gallium: fix blend state cso

if independent blend state was disabled, only the data from first rt was
stored, however the comparison used the full state, hence there never was
a match and always a new object was created.
Fixes a huge performance drop with llvmpipe due to recompilation.

3 files changed, 20 insertions, 37 deletions

diff --git a/src/gallium/auxiliary/cso_cache/cso_cache.c b/src/gallium/auxiliary/cso_cache/cso_cache.c
index e6dce3f0e5..a6a07e72c2 100644
--- a/src/gallium/auxiliary/cso_cache/cso_cache.c
+++ b/src/gallium/auxiliary/cso_cache/cso_cache.c
@@ -113,26 +113,6 @@ static struct cso_hash *_cso_hash_for_type(struct cso_cache *sc, enum cso_cache_
    return hash;
 }
 
-static int _cso_size_for_type(enum cso_cache_type type)
-{
-   switch(type) {
-   case CSO_BLEND:
-      return sizeof(struct pipe_blend_state);
-   case CSO_SAMPLER:
-      return sizeof(struct pipe_sampler_state);
-   case CSO_DEPTH_STENCIL_ALPHA:
-      return sizeof(struct pipe_depth_stencil_alpha_state);
-   case CSO_RASTERIZER:
-      return sizeof(struct pipe_rasterizer_state);
-   case CSO_FRAGMENT_SHADER:
-      return sizeof(struct pipe_shader_state);
-   case CSO_VERTEX_SHADER:
-      return sizeof(struct pipe_shader_state);
-   }
-   return 0;
-}
-
-
 static void delete_blend_state(void *state, void *data)
 {
    struct cso_blend *cso = (struct cso_blend *)state;
@@ -282,10 +262,9 @@ void *cso_hash_find_data_from_template( struct cso_hash *hash,
 
 struct cso_hash_iter cso_find_state_template(struct cso_cache *sc,
                                              unsigned hash_key, enum cso_cache_type type,
-                                             void *templ)
+                                             void *templ, unsigned size)
 {
    struct cso_hash_iter iter = cso_find_state(sc, hash_key, type);
-   int size = _cso_size_for_type(type);
    while (!cso_hash_iter_is_null(iter)) {
       void *iter_data = cso_hash_iter_data(iter);
       if (!memcmp(iter_data, templ, size))
diff --git a/src/gallium/auxiliary/cso_cache/cso_cache.h b/src/gallium/auxiliary/cso_cache/cso_cache.h
index 6b5c230e8f..eea60b940b 100644
--- a/src/gallium/auxiliary/cso_cache/cso_cache.h
+++ b/src/gallium/auxiliary/cso_cache/cso_cache.h
@@ -160,7 +160,7 @@ struct cso_hash_iter cso_find_state(struct cso_cache *sc,
                                     unsigned hash_key, enum cso_cache_type type);
 struct cso_hash_iter cso_find_state_template(struct cso_cache *sc,
                                              unsigned hash_key, enum cso_cache_type type,
-                                             void *templ);
+                                             void *templ, unsigned size);
 void cso_for_each_state(struct cso_cache *sc, enum cso_cache_type type,
                         cso_state_callback func, void *user_data);
 void * cso_take_state(struct cso_cache *sc, unsigned hash_key,
diff --git a/src/gallium/auxiliary/cso_cache/cso_context.c b/src/gallium/auxiliary/cso_cache/cso_context.c
index c479c36064..dec830ba93 100644
--- a/src/gallium/auxiliary/cso_cache/cso_context.c
+++ b/src/gallium/auxiliary/cso_cache/cso_context.c
@@ -317,7 +317,7 @@ enum pipe_error cso_set_blend(struct cso_context *ctx,
    key_size = templ->independent_blend_enable ? sizeof(struct pipe_blend_state) :
               (char *)&(templ->rt[1]) - (char *)templ;
    hash_key = cso_construct_key((void*)templ, key_size);
-   iter = cso_find_state_template(ctx->cache, hash_key, CSO_BLEND, (void*)templ);
+   iter = cso_find_state_template(ctx->cache, hash_key, CSO_BLEND, (void*)templ, key_size);
 
    if (cso_hash_iter_is_null(iter)) {
       struct cso_blend *cso = MALLOC(sizeof(struct cso_blend));
@@ -372,10 +372,11 @@ enum pipe_error cso_single_sampler(struct cso_context *ctx,
    void *handle = NULL;
 
    if (templ != NULL) {
-      unsigned hash_key = cso_construct_key((void*)templ, sizeof(struct pipe_sampler_state));
+      unsigned key_size = sizeof(struct pipe_sampler_state);
+      unsigned hash_key = cso_construct_key((void*)templ, key_size);
       struct cso_hash_iter iter = cso_find_state_template(ctx->cache,
                                                           hash_key, CSO_SAMPLER,
-                                                          (void*)templ);
+                                                          (void*)templ, key_size);
 
       if (cso_hash_iter_is_null(iter)) {
          struct cso_sampler *cso = MALLOC(sizeof(struct cso_sampler));
@@ -412,10 +413,11 @@ cso_single_vertex_sampler(struct cso_context *ctx,
    void *handle = NULL;
 
    if (templ != NULL) {
-      unsigned hash_key = cso_construct_key((void*)templ, sizeof(struct pipe_sampler_state));
+      unsigned key_size = sizeof(struct pipe_sampler_state);
+      unsigned hash_key = cso_construct_key((void*)templ, key_size);
       struct cso_hash_iter iter = cso_find_state_template(ctx->cache,
                                                           hash_key, CSO_SAMPLER,
-                                                          (void*)templ);
+                                                          (void*)templ, key_size);
 
       if (cso_hash_iter_is_null(iter)) {
          struct cso_sampler *cso = MALLOC(sizeof(struct cso_sampler));
@@ -701,12 +703,12 @@ cso_restore_vertex_sampler_textures(struct cso_context *ctx)
 enum pipe_error cso_set_depth_stencil_alpha(struct cso_context *ctx,
                                             const struct pipe_depth_stencil_alpha_state *templ)
 {
-   unsigned hash_key = cso_construct_key((void*)templ,
-                                         sizeof(struct pipe_depth_stencil_alpha_state));
+   unsigned key_size = sizeof(struct pipe_depth_stencil_alpha_state);
+   unsigned hash_key = cso_construct_key((void*)templ, key_size);
    struct cso_hash_iter iter = cso_find_state_template(ctx->cache,
                                                        hash_key, 
-						       CSO_DEPTH_STENCIL_ALPHA,
-                                                       (void*)templ);
+                                                       CSO_DEPTH_STENCIL_ALPHA,
+                                                       (void*)templ, key_size);
    void *handle;
 
    if (cso_hash_iter_is_null(iter)) {
@@ -758,11 +760,11 @@ void cso_restore_depth_stencil_alpha(struct cso_context *ctx)
 enum pipe_error cso_set_rasterizer(struct cso_context *ctx,
                                    const struct pipe_rasterizer_state *templ)
 {
-   unsigned hash_key = cso_construct_key((void*)templ,
-                                         sizeof(struct pipe_rasterizer_state));
+   unsigned key_size = sizeof(struct pipe_rasterizer_state);
+   unsigned hash_key = cso_construct_key((void*)templ, key_size);
    struct cso_hash_iter iter = cso_find_state_template(ctx->cache,
                                                        hash_key, CSO_RASTERIZER,
-                                                       (void*)templ);
+                                                       (void*)templ, key_size);
    void *handle = NULL;
 
    if (cso_hash_iter_is_null(iter)) {
@@ -844,7 +846,8 @@ enum pipe_error cso_set_fragment_shader(struct cso_context *ctx,
    struct cso_hash_iter iter = cso_find_state_template(ctx->cache,
                                                        hash_key, 
                                                        CSO_FRAGMENT_SHADER,
-                                                       (void*)tokens);
+                                                       (void*)tokens,
+                                                       sizeof(*templ)); /* XXX correct? tokens_size? */
    void *handle = NULL;
 
    if (cso_hash_iter_is_null(iter)) {
@@ -923,7 +926,8 @@ enum pipe_error cso_set_vertex_shader(struct cso_context *ctx,
                                          sizeof(struct pipe_shader_state));
    struct cso_hash_iter iter = cso_find_state_template(ctx->cache,
                                                        hash_key, CSO_VERTEX_SHADER,
-                                                       (void*)templ);
+                                                       (void*)templ,
+                                                       sizeof(*templ));
    void *handle = NULL;
 
    if (cso_hash_iter_is_null(iter)) {