From e1cb12bfff7f65c3599c9b68b9269f73942b1602 Mon Sep 17 00:00:00 2001
From: Eric Anholt <eric@anholt.net>
Date: Fri, 5 Nov 2010 07:25:18 -0700
Subject: [PATCH] prog_cache: Add some support for shader_programs in
 prog_cache.

This is used in the upcoming fixed function shader_program generation,
and shader_program and ARB programs are together in this code until
both fragment and vertex ff get converted.
---
 src/mesa/program/prog_cache.c | 53 ++++++++++++++++++++++++++++++++---
 src/mesa/program/prog_cache.h |  9 ++++++
 2 files changed, 58 insertions(+), 4 deletions(-)

diff --git a/src/mesa/program/prog_cache.c b/src/mesa/program/prog_cache.c
index 56ca59890de..2ccedb5d7d0 100644
--- a/src/mesa/program/prog_cache.c
+++ b/src/mesa/program/prog_cache.c
@@ -29,6 +29,7 @@
 #include "main/glheader.h"
 #include "main/mtypes.h"
 #include "main/imports.h"
+#include "main/shaderobj.h"
 #include "program/prog_cache.h"
 #include "program/program.h"
 
@@ -104,7 +105,8 @@ rehash(struct gl_program_cache *cache)
 
 
 static void
-clear_cache(struct gl_context *ctx, struct gl_program_cache *cache)
+clear_cache(struct gl_context *ctx, struct gl_program_cache *cache,
+	    GLboolean shader)
 {
    struct cache_item *c, *next;
    GLuint i;
@@ -115,7 +117,13 @@ clear_cache(struct gl_context *ctx, struct gl_program_cache *cache)
       for (c = cache->items[i]; c; c = next) {
 	 next = c->next;
 	 free(c->key);
-         _mesa_reference_program(ctx, &c->program, NULL);
+	 if (shader) {
+	    _mesa_reference_shader_program(ctx,
+					   (struct gl_shader_program **)&c->program,
+					   NULL);
+	 } else {
+	    _mesa_reference_program(ctx, &c->program, NULL);
+	 }
 	 free(c);
       }
       cache->items[i] = NULL;
@@ -147,7 +155,16 @@ _mesa_new_program_cache(void)
 void
 _mesa_delete_program_cache(struct gl_context *ctx, struct gl_program_cache *cache)
 {
-   clear_cache(ctx, cache);
+   clear_cache(ctx, cache, GL_FALSE);
+   free(cache->items);
+   free(cache);
+}
+
+void
+_mesa_delete_shader_cache(struct gl_context *ctx,
+			  struct gl_program_cache *cache)
+{
+   clear_cache(ctx, cache, GL_TRUE);
    free(cache->items);
    free(cache);
 }
@@ -197,7 +214,35 @@ _mesa_program_cache_insert(struct gl_context *ctx,
       if (cache->size < 1000)
 	 rehash(cache);
       else 
-	 clear_cache(ctx, cache);
+	 clear_cache(ctx, cache, GL_FALSE);
+   }
+
+   cache->n_items++;
+   c->next = cache->items[hash % cache->size];
+   cache->items[hash % cache->size] = c;
+}
+
+void
+_mesa_shader_cache_insert(struct gl_context *ctx,
+			  struct gl_program_cache *cache,
+			  const void *key, GLuint keysize,
+			  struct gl_shader_program *program)
+{
+   const GLuint hash = hash_key(key, keysize);
+   struct cache_item *c = CALLOC_STRUCT(cache_item);
+
+   c->hash = hash;
+
+   c->key = malloc(keysize);
+   memcpy(c->key, key, keysize);
+
+   c->program = (struct gl_program *)program;  /* no refcount change */
+
+   if (cache->n_items > cache->size * 1.5) {
+      if (cache->size < 1000)
+	 rehash(cache);
+      else
+	 clear_cache(ctx, cache, GL_TRUE);
    }
 
    cache->n_items++;
diff --git a/src/mesa/program/prog_cache.h b/src/mesa/program/prog_cache.h
index 01673348279..5d46bfc5cc9 100644
--- a/src/mesa/program/prog_cache.h
+++ b/src/mesa/program/prog_cache.h
@@ -44,6 +44,9 @@ _mesa_new_program_cache(void);
 extern void
 _mesa_delete_program_cache(struct gl_context *ctx, struct gl_program_cache *pc);
 
+extern void
+_mesa_delete_shader_cache(struct gl_context *ctx,
+			  struct gl_program_cache *cache);
 
 extern struct gl_program *
 _mesa_search_program_cache(struct gl_program_cache *cache,
@@ -55,5 +58,11 @@ _mesa_program_cache_insert(struct gl_context *ctx,
                            const void *key, GLuint keysize,
                            struct gl_program *program);
 
+void
+_mesa_shader_cache_insert(struct gl_context *ctx,
+			  struct gl_program_cache *cache,
+			  const void *key, GLuint keysize,
+			  struct gl_shader_program *program);
+
 
 #endif /* PROG_CACHE_H */
-- 
2.30.2