Polishing the scope shaders

libraries/model/src/model/Skybox.h

@@ -25,6 +25,8 @@ typedef glm::vec3 Color;
 
 class Skybox {
 public:
+    typedef gpu::BufferView UniformBufferView;
+
     Skybox();
     Skybox& operator= (const Skybox& skybox);
     virtual ~Skybox() {};
@@ -43,6 +45,8 @@ public:
 
     static void render(gpu::Batch& batch, const ViewFrustum& frustum, const Skybox& skybox);
 
+    const UniformBufferView& getSchemaBuffer() const { return _schemaBuffer; }
+
 protected:
     static const int SKYBOX_SKYMAP_SLOT { 0 };
     static const int SKYBOX_CONSTANTS_SLOT { 0 };

libraries/render-utils/src/ZoneRenderer.cpp

@@ -109,6 +109,7 @@ const gpu::PipelinePointer& DebugZoneLighting::getBackgroundPipeline() {
         gpu::Shader::BindingSet slotBindings;
         slotBindings.insert(gpu::Shader::Binding(std::string("deferredFrameTransformBuffer"), ZONE_DEFERRED_TRANSFORM_BUFFER));
         slotBindings.insert(gpu::Shader::Binding(std::string("skyboxMap"), ZONE_SKYBOX_MAP));
+        slotBindings.insert(gpu::Shader::Binding(std::string("skyboxBuffer"), ZONE_SKYBOX_BUFFER));
         
         gpu::Shader::makeProgram(*program, slotBindings);
 
@@ -188,6 +189,7 @@ void DebugZoneLighting::run(const render::RenderContextPointer& context, const I
         batch.setModelTransform(model);
         if (skybox) {
             batch.setResourceTexture(ZONE_SKYBOX_MAP, skybox->getCubemap());
+            batch.setUniformBuffer(ZONE_SKYBOX_BUFFER, skybox->getSchemaBuffer());
         }
         batch.draw(gpu::TRIANGLE_STRIP, 4);
 

libraries/render-utils/src/ZoneRenderer.h

@@ -68,6 +68,7 @@ protected:
         ZONE_KEYLIGHT_BUFFER,
         ZONE_AMBIENT_BUFFER,
         ZONE_AMBIENT_MAP,
+        ZONE_SKYBOX_BUFFER,
         ZONE_SKYBOX_MAP,
     };
 

libraries/render-utils/src/zone_draw.slh

@@ -0,0 +1,37 @@
+
+//  Generated on <$_SCRIBE_DATE$>
+//
+//  Created by Sam Gateau on 5/17/17.
+//  Copyright 2017 High Fidelity, Inc.
+//
+//  Distributed under the Apache License, Version 2.0.
+//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
+//
+
+<@include DeferredTransform.slh@>
+<$declareDeferredFrameTransform()$>
+
+<@func evalGlobeWidget()@>
+    const float SCOPE_RADIUS = 1.0;
+    const float SCOPE_RADIUS2 = SCOPE_RADIUS * SCOPE_RADIUS;
+    const float EDGE_HALFWIDTH = 0.025;
+    const float EDGE_HALFWIDTH2 = EDGE_HALFWIDTH * EDGE_HALFWIDTH;
+    const float OUT_RADIUS = SCOPE_RADIUS + EDGE_HALFWIDTH;
+    
+    vec2 sphereUV = (varTexCoord0.xy * 2.0 - vec2(1.0)) * OUT_RADIUS;
+    float sphereR2 = dot(sphereUV.xy, sphereUV.xy);
+    if (sphereR2 > OUT_RADIUS * OUT_RADIUS) {
+        discard;
+    }
+    float sphereR = sqrt(sphereR2);
+
+    float edgeFalloff = (SCOPE_RADIUS - sphereR) / (EDGE_HALFWIDTH);
+    float edgeFalloff2 = min(1.0, edgeFalloff * edgeFalloff);
+
+    vec4 base = vec4(0.0, 0.0, 0.0, 1.0 - edgeFalloff2);
+    if (sphereR2 > SCOPE_RADIUS2) {
+        _fragColor = base;
+        return;
+    }
+<@endfunc@>
+

libraries/render-utils/src/zone_drawAmbient.slf

@@ -8,9 +8,7 @@
 //  Distributed under the Apache License, Version 2.0.
 //  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
 //
-
+<@include zone_draw.slh@>
-<@include DeferredTransform.slh@>
-<$declareDeferredFrameTransform()$>
 
 <@include model/Light.slh@>
 
@@ -26,20 +24,8 @@ out vec4 _fragColor;
 
 void main(void) {
 
-    const float INNER_RADIUS = 1.0;
+    <$evalGlobeWidget()$>
-    const float INNER_RADIUS2 = INNER_RADIUS * INNER_RADIUS;
+
-    const float OUTER_RADIUS = 1.05;
-    const float OUTER_RADIUS2 = OUTER_RADIUS * OUTER_RADIUS;
-    vec2 sphereUV = (varTexCoord0.xy * 2.0 - vec2(1.0)) * OUTER_RADIUS;
-    float sphereR2 = dot(sphereUV.xy, sphereUV.xy);
-    if (sphereR2 > OUTER_RADIUS * OUTER_RADIUS) {
-        discard;
-    }
-    if (sphereR2 > INNER_RADIUS2) {
-        float falloff = (sphereR2 - OUTER_RADIUS2) / (OUTER_RADIUS2 - INNER_RADIUS2);
-        _fragColor = vec4(0.0, 0.0, 0.0, falloff * falloff);
-        return;
-    }
     vec3 spherePos = normalize(vec3(sphereUV, sqrt(1.0 - sphereR2)));
 
 
@@ -58,10 +44,11 @@ void main(void) {
    // vec3 ambient = sphericalHarmonics_evalSphericalLight(getLightAmbientSphere(lightAmbient), fragNormal).xyz;
   //  _fragColor = vec4( 0.5  * (fragNormal + vec3(1.0)), 1.0);
 
-    vec3 ambient = (sphereUV.x > 0 ? ambientMap : ambientSH);
+    vec3 color = (sphereUV.x > 0 ? ambientMap : ambientSH);
 
+    color = color * 1.0 - base.w + base.xyz * base.w;
     const float INV_GAMMA_22 = 1.0 / 2.2;
-    _fragColor = vec4(pow(ambient, vec3(INV_GAMMA_22)), 1.0);
+    _fragColor = vec4(pow(color, vec3(INV_GAMMA_22)), 1.0);
 }
 
 

libraries/render-utils/src/zone_drawKeyLight.slf

@@ -8,9 +8,7 @@
 //  Distributed under the Apache License, Version 2.0.
 //  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
 //
-
+<@include zone_draw.slh@>
-<@include DeferredTransform.slh@>
-<$declareDeferredFrameTransform()$>
 
 <@include model/Light.slh@>
 
@@ -25,33 +23,31 @@ out vec4 _fragColor;
 
 void main(void) {
 
-    const float INNER_RADIUS = 1.0;
+    <$evalGlobeWidget()$>
-    const float INNER_RADIUS2 = INNER_RADIUS * INNER_RADIUS;
-    const float OUTER_RADIUS = 1.05;
-    const float OUTER_RADIUS2 = OUTER_RADIUS * OUTER_RADIUS;
-    vec2 sphereUV = (varTexCoord0.xy * 2.0 - vec2(1.0)) * OUTER_RADIUS;
-    float sphereR2 = dot(sphereUV.xy, sphereUV.xy);
-    if (sphereR2 > OUTER_RADIUS * OUTER_RADIUS) {
-        discard;
-    }
-    if (sphereR2 > INNER_RADIUS2) {
-        float falloff = (sphereR2 - OUTER_RADIUS2) / (OUTER_RADIUS2 - INNER_RADIUS2);
-        _fragColor = vec4(0.0, 0.0, 0.0, falloff * falloff);
-        return;
-    }
-    vec3 spherePos = normalize(vec3(sphereUV, sqrt(1.0 - sphereR2)));
-
-
-    vec3 fragNormal = vec3(getViewInverse() * vec4(spherePos, 0.0));
-
 
     Light light = getLight();
-
     vec3 lightDirection = getLightDirection(light);
     vec3 lightIrradiance = getLightIrradiance(light);
+    vec3 color = vec3(0.0);
   
-    vec3 color = lightIrradiance;
+    const float INOUT_RATIO = 0.4;
+    const float SUN_THRESHOLD = 0.99;
 
+    vec3 outSpherePos = normalize(vec3(sphereUV, -sqrt(1.0 - sphereR2)));
+    vec3 outNormal = vec3(getViewInverse() * vec4(outSpherePos, 0.0));
+    float val = step(SUN_THRESHOLD, dot(-lightDirection, outNormal));
+
+    color = lightIrradiance * vec3(val);
+
+    if (sphereR2 < INOUT_RATIO * INOUT_RATIO * SCOPE_RADIUS2) {
+        vec2 inSphereUV = sphereUV / INOUT_RATIO;
+        vec3 inSpherePos = normalize(vec3(inSphereUV, sqrt(1.0 - dot(inSphereUV.xy, inSphereUV.xy))));
+        vec3 inNormal = vec3(getViewInverse() * vec4(inSpherePos, 0.0));
+
+        color += lightIrradiance * vec3(dot(-lightDirection, inNormal));
+    }
+
+    color = color * 1.0 - base.w + base.xyz * base.w;
     const float INV_GAMMA_22 = 1.0 / 2.2;
     _fragColor = vec4(pow(color, vec3(INV_GAMMA_22)), 1.0);
 }

libraries/render-utils/src/zone_drawSkybox.slf

@@ -8,47 +8,41 @@
 //  Distributed under the Apache License, Version 2.0.
 //  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
 //
+<@include zone_draw.slh@>
 
-<@include DeferredTransform.slh@>
-<$declareDeferredFrameTransform()$>
-
-// declareSkyboxMap
 uniform samplerCube skyboxMap;
 
-vec4 evalSkyboxLight(vec3 direction, float lod) {
+struct Skybox {
-    // textureQueryLevels is not available until #430, so we require explicit lod
+    vec4 color;
-    // float mipmapLevel = lod * textureQueryLevels(skyboxMap);
+};
-    return textureLod(skyboxMap, direction, lod);
+
-}
+uniform skyboxBuffer {
+    Skybox skybox;
+};
 
 in vec2 varTexCoord0;
 out vec4 _fragColor;
 
 void main(void) {
+    <$evalGlobeWidget()$>
 
-    const float INNER_RADIUS = 1.0;
-    const float INNER_RADIUS2 = INNER_RADIUS * INNER_RADIUS;
-    const float OUTER_RADIUS = 1.05;
-    const float OUTER_RADIUS2 = OUTER_RADIUS * OUTER_RADIUS;
-    vec2 sphereUV = (varTexCoord0.xy * 2.0 - vec2(1.0)) * OUTER_RADIUS;
-    float sphereR2 = dot(sphereUV.xy, sphereUV.xy);
-    if (sphereR2 > OUTER_RADIUS * OUTER_RADIUS) {
-        discard;
-    }
-    if (sphereR2 > INNER_RADIUS2) {
-        float falloff = (sphereR2 - OUTER_RADIUS2) / (OUTER_RADIUS2 - INNER_RADIUS2);
-        _fragColor = vec4(0.0, 0.0, 0.0, falloff * falloff);
-        return;
-    }
     vec3 spherePos = normalize(vec3(sphereUV, -sqrt(1.0 - sphereR2)));
 
-    vec3 fragNormal = vec3(getViewInverse() * vec4(spherePos, 0.0));
+    vec3 direction = vec3(getViewInverse() * vec4(spherePos, 0.0));
 
-    float lod = 0;
+    vec3 color = skybox.color.rgb;
-    vec3 ambient = evalSkyboxLight(fragNormal, lod).xyz;
 
+    // blend is only set if there is a cubemap
+    if (skybox.color.a > 0.0) {
+        color = texture(skyboxMap, direction).rgb;
+        if (skybox.color.a < 1.0) {
+            color *= skybox.color.rgb;
+        }
+    }
+
+    color = color * 1.0 - base.w + base.xyz * base.w;
     const float INV_GAMMA_22 = 1.0 / 2.2;
-    _fragColor = vec4(pow(ambient, vec3(INV_GAMMA_22)), 1.0);
+    _fragColor = vec4(pow(color, vec3(INV_GAMMA_22)), 1.0);
 }