add skybox, move assets

CMakeLists.txt

@@ -8,8 +8,8 @@ if(CMAKE_BUILD_TYPE MATCHES DEBUG)
 	set(CMAKE_CXX_FLAGS "-Wall ${CMAKE_CXX_FLAGS}")
 endif()
 
-SET(CMAKE_C_FLAGS_RELEASE "-Ofast -msse4 -DNDEBUG")
-SET(CMAKE_CXX_FLAGS_RELEASE "-Ofast -msse4 -DNDEBUG")
+SET(CMAKE_C_FLAGS_RELEASE "-Ofast -msse4 -msse2 -DNDEBUG")
+SET(CMAKE_CXX_FLAGS_RELEASE "-Ofast -msse4 -msse2 -DNDEBUG")
 
 if(CMAKE_BUILD_TYPE MATCHES RELEASE)
 	set(CMAKE_FIND_LIBRARY_SUFFIXES ".a")

assets/shader/skybox.fragment.glsl

@@ -0,0 +1,12 @@
+#version 330
+
+in vec3 TexCoord0;
+
+out vec4 color;
+
+uniform samplerCube tCubemap;
+
+void main()
+{
+    color = texture(tCubemap, TexCoord0);
+}

assets/shader/skybox.vertex.glsl

@@ -0,0 +1,14 @@
+#version 330
+
+in vec3 vPosition;
+
+uniform mat4 MVP;
+
+out vec3 TexCoord0;
+
+void main()
+{
+    vec4 WVP_Pos = MVP * vec4(vPosition, 1.0);
+    gl_Position = WVP_Pos.xyww;
+    TexCoord0 = vPosition;
+}

assets/shader/standard.fragment.glsl

@@ -20,7 +20,7 @@ void main(){
 	// Light emission properties
 	// You probably want to put them as uniforms
 	vec3 LightColor = vec3(1,1,1);
-	float LightPower = 400.0f;
+	float LightPower = 200.0f;
 	
 	// Material properties
 	vec3 MaterialDiffuseColor = texture( tAlbedo, UV ).rgb;

shader/skybox.fragment.glsl

@@ -1,12 +0,0 @@
-#version 330
-
-in vec3 TexCoord0;
-
-out vec4 FragColor;
-
-uniform samplerCube gCubemapTexture;
-
-void main()
-{
-    FragColor = texture(gCubemapTexture, TexCoord0);
-}

shader/skybox.vertex.glsl

@@ -1,14 +0,0 @@
-#version 330
-
-in vec3 Position;
-
-uniform mat4 gWVP;
-
-out vec3 TexCoord0;
-
-void main()
-{
-    vec4 WVP_Pos = gWVP * vec4(Position, 1.0);
-    gl_Position = WVP_Pos.xyww;
-    TexCoord0 = Position;
-}

src/Application.cpp

@@ -126,8 +126,10 @@ void Application::init() {
 
 	loadShader();
 	glMesh.create();
-	glMesh.update(vPositionLoc, vNormalLoc, vTexCoordLoc);
+	glMesh.update(programId);
 	generateAsteroid();
+
+	skybox.Load("background");
 }
 
 void Application::shutdown() {
@@ -214,7 +216,7 @@ void Application::generateAsteroid() {
 	}
 
 	if (meshProgress.begin("Generate Patched", 1)) {
-		mesh = polygonizer.mesh.createPatched(0.9);
+		mesh = polygonizer.mesh.createPatched(0.8);
 	}
 
 	if (meshProgress.begin("Save Patched", 1)) {
@@ -253,10 +255,6 @@ void Application::loadShader() {
 	GLCK(
 			LightPosition_worldspaceloc = glGetUniformLocation(programId, "LightPosition_worldspace"))
 
-	GLCK(vPositionLoc = glGetAttribLocation(programId, "vPosition"))
-	GLCK(vTexCoordLoc = glGetAttribLocation(programId, "vTexCoord"))
-	GLCK(vNormalLoc = glGetAttribLocation(programId, "vNormal"))
-
 	GLCK(tAlbedoLoc = glGetAttribLocation(programId, "tAlbedo"))
 	GLCK(tNormalLoc = glGetAttribLocation(programId, "tNormal"))
 	GLCK(tRoughnessLoc = glGetAttribLocation(programId, "tRoughness"))
@@ -281,9 +279,7 @@ void Application::renderMesh() {
 	glMesh.render();
 }
 
-void Application::prepareShader() {
-	glm::mat4 view;
-
+void Application::updateMatrices() {
 	double mouseX, mouseY;
 	glfwGetCursorPos(window, &mouseX, &mouseY);
 
@@ -333,10 +329,12 @@ void Application::prepareShader() {
 	lastMouseX = mouseX;
 	lastMouseY = mouseY;
 
-	glm::mat4 perspective = glm::perspective(glm::radians(45.0f),
+	perspective = glm::perspective(glm::radians(45.0f),
 			(float) width / (float) height, 0.1f, 100.0f);
-	glm::mat4 mvp = perspective * view * modelTrafo;
+	mvp = perspective * view * modelTrafo;
+}
 
+void Application::prepareShader() {
 	GLCK(glUseProgram(programId))
 	if (MVPloc >= 0) {
 		GLCK(glUniformMatrix4fv(MVPloc, 1, GL_FALSE, glm::value_ptr(mvp)))
@@ -421,7 +419,7 @@ void Application::gui() {
 	ImGui::Begin("Rendering");
 	if (ImGui::Button("Reload Shader")) {
 		loadShader();
-		glMesh.update(vPositionLoc, vNormalLoc, vTexCoordLoc);
+		glMesh.update(programId);
 	}
 	if (ImGui::Button("Wireframe"))
 		glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
@@ -458,9 +456,10 @@ void Application::run() {
 			uploadTexture();
 			textureUploadRequest = false;
 		}
+		updateMatrices();
 		prepareShader();
 		renderMesh();
-
+		skybox.Render(mvp);
 		ImGui::Render();
 		glfwSwapBuffers(window);
 

src/Application.h

@@ -4,6 +4,7 @@
 #include "Polygoniser.h"
 #include "TextureMapper.h"
 #include "ProgressMonitor.h"
+#include "SkyBox.h"
 #include "gl.h"
 
 #include <glm/mat4x4.hpp>
@@ -54,6 +55,11 @@ class Application {
 	bool meshUploadRequest, textureUploadRequest;
 
 	void toogleFpsMode();
+
+	glm::mat4 perspective, view, mvp;
+
+	SkyBox skybox;
+
 public:
 	Application();
 
@@ -86,6 +92,7 @@ public:
 
 	void renderMesh();
 
+	void updateMatrices();
 	void prepareShader();
 
 	void gui();

src/Mesh.cpp

@@ -310,7 +310,6 @@ Mesh Mesh::createPatched(float threshold) const {
 			}
 			mesh.indices.push_back(idx);
 		}
-		printf("\n");
 	}
 	return mesh;
 }

src/Shader.cpp

@@ -15,7 +15,7 @@ GLuint loadProgram(const string &name) {
 
 	// Read the Vertex Shader code from the file
 	string VertexShaderCode;
-	string vertex_file_path = "shader/" + name + ".vertex.glsl";
+	string vertex_file_path = "assets/shader/" + name + ".vertex.glsl";
 	ifstream VertexShaderStream(vertex_file_path, ios::in);
 	if (VertexShaderStream.is_open()) {
 		string Line = "";
@@ -29,7 +29,7 @@ GLuint loadProgram(const string &name) {
 
 	// Read the Fragment Shader code from the file
 	string FragmentShaderCode;
-	string fragment_file_path = "shader/" + name + ".fragment.glsl";
+	string fragment_file_path = "assets/shader/" + name + ".fragment.glsl";
 	ifstream FragmentShaderStream(fragment_file_path, ios::in);
 	if (FragmentShaderStream.is_open()) {
 		string Line = "";

src/SkyBox.cpp

@@ -3,12 +3,13 @@
 
 #include <glad/glad.h>
 #include <stb_image.h>
+#include <glm/gtc/type_ptr.hpp>
 
 using namespace std;
 
 SkyBox::SkyBox() :
-		textureId(GL_INVALID_INDEX), programId(GL_INVALID_INDEX) {
-	glGenTextures(1, &textureId);
+		textureId(GL_INVALID_INDEX), programId(GL_INVALID_INDEX), textureLoc(-1) {
+
 }
 
 SkyBox::~SkyBox() {
@@ -16,25 +17,70 @@ SkyBox::~SkyBox() {
 }
 
 bool SkyBox::Load(const std::string basename) {
+	glGenTextures(1, &textureId);
+
+	float extent = 10;
+	mesh.positions.clear();
+	mesh.positions.push_back(glm::vec3(-extent, -extent, -extent));
+	mesh.positions.push_back(glm::vec3(-extent, -extent, extent));
+	mesh.positions.push_back(glm::vec3(extent, -extent, extent));
+	mesh.positions.push_back(glm::vec3(extent, -extent, -extent));
+
+	mesh.positions.push_back(glm::vec3(-extent, extent, -extent));
+	mesh.positions.push_back(glm::vec3(-extent, extent, extent));
+	mesh.positions.push_back(glm::vec3(extent, extent, extent));
+	mesh.positions.push_back(glm::vec3(extent, extent, -extent));
+
+	mesh.indices.clear();
+	// bottom
+	mesh.indices.push_back(glm::uvec3(1, 0, 2));
+	mesh.indices.push_back(glm::uvec3(2, 0, 3));
+	// back
+	mesh.indices.push_back(glm::uvec3(5, 2, 6));
+	mesh.indices.push_back(glm::uvec3(1, 2, 5));
+	// front
+	mesh.indices.push_back(glm::uvec3(3, 4, 7));
+	mesh.indices.push_back(glm::uvec3(3, 0, 4));
+	// left
+	mesh.indices.push_back(glm::uvec3(6, 3, 7));
+	mesh.indices.push_back(glm::uvec3(2, 3, 6));
+	// right
+	mesh.indices.push_back(glm::uvec3(0, 1, 4));
+	mesh.indices.push_back(glm::uvec3(4, 1, 5));
+	// top
+	mesh.indices.push_back(glm::uvec3(5, 6, 4));
+	mesh.indices.push_back(glm::uvec3(6, 7, 4));
+
+
+
 	glBindTexture(GL_TEXTURE_CUBE_MAP, textureId);
 
-	Load(GL_TEXTURE_CUBE_MAP_POSITIVE_X, basename + "_right1.png");
-	Load(GL_TEXTURE_CUBE_MAP_NEGATIVE_X, basename + "_left2.png");
-	Load(GL_TEXTURE_CUBE_MAP_POSITIVE_Y, basename + "_top3.png");
-	Load(GL_TEXTURE_CUBE_MAP_NEGATIVE_Y, basename + "_bottom4.png");
-	Load(GL_TEXTURE_CUBE_MAP_POSITIVE_Z, basename + "_front5.png");
-	Load(GL_TEXTURE_CUBE_MAP_NEGATIVE_Z, basename + "_back6.png");
+	Load(GL_TEXTURE_CUBE_MAP_POSITIVE_X, "assets/textures/" + basename + "_right1.jpg");
+	Load(GL_TEXTURE_CUBE_MAP_NEGATIVE_X, "assets/textures/" + basename + "_left2.jpg");
+	Load(GL_TEXTURE_CUBE_MAP_POSITIVE_Y, "assets/textures/" + basename + "_top3.jpg");
+	Load(GL_TEXTURE_CUBE_MAP_NEGATIVE_Y, "assets/textures/" + basename + "_bottom4.jpg");
+	Load(GL_TEXTURE_CUBE_MAP_POSITIVE_Z, "assets/textures/" + basename + "_front5.jpg");
+	Load(GL_TEXTURE_CUBE_MAP_NEGATIVE_Z, "assets/textures/" + basename + "_back6.jpg");
 
 	programId = loadProgram("skybox");
 
+	GLCK(textureLoc = glGetAttribLocation(programId, "tCubemap"))
+	GLCK(MVPloc = glGetUniformLocation(programId, "MVP"))
+
+	glMesh.create();
+	glMesh.update(programId);
+	glMesh.upload(mesh);
+
 	return true;
 }
 
 bool SkyBox::Load(GLuint target, const std::string filename) {
 	int x, y, comp;
-	unsigned char *data = stbi_load(filename.c_str(), &x, &y, &comp, 4);
+	printf ("start\n");
+	unsigned char *data = stbi_load(filename.c_str(), &x, &y, &comp, 0);
+	printf ("end\n");
 
-	glTexImage2D(target, 0, GL_RGBA, x, y, 0, GL_RGBA, GL_UNSIGNED_BYTE, data);
+	glTexImage2D(target, 0, GL_RGB, x, y, 0, GL_RGB, GL_UNSIGNED_BYTE, data);
 	glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 	glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 	glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_S,
@@ -48,7 +94,7 @@ bool SkyBox::Load(GLuint target, const std::string filename) {
 	return true;
 }
 
-void SkyBox::Render() {
+void SkyBox::Render(glm::mat4 mvp) {
 	GLint OldCullFaceMode;
 	glGetIntegerv(GL_CULL_FACE_MODE, &OldCullFaceMode);
 	GLint OldDepthFuncMode;
@@ -67,13 +113,17 @@ void SkyBox::Render() {
 	 p.SetPerspectiveProj(m_persProjInfo);
 	 m_pSkyboxTechnique->SetWVP(p.GetWVPTrans());
 	 m_pCubemapTex->Bind(GL_TEXTURE0);
-	 m_pMesh->Render();
 	 */
+
+	GLCK(glUseProgram(programId));
+	mvp[3] = glm::vec4(0, 0, 0, 1);
+	GLCK(glUniformMatrix4fv(MVPloc, 1, GL_FALSE, glm::value_ptr(mvp)))
+
+	GLCK(glUniform1i(textureLoc, 0))
+	GLCK(glActiveTexture(GL_TEXTURE0))
+	GLCK(glBindTexture(GL_TEXTURE_CUBE_MAP, textureId))
+
+	glMesh.render();
 	glCullFace(OldCullFaceMode);
 	glDepthFunc(OldDepthFuncMode);
 }
-
-void SkyBox::Bind(GLenum unit) {
-	glActiveTexture(unit);
-	glBindTexture(GL_TEXTURE_CUBE_MAP, textureId);
-}

src/SkyBox.h

@@ -1,9 +1,13 @@
 #pragma once
 
-#include <glad/glad.h>
+#include "gl.h"
+#include "Mesh.h"
+
+#include <glm/mat4x4.hpp>
 
 #include <string>
 
+
 class SkyBox {
 public:
 
@@ -14,11 +18,13 @@ public:
 	bool Load(const std::string basename);
 	bool Load(GLuint target, const std::string filename);
 
-	void Bind(GLenum TextureUnit);
+	void Render(glm::mat4 mvp);
 
-	void Render();
 private:
 
 	std::string fileNames[6];
 	GLuint textureId, programId;
+	GLint textureLoc, MVPloc;
+	Mesh mesh;
+	GLMesh glMesh;
 };

src/gl.h

@@ -3,6 +3,7 @@
 #include <glad/glad.h>
 #include <GLFW/glfw3.h>
 
+#include "Mesh.h"
 #include "types.h"
 
 static bool glck(const char* call) {
@@ -93,7 +94,7 @@ public:
 
 	bool bindVertexAttrib(GLuint id, GLint loc, GLuint size) const {
 		if (loc < 0) {
-			GLCK(glDisableVertexAttribArray(loc))
+			return false;
 		} else {
 			GLCK(glBindBuffer(GL_ARRAY_BUFFER, id))
 			GLCK(glEnableVertexAttribArray(loc))
@@ -104,11 +105,17 @@ public:
 					0,// stride
 					(void* ) 0// array buffer offset
 					))
-		}
 			return true;
 		}
 
-	void update(int vPositionLoc, int vNormalLoc, int vTexCoordLoc) const {
+	}
+
+	void update(int programId) const {
+		int vPositionLoc, vNormalLoc, vTexCoordLoc;
+		GLCK(vPositionLoc = glGetAttribLocation(programId, "vPosition"))
+		GLCK(vTexCoordLoc = glGetAttribLocation(programId, "vTexCoord"))
+		GLCK(vNormalLoc = glGetAttribLocation(programId, "vNormal"))
+
 		GLCK(glBindVertexArray(vertexArrayId))
 
 		bindVertexAttrib(vPositionId, vPositionLoc, 3);