add tonemapping shaders

shader/r_composition.frag

@@ -0,0 +1,55 @@
+#version 460 core
+/**
+ * Copyright (c) 2018-2020 www.hyzgame.com
+ *
+ * Create by ShaderMaker
+ */
+layout(push_constant) uniform Consts
+{
+    mat4 local_to_world;
+    mat3 normal;
+    vec3 object_position;
+    vec3 object_size;
+} pc;
+layout(binding = 0) uniform WorldMatrix     // hgl/math/Math.h
+{
+    mat4 ortho;
+
+    mat4 projection;
+    mat4 inverse_projection;
+
+    mat4 modelview;
+    mat4 inverse_modelview;
+
+    mat4 mvp;
+    mat4 inverse_mvp;
+
+    vec4 view_pos;
+} world;
+
+layout(binding=0) uniform sampler2D rb_depth;
+layout(binding=1) uniform sampler2D gb_color_metallic;
+layout(binding=2) uniform sampler2D gb_normal_roughness;
+
+layout(location=0) in vec2 vs_out_position;
+layout(location=0) out vec4 FragColor;
+
+void main()
+{
+    vec3 BaseColor;
+    vec3 Normal;
+    float Metallic;
+    float Roughness;
+
+    vec4 gb_cm=texture(gb_color_metallic,FragmentPosition);
+    vec4 gb_cr=texture(gb_normal_roughness,FragmentPosition);
+    BaseColor =gb_cm.rgb;
+    Metallic  =gb_cm.a;
+    Normal    =gb_cr.rgb;
+    Roughness =gb_cr.a;
+
+//[Begin] Your code------------------------------------
+
+//[End] Your code--------------------------------------
+    FragColor=
+}