void LitColorMaterial::_lazyInitializeShader() {
//this shader contains everything the material can do (it can render something in 3d using a single color)
if (!_shader)
{
//create _shader for lights and _shaderSS for shadows START
_shader = new ShaderProgram();
_shader->addShader(GL_VERTEX_SHADER, config::MGE_SHADER_PATH+"litcolor.vs");
_shader->addShader(GL_FRAGMENT_SHADER, config::MGE_SHADER_PATH+"litcolor.fs");
_shader->finalize();
_shaderSS = new ShaderProgram();
_shaderSS->addShader(GL_VERTEX_SHADER, config::MGE_SHADER_PATH+"shadowMap.vs");
_shaderSS->addShader(GL_FRAGMENT_SHADER, config::MGE_SHADER_PATH+"shadowMap.fs");
_shaderSS->finalize();
_light_MVP2 = _shaderSS->getUniformLocation("light_MVP");
_aVertex2 = _shaderSS->getAttribLocation("vertex");
_aUV2 = _shaderSS->getAttribLocation("uv");
//create _shader for lights and _shaderSS for shadows END
//SHADOW SHADER: cachee all the uniform and attribute indexes
glEnable(GL_DEPTH_TEST);
glGenFramebuffers(1, &FBO);
for (unsigned int i = 0; i < World::Instance()->sceneLights().size(); ++i) {
Texture* texture = Texture::load("ShadowTexture_" + std::to_string(i), true);
_shadowTextures.push_back(texture);
}
glBindTexture(GL_TEXTURE_2D, _shadowTextures.at(0)->getId());
glBindFramebuffer(GL_FRAMEBUFFER, FBO);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, _shadowTextures.at(0)->getId(), 0);
glDrawBuffer(GL_NONE);
glReadBuffer(GL_NONE);
glBindFramebuffer(GL_FRAMEBUFFER, 0);
int i = glCheckFramebufferStatus(GL_FRAMEBUFFER);
if(i != GL_FRAMEBUFFER_COMPLETE) { std::cout << "Framebuffer is not OK, status=" << i << std::endl; }
//LIGHT SHADER: cachee all the uniform and attribute indexes
_uModelMatrix = _shader->getUniformLocation("modelMatrix");
_uViewMatrix = _shader->getUniformLocation("viewMatrix");
_uPerspectiveMatrix = _shader->getUniformLocation("perspectiveMatrix");
_light_MVP = _shader->getUniformLocation("light_MVP");
uCameraPosIndex = _shader->getUniformLocation ("cameraPos"); //eye|camera|view position
lightsUniforArraySize = _shader->getUniformLocation ("uniformArraySize");
_aVertex = _shader->getAttribLocation("vertex");
_aNormal = _shader->getAttribLocation("normal");
_aUV = _shader->getAttribLocation("uv");
tempSize = World::Instance()->sceneLights().size();
if (tempSize > 0) {
for (int i = 0; i < MAX_LIGHTS_NUM; ++i)
{
uGlobalAmbientIndex[i] = _shader->getUniformLocation (uniName("globalAmbient",i));
uDiffuseColorIndex[i] = _shader->getUniformLocation (uniName("diffuseColor",i));
uLightPositionIndex[i] = _shader->getUniformLocation (uniName("lightPosition",i));
uConeDirectionIndex[i] = _shader->getUniformLocation (uniName("coneDirection",i));
uConeAnglesIndex[i] = _shader->getUniformLocation (uniName("coneAngle",i));
}
}
}
}
void Program::ExtractUniformData()
{
Log("\tUniform : ");
char tempNameAR[1024];
GLint numUni = 0;
glGetProgramInterfaceiv(_program, GL_UNIFORM, GL_ACTIVE_RESOURCES, &numUni);
const GLenum propertiesAR[3] = { GL_TYPE, GL_LOCATION, GL_BLOCK_INDEX };
for (int uni = 0; uni < numUni; uni++)
{
GLint valuesAR[3];
glGetProgramResourceiv(_program, GL_UNIFORM, uni, 3, propertiesAR, 2, NULL, valuesAR);
glGetProgramResourceName(_program, GL_UNIFORM, uni, 1024, NULL, tempNameAR);
std::string uniName(tempNameAR);
_uniforms.insert(std::make_pair(uniName,AttributeInfo(uniName, GLenum(valuesAR[0]), valuesAR[1], GLUtil::SizeofGLSLType(GLenum(valuesAR[0])))));
Log("\t\t" + uniName + " " + ToString(valuesAR[1]) + " " + GLUtil::GLSLTypeToStr(GLenum(valuesAR[0])));
}
}
