X-Git-Url: https://harrygodden.com/git/?a=blobdiff_plain;f=shaders%2Fsky.h;fp=shaders%2Fsky.h;h=920036a0110f0ecb9be9dd11b4e78e23a5a7a967;hb=afa80c76d03f5e983092e9d7be33a9102a7ab25e;hp=55a2046ba92e1b85711138730201cd5eaf93387b;hpb=7758c7efec3956c68294bc914e7524045a2b1bd7;p=carveJwlIkooP6JGAAIwe30JlM.git

diff --git a/shaders/sky.h b/shaders/sky.h
index 55a2046..920036a 100644
--- a/shaders/sky.h
+++ b/shaders/sky.h
@@ -40,6 +40,8 @@ static struct vg_shader _shader_sky = {
 "out vec4 FragColor;\n"
 "\n"
 "uniform vec4 uColour;\n"
+"uniform sampler2D uTexGarbage;\n"
+"uniform float uTime;\n"
 "\n"
 "in vec4 aColour;\n"
 "in vec2 aUv;\n"
@@ -55,7 +57,21 @@ static struct vg_shader _shader_sky = {
 "   vec3 skycolour = vec3(0.4,0.5,0.8);\n"
 "   vec3 diffuse = mix( skycolour, horizon, fblend );\n"
 "\n"
-"   FragColor = vec4(diffuse,1.0);\n"
+"   float fmove = uTime * 0.001;\n"
+"   vec2 cloudplane = (aCo.xz / (aCo.y*sign(aNorm.y))) * 0.03;\n"
+"   vec4 clouds1 = texture( uTexGarbage, cloudplane + vec2(0.1,0.4)*fmove*2.0 );\n"
+"   vec4 clouds2 = texture( uTexGarbage, cloudplane + vec2(0.3,0.1)*fmove );\n"
+"\n"
+"   float cloud_d = max(clouds1.b*clouds2.r -0.2 - clouds2.g*0.4,0.0);\n"
+"   float cloud_e = pow(cloud_d,1.8)*pow(abs(aNorm.y),0.3)*2.0;\n"
+"\n"
+"   vec3 colour_ocean = vec3( 0.61, 0.84, 0.9 );\n"
+"   float fhorizon = step( aNorm.y * 0.5 + 0.5, 0.5 );\n"
+"\n"
+"   vec3 skycomp = mix(diffuse, vec3(1.0), cloud_e);\n"
+"   skycomp = mix(mix(pow(colour_ocean,vec3(6.0))*0.6,skycomp, 0.7),skycomp,fhorizon);\n"
+"\n"
+"   FragColor = vec4(skycomp, 1.0);\n"
 "}\n"
 ""},
 };
@@ -63,6 +79,8 @@ static struct vg_shader _shader_sky = {
 static GLuint _uniform_sky_uPv;
 static GLuint _uniform_sky_uMdl;
 static GLuint _uniform_sky_uColour;
+static GLuint _uniform_sky_uTexGarbage;
+static GLuint _uniform_sky_uTime;
 static void shader_sky_uPv(m4x4f m){
    glUniformMatrix4fv( _uniform_sky_uPv, 1, GL_FALSE, (float *)m );
 }
@@ -72,6 +90,12 @@ static void shader_sky_uMdl(m4x3f m){
 static void shader_sky_uColour(v4f v){
    glUniform4fv( _uniform_sky_uColour, 1, v );
 }
+static void shader_sky_uTexGarbage(int i){
+   glUniform1i( _uniform_sky_uTexGarbage, i );
+}
+static void shader_sky_uTime(float f){
+   glUniform1f( _uniform_sky_uTime, f );
+}
 static void shader_sky_register(void){
    vg_shader_register( &_shader_sky );
 }
@@ -80,5 +104,7 @@ static void shader_sky_link(void){
    _uniform_sky_uPv = glGetUniformLocation( _shader_sky.id, "uPv" );
    _uniform_sky_uMdl = glGetUniformLocation( _shader_sky.id, "uMdl" );
    _uniform_sky_uColour = glGetUniformLocation( _shader_sky.id, "uColour" );
+   _uniform_sky_uTexGarbage = glGetUniformLocation( _shader_sky.id, "uTexGarbage" );
+   _uniform_sky_uTime = glGetUniformLocation( _shader_sky.id, "uTime" );
 }
 #endif /* SHADER_sky_H */