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Diffstat (limited to '3rdparty/bgfx/3rdparty/glslang/Test/spv.always-discard.frag')
-rw-r--r--3rdparty/bgfx/3rdparty/glslang/Test/spv.always-discard.frag36
1 files changed, 36 insertions, 0 deletions
diff --git a/3rdparty/bgfx/3rdparty/glslang/Test/spv.always-discard.frag b/3rdparty/bgfx/3rdparty/glslang/Test/spv.always-discard.frag
new file mode 100644
index 00000000000..6cd4d04fcec
--- /dev/null
+++ b/3rdparty/bgfx/3rdparty/glslang/Test/spv.always-discard.frag
@@ -0,0 +1,36 @@
+#version 140
+in vec2 tex_coord;
+
+void main (void)
+{
+ vec4 white = vec4(1.0);
+ vec4 black = vec4(0.2);
+ vec4 color = white;
+
+ // First, cut out our circle
+ float x = tex_coord.x*2.0 - 1.0;
+ float y = tex_coord.y*2.0 - 1.0;
+
+ float radius = sqrt(x*x + y*y);
+ if (radius > 1.0) {
+ if (radius > 1.1) {
+ ++color;
+ }
+
+ gl_FragColor = color;
+
+ if (radius > 1.2) {
+ ++color;
+ }
+
+ }
+
+ discard;
+
+ // If we're near an edge, darken us a tiny bit
+ if (radius >= 0.75)
+ color -= abs(pow(radius, 16.0)/2.0);
+
+ gl_FragColor = color;
+
+}