src/gallium/drivers/i915/i915_state_immediate.c

   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    unsigned LIS7;
 193
 194    /* I915_NEW_RASTERIZER
 195     */
 196    LIS7 = i915->rasterizer->LIS7;
 197
 198 #if 0
 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 };