Do ex2
This commit is contained in:
parent
101792b011
commit
9378c685a8
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@ -32,3 +32,5 @@
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*.app
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build/
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res/textures/*.png
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@ -2,6 +2,20 @@
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in layout(location = 0) vec3 normal;
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in layout(location = 1) vec3 vertex;
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in layout(location = 2) vec2 UV;
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in layout(location = 3) mat3 TBN;
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layout(binding = 0) uniform sampler2D diffuseTexture;
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layout(binding = 1) uniform sampler2D normalTexture;
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uniform bool isIlluminated;
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uniform bool isTextured;
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uniform bool isNormalMapped;
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uniform bool isInverted;
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uniform layout(location = 6) mat4 MVP;
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uniform layout(location = 7) mat4 MV;
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uniform layout(location = 8) mat4 MVnormal;
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// point lights
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struct Light {
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@ -11,6 +25,7 @@ struct Light {
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vec3 spot_target; // MV space coordinates
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};
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//named
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#define N_LIGHTS 3
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uniform Light light[N_LIGHTS];
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@ -23,18 +38,24 @@ vec3 c_diffuse = vec3(0.75390625, 0.4296875, 0.4375);
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vec3 c_emissive = vec3(0.01171875, 0.0, 0.15234375);
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vec3 c_specular = vec3(0.9453125, 0.94921875, 0.84765625);
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float spot_cuttof_angle = cos(4 / 180.0 * 3.1415926535);
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float spot_cuttof_angle = cos(1.5 / 180.0 * 3.1415926535);
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void main()
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{
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vec3 nnormal = normalize(normal);
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void main_(vec4 basecolor) {
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vec3 nnormal;
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if (isNormalMapped) {
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vec3 tangential = texture(normalTexture, UV).rgb * 2.0 - 1.0;
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nnormal = TBN * -normalize(tangential);
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} else {
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nnormal = normalize(normal);
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}
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float diffuse_intensity = 0.0;
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float specular_intensity = 0.0;
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for (int i = 0; i<3; i++) {
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vec3 L = vec3(light[i].MV * vec4(light[i].position, 1.0f)) - vertex;
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float attenuation = clamp(1000/(1 + 40*length(L) + 0.1*length(L)*length(L)), 0.0, 1.25);
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float l = length(L);
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float attenuation = clamp(2000/(1 + 1*l + 0.1*l*l), 0.0, 1.25);
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L = normalize(L);
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if (light[i].is_spot) {
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@ -42,7 +63,7 @@ void main()
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if (dot(L2, L) < spot_cuttof_angle) {
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continue;
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}
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attenuation *= 70;
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attenuation *= 30;
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}
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float diffuse_i = dot(nnormal, L);
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@ -61,7 +82,30 @@ void main()
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//float intensity = dot(normalize(normal), normalize(light_pos_2));
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//color = vec4(0.5 * normal + 0.5, 1.0);
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color = vec4(c_emissive
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+ c_diffuse*diffuse_intensity
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+ c_specular*specular_intensity, 1.0f);
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color = basecolor * vec4(c_emissive
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+ c_diffuse*diffuse_intensity, 1.0f)
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+ vec4(c_specular*specular_intensity, 1.0f);
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}
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void main() {
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if(isIlluminated) {
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if (isTextured) {
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c_diffuse = vec3(0.9);
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c_emissive = vec3(0.2);
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main_(texture(diffuseTexture, UV));
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} else {
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main_(vec4(1.0));
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}
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} else {
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color = texture(diffuseTexture, UV);
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}
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if (isInverted) {
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color.r = 1 - color.r;
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color.g = 1 - color.g;
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color.b = 1 - color.b;
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}
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}
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@ -2,18 +2,33 @@
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in layout(location = 0) vec3 position;
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in layout(location = 1) vec3 normal_in;
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in layout(location = 2) vec2 UV;
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in layout(location = 3) vec3 tangent;
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in layout(location = 4) vec3 bitangent;
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uniform layout(location = 3) mat4 MVP;
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uniform layout(location = 4) mat4 MV;
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uniform layout(location = 5) mat4 MVnormal;
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uniform layout(location = 6) mat4 MVP;
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uniform layout(location = 7) mat4 MV;
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uniform layout(location = 8) mat4 MVnormal;
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//named
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uniform bool isIlluminated;
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uniform bool isTextured;
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uniform bool isNormalMapped;
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out layout(location = 0) vec3 normal_out;
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out layout(location = 1) vec3 vertex_out;
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out layout(location = 2) vec2 uv_out;
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out layout(location = 3) mat3 TBN;
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void main() {
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TBN = mat3(
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normalize(vec3(MV * vec4(tangent, 0.0))),
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normalize(vec3(MV * vec4(bitangent, 0.0))),
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normalize(vec3(MV * vec4(normal_in, 0.0)))
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);
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void main()
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{
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normal_out = normalize(vec3(MVnormal * vec4(normal_in, 1.0f)));
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vertex_out = vec3(MV*vec4(position, 1.0f));
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uv_out = UV;
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gl_Position = MVP * vec4(position, 1.0f);
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}
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@ -9,6 +9,8 @@
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#include <utilities/mesh.h>
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#include <utilities/shapes.h>
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#include <utilities/glutils.h>
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#include <utilities/glfont.h>
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#include <utilities/imageLoader.hpp>
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#include <SFML/Audio/Sound.hpp>
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#include <glm/gtc/matrix_transform.hpp>
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#include <glm/gtc/type_ptr.hpp>
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@ -33,6 +35,8 @@ SceneNode* rootNode;
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SceneNode* boxNode;
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SceneNode* ballNode;
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SceneNode* padNode;
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SceneNode* hudNode;
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SceneNode* textNode;
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SceneNode* lightNode[3];
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@ -61,7 +65,11 @@ bool jumpedToNextFrame = false;
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const float debug_startTime = 45;
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double totalElapsedTime = debug_startTime;
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// textures
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PNGImage t_charmap;
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PNGImage t_cobble_diff;
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PNGImage t_cobble_normal;
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void mouseCallback(GLFWwindow* window, double x, double y) {
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int windowWidth, windowHeight;
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@ -107,20 +115,37 @@ void initGame(GLFWwindow* window, CommandLineOptions gameOptions) {
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Mesh sphere = generateSphere(1.0, 40, 40);
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unsigned int ballVAO = generateBuffer(sphere);
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unsigned int boxVAO = generateBuffer(box);
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unsigned int boxVAO = generateBuffer(box, true);
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unsigned int padVAO = generateBuffer(pad);
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// textures
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t_charmap = loadPNGFile("../res/textures/charmap.png");
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t_cobble_diff = loadPNGFile("../res/textures/cobble_diff.png");
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t_cobble_normal = loadPNGFile("../res/textures/cobble_normal.png");
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unsigned int t_charmapID = generateTexture(t_charmap);
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unsigned int t_cobble_diffID = generateTexture(t_cobble_diff);
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unsigned int t_cobble_normalID = generateTexture(t_cobble_normal);
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rootNode = createSceneNode();
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boxNode = createSceneNode() ;
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boxNode = createSceneNode(NORMAL_TEXTURED_GEOMETRY);
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padNode = createSceneNode();
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ballNode = createSceneNode();
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hudNode = createSceneNode(HUD);
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textNode = createSceneNode(TEXTURED_GEOMETRY);
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rootNode->children.push_back(boxNode);
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rootNode->children.push_back(padNode);
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rootNode->children.push_back(ballNode);
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rootNode->children.push_back(hudNode);
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hudNode->children.push_back(textNode);
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//rootNode->children.push_back(textNode);
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boxNode->vertexArrayObjectID = boxVAO;
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boxNode->VAOIndexCount = box.indices.size();
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boxNode->diffuseTextureID = t_cobble_diffID;
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boxNode->normalTextureID = t_cobble_normalID;
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padNode->vertexArrayObjectID = padVAO;
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padNode->VAOIndexCount = pad.indices.size();
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@ -138,12 +163,24 @@ void initGame(GLFWwindow* window, CommandLineOptions gameOptions) {
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rootNode->children.push_back(lightNode[1]);
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ballNode->children.push_back(lightNode[2]);
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lightNode[0]->position = {boxDimensions.x/2 - 10, boxDimensions.y/2 - 10, boxDimensions.z/2 - 10};
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lightNode[1]->position = {300,300,400};
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lightNode[1]->position = {-300, -500, 300};
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lightNode[2]->position = {0, 0, 0};
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lightNode[1]->nodeType = SPOT_LIGHT;
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padNode->targeted_by = lightNode[1];
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// hud
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Mesh hello_world = generateTextGeometryBuffer("Skjer'a bagera?", 1.3, 2);
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textNode->position = glm::vec3(-1.0, 0.0, 0.0);
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textNode->rotation = glm::vec3(0.0, 0.0, 0.0);
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textNode->vertexArrayObjectID = generateBuffer(hello_world);
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textNode->VAOIndexCount = hello_world.indices.size();
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textNode->diffuseTextureID = t_charmapID;
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textNode->isIlluminated = false;
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textNode->isInverted = true;
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getTimeDeltaSeconds();
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std::cout << "Ready. Click to start!" << std::endl;
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@ -154,6 +191,14 @@ void updateNodeTransformations(SceneNode* node, glm::mat4 transformationThusFar,
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glm::mat4 transformationMatrix(1.0);
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switch(node->nodeType) {
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case HUD:
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// We orthographic now, bitches!
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// set orthographic VP
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V = glm::mat4(1.0);
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P = glm::ortho(-float(windowWidth) / float(windowHeight), float(windowWidth) / float(windowHeight), -1.0f, 1.0f);//, -10.0f, 120.0f);
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break;
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case NORMAL_TEXTURED_GEOMETRY:
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case TEXTURED_GEOMETRY:
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case GEOMETRY:
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transformationMatrix =
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glm::translate(glm::mat4(1.0), node->position)
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@ -342,13 +387,25 @@ void updateFrame(GLFWwindow* window) {
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void renderNode(SceneNode* node) {
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glUniformMatrix4fv(3, 1, GL_FALSE, glm::value_ptr(node->currentTransformationMatrix));
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glUniformMatrix4fv(4, 1, GL_FALSE, glm::value_ptr(node->currentTransformationMatrixMV));
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glUniformMatrix4fv(5, 1, GL_FALSE, glm::value_ptr(node->currentTransformationMatrixMVnormal));
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glUniformMatrix4fv(6, 1, GL_FALSE, glm::value_ptr(node->currentTransformationMatrix));
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glUniformMatrix4fv(7, 1, GL_FALSE, glm::value_ptr(node->currentTransformationMatrixMV));
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glUniformMatrix4fv(8, 1, GL_FALSE, glm::value_ptr(node->currentTransformationMatrixMVnormal));
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glUniform1ui(shader->location("isNormalMapped"), false);
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glUniform1ui(shader->location("isTextured"), false);
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switch(node->nodeType) {
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case NORMAL_TEXTURED_GEOMETRY:
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glUniform1ui(shader->location("isNormalMapped"), true);
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glBindTextureUnit(1, node->normalTextureID);
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[[fallthrough]];
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case TEXTURED_GEOMETRY:
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glUniform1ui(shader->location("isTextured"), true);
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glBindTextureUnit(0, node->diffuseTextureID);
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[[fallthrough]];
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case GEOMETRY:
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if(node->vertexArrayObjectID != -1) {
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glUniform1ui(shader->location("isIlluminated"), node->isIlluminated);
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glUniform1ui(shader->location("isInverted"), node->isInverted);
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glBindVertexArray(node->vertexArrayObjectID);
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glDrawElements(GL_TRIANGLES, node->VAOIndexCount, GL_UNSIGNED_INT, nullptr);
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}
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@ -365,6 +422,8 @@ void renderNode(SceneNode* node) {
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break;
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}
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case HUD:
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break;
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}
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for(SceneNode* child : node->children) {
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@ -24,6 +24,10 @@ void runProgram(GLFWwindow* window, CommandLineOptions options)
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// Configure miscellaneous OpenGL settings
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glEnable(GL_CULL_FACE);
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//enable alpha
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glEnable(GL_BLEND);
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glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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// Set default colour after clearing the colour buffer
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glClearColor(0.3f, 0.5f, 0.8f, 1.0f);
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@ -4,6 +4,9 @@
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SceneNode* createSceneNode() {
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return new SceneNode();
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}
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SceneNode* createSceneNode(SceneNodeType type) {
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return new SceneNode(type);
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}
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// Add a child node to its parent's list of children
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void addChild(SceneNode* parent, SceneNode* child) {
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@ -26,4 +29,3 @@ void printNode(SceneNode* node) {
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node->referencePoint.x, node->referencePoint.y, node->referencePoint.z,
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node->vertexArrayObjectID);
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}
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@ -14,7 +14,7 @@
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#include <fstream>
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enum SceneNodeType {
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GEOMETRY, POINT_LIGHT, SPOT_LIGHT
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GEOMETRY, POINT_LIGHT, SPOT_LIGHT, HUD, TEXTURED_GEOMETRY, NORMAL_TEXTURED_GEOMETRY
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};
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// In case you haven't got much experience with C or C++, let me explain this "typedef" you see below.
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@ -33,6 +33,12 @@ struct SceneNode {
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nodeType = GEOMETRY;
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targeted_by = nullptr;
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isIlluminated = true;
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isInverted = false;
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}
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SceneNode(SceneNodeType type) : SceneNode() {
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nodeType = type;
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}
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// A list of all children that belong to this node.
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@ -56,6 +62,12 @@ struct SceneNode {
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int vertexArrayObjectID;
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unsigned int VAOIndexCount;
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unsigned int diffuseTextureID;
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unsigned int normalTextureID;
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bool isIlluminated;
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bool isInverted;
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// Node type is used to determine how to handle the contents of a node
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SceneNodeType nodeType;
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@ -67,6 +79,7 @@ struct SceneNode {
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// Struct for keeping track of 2D coordinates
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SceneNode* createSceneNode();
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SceneNode* createSceneNode(SceneNodeType type);
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void addChild(SceneNode* parent, SceneNode* child);
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void printNode(SceneNode* node);
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@ -4,6 +4,7 @@
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Mesh generateTextGeometryBuffer(std::string text, float characterHeightOverWidth, float totalTextWidth) {
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float characterWidth = totalTextWidth / float(text.length());
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float characterHeight = characterHeightOverWidth * characterWidth;
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float textureWidth = 1.0 / 128.0;
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unsigned int vertexCount = 4 * text.length();
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unsigned int indexCount = 6 * text.length();
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@ -12,10 +13,13 @@ Mesh generateTextGeometryBuffer(std::string text, float characterHeightOverWidth
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mesh.vertices.resize(vertexCount);
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mesh.indices.resize(indexCount);
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mesh.textureCoordinates.resize(vertexCount);
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for(unsigned int i = 0; i < text.length(); i++)
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{
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float baseXCoordinate = float(i) * characterWidth;
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float baseXTexture = float(text[i]) * textureWidth;
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mesh.vertices.at(4 * i + 0) = {baseXCoordinate, 0, 0};
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mesh.vertices.at(4 * i + 1) = {baseXCoordinate + characterWidth, 0, 0};
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@ -32,6 +36,16 @@ Mesh generateTextGeometryBuffer(std::string text, float characterHeightOverWidth
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mesh.indices.at(6 * i + 3) = 4 * i + 0;
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mesh.indices.at(6 * i + 4) = 4 * i + 2;
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mesh.indices.at(6 * i + 5) = 4 * i + 3;
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mesh.textureCoordinates.at(4 * i + 0) = {baseXTexture, 0};
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mesh.textureCoordinates.at(4 * i + 1) = {baseXTexture + textureWidth, 0};
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mesh.textureCoordinates.at(4 * i + 2) = {baseXTexture + textureWidth, 1};
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mesh.textureCoordinates.at(4 * i + 0) = {baseXTexture, 0};
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mesh.textureCoordinates.at(4 * i + 2) = {baseXTexture + textureWidth, 1};
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mesh.textureCoordinates.at(4 * i + 3) = {baseXTexture, 1};
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}
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return mesh;
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@ -2,7 +2,7 @@
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#include <program.hpp>
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#include "glutils.h"
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unsigned int generateBuffer(Mesh &mesh) {
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unsigned int generateBuffer(Mesh &mesh, bool isNormalMapped) {
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unsigned int vaoID;
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glGenVertexArrays(1, &vaoID);
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glBindVertexArray(vaoID);
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@ -26,6 +26,93 @@ unsigned int generateBuffer(Mesh &mesh) {
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glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, indexBufferID);
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glBufferData(GL_ELEMENT_ARRAY_BUFFER, mesh.indices.size() * sizeof(unsigned int), mesh.indices.data(), GL_STATIC_DRAW);
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if (mesh.textureCoordinates.empty()) return vaoID;
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unsigned int textureBufferID;
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glGenBuffers(1, &textureBufferID);
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glBindBuffer(GL_ARRAY_BUFFER, textureBufferID);
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glBufferData(GL_ARRAY_BUFFER, mesh.textureCoordinates.size() * sizeof(glm::vec2), mesh.textureCoordinates.data(), GL_STATIC_DRAW);
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glVertexAttribPointer(2, 2, GL_FLOAT, GL_FALSE, 2 * sizeof(float), 0);
|
||||
glEnableVertexAttribArray(2);
|
||||
|
||||
if (isNormalMapped) addTangents(vaoID, mesh);
|
||||
|
||||
return vaoID;
|
||||
}
|
||||
|
||||
void addTangents(unsigned int vaoID, Mesh& mesh) {
|
||||
glm::vec3 tangents[mesh.vertices.size()];
|
||||
glm::vec3 bitangents[mesh.vertices.size()];
|
||||
|
||||
for (unsigned int i = 0; i < mesh.indices.size(); i+=3) {
|
||||
const glm::vec3& pos1 = mesh.vertices[mesh.indices[i+0]];
|
||||
const glm::vec3& pos2 = mesh.vertices[mesh.indices[i+1]];
|
||||
const glm::vec3& pos3 = mesh.vertices[mesh.indices[i+2]];
|
||||
|
||||
const glm::vec2& uv1 = mesh.textureCoordinates[mesh.indices[i+0]];
|
||||
const glm::vec2& uv2 = mesh.textureCoordinates[mesh.indices[i+1]];
|
||||
const glm::vec2& uv3 = mesh.textureCoordinates[mesh.indices[i+2]];
|
||||
|
||||
glm::vec3 edge1 = pos2 - pos1;
|
||||
glm::vec3 edge2 = pos3 - pos1;
|
||||
glm::vec2 deltaUV1 = uv2 - uv1;
|
||||
glm::vec2 deltaUV2 = uv3 - uv1;
|
||||
|
||||
float f = 1.0f / (deltaUV1.x * deltaUV2.y - deltaUV2.x * deltaUV1.y);
|
||||
|
||||
glm::vec3 tangent, bitangent;
|
||||
tangent.x = f * (deltaUV2.y * edge1.x - deltaUV1.y * edge2.x);
|
||||
tangent.y = f * (deltaUV2.y * edge1.y - deltaUV1.y * edge2.y);
|
||||
tangent.z = f * (deltaUV2.y * edge1.z - deltaUV1.y * edge2.z);
|
||||
|
||||
bitangent.x = f * (-deltaUV2.x * edge1.x + deltaUV1.x * edge2.x);
|
||||
bitangent.y = f * (-deltaUV2.x * edge1.y + deltaUV1.x * edge2.y);
|
||||
bitangent.z = f * (-deltaUV2.x * edge1.z + deltaUV1.x * edge2.z);
|
||||
|
||||
tangent = glm::normalize(tangent);
|
||||
bitangent = glm::normalize(bitangent);
|
||||
|
||||
// handedness
|
||||
tangents[i+0] = -tangent;
|
||||
tangents[i+1] = -tangent;
|
||||
tangents[i+2] = -tangent;
|
||||
bitangents[i+0] = -bitangent;
|
||||
bitangents[i+1] = -bitangent;
|
||||
bitangents[i+2] = -bitangent;
|
||||
}
|
||||
|
||||
glBindVertexArray(vaoID);
|
||||
|
||||
unsigned int tangentBufferID;
|
||||
glGenBuffers(1, &tangentBufferID);
|
||||
glBindBuffer(GL_ARRAY_BUFFER, tangentBufferID);
|
||||
glBufferData(GL_ARRAY_BUFFER, mesh.vertices.size() * sizeof(glm::vec3), tangents, GL_STATIC_DRAW);
|
||||
glVertexAttribPointer(3, 3, GL_FLOAT, GL_FALSE, 3 * sizeof(float), 0);
|
||||
glEnableVertexAttribArray(3);
|
||||
|
||||
unsigned int bitangentBufferID;
|
||||
glGenBuffers(1, &bitangentBufferID);
|
||||
glBindBuffer(GL_ARRAY_BUFFER, bitangentBufferID);
|
||||
glBufferData(GL_ARRAY_BUFFER, mesh.vertices.size() * sizeof(glm::vec3), bitangents, GL_STATIC_DRAW);
|
||||
glVertexAttribPointer(4, 3, GL_FLOAT, GL_FALSE, 3 * sizeof(float), 0);
|
||||
glEnableVertexAttribArray(4);
|
||||
}
|
||||
|
||||
unsigned int generateTexture(PNGImage& texture) {
|
||||
unsigned int id;
|
||||
glGenTextures(1, &id);
|
||||
glBindTexture(GL_TEXTURE_2D, id);
|
||||
|
||||
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
|
||||
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
|
||||
|
||||
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
|
||||
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
|
||||
|
||||
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, texture.width, texture.height, 0, GL_RGBA, GL_UNSIGNED_BYTE, texture.pixels.data());
|
||||
//glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, texture.width, texture.height, 0, GL_RGBA, GL_UNSIGNED_BYTE, texture.pixels.data());
|
||||
|
||||
glGenerateMipmap(GL_TEXTURE_2D);
|
||||
|
||||
return id;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -1,5 +1,11 @@
|
|||
#pragma once
|
||||
|
||||
#include "mesh.h"
|
||||
#include "imageLoader.hpp"
|
||||
|
||||
unsigned int generateBuffer(Mesh &mesh);
|
||||
|
||||
unsigned int generateBuffer(Mesh &mesh, bool isNormalMapped = false);
|
||||
|
||||
void addTangents(unsigned int vaoID, Mesh& mesh);
|
||||
|
||||
unsigned int generateTexture(PNGImage& texture);
|
||||
|
|
|
|||
Loading…
Reference in New Issue