1 files changed, 72 insertions, 0 deletions
diff --git a/i915/intel_texmem.c b/i915/intel_texmem.c
new file mode 100644
index 0000000..09beec9
--- /dev/null
+++ b/i915/intel_texmem.c
@@ -0,0 +1,72 @@
+#include "texmem.h"
+#include "simple_list.h"
+#include "imports.h"
+#include "macros.h"
+
+#include "intel_tex.h"
+
+static GLuint
+driLog2( GLuint n )
+{
+   GLuint log2;
+
+   for ( log2 = 1 ; n > 1 ; log2++ ) {
+      n >>= 1;
+   }
+
+   return log2;
+}
+
+static void calculate_heap_size( driTexHeap * heap, unsigned size, 
+				 unsigned nr_regions, unsigned alignmentShift )
+{
+   unsigned     l;
+
+   l = driLog2( (size - 1) / nr_regions );
+   if ( l < alignmentShift )
+   {
+      l = alignmentShift;
+   }
+
+   heap->logGranularity = l;
+   heap->size = size & ~((1L << l) - 1);
+}
+
+
+GLboolean 
+intel_driReinitTextureHeap( driTexHeap *heap,
+			    unsigned size )
+{
+   driTextureObject *t, *tmp;
+
+   /* Kick out everything:
+    */
+   foreach_s ( t, tmp, & heap->texture_objects ) {
+      if ( t->tObj != NULL ) {
+	 driSwapOutTextureObject( t );
+      }
+      else {
+	 driDestroyTextureObject( t );
+      }
+   }
+   
+   /* Destroy the memory manager:
+    */
+   mmDestroy( heap->memory_heap );
+      
+   /* Recreate the memory manager:
+    */
+   calculate_heap_size(heap, size, heap->nrRegions, heap->alignmentShift);
+   heap->memory_heap = mmInit( 0, heap->size );
+   if ( heap->memory_heap == NULL ) {
+      fprintf(stderr, "driReinitTextureHeap: couldn't recreate memory heap\n");
+      FREE( heap );
+      return GL_FALSE;
+   }
+
+   make_empty_list( & heap->texture_objects );
+
+   return GL_TRUE;
+}
+
+