source: vbox/trunk/src/VBox/GuestHost/OpenGL/state_tracker/state_line.c@ 55043

/* Copyright (c) 2001, Stanford University
 * All rights reserved
 *
 * See the file LICENSE.txt for information on redistributing this software.
 */

#include <stdio.h>
#include "state.h"
#include "state/cr_statetypes.h"
#include "state_internals.h"

void crStateLineInit (CRContext *ctx)
{
        CRLineState *l = &ctx->line;
        CRStateBits *sb = GetCurrentBits();
        CRLineBits *lb = &(sb->line);

        l->lineSmooth = GL_FALSE;
        l->lineStipple = GL_FALSE;
        RESET(lb->enable, ctx->bitid);
        l->width = 1.0f;
        RESET(lb->width, ctx->bitid);
        l->pattern = 0xFFFF;
        l->repeat = 1;
        RESET(lb->stipple, ctx->bitid);
        /*
         *l->aliasedlinewidth_min = c->aliasedlinewidth_min; 
         *l->aliasedlinewidth_max = c->aliasedlinewidth_max; 
         *l->aliasedlinegranularity = c->aliasedlinegranularity; 
         *l->smoothlinewidth_min = c->smoothlinewidth_min; 
         *l->smoothlinewidth_max = c->smoothlinewidth_max; 
         *l->smoothlinegranularity = c->smoothlinegranularity; */

        RESET(lb->dirty, ctx->bitid);
}

void STATE_APIENTRY crStateLineWidth(GLfloat width) 
{
        CRContext *g = GetCurrentContext();
        CRLineState *l = &(g->line);
        CRStateBits *sb = GetCurrentBits();
        CRLineBits *lb = &(sb->line);

        if (g->current.inBeginEnd)
        {
                crStateError(__LINE__, __FILE__, GL_INVALID_OPERATION, "glLineWidth called in begin/end");
                return;
        }

        FLUSH();

        if (width <= 0.0f) 
        {
                crStateError(__LINE__, __FILE__, GL_INVALID_VALUE, "glLineWidth called with size <= 0.0: %f", width);
                return;
        }

        l->width = width;
        DIRTY(lb->width, g->neg_bitid);
        DIRTY(lb->dirty, g->neg_bitid);
}

void STATE_APIENTRY crStateLineStipple(GLint factor, GLushort pattern) 
{
        CRContext *g = GetCurrentContext();
        CRLineState *l = &(g->line);
        CRStateBits *sb = GetCurrentBits();
        CRLineBits *lb = &(sb->line);

        if (g->current.inBeginEnd)
        {
                crStateError(__LINE__, __FILE__, GL_INVALID_OPERATION,
                        "glLineStipple called in begin/end");
                return;
        }

        FLUSH();

        if (factor < 1) factor = 1;
        if (factor > 256) factor = 256;

        l->pattern = pattern;
        l->repeat = factor;
        DIRTY(lb->stipple, g->neg_bitid);
        DIRTY(lb->dirty, g->neg_bitid);
}