First Commit

bin/resources/shaders/vulkan/cas.glsl

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+#version 460 core
+#extension GL_EXT_samplerless_texture_functions : require
+
+// Based on CAS_Shader.glsl
+// Copyright(c) 2019 Advanced Micro Devices, Inc.All rights reserved.
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files(the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions :
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+layout(push_constant) uniform const_buffer
+{
+    uvec4 const0;
+    uvec4 const1;
+    ivec2 srcOffset;
+};
+
+layout(set=0, binding=0) uniform texture2D imgSrc;
+layout(set=0, binding=1, rgba8) uniform writeonly image2D imgDst;
+layout(constant_id=0) const int sharpenOnly = 0;
+
+#define A_GPU 1
+#define A_GLSL 1
+
+#include "ffx_a.h"
+
+AF3 CasLoad(ASU2 p)
+{
+    return texelFetch(imgSrc, srcOffset + ivec2(p), 0).rgb;
+}
+
+// Lets you transform input from the load into a linear color space between 0 and 1. See ffx_cas.h
+// In this case, our input is already linear and between 0 and 1
+void CasInput(inout AF1 r, inout AF1 g, inout AF1 b) {}
+
+#include "ffx_cas.h"
+
+layout(local_size_x=64) in;
+void main()
+{
+    // Do remapping of local xy in workgroup for a more PS-like swizzle pattern.
+    AU2 gxy = ARmp8x8(gl_LocalInvocationID.x)+AU2(gl_WorkGroupID.x<<4u,gl_WorkGroupID.y<<4u);
+
+    // Filter.
+    AF4 c = vec4(0.0f);
+    CasFilter(c.r, c.g, c.b, gxy, const0, const1, sharpenOnly != 0);
+    imageStore(imgDst, ASU2(gxy), c);
+    gxy.x += 8u;
+
+    CasFilter(c.r, c.g, c.b, gxy, const0, const1, sharpenOnly != 0);
+    imageStore(imgDst, ASU2(gxy), c);
+    gxy.y += 8u;
+
+    CasFilter(c.r, c.g, c.b, gxy, const0, const1, sharpenOnly != 0);
+    imageStore(imgDst, ASU2(gxy), c);
+    gxy.x -= 8u;
+
+    CasFilter(c.r, c.g, c.b, gxy, const0, const1, sharpenOnly != 0);
+    imageStore(imgDst, ASU2(gxy), c);
+}