Kearwood Gilbert
79abdd98d0
Will need to later refactor to allow for a more scalable means of adding per-model shader attributes. --HG-- branch : nfb
353 lines
16 KiB
C++
353 lines
16 KiB
C++
//
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// KRMaterial.cpp
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// KREngine
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//
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// Copyright 2012 Kearwood Gilbert. All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without modification, are
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// permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice, this list of
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// conditions and the following disclaimer.
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//
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// 2. Redistributions in binary form must reproduce the above copyright notice, this list
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// of conditions and the following disclaimer in the documentation and/or other materials
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// provided with the distribution.
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//
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// THIS SOFTWARE IS PROVIDED BY KEARWOOD GILBERT ''AS IS'' AND ANY EXPRESS OR IMPLIED
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// WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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// FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL KEARWOOD GILBERT OR
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// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// The views and conclusions contained in the software and documentation are those of the
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// authors and should not be interpreted as representing official policies, either expressed
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// or implied, of Kearwood Gilbert.
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//
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#include "KREngine-common.h"
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#include "KRMaterial.h"
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#include "KRTextureManager.h"
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#include "KRcontext.h"
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KRMaterial::KRMaterial(KRContext &context, const char *szName) : KRResource(context, szName) {
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m_name = szName;
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m_pAmbientMap = NULL;
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m_pDiffuseMap = NULL;
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m_pSpecularMap = NULL;
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m_pNormalMap = NULL;
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m_pReflectionMap = NULL;
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m_pReflectionCube = NULL;
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m_ambientColor = KRVector3::Zero();
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m_diffuseColor = KRVector3::One();
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m_specularColor = KRVector3::One();
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m_reflectionColor = KRVector3::Zero();
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m_tr = (GLfloat)1.0f;
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m_ns = (GLfloat)0.0f;
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m_ambientMap = "";
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m_diffuseMap = "";
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m_specularMap = "";
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m_normalMap = "";
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m_reflectionMap = "";
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m_reflectionCube = "";
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m_ambientMapOffset = KRVector2(0.0f, 0.0f);
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m_specularMapOffset = KRVector2(0.0f, 0.0f);
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m_diffuseMapOffset = KRVector2(0.0f, 0.0f);
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m_ambientMapScale = KRVector2(1.0f, 1.0f);
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m_specularMapScale = KRVector2(1.0f, 1.0f);
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m_diffuseMapScale = KRVector2(1.0f, 1.0f);
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m_reflectionMapOffset = KRVector2(0.0f, 0.0f);
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m_reflectionMapScale = KRVector2(1.0f, 1.0f);
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m_alpha_mode = KRMATERIAL_ALPHA_MODE_OPAQUE;
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}
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KRMaterial::~KRMaterial() {
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}
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std::string KRMaterial::getExtension() {
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return "mtl";
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}
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bool KRMaterial::needsVertexTangents()
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{
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return m_normalMap.size() > 0;
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}
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bool KRMaterial::save(KRDataBlock &data) {
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std::stringstream stream;
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stream.precision(std::numeric_limits<long double>::digits10);
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stream.setf(std::ios::fixed,std::ios::floatfield);
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stream << "newmtl " << m_name;
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stream << "\nka " << m_ambientColor.x << " " << m_ambientColor.y << " " << m_ambientColor.z;
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stream << "\nkd " << m_diffuseColor.x << " " << m_diffuseColor.y << " " << m_diffuseColor.z;
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stream << "\nks " << m_specularColor.x << " " << m_specularColor.y << " " << m_specularColor.z;
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stream << "\nkr " << m_reflectionColor.x << " " << m_reflectionColor.y << " " << m_reflectionColor.z;
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stream << "\nTr " << m_tr;
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stream << "\nNs " << m_ns;
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if(m_ambientMap.size()) {
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stream << "\nmap_Ka " << m_ambientMap << ".pvr -s " << m_ambientMapScale.x << " " << m_ambientMapScale.y << " -o " << m_ambientMapOffset.x << " " << m_ambientMapOffset.y;
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} else {
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stream << "\n# map_Ka filename.pvr -s 1.0 1.0 -o 0.0 0.0";
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}
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if(m_diffuseMap.size()) {
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stream << "\nmap_Kd " << m_diffuseMap << ".pvr -s " << m_diffuseMapScale.x << " " << m_diffuseMapScale.y << " -o " << m_diffuseMapOffset.x << " " << m_diffuseMapOffset.y;
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} else {
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stream << "\n# map_Kd filename.pvr -s 1.0 1.0 -o 0.0 0.0";
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}
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if(m_specularMap.size()) {
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stream << "\nmap_Ks " << m_specularMap << ".pvr -s " << m_specularMapScale.x << " " << m_specularMapScale.y << " -o " << m_specularMapOffset.x << " " << m_specularMapOffset.y << "\n";
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} else {
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stream << "\n# map_Ks filename.pvr -s 1.0 1.0 -o 0.0 0.0";
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}
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if(m_normalMap.size()) {
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stream << "\nmap_Normal " << m_normalMap << ".pvr -s " << m_normalMapScale.x << " " << m_normalMapScale.y << " -o " << m_normalMapOffset.x << " " << m_normalMapOffset.y;
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} else {
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stream << "\n# map_Normal filename.pvr -s 1.0 1.0 -o 0.0 0.0";
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}
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if(m_reflectionMap.size()) {
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stream << "\nmap_Reflection " << m_reflectionMap << ".pvr -s " << m_reflectionMapScale.x << " " << m_reflectionMapScale.y << " -o " << m_reflectionMapOffset.x << " " << m_reflectionMapOffset.y;
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} else {
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stream << "\n# map_Reflection filename.pvr -s 1.0 1.0 -o 0.0 0.0";
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}
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if(m_reflectionCube.size()) {
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stream << "map_ReflectionCube " << m_reflectionCube << ".pvr";
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} else {
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stream << "\n# map_ReflectionCube cubemapname";
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}
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switch(m_alpha_mode) {
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case KRMATERIAL_ALPHA_MODE_OPAQUE:
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stream << "\nalpha_mode opaque";
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break;
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case KRMATERIAL_ALPHA_MODE_TEST:
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stream << "\nalpha_mode test";
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break;
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case KRMATERIAL_ALPHA_MODE_BLENDONESIDE:
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stream << "\nalpha_mode blendoneside";
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break;
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case KRMATERIAL_ALPHA_MODE_BLENDTWOSIDE:
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stream << "\nalpha_mode blendtwoside";
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break;
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}
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stream << "\n# alpha_mode opaque, test, blendoneside, or blendtwoside";
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stream << "\n";
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data.append(stream.str());
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return true;
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}
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void KRMaterial::setAmbientMap(std::string texture_name, KRVector2 texture_scale, KRVector2 texture_offset) {
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m_ambientMap = texture_name;
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m_ambientMapScale = texture_scale;
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m_ambientMapOffset = texture_offset;
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}
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void KRMaterial::setDiffuseMap(std::string texture_name, KRVector2 texture_scale, KRVector2 texture_offset) {
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m_diffuseMap = texture_name;
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m_diffuseMapScale = texture_scale;
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m_diffuseMapOffset = texture_offset;
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}
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void KRMaterial::setSpecularMap(std::string texture_name, KRVector2 texture_scale, KRVector2 texture_offset) {
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m_specularMap = texture_name;
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m_specularMapScale = texture_scale;
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m_specularMapOffset = texture_offset;
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}
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void KRMaterial::setNormalMap(std::string texture_name, KRVector2 texture_scale, KRVector2 texture_offset) {
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m_normalMap = texture_name;
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m_normalMapScale = texture_scale;
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m_normalMapOffset = texture_offset;
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}
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void KRMaterial::setReflectionMap(std::string texture_name, KRVector2 texture_scale, KRVector2 texture_offset) {
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m_reflectionMap = texture_name;
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m_reflectionMapScale = texture_scale;
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m_reflectionMapOffset = texture_offset;
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}
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void KRMaterial::setReflectionCube(std::string texture_name) {
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m_reflectionCube = texture_name;
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}
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void KRMaterial::setAlphaMode(KRMaterial::alpha_mode_type alpha_mode) {
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m_alpha_mode = alpha_mode;
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}
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KRMaterial::alpha_mode_type KRMaterial::getAlphaMode() {
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return m_alpha_mode;
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}
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void KRMaterial::setAmbient(const KRVector3 &c) {
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m_ambientColor = c;
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}
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void KRMaterial::setDiffuse(const KRVector3 &c) {
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m_diffuseColor = c;
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}
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void KRMaterial::setSpecular(const KRVector3 &c) {
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m_specularColor = c;
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}
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void KRMaterial::setReflection(const KRVector3 &c) {
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m_reflectionColor = c;
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}
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void KRMaterial::setTransparency(GLfloat a) {
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if(a < 1.0f && m_alpha_mode == KRMaterial::KRMATERIAL_ALPHA_MODE_OPAQUE) {
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setAlphaMode(KRMaterial::KRMATERIAL_ALPHA_MODE_BLENDONESIDE);
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}
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m_tr = a;
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}
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void KRMaterial::setShininess(GLfloat s) {
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m_ns = s;
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}
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bool KRMaterial::isTransparent() {
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return m_tr < 1.0 || m_alpha_mode == KRMATERIAL_ALPHA_MODE_BLENDONESIDE || m_alpha_mode == KRMATERIAL_ALPHA_MODE_BLENDTWOSIDE;
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}
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bool KRMaterial::bind(KRCamera *pCamera, std::vector<KRPointLight *> &point_lights, std::vector<KRDirectionalLight *> &directional_lights, std::vector<KRSpotLight *>&spot_lights, const std::vector<KRBone *> &bones, const std::vector<KRMat4> &bind_poses, const KRViewport &viewport, const KRMat4 &matModel, KRTexture *pLightMap, KRNode::RenderPass renderPass, const KRVector3 &rim_color, float rim_power) {
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bool bLightMap = pLightMap && pCamera->settings.bEnableLightMap;
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if(!m_pAmbientMap && m_ambientMap.size()) {
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m_pAmbientMap = getContext().getTextureManager()->getTexture(m_ambientMap);
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}
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if(!m_pDiffuseMap && m_diffuseMap.size()) {
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m_pDiffuseMap = getContext().getTextureManager()->getTexture(m_diffuseMap);
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}
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if(!m_pNormalMap && m_normalMap.size()) {
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m_pNormalMap = getContext().getTextureManager()->getTexture(m_normalMap);
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}
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if(!m_pSpecularMap && m_specularMap.size()) {
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m_pSpecularMap = getContext().getTextureManager()->getTexture(m_specularMap);
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}
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if(!m_pReflectionMap && m_reflectionMap.size()) {
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m_pReflectionMap = getContext().getTextureManager()->getTexture(m_reflectionMap);
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}
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if(!m_pReflectionCube && m_reflectionCube.size()) {
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m_pReflectionCube = getContext().getTextureManager()->getTextureCube(m_reflectionCube.c_str());
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}
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KRVector2 default_scale = KRVector2::One();
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KRVector2 default_offset = KRVector2::Zero();
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bool bHasReflection = m_reflectionColor != KRVector3::Zero();
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bool bDiffuseMap = m_pDiffuseMap != NULL && pCamera->settings.bEnableDiffuseMap;
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bool bNormalMap = m_pNormalMap != NULL && pCamera->settings.bEnableNormalMap;
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bool bSpecMap = m_pSpecularMap != NULL && pCamera->settings.bEnableSpecMap;
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bool bReflectionMap = m_pReflectionMap != NULL && pCamera->settings.bEnableReflectionMap && pCamera->settings.bEnableReflection && bHasReflection;
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bool bReflectionCubeMap = m_pReflectionCube != NULL && pCamera->settings.bEnableReflection && bHasReflection;
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bool bAlphaTest = (m_alpha_mode == KRMATERIAL_ALPHA_MODE_TEST) && bDiffuseMap;
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bool bAlphaBlend = (m_alpha_mode == KRMATERIAL_ALPHA_MODE_BLENDONESIDE) || (m_alpha_mode == KRMATERIAL_ALPHA_MODE_BLENDTWOSIDE);
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KRShader *pShader = getContext().getShaderManager()->getShader("ObjectShader", pCamera, point_lights, directional_lights, spot_lights, bones.size(), bDiffuseMap, bNormalMap, bSpecMap, bReflectionMap, bReflectionCubeMap, bLightMap, m_diffuseMapScale != default_scale && bDiffuseMap, m_specularMapScale != default_scale && bSpecMap, m_normalMapScale != default_scale && bNormalMap, m_reflectionMapScale != default_scale && bReflectionMap, m_diffuseMapOffset != default_offset && bDiffuseMap, m_specularMapOffset != default_offset && bSpecMap, m_normalMapOffset != default_offset && bNormalMap, m_reflectionMapOffset != default_offset && bReflectionMap, bAlphaTest, bAlphaBlend, renderPass, rim_power != 0.0f);
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if(!getContext().getShaderManager()->selectShader(*pCamera, pShader, viewport, matModel, point_lights, directional_lights, spot_lights, 0, renderPass, rim_color, rim_power)) {
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return false;
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}
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// Bind bones
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if(pShader->m_uniforms[KRShader::KRENGINE_UNIFORM_BONE_TRANSFORMS] != -1) {
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GLfloat bone_mats[256 * 16];
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GLfloat *bone_mat_component = bone_mats;
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for(int bone_index=0; bone_index < bones.size(); bone_index++) {
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KRBone *bone = bones[bone_index];
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// KRVector3 initialRotation = bone->getInitialLocalRotation();
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// KRVector3 rotation = bone->getLocalRotation();
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// KRVector3 initialTranslation = bone->getInitialLocalTranslation();
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// KRVector3 translation = bone->getLocalTranslation();
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// KRVector3 initialScale = bone->getInitialLocalScale();
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// KRVector3 scale = bone->getLocalScale();
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//
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//printf("%s - delta rotation: %.4f %.4f %.4f\n", bone->getName().c_str(), (rotation.x - initialRotation.x) * 180.0 / M_PI, (rotation.y - initialRotation.y) * 180.0 / M_PI, (rotation.z - initialRotation.z) * 180.0 / M_PI);
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//printf("%s - delta translation: %.4f %.4f %.4f\n", bone->getName().c_str(), translation.x - initialTranslation.x, translation.y - initialTranslation.y, translation.z - initialTranslation.z);
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// printf("%s - delta scale: %.4f %.4f %.4f\n", bone->getName().c_str(), scale.x - initialScale.x, scale.y - initialScale.y, scale.z - initialScale.z);
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KRMat4 skin_bone_bind_pose = bind_poses[bone_index];
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KRMat4 active_mat = bone->getActivePoseMatrix();
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KRMat4 inv_bind_mat = bone->getInverseBindPoseMatrix();
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KRMat4 inv_bind_mat2 = KRMat4::Invert(bind_poses[bone_index]);
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KRMat4 t = (inv_bind_mat * active_mat);
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KRMat4 t2 = inv_bind_mat2 * bone->getModelMatrix();
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for(int i=0; i < 16; i++) {
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*bone_mat_component++ = t[i];
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}
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}
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if(pShader->m_uniforms[KRShader::KRENGINE_UNIFORM_BONE_TRANSFORMS] != -1) {
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glUniformMatrix4fv(pShader->m_uniforms[KRShader::KRENGINE_UNIFORM_BONE_TRANSFORMS], bones.size(), GL_FALSE, bone_mats);
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}
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}
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pShader->setUniform(KRShader::KRENGINE_UNIFORM_MATERIAL_AMBIENT, m_ambientColor + pCamera->settings.ambient_intensity);
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if(renderPass == KRNode::RENDER_PASS_FORWARD_OPAQUE) {
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// We pre-multiply the light color with the material color in the forward renderer
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pShader->setUniform(KRShader::KRENGINE_UNIFORM_MATERIAL_DIFFUSE, KRVector3(m_diffuseColor.x * pCamera->settings.light_intensity.x, m_diffuseColor.y * pCamera->settings.light_intensity.y, m_diffuseColor.z * pCamera->settings.light_intensity.z));
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} else {
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pShader->setUniform(KRShader::KRENGINE_UNIFORM_MATERIAL_DIFFUSE, m_diffuseColor);
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}
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if(renderPass == KRNode::RENDER_PASS_FORWARD_OPAQUE) {
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// We pre-multiply the light color with the material color in the forward renderer
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pShader->setUniform(KRShader::KRENGINE_UNIFORM_MATERIAL_SPECULAR, KRVector3(m_specularColor.x * pCamera->settings.light_intensity.x, m_specularColor.y * pCamera->settings.light_intensity.y, m_specularColor.z * pCamera->settings.light_intensity.z));
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} else {
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pShader->setUniform(KRShader::KRENGINE_UNIFORM_MATERIAL_SPECULAR, m_specularColor);
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}
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pShader->setUniform(KRShader::KRENGINE_UNIFORM_MATERIAL_SHININESS, m_ns);
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pShader->setUniform(KRShader::KRENGINE_UNIFORM_MATERIAL_REFLECTION, m_reflectionColor);
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pShader->setUniform(KRShader::KRENGINE_UNIFORM_DIFFUSETEXTURE_SCALE, m_diffuseMapScale);
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pShader->setUniform(KRShader::KRENGINE_UNIFORM_SPECULARTEXTURE_SCALE, m_specularMapScale);
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pShader->setUniform(KRShader::KRENGINE_UNIFORM_REFLECTIONTEXTURE_SCALE, m_reflectionMapScale);
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pShader->setUniform(KRShader::KRENGINE_UNIFORM_NORMALTEXTURE_SCALE, m_normalMapScale);
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pShader->setUniform(KRShader::KRENGINE_UNIFORM_DIFFUSETEXTURE_OFFSET, m_diffuseMapOffset);
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pShader->setUniform(KRShader::KRENGINE_UNIFORM_SPECULARTEXTURE_OFFSET, m_specularMapOffset);
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pShader->setUniform(KRShader::KRENGINE_UNIFORM_REFLECTIONTEXTURE_OFFSET, m_reflectionMapOffset);
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pShader->setUniform(KRShader::KRENGINE_UNIFORM_NORMALTEXTURE_OFFSET, m_normalMapOffset);
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pShader->setUniform(KRShader::KRENGINE_UNIFORM_MATERIAL_ALPHA, m_tr);
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if(bDiffuseMap) {
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m_pContext->getTextureManager()->selectTexture(0, m_pDiffuseMap);
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}
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if(bSpecMap) {
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m_pContext->getTextureManager()->selectTexture(1, m_pSpecularMap);
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}
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if(bNormalMap) {
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m_pContext->getTextureManager()->selectTexture(2, m_pNormalMap);
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}
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if(bReflectionCubeMap && (renderPass == KRNode::RENDER_PASS_FORWARD_OPAQUE || renderPass == KRNode::RENDER_PASS_DEFERRED_OPAQUE)) {
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m_pContext->getTextureManager()->selectTexture(4, m_pReflectionCube);
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}
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if(bReflectionMap && (renderPass == KRNode::RENDER_PASS_FORWARD_OPAQUE || renderPass == KRNode::RENDER_PASS_DEFERRED_OPAQUE)) {
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// GL_TEXTURE7 is used for reading the depth buffer in gBuffer pass 2 and re-used for the reflection map in gBuffer Pass 3 and in forward rendering
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m_pContext->getTextureManager()->selectTexture(7, m_pReflectionMap);
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}
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return true;
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}
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const std::string &KRMaterial::getName() const
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{
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return m_name;
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}
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