src/gallium/drivers/i915simple/i915_blit.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 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
  29 #include "i915_context.h"
  30 #include "i915_winsys.h"
  31 #include "i915_blit.h"
  32 #include "i915_reg.h"
  33 #include "i915_batch.h"
  34 #include "i915_debug.h"
  35
  36 #define FILE_DEBUG_FLAG DEBUG_BLIT
  37
  38 void
  39 i915_fill_blit(struct i915_context *i915,
  40                unsigned cpp,
  41                short dst_pitch,
  42                struct pipe_buffer *dst_buffer,
  43                unsigned dst_offset,
  44                short x, short y,
  45                short w, short h,
  46                unsigned color)
  47 {
  48    unsigned BR13, CMD;
  49
  50    dst_pitch *= (short) cpp;
  51
  52    switch (cpp) {
  53    case 1:
  54    case 2:
  55    case 3:
  56       BR13 = dst_pitch | (0xF0 << 16) | (1 << 24);
  57       CMD = XY_COLOR_BLT_CMD;
  58       break;
  59    case 4:
  60       BR13 = dst_pitch | (0xF0 << 16) | (1 << 24) | (1 << 25);
  61       CMD = (XY_COLOR_BLT_CMD | XY_COLOR_BLT_WRITE_ALPHA |
  62              XY_COLOR_BLT_WRITE_RGB);
  63       break;
  64    default:
  65       return;
  66    }
  67
  68 //   DBG("%s dst:buf(%p)/%d+%d %d,%d sz:%dx%d\n",
  69 //       __FUNCTION__, dst_buffer, dst_pitch, dst_offset, x, y, w, h);
  70
  71
  72    if (!BEGIN_BATCH(6, 1)) {
  73       FLUSH_BATCH(NULL);
  74       assert(BEGIN_BATCH(6, 1));
  75    }
  76    OUT_BATCH(CMD);
  77    OUT_BATCH(BR13);
  78    OUT_BATCH((y << 16) | x);
  79    OUT_BATCH(((y + h) << 16) | (x + w));
  80    OUT_RELOC( dst_buffer, I915_BUFFER_ACCESS_WRITE, dst_offset);
  81    OUT_BATCH(color);
  82 }
  83
  84
  85 void
  86 i915_copy_blit( struct i915_context *i915,
  87                   unsigned do_flip,
  88                   unsigned cpp,
  89                   short src_pitch,
  90                   struct pipe_buffer *src_buffer,
  91                   unsigned src_offset,
  92                   short dst_pitch,
  93                   struct pipe_buffer *dst_buffer,
  94                   unsigned dst_offset,
  95                   short src_x, short src_y,
  96                   short dst_x, short dst_y,
  97                   short w, short h )
  98 {
  99    unsigned CMD, BR13;
 100    int dst_y2 = dst_y + h;
 101    int dst_x2 = dst_x + w;
 102
 103
 104    I915_DBG(i915,
 105        "%s src:buf(%p)/%d+%d %d,%d dst:buf(%p)/%d+%d %d,%d sz:%dx%d\n",
 106        __FUNCTION__,
 107        src_buffer, src_pitch, src_offset, src_x, src_y,
 108        dst_buffer, dst_pitch, dst_offset, dst_x, dst_y, w, h);
 109
 110    src_pitch *= (short) cpp;
 111    dst_pitch *= (short) cpp;
 112
 113    switch (cpp) {
 114    case 1:
 115    case 2:
 116    case 3:
 117       BR13 = (((int) dst_pitch) & 0xffff) |
 118          (0xCC << 16) | (1 << 24);
 119       CMD = XY_SRC_COPY_BLT_CMD;
 120       break;
 121    case 4:
 122       BR13 =
 123          (((int) dst_pitch) & 0xffff) |
 124          (0xCC << 16) | (1 << 24) | (1 << 25);
 125       CMD =
 126          (XY_SRC_COPY_BLT_CMD | XY_SRC_COPY_BLT_WRITE_ALPHA |
 127           XY_SRC_COPY_BLT_WRITE_RGB);
 128       break;
 129    default:
 130       return;
 131    }
 132
 133    if (dst_y2 < dst_y ||
 134        dst_x2 < dst_x) {
 135       return;
 136    }
 137
 138    /* Hardware can handle negative pitches but loses the ability to do
 139     * proper overlapping blits in that case.  We don't really have a
 140     * need for either at this stage.
 141     */
 142    assert (dst_pitch > 0 && src_pitch > 0);
 143
 144
 145    if (!BEGIN_BATCH(8, 2)) {
 146       FLUSH_BATCH(NULL);
 147       assert(BEGIN_BATCH(8, 2));
 148    }
 149    OUT_BATCH(CMD);
 150    OUT_BATCH(BR13);
 151    OUT_BATCH((dst_y << 16) | dst_x);
 152    OUT_BATCH((dst_y2 << 16) | dst_x2);
 153    OUT_RELOC(dst_buffer, I915_BUFFER_ACCESS_WRITE, dst_offset);
 154    OUT_BATCH((src_y << 16) | src_x);
 155    OUT_BATCH(((int) src_pitch & 0xffff));
 156    OUT_RELOC(src_buffer, I915_BUFFER_ACCESS_READ, src_offset);
 157 }
 158
 159