Stuff

Signed-off-by: Slendi <slendi@socopon.com>

assets/linear_srgb.fs

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+precision mediump float;
+
+varying vec2 fragTexCoord;
+varying vec4 fragColor;
+uniform sampler2D texture0;
+
+vec3 srgb_to_linear(vec3 c) {
+	bvec3 cutoff = lessThanEqual(c, vec3(0.04045));
+	vec3  low    = c / 12.92;
+	vec3  high   = pow((c + 0.055) / 1.055, vec3(2.4));
+	return mix(high, low, vec3(cutoff));
+}
+
+void main() {
+	vec4 c = texture2D(texture0, fragTexCoord) * fragColor;
+	c.rgb  = srgb_to_linear(c.rgb); // decode to linear
+	gl_FragColor = c;
+}

assets/skybox.fs

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+#version 100
+
+precision mediump float;
+
+// Input vertex attributes (from vertex shader)
+varying vec3 fragPosition;
+
+// Input uniform values
+uniform samplerCube environmentMap;
+uniform bool vflipped;
+uniform bool doGamma;
+
+void main()
+{
+    // Fetch color from texture map
+    vec4 texelColor = vec4(0.0);
+
+    if (vflipped) texelColor = textureCube(environmentMap, vec3(fragPosition.x, -fragPosition.y, fragPosition.z));
+    else texelColor = textureCube(environmentMap, fragPosition);
+
+    vec3 color = vec3(texelColor.x, texelColor.y, texelColor.z);
+
+    if (doGamma) // Apply gamma correction
+    {
+        color = color/(color + vec3(1.0));
+        color = pow(color, vec3(1.0/2.2));
+    }
+
+    // Calculate final fragment color
+    gl_FragColor = vec4(color, 1.0);
+}

assets/skybox.vs

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+#version 100
+
+// Input vertex attributes
+attribute vec3 vertexPosition;
+
+// Input uniform values
+uniform mat4 matProjection;
+uniform mat4 matView;
+
+// Output vertex attributes (to fragment shader)
+varying vec3 fragPosition;
+
+void main()
+{
+    // Calculate fragment position based on model transformations
+    fragPosition = vertexPosition;
+
+    // Remove translation from the view matrix
+    mat4 rotView = mat4(mat3(matView));
+    vec4 clipPos = matProjection*rotView*vec4(vertexPosition, 1.0);
+
+    // Calculate final vertex position
+    gl_Position = clipPos;
+}