draw: implement vertex texture sampling using llvm

6 files changed, 96 insertions, 4 deletions

diff --git a/src/gallium/drivers/llvmpipe/lp_screen.c b/src/gallium/drivers/llvmpipe/lp_screen.c
index 49b13f464a7..edcab0f8d95 100644
--- a/src/gallium/drivers/llvmpipe/lp_screen.c
+++ b/src/gallium/drivers/llvmpipe/lp_screen.c
@@ -86,7 +86,7 @@ llvmpipe_get_param(struct pipe_screen *screen, enum pipe_cap param)
    case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
       return PIPE_MAX_SAMPLERS;
    case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
-      return 0;
+      return PIPE_MAX_VERTEX_SAMPLERS;
    case PIPE_CAP_MAX_COMBINED_SAMPLERS:
       return PIPE_MAX_SAMPLERS + PIPE_MAX_VERTEX_SAMPLERS;
    case PIPE_CAP_NPOT_TEXTURES:
diff --git a/src/gallium/drivers/llvmpipe/lp_setup.c b/src/gallium/drivers/llvmpipe/lp_setup.c
index 2597fa8f71b..fcb6e06123d 100644
--- a/src/gallium/drivers/llvmpipe/lp_setup.c
+++ b/src/gallium/drivers/llvmpipe/lp_setup.c
@@ -641,7 +641,6 @@ lp_setup_set_fragment_sampler_views(struct lp_setup_context *setup,
             /*
              * XXX: Where should this be unmapped?
              */
-
             struct llvmpipe_screen *screen = llvmpipe_screen(tex->screen);
             struct sw_winsys *winsys = screen->winsys;
             jit_tex->data[0] = winsys->displaytarget_map(winsys, lp_tex->dt,
@@ -658,6 +657,75 @@ lp_setup_set_fragment_sampler_views(struct lp_setup_context *setup,
 
 
 /**
+ * Called during state validation when LP_NEW_SAMPLER_VIEW is set.
+ */
+void
+lp_setup_set_vertex_sampler_views(struct lp_setup_context *setup,
+                                  unsigned num,
+                                  struct pipe_sampler_view **views)
+{
+   unsigned i;
+   uint32_t row_stride[DRAW_MAX_TEXTURE_LEVELS];
+   uint32_t img_stride[DRAW_MAX_TEXTURE_LEVELS];
+   const void *data[DRAW_MAX_TEXTURE_LEVELS];
+   struct lp_scene *scene;
+   struct llvmpipe_context *lp;
+
+   LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
+
+   assert(num <= PIPE_MAX_VERTEX_SAMPLERS);
+
+   scene = lp_setup_get_current_scene(setup);
+   lp = llvmpipe_context(scene->pipe);
+
+   for (i = 0; i < PIPE_MAX_VERTEX_SAMPLERS; i++) {
+      struct pipe_sampler_view *view = i < num ? views[i] : NULL;
+
+      if (view) {
+         struct pipe_resource *tex = view->texture;
+         struct llvmpipe_resource *lp_tex = llvmpipe_resource(tex);
+
+         /* We're referencing the texture's internal data, so save a
+          * reference to it.
+          */
+         pipe_resource_reference(&setup->vs.current_tex[i], tex);
+
+         if (!lp_tex->dt) {
+            /* regular texture - setup array of mipmap level pointers */
+            int j;
+            for (j = 0; j <= tex->last_level; j++) {
+               data[j] =
+                  llvmpipe_get_texture_image_all(lp_tex, j, LP_TEX_USAGE_READ,
+                                                 LP_TEX_LAYOUT_LINEAR);
+               row_stride[j] = lp_tex->row_stride[j];
+               img_stride[j] = lp_tex->img_stride[j];
+            }
+         }
+         else {
+            /* display target texture/surface */
+            /*
+             * XXX: Where should this be unmapped?
+             */
+            struct llvmpipe_screen *screen = llvmpipe_screen(tex->screen);
+            struct sw_winsys *winsys = screen->winsys;
+            data[0] = winsys->displaytarget_map(winsys, lp_tex->dt,
+                                                PIPE_TRANSFER_READ);
+            row_stride[0] = lp_tex->row_stride[0];
+            img_stride[0] = lp_tex->img_stride[0];
+            assert(data[0]);
+         }
+         draw_set_mapped_texture(lp->draw,
+                                 i,
+                                 tex->width0, tex->height0, tex->depth0,
+                                 tex->last_level,
+                                 row_stride, img_stride, data);
+      }
+   }
+}
+
+
+
+/**
  * Is the given texture referenced by any scene?
  * Note: we have to check all scenes including any scenes currently
  * being rendered and the current scene being built.
@@ -850,6 +918,9 @@ lp_setup_destroy( struct lp_setup_context *setup )
 
    util_unreference_framebuffer_state(&setup->fb);
 
+   for (i = 0; i < Elements(setup->vs.current_tex); i++) {
+      pipe_resource_reference(&setup->vs.current_tex[i], NULL);
+   }
    for (i = 0; i < Elements(setup->fs.current_tex); i++) {
       pipe_resource_reference(&setup->fs.current_tex[i], NULL);
    }
diff --git a/src/gallium/drivers/llvmpipe/lp_setup.h b/src/gallium/drivers/llvmpipe/lp_setup.h
index 6a0dc551290..fd2c927c2ea 100644
--- a/src/gallium/drivers/llvmpipe/lp_setup.h
+++ b/src/gallium/drivers/llvmpipe/lp_setup.h
@@ -133,6 +133,11 @@ lp_setup_set_fragment_sampler_views(struct lp_setup_context *setup,
                                     unsigned num,
                                     struct pipe_sampler_view **views);
 
+void
+lp_setup_set_vertex_sampler_views(struct lp_setup_context *setup,
+                                  unsigned num,
+                                  struct pipe_sampler_view **views);
+
 unsigned
 lp_setup_is_resource_referenced( const struct lp_setup_context *setup,
                                 const struct pipe_resource *texture );
diff --git a/src/gallium/drivers/llvmpipe/lp_setup_context.h b/src/gallium/drivers/llvmpipe/lp_setup_context.h
index 8f4e00f0732..947d5efe2b0 100644
--- a/src/gallium/drivers/llvmpipe/lp_setup_context.h
+++ b/src/gallium/drivers/llvmpipe/lp_setup_context.h
@@ -116,6 +116,10 @@ struct lp_setup_context
       struct pipe_resource *current_tex[PIPE_MAX_SAMPLERS];
    } fs;
 
+   struct {
+      struct pipe_resource *current_tex[PIPE_MAX_VERTEX_SAMPLERS];
+   } vs;
+
    /** fragment shader constants */
    struct {
       struct pipe_resource *current;
diff --git a/src/gallium/drivers/llvmpipe/lp_state_derived.c b/src/gallium/drivers/llvmpipe/lp_state_derived.c
index d20a5218d41..263b1174940 100644
--- a/src/gallium/drivers/llvmpipe/lp_state_derived.c
+++ b/src/gallium/drivers/llvmpipe/lp_state_derived.c
@@ -188,10 +188,14 @@ void llvmpipe_update_derived( struct llvmpipe_context *llvmpipe )
       lp_setup_set_fs_constants(llvmpipe->setup, 
                                 llvmpipe->constants[PIPE_SHADER_FRAGMENT][0]);
 
-   if (llvmpipe->dirty & LP_NEW_SAMPLER_VIEW)
-      lp_setup_set_fragment_sampler_views(llvmpipe->setup, 
+   if (llvmpipe->dirty & LP_NEW_SAMPLER_VIEW) {
+      lp_setup_set_fragment_sampler_views(llvmpipe->setup,
                                           llvmpipe->num_fragment_sampler_views,
                                           llvmpipe->fragment_sampler_views);
+      lp_setup_set_vertex_sampler_views(llvmpipe->setup,
+                                        llvmpipe->num_vertex_sampler_views,
+                                        llvmpipe->vertex_sampler_views);
+   }
 
    llvmpipe->dirty = 0;
 }
diff --git a/src/gallium/drivers/llvmpipe/lp_state_sampler.c b/src/gallium/drivers/llvmpipe/lp_state_sampler.c
index e94065fb6ab..0fea7f20a73 100644
--- a/src/gallium/drivers/llvmpipe/lp_state_sampler.c
+++ b/src/gallium/drivers/llvmpipe/lp_state_sampler.c
@@ -100,6 +100,10 @@ llvmpipe_bind_vertex_sampler_states(struct pipe_context *pipe,
 
    llvmpipe->num_vertex_samplers = num_samplers;
 
+   draw_set_samplers(llvmpipe->draw,
+                     llvmpipe->vertex_samplers,
+                     llvmpipe->num_vertex_samplers);
+
    llvmpipe->dirty |= LP_NEW_SAMPLER;
 }
 
@@ -166,6 +170,10 @@ llvmpipe_set_vertex_sampler_views(struct pipe_context *pipe,
 
    llvmpipe->num_vertex_sampler_views = num;
 
+   draw_set_sampler_views(llvmpipe->draw,
+                          llvmpipe->vertex_sampler_views,
+                          llvmpipe->num_vertex_sampler_views);
+
    llvmpipe->dirty |= LP_NEW_SAMPLER_VIEW;
 }