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  1. /**************************************************************************
  2.  *
  3.  * Copyright 2003 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 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 VMWARE 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. #include "i915_batch.h"
  29. #include "i915_state_inlines.h"
  30. #include "i915_context.h"
  31. #include "i915_reg.h"
  32. #include "i915_state.h"
  33.  
  34. #include "util/u_memory.h"
  35. #include "util/u_pack_color.h"
  36.  
  37.  
  38. /* State that we have chosen to store in the DYNAMIC segment of the
  39.  * i915 indirect state mechanism.
  40.  *
  41.  * Can't cache these in the way we do the static state, as there is no
  42.  * start/size in the command packet, instead an 'end' value that gets
  43.  * incremented.
  44.  *
  45.  * Additionally, there seems to be a requirement to re-issue the full
  46.  * (active) state every time a 4kb boundary is crossed.
  47.  */
  48.  
  49. static INLINE void set_dynamic(struct i915_context *i915,
  50.                                unsigned offset,
  51.                                const unsigned state)
  52. {
  53.    if (i915->current.dynamic[offset] == state)
  54.       return;
  55.  
  56.    i915->current.dynamic[offset] = state;
  57.    i915->dynamic_dirty |= 1 << offset;
  58.    i915->hardware_dirty |= I915_HW_DYNAMIC;
  59. }
  60.  
  61.  
  62.  
  63. static INLINE void set_dynamic_array(struct i915_context *i915,
  64.                                      unsigned offset,
  65.                                      const unsigned *src,
  66.                                      unsigned dwords)
  67. {
  68.    unsigned i;
  69.  
  70.    if (!memcmp(src, &i915->current.dynamic[offset], dwords * 4))
  71.       return;
  72.  
  73.    for (i = 0; i < dwords; i++) {
  74.       i915->current.dynamic[offset + i] = src[i];
  75.       i915->dynamic_dirty |= 1 << (offset + i);
  76.    }
  77.  
  78.    i915->hardware_dirty |= I915_HW_DYNAMIC;
  79. }
  80.  
  81.  
  82.  
  83. /***********************************************************************
  84.  * Modes4: stencil masks and logicop
  85.  */
  86. static void upload_MODES4(struct i915_context *i915)
  87. {
  88.    unsigned modes4 = 0;
  89.  
  90.    /* I915_NEW_STENCIL
  91.     */
  92.    modes4 |= i915->depth_stencil->stencil_modes4;
  93.  
  94.    /* I915_NEW_BLEND
  95.      */
  96.    modes4 |= i915->blend->modes4;
  97.  
  98.    set_dynamic(i915, I915_DYNAMIC_MODES4, modes4);
  99. }
  100.  
  101. const struct i915_tracked_state i915_upload_MODES4 = {
  102.    "MODES4",
  103.    upload_MODES4,
  104.    I915_NEW_BLEND | I915_NEW_DEPTH_STENCIL
  105. };
  106.  
  107.  
  108.  
  109. /***********************************************************************
  110.  */
  111. static void upload_BFO(struct i915_context *i915)
  112. {
  113.    unsigned bfo[2];
  114.    bfo[0] = i915->depth_stencil->bfo[0];
  115.    bfo[1] = i915->depth_stencil->bfo[1];
  116.    /* I don't get it only allowed to set a ref mask when the enable bit is set? */
  117.    if (bfo[0] & BFO_ENABLE_STENCIL_REF) {
  118.       bfo[0] |= i915->stencil_ref.ref_value[1] << BFO_STENCIL_REF_SHIFT;
  119.    }
  120.  
  121.    set_dynamic_array(i915, I915_DYNAMIC_BFO_0, bfo, 2);
  122. }
  123.  
  124. const struct i915_tracked_state i915_upload_BFO = {
  125.    "BFO",
  126.    upload_BFO,
  127.    I915_NEW_DEPTH_STENCIL
  128. };
  129.  
  130.  
  131.  
  132. /***********************************************************************
  133.  */
  134. static void upload_BLENDCOLOR(struct i915_context *i915)
  135. {
  136.    unsigned bc[2];
  137.  
  138.    memset(bc, 0, sizeof(bc));
  139.  
  140.    /* I915_NEW_BLEND
  141.     */
  142.    {
  143.       const float *color = i915->blend_color.color;
  144.  
  145.       bc[0] = _3DSTATE_CONST_BLEND_COLOR_CMD;
  146.       bc[1] = pack_ui32_float4(color[0],
  147.                                color[1],
  148.                                color[2],
  149.                                color[3]);
  150.    }
  151.  
  152.    set_dynamic_array(i915, I915_DYNAMIC_BC_0, bc, 2);
  153. }
  154.  
  155. const struct i915_tracked_state i915_upload_BLENDCOLOR = {
  156.    "BLENDCOLOR",
  157.    upload_BLENDCOLOR,
  158.    I915_NEW_BLEND
  159. };
  160.  
  161.  
  162.  
  163. /***********************************************************************
  164.  */
  165. static void upload_IAB(struct i915_context *i915)
  166. {
  167.    unsigned iab = i915->blend->iab;
  168.  
  169.    set_dynamic(i915, I915_DYNAMIC_IAB, iab);
  170. }
  171.  
  172. const struct i915_tracked_state i915_upload_IAB = {
  173.    "IAB",
  174.    upload_IAB,
  175.    I915_NEW_BLEND
  176. };
  177.  
  178.  
  179.  
  180. /***********************************************************************
  181.  */
  182. static void upload_DEPTHSCALE(struct i915_context *i915)
  183. {
  184.    set_dynamic_array(i915, I915_DYNAMIC_DEPTHSCALE_0,
  185.                      &i915->rasterizer->ds[0].u, 2);
  186. }
  187.  
  188. const struct i915_tracked_state i915_upload_DEPTHSCALE = {
  189.    "DEPTHSCALE",
  190.    upload_DEPTHSCALE,
  191.    I915_NEW_RASTERIZER
  192. };
  193.  
  194.  
  195.  
  196. /***********************************************************************
  197.  * Polygon stipple
  198.  *
  199.  * The i915 supports a 4x4 stipple natively, GL wants 32x32.
  200.  * Fortunately stipple is usually a repeating pattern.
  201.  *
  202.  * XXX: does stipple pattern need to be adjusted according to
  203.  * the window position?
  204.  *
  205.  * XXX: possibly need workaround for conform paths test.
  206.  */
  207. static void upload_STIPPLE(struct i915_context *i915)
  208. {
  209.    unsigned st[2];
  210.  
  211.    st[0] = _3DSTATE_STIPPLE;
  212.    st[1] = 0;
  213.  
  214.    /* I915_NEW_RASTERIZER
  215.     */
  216.    st[1] |= i915->rasterizer->st;
  217.  
  218.    /* I915_NEW_STIPPLE
  219.     */
  220.    {
  221.       const ubyte *mask = (const ubyte *)i915->poly_stipple.stipple;
  222.       ubyte p[4];
  223.  
  224.       p[0] = mask[12] & 0xf;
  225.       p[1] = mask[8] & 0xf;
  226.       p[2] = mask[4] & 0xf;
  227.       p[3] = mask[0] & 0xf;
  228.  
  229.       /* Not sure what to do about fallbacks, so for now just dont:
  230.        */
  231.       st[1] |= ((p[0] << 0) |
  232.                 (p[1] << 4) |
  233.                 (p[2] << 8) |
  234.                 (p[3] << 12));
  235.    }
  236.  
  237.    set_dynamic_array(i915, I915_DYNAMIC_STP_0, st, 2);
  238. }
  239.  
  240. const struct i915_tracked_state i915_upload_STIPPLE = {
  241.    "STIPPLE",
  242.    upload_STIPPLE,
  243.    I915_NEW_RASTERIZER | I915_NEW_STIPPLE
  244. };
  245.  
  246.  
  247.  
  248. /***********************************************************************
  249.  * Scissor enable
  250.  */
  251. static void upload_SCISSOR_ENABLE( struct i915_context *i915 )
  252. {
  253.    set_dynamic(i915, I915_DYNAMIC_SC_ENA_0, i915->rasterizer->sc[0]);
  254. }
  255.  
  256. const struct i915_tracked_state i915_upload_SCISSOR_ENABLE = {
  257.    "SCISSOR ENABLE",
  258.    upload_SCISSOR_ENABLE,
  259.    I915_NEW_RASTERIZER
  260. };
  261.  
  262.  
  263.  
  264. /***********************************************************************
  265.  * Scissor rect
  266.  */
  267. static void upload_SCISSOR_RECT(struct i915_context *i915)
  268. {
  269.    unsigned x1 = i915->scissor.minx;
  270.    unsigned y1 = i915->scissor.miny;
  271.    unsigned x2 = i915->scissor.maxx - 1;
  272.    unsigned y2 = i915->scissor.maxy - 1;
  273.    unsigned sc[3];
  274.  
  275.    sc[0] = _3DSTATE_SCISSOR_RECT_0_CMD;
  276.    sc[1] = (y1 << 16) | (x1 & 0xffff);
  277.    sc[2] = (y2 << 16) | (x2 & 0xffff);
  278.  
  279.    set_dynamic_array(i915, I915_DYNAMIC_SC_RECT_0, sc, 3);
  280. }
  281.  
  282. const struct i915_tracked_state i915_upload_SCISSOR_RECT = {
  283.    "SCISSOR RECT",
  284.    upload_SCISSOR_RECT,
  285.    I915_NEW_SCISSOR
  286. };
  287.  
  288.  
  289.  
  290. /***********************************************************************
  291.  */
  292. static const struct i915_tracked_state *atoms[] = {
  293.    &i915_upload_MODES4,
  294.    &i915_upload_BFO,
  295.    &i915_upload_BLENDCOLOR,
  296.    &i915_upload_IAB,
  297.    &i915_upload_DEPTHSCALE,
  298.    &i915_upload_STIPPLE,
  299.    &i915_upload_SCISSOR_ENABLE,
  300.    &i915_upload_SCISSOR_RECT
  301. };
  302.  
  303. /* These will be dynamic indirect state commands, but for now just end
  304.  * up on the batch buffer with everything else.
  305.  */
  306. static void update_dynamic(struct i915_context *i915)
  307. {
  308.    int i;
  309.  
  310.    for (i = 0; i < Elements(atoms); i++)
  311.       if (i915->dirty & atoms[i]->dirty)
  312.          atoms[i]->update(i915);
  313. }
  314.  
  315. struct i915_tracked_state i915_hw_dynamic = {
  316.    "dynamic",
  317.    update_dynamic,
  318.    ~0 /* all state atoms, because we do internal checking */
  319. };
  320.