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/* $Id: t_import_array.c,v 1.1 2003-04-24 14:24:01 giacomo Exp $ */

/*

 * Mesa 3-D graphics library

 * Version:  4.1

 *

 * Copyright (C) 1999-2002  Brian Paul   All Rights Reserved.

 *

 * Permission is hereby granted, free of charge, to any person obtaining a

 * copy of this software and associated documentation files (the "Software"),

 * to deal in the Software without restriction, including without limitation

 * the rights to use, copy, modify, merge, publish, distribute, sublicense,

 * and/or sell copies of the Software, and to permit persons to whom the

 * Software is furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be included

 * in all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

 *

 * Authors:

 *    Keith Whitwell <keith@tungstengraphics.com>

 */

#include "glheader.h"

#include "context.h"

#include "macros.h"

#include "imports.h"

#include "mmath.h"

#include "state.h"

#include "mtypes.h"

#include "array_cache/acache.h"

#include "math/m_translate.h"

#include "t_import_array.h"

#include "t_context.h"

#include "t_imm_debug.h"

static void _tnl_import_vertex( GLcontext *ctx,

                                GLboolean writeable,

                                GLboolean stride )

{

   struct gl_client_array *tmp;

   GLboolean is_writeable = 0;

   struct vertex_arrays *inputs = &TNL_CONTEXT(ctx)->array_inputs;

   tmp = _ac_import_vertex(ctx,

                           GL_FLOAT,

                           stride ? 4*sizeof(GLfloat) : 0,

                           0,

                           writeable,

                           &is_writeable);

   inputs->Obj.data = (GLfloat (*)[4]) tmp->Ptr;

   inputs->Obj.start = (GLfloat *) tmp->Ptr;

   inputs->Obj.stride = tmp->StrideB;

   inputs->Obj.size = tmp->Size;

   inputs->Obj.flags &= ~(VEC_BAD_STRIDE|VEC_NOT_WRITEABLE);

   if (inputs->Obj.stride != 4*sizeof(GLfloat))

      inputs->Obj.flags |= VEC_BAD_STRIDE;

   if (!is_writeable)

      inputs->Obj.flags |= VEC_NOT_WRITEABLE;

}

static void _tnl_import_normal( GLcontext *ctx,

                                GLboolean writeable,

                                GLboolean stride )

{

   struct gl_client_array *tmp;

   GLboolean is_writeable = 0;

   struct vertex_arrays *inputs = &TNL_CONTEXT(ctx)->array_inputs;

   tmp = _ac_import_normal(ctx, GL_FLOAT,

                           stride ? 3*sizeof(GLfloat) : 0, writeable,

                           &is_writeable);

   inputs->Normal.data = (GLfloat (*)[4]) tmp->Ptr;

   inputs->Normal.start = (GLfloat *) tmp->Ptr;

   inputs->Normal.stride = tmp->StrideB;

   inputs->Normal.flags &= ~(VEC_BAD_STRIDE|VEC_NOT_WRITEABLE);

   if (inputs->Normal.stride != 3*sizeof(GLfloat))

      inputs->Normal.flags |= VEC_BAD_STRIDE;

   if (!is_writeable)

      inputs->Normal.flags |= VEC_NOT_WRITEABLE;

}

static void _tnl_import_color( GLcontext *ctx,

                               GLenum type,

                               GLboolean writeable,

                               GLboolean stride )

{

   struct gl_client_array *tmp;

   GLboolean is_writeable = 0;

   struct vertex_arrays *inputs = &TNL_CONTEXT(ctx)->array_inputs;

   tmp = _ac_import_color(ctx,

                          type,

                          stride ? 4*sizeof(GLfloat) : 0,

                          4,

                          writeable,

                          &is_writeable);

   inputs->Color = *tmp;

}

static void _tnl_import_secondarycolor( GLcontext *ctx,

                                        GLenum type,

                                        GLboolean writeable,

                                        GLboolean stride )

{

   struct gl_client_array *tmp;

   GLboolean is_writeable = 0;

   struct vertex_arrays *inputs = &TNL_CONTEXT(ctx)->array_inputs;

   tmp = _ac_import_secondarycolor(ctx,

                                   type,

                                   stride ? 4*sizeof(GLfloat) : 0,

                                   4,

                                   writeable,

                                   &is_writeable);

   inputs->SecondaryColor = *tmp;

}

static void _tnl_import_fogcoord( GLcontext *ctx,

                                  GLboolean writeable,

                                  GLboolean stride )

{

   struct vertex_arrays *inputs = &TNL_CONTEXT(ctx)->array_inputs;

    struct gl_client_array *tmp;

   GLboolean is_writeable = 0;

   tmp = _ac_import_fogcoord(ctx, GL_FLOAT,

                             stride ? sizeof(GLfloat) : 0, writeable,

                             &is_writeable);

   inputs->FogCoord.data = (GLfloat (*)[4]) tmp->Ptr;

   inputs->FogCoord.start = (GLfloat *) tmp->Ptr;

   inputs->FogCoord.stride = tmp->StrideB;

   inputs->FogCoord.flags &= ~(VEC_BAD_STRIDE|VEC_NOT_WRITEABLE);

   if (inputs->FogCoord.stride != sizeof(GLfloat))

      inputs->FogCoord.flags |= VEC_BAD_STRIDE;

   if (!is_writeable)

      inputs->FogCoord.flags |= VEC_NOT_WRITEABLE;

}

static void _tnl_import_index( GLcontext *ctx,

                               GLboolean writeable,

                               GLboolean stride )

{

   struct vertex_arrays *inputs = &TNL_CONTEXT(ctx)->array_inputs;

   struct gl_client_array *tmp;

   GLboolean is_writeable = 0;

   tmp = _ac_import_index(ctx, GL_UNSIGNED_INT,

                          stride ? sizeof(GLuint) : 0, writeable,

                          &is_writeable);

   inputs->Index.data = (GLuint *) tmp->Ptr;

   inputs->Index.start = (GLuint *) tmp->Ptr;

   inputs->Index.stride = tmp->StrideB;

   inputs->Index.flags &= ~(VEC_BAD_STRIDE|VEC_NOT_WRITEABLE);

   if (inputs->Index.stride != sizeof(GLuint))

      inputs->Index.flags |= VEC_BAD_STRIDE;

   if (!is_writeable)

      inputs->Index.flags |= VEC_NOT_WRITEABLE;

}

static void _tnl_import_texcoord( GLcontext *ctx,

                                  GLuint unit,

                                  GLboolean writeable,

                                  GLboolean stride )

{

   struct vertex_arrays *inputs = &TNL_CONTEXT(ctx)->array_inputs;

   struct gl_client_array *tmp;

   GLboolean is_writeable = 0;

   tmp = _ac_import_texcoord(ctx, unit, GL_FLOAT,

                             stride ? 4 * sizeof(GLfloat) : 0,

                             0,

                             writeable,

                             &is_writeable);

   inputs->TexCoord[unit].data = (GLfloat (*)[4]) tmp->Ptr;

   inputs->TexCoord[unit].start = (GLfloat *) tmp->Ptr;

   inputs->TexCoord[unit].stride = tmp->StrideB;

   inputs->TexCoord[unit].size = tmp->Size;

   inputs->TexCoord[unit].flags &= ~(VEC_BAD_STRIDE|VEC_NOT_WRITEABLE);

   if (inputs->TexCoord[unit].stride != 4*sizeof(GLfloat))

      inputs->TexCoord[unit].flags |= VEC_BAD_STRIDE;

   if (!is_writeable)

      inputs->TexCoord[unit].flags |= VEC_NOT_WRITEABLE;

}

static void _tnl_import_edgeflag( GLcontext *ctx,

                                  GLboolean writeable,

                                  GLboolean stride )

{

   struct vertex_arrays *inputs = &TNL_CONTEXT(ctx)->array_inputs;

   struct gl_client_array *tmp;

   GLboolean is_writeable = 0;

   tmp = _ac_import_edgeflag(ctx, GL_UNSIGNED_BYTE,

                             stride ? sizeof(GLubyte) : 0,

                             0,

                             &is_writeable);

   inputs->EdgeFlag.data = (GLubyte *) tmp->Ptr;

   inputs->EdgeFlag.start = (GLubyte *) tmp->Ptr;

   inputs->EdgeFlag.stride = tmp->StrideB;

   inputs->EdgeFlag.flags &= ~(VEC_BAD_STRIDE|VEC_NOT_WRITEABLE);

   if (inputs->EdgeFlag.stride != sizeof(GLubyte))

      inputs->EdgeFlag.flags |= VEC_BAD_STRIDE;

   if (!is_writeable)

      inputs->EdgeFlag.flags |= VEC_NOT_WRITEABLE;

}

static void _tnl_import_attrib( GLcontext *ctx,

                                GLuint index,

                                GLboolean writeable,

                                GLboolean stride )

{

   struct vertex_arrays *inputs = &TNL_CONTEXT(ctx)->array_inputs;

   struct gl_client_array *tmp;

   GLboolean is_writeable = 0;

   tmp = _ac_import_attrib(ctx, index, GL_FLOAT,

                           stride ? 4 * sizeof(GLfloat) : 0,

                           4,  /* want GLfloat[4] */

                           writeable,

                           &is_writeable);

   inputs->Attribs[index].data = (GLfloat (*)[4]) tmp->Ptr;

   inputs->Attribs[index].start = (GLfloat *) tmp->Ptr;

   inputs->Attribs[index].stride = tmp->StrideB;

   inputs->Attribs[index].size = tmp->Size;

   inputs->Attribs[index].flags &= ~(VEC_BAD_STRIDE|VEC_NOT_WRITEABLE);

   if (inputs->Attribs[index].stride != 4 * sizeof(GLfloat))

      inputs->Attribs[index].flags |= VEC_BAD_STRIDE;

   if (!is_writeable)

      inputs->Attribs[index].flags |= VEC_NOT_WRITEABLE;

}

/**

 * Callback for VB stages that need to improve the quality of arrays

 * bound to the VB.  This is only necessary for client arrays which

 * have not been transformed at any point in the pipeline.

 * \param required - bitmask of VERT_*_BIT flags

 * \param flags - bitmask of VEC_* flags (ex: VEC_NOT_WRITABLE)

 */

static void _tnl_upgrade_client_data( GLcontext *ctx,

                                      GLuint required,

                                      GLuint flags )

{

   GLuint i;

   struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb;

   GLboolean writeable = (flags & VEC_NOT_WRITEABLE) != 0;

   GLboolean stride = (flags & VEC_BAD_STRIDE) != 0;

   struct vertex_arrays *inputs = &TNL_CONTEXT(ctx)->array_inputs;

   GLuint ca_flags = 0;

   (void) inputs;

   if (writeable || stride) ca_flags |= CA_CLIENT_DATA;

   if ((required & VERT_BIT_CLIP) && VB->ClipPtr == VB->ObjPtr)

      required |= VERT_BIT_POS;

/*     _tnl_print_vert_flags("_tnl_upgrade_client_data", required); */

   if ((required & VERT_BIT_POS) && (VB->ObjPtr->flags & flags)) {

      ASSERT(VB->ObjPtr == &inputs->Obj);

      _tnl_import_vertex( ctx, writeable, stride );

      VB->importable_data &= ~(VERT_BIT_POS|VERT_BIT_CLIP);

   }

   if ((required & VERT_BIT_NORMAL) && (VB->NormalPtr->flags & flags)) {

      ASSERT(VB->NormalPtr == &inputs->Normal);

      _tnl_import_normal( ctx, writeable, stride );

      VB->importable_data &= ~VERT_BIT_NORMAL;

   }

   if ((required & VERT_BIT_COLOR0) && (VB->ColorPtr[0]->Flags & ca_flags)) {

      ASSERT(VB->ColorPtr[0] == &inputs->Color);

      _tnl_import_color( ctx, GL_FLOAT, writeable, stride );

      VB->importable_data &= ~VERT_BIT_COLOR0;

   }

   if ((required & VERT_BIT_COLOR1) &&

       (VB->SecondaryColorPtr[0]->Flags & ca_flags)) {

      ASSERT(VB->SecondaryColorPtr[0] == &inputs->SecondaryColor);

      _tnl_import_secondarycolor( ctx, GL_FLOAT, writeable, stride );

      VB->importable_data &= ~VERT_BIT_COLOR1;

   }

   if ((required & VERT_BIT_FOG)

       && (VB->FogCoordPtr->flags & flags)) {

      ASSERT(VB->FogCoordPtr == &inputs->FogCoord);

      _tnl_import_fogcoord( ctx, writeable, stride );

      VB->importable_data &= ~VERT_BIT_FOG;

   }

   if ((required & VERT_BIT_INDEX) && (VB->IndexPtr[0]->flags & flags)) {

      ASSERT(VB->IndexPtr[0] == &inputs->Index);

      _tnl_import_index( ctx, writeable, stride );

      VB->importable_data &= ~VERT_BIT_INDEX;

   }

   if (required & VERT_BITS_TEX_ANY)

      for (i = 0 ; i < ctx->Const.MaxTextureUnits ; i++)

         if ((required & VERT_BIT_TEX(i)) && (VB->TexCoordPtr[i]->flags & flags)) {

            ASSERT(VB->TexCoordPtr[i] == &inputs->TexCoord[i]);

            _tnl_import_texcoord( ctx, i, writeable, stride );

            VB->importable_data &= ~VERT_BIT_TEX(i);

         }

   /* XXX not sure what to do here for vertex program arrays */

}

void _tnl_vb_bind_arrays( GLcontext *ctx, GLint start, GLsizei count )

{

   TNLcontext *tnl = TNL_CONTEXT(ctx);

   struct vertex_buffer *VB = &tnl->vb;

   GLuint inputs = tnl->pipeline.inputs;

   struct vertex_arrays *tmp = &tnl->array_inputs;

/*        _mesa_debug(ctx, "%s %d..%d // %d..%d\n", __FUNCTION__, */

/*            start, count, ctx->Array.LockFirst, ctx->Array.LockCount);  */

/*        _tnl_print_vert_flags("    inputs", inputs);  */

/*        _tnl_print_vert_flags("    _Enabled", ctx->Array._Enabled); */

/*        _tnl_print_vert_flags("    importable", inputs & VERT_BITS_FIXUP); */

   VB->Count = count - start;

   VB->FirstClipped = VB->Count;

   VB->Elts = NULL;

   VB->MaterialMask = NULL;

   VB->Material = NULL;

   VB->Flag = NULL;

   VB->Primitive = tnl->tmp_primitive;

   VB->PrimitiveLength = tnl->tmp_primitive_length;

   VB->import_data = _tnl_upgrade_client_data;

   VB->importable_data = inputs & VERT_BITS_FIXUP;

   if (ctx->Array.LockCount) {

      ASSERT(start == (GLint) ctx->Array.LockFirst);

      ASSERT(count == (GLint) ctx->Array.LockCount);

   }

   _ac_import_range( ctx, start, count );

   if (inputs & VERT_BIT_POS) {

      _tnl_import_vertex( ctx, 0, 0 );

      tmp->Obj.count = VB->Count;

      VB->ObjPtr = &tmp->Obj;

   }

   if (inputs & VERT_BIT_NORMAL) {

      _tnl_import_normal( ctx, 0, 0 );

      tmp->Normal.count = VB->Count;

      VB->NormalPtr = &tmp->Normal;

   }

   if (inputs & VERT_BIT_COLOR0) {

      _tnl_import_color( ctx, 0, 0, 0 );

      VB->ColorPtr[0] = &tmp->Color;

      VB->ColorPtr[1] = 0;

   }

   if (inputs & VERT_BITS_TEX_ANY) {

      GLuint unit;

      for (unit = 0; unit < ctx->Const.MaxTextureUnits; unit++) {

         if (inputs & VERT_BIT_TEX(unit)) {

            _tnl_import_texcoord( ctx, unit, GL_FALSE, GL_FALSE );

            tmp->TexCoord[unit].count = VB->Count;

            VB->TexCoordPtr[unit] = &tmp->TexCoord[unit];

         }

      }

   }

   if (inputs & (VERT_BIT_INDEX | VERT_BIT_FOG |

                 VERT_BIT_EDGEFLAG | VERT_BIT_COLOR1)) {

      if (inputs & VERT_BIT_INDEX) {

         _tnl_import_index( ctx, 0, 0 );

         tmp->Index.count = VB->Count;

         VB->IndexPtr[0] = &tmp->Index;

         VB->IndexPtr[1] = 0;

      }

      if (inputs & VERT_BIT_FOG) {

         _tnl_import_fogcoord( ctx, 0, 0 );

         tmp->FogCoord.count = VB->Count;

         VB->FogCoordPtr = &tmp->FogCoord;

      }

      if (inputs & VERT_BIT_EDGEFLAG) {

         _tnl_import_edgeflag( ctx, GL_TRUE, sizeof(GLboolean) );

         VB->EdgeFlag = (GLboolean *) tmp->EdgeFlag.data;

      }

      if (inputs & VERT_BIT_COLOR1) {

         _tnl_import_secondarycolor( ctx, 0, 0, 0 );

         VB->SecondaryColorPtr[0] = &tmp->SecondaryColor;

         VB->SecondaryColorPtr[1] = 0;

      }

   }

   /* XXX not 100% sure this is finished.  Keith should probably inspect. */

   if (ctx->VertexProgram.Enabled) {

      GLuint index;

      for (index = 0; index < VERT_ATTRIB_MAX; index++) {

         /* XXX check program->InputsRead to reduce work here */

         _tnl_import_attrib( ctx, index, GL_FALSE, GL_TRUE );

         VB->AttribPtr[index] = &tmp->Attribs[index];

      }

   }

}