improving the way I load animation data and store it. Load -> Tick(Armature*) -> RenderEnt.Armature -> matrix shenanigans

1 files changed, 19 insertions, 3 deletions

diff --git a/src/render/pbr.c b/src/render/pbr.c
index 044e6eb..6ea5746 100644
--- a/src/render/pbr.c
+++ b/src/render/pbr.c
@@ -13,6 +13,7 @@
 #include "render_types.h"
 #include "shader_layouts.h"
 
+
 void PBR_Init(PBR_Storage* storage) {
   INFO("PBR shaders init");
   storage->pbr_pass = PBR_RPassCreate();
@@ -144,12 +145,27 @@ void PBR_Execute(PBR_Storage* storage, Camera camera, TextureHandle shadowmap_te
     Binding_Model model_data = { .model = renderable.affine };
     GPU_EncodeBindShaderData(enc, 1, Binding_Model_GetLayout(&model_data));
 
+    // Skinning matrices
+
+    // 1. calculate matrices
     AnimDataUniform anim_data = { 0 };
-    for (int i = 0; i < 4; i++) {
-      anim_data.bone_matrices[i] = mat4_ident();
+    CASSERT(renderable.armature);
+    Armature* skeleton = renderable.armature;
+    // Skip the first one as we assume its root for this test
+    for (int j_i = 1; j_i < skeleton->joints->len; j_i++) {
+        Joint* j = &skeleton->joints->data[j_i];
+        j->local_transform = transform_to_mat(&j->transform_components);
+        Mat4 m = mat4_mult(j->local_transform, j->inverse_bind_matrix);
+        Joint* p = &skeleton->joints->data[j->parent];
+        j->local_transform = mat4_mult(j->local_transform, p->local_transform);
+        printf("Quat %f \n", j->transform_components.rotation.z);
+    }
+
+    // 2. bind and upload
+    for (int j_i = 1; j_i < skeleton->joints->len; j_i++) {
+      anim_data.bone_matrices[j_i] = skeleton->joints->data[j_i].local_transform;
     }
     GPU_EncodeBindShaderData(enc, 3, AnimData_GetLayout(&anim_data));
-    // Calculate matrices here
 
     // set buffers
     GPU_EncodeSetVertexBuffer(enc, mesh->vertex_buffer);