start working on a immediate mode drawing API

1 files changed, 28 insertions, 0 deletions

diff --git a/assets/shaders/pbr_textured.vert b/assets/shaders/pbr_textured.vert
new file mode 100644
index 0000000..40a6f29
--- /dev/null
+++ b/assets/shaders/pbr_textured.vert
@@ -0,0 +1,28 @@
+#version 410 core
+
+// Vertex attributes
+layout(location = 0) in vec3 inPosition;
+layout(location = 1) in vec3 inNormal;
+layout(location = 2) in vec2 inTexCoords;
+
+// Uniforms
+uniform MVP_Matrices {
+  mat4 model; // TODO: make model a push constant/raw uniform
+  mat4 view;
+  mat4 proj;
+} mvp;
+
+// Outputs
+layout(location = 0) out vec3 fragWorldPos;
+layout(location = 1) out vec3 fragNormal;
+layout(location = 2) out vec2 fragTexCoords;
+
+void main() {
+  fragWorldPos = vec3(mvp.model * vec4(inPosition, 1.0));
+  fragNormal = mat3(transpose(inverse(mvp.model))) * inNormal;  
+  // fragNormal = inNormal;
+  
+  fragTexCoords = inTexCoords;
+
+  gl_Position =  mvp.proj * mvp.view * mvp.model * vec4(inPosition, 1.0);
+}