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/**
* @file llglstates.h
* @brief LLGL states definitions
*
* $LicenseInfo:firstyear=2001&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2010, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
//THIS HEADER SHOULD ONLY BE INCLUDED FROM llgl.h
#ifndef LL_LLGLSTATES_H
#define LL_LLGLSTATES_H
#include "llimagegl.h"
//----------------------------------------------------------------------------
class LLGLDepthTest
{
// Enabled by default
public:
LLGLDepthTest(GLboolean depth_enabled, GLboolean write_enabled = GL_TRUE, GLenum depth_func = GL_LEQUAL);
~LLGLDepthTest();
void checkState();
GLboolean mPrevDepthEnabled;
GLenum mPrevDepthFunc;
GLboolean mPrevWriteEnabled;
private:
static GLboolean sDepthEnabled; // defaults to GL_FALSE
static GLenum sDepthFunc; // defaults to GL_LESS
static GLboolean sWriteEnabled; // defaults to GL_TRUE
};
//----------------------------------------------------------------------------
class LLGLSDefault
{
protected:
LLGLDisable mBlend, mCullFace;
public:
LLGLSDefault()
:
// Disable
mBlend(GL_BLEND),
mCullFace(GL_CULL_FACE)
{ }
};
class LLGLSObjectSelect
{
protected:
LLGLDisable mBlend;
LLGLEnable mCullFace;
public:
LLGLSObjectSelect()
: mBlend(GL_BLEND),
mCullFace(GL_CULL_FACE)
{ }
};
//----------------------------------------------------------------------------
class LLGLSUIDefault
{
protected:
LLGLEnable mBlend;
LLGLDisable mCullFace;
LLGLDepthTest mDepthTest;
public:
LLGLSUIDefault()
: mBlend(GL_BLEND),
mCullFace(GL_CULL_FACE),
mDepthTest(GL_FALSE, GL_TRUE, GL_LEQUAL)
{}
};
//----------------------------------------------------------------------------
class LLGLSPipeline
{
protected:
LLGLEnable mCullFace;
LLGLDepthTest mDepthTest;
public:
LLGLSPipeline()
: mCullFace(GL_CULL_FACE),
mDepthTest(GL_TRUE, GL_TRUE, GL_LEQUAL)
{ }
};
class LLGLSPipelineAlpha // : public LLGLSPipeline
{
protected:
LLGLEnable mBlend;
public:
LLGLSPipelineAlpha()
: mBlend(GL_BLEND)
{ }
};
class LLGLSPipelineSelection
{
protected:
LLGLDisable mCullFace;
public:
LLGLSPipelineSelection()
: mCullFace(GL_CULL_FACE)
{}
};
class LLGLSPipelineSkyBox
{
protected:
LLGLDisable mCullFace;
LLGLSquashToFarClip mSquashClip;
public:
LLGLSPipelineSkyBox();
~LLGLSPipelineSkyBox();
};
class LLGLSPipelineDepthTestSkyBox : public LLGLSPipelineSkyBox
{
public:
LLGLSPipelineDepthTestSkyBox(bool depth_test, bool depth_write);
LLGLDepthTest mDepth;
};
class LLGLSPipelineBlendSkyBox : public LLGLSPipelineDepthTestSkyBox
{
public:
LLGLSPipelineBlendSkyBox(bool depth_test, bool depth_write);
LLGLEnable mBlend;
};
class LLGLSTracker
{
protected:
LLGLEnable mCullFace, mBlend;
public:
LLGLSTracker() :
mCullFace(GL_CULL_FACE),
mBlend(GL_BLEND)
{ }
};
//----------------------------------------------------------------------------
#if GL_VERSION_1_1
class LLGLSSpecular
{
public:
F32 mShininess;
LLGLSSpecular(const LLColor4& color, F32 shininess)
{
mShininess = shininess;
if (mShininess > 0.0f)
{
glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, color.mV);
S32 shiny = (S32)(shininess*128.f);
shiny = llclamp(shiny,0,128);
glMateriali(GL_FRONT_AND_BACK, GL_SHININESS, shiny);
}
}
~LLGLSSpecular()
{
if (mShininess > 0.f)
{
glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, LLColor4(0.f,0.f,0.f,0.f).mV);
glMateriali(GL_FRONT_AND_BACK, GL_SHININESS, 0);
}
}
};
#endif
//----------------------------------------------------------------------------
#endif
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