void Scene::Render()
{
//glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
//draw mesh
glBindFramebuffer(GL_FRAMEBUFFER,_fbos[0]);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
Shader * curShader = shaders[0];
curShader->TurnOn();
initUniformVal(curShader);
glm::mat4 model;
// Floor cube
model = glm::translate(model, glm::vec3(0.0, -1.0f, 0.0f));
model = glm::scale(model, glm::vec3(20.0f, 1.0f, 20.0f));
int modelId = curShader->GetVariable("model");
curShader->SetMatrix4(modelId,1,false,glm::value_ptr(model));
drawCub(cub);
model = glm::mat4();
model = glm::translate(model, glm::vec3(0.0f, 0.0f, 5.0));
model = glm::rotate(model, -90.0f, glm::vec3(1.0, 0.0, 0.0));
model = glm::scale(model, glm::vec3(0.5f));
modelId = curShader->GetVariable("model");
curShader->SetMatrix4(modelId,1,false,glm::value_ptr(model));
_modes[0]->drawNode(curShader);
curShader->TurnOff();
glBindFramebuffer(GL_FRAMEBUFFER,0);
//ssao shader
glBindFramebuffer(GL_FRAMEBUFFER,_fbos[1]);
glClear(GL_COLOR_BUFFER_BIT);
curShader = shaders[1];
curShader->TurnOn();
initUniformVal(curShader);
GLint location;
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D,_textures[0]);
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_2D,_textures[1]);
glActiveTexture(GL_TEXTURE2);
glBindTexture(GL_TEXTURE_2D,noiseTexture);
for (GLuint i = 0; i < 64; ++i)
glUniform3fv(glGetUniformLocation(curShader->getShaderId(), ("samples[" + std::to_string((long long)(i)) + "]").c_str()), 1, &ssaoKernel[i][0]);
drawScreenQuad(screenQuatID);
curShader->TurnOff();
glBindFramebuffer(GL_FRAMEBUFFER,0);
if(useBlur)
{
//Blur SSAO
glBindFramebuffer(GL_FRAMEBUFFER,_fbos[2]);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
curShader = shaders[2];
curShader->TurnOn();
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D,_textures[3]);
drawScreenQuad(screenQuatID);
curShader->TurnOff();
glBindFramebuffer(GL_FRAMEBUFFER,0);
}
//light
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
curShader = shaders[3];
curShader->TurnOn();
location = shaders[3]->GetVariable("draw_mode");
shaders[3]->SetInt(location,draw_mode);
location = shaders[3]->GetVariable("gPositionDepth");
shaders[3]->SetInt(location,0);
location = shaders[3]->GetVariable("gNormal");
shaders[3]->SetInt(location,1);
location = shaders[3]->GetVariable("gAlbedo");
shaders[3]->SetInt(location,2);
location = shaders[3]->GetVariable("ssao");
shaders[3]->SetInt(location,3);
location = shaders[3]->GetVariable("light.Position");
glm::vec3 lightPosView = glm::vec3(camera->GetViewMatrix() * glm::vec4(lightPos, 1.0));
shaders[3]->SetFloat3V(location,1,glm::value_ptr(lightPosView));
location = shaders[3]->GetVariable("light.Color");
shaders[3]->SetFloat3V(location,1,glm::value_ptr(lightColor));
location = shaders[3]->GetVariable("light.Linear");
shaders[3]->SetFloat(location,0.09);
location = shaders[3]->GetVariable("light.Quadratic");
shaders[3]->SetFloat(location,0.032);
location = shaders[3]->GetVariable("useSSAO");
shaders[3]->SetInt(location,useSSAO);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D,_textures[0]);
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_2D,_textures[1]);
glActiveTexture(GL_TEXTURE2);
glBindTexture(GL_TEXTURE_2D,_textures[2]);
glActiveTexture(GL_TEXTURE3);
if(useBlur)
{
glBindTexture(GL_TEXTURE_2D,_textures[4]);
}
else
{
glBindTexture(GL_TEXTURE_2D,_textures[3]);
}
drawScreenQuad(screenQuatID);
curShader->TurnOff();
}
