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761b8e21e19525949bd52ab158e477bd40d47f57
fishtanks/src/Renderer.cpp
T
Tleety 761b8e21e1 Added blendmap component 
Added renderque for models with a blendmap component
Added shaders for blendmaps
2014-05-28 20:24:31 +02:00

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#include "PrecompiledHeader.h"
#include "Renderer.h"
Renderer::Renderer(std::shared_ptr<::ResourceManager> resourceManager)
: ResourceManager(resourceManager)
{
m_VSync = false;
#ifdef DEBUG
m_DrawNormals = false;
m_DrawWireframe = false;
m_DrawBounds = true;
#else
m_DrawNormals = false;
m_DrawWireframe = false;
m_DrawBounds = false;
#endif
Gamma = 0.85f;
CAtt = 1.0f;
LAtt = 0.0f;
QAtt = 3.0f;
m_ShadowMapRes = 2048*2;
m_SunPosition = glm::vec3(0.f, 1.0f, 0.5f);
m_SunTarget = glm::vec3(0, 0, 0);
m_SunProjection_height = glm::vec2(-40.f, 40.f);
m_SunProjection_width = glm::vec2(-40.f, 40.f);
m_SunProjection_length = glm::vec2(-500.f, 500.f);
m_SunProjection = glm::ortho<float>(m_SunProjection_width.x, m_SunProjection_width.y, m_SunProjection_height.x, m_SunProjection_height.y, m_SunProjection_length.x, m_SunProjection_length.y);
/* Lights = 0;*/
}
void Renderer::Initialize()
{
// Initialize GLFW
if (!glfwInit())
{
LOG_ERROR("GLFW: Initialization failed");
exit(EXIT_FAILURE);
}
// Create a window
m_Width = 1280;
m_Height = 720;
// Antialiasing
//glfwWindowHint(GLFW_SAMPLES, 16);
m_Window = glfwCreateWindow(m_Width, m_Height, "OpenGL", nullptr, nullptr);
if (!m_Window)
{
LOG_ERROR("GLFW: Failed to create window");
exit(EXIT_FAILURE);
}
glfwMakeContextCurrent(m_Window);
// GL version info
glGetIntegerv(GL_MAJOR_VERSION, &m_glVersion[0]);
glGetIntegerv(GL_MINOR_VERSION, &m_glVersion[1]);
m_glVendor = (GLchar*)glGetString(GL_VENDOR);
std::stringstream ss;
ss << m_glVendor << " OpenGL " << m_glVersion[0] << "." << m_glVersion[1];
#ifdef DEBUG
ss << " DEBUG";
#endif
LOG_INFO(ss.str().c_str());
glfwSetWindowTitle(m_Window, ss.str().c_str());
// Initialize GLEW
if (glewInit() != GLEW_OK)
{
LOG_ERROR("GLEW: Initialization failed");
exit(EXIT_FAILURE);
}
// Create Camera
m_Camera = std::make_shared<Camera>(45.f, 0.01f, 1000.f);
m_Camera->SetPosition(glm::vec3(0.0f, 0.0f, 2.f));
glfwSwapInterval(m_VSync);
glEnable(GL_CULL_FACE);
glCullFace(GL_BACK);
glEnable(GL_DEPTH_TEST);
glEnable(GL_SCISSOR_TEST);
LoadContent();
}
void Renderer::LoadContent()
{
/*auto standardVS = std::shared_ptr<Shader>(new VertexShader("Shaders/Vertex.glsl"));
auto standardFS = std::shared_ptr<Shader>(new FragmentShader("Shaders/Fragment.glsl"));
m_ShaderProgram.AddShader(standardVS);
m_ShaderProgram.AddShader(standardFS);
m_ShaderProgram.Compile();
m_ShaderProgram.Link();
m_ShaderProgramNormals.AddShader(std::shared_ptr<Shader>(new GeometryShader("Shaders/Normals.geo.glsl")));
m_ShaderProgramNormals.AddShader(standardVS);
m_ShaderProgramNormals.AddShader(std::shared_ptr<Shader>(new FragmentShader("Shaders/Normals.frag.glsl")));
m_ShaderProgramNormals.Compile();
m_ShaderProgramNormals.Link();
m_ShaderProgramShadowsDrawDepth.AddShader(std::shared_ptr<Shader>(new VertexShader("Shaders/VisualizeDepth.vert.glsl")));
m_ShaderProgramShadowsDrawDepth.AddShader(std::shared_ptr<Shader>(new FragmentShader("Shaders/VisualizeDepth.frag.glsl")));
m_ShaderProgramShadowsDrawDepth.Compile();
m_ShaderProgramShadowsDrawDepth.Link();
m_ShaderProgramDebugAABB.AddShader(standardVS);
m_ShaderProgramDebugAABB.AddShader(std::shared_ptr<Shader>(new FragmentShader("Shaders/AABB.frag.glsl")));
m_ShaderProgramDebugAABB.Compile();
m_ShaderProgramDebugAABB.Link();*/
m_BlendMapProgram.AddShader(std::shared_ptr<Shader>(new VertexShader("Shaders/BlendMap.vert.glsl")));
m_BlendMapProgram.AddShader(std::shared_ptr<Shader>(new FragmentShader("Shaders/BlendMap.frag.glsl")));
m_BlendMapProgram.Compile();
m_BlendMapProgram.Link();
m_ShaderProgramSkybox.AddShader(std::shared_ptr<Shader>(new VertexShader("Shaders/Skybox.vert.glsl")));
m_ShaderProgramSkybox.AddShader(std::shared_ptr<Shader>(new FragmentShader("Shaders/Skybox.frag.glsl")));
m_ShaderProgramSkybox.Compile();
m_ShaderProgramSkybox.Link();
m_SunPassProgram.AddShader(std::shared_ptr<Shader>(new VertexShader("Shaders/SunPass.vert.glsl")));
m_SunPassProgram.AddShader(std::shared_ptr<Shader>(new FragmentShader("Shaders/SunPass.frag.glsl")));
m_SunPassProgram.Compile();
m_SunPassProgram.Link();
m_ForwardRendering.AddShader(std::shared_ptr<Shader>(new VertexShader("Shaders/ForwardRendering.vert.glsl")));
m_ForwardRendering.AddShader(std::shared_ptr<Shader>(new FragmentShader("Shaders/ForwardRendering.frag.glsl")));
m_ForwardRendering.Compile();
m_ForwardRendering.Link();
m_ShaderProgramShadows.AddShader(std::shared_ptr<Shader>(new VertexShader("Shaders/ShadowMap.vert.glsl")));
m_ShaderProgramShadows.AddShader(std::shared_ptr<Shader>(new FragmentShader("Shaders/ShadowMap.frag.glsl")));
m_ShaderProgramShadows.Compile();
m_ShaderProgramShadows.Link();
m_FirstPassProgram.AddShader(std::shared_ptr<Shader>(new VertexShader("Shaders/Vertex.glsl")));
m_FirstPassProgram.AddShader(std::shared_ptr<Shader>(new FragmentShader("Shaders/Fragment.glsl")));
m_FirstPassProgram.Compile();
glBindFragDataLocation(m_FirstPassProgram.GetHandle(), 0, "frag_Diffuse");
glBindFragDataLocation(m_FirstPassProgram.GetHandle(), 1, "frag_Position");
glBindFragDataLocation(m_FirstPassProgram.GetHandle(), 2, "frag_Normal");
m_FirstPassProgram.Link();
m_SecondPassProgram.AddShader(std::shared_ptr<Shader>(new VertexShader("Shaders/Vertex2.glsl")));
m_SecondPassProgram.AddShader(std::shared_ptr<Shader>(new FragmentShader("Shaders/Fragment2.glsl")));
m_SecondPassProgram.Compile();
m_SecondPassProgram.Link();
m_SecondPassProgram_Debug.AddShader(std::shared_ptr<Shader>(new VertexShader("Shaders/Vertex2.glsl")));
m_SecondPassProgram_Debug.AddShader(std::shared_ptr<Shader>(new FragmentShader("Shaders/Fragment2-Debug.glsl")));
m_SecondPassProgram_Debug.Compile();
m_SecondPassProgram_Debug.Link();
m_FinalPassProgram.AddShader(std::shared_ptr<Shader>(new VertexShader("Shaders/FinalPass.vert.glsl")));
m_FinalPassProgram.AddShader(std::shared_ptr<Shader>(new FragmentShader("Shaders/FinalPass.frag.glsl")));
m_FinalPassProgram.Compile();
m_FinalPassProgram.Link();
m_ScreenQuad = CreateQuad();
CreateShadowMap(m_ShadowMapRes);
FrameBufferTextures();
m_sphereModel = ResourceManager->Load<Model>("Model", "Models/Placeholders/PhysicsTest/Sphere.obj");
m_Skybox = std::make_shared<Skybox>("Textures/Skybox/Sunset", "jpg");
}
void Renderer::Draw(double dt)
{
if(glfwGetKey(m_Window, GLFW_KEY_F1))
{
m_QuadView = false;
}
if(glfwGetKey(m_Window, GLFW_KEY_F2))
{
m_QuadView = true;
}
//if(glfwGetKey(m_Window, GLFW_KEY_KP_1))
//{
// Gamma -= 0.3f * dt;
// LOG_INFO("Gamma_UP: %f", Gamma);
//}
//if(glfwGetKey(m_Window, GLFW_KEY_KP_4))
//{
// Gamma += 0.3f * dt;
// LOG_INFO("Gamma_DOWN: %f", Gamma);
//}
if(glfwGetKey(m_Window, GLFW_KEY_KP_7))
{
m_SunProjection_height.x += 10.f * dt;
LOG_INFO("Heightx+: %f", m_SunProjection_height);
m_SunProjection = glm::ortho<float>(m_SunProjection_width.x, m_SunProjection_width.y, m_SunProjection_height.x, m_SunProjection_height.y, m_SunProjection_length.x, m_SunProjection_length.y);
}
else if(glfwGetKey(m_Window, GLFW_KEY_KP_4))
{
m_SunProjection_height.x -= 10.f * dt;
LOG_INFO("Heightx-: %f", m_SunProjection_height);
m_SunProjection = glm::ortho<float>(m_SunProjection_width.x, m_SunProjection_width.y, m_SunProjection_height.x, m_SunProjection_height.y, m_SunProjection_length.x, m_SunProjection_length.y);
}
if(glfwGetKey(m_Window, GLFW_KEY_KP_8))
{
m_SunProjection_height.y += 10.f * dt;
LOG_INFO("Heightx+: %f", m_SunProjection_height);
m_SunProjection = glm::ortho<float>(m_SunProjection_width.x, m_SunProjection_width.y, m_SunProjection_height.x, m_SunProjection_height.y, m_SunProjection_length.x, m_SunProjection_length.y);
}
else if(glfwGetKey(m_Window, GLFW_KEY_KP_5))
{
m_SunProjection_height.y -= 10.f * dt;
LOG_INFO("Heightx-: %f", m_SunProjection_height);
m_SunProjection = glm::ortho<float>(m_SunProjection_width.x, m_SunProjection_width.y, m_SunProjection_height.x, m_SunProjection_height.y, m_SunProjection_length.x, m_SunProjection_length.y);
}
if(glfwGetKey(m_Window, GLFW_KEY_1))
{
if(glfwGetKey(m_Window, GLFW_KEY_KP_ADD))
{
CAtt += 0.5f * dt;
LOG_INFO("Const: %f", CAtt);
}
if(glfwGetKey(m_Window, GLFW_KEY_KP_SUBTRACT))
{
CAtt -= 0.5f * dt;
LOG_INFO("Const: %f", CAtt);
}
}
if(glfwGetKey(m_Window, GLFW_KEY_2))
{
if(glfwGetKey(m_Window, GLFW_KEY_KP_ADD))
{
LAtt += 0.5f * dt;
LOG_INFO("Linear: %f", LAtt);
}
if(glfwGetKey(m_Window, GLFW_KEY_KP_SUBTRACT))
{
LAtt -= 0.5f * dt;
LOG_INFO("Linear: %f", LAtt);
}
}
if(glfwGetKey(m_Window, GLFW_KEY_3))
{
if(glfwGetKey(m_Window, GLFW_KEY_KP_ADD))
{
QAtt += 0.5f * dt;
LOG_INFO("Quadratic: %f", QAtt);
}
if(glfwGetKey(m_Window, GLFW_KEY_KP_SUBTRACT))
{
QAtt -= 0.5f * dt;
LOG_INFO("Quadratic: %f", QAtt);
}
}
glDisable(GL_BLEND);
DrawFBO();
ClearStuff();
glfwSwapBuffers(m_Window);
}
void Renderer::DrawFrame(RenderQueue &rq)
{
glBindFramebuffer(GL_FRAMEBUFFER, 0);
glViewport(m_Viewport.X, -m_Viewport.Y, m_Viewport.Width, m_Viewport.Height);
glScissor(m_Viewport.X, -m_Viewport.Y, m_Viewport.Width, m_Viewport.Height);
//glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
//glClearColor(0.0f, 0.5f, 0.0f, 1.0f);
glDisable(GL_DEPTH_TEST);
glEnable(GL_CULL_FACE);
glCullFace(GL_BACK);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
//glm::mat4 cameraMatrix = m_Camera->ProjectionMatrix((float)m_Width / m_Height) * m_Camera->ViewMatrix();
//glm::mat4 MVP;
m_ForwardRendering.Bind();
//for (auto tuple : ModelsToRender) //// Todo: Add so it's TransparentModelsToRender
//{
// Model* model;
// glm::mat4 modelMatrix;
// bool visible;
// std::tie(model, modelMatrix, visible, std::ignore) = tuple;
// if (!visible)
// continue;
// MVP = cameraMatrix * modelMatrix;
// glUniformMatrix4fv(glGetUniformLocation(m_ForwardRendering.GetHandle(), "MVP"), 1, GL_FALSE, glm::value_ptr(MVP));
// glUniformMatrix4fv(glGetUniformLocation(m_ForwardRendering.GetHandle(), "M"), 1, GL_FALSE, glm::value_ptr(modelMatrix));
// glUniformMatrix4fv(glGetUniformLocation(m_ForwardRendering.GetHandle(), "V"), 1, GL_FALSE, glm::value_ptr(m_Camera->ViewMatrix()));
// glUniformMatrix4fv(glGetUniformLocation(m_ForwardRendering.GetHandle(), "P"), 1, GL_FALSE, glm::value_ptr(m_Camera->ProjectionMatrix((float)m_Width / m_Height)));
// glBindVertexArray(model->VAO);
// for (auto texGroup : model->TextureGroups)
// {
// glActiveTexture(GL_TEXTURE0);
// glBindTexture(GL_TEXTURE_2D, *texGroup.Texture);
// glDrawArrays(GL_TRIANGLES, texGroup.StartIndex, texGroup.EndIndex - texGroup.StartIndex + 1);
// }
//}
for (auto &job : rq)
{
//auto modelJob = std::dynamic_pointer_cast<ModelJob>(job);
//if (modelJob)
//{
// glm::mat4 modelMatrix = modelJob->ModelMatrix;
// MVP = cameraMatrix * modelMatrix;
// depthMVP = depthCameraMatrix * modelMatrix;
// glUniformMatrix4fv(glGetUniformLocation(m_FirstPassProgram.GetHandle(), "MVP"), 1, GL_FALSE, glm::value_ptr(MVP));
// glUniformMatrix4fv(glGetUniformLocation(m_FirstPassProgram.GetHandle(), "DepthMVP"), 1, GL_FALSE, glm::value_ptr(depthMVP));
// glUniformMatrix4fv(glGetUniformLocation(m_FirstPassProgram.GetHandle(), "M"), 1, GL_FALSE, glm::value_ptr(modelMatrix));
// glUniformMatrix4fv(glGetUniformLocation(m_FirstPassProgram.GetHandle(), "V"), 1, GL_FALSE, glm::value_ptr(m_Camera->ViewMatrix()));
// glUniformMatrix4fv(glGetUniformLocation(m_FirstPassProgram.GetHandle(), "P"), 1, GL_FALSE, glm::value_ptr(cameraProjection));
// //glUniform3fv(glGetUniformLocation(m_SecondPassProgram.GetHandle(), "SunDirection_cameraspace"), 1, glm::value_ptr(sunDirection_cameraview));
// glBindVertexArray(modelJob->VAO);
// glActiveTexture(GL_TEXTURE0);
// glBindTexture(GL_TEXTURE_2D, modelJob->DiffuseTexture);
// if (modelJob->NormalTexture != 0)
// {
// glActiveTexture(GL_TEXTURE2);
// glBindTexture(GL_TEXTURE_2D, modelJob->NormalTexture);
// }
// if (modelJob->SpecularTexture)
// {
// glActiveTexture(GL_TEXTURE3);
// glBindTexture(GL_TEXTURE_2D, modelJob->SpecularTexture);
// }
// glDrawArrays(GL_TRIANGLES, modelJob->StartIndex, modelJob->EndIndex - modelJob->StartIndex + 1);
// continue;
//}
auto spriteJob = std::dynamic_pointer_cast<SpriteJob>(job);
if (spriteJob)
{
glUniformMatrix4fv(glGetUniformLocation(m_ForwardRendering.GetHandle(), "MVP"), 1, GL_FALSE, glm::value_ptr(glm::mat4()));
glUniformMatrix4fv(glGetUniformLocation(m_ForwardRendering.GetHandle(), "M"), 1, GL_FALSE, glm::value_ptr(glm::mat4()));
glUniformMatrix4fv(glGetUniformLocation(m_ForwardRendering.GetHandle(), "V"), 1, GL_FALSE, glm::value_ptr(glm::mat4()));
glUniformMatrix4fv(glGetUniformLocation(m_ForwardRendering.GetHandle(), "P"), 1, GL_FALSE, glm::value_ptr(glm::mat4()));
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, spriteJob->Texture);
glBindVertexArray(m_ScreenQuad);
glDrawArrays(GL_TRIANGLES, 0, 6);
continue;
}
}
}
void Renderer::DrawWorld(RenderQueue &rq)
{
glDisable(GL_BLEND);
DrawShadowMap(rq);
/*
Base pass
*/
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, m_fbBasePass);
glViewport(m_Viewport.X, -m_Viewport.Y, m_Viewport.Width, m_Viewport.Height);
glScissor(m_Viewport.X, -m_Viewport.Y, m_Viewport.Width, m_Viewport.Height);
//glViewport(0, 0, m_Width, m_Height);
// Clear G-buffer
GLenum windowBuffClear[] = { GL_COLOR_ATTACHMENT0, GL_COLOR_ATTACHMENT1, GL_COLOR_ATTACHMENT2, GL_COLOR_ATTACHMENT3 };
glDrawBuffers(4, windowBuffClear);
glClearColor(115.f / 255, 192.f / 255, 255.f / 255, 0.f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
// Execute the first render stage which will fill out the internal buffers with data(??)
m_FirstPassProgram.Bind();
GLenum windowBuffOpaque[] = { GL_COLOR_ATTACHMENT0, GL_COLOR_ATTACHMENT1, GL_COLOR_ATTACHMENT2, GL_COLOR_ATTACHMENT3 };
glDrawBuffers(4, windowBuffOpaque);
glCullFace(GL_BACK);
glEnable(GL_DEPTH_TEST);
DrawFBOScene(rq);
/*
Lighting pass
*/
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, m_fbLightingPass);
GLenum lightingPassAttachments[] = { GL_COLOR_ATTACHMENT0 };
glDrawBuffers(1, lightingPassAttachments);
glClearColor(0.f, 0.f, 0.f, 0.f);
glClear(GL_COLOR_BUFFER_BIT);
m_SecondPassProgram.Bind();
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, m_fPositionTexture);
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_2D, m_fNormalsTexture);
glActiveTexture(GL_TEXTURE2);
glBindTexture(GL_TEXTURE_2D, m_fSpecularTexture);
glCullFace(GL_FRONT);
DrawLightScene(rq);
DrawSunLightScene();
/*
Final pass
*/
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
//glViewport(m_Viewport.X, m_Viewport.Y, m_Viewport.Width, m_Viewport.Height);
glViewport(0, 0, m_Width, m_Height);
glScissor(0, 0, m_Width, m_Height);
glClear(GL_DEPTH_BUFFER_BIT);
m_FinalPassProgram.Bind();
// Ambient light
glUniform3fv(glGetUniformLocation(m_FinalPassProgram.GetHandle(), "La"), 1, glm::value_ptr(glm::vec3(0.7f)));
glUniform1f(glGetUniformLocation(m_FinalPassProgram.GetHandle(), "Gamma"), Gamma);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, m_fDiffuseTexture);
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_2D, m_fLightingTexture);
glCullFace(GL_BACK);
glBindVertexArray(m_ScreenQuad);
glEnableVertexAttribArray(0);
glDrawArrays(GL_TRIANGLES, 0, 6);
}
void Renderer::Swap()
{
glfwSwapBuffers(m_Window);
}
#pragma region TempRegion
void Renderer::DrawSkybox()
{
//glBindFramebuffer(GL_FRAMEBUFFER, 0);
//glViewport(0, 0, m_Width, m_Height);
//glScissor(0, 0, m_Width, m_Height);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
m_ShaderProgramSkybox.Bind();
glm::mat4 cameraMatrix = m_Camera->ProjectionMatrix((float)m_Width / m_Height) * glm::toMat4(glm::inverse(m_Camera->Orientation()));
glUniformMatrix4fv(glGetUniformLocation(m_ShaderProgramSkybox.GetHandle(), "MVP"), 1, GL_FALSE, glm::value_ptr(cameraMatrix));
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
m_Skybox->Draw();
}
void Renderer::CreateShadowMap(int resolution)
{
glGenFramebuffers(1, &m_ShadowFrameBuffer);
glBindFramebuffer(GL_FRAMEBUFFER, m_ShadowFrameBuffer);
// Depth texture
glGenTextures(1, &m_ShadowDepthTexture);
glBindTexture(GL_TEXTURE_2D, m_ShadowDepthTexture);
glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT16, resolution, resolution, 0, GL_DEPTH_COMPONENT, GL_FLOAT, nullptr);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_BORDER);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_BORDER);
//glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_COMPARE_MODE, GL_NONE );
//glTexParameteri( GL_TEXTURE_2D, GL_DEPTH_TEXTURE_MODE, GL_INTENSITY );
glFramebufferTexture(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, m_ShadowDepthTexture, 0);
glDrawBuffer(GL_NONE);
if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE) {
LOG_ERROR("Framebuffer incomplete!");
return;
}
}
void Renderer::DrawShadowMap(RenderQueue &rq)
{
glEnable(GL_DEPTH_TEST);//Tests where objects are and display them correctly
glEnable(GL_CULL_FACE); //removes triangles on the wrong side of the object
glCullFace(GL_FRONT); //Make it so that only the back faces are rendered
//Binds the FBO and sets the veiwport, witch in effect is how large the shadowmap is and what resolution it has.
glBindFramebuffer(GL_FRAMEBUFFER, m_ShadowFrameBuffer);
glViewport(0, 0, m_ShadowMapRes, m_ShadowMapRes);
glScissor(0, 0, m_ShadowMapRes, m_ShadowMapRes);
glClear(GL_DEPTH_BUFFER_BIT);
//glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
//Creates the "camera" for the shadowmap from the direction of the sun.
glm::mat4 depthViewMatrix = glm::lookAt(m_SunPosition, m_SunTarget, glm::vec3(0, 1, 0)) * glm::translate(m_Camera->Position() * glm::vec3(1, 1, 1));
//glm::mat4 depthViewMatrix = glm::lookAt(m_SunPosition, m_SunTarget, glm::vec3(0, 1, 0)) * glm::translate((-m_Camera->Position() + (glm::vec3(40.0) * -m_Camera->Forward())) * glm::vec3(1, 1, 1));
glm::mat4 depthCamera = m_SunProjection * depthViewMatrix;
glm::mat4 MVP;
m_ShaderProgramShadows.Bind();
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL); //Draws filled polygons
//For each model, render them to the shadowmap
for (auto &job : rq)
{
auto modelJob = std::dynamic_pointer_cast<ModelJob>(job);
if (modelJob)
{
glm::mat4 modelMatrix = modelJob->ModelMatrix;
MVP = depthCamera * modelMatrix;
glUniformMatrix4fv(glGetUniformLocation(m_ShaderProgramShadows.GetHandle(), "MVP"), 1, GL_FALSE, glm::value_ptr(MVP));
//glUniform3fv(glGetUniformLocation(m_SecondPassProgram.GetHandle(), "SunDirection_cameraspace"), 1, glm::value_ptr(sunDirection_cameraview));
glBindVertexArray(modelJob->VAO);
glDrawArrays(GL_TRIANGLES, modelJob->StartIndex, modelJob->EndIndex - modelJob->StartIndex + 1);
continue;
}
}
}
void Renderer::DrawDebugShadowMap()
{
glBindFramebuffer(GL_FRAMEBUFFER, 0);
glViewport(0, 0, 400, 400);
glClear(GL_DEPTH_BUFFER_BIT);
//glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
m_ShaderProgramShadowsDrawDepth.Bind();
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, m_ShadowDepthTexture);
glBindVertexArray(m_ScreenQuad);
glDrawArrays(GL_TRIANGLES, 0, 6);
}
void Renderer::DrawModels(ShaderProgram &shader)
{
/*glm::mat4 cameraMatrix = m_Camera->ProjectionMatrix() * m_Camera->ViewMatrix();
glm::mat4 MVP;
for (auto tuple : ModelsToRender)
{
Model* model;
glm::mat4 modelMatrix;
std::tie(model, modelMatrix) = tuple;
MVP = cameraMatrix * modelMatrix;
glUniformMatrix4fv(glGetUniformLocation(shader.GetHandle(), "MVP"), 1, GL_FALSE, glm::value_ptr(MVP));
glUniformMatrix4fv(glGetUniformLocation(shader.GetHandle(), "model"), 1, GL_FALSE, glm::value_ptr(modelMatrix));
glUniformMatrix4fv(glGetUniformLocation(shader.GetHandle(), "view"), 1, GL_FALSE, glm::value_ptr(m_Camera->ViewMatrix()));
glBindVertexArray(model->VAO);
for (auto texGroup : model->TextureGroups) {
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, texGroup.Texture->texture);
glDrawArrays(GL_TRIANGLES, texGroup.StartIndex, texGroup.EndIndex - texGroup.StartIndex + 1);
}
}*/
}
void Renderer::DrawText()
{
//DrawShitInTextForm
}
void Renderer::AddTextToDraw()
{
//Add to draw shit vector
}
void Renderer::AddModelToDraw(Model* model, glm::vec3 position, glm::quat orientation, glm::vec3 scale, bool visible, bool shadowCaster)
{
glm::mat4 modelMatrix = glm::translate(glm::mat4(), position) * glm::toMat4(orientation) * glm::scale(scale);
// You can now use ModelMatrix to build the MVP matrix
ModelsToRender.push_back(std::make_tuple(model, modelMatrix, visible, shadowCaster));
}
void Renderer::AddTextureToDraw(Texture* texture, glm::vec3 position, glm::quat orientation, glm::vec3 scale)
{
//glm::mat4 modelMatrix = glm::translate(glm::mat4(), position) * glm::toMat4(orientation) * glm::scale(scale);
//glm::vec3 camToParticle = glm::normalize(m_Camera->Position() - position);
//glm::vec3 up = glm::vec3(0,1,0);
//glm::vec3 rightVec = glm::normalize(glm::cross(up, camToParticle));
//glm::vec3 up2 = glm::normalize(glm::cross(camToParticle, rightVec));
//
//glm::mat4 billboardMatrix;
//billboardMatrix[0] = glm::vec4(rightVec, 0);
//billboardMatrix[1] = glm::vec4(up2, 0);
//billboardMatrix[2] = glm::vec4(camToParticle, 0);
////billboardMatrix[3] = glm::vec4(position, 0);
//TexturesToRender.push_back(std::make_tuple(texture, modelMatrix, billboardMatrix));
}
void Renderer::AddPointLightToDraw(
glm::vec3 _position,
glm::vec3 _specular,
glm::vec3 _diffuse,
float _specularExponent,
float _ConstantAttenuation,
float _LinearAttenuation,
float _QuadraticAttenuation,
float _radius
)
{
Light light;
light.Position = _position;
light.Diffuse = _diffuse;
light.Specular = _specular;
light.SpecularExponent = _specularExponent;
light.ConstantAttenuation = _ConstantAttenuation;
light.LinearAttenuation = _LinearAttenuation;
light.QuadraticAttenuation = _QuadraticAttenuation;
light.Radius = _radius;
light.SphereModelMatrix = CreateLightMatrix(light);
Lights.push_back(light);
}
void Renderer::AddAABBToDraw(glm::vec3 origin, glm::vec3 volumeVector, bool colliding)
{
glm::mat4 model;
model *= glm::translate(origin);
model *= glm::scale(volumeVector);
AABBsToRender.push_back(std::make_tuple(model, colliding));
}
GLuint Renderer::CreateQuad()
{
float quadVertices[] =
{
-1.0f, -1.0f, 0.0f,
1.0f, 1.0f, 0.0f,
-1.0f, 1.0f, 0.0f,
-1.0f, -1.0f, 0.0f,
1.0f, -1.0f, 0.0f,
1.0f, 1.0f, 0.0f,
};
float quadTexCoords[] =
{
0.0f, 0.0f,
1.0f, 1.0f,
0.0f, 1.0f,
0.0f, 0.0f,
1.0f, 0.0f,
1.0f, 1.0f,
};
GLuint vbo[2], vao;
glGenBuffers(2, vbo);
glBindBuffer(GL_ARRAY_BUFFER, vbo[0]);
glBufferData(GL_ARRAY_BUFFER, 3 * 6 * sizeof(float), quadVertices, GL_STATIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, vbo[1]);
glBufferData(GL_ARRAY_BUFFER, 2 * 6 * sizeof(float), quadTexCoords, GL_STATIC_DRAW);
glGenVertexArrays(1, &vao);
glBindVertexArray(vao);
glBindBuffer(GL_ARRAY_BUFFER, vbo[0]);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, 0);
glBindBuffer(GL_ARRAY_BUFFER, vbo[1]);
glVertexAttribPointer(2, 2, GL_FLOAT, GL_FALSE, 0, 0);
glEnableVertexAttribArray(0);
glEnableVertexAttribArray(2);
glBindVertexArray(0);
glBindBuffer(GL_ARRAY_BUFFER, 0);
return vao;
}
GLuint Renderer::CreateAABB()
{
float vertices[] =
{
// Bottom
-1.0f, -1.0f, 1.0f, // 0
1.0f, -1.0f, 1.0f, // 1
1.0f, -1.0f, 1.0f, // 1
1.0f, -1.0f, -1.0f, // 2
1.0f, -1.0f, -1.0f, // 2
-1.0f, -1.0f, -1.0f, // 3
-1.0f, -1.0f, -1.0f, // 3
-1.0f, -1.0f, 1.0f, // 0
// Top
-1.0f, 1.0f, 1.0f, // 4
1.0f, 1.0f, 1.0f, // 5
1.0f, 1.0f, 1.0f, // 5
1.0f, 1.0f, -1.0f, // 6
1.0f, 1.0f, -1.0f, // 6
-1.0f, 1.0f, -1.0f, // 7
-1.0f, 1.0f, -1.0f, // 7
-1.0f, 1.0f, 1.0f, // 4
// Connectors
-1.0f, -1.0f, 1.0f, // 0
-1.0f, 1.0f, 1.0f, // 4
1.0f, -1.0f, 1.0f, // 1
1.0f, 1.0f, 1.0f, // 5
1.0f, -1.0f, -1.0f, // 2
1.0f, 1.0f, -1.0f, // 6
-1.0f, -1.0f, -1.0f, // 3
-1.0f, 1.0f, -1.0f, // 7
};
GLuint vbo, vao;
glGenBuffers(1, &vbo);
glBindBuffer(GL_ARRAY_BUFFER, vbo);
glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
glGenVertexArrays(1, &vao);
glBindVertexArray(vao);
glBindBuffer(GL_ARRAY_BUFFER, vbo);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, 0);
glEnableVertexAttribArray(0);
glBindVertexArray(0);
glBindBuffer(GL_ARRAY_BUFFER, 0);
return vao;
}
GLuint Renderer::CreateSkybox()
{
glm::vec3 skyBoxVertices[] =
{
glm::vec3( 1.0f, -1.0f, -1.0f), glm::vec3( 1.0f, -1.0f, 1.0f), glm::vec3( 1.0f, 1.0f, 1.0f), glm::vec3( 1.0f, 1.0f, 1.0f), glm::vec3( 1.0f, 1.0f, -1.0f), glm::vec3( 1.0f, -1.0f, -1.0f),
glm::vec3(-1.0f, -1.0f, 1.0f), glm::vec3(-1.0f, -1.0f, -1.0f), glm::vec3(-1.0f, 1.0f, -1.0f), glm::vec3(-1.0f, 1.0f, -1.0f), glm::vec3(-1.0f, 1.0f, 1.0f), glm::vec3(-1.0f, -1.0f, 1.0f),
glm::vec3(-1.0f, 1.0f, -1.0f), glm::vec3( 1.0f, 1.0f, -1.0f), glm::vec3( 1.0f, 1.0f, 1.0f), glm::vec3( 1.0f, 1.0f, 1.0f), glm::vec3(-1.0f, 1.0f, 1.0f), glm::vec3(-1.0f, 1.0f, -1.0f),
glm::vec3(-1.0f, -1.0f, 1.0f), glm::vec3( 1.0f, -1.0f, 1.0f), glm::vec3( 1.0f, -1.0f, -1.0f), glm::vec3( 1.0f, -1.0f, -1.0f), glm::vec3(-1.0f, -1.0f, -1.0f), glm::vec3(-1.0f, -1.0f, 1.0f),
glm::vec3( 1.0f, -1.0f, 1.0f), glm::vec3(-1.0f, -1.0f, 1.0f), glm::vec3(-1.0f, 1.0f, 1.0f), glm::vec3(-1.0f, 1.0f, 1.0f), glm::vec3( 1.0f, 1.0f, 1.0f), glm::vec3( 1.0f, -1.0f, 1.0f),
glm::vec3(-1.0f, -1.0f, -1.0f), glm::vec3( 1.0f, -1.0f, -1.0f), glm::vec3( 1.0f, 1.0f, -1.0f), glm::vec3( 1.0f, 1.0f, -1.0f), glm::vec3(-1.0f, 1.0f, -1.0f), glm::vec3(-1.0f, -1.0f, -1.0f)
};
GLuint vbo, vao;
glGenBuffers(1, &vbo);
glBindBuffer(GL_ARRAY_BUFFER, vbo);
glBufferData(GL_ARRAY_BUFFER, sizeof(skyBoxVertices), skyBoxVertices, GL_STATIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glGenVertexArrays(1, &vao);
glBindVertexArray(vao);
glBindBuffer(GL_ARRAY_BUFFER, vbo);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, (void*)0);
glEnableVertexAttribArray(0);
glBindVertexArray(0);
return vao;
}
void Renderer::ClearStuff()
{
AABBsToRender.clear();
ModelsToRender.clear();
TexturesToRender.clear();
Lights.clear();
}
#pragma endregion
void Renderer::FrameBufferTextures()
{
m_fbBasePass = 0;
m_fDepthBuffer = 0;
glGenFramebuffers(1, &m_fbBasePass);
glGenRenderbuffers(1, &m_fDepthBuffer);
glBindRenderbuffer(GL_RENDERBUFFER, m_fDepthBuffer);
glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT, m_Width, m_Height);
//Generate and bind diffuse texture
glGenTextures(1, &m_fDiffuseTexture);
glBindTexture(GL_TEXTURE_2D, m_fDiffuseTexture);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA16F, m_Width, m_Height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
//Generate and bind position texture
glGenTextures(1, &m_fPositionTexture);
glBindTexture(GL_TEXTURE_2D, m_fPositionTexture);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB16F, m_Width, m_Height, 0, GL_RGB, GL_UNSIGNED_BYTE, NULL);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
//Generate and bind normal texture
glGenTextures(1, &m_fNormalsTexture);
glBindTexture(GL_TEXTURE_2D, m_fNormalsTexture);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB16F, m_Width, m_Height, 0, GL_RGB, GL_UNSIGNED_BYTE, NULL);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
//Generate and bind normal texture
glGenTextures(1, &m_fSpecularTexture);
glBindTexture(GL_TEXTURE_2D, m_fSpecularTexture);
glTexImage2D(GL_TEXTURE_2D, 0, GL_R8, m_Width, m_Height, 0, GL_RED, GL_UNSIGNED_BYTE, NULL);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
/*glGenTextures(1, &m_fShadowTexture);
glBindTexture(GL_TEXTURE_2D, m_fShadowTexture);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB10_A2, m_Width, m_Height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);*/
//Bind fb
glBindFramebuffer(GL_FRAMEBUFFER, m_fbBasePass);
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, m_fDepthBuffer);
//Attach textures to the FB
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, m_fDiffuseTexture, 0);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT1, GL_TEXTURE_2D, m_fPositionTexture, 0);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT2, GL_TEXTURE_2D, m_fNormalsTexture, 0);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT3, GL_TEXTURE_2D, m_fSpecularTexture, 0);
//glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT3, GL_TEXTURE_2D, m_fShadowTexture, 0);
GLenum fbStatus = glCheckFramebufferStatus(GL_FRAMEBUFFER);
if(fbStatus != GL_FRAMEBUFFER_COMPLETE)
{
LOG_ERROR("DeferredLighting:Init: m_fbBasePass incomplete: 0x%x\n", fbStatus);
//exit(1);
}
m_fbLightingPass = 0;
glGenFramebuffers(1, &m_fbLightingPass);
glGenTextures(1, &m_fLightingTexture);
glBindTexture(GL_TEXTURE_2D, m_fLightingTexture);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA16F, m_Width, m_Height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glBindFramebuffer(GL_FRAMEBUFFER, m_fbLightingPass);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, m_fLightingTexture, 0);
fbStatus = glCheckFramebufferStatus(GL_FRAMEBUFFER);
if(fbStatus != GL_FRAMEBUFFER_COMPLETE)
{
LOG_ERROR("DeferredLighting:Init: m_fbLightingPass incomplete: 0x%x\n", fbStatus);
//exit(1);
}
}
void Renderer::DrawFBO()
{
//DrawShadowMap();
//for (auto &pair : m_Viewports)
//{
// Viewport &viewport = pair.second;
// if (!viewport.Camera)
// continue;
// int x = viewport.Left * m_Width;
// int y = viewport.Top * m_Height;
// int width = (viewport.Right - viewport.Left) * m_Width;
// int height = (viewport.Bottom - viewport.Top) * m_Height;
//
// /*
// Base pass
// */
// glBindFramebuffer(GL_DRAW_FRAMEBUFFER, m_fbBasePass);
// glViewport(0, 0, m_Width, m_Height);
// // Clear G-buffer
// GLenum windowBuffClear[] = { GL_COLOR_ATTACHMENT0, GL_COLOR_ATTACHMENT1, GL_COLOR_ATTACHMENT2, GL_COLOR_ATTACHMENT3 };
// glDrawBuffers(4, windowBuffClear);
// glClearColor(0.0f, 0.3f, 0.7f, 0.f);
// glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
// // Execute the first render stage which will fill out the internal buffers with data(??)
// m_FirstPassProgram.Bind();
// GLenum windowBuffOpaque[] = { GL_COLOR_ATTACHMENT0, GL_COLOR_ATTACHMENT1, GL_COLOR_ATTACHMENT2, GL_COLOR_ATTACHMENT3 };
// glDrawBuffers(4, windowBuffOpaque);
// glCullFace(GL_BACK);
//
// DrawFBOScene(viewport);
// /*
// Lighting pass
// */
// glBindFramebuffer(GL_DRAW_FRAMEBUFFER, m_fbLightingPass);
// GLenum lightingPassAttachments[] = { GL_COLOR_ATTACHMENT0 };
// glDrawBuffers(1, lightingPassAttachments);
// glClearColor(0.f, 0.f, 0.f, 0.f);
// glClear(GL_COLOR_BUFFER_BIT);
// m_SecondPassProgram.Bind();
// glActiveTexture(GL_TEXTURE0);
// glBindTexture(GL_TEXTURE_2D, m_fPositionTexture);
// glActiveTexture(GL_TEXTURE1);
// glBindTexture(GL_TEXTURE_2D, m_fNormalsTexture);
// glActiveTexture(GL_TEXTURE2);
// glBindTexture(GL_TEXTURE_2D, m_fSpecularTexture);
// glCullFace(GL_FRONT);
// DrawLightScene(viewport);
DrawSunLightScene();
// /*
// Final pass
// */
// glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
// glViewport(x, y, width, height);
// glClear(GL_DEPTH_BUFFER_BIT);
// m_FinalPassProgram.Bind();
// // Ambient light
// glUniform3fv(glGetUniformLocation(m_FinalPassProgram.GetHandle(), "La"), 1, glm::value_ptr(glm::vec3(0.7f)));
// glUniform1f(glGetUniformLocation(m_FinalPassProgram.GetHandle(), "Gamma"), Gamma);
// glActiveTexture(GL_TEXTURE0);
// glBindTexture(GL_TEXTURE_2D, m_fDiffuseTexture);
// glActiveTexture(GL_TEXTURE1);
// glBindTexture(GL_TEXTURE_2D, m_fLightingTexture);
// glCullFace(GL_BACK);
// glBindVertexArray(m_ScreenQuad);
// glEnableVertexAttribArray(0);
// glDrawArrays(GL_TRIANGLES, 0, 6);
//}
}
void Renderer::DrawFBO2()
{
ForwardRendering();
}
void Renderer::DrawFBOScene(RenderQueue &rq)
{
// glEnable(GL_DEPTH_TEST);//Tests where objects are and display them correctly
// glEnable(GL_CULL_FACE); //removes triangles on the wrong side of the object
// glCullFace(GL_BACK); //Make it so that only the back faces are rendered
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL); //Draws filled polygons
glm::mat4 cameraProjection = m_Camera->ProjectionMatrix((float)m_Viewport.Width / m_Viewport.Height);
glm::mat4 cameraMatrix = cameraProjection * m_Camera->ViewMatrix();
glm::mat4 MVP;
glm::mat4 biasMatrix(
0.5, 0.0, 0.0, 0.0,
0.0, 0.5, 0.0, 0.0,
0.0, 0.0, 0.5, 0.0,
0.5, 0.5, 0.5, 1.0
);
//glm::mat4 depthViewMatrix = glm::lookAt(m_SunPosition, m_SunTarget, glm::vec3(0, 1, 0)) * glm::translate((-m_Camera->Position() + (glm::vec3(40.0) * -m_Camera->Forward())) * glm::vec3(1, 1, 1));
glm::mat4 depthViewMatrix = glm::lookAt(m_SunPosition, m_SunTarget, glm::vec3(0, 1, 0)) * glm::translate(-m_Camera->Position() * glm::vec3(1, 1, 1));
glm::mat4 depthCamera = m_SunProjection * depthViewMatrix;
glm::mat4 depthCameraMatrix = biasMatrix * depthCamera;
glm::mat4 depthMVP;
glm::vec3 sunDirection = m_SunTarget - m_SunPosition;
glm::vec3 sunDirection_cameraview = glm::vec3(cameraProjection * m_Camera->ViewMatrix() * glm::vec4(sunDirection, 1.0));
m_FirstPassProgram.Bind();
GLuint ShaderProgramHandle = m_FirstPassProgram.GetHandle();
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_2D, m_ShadowDepthTexture);
for (auto &job : rq)
{
auto modelJob = std::dynamic_pointer_cast<ModelJob>(job);
if (modelJob)
{
glm::mat4 modelMatrix = modelJob->ModelMatrix;
MVP = cameraMatrix * modelMatrix;
depthMVP = depthCameraMatrix * modelMatrix;
glUniformMatrix4fv(glGetUniformLocation(ShaderProgramHandle, "MVP"), 1, GL_FALSE, glm::value_ptr(MVP));
glUniformMatrix4fv(glGetUniformLocation(ShaderProgramHandle, "DepthMVP"), 1, GL_FALSE, glm::value_ptr(depthMVP));
glUniformMatrix4fv(glGetUniformLocation(ShaderProgramHandle, "M"), 1, GL_FALSE, glm::value_ptr(modelMatrix));
glUniformMatrix4fv(glGetUniformLocation(ShaderProgramHandle, "V"), 1, GL_FALSE, glm::value_ptr(m_Camera->ViewMatrix()));
glUniformMatrix4fv(glGetUniformLocation(ShaderProgramHandle, "P"), 1, GL_FALSE, glm::value_ptr(cameraProjection));
glUniform3fv(glGetUniformLocation(ShaderProgramHandle, "SunDirection_cameraspace"), 1, glm::value_ptr(sunDirection_cameraview));
glBindVertexArray(modelJob->VAO);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, modelJob->DiffuseTexture);
if (modelJob->NormalTexture != 0)
{
glActiveTexture(GL_TEXTURE2);
glBindTexture(GL_TEXTURE_2D, modelJob->NormalTexture);
}
if (modelJob->SpecularTexture)
{
glActiveTexture(GL_TEXTURE3);
glBindTexture(GL_TEXTURE_2D, modelJob->SpecularTexture);
}
glDrawArrays(GL_TRIANGLES, modelJob->StartIndex, modelJob->EndIndex - modelJob->StartIndex + 1);
continue;
}
//auto spriteJob = std::dynamic_pointer_cast<SpriteJob>(job);
//if (spriteJob)
//{
// Texture* texture;
// glm::mat4 modelMatrix;
// glm::mat4 billboardMatrix;
// std::tie(texture, modelMatrix, billboardMatrix) = tuple;
// //MVP = cameraMatrix * glm::inverse(glm::toMat4(m_Camera->Orientation()) * modelMatrix );
// MVP = cameraMatrix * modelMatrix * billboardMatrix;
// depthMVP = depthCameraMatrix * modelMatrix;
// glUniformMatrix4fv(glGetUniformLocation(m_FirstPassProgram.GetHandle(), "MVP"), 1, GL_FALSE, glm::value_ptr(MVP));
// glUniformMatrix4fv(glGetUniformLocation(m_FirstPassProgram.GetHandle(), "DepthMVP"), 1, GL_FALSE, glm::value_ptr(depthMVP));
// glUniformMatrix4fv(glGetUniformLocation(m_FirstPassProgram.GetHandle(), "M"), 1, GL_FALSE, glm::value_ptr(modelMatrix));
// glUniformMatrix4fv(glGetUniformLocation(m_FirstPassProgram.GetHandle(), "V"), 1, GL_FALSE, glm::value_ptr(m_Camera->ViewMatrix()));
// glUniformMatrix4fv(glGetUniformLocation(m_FirstPassProgram.GetHandle(), "P"), 1, GL_FALSE, glm::value_ptr(m_Camera->ProjectionMatrix((float)m_Width / m_Height)));
// glActiveTexture(GL_TEXTURE0);
// glBindTexture(GL_TEXTURE_2D, *texture);
// glBindVertexArray(m_ScreenQuad);
// glDrawArrays(GL_TRIANGLES, 0, 6);
// continue;
//}
m_BlendMapProgram.Bind();
GLuint ShaderProgramHandle = m_BlendMapProgram.GetHandle();
auto blendMapJob = std::dynamic_pointer_cast<BlendMapModelJob>(job);
if(blendMapJob)
{
glm::mat4 modelMatrix = blendMapJob->ModelMatrix;
MVP = cameraMatrix * modelMatrix;
depthMVP = depthCameraMatrix * modelMatrix;
glUniformMatrix4fv(glGetUniformLocation(ShaderProgramHandle, "MVP"), 1, GL_FALSE, glm::value_ptr(MVP));
glUniformMatrix4fv(glGetUniformLocation(ShaderProgramHandle, "DepthMVP"), 1, GL_FALSE, glm::value_ptr(depthMVP));
glUniformMatrix4fv(glGetUniformLocation(ShaderProgramHandle, "M"), 1, GL_FALSE, glm::value_ptr(modelMatrix));
glUniformMatrix4fv(glGetUniformLocation(ShaderProgramHandle, "V"), 1, GL_FALSE, glm::value_ptr(m_Camera->ViewMatrix()));
glUniformMatrix4fv(glGetUniformLocation(ShaderProgramHandle, "P"), 1, GL_FALSE, glm::value_ptr(cameraProjection));
glUniform3fv(glGetUniformLocation(ShaderProgramHandle, "SunDirection_cameraspace"), 1, glm::value_ptr(sunDirection_cameraview));
glUniform1f(glGetUniformLocation(ShaderProgramHandle, "TextureRepeats"), blendMapJob->TextureRepeat);
glBindVertexArray(blendMapJob->VAO);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, blendMapJob->DiffuseTexture);
if (blendMapJob->NormalTexture != 0)
{
glActiveTexture(GL_TEXTURE2);
glBindTexture(GL_TEXTURE_2D, blendMapJob->NormalTexture);
}
if (blendMapJob->SpecularTexture)
{
glActiveTexture(GL_TEXTURE3);
glBindTexture(GL_TEXTURE_2D, blendMapJob->SpecularTexture);
}
glActiveTexture(GL_TEXTURE4);
glBindTexture(GL_TEXTURE_2D, blendMapJob->BlendMapTextureRed);
glActiveTexture(GL_TEXTURE5);
glBindTexture(GL_TEXTURE_2D, blendMapJob->BlendMapTextureGreen);
glActiveTexture(GL_TEXTURE6);
glBindTexture(GL_TEXTURE_2D, blendMapJob->BlendMapTextureBlue);
glDrawArrays(GL_TRIANGLES, blendMapJob->StartIndex, modelJob->EndIndex - modelJob->StartIndex + 1);
continue;
}
}
}
void Renderer::DrawLightScene(RenderQueue &rq)
{
glEnable(GL_BLEND);
glBlendEquation (GL_FUNC_ADD);
glBlendFunc(GL_ONE,GL_ONE);
glDisable (GL_DEPTH_TEST);
glDepthMask (GL_FALSE);
glBindVertexArray(m_sphereModel->VAO);
glm::mat4 cameraProjection = m_Camera->ProjectionMatrix((float)m_Viewport.Width / m_Viewport.Height);
glm::mat4 cameraMatrix = cameraProjection * m_Camera->ViewMatrix();
glm::mat4 MVP;
glm::vec3 sunDirection = m_SunTarget - m_SunPosition;
m_SecondPassProgram.Bind();
GLuint ShaderProgramHandle = m_SecondPassProgram.GetHandle();
for (auto &light : Lights)
{
MVP = cameraMatrix * light.SphereModelMatrix;
glUniform2fv(glGetUniformLocation(ShaderProgramHandle, "ViewportSize"), 1,glm::value_ptr(glm::vec2(m_Width, m_Height)));
glUniformMatrix4fv(glGetUniformLocation(ShaderProgramHandle, "MVP"), 1, GL_FALSE, glm::value_ptr(MVP));
glUniformMatrix4fv(glGetUniformLocation(ShaderProgramHandle, "V"), 1, GL_FALSE, glm::value_ptr(m_Camera->ViewMatrix()));
glUniformMatrix4fv(glGetUniformLocation(ShaderProgramHandle, "P"), 1, GL_FALSE, glm::value_ptr(cameraProjection));
glUniformMatrix4fv(glGetUniformLocation(ShaderProgramHandle, "M"), 1, GL_FALSE, glm::value_ptr(light.SphereModelMatrix));
glUniform3fv(glGetUniformLocation(ShaderProgramHandle, "ls"), 1, glm::value_ptr(light.Specular));
glUniform3fv(glGetUniformLocation(ShaderProgramHandle, "ld"), 1, glm::value_ptr(light.Diffuse));
glUniform3fv(glGetUniformLocation(ShaderProgramHandle, "lp"), 1, glm::value_ptr(light.Position));
glUniform3f(glGetUniformLocation(ShaderProgramHandle, "CameraPosition"), m_Camera->Position().x, m_Camera->Position().y, m_Camera->Position().z);
glUniform1f(glGetUniformLocation(ShaderProgramHandle, "specularExponent"), light.SpecularExponent);
//glUniform1f(glGetUniformLocation(ShaderProgramHandle, "ConstantAttenuation"), CAtt);
//glUniform1f(glGetUniformLocation(ShaderProgramHandle, "LinearAttenuation"), LAtt);
//glUniform1f(glGetUniformLocation(ShaderProgramHandle, "QuadraticAttenuation"), QAtt);
glUniform1f(glGetUniformLocation(ShaderProgramHandle, "LightRadius"), light.Radius);
glUniform3fv(glGetUniformLocation(ShaderProgramHandle, "directionToSun"), 1, glm::value_ptr(-sunDirection));
glDrawArrays(GL_TRIANGLES, 0, m_sphereModel->Vertices.size());
};
glEnable(GL_DEPTH_TEST);
glDepthMask(GL_TRUE);
glDisable(GL_BLEND);
}
void Renderer::DrawSunLightScene()
{
glCullFace(GL_BACK);
glEnable(GL_BLEND);
glBlendEquation (GL_FUNC_ADD);
glBlendFunc(GL_ONE,GL_ONE);
glDisable (GL_DEPTH_TEST);
glDepthMask (GL_FALSE);
//glBindVertexArray(m_sphereModel->VAO);
glm::mat4 cameraProjection = m_Camera->ProjectionMatrix((float)m_Viewport.Width / m_Viewport.Height);
glm::mat4 cameraMatrix = cameraProjection * m_Camera->ViewMatrix();
glm::mat4 MVP;
m_SunPassProgram.Bind();
GLuint ShaderProgramHandle = m_SunPassProgram.GetHandle();
glUniform2fv(glGetUniformLocation(ShaderProgramHandle, "ViewportSize"), 1, glm::value_ptr(glm::vec2(m_Width, m_Height)));
glUniformMatrix4fv(glGetUniformLocation(ShaderProgramHandle, "MVP"), 1, GL_FALSE, glm::value_ptr(MVP));
glUniformMatrix4fv(glGetUniformLocation(ShaderProgramHandle, "V"), 1, GL_FALSE, glm::value_ptr(m_Camera->ViewMatrix()));
glUniformMatrix4fv(glGetUniformLocation(ShaderProgramHandle, "P"), 1, GL_FALSE, glm::value_ptr(cameraProjection));
glUniform3f(glGetUniformLocation(ShaderProgramHandle, "CameraPosition"), m_Camera->Position().x, m_Camera->Position().y, m_Camera->Position().z);
glUniform3fv(glGetUniformLocation(ShaderProgramHandle, "directionToSun"), 1, glm::value_ptr(glm::normalize(m_SunPosition)));
glBindVertexArray(m_ScreenQuad);
glEnableVertexAttribArray(0);
glDrawArrays(GL_TRIANGLES, 0, 6);
glEnable (GL_DEPTH_TEST);
glDepthMask (GL_TRUE);
glDisable (GL_BLEND);
}
void Renderer::SetSphereModel( Model* _model )
{
m_sphereModel = _model;
}
glm::mat4 Renderer::CreateLightMatrix(Light &_light)
{
// float c = _light.ConstantAttenuation;
// float l = _light.LinearAttenuation;
// float q = _light.QuadraticAttenuation;
//float c = CAtt;
//float l = LAtt;
//float q = QAtt;
//float cutOffRadius = abs(sqrt((-4*c*q) + pow(l, 2) + (1024*q) - l) / (2*q));
glm::mat4 model;
model *= glm::translate(_light.Position);
model *= glm::scale(glm::vec3(_light.Radius*2));
return model;
}
void Renderer::UpdateSunProjection()
{
glm::vec3 NDCCube[] =
{
glm::vec3(-1.f, -1.f, -1.f),
glm::vec3(1.f, -1.f, -1.f),
glm::vec3(-1.f, 1.f, -1.f),
glm::vec3(1.f, 1.f, -1.f),
glm::vec3(-1.f, -1.f, 1.f),
glm::vec3(1.f, -1.f, 1.f),
glm::vec3(-1.f, 1.f, 1.f),
glm::vec3(1.f, 1.f, 1.f)
};
glm::mat4 inverseProjectionViewMatrix = glm::inverse(m_Camera->ViewMatrix()) * glm::inverse(m_Camera->ProjectionMatrix((float)m_Width / m_Height));
//Also * with world matrix for light
for(auto corner : NDCCube)
{
//corner *= inverseProjectionViewMatrix;
}
//Calculate the bounding box of the transformed frustum corners. This will be the view frustum for the shadow map.
//Pass the bounding box's extents to glOrtho or similar to set up the orthographic projection matrix for the shadow map.
}
void Renderer::ForwardRendering()
{
glBindFramebuffer(GL_FRAMEBUFFER, 0);
glViewport(0, 0, m_Width, m_Height);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glClearColor(0.0f, 0.5f, 0.0f, 1.0f);
glEnable(GL_DEPTH_TEST);
glEnable(GL_CULL_FACE);
glCullFace(GL_BACK);
glm::mat4 cameraMatrix = m_Camera->ProjectionMatrix((float)m_Width / m_Height) * m_Camera->ViewMatrix();
glm::mat4 MVP;
m_ForwardRendering.Bind();
GLuint ShaderProgramHandle = m_ForwardRendering.GetHandle();
for (auto tuple : ModelsToRender) //// Todo: Add so it's TransparentModelsToRender
{
Model* model;
glm::mat4 modelMatrix;
bool visible;
std::tie(model, modelMatrix, visible, std::ignore) = tuple;
if (!visible)
continue;
MVP = cameraMatrix * modelMatrix;
glUniformMatrix4fv(glGetUniformLocation(ShaderProgramHandle, "MVP"), 1, GL_FALSE, glm::value_ptr(MVP));
glUniformMatrix4fv(glGetUniformLocation(ShaderProgramHandle, "M"), 1, GL_FALSE, glm::value_ptr(modelMatrix));
glUniformMatrix4fv(glGetUniformLocation(ShaderProgramHandle, "V"), 1, GL_FALSE, glm::value_ptr(m_Camera->ViewMatrix()));
glUniformMatrix4fv(glGetUniformLocation(ShaderProgramHandle, "P"), 1, GL_FALSE, glm::value_ptr(m_Camera->ProjectionMatrix((float)m_Width / m_Height)));
glBindVertexArray(model->VAO);
for (auto texGroup : model->TextureGroups)
{
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, *texGroup.Texture);
glDrawArrays(GL_TRIANGLES, texGroup.StartIndex, texGroup.EndIndex - texGroup.StartIndex + 1);
}
}
}
void Renderer::RegisterCamera(int identifier, float FOV, float nearClip, float farClip)
{
m_Cameras[identifier] = std::make_shared<Camera>(FOV, nearClip, farClip);
}
void Renderer::UpdateViewport(int viewportIdentifier, int cameraIdentifier)
{
//auto &viewport = m_Viewports[viewportIdentifier];
//auto camera = m_Cameras[cameraIdentifier];
//camera->AspectRatio(((viewport.Right - viewport.Left) * m_Width) / ((viewport.Bottom - viewport.Top) * m_Height));
//viewport.Camera = camera;
}
void Renderer::UpdateCamera(int cameraIdentifier, glm::vec3 position, glm::quat orientation, float FOV, float nearClip, float farClip)
{
/*m_Cameras[cameraIdentifier]->Position(position);
m_Cameras[cameraIdentifier]->Orientation(orientation);
m_Cameras[cameraIdentifier]->FOV(FOV);
m_Cameras[cameraIdentifier]->NearClip(nearClip);
m_Cameras[cameraIdentifier]->FarClip(farClip);*/
}
void Renderer::ClearPointLights()
{
Lights.clear();
}
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