Ajout de Jolt Physics + 1ere version des factory entitecomposants - camera, transform, rigidbody, collider, renderer

lib/All/JoltPhysics/Assets/Shaders/MTL/FontShader.metal

@@ -0,0 +1,39 @@
+#include <metal_stdlib>
+
+using namespace metal;
+
+#include "VertexConstants.h"
+
+constexpr sampler alphaTextureSampler(mag_filter::linear, min_filter::linear);
+
+struct FontVertex
+{
+	float3		vPos [[attribute(0)]];
+	float2		vTex [[attribute(1)]];
+	uchar4		vCol [[attribute(2)]];
+};
+
+struct FontOut
+{
+    float4 		oPosition [[position]];
+    float2 		oTex;
+    float4 		oColor;
+};
+
+vertex FontOut FontVertexShader(FontVertex vert [[stage_in]], constant VertexShaderConstantBuffer *constants [[buffer(2)]])
+{
+    FontOut out;
+    out.oPosition = constants->Projection * constants->View * float4(vert.vPos, 1.0);
+    out.oTex = vert.vTex;
+    out.oColor = float4(vert.vCol) / 255.0;
+    return out;
+}
+
+fragment float4 FontPixelShader(FontOut in [[stage_in]], texture2d<float> alphaTexture [[texture(0)]])
+{
+	const float4 sample = alphaTexture.sample(alphaTextureSampler, in.oTex);
+	if (sample.x < 0.5)
+		discard_fragment();
+
+    return float4(in.oColor.xyz, sample.x);
+}