.gitlab-ci.yml

@@ -7,7 +7,6 @@ stages:
 
 variables:
   VCPKG_ROOT: "/vcpkg"
-  CMAKE_BUILD_TYPE: "Release"
 
 build:
   stage: build

CHANGELOG.md

@@ -1,11 +1,3 @@
 ## [v0.0.2] - 2024-08-25
 ### Changed
 - Refactored uniform handling in the initial geometry pass to improve maintainability.
-
-## [v0.0.3] - 2024-08-28
-### Changed
-- Correctly manage window resizing for camera aspect ratio
-
-## [v0.0.4] - 2024-08-28
-### Changed
-- Added dynamic tessellation determined by the slope of the terrain

CMakeLists.txt

@@ -1,5 +1,5 @@
 cmake_minimum_required(VERSION 3.10)
-project(TerraVisor VERSION 0.0.4)
+project(TerraVisor VERSION 0.0.2)
 
 set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)

imgui.ini

@@ -19,7 +19,7 @@ Collapsed=0
 
 [Window][TerraVisor]
 Pos=0,0
-Size=2880,1676
+Size=1676,1017
 Collapsed=0
 
 [Window][Scene Window]
@@ -29,21 +29,21 @@ Collapsed=0
 DockId=0x00000003,0
 
 [Window][Viewport]
-Pos=0,34
+Pos=0,19
-Size=2178,1641
+Size=1224,998
 Collapsed=0
 DockId=0x00000003,0
 
 [Window][Scene Settings]
-Pos=2181,34
+Pos=1226,19
-Size=699,1641
+Size=450,998
 Collapsed=0
 DockId=0x00000004,0
 
 [Docking][Data]
-DockSpace     ID=0x6F42A598 Window=0xE80F322C Pos=0,34 Size=2880,1641 Split=X Selected=0x9F2D9299
+DockSpace     ID=0x6F42A598 Window=0xE80F322C Pos=0,19 Size=1676,998 Split=X Selected=0x9F2D9299
   DockNode    ID=0x00000001 Parent=0x6F42A598 SizeRef=0,0 Split=X Selected=0x13926F0B
-    DockNode  ID=0x00000003 Parent=0x00000001 SizeRef=578,701 CentralNode=1 Selected=0x13926F0B
+    DockNode  ID=0x00000003 Parent=0x00000001 SizeRef=2107,701 CentralNode=1 Selected=0x13926F0B
-    DockNode  ID=0x00000004 Parent=0x00000001 SizeRef=699,701 Selected=0x413E6147
+    DockNode  ID=0x00000004 Parent=0x00000001 SizeRef=450,701 Selected=0x413E6147
   DockNode    ID=0x00000002 Parent=0x6F42A598 SizeRef=419,701 Selected=0xF69494A7
 

include/interface.h

@@ -1,7 +1,6 @@
 #ifndef INTERFACE_H_
 #define INTERFACE_H_
 
-#include <GLFW/glfw3.h>
 #include <imgui.h>
 #include <string>
 #include <vector>
@@ -20,7 +19,6 @@ struct Window {
 };
 
 namespace Interface {
-    void ApplyUIScaling(GLFWwindow* window);
     void AddWindow(std::vector<Window>& windows, const std::string& name, std::function<void()> renderFunc);
     Window* GetWindowByName(std::vector<Window>& windows, const std::string& name);
     void RenderWindows(std::vector<Window>& windows);

shaders/tessellation_ctrl.glsl

@@ -24,48 +24,21 @@ in VS_OUT {
 out TC_OUT {
     vec3 position;
     vec2 texCoord;
-    float tessLevel;
 } tc_out[];
 
-float getHeight(vec2 uv) {
-    return texture(heightTexture, uv).r * displacementScale;
-}
-
-float calculateSlope() {
-    float step = 1.0f / (float(gridDensity) * maxTessellation + 1.0f);
-
-    // Find surrounding heights
-    float hLeft = getHeight(tc_in[gl_InvocationID].texCoord + vec2(-step, 0.0f));
-    float hRight = getHeight(tc_in[gl_InvocationID].texCoord + vec2(step, 0.0f));
-    float hUp = getHeight(tc_in[gl_InvocationID].texCoord + vec2(0.0f, step));
-    float hDown = getHeight(tc_in[gl_InvocationID].texCoord + vec2(0.0f, -step));
-
-    float slopeX = abs(hLeft - hRight) * displacementScale;
-    float slopeY = abs(hUp - hDown) * displacementScale;
-
-    float maxSlope = max(slopeX, slopeY);
-
-    return maxSlope;
-}
-
 void main() {
     // Pass through position and texture coordinates to the tessellation evaluation shader
     tc_out[gl_InvocationID].position = tc_in[gl_InvocationID].position;
     tc_out[gl_InvocationID].texCoord = tc_in[gl_InvocationID].texCoord;
 
-    float slope = calculateSlope();
-    float tessLevel = tessellationFactor * (1.0f + slope * 10.0f);
-    tessLevel = max(tessLevel, maxTessellation);
-    tc_out[gl_InvocationID].tessLevel = tessLevel;
-
     // Set tessellation levels
     if (gl_InvocationID == 0) {
-        gl_TessLevelOuter[0] = tessLevel; 
+        gl_TessLevelOuter[0] = maxTessellation; 
-        gl_TessLevelOuter[1] = tessLevel; 
+        gl_TessLevelOuter[1] = maxTessellation; 
-        gl_TessLevelOuter[2] = tessLevel; 
+        gl_TessLevelOuter[2] = maxTessellation; 
-        gl_TessLevelOuter[3] = tessLevel; 
+        gl_TessLevelOuter[3] = maxTessellation; 
 
-        gl_TessLevelInner[0] = tessLevel; 
+        gl_TessLevelInner[0] = maxTessellation; 
-        gl_TessLevelInner[1] = tessLevel; 
+        gl_TessLevelInner[1] = maxTessellation; 
     }
 }

shaders/tessellation_eval.glsl

@@ -18,7 +18,6 @@ layout(std140, binding = 4) uniform GeoUniforms
 in TC_OUT {
     vec3 position;
     vec2 texCoord;
-    float tessLevel;
 } te_in[];
 
 out TE_OUT {
@@ -31,25 +30,19 @@ float getHeight(vec2 uv) {
     return texture(heightTexture, uv).r * displacementScale;
 }
 
-float getNeighbor(float tessFactor) {
-    return (float(gridDensity) * tessFactor + 1.0f);
-}
-
 vec3 calculateSmoothNormal(vec3 pos, vec2 coord) {
     // Currently hardcoded to match patch density
-    //float step = 1.0f / (float(gridDensity) * tessLevel + 1.0f);
+    float step = 1.0f / (float(gridDensity) * maxTessellation + 1.0f);
-    float stepU = 1.0f / (float(gridDensity) * gl_TessLevelInner[0]);
-    float stepV = 1.0f / (float(gridDensity) * gl_TessLevelInner[1]);
 
     // Find surrounding heights
-    float hLeft = getHeight(coord + vec2(-stepU, 0.0f));
+    float hLeft = getHeight(coord + vec2(-step, 0.0f));
-    float hRight = getHeight(coord + vec2(stepU, 0.0f));
+    float hRight = getHeight(coord + vec2(step, 0.0f));
-    float hUp = getHeight(coord + vec2(0.0f, stepV));
+    float hUp = getHeight(coord + vec2(0.0f, step));
-    float hDown = getHeight(coord + vec2(0.0f, -stepV));
+    float hDown = getHeight(coord + vec2(0.0f, -step));
     
     // Calculate tangents
-    vec3 tangentX = normalize(vec3(stepU, hRight - hLeft, 0.0));
+    vec3 tangentX = normalize(vec3(step, hRight - hLeft, 0.0));
-    vec3 tangentY = normalize(vec3(0.0, hUp - hDown, stepV));
+    vec3 tangentY = normalize(vec3(0.0, hUp - hDown, step));
 
     return normalize(cross(tangentY, tangentX));
 }

source/interface.cpp

@@ -4,31 +4,9 @@
 #include <imgui_impl_opengl3.h>
 #include <algorithm>
 #include <iostream>
-#include <filesystem>
 
 namespace Interface {
 
-void ApplyUIScaling(GLFWwindow* window) {
-    float xScale, yScale;
-    glfwGetWindowContentScale(window, &xScale, &yScale);
-
-    float scale = (xScale + yScale) * 0.5f;
-
-    ImGui::GetIO().FontGlobalScale = scale;
-    ImGuiStyle& style = ImGui::GetStyle();
-    style.ScaleAllSizes(scale);
-
-    ImGuiIO& io = ImGui::GetIO();
-    io.Fonts->Clear();
-
-#ifdef _WIN32
-    io.Fonts->AddFontFromFileTTF("imgui/misc/fonts/JetBrainsMono/JetBrainsMono-Medium.ttf", 8.0f * scale);
-#else
-    io.Fonts->AddFontFromFileTTF("../imgui/misc/fonts/JetBrainsMono/JetBrainsMono-Medium.ttf", 8.0f * scale);
-#endif
-    io.Fonts->Build();
-}
-
 void AddWindow(std::vector<Window>& windows, const std::string& name, std::function<void()> renderFunc) {
     windows.emplace_back(name, renderFunc);
 }

source/main.cpp

@@ -42,7 +42,6 @@
 #include "config.h"
 #include "callbacks.h"
 #include "scene.h"
-#include "interface.h"
 
 namespace {
 
@@ -157,7 +156,6 @@ int main() {
     scene.Init();
     InitializeImGui(window);
     FreeImage_Initialise();
-    Interface::ApplyUIScaling(window);
 
     // Check if we're in test mode
     const char* testEnv = std::getenv("TEST_MODE");

source/scene.cpp

@@ -240,7 +240,8 @@ void Scene::Display(GLFWwindow* window) {
 
     glUseProgram(shader_program_);
 
-    // glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+    //glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
+
     
     Window* viewport = Interface::GetWindowByName(windows_, "Viewport");
     if (viewport && viewport->size.x > 0 && viewport->size.y > 0) {
@@ -269,9 +270,7 @@ void Scene::Display(GLFWwindow* window) {
     glPatchParameteri(GL_PATCH_VERTICES, 4);
     glDrawElements(GL_PATCHES, indices.size(), GL_UNSIGNED_INT, 0);
 
-    FBO::Unbind();
+    //glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
-
-    glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
 
     FBO::Bind(lht_fbo_);
     glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);