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Make ground mesh, improve particles

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This commit is contained in:
karl 2021-05-08 17:52:33 +02:00
parent 82fae245a1
commit 5016ee49d1
4 changed files with 49 additions and 50 deletions
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7
Shader/bump.fs
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@ -62,11 +62,12 @@ void main() {
vec3 view_direction = normalize(fs_in.TangentViewPos - fs_in.TangentFragPos); vec3 view_direction = normalize(fs_in.TangentViewPos - fs_in.TangentFragPos);
vec2 uv = fs_in.TexCoords; vec2 uv = fs_in.TexCoords;
uv = get_parallax_offset_uv(fs_in.TexCoords, view_direction); uv = get_parallax_offset_uv(uv, view_direction);
// Discard if the parallax offset moved us outside of the texture // Discard if the parallax offset moved us outside of the texture
if (uv.x > 1.0 || uv.y > 1.0 || uv.x < 0.0 || uv.y < 0.0) // TODO: Do this only if the mode is not REPEAT
discard; //if (uv.x > 1.0 || uv.y > 1.0 || uv.x < 0.0 || uv.y < 0.0)
// discard;
// Get normal from normal map and scale it to -1..1 // Get normal from normal map and scale it to -1..1
vec3 normal = texture(normalMap, uv).rgb; vec3 normal = texture(normalMap, uv).rgb;

7
cpp/ParticleSystem.cpp
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@ -1,6 +1,8 @@
#include "Gedeng/ParticleSystem.h" #include "Gedeng/ParticleSystem.h"
#include "Gedeng/Logger.h" #include "Gedeng/Logger.h"
#include <glm/gtc/random.hpp>
namespace Gedeng { namespace Gedeng {
ParticleSystem::ParticleSystem() { ParticleSystem::ParticleSystem() {
@ -69,9 +71,8 @@ void ParticleSystem::update(float delta) {
update_shader.setInt("number_to_generate", target_particle_count); update_shader.setInt("number_to_generate", target_particle_count);
elapsed_time -= next_generation_time; elapsed_time -= next_generation_time;
glm::vec3 random_seed = glm::vec3( glm::vec3 random_seed =
10.0, 10.0, glm::vec3(glm::linearRand(-10.0f, 20.0f), glm::linearRand(-10.0f, 20.0f), glm::linearRand(-10.0f, 20.0f));
10.0); // FIXME: Random glm::vec3(grandf(-10.0f, 20.0f), grandf(-10.0f, 20.0f), grandf(-10.0f, 20.0f));
update_shader.setVec3("random_seed", random_seed); update_shader.setVec3("random_seed", random_seed);
} }

61
include/Gedeng/QuadMesh.h
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@ -13,21 +13,21 @@ namespace Gedeng {
// A simple 2x2 quad mesh consisting of two triangles. Oriented upwards by default. // A simple 2x2 quad mesh consisting of two triangles. Oriented upwards by default.
class QuadMesh : public Spatial { class QuadMesh : public Spatial {
public: public:
QuadMesh() { QuadMesh(float scale = 1.0f) {
// Positions // Positions
glm::vec3 pos1(-1.0f, 1.0f, 0.0f); glm::vec3 pos1 = glm::vec3(-1.0f, 0.0f, 1.0f) * scale;
glm::vec3 pos2(-1.0f, -1.0f, 0.0f); glm::vec3 pos2 = glm::vec3(-1.0f, 0.0f, -1.0f) * scale;
glm::vec3 pos3(1.0f, -1.0f, 0.0f); glm::vec3 pos3 = glm::vec3(1.0f, 0.0f, -1.0f) * scale;
glm::vec3 pos4(1.0f, 1.0f, 0.0f); glm::vec3 pos4 = glm::vec3(1.0f, 0.0f, 1.0f) * scale;
// Texture coordinates // Texture coordinates
glm::vec2 uv1(0.0f, 1.0f); glm::vec2 uv1 = glm::vec2(0.0f, 1.0f) * scale;
glm::vec2 uv2(0.0f, 0.0f); glm::vec2 uv2 = glm::vec2(0.0f, 0.0f) * scale;
glm::vec2 uv3(1.0f, 0.0f); glm::vec2 uv3 = glm::vec2(1.0f, 0.0f) * scale;
glm::vec2 uv4(1.0f, 1.0f); glm::vec2 uv4 = glm::vec2(1.0f, 1.0f) * scale;
// Normal vector // Normal vector
glm::vec3 nm(0.0f, 0.0f, 1.0f); glm::vec3 nm(0.0f, 1.0f, 0.0f);
// Calculate tangent/bitangent vectors of both triangles // Calculate tangent/bitangent vectors of both triangles
glm::vec3 tangent1, bitangent1; glm::vec3 tangent1, bitangent1;
@ -69,21 +69,20 @@ class QuadMesh : public Spatial {
bitangent2.z = f * (-deltaUV2.x * edge1.z + deltaUV1.x * edge2.z); bitangent2.z = f * (-deltaUV2.x * edge1.z + deltaUV1.x * edge2.z);
bitangent2 = glm::normalize(bitangent2); bitangent2 = glm::normalize(bitangent2);
float quadVertices[] = { float quadVertices[] = {// positions // normal // texcoords // tangent // bitangent
// positions // normal // texcoords // tangent // bitangent pos1.x, pos1.y, pos1.z, nm.x, nm.y, nm.z, uv1.x,
pos1.x, pos1.y, pos1.z, nm.x, nm.y, nm.z, uv1.x, uv1.y, tangent1.x, tangent1.y, tangent1.z, bitangent1.x, bitangent1.y, bitangent1.z,
uv1.y, tangent1.x, tangent1.y, tangent1.z, bitangent1.x, bitangent1.y, bitangent1.z, pos2.x, pos2.y, pos2.z, nm.x, nm.y, nm.z, uv2.x,
pos2.x, pos2.y, pos2.z, nm.x, nm.y, nm.z, uv2.x, uv2.y, tangent1.x, tangent1.y, tangent1.z, bitangent1.x, bitangent1.y, bitangent1.z,
uv2.y, tangent1.x, tangent1.y, tangent1.z, bitangent1.x, bitangent1.y, bitangent1.z, pos3.x, pos3.y, pos3.z, nm.x, nm.y, nm.z, uv3.x,
pos3.x, pos3.y, pos3.z, nm.x, nm.y, nm.z, uv3.x, uv3.y, tangent1.x, tangent1.y, tangent1.z, bitangent1.x, bitangent1.y, bitangent1.z,
uv3.y, tangent1.x, tangent1.y, tangent1.z, bitangent1.x, bitangent1.y, bitangent1.z,
pos1.x, pos1.y, pos1.z, nm.x, nm.y, nm.z, uv1.x, pos1.x, pos1.y, pos1.z, nm.x, nm.y, nm.z, uv1.x,
uv1.y, tangent2.x, tangent2.y, tangent2.z, bitangent2.x, bitangent2.y, bitangent2.z, uv1.y, tangent2.x, tangent2.y, tangent2.z, bitangent2.x, bitangent2.y, bitangent2.z,
pos3.x, pos3.y, pos3.z, nm.x, nm.y, nm.z, uv3.x, pos3.x, pos3.y, pos3.z, nm.x, nm.y, nm.z, uv3.x,
uv3.y, tangent2.x, tangent2.y, tangent2.z, bitangent2.x, bitangent2.y, bitangent2.z, uv3.y, tangent2.x, tangent2.y, tangent2.z, bitangent2.x, bitangent2.y, bitangent2.z,
pos4.x, pos4.y, pos4.z, nm.x, nm.y, nm.z, uv4.x, pos4.x, pos4.y, pos4.z, nm.x, nm.y, nm.z, uv4.x,
uv4.y, tangent2.x, tangent2.y, tangent2.z, bitangent2.x, bitangent2.y, bitangent2.z}; uv4.y, tangent2.x, tangent2.y, tangent2.z, bitangent2.x, bitangent2.y, bitangent2.z};
// Configure plane VAO // Configure plane VAO
glGenVertexArrays(1, &quadVAO); glGenVertexArrays(1, &quadVAO);
@ -94,17 +93,13 @@ class QuadMesh : public Spatial {
glEnableVertexAttribArray(0); glEnableVertexAttribArray(0);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 14 * sizeof(float), (void *)0); glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 14 * sizeof(float), (void *)0);
glEnableVertexAttribArray(1); glEnableVertexAttribArray(1);
glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, 14 * sizeof(float), glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, 14 * sizeof(float), (void *)(3 * sizeof(float)));
(void *)(3 * sizeof(float)));
glEnableVertexAttribArray(2); glEnableVertexAttribArray(2);
glVertexAttribPointer(2, 2, GL_FLOAT, GL_FALSE, 14 * sizeof(float), glVertexAttribPointer(2, 2, GL_FLOAT, GL_FALSE, 14 * sizeof(float), (void *)(6 * sizeof(float)));
(void *)(6 * sizeof(float)));
glEnableVertexAttribArray(3); glEnableVertexAttribArray(3);
glVertexAttribPointer(3, 3, GL_FLOAT, GL_FALSE, 14 * sizeof(float), glVertexAttribPointer(3, 3, GL_FLOAT, GL_FALSE, 14 * sizeof(float), (void *)(8 * sizeof(float)));
(void *)(8 * sizeof(float)));
glEnableVertexAttribArray(4); glEnableVertexAttribArray(4);
glVertexAttribPointer(4, 3, GL_FLOAT, GL_FALSE, 14 * sizeof(float), glVertexAttribPointer(4, 3, GL_FLOAT, GL_FALSE, 14 * sizeof(float), (void *)(11 * sizeof(float)));
(void *)(11 * sizeof(float)));
} }
void render(Shader &shader) { void render(Shader &shader) {
@ -120,4 +115,4 @@ class QuadMesh : public Spatial {
unsigned int quadVBO; unsigned int quadVBO;
}; };
} } // namespace Gedeng

22
test/particle-demo/main.cpp
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@ -1,5 +1,6 @@
#include "Gedeng/Logger.h" #include "Gedeng/Logger.h"
#include "Gedeng/ParticleSystem.h" #include "Gedeng/ParticleSystem.h"
#include "Gedeng/QuadMesh.h"
#include "Gedeng/TextLabel.h" #include "Gedeng/TextLabel.h"
#include "Gedeng/Vector3.h" #include "Gedeng/Vector3.h"
#define GEDENG_MAIN #define GEDENG_MAIN
@ -15,18 +16,19 @@ class ParticleApp : public Gedeng::Application {
camera(Gedeng::FPSCamera(90, 1920, 1080, 0.1, 1000.0)), camera(Gedeng::FPSCamera(90, 1920, 1080, 0.1, 1000.0)),
albedo("Resources/Textures/PavingStones/PavingStones070_2K_Color.jpg", Gedeng::Texture::Settings()), albedo("Resources/Textures/PavingStones/PavingStones070_2K_Color.jpg", Gedeng::Texture::Settings()),
bump("Resources/Textures/PavingStones/PavingStones070_2K_Displacement.jpg", Gedeng::Texture::Settings()), bump("Resources/Textures/PavingStones/PavingStones070_2K_Displacement.jpg", Gedeng::Texture::Settings()),
normal("Resources/Textures/PavingStones/PavingStones070_2K_Normal.jpg", Gedeng::Texture::Settings()) { normal("Resources/Textures/PavingStones/PavingStones070_2K_Normal.jpg", Gedeng::Texture::Settings()),
particles.set_position(glm::vec3(0.0f, 0.0f, -10.0f)); quad_mesh(Gedeng::QuadMesh(10.0)) {
particles.set_velocity(glm::vec3(-5, 0, -5), glm::vec3(5, 20, 5)); particles.set_position(glm::vec3(0.0f, 0.0f, -5.0f));
particles.set_gravity(glm::vec3(0, -5, 0)); particles.set_velocity(glm::vec3(-1, 0, -1), glm::vec3(1, 5, 1));
particles.set_gravity(glm::vec3(0, -1, 0));
particles.set_color(glm::vec3(0.0f, 0.5f, 1.0f)); particles.set_color(glm::vec3(0.0f, 0.5f, 1.0f));
particles.set_lifetime(1.5f, 3.0f); particles.set_lifetime(5.0f, 10.0f);
particles.set_size(0.75f); particles.set_size(0.1);
particles.set_interval(0.5f); particles.set_interval(0.05f);
particles.set_number_of_particles(30); particles.set_number_of_particles(50);
particles.set_texture(&albedo); particles.set_texture(&albedo);
camera.translate(glm::vec3(0.0, 0.0, 1.0)); camera.translate(glm::vec3(0.0, 2.0, 1.0));
// camera.rotate(30, glm::vec3(1.0, 0.0, 0.0)); // camera.rotate(30, glm::vec3(1.0, 0.0, 0.0));
} }
@ -38,7 +40,7 @@ class ParticleApp : public Gedeng::Application {
} }
void dynamic_update(double delta) override { void dynamic_update(double delta) override {
glClearColor(0.85f, 0.9f, 0.94f, 1.0f); glClearColor(0.1, 0.1f, 0.1, 1.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
render_shader.use(); render_shader.use();