source: vbox/trunk/src/VBox/GuestHost/OpenGL/state_tracker/state_multisample.c@ 19099

/* 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 crStateMultisampleInit (CRContext *ctx)
{
        CRMultisampleState *m = &ctx->multisample;
        CRStateBits *sb       = GetCurrentBits();
        CRMultisampleBits *mb = &(sb->multisample);

        m->enabled = GL_FALSE; /* TRUE if the visual supports it */
        m->sampleAlphaToCoverage = GL_FALSE;
        m->sampleAlphaToOne = GL_FALSE;
        m->sampleCoverage = GL_FALSE;
        RESET(mb->enable, ctx->bitid);

        m->sampleCoverageValue = 1.0F;
        m->sampleCoverageInvert = GL_FALSE;
        RESET(mb->sampleCoverageValue, ctx->bitid);

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

void STATE_APIENTRY crStateSampleCoverageARB(GLclampf value, GLboolean invert)
{
        CRContext *g          = GetCurrentContext();
        CRMultisampleState *m = &(g->multisample);
        CRStateBits *sb       = GetCurrentBits();
        CRMultisampleBits *mb = &(sb->multisample);

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

        FLUSH();

        m->sampleCoverageValue = value;
        m->sampleCoverageInvert = invert;
        DIRTY(mb->dirty, g->neg_bitid);
        DIRTY(mb->sampleCoverageValue, g->neg_bitid);
}