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#ifndef BRW_BATCHBUFFER_H
#define BRW_BATCHBUFFER_H
#include "util/u_debug.h"
#include "brw_types.h"
#include "brw_winsys.h"
#include "brw_reg.h"
#define BATCH_SZ 16384
#define BATCH_RESERVED 16
/* All ignored:
*/
enum cliprect_mode {
IGNORE_CLIPRECTS,
LOOP_CLIPRECTS,
NO_LOOP_CLIPRECTS,
REFERENCES_CLIPRECTS
};
struct brw_batchbuffer {
struct brw_winsys_screen *sws;
struct brw_winsys_buffer *buf;
struct brw_chipset chipset;
/* Main-memory copy of the batch-buffer, built up incrementally &
* then copied as one to the true buffer.
*
* XXX: is this still necessary?
* XXX: if so, can this be hidden inside the GEM-specific winsys code?
*/
boolean use_malloc_buffer;
uint8_t *malloc_buffer;
/**
* Values exported to speed up the writing the batchbuffer,
* instead of having to go trough a accesor function for
* each dword written.
*/
/*{@*/
uint8_t *map;
uint8_t *ptr;
size_t size;
struct {
uint8_t *end_ptr;
} emit;
size_t relocs;
size_t max_relocs;
/*@}*/
};
struct brw_batchbuffer *brw_batchbuffer_alloc( struct brw_winsys_screen *sws,
struct brw_chipset chipset );
void brw_batchbuffer_free(struct brw_batchbuffer *batch);
void _brw_batchbuffer_flush(struct brw_batchbuffer *batch,
const char *file, int line);
void brw_batchbuffer_reset(struct brw_batchbuffer *batch);
/* Unlike bmBufferData, this currently requires the buffer be mapped.
* Consider it a convenience function wrapping multple
* intel_buffer_dword() calls.
*/
int brw_batchbuffer_data(struct brw_batchbuffer *batch,
const void *data, GLuint bytes,
enum cliprect_mode cliprect_mode);
int brw_batchbuffer_emit_reloc(struct brw_batchbuffer *batch,
struct brw_winsys_buffer *buffer,
enum brw_buffer_usage usage,
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
brw_batchbuffer_space(struct brw_batchbuffer *batch)
{
return (batch->size - BATCH_RESERVED) - (batch->ptr - batch->map);
}
static INLINE void
brw_batchbuffer_emit_dword(struct brw_batchbuffer *batch, GLuint dword)
{
assert(batch->map);
assert(brw_batchbuffer_space(batch) >= 4);
*(GLuint *) (batch->ptr) = dword;
batch->ptr += 4;
}
static INLINE boolean
brw_batchbuffer_require_space(struct brw_batchbuffer *batch,
GLuint sz)
{
assert(sz < batch->size - 8);
if (brw_batchbuffer_space(batch) < sz) {
assert(0);
return FALSE;
}
#ifdef DEBUG
batch->emit.end_ptr = batch->ptr + sz;
#endif
return TRUE;
}
/* Here are the crusty old macros, to be removed:
*/
#define BEGIN_BATCH(n, cliprect_mode) do { \
brw_batchbuffer_require_space(brw->batch, (n)*4); \
} while (0)
#define OUT_BATCH(d) brw_batchbuffer_emit_dword(brw->batch, d)
#define OUT_RELOC(buf, usage, delta) do { \
assert((unsigned) (delta) < buf->size); \
brw_batchbuffer_emit_reloc(brw->batch, buf, \
usage, delta); \
} while (0)
#ifdef DEBUG
#define ADVANCE_BATCH() do { \
unsigned int _n = brw->batch->ptr - brw->batch->emit.end_ptr; \
if (_n != 0) { \
debug_printf("%s: %d too many bytes emitted to batch\n", \
__FUNCTION__, _n); \
abort(); \
} \
brw->batch->emit.end_ptr = NULL; \
} while(0)
#else
#define ADVANCE_BATCH()
#endif
static INLINE void
brw_batchbuffer_emit_mi_flush(struct brw_batchbuffer *batch)
{
brw_batchbuffer_require_space(batch, 4);
brw_batchbuffer_emit_dword(batch, MI_FLUSH);
}
#endif
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