_jit.c',
-		'lp_prim_setup.c',
 		'lp_prim_vbuf.c',
 		'lp_setup.c',
 		'lp_query.c',
diff --git a/src/gallium/drivers/llvmpipe/lp_context.c b/src/gallium/drivers/llvmpipe/lp_context.c
index 202cb8ef439..57e71f3e986 100644
--- a/src/gallium/drivers/llvmpipe/lp_context.c
+++ b/src/gallium/drivers/llvmpipe/lp_context.c
@@ -31,13 +31,13 @@
  */
 
 #include "draw/draw_context.h"
+#include "draw/draw_vbuf.h"
 #include "pipe/p_defines.h"
 #include "util/u_math.h"
 #include "util/u_memory.h"
 #include "lp_clear.h"
 #include "lp_context.h"
 #include "lp_flush.h"
-#include "lp_prim_setup.h"
 #include "lp_prim_vbuf.h"
 #include "lp_state.h"
 #include "lp_surface.h"
@@ -264,21 +264,21 @@ llvmpipe_create( struct pipe_screen *screen )
                          (struct tgsi_sampler **)
                             llvmpipe->tgsi.vert_samplers_list);
 
-   llvmpipe->setup = lp_draw_render_stage(llvmpipe);
-   if (!llvmpipe->setup)
-      goto fail;
-
    if (debug_get_bool_option( "LP_NO_RAST", FALSE ))
       llvmpipe->no_rast = TRUE;
 
-   if (debug_get_bool_option( "LP_NO_VBUF", FALSE )) {
-      /* Deprecated path -- vbuf is the intended interface to the draw module:
-       */
-      draw_set_rasterize_stage(llvmpipe->draw, llvmpipe->setup);
-   }
-   else {
-      lp_init_vbuf(llvmpipe);
-   }
+   llvmpipe->vbuf_backend = lp_create_vbuf_backend(llvmpipe);
+   if (!llvmpipe->vbuf_backend)
+      goto fail;
+
+   llvmpipe->vbuf = draw_vbuf_stage(llvmpipe->draw, llvmpipe->vbuf_backend);
+   if (!llvmpipe->vbuf)
+      goto fail;
+
+   draw_set_rasterize_stage(llvmpipe->draw, llvmpipe->vbuf);
+   draw_set_render(llvmpipe->draw, llvmpipe->vbuf_backend);
+
+
 
    /* plug in AA line/point stages */
    draw_install_aaline_stage(llvmpipe->draw, &llvmpipe->pipe);
diff --git a/src/gallium/drivers/llvmpipe/lp_context.h b/src/gallium/drivers/llvmpipe/lp_context.h
index 7df340554e0..3ad95d0bfc2 100644
--- a/src/gallium/drivers/llvmpipe/lp_context.h
+++ b/src/gallium/drivers/llvmpipe/lp_context.h
@@ -121,9 +121,10 @@ struct llvmpipe_context {
 
    /** The primitive drawing context */
    struct draw_context *draw;
-   struct draw_stage *setup;
+
+   /** Draw module backend */
+   struct vbuf_render *vbuf_backend;
    struct draw_stage *vbuf;
-   struct llvmpipe_vbuf_render *vbuf_render;
 
    boolean dirty_render_cache;
    
diff --git a/src/gallium/drivers/llvmpipe/lp_prim_setup.c b/src/gallium/drivers/llvmpipe/lp_prim_setup.c
deleted file mode 100644
index b14f8fb99d9..00000000000
--- a/src/gallium/drivers/llvmpipe/lp_prim_setup.c
+++ /dev/null
@@ -1,190 +0,0 @@
-/**************************************************************************
- * 
- * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
- * All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the
- * "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sub license, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- * 
- * The above copyright notice and this permission notice (including the
- * next paragraph) shall be included in all copies or substantial portions
- * of the Software.
- * 
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
- * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
- * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
- * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
- * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- * 
- **************************************************************************/
-
-/**
- * \brief A draw stage that drives our triangle setup routines from
- * within the draw pipeline.  One of two ways to drive setup, the
- * other being in lp_prim_vbuf.c.
- *
- * \author  Keith Whitwell <[email protected]>
- * \author  Brian Paul
- */
-
-
-#include "lp_context.h"
-#include "lp_setup.h"
-#include "lp_state.h"
-#include "lp_prim_setup.h"
-#include "draw/draw_pipe.h"
-#include "draw/draw_vertex.h"
-#include "util/u_memory.h"
-
-/**
- * Triangle setup info (derived from draw_stage).
- * Also used for line drawing (taking some liberties).
- */
-struct setup_stage {
-   struct draw_stage stage; /**< This must be first (base class) */
-
-   struct setup_context *setup;
-};
-
-
-
-/**
- * Basically a cast wrapper.
- */
-static INLINE struct setup_stage *setup_stage( struct draw_stage *stage )
-{
-   return (struct setup_stage *)stage;
-}
-
-
-typedef const float (*cptrf4)[4];
-
-static void
-do_tri(struct draw_stage *stage, struct prim_header *prim)
-{
-   struct setup_stage *setup = setup_stage( stage );
-   
-   llvmpipe_setup_tri( setup->setup,
-              (cptrf4)prim->v[0]->data,
-              (cptrf4)prim->v[1]->data,
-              (cptrf4)prim->v[2]->data );
-}
-
-static void
-do_line(struct draw_stage *stage, struct prim_header *prim)
-{
-   struct setup_stage *setup = setup_stage( stage );
-
-   llvmpipe_setup_line( setup->setup,
-               (cptrf4)prim->v[0]->data,
-               (cptrf4)prim->v[1]->data );
-}
-
-static void
-do_point(struct draw_stage *stage, struct prim_header *prim)
-{
-   struct setup_stage *setup = setup_stage( stage );
-
-   llvmpipe_setup_point( setup->setup,
-                (cptrf4)prim->v[0]->data );
-}
-
-
-
-
-static void setup_begin( struct draw_stage *stage )
-{
-   struct setup_stage *setup = setup_stage(stage);
-
-   llvmpipe_setup_prepare( setup->setup );
-
-   stage->point = do_point;
-   stage->line = do_line;
-   stage->tri = do_tri;
-}
-
-
-static void setup_first_point( struct draw_stage *stage,
-			       struct prim_header *header )
-{
-   setup_begin(stage);
-   stage->point( stage, header );
-}
-
-static void setup_first_line( struct draw_stage *stage,
-			       struct prim_header *header )
-{
-   setup_begin(stage);
-   stage->line( stage, header );
-}
-
-
-static void setup_first_tri( struct draw_stage *stage,
-			       struct prim_header *header )
-{
-   setup_begin(stage);
-   stage->tri( stage, header );
-}
-
-
-
-static void setup_flush( struct draw_stage *stage,
-			 unsigned flags )
-{
-   stage->point = setup_first_point;
-   stage->line = setup_first_line;
-   stage->tri = setup_first_tri;
-}
-
-
-static void reset_stipple_counter( struct draw_stage *stage )
-{
-}
-
-
-static void render_destroy( struct draw_stage *stage )
-{
-   struct setup_stage *ssetup = setup_stage(stage);
-   llvmpipe_setup_destroy_context(ssetup->setup);
-   FREE( stage );
-}
-
-
-/**
- * Create a new primitive setup/render stage.
- */
-struct draw_stage *lp_draw_render_stage( struct llvmpipe_context *llvmpipe )
-{
-   struct setup_stage *sstage = CALLOC_STRUCT(setup_stage);
-
-   sstage->setup = llvmpipe_setup_create_context(llvmpipe);
-   sstage->stage.draw = llvmpipe->draw;
-   sstage->stage.point = setup_first_point;
-   sstage->stage.line = setup_first_line;
-   sstage->stage.tri = setup_first_tri;
-   sstage->stage.flush = setup_flush;
-   sstage->stage.reset_stipple_counter = reset_stipple_counter;
-   sstage->stage.destroy = render_destroy;
-
-   return (struct draw_stage *)sstage;
-}
-
-struct setup_context *
-lp_draw_setup_context( struct draw_stage *stage )
-{
-   struct setup_stage *ssetup = setup_stage(stage);
-   return ssetup->setup;
-}
-
-void
-lp_draw_flush( struct draw_stage *stage )
-{
-   stage->flush( stage, 0 );
-}
diff --git a/src/gallium/drivers/llvmpipe/lp_prim_setup.h b/src/gallium/drivers/llvmpipe/lp_prim_setup.h
deleted file mode 100644
index da6cae63751..00000000000
--- a/src/gallium/drivers/llvmpipe/lp_prim_setup.h
+++ /dev/null
@@ -1,85 +0,0 @@
-/**************************************************************************
- * 
- * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
- * All Rights Reserved.
- * 
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the
- * "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sub license, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- * 
- * The above copyright notice and this permission notice (including the
- * next paragraph) shall be included in all copies or substantial portions
- * of the Software.
- * 
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
- * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
- * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
- * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
- * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- * 
- **************************************************************************/
-
-
-#ifndef LP_PRIM_SETUP_H
-#define LP_PRIM_SETUP_H
-
-
-/**
- * vbuf is a special stage to gather the stream of triangles, lines, points
- * together and reconstruct vertex buffers for hardware upload.
- *
- * First attempt, work in progress.
- * 
- * TODO:
- *    - separate out vertex buffer building and primitive emit, ie >1 draw per vb.
- *    - tell vbuf stage how to build hw vertices directly
- *    - pass vbuf stage a buffer pointer for direct emit to agp/vram.
- *
- *
- *
- * Vertices are just an array of floats, with all the attributes
- * packed.  We currently assume a layout like:
- *
- * attr[0][0..3] - window position
- * attr[1..n][0..3] - remaining attributes.
- *
- * Attributes are assumed to be 4 floats wide but are packed so that
- * all the enabled attributes run contiguously.
- */
-
-
-struct draw_stage;
-struct llvmpipe_context;
-
-
-typedef void (*vbuf_draw_func)( struct pipe_context *pipe,
-                                unsigned prim,
-                                const ushort *elements,
-                                unsigned nr_elements,
-                                const void *vertex_buffer,
-                                unsigned nr_vertices );
-
-
-extern struct draw_stage *
-lp_draw_render_stage( struct llvmpipe_context *llvmpipe );
-
-extern struct setup_context *
-lp_draw_setup_context( struct draw_stage * );
-
-extern void
-lp_draw_flush( struct draw_stage * );
-
-
-extern struct draw_stage *
-lp_draw_vbuf_stage( struct draw_context *draw_context,
-                    struct pipe_context *pipe,
-                    vbuf_draw_func draw );
-
-
-#endif /* LP_PRIM_SETUP_H */
diff --git a/src/gallium/drivers/llvmpipe/lp_prim_vbuf.c b/src/gallium/drivers/llvmpipe/lp_prim_vbuf.c
index c394dcb61d0..4abff4ecccc 100644
--- a/src/gallium/drivers/llvmpipe/lp_prim_vbuf.c
+++ b/src/gallium/drivers/llvmpipe/lp_prim_vbuf.c
@@ -37,10 +37,9 @@
 
 
 #include "lp_context.h"
+#include "lp_setup.h"
 #include "lp_state.h"
 #include "lp_prim_vbuf.h"
-#include "lp_prim_setup.h"
-#include "lp_setup.h"
 #include "draw/draw_context.h"
 #include "draw/draw_vbuf.h"
 #include "util/u_memory.h"
@@ -59,6 +58,8 @@ struct llvmpipe_vbuf_render
 {
    struct vbuf_render base;
    struct llvmpipe_context *llvmpipe;
+   struct setup_context *setup;
+
    uint prim;
    uint vertex_size;
    uint nr_vertices;
@@ -75,6 +76,11 @@ llvmpipe_vbuf_render(struct vbuf_render *vbr)
 }
 
 
+
+
+
+
+
 static const struct vertex_info *
 lp_vbuf_get_vertex_info(struct vbuf_render *vbr)
 {
@@ -105,36 +111,6 @@ lp_vbuf_allocate_vertices(struct vbuf_render *vbr,
 static void
 lp_vbuf_release_vertices(struct vbuf_render *vbr)
 {
-#if 0
-   {
-      struct llvmpipe_vbuf_render *cvbr = llvmpipe_vbuf_render(vbr);
-      const struct vertex_info *info = 
-         llvmpipe_get_vbuf_vertex_info(cvbr->llvmpipe);
-      const float *vtx = (const float *) cvbr->vertex_buffer;
-      uint i, j;
-      debug_printf("%s (vtx_size = %u,  vtx_used = %u)\n",
-             __FUNCTION__, cvbr->vertex_size, cvbr->nr_vertices);
-      for (i = 0; i < cvbr->nr_vertices; i++) {
-         for (j = 0; j < info->num_attribs; j++) {
-            uint k;
-            switch (info->attrib[j].emit) {
-            case EMIT_4F:  k = 4;   break;
-            case EMIT_3F:  k = 3;   break;
-            case EMIT_2F:  k = 2;   break;
-            case EMIT_1F:  k = 1;   break;
-            default: assert(0);
-            }
-            debug_printf("Vert %u attr %u: ", i, j);
-            while (k-- > 0) {
-               debug_printf("%g ", vtx[0]);
-               vtx++;
-            }
-            debug_printf("\n");
-         }
-      }
-   }
-#endif
-
    /* keep the old allocation for next time */
 }
 
@@ -160,11 +136,7 @@ static boolean
 lp_vbuf_set_primitive(struct vbuf_render *vbr, unsigned prim)
 {
    struct llvmpipe_vbuf_render *cvbr = llvmpipe_vbuf_render(vbr);
-
-   /* XXX: break this dependency - make setup_context live under
-    * llvmpipe, rename the old "setup" draw stage to something else.
-    */
-   struct setup_context *setup_ctx = lp_draw_setup_context(cvbr->llvmpipe->setup);
+   struct setup_context *setup_ctx = cvbr->setup;
    
    llvmpipe_setup_prepare( setup_ctx );
 
@@ -193,14 +165,9 @@ lp_vbuf_draw(struct vbuf_render *vbr, const ushort *indices, uint nr)
    struct llvmpipe_context *llvmpipe = cvbr->llvmpipe;
    const unsigned stride = llvmpipe->vertex_info_vbuf.size * sizeof(float);
    const void *vertex_buffer = cvbr->vertex_buffer;
+   struct setup_context *setup_ctx = cvbr->setup;
    unsigned i;
 
-   /* XXX: break this dependency - make setup_context live under
-    * llvmpipe, rename the old "setup" draw stage to something else.
-    */
-   struct draw_stage *setup = llvmpipe->setup;
-   struct setup_context *setup_ctx = lp_draw_setup_context(setup);
-
    switch (cvbr->prim) {
    case PIPE_PRIM_POINTS:
       for (i = 0; i < nr; i++) {
@@ -367,11 +334,6 @@ lp_vbuf_draw(struct vbuf_render *vbr, const ushort *indices, uint nr)
    default:
       assert(0);
    }
-
-   /* XXX: why are we calling this???  If we had to call something, it
-    * would be a function in lp_setup.c:
-    */
-   lp_draw_flush( setup );
 }
 
 
@@ -384,17 +346,12 @@ lp_vbuf_draw_arrays(struct vbuf_render *vbr, uint start, uint nr)
 {
    struct llvmpipe_vbuf_render *cvbr = llvmpipe_vbuf_render(vbr);
    struct llvmpipe_context *llvmpipe = cvbr->llvmpipe;
+   struct setup_context *setup_ctx = cvbr->setup;
    const unsigned stride = llvmpipe->vertex_info_vbuf.size * sizeof(float);
    const void *vertex_buffer =
       (void *) get_vert(cvbr->vertex_buffer, start, stride);
    unsigned i;
 
-   /* XXX: break this dependency - make setup_context live under
-    * llvmpipe, rename the old "setup" draw stage to something else.
-    */
-   struct draw_stage *setup = llvmpipe->setup;
-   struct setup_context *setup_ctx = lp_draw_setup_context(setup);
-
    switch (cvbr->prim) {
    case PIPE_PRIM_POINTS:
       for (i = 0; i < nr; i++) {
@@ -568,40 +525,38 @@ static void
 lp_vbuf_destroy(struct vbuf_render *vbr)
 {
    struct llvmpipe_vbuf_render *cvbr = llvmpipe_vbuf_render(vbr);
-   cvbr->llvmpipe->vbuf_render = NULL;
+   llvmpipe_setup_destroy_context(cvbr->setup);
    FREE(cvbr);
 }
 
 
 /**
- * Initialize the post-transform vertex buffer information for the given
- * context.
+ * Create the post-transform vertex handler for the given context.
  */
-void
-lp_init_vbuf(struct llvmpipe_context *lp)
+struct vbuf_render *
+lp_create_vbuf_backend(struct llvmpipe_context *lp)
 {
-   assert(lp->draw);
+   struct llvmpipe_vbuf_render *cvbr = CALLOC_STRUCT(llvmpipe_vbuf_render);
 
-   lp->vbuf_render = CALLOC_STRUCT(llvmpipe_vbuf_render);
+   assert(lp->draw);
 
-   lp->vbuf_render->base.max_indices = LP_MAX_VBUF_INDEXES;
-   lp->vbuf_render->base.max_vertex_buffer_bytes = LP_MAX_VBUF_SIZE;
 
-   lp->vbuf_render->base.get_vertex_info = lp_vbuf_get_vertex_info;
-   lp->vbuf_render->base.allocate_vertices = lp_vbuf_allocate_vertices;
-   lp->vbuf_render->base.map_vertices = lp_vbuf_map_vertices;
-   lp->vbuf_render->base.unmap_vertices = lp_vbuf_unmap_vertices;
-   lp->vbuf_render->base.set_primitive = lp_vbuf_set_primitive;
-   lp->vbuf_render->base.draw = lp_vbuf_draw;
-   lp->vbuf_render->base.draw_arrays = lp_vbuf_draw_arrays;
-   lp->vbuf_render->base.release_vertices = lp_vbuf_release_vertices;
-   lp->vbuf_render->base.destroy = lp_vbuf_destroy;
+   cvbr->base.max_indices = LP_MAX_VBUF_INDEXES;
+   cvbr->base.max_vertex_buffer_bytes = LP_MAX_VBUF_SIZE;
 
-   lp->vbuf_render->llvmpipe = lp;
+   cvbr->base.get_vertex_info = lp_vbuf_get_vertex_info;
+   cvbr->base.allocate_vertices = lp_vbuf_allocate_vertices;
+   cvbr->base.map_vertices = lp_vbuf_map_vertices;
+   cvbr->base.unmap_vertices = lp_vbuf_unmap_vertices;
+   cvbr->base.set_primitive = lp_vbuf_set_primitive;
+   cvbr->base.draw = lp_vbuf_draw;
+   cvbr->base.draw_arrays = lp_vbuf_draw_arrays;
+   cvbr->base.release_vertices = lp_vbuf_release_vertices;
+   cvbr->base.destroy = lp_vbuf_destroy;
 
-   lp->vbuf = draw_vbuf_stage(lp->draw, &lp->vbuf_render->base);
+   cvbr->llvmpipe = lp;
 
-   draw_set_rasterize_stage(lp->draw, lp->vbuf);
+   cvbr->setup = llvmpipe_setup_create_context(cvbr->llvmpipe);
 
-   draw_set_render(lp->draw, &lp->vbuf_render->base);
+   return &cvbr->base;
 }
diff --git a/src/gallium/drivers/llvmpipe/lp_prim_vbuf.h b/src/gallium/drivers/llvmpipe/lp_prim_vbuf.h
index 6c4e6063e6d..0676e2f42ac 100644
--- a/src/gallium/drivers/llvmpipe/lp_prim_vbuf.h
+++ b/src/gallium/drivers/llvmpipe/lp_prim_vbuf.h
@@ -31,8 +31,8 @@
 
 struct llvmpipe_context;
 
-extern void
-lp_init_vbuf(struct llvmpipe_context *llvmpipe);
+extern struct vbuf_render *
+lp_create_vbuf_backend(struct llvmpipe_context *llvmpipe);
 
 
 #endif /* LP_VBUF_H */
diff --git a/src/gallium/drivers/llvmpipe/lp_setup.c b/src/gallium/drivers/llvmpipe/lp_setup.c
index 11ebfa02360..ffcbc9a379f 100644
--- a/src/gallium/drivers/llvmpipe/lp_setup.c
+++ b/src/gallium/drivers/llvmpipe/lp_setup.c
@@ -33,7 +33,6 @@
  */
 
 #include "lp_context.h"
-#include "lp_prim_setup.h"
 #include "lp_quad.h"
 #include "lp_setup.h"
 #include "lp_state.h"
diff --git a/src/gallium/drivers/llvmpipe/lp_state_derived.c b/src/gallium/drivers/llvmpipe/lp_state_derived.c
index 30fb41ea65d..31eaadda216 100644
--- a/src/gallium/drivers/llvmpipe/lp_state_derived.c
+++ b/src/gallium/drivers/llvmpipe/lp_state_derived.c
@@ -67,24 +67,19 @@ llvmpipe_get_vertex_info(struct llvmpipe_context *llvmpipe)
       const struct lp_fragment_shader *lpfs = llvmpipe->fs;
       const enum interp_mode colorInterp
          = llvmpipe->rasterizer->flatshade ? INTERP_CONSTANT : INTERP_LINEAR;
+      struct vertex_info *vinfo_vbuf = &llvmpipe->vertex_info_vbuf;
+      const uint num = draw_num_vs_outputs(llvmpipe->draw);
       uint i;
 
-      if (llvmpipe->vbuf) {
-         /* if using the post-transform vertex buffer, tell draw_vbuf to
-          * simply emit the whole post-xform vertex as-is:
-          */
-         struct vertex_info *vinfo_vbuf = &llvmpipe->vertex_info_vbuf;
-         const uint num = draw_num_vs_outputs(llvmpipe->draw);
-         uint i;
-
-         /* No longer any need to try and emit draw vertex_header info.
-          */
-         vinfo_vbuf->num_attribs = 0;
-         for (i = 0; i < num; i++) {
-            draw_emit_vertex_attr(vinfo_vbuf, EMIT_4F, INTERP_PERSPECTIVE, i);
-         }
-         draw_compute_vertex_size(vinfo_vbuf);
+      /* Tell draw_vbuf to simply emit the whole post-xform vertex
+       * as-is.  No longer any need to try and emit draw vertex_header
+       * info.
+       */
+      vinfo_vbuf->num_attribs = 0;
+      for (i = 0; i < num; i++) {
+	 draw_emit_vertex_attr(vinfo_vbuf, EMIT_4F, INTERP_PERSPECTIVE, i);
       }
+      draw_compute_vertex_size(vinfo_vbuf);
 
       /*
        * Loop over fragment shader inputs, searching for the matching output