src/gallium/drivers/i915/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_blit.h"
  30 #include "i915_reg.h"
  31 #include "i915_batch.h"
  32 #include "i915_debug.h"
  33
  34 #define FILE_DEBUG_FLAG DEBUG_BLIT
  35
  36 void
  37 i915_fill_blit(struct i915_context *i915,
  38                unsigned cpp,
  39                unsigned short dst_pitch,
  40                struct i915_winsys_buffer *dst_buffer,
  41                unsigned dst_offset,
  42                short x, short y,
  43                short w, short h,
  44                unsigned color)
  45 {
  46    unsigned BR13, CMD;
  47
  48
  49    I915_DBG(i915,
  50       "%s dst:buf(%p)/%d+%d %d,%d sz:%dx%d\n",
  51       __FUNCTION__,
  52       dst_buffer, dst_pitch, dst_offset, x, y, w, h);
  53
  54    switch (cpp) {
  55    case 1:
  56    case 2:
  57    case 3:
  58       BR13 = (((int) dst_pitch) & 0xffff) |
  59          (0xF0 << 16) | (1 << 24);
  60       CMD = XY_COLOR_BLT_CMD;
  61       break;
  62    case 4:
  63       BR13 = (((int) dst_pitch) & 0xffff) |
  64          (0xF0 << 16) | (1 << 24) | (1 << 25);
  65       CMD = (XY_COLOR_BLT_CMD | XY_COLOR_BLT_WRITE_ALPHA |
  66              XY_COLOR_BLT_WRITE_RGB);
  67       break;
  68    default:
  69       return;
  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_USAGE_2D_TARGET, dst_offset);
  81    OUT_BATCH(color);
  82    FLUSH_BATCH(NULL);
  83 }
  84
  85 void
  86 i915_copy_blit(struct i915_context *i915,
  87                unsigned do_flip,
  88                unsigned cpp,
  89                unsigned short src_pitch,
  90                struct i915_winsys_buffer *src_buffer,
  91                unsigned src_offset,
  92                unsigned short dst_pitch,
  93                struct i915_winsys_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    switch (cpp) {
 111    case 1:
 112    case 2:
 113    case 3:
 114       BR13 = (((int) dst_pitch) & 0xffff) |
 115          (0xCC << 16) | (1 << 24);
 116       CMD = XY_SRC_COPY_BLT_CMD;
 117       break;
 118    case 4:
 119       BR13 = (((int) dst_pitch) & 0xffff) |
 120              (0xCC << 16) | (1 << 24) | (1 << 25);
 121       CMD = (XY_SRC_COPY_BLT_CMD | XY_SRC_COPY_BLT_WRITE_ALPHA |
 122             XY_SRC_COPY_BLT_WRITE_RGB);
 123       break;
 124    default:
 125       return;
 126    }
 127
 128    if (dst_y2 < dst_y || dst_x2 < dst_x) {
 129       return;
 130    }
 131
 132    /* Hardware can handle negative pitches but loses the ability to do
 133     * proper overlapping blits in that case.  We don't really have a
 134     * need for either at this stage.
 135     */
 136    assert (dst_pitch > 0 && src_pitch > 0);
 137
 138    if (!BEGIN_BATCH(8, 2)) {
 139       FLUSH_BATCH(NULL);
 140       assert(BEGIN_BATCH(8, 2));
 141    }
 142    OUT_BATCH(CMD);
 143    OUT_BATCH(BR13);
 144    OUT_BATCH((dst_y << 16) | dst_x);
 145    OUT_BATCH((dst_y2 << 16) | dst_x2);
 146    OUT_RELOC(dst_buffer, I915_USAGE_2D_TARGET, dst_offset);
 147    OUT_BATCH((src_y << 16) | src_x);
 148    OUT_BATCH(((int) src_pitch & 0xffff));
 149    OUT_RELOC(src_buffer, I915_USAGE_2D_SOURCE, src_offset);
 150    FLUSH_BATCH(NULL);
 151 }