Finished shader; split to targets cpu, opengl and vulkan

2020-03-16 20:46:54 +01:00
parent 1b5b6d0f45
commit 8fa5172e3e
14 changed files with 807 additions and 474 deletions
--- a/cpuMain.c
+++ b/cpuMain.c
@@ -0,0 +1,93 @@
+#include "particlesystem.h"
+#include "initOpenGL.h"
+
+#define PARTICLE_AMOUNT 1000
+#define WIDTH 800
+#define HEIGHT 800
+
+#define UPPER_AGE 250
+#define LOWER_AGE 60
+
+void calcPos(particle *p, float dt);
+void calcCol(particle *p);
+
+int main()
+{
+    /************* INIT *************/
+    // Init OpenGL and GLFW
+    initGLFW();
+    setErrorCallbackGL();
+
+    int width = WIDTH, height = HEIGHT;
+    GLFWwindow *window = createGLFWWindow(WIDTH, HEIGHT, "Informatikprojekt - OpenGL CPU");
+
+    setCurrentContextGL(window);
+    setFramebufferSizeCallbackGL(window);
+
+    // glad
+    initGlad();
+
+    /************* PARTICLE SYSTEM *************/
+    vector3f *epos1 = initVector3f(0, 0, 0);
+    emitter *e1 = initEmitter(epos1, PARTICLE_AMOUNT);
+    particle_system *ps = initParticleSystem(1);
+    (ps->emitters)[0] = e1;
+    initRandomParticles(e1);
+
+    /************* RENDER LOOP *************/
+    double time, tFrame, tLast = 0;
+    while (!glfwWindowShouldClose(window))
+    {
+        time = glfwGetTime();
+        tFrame = time - tLast;
+        tLast = time;
+
+        /*** UPDATE ***/
+        updateParticles((float) tFrame, ps, calcPos, calcCol);
+
+        /*** RENDER ***/
+        glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
+        glfwGetFramebufferSize(window, &width, &height);
+
+        emitter *e;
+        particle *p;
+        vector3f *pos;
+        for (int j = 0; j < ps->eamount; j++)
+        {
+            e = (ps->emitters)[j];
+            for (int i = 0; i < e->pamount; i++)
+            {
+                p = (e->particles)[i];
+                pos = p->position;
+
+                glColor3f(p->color->x, p->color->y, p->color->z);
+                glBegin(GL_POINTS);
+                glVertex3f(pos->x, pos->y, pos->z);
+                glEnd();
+            }
+        }
+
+        glfwSwapBuffers(window);
+        glfwPollEvents();
+    }
+
+    //END
+    terminateGLFW(window);
+    freeParticleSystem(ps);
+
+    return 0;
+}
+
+void calcPos(particle *p, float dt)
+{
+    p->position->x += p->velocity->x * dt;
+    p->position->y += p->velocity->y * dt;
+    p->position->z += p->velocity->z * dt;
+}
+
+void calcCol(particle *p)
+{
+    p->color->x -= 0.00001f;
+    p->color->y -= 0.00001f;
+    p->color->z -= 0.00001f;
+}