test(3d): Add procedural grid to floor and enable texturing

- Modified 'test_3d_render' to generate and use a procedural 'grid' texture for the floor.
- Updated fragment shader to sample the texture for rasterized objects, adding a grid pattern to the floor.
- This provides visual detail and contrast, making raymarched shadows much easier to observe and verify.

1 files changed, 7 insertions, 7 deletions

diff --git a/src/tests/test_3d_render.cc b/src/tests/test_3d_render.cc
index fbf5fc0..71cc862 100644
--- a/src/tests/test_3d_render.cc
+++ b/src/tests/test_3d_render.cc
@@ -206,14 +206,14 @@ int main(int argc, char** argv) {
   g_renderer.resize(platform_state.width, platform_state.height);
 
   g_textures.init(g_device, g_queue);
-  ProceduralTextureDef noise_def;
-  noise_def.width = 256;
-  noise_def.height = 256;
-  noise_def.gen_func = gen_periodic_noise;
-  noise_def.params = {1234.0f, 16.0f};
-  g_textures.create_procedural_texture("noise", noise_def);
+  ProceduralTextureDef grid_def;
+  grid_def.width = 256;
+  grid_def.height = 256;
+  grid_def.gen_func = procedural::gen_grid;
+  grid_def.params = {10.0f, 1.0f}; // Frequency, thickness
+  g_textures.create_procedural_texture("floor_grid", grid_def);
 
-  g_renderer.set_noise_texture(g_textures.get_texture_view("noise"));
+  g_renderer.set_noise_texture(g_textures.get_texture_view("floor_grid"));
 
   setup_scene();