brought back functionality from previous builds but now cross-platform

funnyassets/gfx_shaders/mesh_vert.slang

@@ -1,3 +1,4 @@
+#include "shader_base.h"
 #include "mesh_shared.slang"
 
 struct VertexInput
@@ -6,20 +7,13 @@ struct VertexInput
 	float2 uv: TEXCOORD0;
 };
 
-[[vk::binding(0)]]
-cbuffer CameraInfo
-{
-	float4x4 projection;
-};
-
 [shader("vertex")]
-VertexOutput main(
+VertexOutput _main(
 	VertexInput input,
-	uniform PushConstants constants,
 )
 {
 	VertexOutput output;
-	output.position = mul(projection, mul(constants.modelMatrix, float4(input.position,1)));
+	output.position = mul(projection, mul(modelMatrix, float4(input.position,1)));
 	output.uv = input.uv;
 	return output;
 }