1 files changed, 95 insertions, 0 deletions
diff --git a/v_windows/v/old/examples/sokol/02_cubes_glsl/cube_glsl.glsl b/v_windows/v/old/examples/sokol/02_cubes_glsl/cube_glsl.glsl
new file mode 100644
index 0000000..e19e936
--- /dev/null
+++ b/v_windows/v/old/examples/sokol/02_cubes_glsl/cube_glsl.glsl
@@ -0,0 +1,95 @@
+//------------------------------------------------------------------------------
+//  Shader code for texcube-sapp sample.
+//
+//  NOTE: This source file also uses the '#pragma sokol' form of the
+//  custom tags.
+//------------------------------------------------------------------------------
+//#pragma sokol @ctype mat4 my_mat4
+
+#pragma sokol @vs vs
+uniform vs_params {
+    mat4 mvp;
+};
+
+in vec4 pos;
+in vec4 color0;
+in vec2 texcoord0;
+
+out vec4 color;
+out vec2 uv;
+
+void main() {
+    gl_Position = mvp * pos;
+    color = color0;
+    uv = texcoord0;
+}
+#pragma sokol @end
+
+#pragma sokol @fs fs
+uniform sampler2D tex;
+uniform fs_params {
+	vec2 text_res;
+	float iTime;
+};
+
+in vec4 color;
+in vec2 uv;
+out vec4 frag_color;
+
+//*********************************************************
+// RAY TRACE
+// original code from: https://www.shadertoy.com/view/ldS3DW
+//*********************************************************
+float sphere(vec3 ray, vec3 dir, vec3 center, float radius)
+{
+ vec3 rc  = ray-center;
+ float c  = dot(rc, rc) - (radius*radius);
+ float b  = dot(dir, rc);
+ float d  = b*b - c;
+ float t  = -b - sqrt(abs(d));
+ float st = step(0.0, min(t,d));
+ return mix(-1.0, t, st);
+}
+
+vec3 background(float t, vec3 rd)
+{
+	vec3 light = normalize(vec3(sin(t), 0.6, cos(t)));
+	float sun = max(0.0, dot(rd, light));
+	float sky = max(0.0, dot(rd, vec3(0.0, 1.0, 0.0)));
+	float ground = max(0.0, -dot(rd, vec3(0.0, 1.0, 0.0)));
+	return (pow(sun, 256.0)+0.2*pow(sun, 2.0))*vec3(2.0, 1.6, 1.0) +
+					pow(ground, 0.5)*vec3(0.4, 0.3, 0.2) +
+					pow(sky, 1.0)*vec3(0.5, 0.6, 0.7);
+}
+
+vec4 mainImage(vec2 fragCoord)
+{
+ vec2 uv = (fragCoord-vec2(0.4,0.4))*2.0;
+ 
+ //vec2 uv  = (-1.0 + 2.0*fc.xy / text_res.xy) * vec2(text_res.x/text_res.y, 1.0);
+ vec3 ro    = vec3(0.0, 0.0, -3.0);
+ vec3 rd    = normalize(vec3(uv, 1.0));
+ vec3 p     = vec3(0.0, 0.0, 0.0);
+ float t    = sphere(ro, rd, p, 1.0);
+ vec3 nml   = normalize(p - (ro+rd*t));
+ vec3 bgCol = background(iTime, rd);
+ rd         = reflect(rd, nml);
+ vec3 col   = background(iTime, rd) * vec3(0.9, 0.8, 1.0);
+ vec4 fragColor = vec4( mix(bgCol, col, step(0.0, t)), 1.0 );
+ return fragColor;
+}
+//*********************************************************
+//*********************************************************
+
+void main() {
+		vec4 c = color;
+    vec4 txt = texture(tex, uv/4.0);
+		c = txt * c;
+		vec4 col_ray = mainImage(uv);
+		float txt_mix = mod(iTime,5);
+		frag_color = c*txt_mix*0.1 +	col_ray	;
+}
+
+#pragma sokol @end
+
+#pragma sokol @program cube vs fs