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+/****************************************************************************
+**
+** Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB).
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the Qt3D module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, you may use this file under the terms of the BSD license
+** as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+** * Redistributions of source code must retain the above copyright
+** notice, this list of conditions and the following disclaimer.
+** * Redistributions in binary form must reproduce the above copyright
+** notice, this list of conditions and the following disclaimer in
+** the documentation and/or other materials provided with the
+** distribution.
+** * Neither the name of The Qt Company Ltd nor the names of its
+** contributors may be used to endorse or promote products derived
+** from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#version 450 core
+
+layout(std140, binding = 2) uniform extras_uniforms {
+ float texCoordScale;
+ vec3 ka; // Ambient reflectivity
+ vec3 ks; // Specular reflectivity
+ float shininess; // Specular shininess factor
+ float opacity; // Alpha channel
+ vec3 lightPosition;
+ vec3 lightIntensity;
+};
+
+layout(binding=3) uniform sampler2D diffuseTexture;
+
+layout(location=0) in vec3 position;
+layout(location=1) in vec3 normal;
+layout(location=2) in vec2 texCoord;
+
+layout(std140, binding = 0) uniform qt3d_render_view_uniforms {
+ mat4 viewMatrix;
+ mat4 projectionMatrix;
+ mat4 uncorrectedProjectionMatrix;
+ mat4 clipCorrectionMatrix;
+ mat4 viewProjectionMatrix;
+ mat4 inverseViewMatrix;
+ mat4 inverseProjectionMatrix;
+ mat4 inverseViewProjectionMatrix;
+ mat4 viewportMatrix;
+ mat4 inverseViewportMatrix;
+ vec4 textureTransformMatrix;
+ vec3 eyePosition;
+ float aspectRatio;
+ float gamma;
+ float exposure;
+ float time;
+};
+
+layout(location=0) out vec4 fragColor;
+
+vec3 dModel(const in vec2 flipYTexCoord)
+{
+ // Calculate the vector from the light to the fragment
+ vec3 s = normalize(vec3(viewMatrix * vec4(lightPosition, 1.0)) - position);
+
+ // Calculate the vector from the fragment to the eye position
+ // (origin since this is in "eye" or "camera" space)
+ vec3 v = normalize(-position);
+
+ // Reflect the light beam using the normal at this fragment
+ vec3 r = reflect(-s, normal);
+
+ // Calculate the diffuse component
+ float diffuse = max(dot(s, normal), 0.0);
+
+ // Calculate the specular component
+ float specular = 0.0;
+ if (dot(s, normal) > 0.0)
+ specular = (shininess / (8.0 * 3.14)) * pow(max(dot(r, v), 0.0), shininess);
+
+ // Lookup diffuse and specular factors
+ vec3 diffuseColor = texture(diffuseTexture, flipYTexCoord).rgb;
+
+ // Combine the ambient, diffuse and specular contributions
+ return lightIntensity * ((ka + diffuse) * diffuseColor + specular * ks);
+}
+
+void main()
+{
+ vec2 flipYTexCoord = texCoord;
+ flipYTexCoord.y = 1.0 - texCoord.y;
+
+ vec3 result = lightIntensity * ka * texture(diffuseTexture, flipYTexCoord).rgb;
+ result += dModel(flipYTexCoord);
+
+ float alpha = opacity * texture(diffuseTexture, flipYTexCoord).a;
+
+ fragColor = vec4(result, alpha);
+}