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