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

/**
 * \file dlist.h
 * Display lists management.
 */

/*
 * Mesa 3-D graphics library
 *
 * Copyright (C) 1999-2006  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
 * THE AUTHORS OR COPYRIGHT HOLDERS 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 DLIST_H
#define DLIST_H

#include <stdio.h>

struct gl_context;

/**
 * Describes the location and size of a glBitmap image in a texture atlas.
 */
struct gl_bitmap_glyph
{
   unsigned short x, y, w, h;  /**< position and size in the texture */
   float xorig, yorig;         /**< bitmap origin */
   float xmove, ymove;         /**< rasterpos move */
};


/**
 * Describes a set of glBitmap display lists which live in a texture atlas.
 * The idea is when we see a code sequence of glListBase(b), glCallLists(n)
 * we're probably drawing bitmap font glyphs.  We try to put all the bitmap
 * glyphs into one texture map then render the glCallLists as a textured
 * quadstrip.
 */
struct gl_bitmap_atlas
{
   GLint Id;
   bool complete;     /**< Is the atlas ready to use? */
   bool incomplete;   /**< Did we fail to construct this atlas? */

   unsigned numBitmaps;
   unsigned texWidth, texHeight;
   struct gl_texture_object *texObj;
   struct gl_texture_image *texImage;

   unsigned glyphHeight;

   struct gl_bitmap_glyph *glyphs;
};

void
_mesa_delete_bitmap_atlas(struct gl_context *ctx,
                          struct gl_bitmap_atlas *atlas);


GLboolean GLAPIENTRY
_mesa_IsList(GLuint list);

void GLAPIENTRY
_mesa_DeleteLists(GLuint list, GLsizei range);

GLuint GLAPIENTRY
_mesa_GenLists(GLsizei range);

void GLAPIENTRY
_mesa_NewList(GLuint name, GLenum mode);

void GLAPIENTRY
_mesa_EndList(void);

void GLAPIENTRY
_mesa_CallList(GLuint list);

void GLAPIENTRY
_mesa_CallLists(GLsizei n, GLenum type, const GLvoid *lists);

void GLAPIENTRY
_mesa_ListBase(GLuint base);

struct gl_display_list *
_mesa_lookup_list(struct gl_context *ctx, GLuint list, bool locked);

void
_mesa_compile_error(struct gl_context *ctx, GLenum error, const char *s);

void *
_mesa_dlist_alloc_vertex_list(struct gl_context *ctx,
                              bool copy_to_current);

void
_mesa_delete_list(struct gl_context *ctx, struct gl_display_list *dlist);

void
_mesa_initialize_save_table(const struct gl_context *);

void
_mesa_install_dlist_vtxfmt(struct _glapi_table *disp,
                           const GLvertexformat *vfmt);

void
_mesa_init_display_list(struct gl_context * ctx);

bool
_mesa_get_list(struct gl_context *ctx, GLuint list,
               struct gl_display_list **dlist,
               bool locked);

#endif /* DLIST_H */