1 files changed, 84 insertions, 0 deletions
diff --git a/archive/src/systems/grid.c b/archive/src/systems/grid.c
new file mode 100644
index 0000000..e907865
--- /dev/null
+++ b/archive/src/systems/grid.c
@@ -0,0 +1,84 @@
+#include "grid.h"
+#include "file.h"
+#include "log.h"
+#include "maths.h"
+#include "maths_types.h"
+#include "primitives.h"
+#include "ral_common.h"
+#include "ral_impl.h"
+#include "ral_types.h"
+#include "render.h"
+#include "render_types.h"
+#include "shader_layouts.h"
+
+void Grid_Init(Grid_Storage* storage) {
+  INFO("Infinite Grid initialisation");
+  Geometry plane_geo = Geo_CreatePlane(f32x2(1.0, 1.0), 1, 1);
+  Mesh plane_mesh = Mesh_Create(&plane_geo, true);
+  storage->plane_vertices = plane_mesh.vertex_buffer;
+
+  u32 indices[6] = { 5, 4, 3, 2, 1, 0 };
+  storage->plane_indices =
+      GPU_BufferCreate(6 * sizeof(u32), BUFFER_INDEX, BUFFER_FLAG_GPU, &indices);
+
+  GPU_RenderpassDesc rpass_desc = {
+    .default_framebuffer = true,
+  };
+  storage->renderpass = GPU_Renderpass_Create(rpass_desc);
+
+  arena scratch = arena_create(malloc(1024 * 1024), 1024 * 1024);
+
+  Str8 vert_path = str8("assets/shaders/grid.vert");
+  Str8 frag_path = str8("assets/shaders/grid.frag");
+  str8_opt vertex_shader = str8_from_file(&scratch, vert_path);
+  str8_opt fragment_shader = str8_from_file(&scratch, frag_path);
+  if (!vertex_shader.has_value || !fragment_shader.has_value) {
+    ERROR_EXIT("Failed to load shaders from disk")
+  }
+
+  ShaderDataLayout camera_data = Binding_Camera_GetLayout(NULL);
+
+  GraphicsPipelineDesc pipeline_desc = {
+    .debug_name = "Infinite grid pipeline",
+    .vertex_desc = static_3d_vertex_description(),
+    .data_layouts = { camera_data },
+    .data_layouts_count = 1,
+    .vs = {
+      .debug_name = "Grid vertex shader",
+      .filepath = vert_path,
+      .code = vertex_shader.contents,
+    },
+    .fs = {
+      .debug_name = "Grid fragment shader",
+      .filepath = frag_path,
+      .code = fragment_shader.contents,
+    },
+    .wireframe = false,
+  };
+  storage->pipeline = GPU_GraphicsPipeline_Create(pipeline_desc, storage->renderpass);
+}
+
+void Grid_Draw() {
+  Grid_Storage* grid = Render_GetGridStorage();
+  Grid_Execute(grid);
+}
+
+void Grid_Execute(Grid_Storage* storage) {
+  RenderScene* scene = Render_GetScene();
+  GPU_CmdEncoder* enc = GPU_GetDefaultEncoder();
+  GPU_CmdEncoder_BeginRender(enc, storage->renderpass);
+  GPU_EncodeBindPipeline(enc, storage->pipeline);
+  Mat4 view, proj;
+  u32x2 dimensions = GPU_Swapchain_GetDimensions();
+  Camera camera = scene->camera;
+  Camera_ViewProj(&camera, (f32)dimensions.x, (f32)dimensions.y, &view, &proj);
+  Binding_Camera camera_data = { .view = view,
+                                 .projection = proj,
+                                 .viewPos = vec4(camera.position.x, camera.position.y,
+                                                 camera.position.z, 1.0) };
+  GPU_EncodeBindShaderData(enc, 0, Binding_Camera_GetLayout(&camera_data));
+  GPU_EncodeSetVertexBuffer(enc, storage->plane_vertices);
+  GPU_EncodeSetIndexBuffer(enc, storage->plane_indices);
+  GPU_EncodeDrawIndexedTris(enc, 6);
+  GPU_CmdEncoder_EndRender(enc);
+}