feat: included glm to Cmake

CMakeLists.txt

@@ -4,8 +4,13 @@ project(64kDemo VERSION 0.1
 		DESCRIPTION "CPU SDF Renderer"
 		LANGUAGES CXX)
 
+set (CMAKE_CXX_STANDARD 11)
+set(CMAKE_CXX_STANDARD_REQUIRED True)
 SET(CMAKE_CXX_FLAGS "-Os -s")
 
+
 add_executable(one main.cpp)
 
-target_link_libraries(one m glfw GLEW GL)
+find_package(glm REQUIRED)
+
+target_link_libraries(one m glfw GLEW GL glm::glm)

PerformanceAnalyser.hpp

@@ -0,0 +1,40 @@
+#include <GL/glew.h>
+#include <cmath>
+#include <iostream>
+
+class PerformanceAnalyser {
+  private:
+    double lastFrameTime = 0;
+    int frameCount = 0;
+    double timeAcc = 0;
+    double lastFps = 0;
+
+  public:
+    PerformanceAnalyser(int framesToAcc = 10, bool autoPrint = true)
+        : framesToAcc(framesToAcc), autoPrint(autoPrint) {};
+
+    int framesToAcc;
+    bool autoPrint;
+
+    int getFPS() { return lastFps; }
+
+    void update(float time) {
+
+        timeAcc += (time - lastFrameTime);
+        lastFrameTime = time;
+        frameCount++;
+
+        if (frameCount == framesToAcc) {
+
+            lastFps = double(framesToAcc) / timeAcc;
+
+            if (autoPrint) {
+                std::cout << "Fps: " << std::round(lastFps * 10.0) * 0.1 << "\n"
+                          << std::flush;
+            }
+
+            frameCount = 0;
+            timeAcc = 0;
+        }
+    }
+};

build.sh

@@ -0,0 +1,14 @@
+#!/bin/bash
+cd build
+cmake --build .
+CMD="#!/bin/bash
+dd bs=1 skip=%s<\$0|unlzma>/tmp/C;chmod +x /tmp/C;trap '' HUP;/tmp/C&"
+COUNT=$(printf "$CMD" | wc -c)
+EXTRA=$(printf "$COUNT" | wc -c)
+COUNT=$((COUNT + EXTRA + 1))
+echo "$CMD" | sed 's/%s/'"$COUNT"'/' > two
+chmod +x two
+sstrip one
+lzma -9 one
+cat one.lzma >> two
+rm one.lzma

main.cpp

@@ -1,14 +1,16 @@
 #include "FullScreenQuad.hpp"
+#include "PerformanceAnalyser.hpp"
 #include <GL/glew.h>
 #include <GLFW/glfw3.h>
 #include <cstdio>
+#include <iostream>
 
 const char *vertexShaderSource =
-#include "fsq.vs"
+#include "fsq.glsl"
     ;
 
 const char *fragmentShaderSource =
-#include "sdf.fs"
+#include "sdf.glsl"
     ;
 
 /*void framebuffer_size_callback(GLFWwindow* window, int width, int height)
@@ -104,7 +106,15 @@ int main(int argc, char **argv) {
 
     FullScreenQuad fsq{};
 
+    PerformanceAnalyser perf{};
+
+    double time = glfwGetTime();
+
     while (!glfwWindowShouldClose(window)) {
+
+        time = glfwGetTime();
+        perf.update(time);
+
         processInput(window);
         /* Render here */
 
@@ -112,8 +122,12 @@ int main(int argc, char **argv) {
         glClear(GL_COLOR_BUFFER_BIT);
 
         glUseProgram(shaderProgram);
+
         int aspectLocation = glGetUniformLocation(shaderProgram, "aspect");
         glUniform1f(aspectLocation, aspect);
+        int timeLocation = glGetUniformLocation(shaderProgram, "t");
+        glUniform1f(timeLocation, 2. * time);
+
         glBindVertexArray(fsq.getVAO());
         glDrawArrays(GL_TRIANGLES, 0, 6);
 

readme.md

@@ -8,6 +8,9 @@
     - [ ] Shader Management
         - [ ] Configure Preprocessor
         - [ ] Shader Storage
+    - [x] Binary compression
+
+- [x] C++ Math Lib
 
 - [ ] SDF
     - [ ] Basic Shape Rendering
@@ -25,7 +28,7 @@
         - [ ] Rounding
         - [ ] Boolean
         - [ ] Infinite
-        - [ ] Displacement
+        - [x] Displacement
         - [ ] Twist
         - [ ] Bend
 

sdf.glsl

@@ -5,30 +5,54 @@ out vec4 FragColor;
 in vec2 texCoords;
 
 uniform float aspect;
+uniform float t;
 
-vec3 center = vec3(0.0,0.0,20.0);
+vec3 center = vec3(0.0,-4.0,20.0);
 float radius = 5.0;
 
 float planeHeight = -7.0;
 
+struct SmallHit {
+    float min;
+    float len;
+    bool firstHP;
+};
+
 struct Ray {
     vec3 dir;
     vec3 pos;
     float min;
     float len;
+    SmallHit small;
     vec3 color;
 };
 
-Ray applyMin(Ray ray) {
-    vec3 off = ray.dir * ray.min;
+Ray createRay(vec3 dir, vec3 pos){
+    return Ray(dir, pos, .0, .0, SmallHit(80.,0.,false), vec3(1.0));
+}
+
+Ray applyMin(Ray ray, float min) {
+    vec3 off = ray.dir * min;
     ray.pos = ray.pos + off;
-    ray.len = ray.len +  ray.min;
+    ray.len = ray.len +  min;
+
+    if( (min < ray.min) && !ray.small.firstHP ){
+        ray.small.firstHP = true;
+    }
+
+    ray.min = min;
+
+    if((ray.min < ray.small.min) && ray.small.firstHP){
+        ray.small.min = ray.min;
+        ray.small.len = ray.len;
+    }
+    
     return ray;
 }
 
 
 float planeMin(vec3 pos){
-    return pos.y - planeHeight;
+    return pos.y - planeHeight+ 0.2*sin(5*pos.x+t)*sin(5*pos.y+t)*sin(5*pos.z+t);
 }
 
 float sphereMin(vec3 pos){
@@ -38,18 +62,15 @@ float sphereMin(vec3 pos){
 Ray minFn(Ray ray){
     float sp = sphereMin(ray.pos);
     float pl = planeMin(ray.pos);
-
-
-    
-
+    float min;
     if (sp < pl){
         ray.color = vec3(1.0, 0.5, 0.2);
-        ray.min = sp;
+        min = sp;
     } else {
         ray.color = vec3(0.2, 0.3, 0.3);
-        ray.min = pl;
+        min = pl;
     }
-    return applyMin(ray);
+    return applyMin(ray,min);
     }
 
 float minFn(vec3 pos){
@@ -67,11 +88,13 @@ Ray march(Ray ray){
     //ray.min = minFn(ray.pos);
     ray = minFn(ray);
     int c = 0;
-    while(( c < 200) && (ray.min < 100.0f) && (ray.min > 0.1f) ) {
+    while(( c < 1000) && (ray.min < 100.0f) && (ray.min > 0.01f) ) {
         ray = minFn(ray);    
         c++;
     }
-
+    if(ray.min > 0.01){
+        ray.color = vec3(1.0);
+    }
     return ray;
 }
 
@@ -93,8 +116,7 @@ void main()
     vec3 dir = vec3((texCoords - 0.5)*2,1.0);
     dir.x *= aspect;
     vec3 pos = dir;
-    Ray ray = Ray(normalize(dir),pos,.0,.0,vec3(.0));
-
+    Ray ray = createRay(normalize(dir),pos);
     ray = march(ray);
 
     vec3 normal = calcNormal(ray);
@@ -104,31 +126,32 @@ void main()
 
     float shLeve = 1.0;
  
-    vec2 offsets[8] = vec2[](
-        vec2( -0.94201624, -0.39906216 ),
-        vec2( 0.94558609, -0.76890725 ),
-        vec2( -0.094184101, -0.92938870 ),
-        vec2( 0.34495938, 0.29387760 ),
-        vec2( 0.94201624, 0.39906216 ),
-        vec2( -0.94558609, 0.76890725 ),
-        vec2( 0.094184101, 0.92938870 ),
-        vec2( -0.34495938, -0.29387760 )
-    );
 
-    for(int i = 0; i < 8; i++){
-        Ray shRay = Ray(lighDir * (-1.0) + vec3(offsets[i].x,.0,offsets[i].y)*0.05, ray.pos + 0.5*normal, .0,.0, vec3(.0));
+    Ray shRay = createRay(lighDir * (-1.0), ray.pos + (-0.5)*lighDir);
     shRay = march(shRay);
-        if( (dot(lighDir,normal) < 0.0) && (shRay.len <20)){
-            shLeve -= 0.125*max(1.0-shRay.len*0.07 , 0.0);
-        }
-    }
 
-    light *= shLeve * .8;
+    if( dot(lighDir,normal) < 0. ){
+        if( shRay.len <80){
+            shLeve = .0;//shRay.len*0.02 , 0.0;
+        }
+        else {
+            shLeve = shRay.small.min / shRay.small.len;
+            shLeve *= 9.0;
+            //shLeve = pow(shLeve*10.0,0.5);
+        }
+    }
+    shLeve = min(max(shLeve, 0.0),1.0);
+
+    light *= shLeve;
+
+    Ray reflectR = createRay(reflect(ray.dir,normal),ray.pos + 0.1* normal);
+    reflectR = march(reflectR);
 
     if(ray.min <= 0.2){
-        FragColor = vec4(ray.color * (light+0.3), 1.0);
+        //FragColor = vec4(0,1,0,1.0);
+        FragColor = vec4(mix(ray.color,reflectR.color,0.3) * (light+0.3), 1.0);
     } else {
-        FragColor = vec4(.0,0.0,0.0,1.0);
+        FragColor = vec4(ray.color,1.0);
     }
 
 }