src/gallium/drivers/nvfx/nv04_2d.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2009 Ben Skeggs
   4  * Copyright 2009 Younes Manton
   5  * Copyright 2010 Luca Barbieri
   6  * All Rights Reserved.
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining
   9  * a copy of this software and associated documentation files (the
  10  * "Software"), to deal in the Software without restriction, including
  11  * without limitation the rights to use, copy, modify, merge, publish,
  12  * distribute, sub license, and/or sell copies of the Software, and to
  13  * permit persons to whom the Software is furnished to do so, subject to
  14  * the following conditions:
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  17  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
  18  * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  19  * NON-INFRINGEMENT. IN NO EVENT SHALL THE COPYRIGHT HOLDERS, AUTHORS
  20  * AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  22  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  23  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  24  *
  25  * The above copyright notice and this permission notice (including the
  26  * next paragraph) shall be included in all copies or substantial portions
  27  * of the Software.
  28  *
  29  **************************************************************************/
  30
  31 /* this code has no Mesa or Gallium dependency and can be reused in the classic Mesa driver or DDX */
  32
  33 #ifndef __NV04_2D_H__
  34 #define __NV04_2D_H__
  35
  36 struct nv04_2d_context;
  37 struct nouveau_channel;
  38 struct nouveau_bo;
  39
  40 // NOTE: all functions taking this as a parameter will CLOBBER it (except for ->bo)
  41 struct nv04_region {
  42         struct nouveau_bo* bo;
  43         int offset;
  44         unsigned pitch; // 0 -> swizzled
  45         unsigned bpps; // bpp shift (0, 1, 2; 3, 4 for fp/compressed)
  46         unsigned one_bits; // number of high bits read and written as ones (for "no-alpha" optimization)
  47         unsigned x, y, z;
  48         unsigned w, h, d;
  49 };
  50
  51 static inline void
  52 nv04_region_try_to_linearize(struct nv04_region* rgn)
  53 {
  54         assert(!rgn->pitch);
  55
  56         if(rgn->d <= 1)
  57         {
  58                 if(rgn->h <= 1 || rgn->w <= 2)
  59                         rgn->pitch = rgn->w << rgn->bpps;
  60         }
  61         else
  62         {
  63                 if(rgn->h <= 2 && rgn->w <= 2)
  64                 {
  65                         rgn->pitch = rgn->w << rgn->bpps;
  66                         rgn->offset += rgn->z * rgn->h * rgn->pitch;
  67                 }
  68         }
  69 }
  70
  71 void
  72 nv04_memcpy(struct nv04_2d_context *ctx,
  73                 struct nouveau_bo* dstbo, int dstoff,
  74                 struct nouveau_bo* srcbo, int srcoff,
  75                 unsigned size);
  76
  77 unsigned
  78 nv04_region_begin(struct nv04_region* rgn, unsigned w, unsigned h);
  79
  80 unsigned
  81 nv04_region_end(struct nv04_region* rgn, unsigned w, unsigned h);
  82
  83 void
  84 nv04_2d_context_takedown(struct nv04_2d_context *pctx);
  85
  86 struct nv04_2d_context *
  87 nv04_2d_context_init(struct nouveau_channel* chan);
  88
  89 void
  90 nv04_region_copy_cpu(struct nv04_region* dst, struct nv04_region* src, int w, int h);
  91
  92 void
  93 nv04_region_fill_cpu(struct nv04_region* dst, int w, int h, unsigned value);
  94
  95 int
  96 nv04_region_copy_2d(struct nv04_2d_context *ctx,
  97                 struct nv04_region* dst, struct nv04_region* src,
  98                 int w, int h,
  99                 int dst_to_gpu, int src_on_gpu);
 100
 101 int
 102 nv04_region_fill_2d(struct nv04_2d_context *ctx,
 103                 struct nv04_region *dst,
 104                 int w, int h,
 105                 unsigned value);
 106
 107 #endif