Ayumiwii
123 lines
4.1 KiB
C++
123 lines
4.1 KiB
C++
#include "ShadowPass.h"
|
|
|
|
ShadowPass::ShadowPass(IRenderer * renderer)
|
|
{
|
|
m_Renderer = renderer;
|
|
|
|
//InitializeTextures();
|
|
InitializeFrameBuffers();
|
|
InitializeShaderPrograms();
|
|
}
|
|
|
|
ShadowPass::~ShadowPass()
|
|
{
|
|
|
|
}
|
|
|
|
|
|
void ShadowPass::InitializeFrameBuffers()
|
|
{
|
|
|
|
// glGenRenderbuffers(1, &m_DepthFBO);
|
|
// glBindRenderbuffer(GL_RENDERBUFFER, m_DepthFBO);
|
|
// glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT, m_Renderer->GetViewportSize().Width, m_Renderer->GetViewportSize().Height);
|
|
|
|
// Depth texture
|
|
glGenTextures(1, &m_DepthMap);
|
|
glBindTexture(GL_TEXTURE_2D, m_DepthMap);
|
|
//glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT, 1024, 1024, 0, GL_DEPTH_COMPONENT, GL_FLOAT, nullptr);
|
|
glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT, 1024, 1024, 0, GL_DEPTH_COMPONENT, GL_FLOAT, nullptr);
|
|
//glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB16F, 1024, 1024, 0, GL_RGB, GL_FLOAT, 0);
|
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
|
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
|
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
|
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
|
|
|
|
m_DepthBuffer.AddResource(std::shared_ptr<BufferResource>(new Texture2D(&m_DepthMap, GL_DEPTH_ATTACHMENT)));
|
|
//m_DepthBuffer.AddResource(std::shared_ptr<BufferResource>(new Texture2D(&m_DepthMap, GL_COLOR_ATTACHMENT0)));
|
|
m_DepthBuffer.Generate();
|
|
|
|
GLERROR("depthMap failed");
|
|
|
|
}
|
|
|
|
void ShadowPass::InitializeShaderPrograms()
|
|
{
|
|
m_ShadowProgram = ResourceManager::Load<ShaderProgram>("#ShadowProgram");
|
|
m_ShadowProgram->AddShader(std::shared_ptr<Shader>(new VertexShader("Shaders/Shadow.vert.glsl")));
|
|
m_ShadowProgram->AddShader(std::shared_ptr<Shader>(new FragmentShader("Shaders/Shadow.frag.glsl")));
|
|
m_ShadowProgram->Compile();
|
|
m_ShadowProgram->BindFragDataLocation(0, "ShadowMap");
|
|
m_ShadowProgram->Link();
|
|
}
|
|
|
|
void ShadowPass::ClearBuffer()
|
|
{
|
|
m_DepthBuffer.Bind();
|
|
glClearColor(0.f, 0.f, 0.f, 0.f);
|
|
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
|
m_DepthBuffer.Unbind();
|
|
}
|
|
|
|
void ShadowPass::Draw(RenderScene & scene)
|
|
{
|
|
ShadowPassState* state = new ShadowPassState(m_DepthBuffer.GetHandle());
|
|
|
|
GLuint shaderHandle = m_ShadowProgram->GetHandle();
|
|
m_ShadowProgram->Bind();
|
|
|
|
//if (scene.ClearDepth) {
|
|
// glClear(GL_COLOR_BUFFER_BIT);
|
|
//}
|
|
|
|
for (auto &job : scene.DirectionalLightJobs) {
|
|
auto directionalLightJob = std::dynamic_pointer_cast<DirectionalLightJob>(job);
|
|
|
|
if(directionalLightJob) {
|
|
|
|
GLfloat near_plane = 1.0f, far_plane = 200.5f;
|
|
glm::mat4 lightProjection = glm::ortho(-10.0f, 10.0f, -10.0f, 10.0f, near_plane, far_plane);
|
|
|
|
// broken?
|
|
//glm::mat4 lightView = glm::lookAt(-glm::normalize(glm::vec3(directionalLightJob->Direction)), glm::vec3(0,0,0), glm::vec3(0,1,0));
|
|
glm::mat4 lightView = glm::lookAt(glm::vec3(50.f, 50.f, 50.f), glm::vec3(0.f, 0.f, 0.f), glm::vec3(0.f, 1.f, 0.f));
|
|
//glm::mat4 lightSpaceMatrix = lightProjection * lightView;
|
|
|
|
glUniformMatrix4fv(glGetUniformLocation(shaderHandle, "P"), 1, GL_FALSE, glm::value_ptr(scene.Camera->ProjectionMatrix()));
|
|
glUniformMatrix4fv(glGetUniformLocation(shaderHandle, "V"), 1, GL_FALSE, glm::value_ptr(scene.Camera->ViewMatrix()));
|
|
|
|
GLERROR("ShadowLight ERROR");
|
|
|
|
for (auto &objectJob : scene.OpaqueObjects) {
|
|
auto modelJob = std::dynamic_pointer_cast<ModelJob>(objectJob);
|
|
|
|
glUniformMatrix4fv(glGetUniformLocation(shaderHandle, "M"), 1, GL_FALSE, glm::value_ptr(modelJob->Matrix));
|
|
|
|
glBindVertexArray(modelJob->Model->VAO);
|
|
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, modelJob->Model->ElementBuffer);
|
|
glDrawElements(GL_TRIANGLES, modelJob->EndIndex - modelJob->StartIndex + 1, GL_UNSIGNED_INT, (void*)(modelJob->StartIndex * sizeof(unsigned int)));
|
|
|
|
GLERROR("Shadow Draw ERROR");
|
|
|
|
}
|
|
|
|
}
|
|
|
|
m_DepthBuffer.Unbind();
|
|
|
|
delete state;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
//m_ShadowProgram->Unbind();
|
|
|
|
|
|
|
|
|
|
|
|
}
|