starting work on immediate mode drawing

1 files changed, 28 insertions, 1 deletions

diff --git a/src/render/immdraw.h b/src/render/immdraw.h
index 0d58375..e635531 100644
--- a/src/render/immdraw.h
+++ b/src/render/immdraw.h
@@ -6,15 +6,21 @@
 #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;
-  GPU_Pipeline* colour_pipeline;
+  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);
@@ -24,4 +30,25 @@ PUB void Immdraw_Shutdown(Immdraw_Storage* storage);
 PUB void Immdraw_Plane(Transform tf, Vec4 colour, bool wireframe);
 PUB void Immdraw_Cuboid(Transform tf, Vec4 colour, bool wireframe);
 PUB void Immdraw_Sphere(Transform tf, f32 size, Vec4 colour, bool wireframe);
+
 PUB void Immdraw_TransformGizmo(Transform tf, f32 size);
+
+// --- Internal
+
+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};
+}