From 6b9e31f3eb3dbe20cbc8493b963bbc6530e392c6 Mon Sep 17 00:00:00 2001
From: Keith Whitwell <keith@tungstengraphics.com>
Date: Wed, 1 Nov 2006 12:03:11 +0000
Subject: Import texmem i915 driver to its new location as i915tex.

---
 src/mesa/drivers/dri/i915tex/intel_batchbuffer.h | 124 +++++++++++++++++++++++
 1 file changed, 124 insertions(+)
 create mode 100644 src/mesa/drivers/dri/i915tex/intel_batchbuffer.h

(limited to 'src/mesa/drivers/dri/i915tex/intel_batchbuffer.h')

diff --git a/src/mesa/drivers/dri/i915tex/intel_batchbuffer.h b/src/mesa/drivers/dri/i915tex/intel_batchbuffer.h
new file mode 100644
index 0000000000..a83dbf423d
--- /dev/null
+++ b/src/mesa/drivers/dri/i915tex/intel_batchbuffer.h
@@ -0,0 +1,124 @@
+#ifndef INTEL_BATCHBUFFER_H
+#define INTEL_BATCHBUFFER_H
+
+#include "mtypes.h"
+#include "dri_bufmgr.h"
+
+struct intel_context;
+
+#define BATCH_SZ 16384
+#define BATCH_RESERVED 16
+
+#define MAX_RELOCS 100
+
+#define INTEL_BATCH_NO_CLIPRECTS 0x1
+#define INTEL_BATCH_CLIPRECTS    0x2
+
+struct buffer_reloc
+{
+   struct _DriBufferObject *buf;
+   GLuint offset;
+   GLuint delta;                /* not needed? */
+};
+
+struct intel_batchbuffer
+{
+   struct bufmgr *bm;
+   struct intel_context *intel;
+
+   struct _DriBufferObject *buffer;
+   struct _DriFenceObject *last_fence;
+   GLuint flags;
+
+   drmBOList list;
+   GLuint list_count;
+   GLubyte *map;
+   GLubyte *ptr;
+
+   struct buffer_reloc reloc[MAX_RELOCS];
+   GLuint nr_relocs;
+   GLuint size;
+};
+
+struct intel_batchbuffer *intel_batchbuffer_alloc(struct intel_context
+                                                  *intel);
+
+void intel_batchbuffer_free(struct intel_batchbuffer *batch);
+
+
+void intel_batchbuffer_finish(struct intel_batchbuffer *batch);
+
+struct _DriFenceObject *intel_batchbuffer_flush(struct intel_batchbuffer
+                                                *batch);
+
+void intel_batchbuffer_reset(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);
+
+GLboolean intel_batchbuffer_emit_reloc(struct intel_batchbuffer *batch,
+                                       struct _DriBufferObject *buffer,
+                                       GLuint flags,
+                                       GLuint mask, GLuint offset);
+
+/* 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->size - BATCH_RESERVED) - (batch->ptr - batch->map);
+}
+
+
+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->size - 8);
+   if (intel_batchbuffer_space(batch) < sz ||
+       (batch->flags != 0 && flags != 0 && batch->flags != flags))
+      intel_batchbuffer_flush(batch);
+
+   batch->flags |= flags;
+}
+
+/* Here are the crusty old macros, to be removed:
+ */
+#define BATCH_LOCALS
+
+#define BEGIN_BATCH(n, flags) do {				\
+   assert(!intel->prim.flush);					\
+   intel_batchbuffer_require_space(intel->batch, (n)*4, flags);	\
+} while (0)
+
+#define OUT_BATCH(d)  intel_batchbuffer_emit_dword(intel->batch, d)
+
+#define OUT_RELOC(buf,flags,mask,delta) do { 				\
+   assert((delta) >= 0);							\
+   intel_batchbuffer_emit_reloc(intel->batch, buf, flags, mask, delta);	\
+} while (0)
+
+#define ADVANCE_BATCH() do { } while(0)
+
+
+#endif
-- 
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