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/* $Id: s_points.c,v 1.19 2002/06/15 03:03:11 brianp Exp $ */
/*
* Mesa 3-D graphics library
* Version: 4.1
*
* Copyright (C) 1999-2002 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.
*/
#include "glheader.h"
#include "colormac.h"
#include "context.h"
#include "macros.h"
#include "mmath.h"
#include "texstate.h"
#include "s_context.h"
#include "s_feedback.h"
#include "s_points.h"
#include "s_span.h"
#define RGBA 0x1
#define INDEX 0x2
#define SMOOTH 0x4
#define TEXTURE 0x8
#define SPECULAR 0x10
#define LARGE 0x20
#define ATTENUATE 0x40
#define SPRITE 0x80
/*
* CI points with size == 1.0
*/
#define FLAGS (INDEX)
#define NAME size1_ci_point
#include "s_pointtemp.h"
/*
* General CI points.
*/
#define FLAGS (INDEX | LARGE)
#define NAME general_ci_point
#include "s_pointtemp.h"
/*
* Antialiased CI points.
*/
#define FLAGS (INDEX | SMOOTH)
#define NAME antialiased_ci_point
#include "s_pointtemp.h"
/*
* Distance attenuated, general CI points.
*/
#define FLAGS (INDEX | ATTENUATE)
#define NAME atten_general_ci_point
#include "s_pointtemp.h"
/*
* RGBA points with size == 1.0
*/
#define FLAGS (RGBA)
#define NAME size1_rgba_point
#include "s_pointtemp.h"
/*
* General RGBA points.
*/
#define FLAGS (RGBA | LARGE)
#define NAME general_rgba_point
#include "s_pointtemp.h"
/*
* Antialiased RGBA points.
*/
#define FLAGS (RGBA | SMOOTH)
#define NAME antialiased_rgba_point
#include "s_pointtemp.h"
/*
* Textured RGBA points.
*/
#define FLAGS (RGBA | LARGE | TEXTURE | SPECULAR)
#define NAME textured_rgba_point
#include "s_pointtemp.h"
/*
* Antialiased points with texture mapping.
*/
#define FLAGS (RGBA | SMOOTH | TEXTURE | SPECULAR)
#define NAME antialiased_tex_rgba_point
#include "s_pointtemp.h"
/*
* Distance attenuated, general RGBA points.
*/
#define FLAGS (RGBA | ATTENUATE)
#define NAME atten_general_rgba_point
#include "s_pointtemp.h"
/*
* Distance attenuated, textured RGBA points.
*/
#define FLAGS (RGBA | ATTENUATE | TEXTURE | SPECULAR)
#define NAME atten_textured_rgba_point
#include "s_pointtemp.h"
/*
* Distance attenuated, antialiased points with or without texture mapping.
*/
#define FLAGS (RGBA | ATTENUATE | TEXTURE | SMOOTH)
#define NAME atten_antialiased_rgba_point
#include "s_pointtemp.h"
/*
* Sprite (textured point)
*/
#define FLAGS (RGBA | SPRITE)
#define NAME sprite_point
#include "s_pointtemp.h"
#define FLAGS (RGBA | ATTENUATE | SPRITE)
#define NAME atten_sprite_point
#include "s_pointtemp.h"
void _swrast_add_spec_terms_point( GLcontext *ctx,
const SWvertex *v0 )
{
SWvertex *ncv0 = (SWvertex *)v0;
GLchan c[1][4];
COPY_CHAN4( c[0], ncv0->color );
ACC_3V( ncv0->color, ncv0->specular );
SWRAST_CONTEXT(ctx)->SpecPoint( ctx, ncv0 );
COPY_CHAN4( ncv0->color, c[0] );
}
/* record the current point function name */
#ifdef DEBUG
static const char *pntFuncName = NULL;
#define USE(pntFunc) \
do { \
pntFuncName = #pntFunc; \
/*printf("%s\n", pntFuncName);*/ \
swrast->Point = pntFunc; \
} while (0)
#else
#define USE(pntFunc) swrast->Point = pntFunc
#endif
/*
* Examine the current context to determine which point drawing function
* should be used.
*/
void
_swrast_choose_point( GLcontext *ctx )
{
SWcontext *swrast = SWRAST_CONTEXT(ctx);
GLboolean rgbMode = ctx->Visual.rgbMode;
if (ctx->RenderMode==GL_RENDER) {
if (ctx->Point.PointSprite) {
/* GL_NV_point_sprite */
/* XXX this might not be good enough */
if (ctx->Point._Attenuated)
USE(atten_sprite_point);
else
USE(sprite_point);
}
else if (ctx->Point.SmoothFlag) {
/* Smooth points */
if (rgbMode) {
if (ctx->Point._Attenuated || ctx->VertexProgram.PointSizeEnabled) {
USE(atten_antialiased_rgba_point);
}
else if (ctx->Texture._EnabledUnits) {
USE(antialiased_tex_rgba_point);
}
else {
USE(antialiased_rgba_point);
}
}
else {
USE(antialiased_ci_point);
}
}
else if (ctx->Point._Attenuated || ctx->VertexProgram.PointSizeEnabled) {
if (rgbMode) {
if (ctx->Texture._EnabledUnits) {
if (ctx->Point.SmoothFlag) {
USE(atten_antialiased_rgba_point);
}
else {
USE(atten_textured_rgba_point);
}
}
else {
USE(atten_general_rgba_point);
}
}
else {
/* ci, atten */
USE(atten_general_ci_point);
}
}
else if (ctx->Texture._EnabledUnits && rgbMode) {
/* textured */
USE(textured_rgba_point);
}
else if (ctx->Point.Size != 1.0) {
/* large points */
if (rgbMode) {
USE(general_rgba_point);
}
else {
USE(general_ci_point);
}
}
else {
/* single pixel points */
if (rgbMode) {
USE(size1_rgba_point);
}
else {
USE(size1_ci_point);
}
}
}
else if (ctx->RenderMode==GL_FEEDBACK) {
USE(_mesa_feedback_point);
}
else {
/* GL_SELECT mode */
USE(_mesa_select_point);
}
}
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