OpenHarmony/third_party_mesa3d
2
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

A new module to provide RasterSetup and advanced triangle/line/point

Browse Source 
functionality layered on top of the software rasterizer.

An example entrypoint:
	void _swsetup_Triangle( GLcontext, GLuint, GLuint, GLuint, GLuint )

will coerce the software rasterizer to draw flat, twoside-lit,
unfilled and offset triangles (including decomposition to points or lines).
This commit is contained in:
Keith Whitwell
2000-11-05 18:20:18 +00:00
parent c6f348cbc9
commit 7c20642b10
10 changed files with 1260 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

161
src/mesa/swrast_setup/ss_triangle.c Normal file
View File

@@ -0,0 +1,161 @@
/*
* Mesa 3-D graphics library
* Version: 3.5
*
* Copyright (C) 1999 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
* 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.
*
* Authors:
* Keith Whitwell <keithw@valinux.com>
*/
#include "glheader.h"
#include "macros.h"
#include "types.h"
#include "ss_triangle.h"
#include "ss_context.h"
#define SS_FLAT_BIT 0x1
#define SS_OFFSET_BIT 0x2
#define SS_TWOSIDE_BIT 0x4
#define SS_UNFILLED_BIT 0x10
#define SS_MAX_TRIFUNC 0x20
static triangle_func tri_tab[SS_MAX_TRIFUNC];
static line_func line_tab[SS_MAX_TRIFUNC];
static points_func points_tab[SS_MAX_TRIFUNC];
static quad_func quad_tab[SS_MAX_TRIFUNC];
#define SS_COLOR(a,b) COPY_4UBV(a,b)
#define SS_SPEC(a,b) COPY_4UBV(a,b)
#define SS_IND(a,b) (a = b)
#define IND (0)
#define TAG(x) x
#include "ss_tritmp.h"
#define IND (SS_FLAT_BIT)
#define TAG(x) x##_flat
#include "ss_tritmp.h"
#define IND (SS_OFFSET_BIT)
#define TAG(x) x##_offset
#include "ss_tritmp.h"
#define IND (SS_FLAT_BIT|SS_OFFSET_BIT)
#define TAG(x) x##_flat_offset
#include "ss_tritmp.h"
#define IND (SS_TWOSIDE_BIT)
#define TAG(x) x##_twoside
#include "ss_tritmp.h"
#define IND (SS_FLAT_BIT|SS_TWOSIDE_BIT)
#define TAG(x) x##_flat_twoside
#include "ss_tritmp.h"
#define IND (SS_OFFSET_BIT|SS_TWOSIDE_BIT)
#define TAG(x) x##_offset_twoside
#include "ss_tritmp.h"
#define IND (SS_FLAT_BIT|SS_OFFSET_BIT|SS_TWOSIDE_BIT)
#define TAG(x) x##_flat_offset_twoside
#include "ss_tritmp.h"
#define IND (SS_UNFILLED_BIT)
#define TAG(x) x##_unfilled
#include "ss_tritmp.h"
#define IND (SS_FLAT_BIT|SS_UNFILLED_BIT)
#define TAG(x) x##_flat_unfilled
#include "ss_tritmp.h"
#define IND (SS_OFFSET_BIT|SS_UNFILLED_BIT)
#define TAG(x) x##_offset_unfilled
#include "ss_tritmp.h"
#define IND (SS_FLAT_BIT|SS_OFFSET_BIT|SS_UNFILLED_BIT)
#define TAG(x) x##_flat_offset_unfilled
#include "ss_tritmp.h"
#define IND (SS_TWOSIDE_BIT|SS_UNFILLED_BIT)
#define TAG(x) x##_twoside_unfilled
#include "ss_tritmp.h"
#define IND (SS_FLAT_BIT|SS_TWOSIDE_BIT|SS_UNFILLED_BIT)
#define TAG(x) x##_flat_twoside_unfilled
#include "ss_tritmp.h"
#define IND (SS_OFFSET_BIT|SS_TWOSIDE_BIT|SS_UNFILLED_BIT)
#define TAG(x) x##_offset_twoside_unfilled
#include "ss_tritmp.h"
#define IND (SS_FLAT_BIT|SS_OFFSET_BIT|SS_TWOSIDE_BIT|SS_UNFILLED_BIT)
#define TAG(x) x##_flat_offset_twoside_unfilled
#include "ss_tritmp.h"
void _swsetup_trifuncs_init( GLcontext *ctx )
{
(void) ctx;
init();
init_flat();
init_offset();
init_flat_offset();
init_twoside();
init_flat_twoside();
init_offset_twoside();
init_flat_offset_twoside();
init_unfilled();
init_flat_unfilled();
init_offset_unfilled();
init_flat_offset_unfilled();
init_twoside_unfilled();
init_flat_twoside_unfilled();
init_offset_twoside_unfilled();
init_flat_offset_twoside_unfilled();
}
void _swsetup_choose_trifuncs( GLcontext *ctx )
{
SScontext *swsetup = SWSETUP_CONTEXT(ctx);
GLuint ind = 0;
if (ctx->Light.ShadeModel == GL_FLAT)
ind |= SS_FLAT_BIT;
if (ctx->Polygon._OffsetAny)
ind |= SS_OFFSET_BIT;
if (ctx->Light.Enabled && ctx->Light.Model.TwoSide)
ind |= SS_TWOSIDE_BIT;
if (ctx->Polygon._Unfilled)
ind |= SS_UNFILLED_BIT;
swsetup->Triangle = tri_tab[ind];
swsetup->Line = line_tab[ind];
swsetup->Points = points_tab[ind];
swsetup->Quad = quad_tab[ind];
}