src/mesa/drivers/dri/i965/brw_draw_current.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 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 #include <stdlib.h>
  29
  30 #include "glheader.h"
  31 #include "context.h"
  32 #include "state.h"
  33 #include "api_validate.h"
  34 #include "enums.h"
  35
  36 #include "brw_context.h"
  37 #include "brw_draw.h"
  38
  39 #include "bufmgr.h"
  40 #include "intel_buffer_objects.h"
  41
  42
  43 void brw_init_current_values(GLcontext *ctx,
  44                              struct gl_client_array *arrays)
  45 {
  46    GLuint i;
  47
  48    memset(arrays, 0, sizeof(*arrays) * BRW_ATTRIB_MAX);
  49
  50    /* Set up a constant (StrideB == 0) array for each current
  51     * attribute:
  52     */
  53    for (i = 0; i < BRW_ATTRIB_MAX; i++) {
  54       struct gl_client_array *cl = &arrays[i];
  55
  56       switch (i) {
  57       case BRW_ATTRIB_MAT_FRONT_SHININESS:
  58       case BRW_ATTRIB_MAT_BACK_SHININESS:
  59       case BRW_ATTRIB_INDEX:
  60       case BRW_ATTRIB_EDGEFLAG:
  61          cl->Size = 1;
  62          break;
  63       case BRW_ATTRIB_MAT_FRONT_INDEXES:
  64       case BRW_ATTRIB_MAT_BACK_INDEXES:
  65          cl->Size = 3;
  66          break;
  67       default:
  68          /* This is fixed for the material attributes, for others will
  69           * be determined at runtime:
  70           */
  71          if (i >= BRW_ATTRIB_MAT_FRONT_AMBIENT)
  72             cl->Size = 4;
  73          else
  74             cl->Size = 1;
  75          break;
  76       }
  77
  78       switch (i) {
  79       case BRW_ATTRIB_EDGEFLAG:
  80          cl->Type = GL_UNSIGNED_BYTE;
  81          cl->Ptr = (const void *)&ctx->Current.EdgeFlag;
  82          break;
  83       case BRW_ATTRIB_INDEX:
  84          cl->Type = GL_FLOAT;
  85          cl->Ptr = (const void *)&ctx->Current.Index;
  86          break;
  87       default:
  88          cl->Type = GL_FLOAT;
  89          if (i < BRW_ATTRIB_FIRST_MATERIAL)
  90             cl->Ptr = (const void *)ctx->Current.Attrib[i];
  91          else
  92             cl->Ptr = (const void *)ctx->Light.Material.Attrib[i - BRW_ATTRIB_FIRST_MATERIAL];
  93          break;
  94       }
  95
  96       cl->Stride = 0;
  97       cl->StrideB = 0;
  98       cl->Enabled = 1;
  99       cl->Flags = 0;
 100       cl->BufferObj = ctx->Array.NullBufferObj;
 101    }
 102 }
 103