Added type definitions for PSSL (PS4/5) and removed hard-coded FFMX_HALF defines. Let the multi-compile shaders and C# code control that.

Packages/com.unity.postprocessing@3.2.2/PostProcessing/Runtime/Effects/Upscaling/ASR/Shaders/shaders/ffxm_common_types.h

@@ -240,11 +240,6 @@ typedef int4        FfxInt32x4;
 
 #endif // #if defined(FFXM_HLSL_6_2)
 
-// Arm ASR relies in efficient FP16 arithmetic.
-#if !defined(FFXM_HALF)
-#define FFXM_HALF (1)
-#endif
-
 #if FFXM_HALF
 
 #if FFXM_HLSL_6_2
@@ -269,6 +264,29 @@ typedef int16_t     FfxInt16;
 typedef int16_t2    FfxInt16x2;
 typedef int16_t3    FfxInt16x3;
 typedef int16_t4    FfxInt16x4;
+#elif SHADER_API_PSSL
+#pragma argument(realtypes)     // Enable true 16-bit types
+
+typedef half        FfxFloat16;
+typedef half2       FfxFloat16x2;
+typedef half3       FfxFloat16x3;
+typedef half4       FfxFloat16x4;
+
+/// A typedef for an unsigned 16bit integer.
+///
+/// @ingroup GPU
+typedef ushort      FfxUInt16;
+typedef ushort2     FfxUInt16x2;
+typedef ushort3     FfxUInt16x3;
+typedef ushort4     FfxUInt16x4;
+
+/// A typedef for a signed 16bit integer.
+///
+/// @ingroup GPU
+typedef short       FfxInt16;
+typedef short2      FfxInt16x2;
+typedef short3      FfxInt16x3;
+typedef short4      FfxInt16x4;
 #else // #if FFXM_HLSL_6_2
 typedef min16float  FfxFloat16;
 typedef min16float2 FfxFloat16x2;
@@ -340,7 +358,7 @@ typedef min16int4   FfxInt16x4;
 #endif // #if defined(FFXM_GLSL)
 
 
-#if FFXM_HALF
+#if FFXM_HALF && !defined(SHADER_API_PSSL)
 
 #if FFXM_HLSL_6_2
 
@@ -378,7 +396,7 @@ typedef min16int4   FfxInt16x4;
 
 #if defined(FFXM_GPU)
 // Common typedefs:
-#if defined(FFXM_HLSL)
+#if defined(FFXM_HLSL) && !defined(SHADER_API_PSSL)
 FFXM_MIN16_SCALAR( FFXM_MIN16_F , float );
 FFXM_MIN16_VECTOR( FFXM_MIN16_F2, float, 2 );
 FFXM_MIN16_VECTOR( FFXM_MIN16_F3, float, 3 );
@@ -452,6 +470,79 @@ typedef FfxUInt32x3     Prefix##_U3;          \
 typedef FfxUInt32x4     Prefix##_U4;
 #endif // #if defined(FFXM_HLSL)
 
+#if defined(SHADER_API_PSSL)
+
+#define unorm
+#define globallycoherent
+
+#if FFX_HALF
+
+#define  FFXM_MIN16_F  half
+#define  FFXM_MIN16_F2 half2
+#define  FFXM_MIN16_F3 half3
+#define  FFXM_MIN16_F4 half4
+
+#define  FFXM_MIN16_I  short
+#define  FFXM_MIN16_I2 short2
+#define  FFXM_MIN16_I3 short3
+#define  FFXM_MIN16_I4 short4
+
+#define  FFXM_MIN16_U  ushort
+#define  FFXM_MIN16_U2 ushort2
+#define  FFXM_MIN16_U3 ushort3
+#define  FFXM_MIN16_U4 ushort4
+
+#define FFXM_16BIT_F  half
+#define FFXM_16BIT_F2 half2
+#define FFXM_16BIT_F3 half3
+#define FFXM_16BIT_F4 half4
+
+#define FFXM_16BIT_I  short
+#define FFXM_16BIT_I2 short2
+#define FFXM_16BIT_I3 short3
+#define FFXM_16BIT_I4 short4
+
+#define FFXM_16BIT_U  ushort
+#define FFXM_16BIT_U2 ushort2
+#define FFXM_16BIT_U3 ushort3
+#define FFXM_16BIT_U4 ushort4
+
+#else // FFX_HALF
+
+#define  FFXM_MIN16_F  float
+#define  FFXM_MIN16_F2 float2
+#define  FFXM_MIN16_F3 float3
+#define  FFXM_MIN16_F4 float4
+
+#define  FFXM_MIN16_I  int
+#define  FFXM_MIN16_I2 int2
+#define  FFXM_MIN16_I3 int3
+#define  FFXM_MIN16_I4 int4
+
+#define  FFXM_MIN16_U  uint
+#define  FFXM_MIN16_U2 uint2
+#define  FFXM_MIN16_U3 uint3
+#define  FFXM_MIN16_U4 uint4
+
+#define FFXM_16BIT_F  float
+#define FFXM_16BIT_F2 float2
+#define FFXM_16BIT_F3 float3
+#define FFXM_16BIT_F4 float4
+
+#define FFXM_16BIT_I  int
+#define FFXM_16BIT_I2 int2
+#define FFXM_16BIT_I3 int3
+#define FFXM_16BIT_I4 int4
+
+#define FFXM_16BIT_U  uint
+#define FFXM_16BIT_U2 uint2
+#define FFXM_16BIT_U3 uint3
+#define FFXM_16BIT_U4 uint4
+
+#endif // FFX_HALF
+
+#endif  // #if defined(SHADER_API_PSSL)
+
 #if defined(FFXM_GLSL)
 
 #if FFXM_HALF

Packages/com.unity.postprocessing@3.2.2/PostProcessing/Runtime/Effects/Upscaling/ASR/Shaders/shaders/ffxm_fsr2_accumulate_pass_fs.hlsl

@@ -41,9 +41,6 @@
 #define FSR2_BIND_CB_FSR2                                    0
 
 // Global mandatory defines
-#if !defined(FFXM_HALF)
-#define FFXM_HALF 1
-#endif
 #if !defined(FFXM_GPU)
 #define FFXM_GPU 1
 #endif

Packages/com.unity.postprocessing@3.2.2/PostProcessing/Runtime/Effects/Upscaling/ASR/Shaders/shaders/ffxm_fsr2_autogen_reactive_pass_fs.hlsl

@@ -26,9 +26,6 @@
 #define FSR2_BIND_CB_REACTIVE                               1
 
 // Global mandatory defines
-#if !defined(FFXM_HALF)
-#define FFXM_HALF 1
-#endif
 #if !defined(FFXM_GPU)
 #define FFXM_GPU 1
 #endif

Packages/com.unity.postprocessing@3.2.2/PostProcessing/Runtime/Effects/Upscaling/ASR/Shaders/shaders/ffxm_fsr2_compute_luminance_pyramid_pass.hlsl

@@ -30,9 +30,6 @@
 #define FSR2_BIND_CB_SPD                              1
 
 // Global mandatory defines
-#if !defined(FFXM_HALF)
-#define FFXM_HALF 1
-#endif
 #if !defined(FFXM_GPU)
 #define FFXM_GPU 1
 #endif

Packages/com.unity.postprocessing@3.2.2/PostProcessing/Runtime/Effects/Upscaling/ASR/Shaders/shaders/ffxm_fsr2_depth_clip_pass_fs.hlsl

@@ -33,9 +33,6 @@
 #define FSR2_BIND_CB_FSR2                                   0
 
 // Global mandatory defines
-#if !defined(FFXM_HALF)
-#define FFXM_HALF 1
-#endif
 #if !defined(FFXM_GPU)
 #define FFXM_GPU 1
 #endif

Packages/com.unity.postprocessing@3.2.2/PostProcessing/Runtime/Effects/Upscaling/ASR/Shaders/shaders/ffxm_fsr2_lock_pass.hlsl

@@ -27,9 +27,6 @@
 #define FSR2_BIND_CB_FSR2                                   0
 
 // Global mandatory defines
-#if !defined(FFXM_HALF)
-#define FFXM_HALF 1
-#endif
 #if !defined(FFXM_GPU)
 #define FFXM_GPU 1
 #endif

Packages/com.unity.postprocessing@3.2.2/PostProcessing/Runtime/Effects/Upscaling/ASR/Shaders/shaders/ffxm_fsr2_rcas_pass_fs.hlsl

@@ -26,9 +26,6 @@
 #define FSR2_BIND_CB_RCAS                   1
 
 // Global mandatory defines
-#if !defined(FFXM_HALF)
-#define FFXM_HALF 1
-#endif
 #if !defined(FFXM_GPU)
 #define FFXM_GPU 1
 #endif

Packages/com.unity.postprocessing@3.2.2/PostProcessing/Runtime/Effects/Upscaling/ASR/Shaders/shaders/ffxm_fsr2_reconstruct_previous_depth_pass_fs.hlsl

@@ -29,9 +29,6 @@
 #define FSR2_BIND_CB_FSR2                                   0
 
 // Global mandatory defines
-#if !defined(FFXM_HALF)
-#define FFXM_HALF 1
-#endif
 #if !defined(FFXM_GPU)
 #define FFXM_GPU 1
 #endif

Packages/com.unity.postprocessing@3.2.2/PostProcessing/Runtime/Effects/Upscaling/ASR/Shaders/shaders/ffxm_fsr2_vs.hlsl

@@ -20,9 +20,6 @@
 // SOFTWARE.
 
 // Global mandatory defines
-#if !defined(FFXM_HALF)
-#define FFXM_HALF 1
-#endif
 #if !defined(FFXM_GPU)
 #define FFXM_GPU 1
 #endif