remove dead shader code

Author: devshgraphicsprogramming

include/nbl/builtin/glsl/ext/FFT/default_compute_fft.comp

@@ -1,7 +1,3 @@
-#ifndef USE_SSBO_FOR_INPUT
-#error "USE_SSBO_FOR_INPUT should be defined."
-#endif
-
 #ifndef _NBL_GLSL_WORKGROUP_SIZE_
 #define _NBL_GLSL_WORKGROUP_SIZE_ 256
 #endif
@@ -26,14 +22,11 @@ layout(local_size_x=_NBL_GLSL_WORKGROUP_SIZE_, local_size_y=1, local_size_z=1) i
 #ifndef _NBL_GLSL_EXT_FFT_INPUT_DESCRIPTOR_DEFINED_
 #define _NBL_GLSL_EXT_FFT_INPUT_DESCRIPTOR_DEFINED_
 
-#if USE_SSBO_FOR_INPUT > 0
+
 layout(set=_NBL_GLSL_EXT_FFT_INPUT_SET_DEFINED_, binding=_NBL_GLSL_EXT_FFT_INPUT_BINDING_DEFINED_) readonly restrict buffer InputBuffer
 {
 	nbl_glsl_complex inData[];
 };
-#else 
-layout(set=_NBL_GLSL_EXT_FFT_INPUT_SET_DEFINED_, binding=_NBL_GLSL_EXT_FFT_INPUT_BINDING_DEFINED_) uniform sampler2D inputImage;
-#endif
 
 #endif
 
@@ -71,16 +64,9 @@ layout(push_constant) uniform PushConstants
 nbl_glsl_complex nbl_glsl_ext_FFT_getData(in uvec3 coordinate, in uint channel)
 {
 	nbl_glsl_complex retValue = nbl_glsl_complex(0, 0);
-#if USE_SSBO_FOR_INPUT > 0
 	uvec3 dimension = nbl_glsl_ext_FFT_Parameters_t_getDimensions();
 	uint index = channel * (dimension.x * dimension.y * dimension.z) + coordinate.z * (dimension.x * dimension.y) + coordinate.y * (dimension.x) + coordinate.x;
 	retValue = inData[index];
-#else
-	ivec2 inputImageSize = textureSize(inputImage, 0);
-	vec2 normalizedCoords = (vec2(coordinate.xy) + vec2(0.5f)) / vec2(inputImageSize);
-	vec4 texelValue= textureLod(inputImage, normalizedCoords, 0);
-	retValue = nbl_glsl_complex(texelValue[channel], 0.0f);
-#endif
 	return retValue;
 }
 
@@ -93,7 +79,6 @@ void nbl_glsl_ext_FFT_setData(in uvec3 coordinate, in uint channel, in nbl_glsl_
 
 nbl_glsl_complex nbl_glsl_ext_FFT_getPaddedData(in uvec3 coordinate, in uint channel) 
 {
-#if USE_SSBO_FOR_INPUT > 0
 	uvec3 max_coord = nbl_glsl_ext_FFT_Parameters_t_getDimensions() - uvec3(1u);
 	uvec3 clamped_coord = min(coordinate, max_coord);
 
@@ -106,16 +91,11 @@ nbl_glsl_complex nbl_glsl_ext_FFT_getPaddedData(in uvec3 coordinate, in uint cha
 	}
 
 	return nbl_glsl_ext_FFT_getData(clamped_coord, channel);
-#else
-	return nbl_glsl_ext_FFT_getData(coordinate, channel);
-#endif
 }
 
 void main()
 {
     const uint numChannels = nbl_glsl_ext_FFT_Parameters_t_getNumChannels();
 	for(uint ch = 0u; ch < numChannels; ++ch)
-	{
 		nbl_glsl_ext_FFT(nbl_glsl_ext_FFT_Parameters_t_getIsInverse(), ch);
-	}
 }

src/nbl/ext/FFT/FFT.cpp

@@ -68,7 +68,6 @@ core::smart_refctd_ptr<video::IGPUComputePipeline> FFT::getDefaultPipeline(video
 	const char* sourceFmt =
 R"===(#version 430 core
 
-#define USE_SSBO_FOR_INPUT 1
 #define _NBL_GLSL_WORKGROUP_SIZE_ %u
 #define _NBL_GLSL_EXT_FFT_MAX_DIM_SIZE_ %u