add empty grid system

1 files changed, 59 insertions, 0 deletions

diff --git a/src/systems/grid.c b/src/systems/grid.c
new file mode 100644
index 0000000..20e3657
--- /dev/null
+++ b/src/systems/grid.c
@@ -0,0 +1,59 @@
+#include "grid.h"
+#include "file.h"
+#include "log.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));
+  Mesh plane_mesh = Mesh_Create(&plane_geo, true);
+  storage->plane_vertices = plane_mesh.vertex_buffer;
+  storage->plane_indices = plane_mesh.index_buffer;
+
+  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")
+  }
+
+  ShaderData camera_data = { .get_layout = &Binding_Camera_GetLayout };
+
+  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* storage) {
+
+}
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