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 /* All state expressable with the LOAD_STATE_IMMEDIATE_1 packet.
  40  * Would like to opportunistically recombine all these fragments into
  41  * a single packet containing only what has changed, but for now emit
  42  * as multiple packets.
  43  */
  44
  45
  46
  47
  48 /***********************************************************************
  49  * S0,S1: Vertex buffer state.
  50  */
  51 static void upload_S0S1(struct i915_context *i915)
  52 {
  53    unsigned LIS0, LIS1;
  54
  55    /* I915_NEW_VBO
  56     */
  57    LIS0 = i915->vbo_offset;
  58
  59    /* I915_NEW_VERTEX_SIZE
  60     */
  61    /* XXX do this where the vertex size is calculated! */
  62    {
  63       unsigned vertex_size = i915->current.vertex_info.size;
  64
  65       LIS1 = ((vertex_size << 24) |
  66               (vertex_size << 16));
  67    }
  68
  69    /* I915_NEW_VBO
  70     */
  71    if (1 ||
  72        i915->current.immediate[I915_IMMEDIATE_S0] != LIS0 ||
  73        i915->current.immediate[I915_IMMEDIATE_S1] != LIS1)
  74    {
  75       i915->current.immediate[I915_IMMEDIATE_S0] = LIS0;
  76       i915->current.immediate[I915_IMMEDIATE_S1] = LIS1;
  77       i915->hardware_dirty |= I915_HW_IMMEDIATE;
  78    }
  79 }
  80
  81 const struct i915_tracked_state i915_upload_S0S1 = {
  82    "imm S0 S1",
  83    upload_S0S1,
  84    I915_NEW_VBO | I915_NEW_VERTEX_FORMAT
  85 };
  86
  87
  88
  89 /***********************************************************************
  90  * S4: Vertex format, rasterization state
  91  */
  92 static void upload_S2S4(struct i915_context *i915)
  93 {
  94    unsigned LIS2, LIS4;
  95
  96    /* I915_NEW_VERTEX_FORMAT
  97     */
  98    {
  99       LIS2 = i915->current.vertex_info.hwfmt[1];
 100       LIS4 = i915->current.vertex_info.hwfmt[0];
 101       /*
 102       debug_printf("LIS2: 0x%x  LIS4: 0x%x\n", LIS2, LIS4);
 103       */
 104       assert(LIS4); /* should never be zero? */
 105    }
 106
 107    LIS4 |= i915->rasterizer->LIS4;
 108
 109    if (LIS2 != i915->current.immediate[I915_IMMEDIATE_S2] ||
 110        LIS4 != i915->current.immediate[I915_IMMEDIATE_S4]) {
 111
 112       i915->current.immediate[I915_IMMEDIATE_S2] = LIS2;
 113       i915->current.immediate[I915_IMMEDIATE_S4] = LIS4;
 114       i915->hardware_dirty |= I915_HW_IMMEDIATE;
 115    }
 116 }
 117
 118 const struct i915_tracked_state i915_upload_S2S4 = {
 119    "imm S2 S4",
 120    upload_S2S4,
 121    I915_NEW_RASTERIZER | I915_NEW_VERTEX_FORMAT
 122 };
 123
 124
 125
 126 /***********************************************************************
 127  */
 128 static void upload_S5(struct i915_context *i915)
 129 {
 130    unsigned LIS5 = 0;
 131
 132    /* I915_NEW_DEPTH_STENCIL
 133     */
 134    LIS5 |= i915->depth_stencil->stencil_LIS5;
 135    /* hope it's safe to set stencil ref value even if stencil test is disabled? */
 136    LIS5 |= i915->stencil_ref.ref_value[0] << S5_STENCIL_REF_SHIFT;
 137
 138    /* I915_NEW_BLEND
 139     */
 140    LIS5 |= i915->blend->LIS5;
 141
 142 #if 0
 143    /* I915_NEW_RASTERIZER
 144     */
 145    if (i915->state.Polygon->OffsetFill) {
 146       LIS5 |= S5_GLOBAL_DEPTH_OFFSET_ENABLE;
 147    }
 148 #endif
 149
 150    if (LIS5 != i915->current.immediate[I915_IMMEDIATE_S5]) {
 151       i915->current.immediate[I915_IMMEDIATE_S5] = LIS5;
 152       i915->hardware_dirty |= I915_HW_IMMEDIATE;
 153    }
 154 }
 155
 156 const struct i915_tracked_state i915_upload_S5 = {
 157    "imm S5",
 158    upload_S5,
 159    I915_NEW_DEPTH_STENCIL | I915_NEW_BLEND | I915_NEW_RASTERIZER
 160 };
 161
 162
 163
 164 /***********************************************************************
 165  */
 166 static void upload_S6(struct i915_context *i915)
 167 {
 168    unsigned LIS6 = (2 << S6_TRISTRIP_PV_SHIFT);
 169
 170    /* I915_NEW_FRAMEBUFFER
 171     */
 172    if (i915->framebuffer.cbufs[0])
 173       LIS6 |= S6_COLOR_WRITE_ENABLE;
 174
 175    /* I915_NEW_BLEND
 176     */
 177    LIS6 |= i915->blend->LIS6;
 178
 179    /* I915_NEW_DEPTH
 180     */
 181    LIS6 |= i915->depth_stencil->depth_LIS6;
 182
 183    if (LIS6 != i915->current.immediate[I915_IMMEDIATE_S6]) {
 184       i915->current.immediate[I915_IMMEDIATE_S6] = LIS6;
 185       i915->hardware_dirty |= I915_HW_IMMEDIATE;
 186    }
 187 }
 188
 189 const struct i915_tracked_state i915_upload_S6 = {
 190    "imm s6",
 191    upload_S6,
 192    I915_NEW_BLEND | I915_NEW_DEPTH_STENCIL | I915_NEW_FRAMEBUFFER
 193 };
 194
 195
 196
 197 /***********************************************************************
 198  */
 199 static void upload_S7(struct i915_context *i915)
 200 {
 201    unsigned LIS7;
 202
 203    /* I915_NEW_RASTERIZER
 204     */
 205    LIS7 = i915->rasterizer->LIS7;
 206
 207    if (LIS7 != i915->current.immediate[I915_IMMEDIATE_S7]) {
 208       i915->current.immediate[I915_IMMEDIATE_S7] = LIS7;
 209       i915->hardware_dirty |= I915_HW_IMMEDIATE;
 210    }
 211 }
 212
 213 const struct i915_tracked_state i915_upload_S7 = {
 214    "imm S7",
 215    upload_S7,
 216    I915_NEW_RASTERIZER
 217 };
 218
 219
 220
 221 /***********************************************************************
 222  */
 223 static const struct i915_tracked_state *atoms[] = {
 224    &i915_upload_S0S1,
 225    &i915_upload_S2S4,
 226    &i915_upload_S5,
 227    &i915_upload_S6,
 228    &i915_upload_S7
 229 };
 230
 231 static void update_immediate(struct i915_context *i915)
 232 {
 233    int i;
 234
 235    for (i = 0; i < Elements(atoms); i++)
 236       if (i915->dirty & atoms[i]->dirty)
 237          atoms[i]->update(i915);
 238 }
 239
 240 struct i915_tracked_state i915_hw_immediate = {
 241    "immediate",
 242    update_immediate,
 243    ~0 /* all state atoms, becuase we do internal checking */
 244 };