initial commit, 4.5 stable

thirdparty/amd-fsr2/shaders/ffx_fsr2_autogen_reactive_pass.glsl

@@ -0,0 +1,93 @@
+// This file is part of the FidelityFX SDK.
+//
+// Copyright (c) 2022-2023 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.
+
+//#version 450
+
+#extension GL_GOOGLE_include_directive : require
+#extension GL_EXT_samplerless_texture_functions : require
+
+#define FSR2_BIND_SRV_INPUT_OPAQUE_ONLY                     0
+#define FSR2_BIND_SRV_INPUT_COLOR                           1
+#define FSR2_BIND_UAV_AUTOREACTIVE                          2
+#define FSR2_BIND_CB_REACTIVE                               3
+#define FSR2_BIND_CB_FSR2                                   4
+
+#include "ffx_fsr2_callbacks_glsl.h"
+#include "ffx_fsr2_common.h"
+
+// layout (set = 1, binding = FSR2_BIND_SRV_PRE_ALPHA_COLOR)  uniform texture2D   r_input_color_pre_alpha;
+// layout (set = 1, binding = FSR2_BIND_SRV_POST_ALPHA_COLOR) uniform texture2D   r_input_color_post_alpha;
+// layout (set = 1, binding = FSR2_BIND_UAV_REACTIVE, r8)     uniform image2D     rw_output_reactive_mask;
+
+
+#ifndef FFX_FSR2_THREAD_GROUP_WIDTH
+#define FFX_FSR2_THREAD_GROUP_WIDTH 8
+#endif // #ifndef FFX_FSR2_THREAD_GROUP_WIDTH
+#ifndef FFX_FSR2_THREAD_GROUP_HEIGHT
+#define FFX_FSR2_THREAD_GROUP_HEIGHT 8
+#endif // FFX_FSR2_THREAD_GROUP_HEIGHT
+#ifndef FFX_FSR2_THREAD_GROUP_DEPTH
+#define FFX_FSR2_THREAD_GROUP_DEPTH 1
+#endif // #ifndef FFX_FSR2_THREAD_GROUP_DEPTH
+#ifndef FFX_FSR2_NUM_THREADS
+#define FFX_FSR2_NUM_THREADS layout (local_size_x = FFX_FSR2_THREAD_GROUP_WIDTH, local_size_y = FFX_FSR2_THREAD_GROUP_HEIGHT, local_size_z = FFX_FSR2_THREAD_GROUP_DEPTH) in;
+#endif // #ifndef FFX_FSR2_NUM_THREADS
+
+#if defined(FSR2_BIND_CB_REACTIVE)
+layout (set = 1, binding = FSR2_BIND_CB_REACTIVE, std140) uniform cbGenerateReactive_t
+{
+	float   scale;
+	float   threshold;
+	float   binaryValue;
+	uint    flags;
+} cbGenerateReactive;
+#endif
+
+FFX_FSR2_NUM_THREADS
+void main()
+{
+    FfxUInt32x2 uDispatchThreadId = gl_GlobalInvocationID.xy;
+
+    FfxFloat32x3 ColorPreAlpha  = LoadOpaqueOnly(FFX_MIN16_I2(uDispatchThreadId)).rgb;
+    FfxFloat32x3 ColorPostAlpha = LoadInputColor(FFX_MIN16_I2(uDispatchThreadId)).rgb;
+    
+    if ((cbGenerateReactive.flags & FFX_FSR2_AUTOREACTIVEFLAGS_APPLY_TONEMAP) != 0)
+    {
+        ColorPreAlpha = Tonemap(ColorPreAlpha);
+        ColorPostAlpha = Tonemap(ColorPostAlpha);
+    }
+
+    if ((cbGenerateReactive.flags & FFX_FSR2_AUTOREACTIVEFLAGS_APPLY_INVERSETONEMAP) != 0)
+    {
+        ColorPreAlpha = InverseTonemap(ColorPreAlpha);
+        ColorPostAlpha = InverseTonemap(ColorPostAlpha);
+    }
+
+    FfxFloat32 out_reactive_value = 0.f;
+    FfxFloat32x3 delta = abs(ColorPostAlpha - ColorPreAlpha);
+    
+    out_reactive_value = ((cbGenerateReactive.flags & FFX_FSR2_AUTOREACTIVEFLAGS_USE_COMPONENTS_MAX)!=0) ? max(delta.x, max(delta.y, delta.z)) : length(delta);
+    out_reactive_value *= cbGenerateReactive.scale;
+
+    out_reactive_value = ((cbGenerateReactive.flags & FFX_FSR2_AUTOREACTIVEFLAGS_APPLY_THRESHOLD)!=0) ? ((out_reactive_value < cbGenerateReactive.threshold) ? 0 : cbGenerateReactive.binaryValue) : out_reactive_value;
+
+    imageStore(rw_output_autoreactive, FfxInt32x2(uDispatchThreadId), vec4(out_reactive_value));
+}