1 files changed, 127 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/intel_batchbuffer.h b/src/mesa/drivers/dri/i965/intel_batchbuffer.h
new file mode 100644
index 0000000000..d576e97291
--- /dev/null
+++ b/src/mesa/drivers/dri/i965/intel_batchbuffer.h
@@ -0,0 +1,127 @@
+/**************************************************************************
+ * 
+ * Copyright 2006 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * All Rights Reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ * 
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ * 
+ **************************************************************************/
+
+#ifndef INTEL_BATCHBUFFER_H
+#define INTEL_BATCHBUFFER_H
+
+#include "mtypes.h"
+#include "bufmgr.h"
+
+struct intel_context;
+
+#define BATCH_SZ (16 * 1024)
+#define BATCH_REFILL 4096
+#define BATCH_RESERVED 16
+
+#define INTEL_BATCH_NO_CLIPRECTS 0x1
+#define INTEL_BATCH_CLIPRECTS    0x2
+
+struct intel_batchbuffer {
+   struct intel_context *intel;
+
+   struct buffer *buffer;
+
+   GLuint flags;
+   GLuint offset;
+
+   GLubyte *map;
+   GLubyte *ptr; 
+};
+
+struct intel_batchbuffer *intel_batchbuffer_alloc( struct intel_context *intel );
+
+void intel_batchbuffer_free( struct intel_batchbuffer *batch );
+
+
+void intel_batchbuffer_flush( struct intel_batchbuffer *batch );
+
+void intel_batchbuffer_unmap( struct intel_batchbuffer *batch );
+void intel_batchbuffer_map( struct intel_batchbuffer *batch );
+
+
+/* Unlike bmBufferData, this currently requires the buffer be mapped.
+ * Consider it a convenience function wrapping multple
+ * intel_buffer_dword() calls.
+ */
+void intel_batchbuffer_data(struct intel_batchbuffer *batch,
+			    const void *data,
+			    GLuint bytes,
+			    GLuint flags);
+
+void intel_batchbuffer_release_space(struct intel_batchbuffer *batch,
+				   GLuint bytes);
+
+
+/* Inline functions - might actually be better off with these
+ * non-inlined.  Certainly better off switching all command packets to
+ * be passed as structs rather than dwords, but that's a little bit of
+ * work...
+ */
+static inline GLuint 
+intel_batchbuffer_space( struct intel_batchbuffer *batch )
+{
+   return (BATCH_SZ - BATCH_RESERVED) - (batch->ptr - (batch->map + batch->offset));
+}
+
+
+static inline void 
+intel_batchbuffer_emit_dword(struct intel_batchbuffer *batch,
+			     GLuint dword)
+{
+   assert(batch->map);
+   assert(intel_batchbuffer_space(batch) >= 4);
+   *(GLuint *)(batch->ptr) = dword;
+   batch->ptr += 4;
+}
+
+static inline void 
+intel_batchbuffer_require_space(struct intel_batchbuffer *batch,
+				GLuint sz,
+				GLuint flags)
+{
+   assert(sz < BATCH_SZ - 8);
+   if (intel_batchbuffer_space(batch) < sz ||
+       (batch->flags != 0 && flags != 0 && batch->flags != flags))
+      intel_batchbuffer_flush(batch);
+   
+   batch->flags |= flags;
+}
+
+void intel_batchbuffer_align( struct intel_batchbuffer *batch,
+			      GLuint align,
+			      GLuint sz );
+
+
+/* Here are the crusty old macros, to be removed:
+ */
+#define BATCH_LOCALS 
+#define BEGIN_BATCH(n, flags) intel_batchbuffer_require_space(intel->batch, n*4, flags)
+#define OUT_BATCH(d)  intel_batchbuffer_emit_dword(intel->batch, d)
+#define ADVANCE_BATCH() do { } while(0)
+
+
+#endif