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  1. /**************************************************************************
  2.  *
  3.  * Copyright 2009 VMware, Inc.
  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 SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15.  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16.  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  17.  * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
  18.  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  19.  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  20.  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  21.  *
  22.  * The above copyright notice and this permission notice (including the
  23.  * next paragraph) shall be included in all copies or substantial portions
  24.  * of the Software.
  25.  *
  26.  *
  27.  **************************************************************************/
  28.  
  29. /**
  30.  * @file
  31.  * GDI software rasterizer support.
  32.  *
  33.  * @author Jose Fonseca <jfonseca@vmware.com>
  34.  */
  35.  
  36. #include "pipe/p_format.h"
  37. #include "pipe/p_context.h"
  38. #include "util/u_inlines.h"
  39. #include "util/u_format.h"
  40. #include "util/u_math.h"
  41. #include "util/u_memory.h"
  42. #include "state_tracker/sw_winsys.h"
  43. #include <kos32sys.h>
  44. #include "kos_sw_winsys.h"
  45.  
  46.  
  47. struct kos_sw_displaytarget
  48. {
  49.    enum pipe_format format;
  50.    unsigned width;
  51.    unsigned height;
  52.    unsigned stride;
  53.  
  54.    unsigned size;
  55.  
  56.    void *data;
  57.  
  58. //   BITMAPINFO bmi;
  59. };
  60.  
  61.  
  62. /** Cast wrapper */
  63. static INLINE struct kos_sw_displaytarget *
  64. kos_sw_displaytarget( struct sw_displaytarget *buf )
  65. {
  66.    return (struct kos_sw_displaytarget *)buf;
  67. }
  68.  
  69.  
  70. static boolean
  71. kos_sw_is_displaytarget_format_supported( struct sw_winsys *ws,
  72.                                                 unsigned tex_usage,
  73.                                                 enum pipe_format format )
  74. {
  75.    switch(format) {
  76.    case PIPE_FORMAT_B8G8R8X8_UNORM:
  77.    case PIPE_FORMAT_B8G8R8A8_UNORM:
  78.       return TRUE;
  79.  
  80.    /* TODO: Support other formats possible with BMPs, as described in
  81.     * http://msdn.microsoft.com/en-us/library/dd183376(VS.85).aspx */
  82.  
  83.    default:
  84.       return FALSE;
  85.    }
  86. }
  87.  
  88.  
  89. static void *
  90. kos_sw_displaytarget_map(struct sw_winsys *ws,
  91.                                struct sw_displaytarget *dt,
  92.                                unsigned flags )
  93. {
  94.    struct kos_sw_displaytarget *gdt = kos_sw_displaytarget(dt);
  95.  
  96.    return gdt->data;
  97. }
  98.  
  99.  
  100. static void
  101. kos_sw_displaytarget_unmap(struct sw_winsys *ws,
  102.                                  struct sw_displaytarget *dt )
  103. {
  104.  
  105. }
  106.  
  107.  
  108. static void
  109. kos_sw_displaytarget_destroy(struct sw_winsys *winsys,
  110.                                    struct sw_displaytarget *dt)
  111. {
  112.    struct kos_sw_displaytarget *gdt = kos_sw_displaytarget(dt);
  113.  
  114.    user_free(gdt->data);
  115.    FREE(gdt);
  116. }
  117.  
  118.  
  119. static struct sw_displaytarget *
  120. kos_sw_displaytarget_create(struct sw_winsys *winsys,
  121.                                   unsigned tex_usage,
  122.                                   enum pipe_format format,
  123.                                   unsigned width, unsigned height,
  124.                                   unsigned alignment,
  125.                                   unsigned *stride)
  126. {
  127.    struct kos_sw_displaytarget *gdt;
  128.    unsigned cpp;
  129.    unsigned bpp;
  130.  
  131.    gdt = CALLOC_STRUCT(kos_sw_displaytarget);
  132.    if(!gdt)
  133.       goto no_gdt;
  134.  
  135.    gdt->format = format;
  136.    gdt->width = width;
  137.    gdt->height = height;
  138.  
  139.    bpp = util_format_get_blocksizebits(format);
  140.    cpp = util_format_get_blocksize(format);
  141.  
  142.    gdt->stride = align(width * cpp, alignment);
  143.    gdt->size = gdt->stride * height;
  144.  
  145.    gdt->data = user_alloc(gdt->size);
  146.    if(!gdt->data)
  147.       goto no_data;
  148.  
  149.    *stride = gdt->stride;
  150.    return (struct sw_displaytarget *)gdt;
  151.  
  152. no_data:
  153.    FREE(gdt);
  154. no_gdt:
  155.    return NULL;
  156. }
  157.  
  158.  
  159. static struct sw_displaytarget *
  160. kos_sw_displaytarget_from_handle(struct sw_winsys *winsys,
  161.                                  const struct pipe_resource *templet,
  162.                                  struct winsys_handle *whandle,
  163.                                  unsigned *stride)
  164. {
  165.    assert(0);
  166.    return NULL;
  167. }
  168.  
  169.  
  170. static boolean
  171. kos_sw_displaytarget_get_handle(struct sw_winsys *winsys,
  172.                                 struct sw_displaytarget *dt,
  173.                                 struct winsys_handle *whandle)
  174. {
  175.    assert(0);
  176.    return FALSE;
  177. }
  178.  
  179.  
  180. void
  181. kos_sw_display( struct sw_winsys *winsys,
  182.                 struct sw_displaytarget *dt)
  183. {
  184.     struct kos_sw_displaytarget *gdt = kos_sw_displaytarget(dt);
  185.  
  186. //    StretchDIBits(hDC,
  187. //                  0, 0, gdt->width, gdt->height,
  188. //                  0, 0, gdt->width, gdt->height,
  189. //                  gdt->data, &gdt->bmi, 0, SRCCOPY);
  190. }
  191.  
  192. static void
  193. kos_sw_displaytarget_display(struct sw_winsys *winsys,
  194.                              struct sw_displaytarget *dt,
  195.                              void *context_private)
  196. {
  197.     /* nasty:
  198.      */
  199. //    HDC hDC = (HDC)context_private;
  200.  
  201.     kos_sw_display(winsys, dt);
  202. }
  203.  
  204.  
  205. static void
  206. kos_sw_destroy(struct sw_winsys *winsys)
  207. {
  208.    FREE(winsys);
  209. }
  210.  
  211. struct sw_winsys *
  212. kos_create_sw_winsys(void)
  213. {
  214.    static struct sw_winsys *winsys;
  215.  
  216.    winsys = CALLOC_STRUCT(sw_winsys);
  217.    if(!winsys)
  218.       return NULL;
  219.  
  220.    winsys->destroy = kos_sw_destroy;
  221.    winsys->is_displaytarget_format_supported = kos_sw_is_displaytarget_format_supported;
  222.    winsys->displaytarget_create = kos_sw_displaytarget_create;
  223.    winsys->displaytarget_from_handle = kos_sw_displaytarget_from_handle;
  224.    winsys->displaytarget_get_handle = kos_sw_displaytarget_get_handle;
  225.    winsys->displaytarget_map = kos_sw_displaytarget_map;
  226.    winsys->displaytarget_unmap = kos_sw_displaytarget_unmap;
  227.    winsys->displaytarget_display = kos_sw_displaytarget_display;
  228.    winsys->displaytarget_destroy = kos_sw_displaytarget_destroy;
  229.  
  230.    return winsys;
  231. }
  232.  
  233.