draw: reduce the size of the llvm variant key

1 files changed, 45 insertions, 9 deletions

diff --git a/src/gallium/auxiliary/draw/draw_llvm.h b/src/gallium/auxiliary/draw/draw_llvm.h
index 4addb47d2d8..6196b2f983f 100644
--- a/src/gallium/auxiliary/draw/draw_llvm.h
+++ b/src/gallium/auxiliary/draw/draw_llvm.h
@@ -151,12 +151,43 @@ typedef void
 
 struct draw_llvm_variant_key
 {
-   struct pipe_vertex_element vertex_element[PIPE_MAX_ATTRIBS];
-   unsigned                   nr_vertex_elements;
-   struct pipe_shader_state   vs;
-   struct lp_sampler_static_state sampler[PIPE_MAX_VERTEX_SAMPLERS];
+   unsigned nr_vertex_elements:16;
+   unsigned nr_samplers:16;
+
+   /* Variable number of vertex elements:
+    */
+   struct pipe_vertex_element vertex_element[1];
+
+   /* Followed by variable number of samplers:
+    */
+/*   struct lp_sampler_static_state sampler; */
 };
 
+#define DRAW_LLVM_MAX_VARIANT_KEY_SIZE \
+   (sizeof(struct draw_llvm_variant_key) +	\
+    PIPE_MAX_VERTEX_SAMPLERS * sizeof(struct lp_sampler_static_state) +	\
+    (PIPE_MAX_ATTRIBS-1) * sizeof(struct pipe_vertex_element))
+
+
+static INLINE size_t
+draw_llvm_variant_key_size(unsigned nr_vertex_elements,
+			   unsigned nr_samplers)
+{
+   return (sizeof(struct draw_llvm_variant_key) +
+	   nr_samplers * sizeof(struct lp_sampler_static_state) +
+	   (nr_vertex_elements - 1) * sizeof(struct pipe_vertex_element));
+}
+
+
+static INLINE struct lp_sampler_static_state *
+draw_llvm_variant_key_samplers(struct draw_llvm_variant_key *key)
+{
+   return (struct lp_sampler_static_state *)
+      &key->vertex_element[key->nr_vertex_elements];
+}
+
+
+
 struct draw_llvm_variant_list_item
 {
    struct draw_llvm_variant *base;
@@ -165,7 +196,6 @@ struct draw_llvm_variant_list_item
 
 struct draw_llvm_variant
 {
-   struct draw_llvm_variant_key key;
    LLVMValueRef function;
    LLVMValueRef function_elts;
    draw_jit_vert_func jit_func;
@@ -176,11 +206,16 @@ struct draw_llvm_variant
    struct draw_llvm *llvm;
    struct draw_llvm_variant_list_item list_item_global;
    struct draw_llvm_variant_list_item list_item_local;
+
+   /* key is variable-sized, must be last */
+   struct draw_llvm_variant_key key;
+   /* key is variable-sized, must be last */
 };
 
 struct llvm_vertex_shader {
    struct draw_vertex_shader base;
 
+   unsigned variant_key_size;
    struct draw_llvm_variant_list_item variants;
    unsigned variants_created;
    unsigned variants_cached;
@@ -220,14 +255,15 @@ void
 draw_llvm_destroy(struct draw_llvm *llvm);
 
 struct draw_llvm_variant *
-draw_llvm_create_variant(struct draw_llvm *llvm, int num_inputs);
+draw_llvm_create_variant(struct draw_llvm *llvm,
+			 unsigned num_vertex_header_attribs,
+			 const struct draw_llvm_variant_key *key);
 
 void
 draw_llvm_destroy_variant(struct draw_llvm_variant *variant);
 
-void
-draw_llvm_make_variant_key(struct draw_llvm *llvm,
-                           struct draw_llvm_variant_key *key);
+struct draw_llvm_variant_key *
+draw_llvm_make_variant_key(struct draw_llvm *llvm, char *store);
 
 LLVMValueRef
 draw_llvm_translate_from(LLVMBuilderRef builder,