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/**
* @file llmaterial.cpp
* @brief Material definition
*
* $LicenseInfo:firstyear=2006&license=viewerlgpl$
* 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
* $/LicenseInfo$
*/
#include "linden_common.h"
#include "llmaterial.h"
/**
* Materials cap parameters
*/
#define MATERIALS_CAP_NORMAL_MAP_FIELD "NormMap"
#define MATERIALS_CAP_NORMAL_MAP_OFFSET_X_FIELD "NormOffsetX"
#define MATERIALS_CAP_NORMAL_MAP_OFFSET_Y_FIELD "NormOffsetY"
#define MATERIALS_CAP_NORMAL_MAP_REPEAT_X_FIELD "NormRepeatX"
#define MATERIALS_CAP_NORMAL_MAP_REPEAT_Y_FIELD "NormRepeatY"
#define MATERIALS_CAP_NORMAL_MAP_ROTATION_FIELD "NormRotation"
#define MATERIALS_CAP_SPECULAR_MAP_FIELD "SpecMap"
#define MATERIALS_CAP_SPECULAR_MAP_OFFSET_X_FIELD "SpecOffsetX"
#define MATERIALS_CAP_SPECULAR_MAP_OFFSET_Y_FIELD "SpecOffsetY"
#define MATERIALS_CAP_SPECULAR_MAP_REPEAT_X_FIELD "SpecRepeatX"
#define MATERIALS_CAP_SPECULAR_MAP_REPEAT_Y_FIELD "SpecRepeatY"
#define MATERIALS_CAP_SPECULAR_MAP_ROTATION_FIELD "SpecRotation"
#define MATERIALS_CAP_SPECULAR_COLOR_FIELD "SpecColor"
#define MATERIALS_CAP_SPECULAR_EXP_FIELD "SpecExp"
#define MATERIALS_CAP_ENV_INTENSITY_FIELD "EnvIntensity"
#define MATERIALS_CAP_ALPHA_MASK_CUTOFF_FIELD "AlphaMaskCutoff"
#define MATERIALS_CAP_DIFFUSE_ALPHA_MODE_FIELD "DiffuseAlphaMode"
const LLColor4U LLMaterial::DEFAULT_SPECULAR_LIGHT_COLOR(255,255,255,255);
/**
* Materials constants
*/
const F32 MATERIALS_MULTIPLIER = 10000.f;
/**
* Helper functions
*/
template<typename T> T getMaterialField(const LLSD& data, const std::string& field, const LLSD::Type field_type)
{
if ( (data.has(field)) && (field_type == data[field].type()) )
{
return (T)data[field];
}
LL_ERRS() << "Missing or mistyped field '" << field << "' in material definition" << LL_ENDL;
return (T)LLSD();
}
// GCC didn't like the generic form above for some reason
template<> LLUUID getMaterialField(const LLSD& data, const std::string& field, const LLSD::Type field_type)
{
if ( (data.has(field)) && (field_type == data[field].type()) )
{
return data[field].asUUID();
}
LL_ERRS() << "Missing or mistyped field '" << field << "' in material definition" << LL_ENDL;
return LLUUID::null;
}
/**
* LLMaterial class
*/
const LLMaterial LLMaterial::null;
LLMaterial::LLMaterial()
: mNormalOffsetX(0.0f)
, mNormalOffsetY(0.0f)
, mNormalRepeatX(1.0f)
, mNormalRepeatY(1.0f)
, mNormalRotation(0.0f)
, mSpecularOffsetX(0.0f)
, mSpecularOffsetY(0.0f)
, mSpecularRepeatX(1.0f)
, mSpecularRepeatY(1.0f)
, mSpecularRotation(0.0f)
, mSpecularLightColor(LLMaterial::DEFAULT_SPECULAR_LIGHT_COLOR)
, mSpecularLightExponent(LLMaterial::DEFAULT_SPECULAR_LIGHT_EXPONENT)
, mEnvironmentIntensity(LLMaterial::DEFAULT_ENV_INTENSITY)
, mDiffuseAlphaMode(LLMaterial::DIFFUSE_ALPHA_MODE_BLEND)
, mAlphaMaskCutoff(0)
{
}
LLMaterial::LLMaterial(const LLSD& material_data)
{
fromLLSD(material_data);
}
LLSD LLMaterial::asLLSD() const
{
LLSD material_data;
material_data[MATERIALS_CAP_NORMAL_MAP_FIELD] = mNormalID;
material_data[MATERIALS_CAP_NORMAL_MAP_OFFSET_X_FIELD] = llround(mNormalOffsetX * MATERIALS_MULTIPLIER);
material_data[MATERIALS_CAP_NORMAL_MAP_OFFSET_Y_FIELD] = llround(mNormalOffsetY * MATERIALS_MULTIPLIER);
material_data[MATERIALS_CAP_NORMAL_MAP_REPEAT_X_FIELD] = llround(mNormalRepeatX * MATERIALS_MULTIPLIER);
material_data[MATERIALS_CAP_NORMAL_MAP_REPEAT_Y_FIELD] = llround(mNormalRepeatY * MATERIALS_MULTIPLIER);
material_data[MATERIALS_CAP_NORMAL_MAP_ROTATION_FIELD] = llround(mNormalRotation * MATERIALS_MULTIPLIER);
material_data[MATERIALS_CAP_SPECULAR_MAP_FIELD] = mSpecularID;
material_data[MATERIALS_CAP_SPECULAR_MAP_OFFSET_X_FIELD] = llround(mSpecularOffsetX * MATERIALS_MULTIPLIER);
material_data[MATERIALS_CAP_SPECULAR_MAP_OFFSET_Y_FIELD] = llround(mSpecularOffsetY * MATERIALS_MULTIPLIER);
material_data[MATERIALS_CAP_SPECULAR_MAP_REPEAT_X_FIELD] = llround(mSpecularRepeatX * MATERIALS_MULTIPLIER);
material_data[MATERIALS_CAP_SPECULAR_MAP_REPEAT_Y_FIELD] = llround(mSpecularRepeatY * MATERIALS_MULTIPLIER);
material_data[MATERIALS_CAP_SPECULAR_MAP_ROTATION_FIELD] = llround(mSpecularRotation * MATERIALS_MULTIPLIER);
material_data[MATERIALS_CAP_SPECULAR_COLOR_FIELD] = mSpecularLightColor.getValue();
material_data[MATERIALS_CAP_SPECULAR_EXP_FIELD] = mSpecularLightExponent;
material_data[MATERIALS_CAP_ENV_INTENSITY_FIELD] = mEnvironmentIntensity;
material_data[MATERIALS_CAP_DIFFUSE_ALPHA_MODE_FIELD] = mDiffuseAlphaMode;
material_data[MATERIALS_CAP_ALPHA_MASK_CUTOFF_FIELD] = mAlphaMaskCutoff;
return material_data;
}
void LLMaterial::fromLLSD(const LLSD& material_data)
{
mNormalID = getMaterialField<LLSD::UUID>(material_data, MATERIALS_CAP_NORMAL_MAP_FIELD, LLSD::TypeUUID);
mNormalOffsetX = (F32)getMaterialField<LLSD::Integer>(material_data, MATERIALS_CAP_NORMAL_MAP_OFFSET_X_FIELD, LLSD::TypeInteger) / MATERIALS_MULTIPLIER;
mNormalOffsetY = (F32)getMaterialField<LLSD::Integer>(material_data, MATERIALS_CAP_NORMAL_MAP_OFFSET_Y_FIELD, LLSD::TypeInteger) / MATERIALS_MULTIPLIER;
mNormalRepeatX = (F32)getMaterialField<LLSD::Integer>(material_data, MATERIALS_CAP_NORMAL_MAP_REPEAT_X_FIELD, LLSD::TypeInteger) / MATERIALS_MULTIPLIER;
mNormalRepeatY = (F32)getMaterialField<LLSD::Integer>(material_data, MATERIALS_CAP_NORMAL_MAP_REPEAT_Y_FIELD, LLSD::TypeInteger) / MATERIALS_MULTIPLIER;
mNormalRotation = (F32)getMaterialField<LLSD::Integer>(material_data, MATERIALS_CAP_NORMAL_MAP_ROTATION_FIELD, LLSD::TypeInteger) / MATERIALS_MULTIPLIER;
mSpecularID = getMaterialField<LLSD::UUID>(material_data, MATERIALS_CAP_SPECULAR_MAP_FIELD, LLSD::TypeUUID);
mSpecularOffsetX = (F32)getMaterialField<LLSD::Integer>(material_data, MATERIALS_CAP_SPECULAR_MAP_OFFSET_X_FIELD, LLSD::TypeInteger) / MATERIALS_MULTIPLIER;
mSpecularOffsetY = (F32)getMaterialField<LLSD::Integer>(material_data, MATERIALS_CAP_SPECULAR_MAP_OFFSET_Y_FIELD, LLSD::TypeInteger) / MATERIALS_MULTIPLIER;
mSpecularRepeatX = (F32)getMaterialField<LLSD::Integer>(material_data, MATERIALS_CAP_SPECULAR_MAP_REPEAT_X_FIELD, LLSD::TypeInteger) / MATERIALS_MULTIPLIER;
mSpecularRepeatY = (F32)getMaterialField<LLSD::Integer>(material_data, MATERIALS_CAP_SPECULAR_MAP_REPEAT_Y_FIELD, LLSD::TypeInteger) / MATERIALS_MULTIPLIER;
mSpecularRotation = (F32)getMaterialField<LLSD::Integer>(material_data, MATERIALS_CAP_SPECULAR_MAP_ROTATION_FIELD, LLSD::TypeInteger) / MATERIALS_MULTIPLIER;
mSpecularLightColor.setValue(getMaterialField<LLSD>(material_data, MATERIALS_CAP_SPECULAR_COLOR_FIELD, LLSD::TypeArray));
mSpecularLightExponent = (U8)getMaterialField<LLSD::Integer>(material_data, MATERIALS_CAP_SPECULAR_EXP_FIELD, LLSD::TypeInteger);
mEnvironmentIntensity = (U8)getMaterialField<LLSD::Integer>(material_data, MATERIALS_CAP_ENV_INTENSITY_FIELD, LLSD::TypeInteger);
mDiffuseAlphaMode = (U8)getMaterialField<LLSD::Integer>(material_data, MATERIALS_CAP_DIFFUSE_ALPHA_MODE_FIELD, LLSD::TypeInteger);
mAlphaMaskCutoff = (U8)getMaterialField<LLSD::Integer>(material_data, MATERIALS_CAP_ALPHA_MASK_CUTOFF_FIELD, LLSD::TypeInteger);
}
bool LLMaterial::isNull() const
{
return (*this == null);
}
bool LLMaterial::operator == (const LLMaterial& rhs) const
{
return
(mNormalID == rhs.mNormalID) && (mNormalOffsetX == rhs.mNormalOffsetX) && (mNormalOffsetY == rhs.mNormalOffsetY) &&
(mNormalRepeatX == rhs.mNormalRepeatX) && (mNormalRepeatY == rhs.mNormalRepeatY) && (mNormalRotation == rhs.mNormalRotation) &&
(mSpecularID == rhs.mSpecularID) && (mSpecularOffsetX == rhs.mSpecularOffsetX) && (mSpecularOffsetY == rhs.mSpecularOffsetY) &&
(mSpecularRepeatX == rhs.mSpecularRepeatX) && (mSpecularRepeatY == rhs.mSpecularRepeatY) && (mSpecularRotation == rhs.mSpecularRotation) &&
(mSpecularLightColor == rhs.mSpecularLightColor) && (mSpecularLightExponent == rhs.mSpecularLightExponent) &&
(mEnvironmentIntensity == rhs.mEnvironmentIntensity) && (mDiffuseAlphaMode == rhs.mDiffuseAlphaMode) && (mAlphaMaskCutoff == rhs.mAlphaMaskCutoff);
}
bool LLMaterial::operator != (const LLMaterial& rhs) const
{
return !(*this == rhs);
}
U32 LLMaterial::getShaderMask(U32 alpha_mode)
{ //NEVER incorporate this value into the message system -- this function will vary depending on viewer implementation
U32 ret = 0;
//two least significant bits are "diffuse alpha mode"
if (alpha_mode != DIFFUSE_ALPHA_MODE_DEFAULT)
{
ret = alpha_mode;
}
else
{
ret = getDiffuseAlphaMode();
}
llassert(ret < SHADER_COUNT);
//next bit is whether or not specular map is present
const U32 SPEC_BIT = 0x4;
if (getSpecularID().notNull())
{
ret |= SPEC_BIT;
}
llassert(ret < SHADER_COUNT);
//next bit is whether or not normal map is present
const U32 NORM_BIT = 0x8;
if (getNormalID().notNull())
{
ret |= NORM_BIT;
}
llassert(ret < SHADER_COUNT);
return ret;
}
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