intel_batchbuffer.h

mesa-6.5-minigui源码

#ifndef INTEL_BATCHBUFFER_H
#define INTEL_BATCHBUFFER_H

#include "mtypes.h"
#include "intel_bufmgr.h"

struct intel_context;

#define BATCH_SZ 4096
#define BATCH_RESERVED 16

#define MAX_RELOCS 100

#define INTEL_BATCH_NO_CLIPRECTS 0x1
#define INTEL_BATCH_CLIPRECTS    0x2

struct buffer_reloc {
   GLuint offset;
   GLuint elem;			/* elem in buffer list, not buffer id */
   GLuint delta;		/* not needed? */
};

struct intel_batchbuffer {
   struct bufmgr *bm;
   struct intel_context *intel;

   GLuint buffer;
   GLuint last_fence;
   GLuint flags;

   /* In progress:
    */
   unsigned long offset[MAX_RELOCS];
   struct _drmMMBufList *list;   
   GLuint list_count;
   GLubyte *map;
   GLubyte *ptr; 

   struct buffer_reloc reloc[MAX_RELOCS];
   GLuint nr_relocs;
};

struct intel_batchbuffer *intel_batchbuffer_alloc( struct intel_context *intel );

void intel_batchbuffer_free( struct intel_batchbuffer *batch );


<<<<<<< intel_batchbuffer.h
#define BEGIN_BATCH(n)							\
do {									\
   if (VERBOSE) fprintf(stderr, 					\
			"BEGIN_BATCH(%d) in %s, %d dwords free\n",	\
			(n), __FUNCTION__, intel->batch.space/4);	\
   if (intel->batch.space < (n)*4)					\
      intelFlushBatch(intel, GL_TRUE);					\
   if (intel->batch.space == intel->batch.size)	intel->batch.func = __FUNCTION__;			\
   batch_ptr = intel->batch.ptr;					\
} while (0)
=======
void intel_batchbuffer_finish( struct intel_batchbuffer *batch );
>>>>>>> 1.2.12.12

GLuint intel_batchbuffer_flush( 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,
					GLuint buffer,
					GLuint flags,
					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_SZ - 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_SZ - 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,delta) do { 				\
   assert((delta) >= 0);							\
   intel_batchbuffer_emit_reloc(intel->batch, buf, flags, delta);	\
} while (0)

#define ADVANCE_BATCH() do { } while(0)


#endif