added uniform buffers, small tweaks

- fixed aspect ratio being the inverse of what it's supposed to be
- use std::chrono::high_resolution_clock instead of system_clock
- convert ellapsed time to float representing seconds
- renamed engine::math::Matrix4::projection to perspective
- use [0,1] instead of [-1,1] for the range of z values, to be aligned
  with vulkan
- added engine::math::Matrix4::{look_at,transpose}

1 files changed, 8 insertions, 1 deletions

diff --git a/src/shaders/shader.slang b/src/shaders/shader.slang
index 37041c6..24d9946 100644
--- a/src/shaders/shader.slang
+++ b/src/shaders/shader.slang
@@ -3,6 +3,12 @@ struct VertexInput {
     float3 col;
 };
 
+struct UniformBuffer {
+    float4x4 model, view, proj;
+};
+
+ConstantBuffer<UniformBuffer> ubo;
+
 struct VertexOutput {
     float4 pos : SV_Position;
     float3 col;
@@ -11,7 +17,8 @@ struct VertexOutput {
 [shader("vertex")]
 VertexOutput vert_main(VertexInput vi) {
     VertexOutput vo;
-    vo.pos = float4(vi.pos, 0., 1.);
+    // vo.pos = float4(vi.pos, 0., 1.);
+    vo.pos = mul(ubo.proj, mul(ubo.view, mul(ubo.model, float4(vi.pos, 0., 1.))));
     vo.col = vi.col;
     return vo;
 }