void ofMaterial::initShaders(ofGLProgrammableRenderer & renderer) const{
if(!shadersInitialized || ofLightsData().size()!=shaderLights){
#ifndef TARGET_OPENGLES
string vertexRectHeader = renderer.defaultVertexShaderHeader(GL_TEXTURE_RECTANGLE);
string fragmentRectHeader = renderer.defaultFragmentShaderHeader(GL_TEXTURE_RECTANGLE);
#endif
string vertex2DHeader = renderer.defaultVertexShaderHeader(GL_TEXTURE_2D);
string fragment2DHeader = renderer.defaultFragmentShaderHeader(GL_TEXTURE_2D);
shaderLights = ofLightsData().size();
shaderNoTexture.setupShaderFromSource(GL_VERTEX_SHADER,vertexSource(vertex2DHeader,shaderLights,false));
shaderNoTexture.setupShaderFromSource(GL_FRAGMENT_SHADER,fragmentSource(fragment2DHeader,shaderLights,false));
shaderNoTexture.bindDefaults();
shaderNoTexture.linkProgram();
shaderTexture2D.setupShaderFromSource(GL_VERTEX_SHADER,vertexSource(vertex2DHeader,shaderLights,true));
shaderTexture2D.setupShaderFromSource(GL_FRAGMENT_SHADER,fragmentSource(fragment2DHeader,shaderLights,true));
shaderTexture2D.bindDefaults();
shaderTexture2D.linkProgram();
#ifndef TARGET_OPENGLES
shaderTextureRect.setupShaderFromSource(GL_VERTEX_SHADER,vertexSource(vertexRectHeader,shaderLights,true));
shaderTextureRect.setupShaderFromSource(GL_FRAGMENT_SHADER,fragmentSource(fragmentRectHeader,shaderLights,true));
shaderTextureRect.bindDefaults();
shaderTextureRect.linkProgram();
#endif
shadersInitialized = true;
}
}
void ofMaterial::updateLights(const ofShader & shader,ofGLProgrammableRenderer & renderer) const{
for(size_t i=0;i<ofLightsData().size();i++){
string idx = ofToString(i);
shared_ptr<ofLight::Data> light = ofLightsData()[i].lock();
if(!light || !light->isEnabled){
shader.setUniform1f("lights["+idx+"].enabled",0);
continue;
}
auto lightEyePosition = renderer.getCurrentViewMatrix() * light->position;
shader.setUniform1f("lights["+idx+"].enabled",1);
shader.setUniform1f("lights["+idx+"].type", light->lightType);
shader.setUniform4f("lights["+idx+"].position", lightEyePosition);
shader.setUniform4f("lights["+idx+"].ambient", light->ambientColor);
shader.setUniform4f("lights["+idx+"].specular", light->specularColor);
shader.setUniform4f("lights["+idx+"].diffuse", light->diffuseColor);
if(light->lightType!=OF_LIGHT_DIRECTIONAL){
shader.setUniform1f("lights["+idx+"].constantAttenuation", light->attenuation_constant);
shader.setUniform1f("lights["+idx+"].linearAttenuation", light->attenuation_linear);
shader.setUniform1f("lights["+idx+"].quadraticAttenuation", light->attenuation_quadratic);
}
if(light->lightType==OF_LIGHT_SPOT){
auto direction = toGlm(light->position).xyz() + light->direction;
auto direction4 = renderer.getCurrentViewMatrix() * glm::vec4(direction,1.0);
direction = direction4.xyz() / direction4.w;
direction = direction - lightEyePosition.xyz();
shader.setUniform3f("lights["+idx+"].spotDirection", glm::normalize(direction));
shader.setUniform1f("lights["+idx+"].spotExponent", light->exponent);
shader.setUniform1f("lights["+idx+"].spotCutoff", light->spotCutOff);
shader.setUniform1f("lights["+idx+"].spotCosCutoff", cos(ofDegToRad(light->spotCutOff)));
}else if(light->lightType==OF_LIGHT_DIRECTIONAL){
auto halfVector = glm::normalize(glm::vec4(0.f, 0.f, 1.f, 0.f) + lightEyePosition);
shader.setUniform3f("lights["+idx+"].halfVector", halfVector.xyz());
}else if(light->lightType==OF_LIGHT_AREA){
shader.setUniform1f("lights["+idx+"].width", light->width);
shader.setUniform1f("lights["+idx+"].height", light->height);
auto direction = light->position.xyz() + light->direction;
auto direction4 = renderer.getCurrentViewMatrix() * glm::vec4(direction, 1.0);
direction = direction4.xyz() / direction4.w;
direction = direction - lightEyePosition.xyz();
shader.setUniform3f("lights["+idx+"].spotDirection", glm::normalize(direction));
auto right = toGlm(light->position).xyz() + light->right;
auto right4 = renderer.getCurrentViewMatrix() * glm::vec4(right, 1.0);
right = right4.xyz() / right4.w;
right = right - lightEyePosition.xyz();
auto up = glm::cross(toGlm(right), direction);
shader.setUniform3f("lights["+idx+"].right", glm::normalize(toGlm(right)));
shader.setUniform3f("lights["+idx+"].up", glm::normalize(up));
}
}
}
void ofMaterial::initShaders(ofGLProgrammableRenderer & renderer) const{
auto rendererShaders = shaders.find(&renderer);
if(rendererShaders == shaders.end() || rendererShaders->second->numLights != ofLightsData().size()){
if(shadersMap[&renderer].find(data.postFragment)!=shadersMap[&renderer].end()){
auto newShaders = shadersMap[&renderer][data.postFragment].lock();
if(newShaders == nullptr || newShaders->numLights != ofLightsData().size()){
shadersMap[&renderer].erase(data.postFragment);
shaders[&renderer] = nullptr;
}else{
shaders[&renderer] = newShaders;
}
}
}
if(shaders[&renderer] == nullptr){
#ifndef TARGET_OPENGLES
string vertexRectHeader = renderer.defaultVertexShaderHeader(GL_TEXTURE_RECTANGLE);
string fragmentRectHeader = renderer.defaultFragmentShaderHeader(GL_TEXTURE_RECTANGLE);
#endif
string vertex2DHeader = renderer.defaultVertexShaderHeader(GL_TEXTURE_2D);
string fragment2DHeader = renderer.defaultFragmentShaderHeader(GL_TEXTURE_2D);
auto numLights = ofLightsData().size();
shaders[&renderer].reset(new Shaders);
shaders[&renderer]->numLights = numLights;
shaders[&renderer]->noTexture.setupShaderFromSource(GL_VERTEX_SHADER,vertexSource(vertex2DHeader,numLights,false,false));
shaders[&renderer]->noTexture.setupShaderFromSource(GL_FRAGMENT_SHADER,fragmentSource(fragment2DHeader, data.customUniforms, data.postFragment,numLights,false,false));
shaders[&renderer]->noTexture.bindDefaults();
shaders[&renderer]->noTexture.linkProgram();
shaders[&renderer]->texture2D.setupShaderFromSource(GL_VERTEX_SHADER,vertexSource(vertex2DHeader,numLights,true,false));
shaders[&renderer]->texture2D.setupShaderFromSource(GL_FRAGMENT_SHADER,fragmentSource(fragment2DHeader, data.customUniforms, data.postFragment,numLights,true,false));
shaders[&renderer]->texture2D.bindDefaults();
shaders[&renderer]->texture2D.linkProgram();
#ifndef TARGET_OPENGLES
shaders[&renderer]->textureRect.setupShaderFromSource(GL_VERTEX_SHADER,vertexSource(vertexRectHeader,numLights,true,false));
shaders[&renderer]->textureRect.setupShaderFromSource(GL_FRAGMENT_SHADER,fragmentSource(fragmentRectHeader, data.customUniforms, data.postFragment,numLights,true,false));
shaders[&renderer]->textureRect.bindDefaults();
shaders[&renderer]->textureRect.linkProgram();
#endif
shaders[&renderer]->color.setupShaderFromSource(GL_VERTEX_SHADER,vertexSource(vertex2DHeader,numLights,false,true));
shaders[&renderer]->color.setupShaderFromSource(GL_FRAGMENT_SHADER,fragmentSource(fragment2DHeader, data.customUniforms, data.postFragment,numLights,false,true));
shaders[&renderer]->color.bindDefaults();
shaders[&renderer]->color.linkProgram();
shaders[&renderer]->texture2DColor.setupShaderFromSource(GL_VERTEX_SHADER,vertexSource(vertex2DHeader,numLights,true,true));
shaders[&renderer]->texture2DColor.setupShaderFromSource(GL_FRAGMENT_SHADER,fragmentSource(fragment2DHeader, data.customUniforms, data.postFragment,numLights,true,true));
shaders[&renderer]->texture2DColor.bindDefaults();
shaders[&renderer]->texture2DColor.linkProgram();
#ifndef TARGET_OPENGLES
shaders[&renderer]->textureRectColor.setupShaderFromSource(GL_VERTEX_SHADER,vertexSource(vertexRectHeader,numLights,true,true));
shaders[&renderer]->textureRectColor.setupShaderFromSource(GL_FRAGMENT_SHADER,fragmentSource(fragmentRectHeader, data.customUniforms, data.postFragment,numLights,true,true));
shaders[&renderer]->textureRectColor.bindDefaults();
shaders[&renderer]->textureRectColor.linkProgram();
#endif
shadersMap[&renderer][data.postFragment] = shaders[&renderer];
}
}
void ofBaseMaterial::uploadMatrices(const ofShader & shader,ofGLProgrammableRenderer & renderer) const{
const ofMatrix4x4 & normalMatrix = renderer.getCurrentNormalMatrix();
shader.setUniformMatrix4f("normalMatrix",normalMatrix);
}
