llvmpipe: Simplify vertex and geometry shaders.

Eliminate lp_vertex_shader, as it added nothing over draw_vertex_shader.

Simplify lp_geometry_shader, as most of the incoming state is unneeded.
(We could also just use draw_geometry_shader if we were willing to peek
inside the structure.)

Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Reviewed-by: Zack Rusin <zackr@vmware.com>

src/gallium/drivers/llvmpipe/lp_context.h

@@ -46,8 +46,8 @@
 struct llvmpipe_vbuf_render;
 struct draw_context;
 struct draw_stage;
+struct draw_vertex_shader;
 struct lp_fragment_shader;
-struct lp_vertex_shader;
 struct lp_blend_state;
 struct lp_setup_context;
 struct lp_setup_variant;
@@ -63,7 +63,7 @@ struct llvmpipe_context {
    const struct pipe_depth_stencil_alpha_state *depth_stencil;
    const struct pipe_rasterizer_state *rasterizer;
    struct lp_fragment_shader *fs;
-   const struct lp_vertex_shader *vs;
+   struct draw_vertex_shader *vs;
    const struct lp_geometry_shader *gs;
    const struct lp_velems_state *velems;
    const struct lp_so_state *so;

src/gallium/drivers/llvmpipe/lp_draw_arrays.c

@@ -112,11 +112,11 @@ llvmpipe_draw_vbo(struct pipe_context *pipe, const struct pipe_draw_info *info)
    llvmpipe_prepare_geometry_sampling(lp,
                                       lp->num_sampler_views[PIPE_SHADER_GEOMETRY],
                                       lp->sampler_views[PIPE_SHADER_GEOMETRY]);
-   if (lp->gs && !lp->gs->shader.tokens) {
+   if (lp->gs && lp->gs->no_tokens) {
       /* we have an empty geometry shader with stream output, so
          attach the stream output info to the current vertex shader */
       if (lp->vs) {
-         draw_vs_attach_so(lp->vs->draw_data, &lp->gs->shader.stream_output);
+         draw_vs_attach_so(lp->vs, &lp->gs->stream_output);
       }
    }
    draw_collect_pipeline_statistics(draw,
@@ -136,11 +136,11 @@ llvmpipe_draw_vbo(struct pipe_context *pipe, const struct pipe_draw_info *info)
    }
    draw_set_mapped_so_targets(draw, 0, NULL);
 
-   if (lp->gs && !lp->gs->shader.tokens) {
+   if (lp->gs && lp->gs->no_tokens) {
       /* we have attached stream output to the vs for rendering,
          now lets reset it */
       if (lp->vs) {
-         draw_vs_reset_so(lp->vs->draw_data);
+         draw_vs_reset_so(lp->vs);
       }
    }
    

src/gallium/drivers/llvmpipe/lp_state.h

@@ -65,17 +65,10 @@ struct llvmpipe_context;
 
 
 
-/** Subclass of pipe_shader_state */
-struct lp_vertex_shader
-{
-   struct pipe_shader_state shader;
-   struct draw_vertex_shader *draw_data;
-};
-
-/** Subclass of pipe_shader_state */
 struct lp_geometry_shader {
-   struct pipe_shader_state shader;
-   struct draw_geometry_shader *draw_data;
+   boolean no_tokens;
+   struct pipe_stream_output_info stream_output;
+   struct draw_geometry_shader *dgs;
 };
 
 /** Vertex element state */

src/gallium/drivers/llvmpipe/lp_state_gs.c

@@ -48,7 +48,7 @@ llvmpipe_create_gs_state(struct pipe_context *pipe,
 
    state = CALLOC_STRUCT(lp_geometry_shader);
    if (state == NULL )
-      goto fail;
+      goto no_state;
 
    /* debug */
    if (LP_DEBUG & DEBUG_TGSI) {
@@ -57,26 +57,19 @@ llvmpipe_create_gs_state(struct pipe_context *pipe,
    }
 
    /* copy stream output info */
-   state->shader = *templ;
-   if (templ->tokens) {
-      /* copy shader tokens, the ones passed in will go away. */
-      state->shader.tokens = tgsi_dup_tokens(templ->tokens);
-      if (state->shader.tokens == NULL)
-         goto fail;
+   state->no_tokens = !templ->tokens;
+   memcpy(&state->stream_output, &templ->stream_output, sizeof state->stream_output);
 
-      state->draw_data = draw_create_geometry_shader(llvmpipe->draw, templ);
-      if (state->draw_data == NULL)
-         goto fail;
+   state->dgs = draw_create_geometry_shader(llvmpipe->draw, templ);
+   if (state->dgs == NULL) {
+      goto no_dgs;
    }
 
    return state;
 
-fail:
-   if (state) {
-      FREE( (void *)state->shader.tokens );
-      FREE( state->draw_data );
-      FREE( state );
-   }
+no_dgs:
+   FREE( state );
+no_state:
    return NULL;
 }
 
@@ -89,7 +82,7 @@ llvmpipe_bind_gs_state(struct pipe_context *pipe, void *gs)
    llvmpipe->gs = (struct lp_geometry_shader *)gs;
 
    draw_bind_geometry_shader(llvmpipe->draw,
-                             (llvmpipe->gs ? llvmpipe->gs->draw_data : NULL));
+                             (llvmpipe->gs ? llvmpipe->gs->dgs : NULL));
 
    llvmpipe->dirty |= LP_NEW_GS;
 }
@@ -107,8 +100,7 @@ llvmpipe_delete_gs_state(struct pipe_context *pipe, void *gs)
       return;
    }
 
-   draw_delete_geometry_shader(llvmpipe->draw, state->draw_data);
-   FREE( (void *)state->shader.tokens );
+   draw_delete_geometry_shader(llvmpipe->draw, state->dgs);
    FREE(state);
 }
 

src/gallium/drivers/llvmpipe/lp_state_vs.c

@@ -43,36 +43,19 @@ llvmpipe_create_vs_state(struct pipe_context *pipe,
                          const struct pipe_shader_state *templ)
 {
    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
-   struct lp_vertex_shader *state;
+   struct draw_vertex_shader *vs;
 
-   state = CALLOC_STRUCT(lp_vertex_shader);
-   if (state == NULL ) 
-      goto fail;
-
-   /* copy shader tokens, the ones passed in will go away.
-    */
-   state->shader.tokens = tgsi_dup_tokens(templ->tokens);
-   if (state->shader.tokens == NULL)
-      goto fail;
-
-   state->draw_data = draw_create_vertex_shader(llvmpipe->draw, templ);
-   if (state->draw_data == NULL) 
-      goto fail;
+   vs = draw_create_vertex_shader(llvmpipe->draw, templ);
+   if (vs == NULL) {
+      return NULL;
+   }
 
    if (LP_DEBUG & DEBUG_TGSI) {
-      debug_printf("llvmpipe: Create vertex shader %p:\n", (void *) state);
+      debug_printf("llvmpipe: Create vertex shader %p:\n", (void *) vs);
       tgsi_dump(templ->tokens, 0);
    }
 
-   return state;
-
-fail:
-   if (state) {
-      FREE( (void *)state->shader.tokens );
-      FREE( state->draw_data );
-      FREE( state );
-   }
-   return NULL;
+   return vs;
 }
 
 
@@ -80,13 +63,12 @@ static void
 llvmpipe_bind_vs_state(struct pipe_context *pipe, void *_vs)
 {
    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
-   const struct lp_vertex_shader *vs = (const struct lp_vertex_shader *)_vs;
+   struct draw_vertex_shader *vs = (struct draw_vertex_shader *)_vs;
 
    if (llvmpipe->vs == vs)
       return;
 
-   draw_bind_vertex_shader(llvmpipe->draw, 
-                           vs ? vs->draw_data : NULL);
+   draw_bind_vertex_shader(llvmpipe->draw, vs);
 
    llvmpipe->vs = vs;
 
@@ -95,16 +77,12 @@ llvmpipe_bind_vs_state(struct pipe_context *pipe, void *_vs)
 
 
 static void
-llvmpipe_delete_vs_state(struct pipe_context *pipe, void *vs)
+llvmpipe_delete_vs_state(struct pipe_context *pipe, void *_vs)
 {
    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
+   struct draw_vertex_shader *vs = (struct draw_vertex_shader *)_vs;
 
-   struct lp_vertex_shader *state =
-      (struct lp_vertex_shader *)vs;
-
-   draw_delete_vertex_shader(llvmpipe->draw, state->draw_data);
-   FREE( (void *)state->shader.tokens );
-   FREE( state );
+   draw_delete_vertex_shader(llvmpipe->draw, vs);
 }