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/*
* GLX Hardware Device Driver for Matrox Millenium G200
* Copyright (C) 1999 Wittawat Yamwong
*
* 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
* WITTAWAT YAMWONG, OR ANY OTHER CONTRIBUTORS 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.
*
*
* Wittawat Yamwong <Wittawat.Yamwong@stud.uni-hannover.de>
*/
#include <stdio.h>
#include <math.h>
#include "types.h"
#include "vb.h"
#include "pipeline.h"
#include "mm.h"
#include "mgalib.h"
#include "mgatris.h"
#include "mgavb.h"
#include "mgalog.h"
static void mga_null_quad( GLcontext *ctx, GLuint v0,
GLuint v1, GLuint v2, GLuint v3, GLuint pv ) {
}
static void mga_null_triangle( GLcontext *ctx, GLuint v0,
GLuint v1, GLuint v2, GLuint pv ) {
}
static void mga_null_line( GLcontext *ctx, GLuint v1, GLuint v2, GLuint pv ) {
}
static void mga_null_points( GLcontext *ctx, GLuint first, GLuint last ) {
}
#define MGA_COLOR(to, from) { \
(to)[0] = (from)[2]; \
(to)[1] = (from)[1]; \
(to)[2] = (from)[0]; \
(to)[3] = (from)[3]; \
}
static triangle_func tri_tab[0x20];
static quad_func quad_tab[0x20];
static line_func line_tab[0x20];
static points_func points_tab[0x20];
static void mgaPrintRenderState( const char *msg, GLuint state )
{
mgaMsg(1, "%s: (%x) %s%s%s%s%s%s\n",
msg, state,
(state & MGA_FLAT_BIT) ? "flat, " : "",
(state & MGA_OFFSET_BIT) ? "offset, " : "",
(state & MGA_TWOSIDE_BIT) ? "twoside, " : "",
(state & MGA_ANTIALIAS_BIT) ? "antialias, " : "",
(state & MGA_NODRAW_BIT) ? "no-draw, " : "",
(state & MGA_FALLBACK_BIT) ? "fallback" : "");
}
#define IND (0)
#define TAG(x) x
#include "mgatritmp.h"
#define IND (MGA_FLAT_BIT)
#define TAG(x) x##_flat
#include "mgatritmp.h"
#define IND (MGA_OFFSET_BIT)
#define TAG(x) x##_offset
#include "mgatritmp.h"
#define IND (MGA_OFFSET_BIT|MGA_FLAT_BIT)
#define TAG(x) x##_offset_flat
#include "mgatritmp.h"
#define IND (MGA_TWOSIDE_BIT)
#define TAG(x) x##_twoside
#include "mgatritmp.h"
#define IND (MGA_TWOSIDE_BIT|MGA_FLAT_BIT)
#define TAG(x) x##_twoside_flat
#include "mgatritmp.h"
#define IND (MGA_TWOSIDE_BIT|MGA_OFFSET_BIT)
#define TAG(x) x##_twoside_offset
#include "mgatritmp.h"
#define IND (MGA_TWOSIDE_BIT|MGA_OFFSET_BIT|MGA_FLAT_BIT)
#define TAG(x) x##_twoside_offset_flat
#include "mgatritmp.h"
void mgaDDTrifuncInit()
{
int i;
init();
init_flat();
init_offset();
init_offset_flat();
init_twoside();
init_twoside_flat();
init_twoside_offset();
init_twoside_offset_flat();
for (i = 0 ; i < 0x20 ; i++)
if ((i & (MGA_NODRAW_BIT|MGA_FALLBACK_BIT)) == MGA_NODRAW_BIT)
{
quad_tab[i] = mga_null_quad;
tri_tab[i] = mga_null_triangle;
line_tab[i] = mga_null_line;
points_tab[i] = mga_null_points;
}
}
void mgaDDChooseRenderState( GLcontext *ctx )
{
mgaContextPtr mmesa = MGA_CONTEXT( ctx );
GLuint flags = ctx->TriangleCaps;
if (mmesa->Fallback)
return;
mmesa->IndirectTriangles &= ~DD_SW_RASTERIZE;
if (flags) {
GLuint ind = 0;
GLuint shared = 0;
if (flags & DD_Z_NEVER) shared |= MGA_NODRAW_BIT;
if (flags & DD_FLATSHADE) shared |= MGA_FLAT_BIT;
if (flags & (DD_MULTIDRAW|
DD_SELECT|
DD_FEEDBACK)) shared |= MGA_FALLBACK_BIT;
if (flags & DD_STENCIL) shared |= MGA_FALLBACK_BIT;
ind = shared;
#if 0
if (flags & DD_POINT_SMOOTH) ind |= MGA_ANTIALIAS_BIT;
#else
if (flags & DD_POINT_SMOOTH) ind |= MGA_FALLBACK_BIT;
#endif
mmesa->renderindex = ind;
mmesa->PointsFunc = points_tab[ind];
if (ind & MGA_FALLBACK_BIT)
mmesa->IndirectTriangles |= DD_POINT_SW_RASTERIZE;
ind = shared;
#if 0
if (flags & DD_LINE_SMOOTH) ind |= MGA_ANTIALIAS_BIT;
#else
if (flags & DD_LINE_SMOOTH) ind |= MGA_FALLBACK_BIT;
#endif
if (flags & DD_LINE_STIPPLE) ind |= MGA_FALLBACK_BIT;
mmesa->renderindex |= ind;
mmesa->LineFunc = line_tab[ind];
if (ind & MGA_FALLBACK_BIT)
mmesa->IndirectTriangles |= DD_LINE_SW_RASTERIZE;
ind = shared;
if (flags & DD_TRI_SMOOTH) ind |= MGA_ANTIALIAS_BIT;
if (flags & DD_TRI_OFFSET) ind |= MGA_OFFSET_BIT;
if (flags & DD_TRI_LIGHT_TWOSIDE) ind |= MGA_TWOSIDE_BIT;
if (flags & DD_TRI_UNFILLED) ind |= MGA_FALLBACK_BIT;
if ((flags & DD_TRI_STIPPLE) &&
(ctx->IndirectTriangles & DD_TRI_STIPPLE)) ind |= MGA_FALLBACK_BIT;
mmesa->renderindex |= ind;
mmesa->TriangleFunc = tri_tab[ind];
mmesa->QuadFunc = quad_tab[ind];
if (ind & MGA_FALLBACK_BIT)
mmesa->IndirectTriangles |= (DD_TRI_SW_RASTERIZE |
DD_QUAD_SW_RASTERIZE);
}
else if (mmesa->renderindex)
{
mmesa->renderindex = 0;
mmesa->PointsFunc = points_tab[0];
mmesa->LineFunc = line_tab[0];
mmesa->TriangleFunc = tri_tab[0];
mmesa->QuadFunc = quad_tab[0];
}
if (0) {
gl_print_tri_caps("tricaps", ctx->TriangleCaps);
mgaPrintRenderState("mga: Render state", mmesa->renderindex);
}
}
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