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      1 /**************************************************************************
      2  *
      3  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
      4  * All Rights Reserved.
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a
      7  * copy of this software and associated documentation files (the
      8  * "Software"), to deal in the Software without restriction, including
      9  * without limitation the rights to use, copy, modify, merge, publish,
     10  * distribute, sub license, and/or sell copies of the Software, and to
     11  * permit persons to whom the Software is furnished to do so, subject to
     12  * the following conditions:
     13  *
     14  * The above copyright notice and this permission notice (including the
     15  * next paragraph) shall be included in all copies or substantial portions
     16  * of the Software.
     17  *
     18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
     19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
     21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
     22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
     23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
     24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
     25  *
     26  **************************************************************************/
     27 
     28 #ifndef I915_BATCHBUFFER_H
     29 #define I915_BATCHBUFFER_H
     30 
     31 #include "i915_winsys.h"
     32 #include "util/u_debug.h"
     33 
     34 struct i915_context;
     35 
     36 static INLINE size_t
     37 i915_winsys_batchbuffer_space(struct i915_winsys_batchbuffer *batch)
     38 {
     39    return batch->size - (batch->ptr - batch->map);
     40 }
     41 
     42 static INLINE boolean
     43 i915_winsys_batchbuffer_check(struct i915_winsys_batchbuffer *batch,
     44                               size_t dwords)
     45 {
     46    return dwords * 4 <= i915_winsys_batchbuffer_space(batch);
     47 }
     48 
     49 static INLINE void
     50 i915_winsys_batchbuffer_dword_unchecked(struct i915_winsys_batchbuffer *batch,
     51                                         unsigned dword)
     52 {
     53    *(unsigned *)batch->ptr = dword;
     54    batch->ptr += 4;
     55 }
     56 
     57 static INLINE void
     58 i915_winsys_batchbuffer_float(struct i915_winsys_batchbuffer *batch,
     59                               float f)
     60 {
     61    union { float f; unsigned int ui; } uif;
     62    uif.f = f;
     63    assert (i915_winsys_batchbuffer_space(batch) >= 4);
     64    i915_winsys_batchbuffer_dword_unchecked(batch, uif.ui);
     65 }
     66 
     67 static INLINE void
     68 i915_winsys_batchbuffer_dword(struct i915_winsys_batchbuffer *batch,
     69                               unsigned dword)
     70 {
     71    assert (i915_winsys_batchbuffer_space(batch) >= 4);
     72    i915_winsys_batchbuffer_dword_unchecked(batch, dword);
     73 }
     74 
     75 static INLINE void
     76 i915_winsys_batchbuffer_write(struct i915_winsys_batchbuffer *batch,
     77                               void *data,
     78                               size_t size)
     79 {
     80    assert (i915_winsys_batchbuffer_space(batch) >= size);
     81 
     82    memcpy(batch->ptr, data, size);
     83    batch->ptr += size;
     84 }
     85 
     86 static INLINE boolean
     87 i915_winsys_validate_buffers(struct i915_winsys_batchbuffer *batch,
     88                              struct i915_winsys_buffer **buffers,
     89                              int num_of_buffers)
     90 {
     91    return batch->iws->validate_buffers(batch, buffers, num_of_buffers);
     92 }
     93 
     94 static INLINE int
     95 i915_winsys_batchbuffer_reloc(struct i915_winsys_batchbuffer *batch,
     96                               struct i915_winsys_buffer *buffer,
     97                               enum i915_winsys_buffer_usage usage,
     98                               size_t offset, boolean fenced)
     99 {
    100    return batch->iws->batchbuffer_reloc(batch, buffer, usage, offset, fenced);
    101 }
    102 
    103 #endif
    104