Shadow WIP

- DepthTexture working

include/Engine/Rendering/ShadowPass.h

@@ -7,6 +7,7 @@
 #include "../Core/EventBroker.h"
 #include "../Core/World.h"
 #include "ShadowPassState.h"
+#include "imgui/imgui.h"
 
 //#include "ShadowPassState.h" // not created yet
 
@@ -45,6 +46,14 @@ private:
 
     GLuint m_DepthFBO;
 
+    GLfloat m_NearPlane = -40.f;
+    GLfloat m_FarPlane = 80.f;
+    //GLfloat m_Left = -10.f;
+    //GLfloat m_Right = 10.f;
+    //GLfloat m_Bottom = -10.f;
+    //GLfloat m_Top = 10.f;
+    GLfloat m_LRBT[4] = { -40.f, 100.f, -50.f, 50.f };
+
 };
 
 #endif

resources/Shaders/Shadow.frag.glsl

@@ -2,9 +2,9 @@
 
 
 
-in VertexData{
-	vec3 Position;
-}Input;
+//in VertexData{
+//	vec3 Position;
+//}Input;
 
 //layout(location = 0 ) out vec4 ShadowMap;
 layout(location = 0 ) out float ShadowMap;
@@ -12,7 +12,7 @@ layout(location = 0 ) out float ShadowMap;
 void main()
 {
 	//ShadowMap = vec4(vec3(gl_FragCoord.z), 1.0);
-	ShadowMap = (gl_FragCoord.z);
+	//ShadowMap = (gl_FragCoord.z);
 }
 
 

resources/Shaders/Shadow.vert.glsl

@@ -6,12 +6,12 @@ uniform mat4 P;
 
 layout(location = 0) in vec3 Position;
 
-out VertexData{
-	vec3 Position;
-}Output;
+//out VertexData{
+//	vec3 Position;
+//}Output;
 
 void main()
 {	
-	Output.Position = Position;
+//	Output.Position = Position;
 	gl_Position = P * V * M * vec4(Position, 1.0);
 }

src/Engine/Rendering/ShadowPass.cpp

@@ -26,15 +26,15 @@ void ShadowPass::InitializeFrameBuffers()
     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);
+    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.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");
@@ -70,16 +70,16 @@ void ShadowPass::Draw(RenderScene & scene)
     //    glClear(GL_COLOR_BUFFER_BIT);
     //}
 
+    ImGui::DragFloat4("ShadowMapCam", m_LRBT, 1.f, -1000.f, 1000.f);
+
     for (auto &job : scene.DirectionalLightJobs) {
         auto directionalLightJob = std::dynamic_pointer_cast<DirectionalLightJob>(job);
         
         if(directionalLightJob) {
-  
-            GLfloat near_plane = 1.0f, far_plane = 75.5f;
-            glm::mat4 lightProjection = glm::ortho(-10.0f, 10.0f, -10.0f, 10.0f, near_plane, far_plane);
+            glm::mat4 lightProjection = glm::ortho(m_LRBT[0], m_LRBT[1], m_LRBT[2], m_LRBT[3], m_NearPlane, m_FarPlane);
 
             // broken?
-            glm::mat4 lightView = glm::lookAt(-glm::normalize(glm::vec3(directionalLightJob->Direction)) * (float)50.0 , glm::vec3(0,0,0), glm::vec3(0,1,0));
+            glm::mat4 lightView = glm::lookAt(-glm::normalize(glm::vec3(directionalLightJob->Direction)) * (float)20.0 , glm::vec3(0,0,0), glm::vec3(0,1,0));
             //glm::mat4 lightView = glm::lookAt(glm::vec3(10.f, 10.f, 50.f), glm::vec3(0.f, 0.f, 0.f), glm::vec3(0.f, 1.f, 0.f));
             //glm::mat4 lightSpaceMatrix = lightProjection * lightView;