Migrate builtin macros to '__' prefix

render.c

@@ -223,11 +223,11 @@ static GLuint shaderload(const char*             rpath,
     
     static const GLchar* header_fmt =
         "#version %d\n"
-        "#define UNIFORM_LIMIT %d\n"
-        "#define PRE_SMOOTHED_AUDIO %d\n"
-        "#define SMOOTH_FACTOR %.6f\n"
-        "#define USE_ALPHA %d\n"
-        "#define PREMULTIPLY_ALPHA %d\n"
+        "#define __UNIFORM_LIMIT %d\n"
+        "#define __PRE_SMOOTHED_AUDIO %d\n"
+        "#define __SMOOTH_FACTOR %.6f\n"
+        "#define __USE_ALPHA %d\n"
+        "#define __PREMULTIPLY_ALPHA %d\n"
         "#define USE_STDIN %d\n"
         "#if USE_STDIN == 1\n"
         "uniform %s STDIN;\n"

shaders/circle/2.frag

@@ -12,7 +12,7 @@ out vec4 fragment; /* output */
 void main() {
     fragment = texelFetch(tex, ivec2(gl_FragCoord.x, gl_FragCoord.y), 0);
     #if C_SMOOTH > 0
-    #if USE_ALPHA
+    #if __USE_ALPHA
     vec4
         a0 = texelFetch(tex, ivec2((gl_FragCoord.x + 1), (gl_FragCoord.y + 0)), 0),
         a1 = texelFetch(tex, ivec2((gl_FragCoord.x + 1), (gl_FragCoord.y + 1)), 0),

shaders/radial/1.frag

@@ -31,7 +31,7 @@ out vec4 fragment;
 
 void main() {
     
-    #if USE_ALPHA > 0
+    #if __USE_ALPHA > 0
     #define APPLY_FRAG(f, c) f = vec4(f.rgb * f.a + c.rgb * (1 - clamp(f.a, 0, 1)), max(c.a, f.a))
     fragment = #00000000;
     #else
@@ -48,7 +48,7 @@ void main() {
     float d = sqrt((dx * dx) + (dy * dy)); /* distance */
     if (d > C_RADIUS - (float(C_LINE) / 2.0F) && d < C_RADIUS + (float(C_LINE) / 2.0F)) {
         APPLY_FRAG(fragment, OUTLINE);
-        #if USE_ALPHA > 0
+        #if __USE_ALPHA > 0
         fragment.a *= clamp(((C_LINE / 2) - abs(C_RADIUS - d)) * C_ALIAS_FACTOR, 0, 1);
         #else
         return; /* return immediately if there is no alpha blending available */
@@ -74,7 +74,7 @@ void main() {
             v *= AMPLIFY;                                                  /* amplify */
             #undef smooth_f
             /* offset to fragment distance from inner circle */
-            #if USE_ALPHA > 0
+            #if __USE_ALPHA > 0
             #define ALIAS_FACTOR (((BAR_WIDTH / 2) - abs(ym)) * BAR_ALIAS_FACTOR)
             d -= C_RADIUS; /* start bar overlapping the inner circle for blending */
             #else
@@ -91,7 +91,7 @@ void main() {
                 #else
                 r = COLOR;
                 #endif
-                #if USE_ALPHA > 0
+                #if __USE_ALPHA > 0
                 r.a *= ALIAS_FACTOR;
                 #endif
                 APPLY_FRAG(fragment, r);
@@ -99,7 +99,7 @@ void main() {
             }
             #if BAR_OUTLINE_WIDTH > 0
             if (d <= v) {
-                #if USE_ALPHA > 0
+                #if __USE_ALPHA > 0
                 vec4 r = BAR_OUTLINE;
                 r.a *= ALIAS_FACTOR;
                 APPLY_FRAG(fragment, r);

shaders/util/premultiply.frag

@@ -1,5 +1,5 @@
 
-#if PREMULTIPLY_ALPHA == 0
+#if __PREMULTIPLY_ALPHA == 0
 #error __disablestage
 #endif
 
@@ -11,7 +11,5 @@ in vec4 gl_FragCoord;
 
 void main() {
     fragment = texelFetch(tex, ivec2(gl_FragCoord.x, gl_FragCoord.y), 0);
-    #if PREMULTIPLY_ALPHA > 0
     fragment.rgb *= fragment.a;
-    #endif
 }

shaders/util/smooth.glsl

@@ -34,14 +34,14 @@ float iscale_audio(float idx) {
     return -log((SAMPLE_RANGE) * idx) / (SAMPLE_SCALE);
 }
 
-/* Note: the SMOOTH_FACTOR macro is defined by GLava itself, from `#request setsmoothfactor`*/
+/* Note: the __SMOOTH_FACTOR macro is defined by GLava itself, from `#request setsmoothfactor`*/
 
 float smooth_audio(in sampler1D tex, int tex_sz, highp float idx) {
     
-    #if PRE_SMOOTHED_AUDIO < 1
+    #if __PRE_SMOOTHED_AUDIO < 1
     float
-        smin = scale_audio(clamp(idx - SMOOTH_FACTOR, 0, 1)) * tex_sz,
-        smax = scale_audio(clamp(idx + SMOOTH_FACTOR, 0, 1)) * tex_sz;
+        smin = scale_audio(clamp(idx - __SMOOTH_FACTOR, 0, 1)) * tex_sz,
+        smax = scale_audio(clamp(idx + __SMOOTH_FACTOR, 0, 1)) * tex_sz;
     float m = ((smax - smin) / 2.0F), s, w;
     float rm = smin + m; /* middle */
     

shaders/util/smooth_pass.frag

@@ -6,8 +6,8 @@ uniform int w;
 out vec4 fragment;
 in vec4 gl_FragCoord;
 
-#undef PRE_SMOOTHED_AUDIO
-#define PRE_SMOOTHED_AUDIO 0
+#undef __PRE_SMOOTHED_AUDIO
+#define __PRE_SMOOTHED_AUDIO 0
 
 #include ":util/smooth.glsl"