Remove the unused location declarations in the shader to make OpenSpace compatible with OpenGL 4.0

modules/base/shaders/path_fs.glsl

@@ -23,11 +23,10 @@
  ****************************************************************************************/
 
 #version __CONTEXT__
-layout(location = 0) in vec4 vs_point_position;
-layout(location = 1) flat in int isHour;
-layout(location = 2) in vec4 vs_point_color;
-//in flat int isHour;
-//uniform vec4 campos;
+in vec4 vs_point_position;
+flat in int isHour;
+in vec4 vs_point_color;
+
 uniform vec3 color;
 
 #include "ABuffer/abufferStruct.hglsl"

modules/base/shaders/path_vs.glsl

@@ -24,6 +24,13 @@
 
 #version __CONTEXT__
 
+in vec4 in_point_position;
+uniform vec3 color;
+
+out vec4 vs_point_position;
+flat out int isHour;
+out vec4 vs_point_color;
+
 uniform mat4 ViewProjection;
 uniform mat4 ModelTransform;
 uniform vec4 objectVelocity;
@@ -49,15 +56,6 @@ float psc_distance(vec4 v1, vec4 v2) {
 	return distance(v1.xyz, v2.xyz); 
 }
 
-layout(location = 0) in vec4 in_point_position;
-//layout(location = 1) in vec4 in_point_color;
-uniform vec3 color;
-//uniform vec4 campos;
-
-layout(location = 0) out vec4 vs_point_position;
-layout(location = 1) flat out int isHour;
-layout(location = 2) out vec4 vs_point_color;
-
 #include "PowerScaling/powerScaling_vs.hglsl"
 
 void main() { 

modules/base/shaders/star_fs.glsl

@@ -35,12 +35,12 @@ uniform float minBillboardSize;
 
 uniform int colorOption;
 
-layout(location = 0) in vec4 vs_position;
-layout(location = 1) in vec3 ge_brightness;
-layout(location = 2) in vec3 ge_velocity;
-layout(location = 3) in float ge_speed;
-layout(location = 4) in vec2 texCoord;
-layout(location = 5) in float billboardSize;
+in vec4 vs_position;
+in vec3 ge_brightness;
+in vec3 ge_velocity;
+in float ge_speed;
+in vec2 texCoord;
+in float billboardSize;
 
 #include "ABuffer/abufferStruct.hglsl"
 #include "ABuffer/abufferAddToBuffer.hglsl"

modules/base/shaders/star_ge.glsl

@@ -37,18 +37,18 @@ const vec2 corners[4] = vec2[4](
 layout(points) in;
 layout(triangle_strip, max_vertices = 4) out;
 
-layout(location = 0) in vec4 psc_position[];
-layout(location = 1) in vec3 vs_brightness[];
-layout(location = 2) in vec3 vs_velocity[];
-layout(location = 3) in float vs_speed[];
-layout(location = 4) in vec4 cam_position[];
+in vec4 psc_position[];
+in vec3 vs_brightness[];
+in vec3 vs_velocity[];
+in float vs_speed[];
+in vec4 cam_position[];
 
-layout(location = 0) out vec4 vs_position;
-layout(location = 1) out vec3 ge_brightness;
-layout(location = 2) out vec3 ge_velocity;
-layout(location = 3) out float ge_speed;
-layout(location = 4) out vec2 texCoord;
-layout(location = 5) out float billboardSize;
+out vec4 vs_position;
+out vec3 ge_brightness;
+out vec3 ge_velocity;
+out float ge_speed;
+out vec2 texCoord;
+out float billboardSize;
 
 uniform mat4 projection;
 

modules/base/shaders/star_vs.glsl

@@ -28,16 +28,16 @@ uniform mat4 model;
 uniform mat4 view;
 uniform mat4 projection;
 
-layout(location = 0) in vec4 in_position;
-layout(location = 1) in vec3 in_brightness;
-layout(location = 2) in vec3 in_velocity;
-layout(location = 3) in float in_speed;
+in vec4 in_position;
+in vec3 in_brightness;
+in vec3 in_velocity;
+in float in_speed;
 
-layout(location = 0) out vec4 psc_position;
-layout(location = 1) out vec3 vs_brightness;
-layout(location = 2) out vec3 vs_velocity;
-layout(location = 3) out float vs_speed;
-layout(location = 4) out vec4 cam_position;
+out vec4 psc_position;
+out vec3 vs_brightness;
+out vec3 vs_velocity;
+out float vs_speed;
+out vec4 cam_position;
 
 #include "PowerScaling/powerScaling_vs.hglsl"
 

modules/newhorizons/shaders/crawlingline_vs.glsl

@@ -42,7 +42,7 @@ void main() {
 	vec4 tmp = in_position;
 	int id = gl_VertexID;
 	
-	vec3 black = { 0.f, 0.f, 0.f };
+	vec3 black = vec3(0.0);
 
 	if(id == targetId)
 		vs_color.xyz = black;

modules/onscreengui/shaders/gui_fs.glsl

@@ -26,10 +26,10 @@
 
 uniform sampler2D tex;
 
-layout(location = 1) in vec2 out_uv;
-layout(location = 2) in vec4 out_color;
+in vec2 out_uv;
+in vec4 out_color;
 
-layout(location = 0) out vec4 FragColor;
+out vec4 FragColor;
 
 void main() {
   FragColor = out_color * texture(tex, out_uv);

modules/onscreengui/shaders/gui_vs.glsl

@@ -26,12 +26,12 @@
 
 uniform mat4 ortho;
 
-layout(location = 0) in vec2 in_position;
-layout(location = 1) in vec2 in_uv;
-layout(location = 2) in vec4 in_color;
+in vec2 in_position;
+in vec2 in_uv;
+in vec4 in_color;
 
-layout(location = 1) out vec2 out_uv;
-layout(location = 2) out vec4 out_color;
+out vec2 out_uv;
+out vec4 out_color;
 
 void main() {
     out_uv = in_uv;