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/* GGI-Driver for MESA
*
* Copyright (C) 1997 Uwe Maurer
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
* ---------------------------------------------------------------------
* This code was derived from the following source of information:
*
* svgamesa.c and ddsample.c by Brian Paul
*
*/
#ifndef _GGIMESA_H
#define _GGIMESA_H
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include "config.h"
#include "context.h"
#include "matrix.h"
#include "types.h"
#include "vb.h"
#include "macros.h"
#include "depth.h"
#undef ASSERT /* ASSERT is redefined */
#include <ggi/internal/internal.h>
#include <ggi/ggi_ext.h>
#include <ggi/ggi.h>
#include "GL/ggimesa.h"
struct ggi_mesa_info;
struct ggi_mesa_context
{
GLcontext *gl_ctx;
GLvisual *gl_vis;
GLframebuffer *gl_buffer;
ggi_visual_t ggi_vis;
ggi_coord origin;
int flip_y;
int width, height, stride; /* Stride is in pixels */
ggi_pixel color; /* Current color or index*/
ggi_pixel clearcolor;
void *lfb[2]; /* Linear frame buffers */
int active_buffer;
int bufsize;
int viewport_init;
};
struct ggi_mesa_info
{
GLboolean rgb_flag;
GLboolean db_flag;
GLboolean alpha_flag;
GLint index_bits;
GLint red_bits, green_bits, blue_bits, alpha_bits;
GLint depth_bits, stencil_bits, accum_bits;
};
extern GGIMesaContext GGIMesa; /* The current context */
#define SHIFT (GGI_COLOR_PRECISION - 8)
#define GGICTX ((GGIMesaContext)ctx->DriverCtx)
#define VIS (GGICTX->ggi_vis)
#define FLIP(y) (GGICTX->flip_y-(y))
#define LFB(type,x,y) ((type *)GGICTX->lfb[0] + (x) + (y) * GGICTX->stride)
#define CTX_OPMESA(ctx) \
((struct mesa_ext *)LIBGGI_EXT(((GGIMesaContext)ctx->DriverCtx)->ggi_vis, \
ggiMesaID))
#endif
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