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
  35 void
  36 i915_fill_blit(struct i915_context *i915,
  37                unsigned cpp,
  38                unsigned rgba_mask,
  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(DBG_BLIT, "%s dst:buf(%p)/%d+%d %d,%d sz:%dx%d\n",
  50             __FUNCTION__, dst_buffer, dst_pitch, dst_offset, x, y, w, h);
  51
  52    switch (cpp) {
  53    case 1:
  54    case 2:
  55    case 3:
  56       BR13 = (((int) dst_pitch) & 0xffff) |
  57          (0xF0 << 16) | (1 << 24);
  58       CMD = XY_COLOR_BLT_CMD;
  59       break;
  60    case 4:
  61       BR13 = (((int) dst_pitch) & 0xffff) |
  62          (0xF0 << 16) | (1 << 24) | (1 << 25);
  63       CMD = (XY_COLOR_BLT_CMD | rgba_mask);
  64       break;
  65    default:
  66       return;
  67    }
  68
  69    if (!BEGIN_BATCH(6, 1)) {
  70       FLUSH_BATCH(NULL);
  71       assert(BEGIN_BATCH(6, 1));
  72    }
  73    OUT_BATCH(CMD);
  74    OUT_BATCH(BR13);
  75    OUT_BATCH((y << 16) | x);
  76    OUT_BATCH(((y + h) << 16) | (x + w));
  77    OUT_RELOC(dst_buffer, I915_USAGE_2D_TARGET, dst_offset);
  78    OUT_BATCH(color);
  79    FLUSH_BATCH(NULL);
  80 }
  81
  82 void
  83 i915_copy_blit(struct i915_context *i915,
  84                unsigned cpp,
  85                unsigned short src_pitch,
  86                struct i915_winsys_buffer *src_buffer,
  87                unsigned src_offset,
  88                unsigned short dst_pitch,
  89                struct i915_winsys_buffer *dst_buffer,
  90                unsigned dst_offset,
  91                short src_x, short src_y,
  92                short dst_x, short dst_y,
  93                short w, short h)
  94 {
  95    unsigned CMD, BR13;
  96    int dst_y2 = dst_y + h;
  97    int dst_x2 = dst_x + w;
  98
  99
 100    I915_DBG(DBG_BLIT,
 101             "%s src:buf(%p)/%d+%d %d,%d dst:buf(%p)/%d+%d %d,%d sz:%dx%d\n",
 102             __FUNCTION__,
 103             src_buffer, src_pitch, src_offset, src_x, src_y,
 104             dst_buffer, dst_pitch, dst_offset, dst_x, dst_y, w, h);
 105
 106    switch (cpp) {
 107    case 1:
 108    case 2:
 109    case 3:
 110       BR13 = (((int) dst_pitch) & 0xffff) |
 111          (0xCC << 16) | (1 << 24);
 112       CMD = XY_SRC_COPY_BLT_CMD;
 113       break;
 114    case 4:
 115       BR13 = (((int) dst_pitch) & 0xffff) |
 116              (0xCC << 16) | (1 << 24) | (1 << 25);
 117       CMD = (XY_SRC_COPY_BLT_CMD | XY_SRC_COPY_BLT_WRITE_ALPHA |
 118             XY_SRC_COPY_BLT_WRITE_RGB);
 119       break;
 120    default:
 121       return;
 122    }
 123
 124    if (dst_y2 < dst_y || dst_x2 < dst_x) {
 125       return;
 126    }
 127
 128    /* Hardware can handle negative pitches but loses the ability to do
 129     * proper overlapping blits in that case.  We don't really have a
 130     * need for either at this stage.
 131     */
 132    assert (dst_pitch > 0 && src_pitch > 0);
 133
 134    if (!BEGIN_BATCH(8, 2)) {
 135       FLUSH_BATCH(NULL);
 136       assert(BEGIN_BATCH(8, 2));
 137    }
 138    OUT_BATCH(CMD);
 139    OUT_BATCH(BR13);
 140    OUT_BATCH((dst_y << 16) | dst_x);
 141    OUT_BATCH((dst_y2 << 16) | dst_x2);
 142    OUT_RELOC(dst_buffer, I915_USAGE_2D_TARGET, dst_offset);
 143    OUT_BATCH((src_y << 16) | src_x);
 144    OUT_BATCH(((int) src_pitch & 0xffff));
 145    OUT_RELOC(src_buffer, I915_USAGE_2D_SOURCE, src_offset);
 146    FLUSH_BATCH(NULL);
 147 }