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/**
* @file llcubemaparray.cpp
* @brief LLCubeMap class implementation
*
* $LicenseInfo:firstyear=2022&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2022, 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
* $/LicenseInfo$
*/
#include "linden_common.h"
#include "llworkerthread.h"
#include "llcubemaparray.h"
#include "v4coloru.h"
#include "v3math.h"
#include "v3dmath.h"
#include "m3math.h"
#include "m4math.h"
#include "llrender.h"
#include "llglslshader.h"
#include "llglheaders.h"
//#pragma optimize("", off)
// MUST match order of OpenGL face-layers
GLenum LLCubeMapArray::sTargets[6] =
{
GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB,
GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB,
GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB,
GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB,
GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB,
GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB
};
LLCubeMapArray::LLCubeMapArray()
: mTextureStage(0)
{
}
LLCubeMapArray::~LLCubeMapArray()
{
}
void LLCubeMapArray::allocate(U32 resolution, U32 components, U32 count)
{
U32 texname = 0;
LLImageGL::generateTextures(1, &texname);
mImage = new LLImageGL(resolution, resolution, components, TRUE);
mImage->setTexName(texname);
mImage->setTarget(sTargets[0], LLTexUnit::TT_CUBE_MAP_ARRAY);
mImage->setUseMipMaps(TRUE);
mImage->setHasMipMaps(TRUE);
bind(0);
glTexImage3D(GL_TEXTURE_CUBE_MAP_ARRAY_ARB, 0, GL_RGB, resolution, resolution, count*6, 0,
GL_RGB, GL_UNSIGNED_BYTE, nullptr);
mImage->setAddressMode(LLTexUnit::TAM_CLAMP);
mImage->setFilteringOption(LLTexUnit::TFO_ANISOTROPIC);
glGenerateMipmap(GL_TEXTURE_CUBE_MAP_ARRAY_ARB);
unbind();
}
void LLCubeMapArray::bind(S32 stage)
{
mTextureStage = stage;
gGL.getTexUnit(stage)->bindManual(LLTexUnit::TT_CUBE_MAP_ARRAY, getGLName(), TRUE);
}
void LLCubeMapArray::unbind()
{
gGL.getTexUnit(mTextureStage)->unbind(LLTexUnit::TT_CUBE_MAP_ARRAY);
mTextureStage = -1;
}
GLuint LLCubeMapArray::getGLName()
{
return mImage->getTexName();
}
void LLCubeMapArray::destroyGL()
{
mImage = NULL;
}
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