1 files changed, 63 insertions, 0 deletions
diff --git a/archive/src/render/immdraw.h b/archive/src/render/immdraw.h
new file mode 100644
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--- /dev/null
+++ b/archive/src/render/immdraw.h
@@ -0,0 +1,63 @@
+/**
+ * @brief Immediate-mode drawing APIs
+ */
+
+#pragma once
+#include "defines.h"
+#include "maths_types.h"
+#include "ral_impl.h"
+#include "ral_types.h"
+#include "render_types.h"
+
+typedef struct Immdraw_Storage {
+  Mesh plane;
+  Mesh cube;
+  Mesh sphere;
+  Mesh cylinder;
+  Mesh cone;
+  Mesh bbox;
+  GPU_Pipeline* colour_pipeline; /** @brief Pipeline for drawing geometry that has vertex colours */
+} Immdraw_Storage;
+
+typedef struct ImmediateUniforms {
+  Mat4 model;
+  Vec4 colour;
+} ImmediateUniforms;
+
+// --- Public API
+
+PUB void Immdraw_Init(Immdraw_Storage* storage);
+PUB void Immdraw_Shutdown(Immdraw_Storage* storage);
+
+// These functions cause a pipeline switch and so aren't optimised for performance
+PUB void Immdraw_Plane(Transform tf, Vec4 colour, bool wireframe);
+PUB void Immdraw_Cuboid(Transform tf, Vec4 colour, bool wireframe);
+PUB void Immdraw_Cylinder(Transform tf, Vec4 colour, bool wireframe);
+PUB void Immdraw_Cone(Transform tf, Vec4 colour, bool wireframe);
+PUB void Immdraw_Sphere(Transform tf, Vec4 colour, bool wireframe);
+PUB void Immdraw_Bbox(Transform tf, Vec4 colour, bool wireframe);
+
+PUB void Immdraw_TransformGizmo(Transform tf, f32 size);
+
+// --- Internal
+
+void Immdraw_Primitive(Transform tf, PrimitiveTopology topology, f32 size, Vec4 colour,
+                       bool wireframe, Mesh mesh);
+
+Mesh GenBboxMesh();
+
+static ShaderDataLayout ImmediateUniforms_GetLayout(void* data) {
+  ImmediateUniforms* d = (ImmediateUniforms*)data;
+  bool has_data = data != NULL;
+
+  ShaderBinding b1 = { .label = "ImmUniforms",
+                       .kind = BINDING_BYTES,
+                       // .vis = VISIBILITY_VERTEX,
+                       .data.bytes.size = sizeof(ImmediateUniforms) };
+
+  if (has_data) {
+    b1.data.bytes.data = d;
+  }
+
+  return (ShaderDataLayout){ .bindings = { b1 }, .binding_count = 1 };
+}