add rudimentary drag

Armchair-Software · Dec 8, 2024 · a6d7b12 · a6d7b12
1 parent 9e4d014
commit a6d7b12
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Showing 3 changed files with 8 additions and 8 deletions.
diff --git a/main.cpp b/main.cpp
@@ -14,6 +14,8 @@ class game_manager {
   render::webgpu_renderer renderer{logger};                                     // WebGPU rendering system
   gui::gui_renderer gui{logger};                                                // GUI top level
 
+  vec2f mouse_pos_rel{};                                                        // relative mouse position
+
   void loop_main();
 
 public:
@@ -40,8 +42,7 @@ game_manager::game_manager() {
 void game_manager::loop_main() {
   /// Main pseudo-loop
   gui.draw();
-  vec2f mouse_pos_rel;
-  // TODO: populate from screen coords
+  mouse_pos_rel += vec2f{ImGui::GetMouseDragDelta()} * 0.00001f * vec2f{-1.0f, 1.0f};
   renderer.draw(mouse_pos_rel);
 }
 

diff --git a/render/shaders/default.wgsl b/render/shaders/default.wgsl
@@ -10,7 +10,6 @@ struct vertex_output {
 
 struct uniform_struct {
   interactive_input: vec2f,
-  // TODO: use this
 };
 
 @group(0) @binding(0) var<uniform> uniforms: uniform_struct;
@@ -46,7 +45,7 @@ fn mandelbrot(c: vec2f) -> mandelbrot_out {
 fn vs_main(in: vertex_input) -> vertex_output {
   var out: vertex_output;
   out.position = vec4f(in.position, 0.0, 1.0);
-  out.uv = in.uv;
+  out.uv = in.uv + uniforms.interactive_input;
   return out;
 }
 

diff --git a/render/shaders/default.wgsl.h b/render/shaders/default.wgsl.h
@@ -4,7 +4,7 @@
 
 namespace render::shaders {
 
-inline constexpr char const *default_wgsl{R"890c9c6d52412f30(struct vertex_input {
+inline constexpr char const *default_wgsl{R"bdb11fea3583576b(struct vertex_input {
   @location(0) position: vec2f,
   @location(1) uv: vec2f,
 };
@@ -29,7 +29,7 @@ fn mandelbrot(c: vec2f) -> mandelbrot_out {
       z.x * z.x - z.y * z.y,
       2.0 * z.x * z.y
     ) + c;
-    if(dot(z, z) > 4096.0) {
+    if(dot(z, z) > 128.0) {
       out.unbounded = f32(i) - log2(log2(dot(z, z)));
       return out;
     }
@@ -43,7 +43,7 @@ fn mandelbrot(c: vec2f) -> mandelbrot_out {
 fn vs_main(in: vertex_input) -> vertex_output {
   var out: vertex_output;
   out.position = vec4f(in.position, 0.0, 1.0);
-  out.uv = in.uv;
+  out.uv = in.uv + uniforms.interactive_input;
   return out;
 }
 @fragment
@@ -60,6 +60,6 @@ fn fs_main(in: vertex_output) -> @location(0) vec4f {
   );
   return vec4f(color, 1.0);
 }
-)890c9c6d52412f30"};
+)bdb11fea3583576b"};
 
 } // namespace render::shaders