gallium: Remove feedback interfaces from pipe driver.

Something similar will return when geometry shaders are added, but for now
this interface is not required.

5 files changed, 0 insertions, 294 deletions

diff --git a/src/mesa/pipe/draw/draw_context.c b/src/mesa/pipe/draw/draw_context.c
index 33727e6547c..179f7ed0d67 100644
--- a/src/mesa/pipe/draw/draw_context.c
+++ b/src/mesa/pipe/draw/draw_context.c
@@ -55,7 +55,6 @@ struct draw_context *draw_create( void )
    draw->pipeline.clip      = draw_clip_stage( draw );
    draw->pipeline.flatshade = draw_flatshade_stage( draw );
    draw->pipeline.cull      = draw_cull_stage( draw );
-   draw->pipeline.feedback  = draw_feedback_stage( draw );
    draw->pipeline.validate  = draw_validate_stage( draw );
    draw->pipeline.first     = draw->pipeline.validate;
 
@@ -100,7 +99,6 @@ void draw_destroy( struct draw_context *draw )
    draw->pipeline.clip->destroy( draw->pipeline.clip );
    draw->pipeline.flatshade->destroy( draw->pipeline.flatshade );
    draw->pipeline.cull->destroy( draw->pipeline.cull );
-   draw->pipeline.feedback->destroy( draw->pipeline.feedback );
    draw->pipeline.validate->destroy( draw->pipeline.validate );
    if (draw->pipeline.rasterize)
       draw->pipeline.rasterize->destroy( draw->pipeline.rasterize );
@@ -117,13 +115,6 @@ void draw_flush( struct draw_context *draw )
 }
 
 
-void draw_set_feedback_state( struct draw_context *draw,
-                              const struct pipe_feedback_state *feedback )
-{
-   draw_flush( draw );
-   draw->feedback = *feedback;
-}
-
 
 /**
  * Register new primitive rasterization/rendering state.
@@ -223,18 +214,6 @@ draw_set_mapped_constant_buffer(struct draw_context *draw,
 }
 
 
-void
-draw_set_mapped_feedback_buffer(struct draw_context *draw, uint index,
-                                void *buffer, uint size)
-{
-   draw_flush( draw );
-
-   assert(index < PIPE_MAX_FEEDBACK_ATTRIBS);
-   draw->user.feedback_buffer[index] = buffer;
-   draw->user.feedback_buffer_size[index] = size; /* in bytes */
-}
-
-
 
 
 
diff --git a/src/mesa/pipe/draw/draw_context.h b/src/mesa/pipe/draw/draw_context.h
index 8e2232244cc..6dc6e4ce82a 100644
--- a/src/mesa/pipe/draw/draw_context.h
+++ b/src/mesa/pipe/draw/draw_context.h
@@ -82,9 +82,6 @@ void draw_set_viewport_state( struct draw_context *draw,
 void draw_set_clip_state( struct draw_context *pipe,
                           const struct pipe_clip_state *clip );
 
-void draw_set_feedback_state( struct draw_context *draw,
-                              const struct pipe_feedback_state * );
-
 void draw_set_rasterizer_state( struct draw_context *draw,
                                 const struct pipe_rasterizer_state *raster );
 
@@ -120,9 +117,6 @@ void draw_set_mapped_vertex_buffer(struct draw_context *draw,
 void draw_set_mapped_constant_buffer(struct draw_context *draw,
                                      const void *buffer);
 
-void
-draw_set_mapped_feedback_buffer(struct draw_context *draw, uint index,
-                                void *buffer, uint size);
 
 
 /***********************************************************************
diff --git a/src/mesa/pipe/draw/draw_feedback.c b/src/mesa/pipe/draw/draw_feedback.c
deleted file mode 100644
index aea6a8184c0..00000000000
--- a/src/mesa/pipe/draw/draw_feedback.c
+++ /dev/null
@@ -1,253 +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.
- * 
- **************************************************************************/
-
-/**
- * Primitive/vertex feedback (and/or discard) stage.
- * Used to implement transformation feedback/streaming and other things
- * which require a post-transformed vertex position (such as rasterpos,
- * selection and feedback modes).
- *
- * Authors:
- *  Brian Paul
- */
-
-
-#include "pipe/p_util.h"
-#include "draw_private.h"
-
-
-struct feedback_stage {
-   struct draw_stage stage;      /**< base class */
-   uint num_prim_generated;      /**< number of primitives received */
-   uint num_prim_emitted;        /**< number of primitives fed back */
-   uint num_vert_emitted;        /**< number of vertices fed back */
-   uint max_vert_emit;           /**< max number of verts we can emit */
-   float *dest[PIPE_MAX_FEEDBACK_ATTRIBS];  /**< dests for vertex attribs */
-};
-
-
-
-/**
- * Check if there's space to store 'numVerts' in the feedback buffer(s).
- */
-static boolean
-check_space(const struct draw_stage *stage, uint numVerts)
-{
-   const struct feedback_stage *fs = (struct feedback_stage *) stage;
-   return fs->num_vert_emitted + numVerts <= fs->max_vert_emit;
-}
-
-
-/**
- * Record the given vertex's attributes into the feedback buffer(s).
- */
-static void
-feedback_vertex(struct draw_stage *stage, const struct vertex_header *vertex)
-{
-   struct feedback_stage *fs = (struct feedback_stage *) stage;
-   const struct pipe_feedback_state *feedback = &stage->draw->feedback;
-   const uint select = feedback->interleaved ? 0 : 1;
-   uint i;
-
-   /*
-    * Note: 'select' is either 0 or 1.  By multiplying 'i' by 'select'
-    * we can either address output buffer 0 (for interleaving) or
-    * output buffer i (for non-interleaved).
-    */
-   for (i = 0; i < feedback->num_attribs; i++) {
-      const uint slot = feedback->attrib[i];
-      const float *src = slot ? vertex->data[slot] : vertex->clip;
-      const uint size = feedback->size[i];
-      float *dest = fs->dest[i * select];
-
-      switch (size) {
-      case 4:
-         dest[3] = src[3];
-         /* fall-through */
-      case 3:
-         dest[2] = src[2];
-         /* fall-through */
-      case 2:
-         dest[1] = src[1];
-         /* fall-through */
-      case 1:
-         dest[0] = src[0];
-         /* fall-through */
-      default:
-         ;
-      }
-      fs->dest[i * select] += size;
-   }
-
-   fs->num_vert_emitted++;
-}
-
-
-static void feedback_begin( struct draw_stage *stage )
-{
-   struct feedback_stage *fs = (struct feedback_stage *) stage;
-   const struct pipe_feedback_state *feedback = &stage->draw->feedback;
-
-   fs->num_prim_generated = 0;
-   fs->num_prim_emitted = 0;
-   fs->num_vert_emitted = 0;
-
-   assert(feedback->enabled);
-
-   /* Compute max_vert_emit, the max number of vertices we can emit.
-    * And, setup dest[] pointers.
-    */
-   if (stage->draw->feedback.interleaved) {
-      uint i, vertex_size = 0;
-      /* compute size of each interleaved vertex, in floats */
-      for (i = 0; i < feedback->num_attribs; i++) {
-         vertex_size += feedback->size[i];
-      }
-      /* compute max number of vertices we can feedback */
-      fs->max_vert_emit = stage->draw->user.feedback_buffer_size[0]
-         / sizeof(float) / vertex_size;
-
-      fs->dest[0] = (float *) stage->draw->user.feedback_buffer[0];
-   }
-   else {
-      uint i;
-      uint max = ~0;
-      for (i = 0; i < feedback->num_attribs; i++) {
-         uint n = stage->draw->user.feedback_buffer_size[i]
-            / sizeof(float) / feedback->size[i];
-         if (n < max)
-            max = n;
-         fs->dest[i] = (float *) stage->draw->user.feedback_buffer[i];
-      }
-      fs->max_vert_emit = max;
-   }
-
-   if (!feedback->discard)
-      stage->next->begin( stage->next );
-}
-
-
-static void feedback_tri( struct draw_stage *stage,
-                          struct prim_header *header )
-{
-   struct feedback_stage *fs = (struct feedback_stage *) stage;
-
-   fs->num_prim_generated++;
-
-   if (stage->draw->feedback.enabled && check_space(stage, 3)) {
-      feedback_vertex(stage, header->v[0]);
-      feedback_vertex(stage, header->v[1]);
-      feedback_vertex(stage, header->v[2]);
-      fs->num_prim_emitted++;
-   }
-
-   if (!stage->draw->feedback.discard)
-      stage->next->tri( stage->next, header );
-}
-
-
-static void feedback_line( struct draw_stage *stage,
-                           struct prim_header *header )
-{
-   struct feedback_stage *fs = (struct feedback_stage *) stage;
-
-   fs->num_prim_generated++;
-
-   if (stage->draw->feedback.enabled && check_space(stage, 2)) {
-      feedback_vertex(stage, header->v[0]);
-      feedback_vertex(stage, header->v[1]);
-      fs->num_prim_emitted++;
-   }
-
-   if (!stage->draw->feedback.discard)
-      stage->next->line( stage->next, header );
-}
-
-
-static void feedback_point( struct draw_stage *stage,
-                            struct prim_header *header )
-{
-   struct feedback_stage *fs = (struct feedback_stage *) stage;
-
-   fs->num_prim_generated++;
-
-   if (stage->draw->feedback.enabled && check_space(stage, 1)) {
-      feedback_vertex(stage, header->v[0]);
-      fs->num_prim_emitted++;
-   }
-
-   if (!stage->draw->feedback.discard)
-      stage->next->point( stage->next, header );
-}
-
-
-static void feedback_end( struct draw_stage *stage )
-{
-
-   /* XXX Unmap the vertex feedback buffers so we can write to them */
-
-
-   if (!stage->draw->feedback.discard)
-      stage->next->end( stage->next );
-}
-
-
-
-static void feedback_reset_stipple_counter( struct draw_stage *stage )
-{
-   if (!stage->draw->feedback.discard)
-      stage->next->reset_stipple_counter( stage->next );
-}
-
-
-static void feedback_destroy( struct draw_stage *stage )
-{
-   FREE( stage );
-}
-
-
-/**
- * Create feedback drawing stage.
- */
-struct draw_stage *draw_feedback_stage( struct draw_context *draw )
-{
-   struct feedback_stage *feedback = CALLOC_STRUCT(feedback_stage);
-
-   feedback->stage.draw = draw;
-   feedback->stage.next = NULL;
-   feedback->stage.begin = feedback_begin;
-   feedback->stage.point = feedback_point;
-   feedback->stage.line = feedback_line;
-   feedback->stage.tri = feedback_tri;
-   feedback->stage.end = feedback_end;
-   feedback->stage.reset_stipple_counter = feedback_reset_stipple_counter;
-   feedback->stage.destroy = feedback_destroy;
-
-   return &feedback->stage;
-}
-
-
diff --git a/src/mesa/pipe/draw/draw_private.h b/src/mesa/pipe/draw/draw_private.h
index ca5ca7b3c90..5f89ac121eb 100644
--- a/src/mesa/pipe/draw/draw_private.h
+++ b/src/mesa/pipe/draw/draw_private.h
@@ -159,7 +159,6 @@ struct draw_context
       struct draw_stage *validate; 
 
       /* stages (in logical order) */
-      struct draw_stage *feedback;
       struct draw_stage *flatshade;
       struct draw_stage *clip;
       struct draw_stage *cull;
@@ -172,13 +171,10 @@ struct draw_context
 
    /* pipe state that we need: */
    const struct pipe_rasterizer_state *rasterizer;
-   struct pipe_feedback_state feedback;
    struct pipe_viewport_state viewport;
    struct pipe_vertex_buffer vertex_buffer[PIPE_ATTRIB_MAX];
    struct pipe_vertex_element vertex_element[PIPE_ATTRIB_MAX];
    const struct draw_vertex_shader *vertex_shader;
-   struct pipe_vertex_buffer feedback_buffer[PIPE_ATTRIB_MAX];
-   struct pipe_vertex_element feedback_element[PIPE_ATTRIB_MAX];
 
    /* user-space vertex data, buffers */
    struct {
@@ -192,10 +188,6 @@ struct draw_context
 
       /** constant buffer (for vertex shader) */
       const void *constants;
-
-      /** The vertex feedback buffer */
-      void *feedback_buffer[PIPE_MAX_FEEDBACK_ATTRIBS];
-      uint feedback_buffer_size[PIPE_MAX_FEEDBACK_ATTRIBS]; /* in bytes */
    } user;
 
    /* Clip derived state:
@@ -257,7 +249,6 @@ struct draw_context
 
 
 
-extern struct draw_stage *draw_feedback_stage( struct draw_context *context );
 extern struct draw_stage *draw_unfilled_stage( struct draw_context *context );
 extern struct draw_stage *draw_twoside_stage( struct draw_context *context );
 extern struct draw_stage *draw_offset_stage( struct draw_context *context );
diff --git a/src/mesa/pipe/draw/draw_validate.c b/src/mesa/pipe/draw/draw_validate.c
index 8ce4a926e22..58cf340281e 100644
--- a/src/mesa/pipe/draw/draw_validate.c
+++ b/src/mesa/pipe/draw/draw_validate.c
@@ -100,11 +100,6 @@ static void validate_begin( struct draw_stage *stage )
       next = draw->pipeline.flatshade;
    }
 
-   if (draw->feedback.enabled || draw->feedback.discard) {
-      draw->pipeline.feedback->next = next;
-      next = draw->pipeline.feedback;
-   }
-
    draw->pipeline.first = next;
    draw->pipeline.first->begin( draw->pipeline.first );
 }