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  1. /**************************************************************************
  2.  *
  3.  * Copyright 2007 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.   * Authors:
  29.   *   Keith Whitwell <keith@tungstengraphics.com>
  30.   */
  31.  
  32. #include "i915_state_inlines.h"
  33. #include "i915_context.h"
  34. #include "i915_state.h"
  35. #include "i915_reg.h"
  36. #include "util/u_memory.h"
  37.  
  38.  
  39. /* Convinience function to check immediate state.
  40.  */
  41.  
  42. static INLINE void set_immediate(struct i915_context *i915,
  43.                                  unsigned offset,
  44.                                  const unsigned state)
  45. {
  46.    if (i915->current.immediate[offset] == state)
  47.       return;
  48.  
  49.    i915->current.immediate[offset] = state;
  50.    i915->immediate_dirty |= 1 << offset;
  51.    i915->hardware_dirty |= I915_HW_IMMEDIATE;
  52. }
  53.  
  54.  
  55.  
  56. /***********************************************************************
  57.  * S0,S1: Vertex buffer state.
  58.  */
  59. static void upload_S0S1(struct i915_context *i915)
  60. {
  61.    unsigned LIS0, LIS1;
  62.  
  63.    /* I915_NEW_VBO
  64.     */
  65.    LIS0 = i915->vbo_offset;
  66.  
  67.    /* Need to force this */
  68.    if (i915->dirty & I915_NEW_VBO) {
  69.       i915->immediate_dirty |= 1 << I915_IMMEDIATE_S0;
  70.       i915->hardware_dirty |= I915_HW_IMMEDIATE;
  71.    }
  72.  
  73.    /* I915_NEW_VERTEX_SIZE
  74.     */
  75.    {
  76.       unsigned vertex_size = i915->current.vertex_info.size;
  77.  
  78.       LIS1 = ((vertex_size << 24) |
  79.               (vertex_size << 16));
  80.    }
  81.  
  82.    set_immediate(i915, I915_IMMEDIATE_S0, LIS0);
  83.    set_immediate(i915, I915_IMMEDIATE_S1, LIS1);
  84. }
  85.  
  86. const struct i915_tracked_state i915_upload_S0S1 = {
  87.    "imm S0 S1",
  88.    upload_S0S1,
  89.    I915_NEW_VBO | I915_NEW_VERTEX_FORMAT
  90. };
  91.  
  92.  
  93.  
  94. /***********************************************************************
  95.  * S4: Vertex format, rasterization state
  96.  */
  97. static void upload_S2S4(struct i915_context *i915)
  98. {
  99.    unsigned LIS2, LIS4;
  100.  
  101.    /* I915_NEW_VERTEX_FORMAT
  102.     */
  103.    {
  104.       LIS2 = i915->current.vertex_info.hwfmt[1];
  105.       LIS4 = i915->current.vertex_info.hwfmt[0];
  106.       assert(LIS4); /* should never be zero? */
  107.    }
  108.  
  109.    LIS4 |= i915->rasterizer->LIS4;
  110.  
  111.    set_immediate(i915, I915_IMMEDIATE_S2, LIS2);
  112.    set_immediate(i915, I915_IMMEDIATE_S4, LIS4);
  113. }
  114.  
  115. const struct i915_tracked_state i915_upload_S2S4 = {
  116.    "imm S2 S4",
  117.    upload_S2S4,
  118.    I915_NEW_RASTERIZER | I915_NEW_VERTEX_FORMAT
  119. };
  120.  
  121.  
  122.  
  123. /***********************************************************************
  124.  */
  125. static void upload_S5(struct i915_context *i915)
  126. {
  127.    unsigned LIS5 = 0;
  128.  
  129.    /* I915_NEW_DEPTH_STENCIL
  130.     */
  131.    LIS5 |= i915->depth_stencil->stencil_LIS5;
  132.    /* hope it's safe to set stencil ref value even if stencil test is disabled? */
  133.    LIS5 |= i915->stencil_ref.ref_value[0] << S5_STENCIL_REF_SHIFT;
  134.  
  135.    /* I915_NEW_BLEND
  136.     */
  137.    LIS5 |= i915->blend->LIS5;
  138.  
  139. #if 0
  140.    /* I915_NEW_RASTERIZER
  141.     */
  142.    if (i915->rasterizer->LIS7) {
  143.       LIS5 |= S5_GLOBAL_DEPTH_OFFSET_ENABLE;
  144.    }
  145. #endif
  146.  
  147.    set_immediate(i915, I915_IMMEDIATE_S5, LIS5);
  148. }
  149.  
  150. const struct i915_tracked_state i915_upload_S5 = {
  151.    "imm S5",
  152.    upload_S5,
  153.    I915_NEW_DEPTH_STENCIL | I915_NEW_BLEND | I915_NEW_RASTERIZER
  154. };
  155.  
  156.  
  157.  
  158. /***********************************************************************
  159.  */
  160. static void upload_S6(struct i915_context *i915)
  161. {
  162.    unsigned LIS6 = (2 << S6_TRISTRIP_PV_SHIFT);
  163.  
  164.    /* I915_NEW_FRAMEBUFFER
  165.     */
  166.    if (i915->framebuffer.cbufs[0])
  167.       LIS6 |= S6_COLOR_WRITE_ENABLE;
  168.  
  169.    /* I915_NEW_BLEND
  170.     */
  171.    LIS6 |= i915->blend->LIS6;
  172.  
  173.    /* I915_NEW_DEPTH
  174.     */
  175.    LIS6 |= i915->depth_stencil->depth_LIS6;
  176.  
  177.    set_immediate(i915, I915_IMMEDIATE_S6, LIS6);
  178. }
  179.  
  180. const struct i915_tracked_state i915_upload_S6 = {
  181.    "imm S6",
  182.    upload_S6,
  183.    I915_NEW_BLEND | I915_NEW_DEPTH_STENCIL | I915_NEW_FRAMEBUFFER
  184. };
  185.  
  186.  
  187.  
  188. /***********************************************************************
  189.  */
  190. static void upload_S7(struct i915_context *i915)
  191. {
  192. #if 0
  193.    unsigned LIS7;
  194.  
  195.    /* I915_NEW_RASTERIZER
  196.     */
  197.    LIS7 = i915->rasterizer->LIS7;
  198.  
  199.    set_immediate(i915, I915_IMMEDIATE_S7, LIS7);
  200. #endif
  201. }
  202.  
  203. const struct i915_tracked_state i915_upload_S7 = {
  204.    "imm S7",
  205.    upload_S7,
  206.    I915_NEW_RASTERIZER
  207. };
  208.  
  209.  
  210.  
  211. /***********************************************************************
  212.  */
  213. static const struct i915_tracked_state *atoms[] = {
  214.    &i915_upload_S0S1,
  215.    &i915_upload_S2S4,
  216.    &i915_upload_S5,
  217.    &i915_upload_S6,
  218.    &i915_upload_S7
  219. };
  220.  
  221. static void update_immediate(struct i915_context *i915)
  222. {
  223.    int i;
  224.  
  225.    for (i = 0; i < Elements(atoms); i++)
  226.       if (i915->dirty & atoms[i]->dirty)
  227.          atoms[i]->update(i915);
  228. }
  229.  
  230. struct i915_tracked_state i915_hw_immediate = {
  231.    "immediate",
  232.    update_immediate,
  233.    ~0 /* all state atoms, becuase we do internal checking */
  234. };
  235.