1 files changed, 157 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/intel/intel_batchbuffer.h b/src/mesa/drivers/dri/intel/intel_batchbuffer.h
new file mode 100644
index 0000000000..52d6ecc223
--- /dev/null
+++ b/src/mesa/drivers/dri/intel/intel_batchbuffer.h
@@ -0,0 +1,157 @@
+#ifndef INTEL_BATCHBUFFER_H
+#define INTEL_BATCHBUFFER_H
+
+#include "mtypes.h"
+
+#include "dri_bufmgr.h"
+#include "intel_reg.h"
+
+struct intel_context;
+
+#define BATCH_SZ 16384
+#define BATCH_RESERVED 16
+
+enum cliprect_mode {
+   /**
+    * Batchbuffer contents may be looped over per cliprect, but do not
+    * require it.
+    */
+   IGNORE_CLIPRECTS,
+   /**
+    * Batchbuffer contents require looping over per cliprect at batch submit
+    * time.
+    */
+   LOOP_CLIPRECTS,
+   /**
+    * Batchbuffer contents contain drawing that should not be executed multiple
+    * times.
+    */
+   NO_LOOP_CLIPRECTS,
+   /**
+    * Batchbuffer contents contain drawing that already handles cliprects, such
+    * as 2D drawing to front/back/depth that doesn't respect DRAWING_RECTANGLE.
+    * Equivalent behavior to NO_LOOP_CLIPRECTS, but may not persist in batch
+    * outside of LOCK/UNLOCK.
+    */
+   REFERENCES_CLIPRECTS
+};
+
+struct intel_batchbuffer
+{
+   struct intel_context *intel;
+
+   dri_bo *buf;
+
+   GLubyte *buffer;
+
+   GLubyte *map;
+   GLubyte *ptr;
+
+   enum cliprect_mode cliprect_mode;
+
+   GLuint size;
+
+   GLuint dirty_state;
+};
+
+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,
+			      const char *file, int line);
+
+#define intel_batchbuffer_flush(batch) \
+	_intel_batchbuffer_flush(batch, __FILE__, __LINE__)
+
+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,
+			    enum cliprect_mode cliprect_mode);
+
+void intel_batchbuffer_release_space(struct intel_batchbuffer *batch,
+                                     GLuint bytes);
+
+GLboolean intel_batchbuffer_emit_reloc(struct intel_batchbuffer *batch,
+                                       dri_bo *buffer,
+				       uint32_t read_domains,
+				       uint32_t write_domain,
+				       uint32_t 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 GLint
+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,
+				enum cliprect_mode cliprect_mode)
+{
+   assert(sz < batch->size - 8);
+   if (intel_batchbuffer_space(batch) < sz)
+      intel_batchbuffer_flush(batch);
+
+   if (cliprect_mode != IGNORE_CLIPRECTS) {
+      if (batch->cliprect_mode == IGNORE_CLIPRECTS) {
+	 batch->cliprect_mode = cliprect_mode;
+      } else {
+	 if (batch->cliprect_mode != cliprect_mode) {
+	    intel_batchbuffer_flush(batch);
+	    batch->cliprect_mode = cliprect_mode;
+	 }
+      }
+   }
+}
+
+/* Here are the crusty old macros, to be removed:
+ */
+#define BATCH_LOCALS
+
+#define BEGIN_BATCH(n, cliprect_mode) do {				\
+   intel_batchbuffer_require_space(intel->batch, (n)*4, cliprect_mode); \
+} while (0)
+
+#define OUT_BATCH(d)  intel_batchbuffer_emit_dword(intel->batch, d)
+
+#define OUT_RELOC(buf, read_domains, write_domain, delta) do {		\
+   assert((delta) >= 0);						\
+   intel_batchbuffer_emit_reloc(intel->batch, buf,			\
+				read_domains, write_domain, delta);	\
+} while (0)
+
+#define ADVANCE_BATCH() do { } while(0)
+
+
+static INLINE void
+intel_batchbuffer_emit_mi_flush(struct intel_batchbuffer *batch)
+{
+   intel_batchbuffer_require_space(batch, 4, IGNORE_CLIPRECTS);
+   intel_batchbuffer_emit_dword(batch, MI_FLUSH);
+}
+
+#endif