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    /* INTEL_NEW_VBO */
  56    /* TODO: re-use vertex buffers here? */
  57    LIS0 = i915->vbo_offset;
  58
  59    /* INTEL_NEW_VERTEX_SIZE -- do this where the vertex size is calculated!
  60     */
  61    {
  62       unsigned vertex_size = i915->current.vertex_info.size;
  63
  64       LIS1 = ((vertex_size << 24) |
  65               (vertex_size << 16));
  66    }
  67
  68    /* INTEL_NEW_VBO */
  69    /* TODO: use a vertex generation number to track vbo changes */
  70    if (1 ||
  71        i915->current.immediate[I915_IMMEDIATE_S0] != LIS0 ||
  72        i915->current.immediate[I915_IMMEDIATE_S1] != LIS1)
  73    {
  74       i915->current.immediate[I915_IMMEDIATE_S0] = LIS0;
  75       i915->current.immediate[I915_IMMEDIATE_S1] = LIS1;
  76       i915->hardware_dirty |= I915_HW_IMMEDIATE;
  77    }
  78 }
  79
  80 const struct i915_tracked_state i915_upload_S0S1 = {
  81    I915_NEW_VBO | I915_NEW_VERTEX_FORMAT,
  82    upload_S0S1
  83 };
  84
  85
  86
  87
  88 /***********************************************************************
  89  * S4: Vertex format, rasterization state
  90  */
  91 static void upload_S2S4(struct i915_context *i915)
  92 {
  93    unsigned LIS2, LIS4;
  94
  95    /* I915_NEW_VERTEX_FORMAT */
  96    {
  97       LIS2 = i915->current.vertex_info.hwfmt[1];
  98       LIS4 = i915->current.vertex_info.hwfmt[0];
  99       /*
 100       debug_printf("LIS2: 0x%x  LIS4: 0x%x\n", LIS2, LIS4);
 101       */
 102       assert(LIS4); /* should never be zero? */
 103    }
 104
 105    LIS4 |= i915->rasterizer->LIS4;
 106
 107    if (LIS2 != i915->current.immediate[I915_IMMEDIATE_S2] ||
 108        LIS4 != i915->current.immediate[I915_IMMEDIATE_S4]) {
 109
 110       i915->current.immediate[I915_IMMEDIATE_S2] = LIS2;
 111       i915->current.immediate[I915_IMMEDIATE_S4] = LIS4;
 112       i915->hardware_dirty |= I915_HW_IMMEDIATE;
 113    }
 114 }
 115
 116
 117 const struct i915_tracked_state i915_upload_S2S4 = {
 118    I915_NEW_RASTERIZER | I915_NEW_VERTEX_FORMAT,
 119    upload_S2S4
 120 };
 121
 122
 123
 124 /***********************************************************************
 125  *
 126  */
 127 static void upload_S5( struct i915_context *i915 )
 128 {
 129    unsigned LIS5 = 0;
 130
 131    LIS5 |= i915->depth_stencil->stencil_LIS5;
 132
 133    LIS5 |= i915->blend->LIS5;
 134
 135 #if 0
 136    /* I915_NEW_RASTERIZER */
 137    if (i915->state.Polygon->OffsetFill) {
 138       LIS5 |= S5_GLOBAL_DEPTH_OFFSET_ENABLE;
 139    }
 140 #endif
 141
 142
 143    if (LIS5 != i915->current.immediate[I915_IMMEDIATE_S5]) {
 144       i915->current.immediate[I915_IMMEDIATE_S5] = LIS5;
 145       i915->hardware_dirty |= I915_HW_IMMEDIATE;
 146    }
 147 }
 148
 149 const struct i915_tracked_state i915_upload_S5 = {
 150    (I915_NEW_DEPTH_STENCIL | I915_NEW_BLEND | I915_NEW_RASTERIZER),
 151    upload_S5
 152 };
 153
 154
 155 /***********************************************************************
 156  */
 157 static void upload_S6( struct i915_context *i915 )
 158 {
 159    unsigned LIS6 = (2 << S6_TRISTRIP_PV_SHIFT);
 160
 161    /* I915_NEW_FRAMEBUFFER
 162     */
 163    if (i915->framebuffer.cbufs[0])
 164       LIS6 |= S6_COLOR_WRITE_ENABLE;
 165
 166    /* I915_NEW_BLEND
 167     */
 168    LIS6 |= i915->blend->LIS6;
 169
 170    /* I915_NEW_DEPTH
 171     */
 172    LIS6 |= i915->depth_stencil->depth_LIS6;
 173
 174    if (LIS6 != i915->current.immediate[I915_IMMEDIATE_S6]) {
 175       i915->current.immediate[I915_IMMEDIATE_S6] = LIS6;
 176       i915->hardware_dirty |= I915_HW_IMMEDIATE;
 177    }
 178 }
 179
 180 const struct i915_tracked_state i915_upload_S6 = {
 181    I915_NEW_BLEND | I915_NEW_DEPTH_STENCIL | I915_NEW_FRAMEBUFFER,
 182    upload_S6
 183 };
 184
 185
 186 /***********************************************************************
 187  */
 188 static void upload_S7( struct i915_context *i915 )
 189 {
 190    unsigned LIS7;
 191
 192    /* I915_NEW_RASTERIZER
 193     */
 194    LIS7 = i915->rasterizer->LIS7;
 195
 196    if (LIS7 != i915->current.immediate[I915_IMMEDIATE_S7]) {
 197       i915->current.immediate[I915_IMMEDIATE_S7] = LIS7;
 198       i915->hardware_dirty |= I915_HW_IMMEDIATE;
 199    }
 200 }
 201
 202 const struct i915_tracked_state i915_upload_S7 = {
 203    I915_NEW_RASTERIZER,
 204    upload_S7
 205 };
 206
 207
 208 static const struct i915_tracked_state *atoms[] = {
 209    &i915_upload_S0S1,
 210    &i915_upload_S2S4,
 211    &i915_upload_S5,
 212    &i915_upload_S6,
 213    &i915_upload_S7
 214 };
 215
 216 /*
 217  */
 218 void i915_update_immediate( struct i915_context *i915 )
 219 {
 220    int i;
 221
 222    for (i = 0; i < Elements(atoms); i++)
 223       if (i915->dirty & atoms[i]->dirty)
 224          atoms[i]->update( i915 );
 225 }