Cleanup: GPU: Avoid glsl functions with only one void argument

source/blender/draw/engines/eevee_next/shaders/eevee_subsurface_convolve_comp.glsl

@@ -78,7 +78,7 @@ SubSurfaceSample sample_neighborhood(vec2 sample_uv)
   return samp;
 }
 
-void main(void)
+void main()
 {
   const uint tile_size = SUBSURFACE_GROUP_SIZE;
   uvec2 tile_coord = unpackUvec2x16(tiles_coord_buf[gl_WorkGroupID.x]);

source/blender/draw/engines/eevee_next/shaders/eevee_subsurface_setup_comp.glsl

@@ -14,7 +14,7 @@
 
 shared uint has_visible_sss;
 
-void main(void)
+void main()
 {
   ivec2 texel = ivec2(gl_GlobalInvocationID.xy);
 

source/blender/draw/engines/gpencil/shaders/gpencil_frag.glsl

@@ -14,7 +14,7 @@ float length_squared(vec3 v)
   return dot(v, v);
 }
 
-vec3 gpencil_lighting(void)
+vec3 gpencil_lighting()
 {
   vec3 light_accum = vec3(0.0);
   for (int i = 0; i < GPENCIL_LIGHT_BUFFER_LEN; i++) {

source/blender/draw/engines/overlay/shaders/overlay_armature_shape_outline_geom.glsl

@@ -4,7 +4,7 @@
 
 #include "common_view_clipping_lib.glsl"
 
-void main(void)
+void main()
 {
   finalColor = vec4(geom_in[0].vColSize.rgb, 1.0);
 

source/blender/draw/engines/overlay/shaders/overlay_background_frag.glsl

@@ -7,7 +7,7 @@
 /* 4x4 bayer matrix prepared for 8bit UNORM precision error. */
 #define P(x) (((x + 0.5) * (1.0 / 16.0) - 0.5) * (1.0 / 255.0))
 
-float dither(void)
+float dither()
 {
   /* NOTE(Metal): Declaring constant array in function scope to avoid increasing local shader
    * memory pressure. */

source/blender/draw/engines/overlay/shaders/overlay_motion_path_line_geom.glsl

@@ -12,7 +12,7 @@ vec2 compute_dir(vec2 v0, vec2 v1)
   return dir;
 }
 
-void main(void)
+void main()
 {
   vec2 t;
   vec2 edge_dir = compute_dir(interp_flat[0].ss_pos, interp_flat[1].ss_pos) * sizeViewportInv;

source/blender/draw/engines/overlay/shaders/overlay_outline_prepass_curves_vert.glsl

@@ -7,7 +7,7 @@
 #include "common_view_lib.glsl"
 #include "gpu_shader_utildefines_lib.glsl"
 
-uint outline_colorid_get(void)
+uint outline_colorid_get()
 {
 #ifdef OBINFO_NEW
   eObjectInfoFlag ob_flag = eObjectInfoFlag(floatBitsToUint(drw_infos[resource_id].infos.w));

source/blender/draw/engines/overlay/shaders/overlay_outline_prepass_gpencil_vert.glsl

@@ -6,7 +6,7 @@
 #include "common_view_clipping_lib.glsl"
 #include "common_view_lib.glsl"
 
-uint outline_colorid_get(void)
+uint outline_colorid_get()
 {
 #ifdef OBINFO_NEW
   eObjectInfoFlag ob_flag = eObjectInfoFlag(floatBitsToUint(drw_infos[resource_id].infos.w));

source/blender/draw/engines/overlay/shaders/overlay_outline_prepass_pointcloud_vert.glsl

@@ -7,7 +7,7 @@
 #include "common_view_lib.glsl"
 #include "gpu_shader_utildefines_lib.glsl"
 
-uint outline_colorid_get(void)
+uint outline_colorid_get()
 {
 #ifdef OBINFO_NEW
   eObjectInfoFlag ob_flag = eObjectInfoFlag(floatBitsToUint(drw_infos[resource_id].infos.w));

source/blender/draw/engines/overlay/shaders/overlay_outline_prepass_vert.glsl

@@ -6,7 +6,7 @@
 #include "common_view_lib.glsl"
 #include "gpu_shader_utildefines_lib.glsl"
 
-uint outline_colorid_get(void)
+uint outline_colorid_get()
 {
 #ifdef OBINFO_NEW
   eObjectInfoFlag ob_flag = eObjectInfoFlag(floatBitsToUint(drw_infos[resource_id].infos.w));

source/blender/draw/engines/overlay/shaders/overlay_outline_prepass_vert_no_geom.glsl

@@ -11,7 +11,7 @@
   gl_Position = vec4(0.0); \
   return;
 
-uint outline_colorid_get(void)
+uint outline_colorid_get()
 {
 #ifdef OBINFO_NEW
   eObjectInfoFlag ob_flag = eObjectInfoFlag(floatBitsToUint(drw_infos[resource_id].infos.w));

source/blender/draw/engines/workbench/shaders/workbench_transparent_accum_frag.glsl

@@ -26,7 +26,7 @@ float linear_zdepth(float depth, mat4 proj_mat)
  * McGuire and Bavoil, Weighted Blended Order-Independent Transparency, Journal of
  * Computer Graphics Techniques (JCGT), vol. 2, no. 2, 122–141, 2013
  */
-float calculate_transparent_weight(void)
+float calculate_transparent_weight()
 {
   float z = linear_zdepth(gl_FragCoord.z, drw_view.winmat);
 #if 0

source/blender/draw/intern/shaders/common_hair_lib.glsl

@@ -146,12 +146,12 @@ void hair_get_interp_attrs(
 
 #  if !defined(HAIR_PHASE_SUBDIV) && defined(GPU_VERTEX_SHADER)
 
-int hair_get_strand_id(void)
+int hair_get_strand_id()
 {
   return gl_VertexID / (hairStrandsRes * hairThicknessRes);
 }
 
-int hair_get_base_id(void)
+int hair_get_base_id()
 {
   return gl_VertexID / hairThicknessRes;
 }
@@ -270,13 +270,13 @@ vec4 hair_get_customdata_vec4(const samplerBuffer cd_buf)
   return texelFetch(cd_buf, id).rgba;
 }
 
-vec3 hair_get_strand_pos(void)
+vec3 hair_get_strand_pos()
 {
   int id = hair_get_strand_id() * hairStrandsRes;
   return texelFetch(hairPointBuffer, id).point_position;
 }
 
-vec2 hair_get_barycentric(void)
+vec2 hair_get_barycentric()
 {
   /* To match cycles without breaking into individual segment we encode if we need to invert
    * the first component into the second component. We invert if the barycentricTexCo.y

source/blender/draw/intern/shaders/common_hair_refine_comp.glsl

@@ -17,7 +17,7 @@ layout(std430, binding = 0) writeonly buffer hairPointOutputBuffer
 out_vertbuf;
 #endif
 
-void main(void)
+void main()
 {
   float interp_time;
   vec4 data0, data1, data2, data3;

source/blender/draw/intern/shaders/common_pointcloud_lib.glsl

@@ -123,7 +123,7 @@ vec4 pointcloud_get_customdata_vec4(const samplerBuffer cd_buf)
   return texelFetch(cd_buf, id).rgba;
 }
 
-vec2 pointcloud_get_barycentric(void)
+vec2 pointcloud_get_barycentric()
 {
   /* TODO: To be implemented. */
   return vec2(0.0);

source/blender/gpu/shaders/gpu_shader_2D_nodelink_vert.glsl

@@ -14,7 +14,7 @@
 
 #define MID_VERTEX 65
 
-void main(void)
+void main()
 {
   const float start_gradient_threshold = 0.35;
   const float end_gradient_threshold = 0.65;

source/blender/gpu/shaders/gpu_shader_3D_polyline_geom.glsl

@@ -46,7 +46,7 @@ void do_vertex(const int i, vec4 pos, vec2 ofs)
   gpu_EmitVertex();
 }
 
-void main(void)
+void main()
 {
   vec4 p0 = clip_line_point_homogeneous_space(gl_in[0].gl_Position, gl_in[1].gl_Position);
   vec4 p1 = clip_line_point_homogeneous_space(gl_in[1].gl_Position, gl_in[0].gl_Position);