xref: /xsrc/external/mit/MesaLib/dist/src/mesa/main/feedback.h

/*
 * Mesa 3-D graphics library
 * Version:  7.5
 *
 * 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 FEEDBACK_H
#define FEEDBACK_H


#include "main/mtypes.h"


#if FEATURE_feedback

#define _MESA_INIT_FEEDBACK_FUNCTIONS(driver, impl) \
   do {                                             \
      (driver)->RenderMode = impl ## RenderMode;    \
   } while (0)

extern void
_mesa_feedback_vertex( GLcontext *ctx,
                       const GLfloat win[4],
                       const GLfloat color[4],
                       GLfloat index,
                       const GLfloat texcoord[4] );


static INLINE void
_mesa_feedback_token( GLcontext *ctx, GLfloat token )
{
   if (ctx->Feedback.Count < ctx->Feedback.BufferSize) {
      ctx->Feedback.Buffer[ctx->Feedback.Count] = token;
   }
   ctx->Feedback.Count++;
}


extern void
_mesa_update_hitflag( GLcontext *ctx, GLfloat z );


extern void
_mesa_init_feedback_dispatch(struct _glapi_table *disp);

#else /* FEATURE_feedback */

#define _MESA_INIT_FEEDBACK_FUNCTIONS(driver, impl) do { } while (0)

static INLINE void
_mesa_feedback_vertex( GLcontext *ctx,
                       const GLfloat win[4],
                       const GLfloat color[4],
                       GLfloat index,
                       const GLfloat texcoord[4] )
{
   /* render mode is always GL_RENDER */
   ASSERT_NO_FEATURE();
}


static INLINE void
_mesa_feedback_token( GLcontext *ctx, GLfloat token )
{
   /* render mode is always GL_RENDER */
   ASSERT_NO_FEATURE();
}

static INLINE void
_mesa_update_hitflag( GLcontext *ctx, GLfloat z )
{
   /* render mode is always GL_RENDER */
   ASSERT_NO_FEATURE();
}

static INLINE void
_mesa_init_feedback_dispatch(struct _glapi_table *disp)
{
}

#endif /* FEATURE_feedback */

extern void
_mesa_init_feedback( GLcontext *ctx );

#endif /* FEEDBACK_H */