Replace explicit matrix uniforms with single ubo

shader/lighting/floor.geom

@@ -1,11 +1,9 @@
 #version 430 core
 layout (points) in;
 layout (triangle_strip, max_vertices = 4) out;
+layout (std140, binding = 0) uniform TheMat { mat4 theMat; } ;
 out float lum;
 out vec2 dField;
-
-uniform mat4 worldMat;
-
 void main()
 {
   lum = gl_in[0].gl_Position.w;
@@ -13,16 +11,16 @@ void main()
   float gRad = gl_in[0].gl_Position.z;
 
   dField = vec2 ( 1, 1);
-  gl_Position = worldMat * vec4 (cenPos.x + gRad, cenPos.y + gRad, -0 , 1);
+  gl_Position = theMat * vec4 (cenPos.x + gRad, cenPos.y + gRad, -0 , 1);
   EmitVertex();
   dField = vec2 (-1, 1);
-  gl_Position = worldMat * vec4 (cenPos.x - gRad, cenPos.y + gRad, -0 , 1);
+  gl_Position = theMat * vec4 (cenPos.x - gRad, cenPos.y + gRad, -0 , 1);
   EmitVertex();
   dField = vec2 ( 1,-1);
-  gl_Position = worldMat * vec4 (cenPos.x + gRad, cenPos.y - gRad, -0 , 1);
+  gl_Position = theMat * vec4 (cenPos.x + gRad, cenPos.y - gRad, -0 , 1);
   EmitVertex();
   dField = vec2 (-1,-1);
-  gl_Position = worldMat * vec4 (cenPos.x - gRad, cenPos.y - gRad, -0 , 1);
+  gl_Position = theMat * vec4 (cenPos.x - gRad, cenPos.y - gRad, -0 , 1);
   EmitVertex();
 
   EndPrimitive();

shader/lighting/floor.vert

@@ -1,6 +1,5 @@
 #version 430 core
 layout (location = 0) in vec4 position;
-uniform mat4 worldMat;
 void main()
 {
   gl_Position = position;

shader/lighting/occlude.frag

@@ -1,6 +1,5 @@
 #version 430 core
 out vec4 fColor;
-
 void main()
 {
   fColor = vec4 (0.9,0.5,0,0);

shader/lighting/occlude.geom

@@ -1,11 +1,9 @@
 #version 430 core
 layout (points) in;
 layout (triangle_strip, max_vertices = 11) out;
-
+layout (std140, binding = 0) uniform TheMat { mat4 theMat; } ;
 uniform vec2 lightPos;
-uniform mat4 worldMat;
-
-vec2 lightPosa = ( worldMat * vec4(lightPos,0,1) ).xy;
+vec2 lightPosa = ( theMat * vec4(lightPos,0,1) ).xy;
 
 vec4 shift (vec4 p)
 { return vec4 (p.xy + (200 * (p.xy-lightPos)), 0 , 1);
@@ -28,14 +26,14 @@ vec4 p6 = shift(p2);
 vec4 p7 = vec4 (p6.xy,-0.5,1);
 vec4 p8 = vec4 (p5.xy,-0.5,1);
 
-vec4 a1 = worldMat * p1;
-vec4 a2 = worldMat * p2;
-vec4 a3 = worldMat * p3;
-vec4 a4 = worldMat * p4;
-vec4 a5 = worldMat * p5;
-vec4 a6 = worldMat * p6;
-vec4 a7 = worldMat * p7;
-vec4 a8 = worldMat * p8;
+vec4 a1 = theMat * p1;
+vec4 a2 = theMat * p2;
+vec4 a3 = theMat * p3;
+vec4 a4 = theMat * p4;
+vec4 a5 = theMat * p5;
+vec4 a6 = theMat * p6;
+vec4 a7 = theMat * p7;
+vec4 a8 = theMat * p8;
 
   gl_Position = a4; EmitVertex();
   gl_Position = a3; EmitVertex();

shader/lighting/occlude.vert

@@ -1,6 +1,5 @@
 #version 430 core
 layout (location = 0) in vec4 poss;
-
 void main()
 {
   gl_Position = poss;

shader/lighting/wall.frag

@@ -1,11 +1,8 @@
 #version 430 core
 in vec2 cenPosT;
 in float lum;
-
 in vec3 dField;
-
 out vec4 fColor;
-
 void main()
 {
   float c = pow (1 - min(1, dot(dField,dField)) , 2) * lum ;

shader/lighting/wall.geom

@@ -1,14 +1,11 @@
 #version 430 core
 layout (points) in;
 layout (triangle_strip, max_vertices = 4) out;
-
+layout (std140, binding = 0) uniform TheMat { mat4 theMat; } ;
 out vec3 dField;
 out float lum;
-
 uniform vec2 lightPos;
-uniform mat4 worldMat;
 uniform vec2 radLum;
-
 float isLHS (vec2 startV, vec2 testV)
 {
     return sign( -startV.x * testV.y + startV.y * testV.x);
@@ -31,10 +28,10 @@ if (isLHS (p1.xy - lightPos, p2.xy - lightPos) < 0)
     vec2 d1 = p1.xy - lightPos;
     vec2 d2 = p2.xy - lightPos;
     
-    vec4 a1 = shiftCloser( worldMat * p1 );
-    vec4 a2 = shiftCloser( worldMat * p2 );
-    vec4 a3 = shiftCloser( worldMat * p3 );
-    vec4 a4 = shiftCloser( worldMat * p4 );
+    vec4 a1 = shiftCloser( theMat * p1 );
+    vec4 a2 = shiftCloser( theMat * p2 );
+    vec4 a3 = shiftCloser( theMat * p3 );
+    vec4 a4 = shiftCloser( theMat * p4 );
     
     dField = vec3( d1.x/rad, d1.y/rad, 0);
     gl_Position = a1; 

shader/lighting/wall.vert

@@ -1,6 +1,5 @@
 #version 430 core
 layout (location = 0) in vec4 poss;
-
 void main()
 {
   gl_Position = poss;