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 rgba_mask,
  40                unsigned short dst_pitch,
  41                struct i915_winsys_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 | rgba_mask);
  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 cpp,
  88                unsigned short src_pitch,
  89                struct i915_winsys_buffer *src_buffer,
  90                unsigned src_offset,
  91                unsigned short dst_pitch,
  92                struct i915_winsys_buffer *dst_buffer,
  93                unsigned dst_offset,
  94                short src_x, short src_y,
  95                short dst_x, short dst_y,
  96                short w, short h)
  97 {
  98    unsigned CMD, BR13;
  99    int dst_y2 = dst_y + h;
 100    int dst_x2 = dst_x + w;
 101
 102
 103    I915_DBG(i915,
 104       "%s src:buf(%p)/%d+%d %d,%d dst:buf(%p)/%d+%d %d,%d sz:%dx%d\n",
 105       __FUNCTION__,
 106       src_buffer, src_pitch, src_offset, src_x, src_y,
 107       dst_buffer, dst_pitch, dst_offset, dst_x, dst_y, w, h);
 108
 109    switch (cpp) {
 110    case 1:
 111    case 2:
 112    case 3:
 113       BR13 = (((int) dst_pitch) & 0xffff) |
 114          (0xCC << 16) | (1 << 24);
 115       CMD = XY_SRC_COPY_BLT_CMD;
 116       break;
 117    case 4:
 118       BR13 = (((int) dst_pitch) & 0xffff) |
 119              (0xCC << 16) | (1 << 24) | (1 << 25);
 120       CMD = (XY_SRC_COPY_BLT_CMD | XY_SRC_COPY_BLT_WRITE_ALPHA |
 121             XY_SRC_COPY_BLT_WRITE_RGB);
 122       break;
 123    default:
 124       return;
 125    }
 126
 127    if (dst_y2 < dst_y || dst_x2 < dst_x) {
 128       return;
 129    }
 130
 131    /* Hardware can handle negative pitches but loses the ability to do
 132     * proper overlapping blits in that case.  We don't really have a
 133     * need for either at this stage.
 134     */
 135    assert (dst_pitch > 0 && src_pitch > 0);
 136
 137    if (!BEGIN_BATCH(8, 2)) {
 138       FLUSH_BATCH(NULL);
 139       assert(BEGIN_BATCH(8, 2));
 140    }
 141    OUT_BATCH(CMD);
 142    OUT_BATCH(BR13);
 143    OUT_BATCH((dst_y << 16) | dst_x);
 144    OUT_BATCH((dst_y2 << 16) | dst_x2);
 145    OUT_RELOC(dst_buffer, I915_USAGE_2D_TARGET, dst_offset);
 146    OUT_BATCH((src_y << 16) | src_x);
 147    OUT_BATCH(((int) src_pitch & 0xffff));
 148    OUT_RELOC(src_buffer, I915_USAGE_2D_SOURCE, src_offset);
 149    FLUSH_BATCH(NULL);
 150 }