reactos/dll/opengl/mesa/main/varray.h

/*
 * Mesa 3-D graphics library
 * Version:  7.6
 *
 * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
 * Copyright (C) 2009  VMware, Inc.  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.
 */


#ifndef VARRAY_H
#define VARRAY_H


#include "glheader.h"
#include "mfeatures.h"

struct gl_client_array;
struct gl_context;


/**
 * Compute the index of the last array element that can be safely accessed in
 * a vertex array.  We can really only do this when the array lives in a VBO.
 * The array->_MaxElement field will be updated.
 * Later in glDrawArrays/Elements/etc we can do some bounds checking.
 */
static inline void
_mesa_update_array_max_element(struct gl_client_array *array)
{
   assert(array->Enabled);

   if (array->BufferObj->Name) {
      GLsizeiptrARB offset = (GLsizeiptrARB) array->Ptr;
      GLsizeiptrARB bufSize = (GLsizeiptrARB) array->BufferObj->Size;

      if (offset < bufSize) {
	 array->_MaxElement = (bufSize - offset + array->StrideB
                               - array->_ElementSize) / array->StrideB;
      }
      else {
	 array->_MaxElement = 0;
      }
   }
   else {
      /* user-space array, no idea how big it is */
      array->_MaxElement = 2 * 1000 * 1000 * 1000; /* just a big number */
   }
}


#if _HAVE_FULL_GL

extern void GLAPIENTRY
_mesa_VertexPointer(GLint size, GLenum type, GLsizei stride,
                    const GLvoid *ptr);

extern void GLAPIENTRY
_mesa_UnlockArraysEXT( void );

extern void GLAPIENTRY
_mesa_LockArraysEXT(GLint first, GLsizei count);


extern void GLAPIENTRY
_mesa_NormalPointer(GLenum type, GLsizei stride, const GLvoid *ptr);


extern void GLAPIENTRY
_mesa_ColorPointer(GLint size, GLenum type, GLsizei stride, const GLvoid *ptr);


extern void GLAPIENTRY
_mesa_IndexPointer(GLenum type, GLsizei stride, const GLvoid *ptr);


extern void GLAPIENTRY
_mesa_TexCoordPointer(GLint size, GLenum type, GLsizei stride,
                      const GLvoid *ptr);


extern void GLAPIENTRY
_mesa_EdgeFlagPointer(GLsizei stride, const GLvoid *ptr);


extern void GLAPIENTRY
_mesa_VertexPointerEXT(GLint size, GLenum type, GLsizei stride,
                       GLsizei count, const GLvoid *ptr);


extern void GLAPIENTRY
_mesa_NormalPointerEXT(GLenum type, GLsizei stride, GLsizei count,
                       const GLvoid *ptr);


extern void GLAPIENTRY
_mesa_ColorPointerEXT(GLint size, GLenum type, GLsizei stride, GLsizei count,
                      const GLvoid *ptr);


extern void GLAPIENTRY
_mesa_IndexPointerEXT(GLenum type, GLsizei stride, GLsizei count,
                      const GLvoid *ptr);


extern void GLAPIENTRY
_mesa_TexCoordPointerEXT(GLint size, GLenum type, GLsizei stride,
                         GLsizei count, const GLvoid *ptr);


extern void GLAPIENTRY
_mesa_EdgeFlagPointerEXT(GLsizei stride, GLsizei count, const GLboolean *ptr);


extern void GLAPIENTRY
_mesa_FogCoordPointerEXT(GLenum type, GLsizei stride, const GLvoid *ptr);


extern void GLAPIENTRY
_mesa_InterleavedArrays(GLenum format, GLsizei stride, const GLvoid *pointer);

extern void GLAPIENTRY
_mesa_MultiModeDrawArraysIBM( const GLenum * mode, const GLint * first,
			      const GLsizei * count,
			      GLsizei primcount, GLint modestride );


extern void GLAPIENTRY
_mesa_MultiModeDrawElementsIBM( const GLenum * mode, const GLsizei * count,
				GLenum type, const GLvoid * const * indices,
				GLsizei primcount, GLint modestride );

extern void GLAPIENTRY
_mesa_LockArraysEXT(GLint first, GLsizei count);

extern void GLAPIENTRY
_mesa_UnlockArraysEXT( void );


extern void GLAPIENTRY
_mesa_DrawArrays(GLenum mode, GLint first, GLsizei count);

extern void GLAPIENTRY
_mesa_DrawElements(GLenum mode, GLsizei count, GLenum type,
                   const GLvoid *indices);


extern void
_mesa_copy_client_array(struct gl_context *ctx,
                        struct gl_client_array *dst,
                        struct gl_client_array *src);

extern void
_mesa_init_varray( struct gl_context * ctx, struct gl_array_attrib *array);

extern void 
_mesa_free_varray_data(struct gl_context *ctx, struct gl_array_attrib *array);

#else

/** No-op */
#define _mesa_init_varray( c )  ((void)0)
#define _mesa_free_varray_data( c )  ((void)0)

#endif

#endif