[no sq] Move shaders & remove dead Irrlicht tests (#15006)

* Move irrlicht shaders to correct place

* Remove unused Irrlicht tests

client/shaders/Irrlicht

@@ -1 +0,0 @@
-../../irr/media/Shaders

client/shaders/Irrlicht/OneTextureBlend.fsh

@@ -0,0 +1,75 @@
+#version 100
+
+precision mediump float;
+
+/* Uniforms */
+
+uniform int uTextureUsage0;
+uniform sampler2D uTextureUnit0;
+uniform int uBlendType;
+uniform int uFogEnable;
+uniform int uFogType;
+uniform vec4 uFogColor;
+uniform float uFogStart;
+uniform float uFogEnd;
+uniform float uFogDensity;
+
+/* Varyings */
+
+varying vec2 vTextureCoord0;
+varying vec4 vVertexColor;
+varying float vFogCoord;
+
+float computeFog()
+{
+	const float LOG2 = 1.442695;
+	float FogFactor = 0.0;
+
+	if (uFogType == 0) // Exp
+	{
+		FogFactor = exp2(-uFogDensity * vFogCoord * LOG2);
+	}
+	else if (uFogType == 1) // Linear
+	{
+		float Scale = 1.0 / (uFogEnd - uFogStart);
+		FogFactor = (uFogEnd - vFogCoord) * Scale;
+	}
+	else if (uFogType == 2) // Exp2
+	{
+		FogFactor = exp2(-uFogDensity * uFogDensity * vFogCoord * vFogCoord * LOG2);
+	}
+
+	FogFactor = clamp(FogFactor, 0.0, 1.0);
+
+	return FogFactor;
+}
+
+void main()
+{
+	vec4 Color0 = vVertexColor;
+	vec4 Color1 = vec4(1.0, 1.0, 1.0, 1.0);
+
+	if (bool(uTextureUsage0))
+		Color1 = texture2D(uTextureUnit0, vTextureCoord0);
+
+	vec4 FinalColor = Color0 * Color1;
+
+	if (uBlendType == 1)
+	{
+		FinalColor.w = Color0.w;
+	}
+	else if (uBlendType == 2)
+	{
+		FinalColor.w = Color1.w;
+	}
+
+	if (bool(uFogEnable))
+	{
+		float FogFactor = computeFog();
+		vec4 FogColor = uFogColor;
+		FogColor.a = 1.0;
+		FinalColor = mix(FogColor, FinalColor, FogFactor);
+	}
+
+	gl_FragColor = FinalColor;
+}

client/shaders/Irrlicht/Renderer2D.fsh

@@ -0,0 +1,23 @@
+#version 100
+
+precision mediump float;
+
+/* Uniforms */
+
+uniform int uTextureUsage;
+uniform sampler2D uTextureUnit;
+
+/* Varyings */
+
+varying vec2 vTextureCoord;
+varying vec4 vVertexColor;
+
+void main()
+{
+	vec4 Color = vVertexColor;
+
+	if (bool(uTextureUsage))
+		Color *= texture2D(uTextureUnit, vTextureCoord);
+
+	gl_FragColor = Color;
+}

client/shaders/Irrlicht/Renderer2D.vsh

@@ -0,0 +1,24 @@
+#version 100
+
+/* Attributes */
+
+attribute vec4 inVertexPosition;
+attribute vec4 inVertexColor;
+attribute vec2 inTexCoord0;
+
+/* Uniforms */
+
+uniform float uThickness;
+
+/* Varyings */
+
+varying vec2 vTextureCoord;
+varying vec4 vVertexColor;
+
+void main()
+{
+	gl_Position = inVertexPosition;
+	gl_PointSize = uThickness;
+	vTextureCoord = inTexCoord0;
+	vVertexColor = inVertexColor.bgra;
+}

client/shaders/Irrlicht/Renderer2D_noTex.fsh

@@ -0,0 +1,11 @@
+#version 100
+
+precision mediump float;
+
+/* Varyings */
+varying vec4 vVertexColor;
+
+void main()
+{
+	gl_FragColor = vVertexColor;
+}

client/shaders/Irrlicht/Solid.fsh

@@ -0,0 +1,62 @@
+#version 100
+
+precision mediump float;
+
+/* Uniforms */
+
+uniform int uTextureUsage0;
+uniform sampler2D uTextureUnit0;
+uniform int uFogEnable;
+uniform int uFogType;
+uniform vec4 uFogColor;
+uniform float uFogStart;
+uniform float uFogEnd;
+uniform float uFogDensity;
+
+/* Varyings */
+
+varying vec2 vTextureCoord0;
+varying vec4 vVertexColor;
+varying float vFogCoord;
+
+float computeFog()
+{
+	const float LOG2 = 1.442695;
+	float FogFactor = 0.0;
+
+	if (uFogType == 0) // Exp
+	{
+		FogFactor = exp2(-uFogDensity * vFogCoord * LOG2);
+	}
+	else if (uFogType == 1) // Linear
+	{
+		float Scale = 1.0 / (uFogEnd - uFogStart);
+		FogFactor = (uFogEnd - vFogCoord) * Scale;
+	}
+	else if (uFogType == 2) // Exp2
+	{
+		FogFactor = exp2(-uFogDensity * uFogDensity * vFogCoord * vFogCoord * LOG2);
+	}
+
+	FogFactor = clamp(FogFactor, 0.0, 1.0);
+
+	return FogFactor;
+}
+
+void main()
+{
+	vec4 Color = vVertexColor;
+
+	if (bool(uTextureUsage0))
+		Color *= texture2D(uTextureUnit0, vTextureCoord0);
+
+	if (bool(uFogEnable))
+	{
+		float FogFactor = computeFog();
+		vec4 FogColor = uFogColor;
+		FogColor.a = 1.0;
+		Color = mix(FogColor, Color, FogFactor);
+	}
+
+	gl_FragColor = Color;
+}

client/shaders/Irrlicht/Solid.vsh

@@ -0,0 +1,38 @@
+#version 100
+
+/* Attributes */
+
+attribute vec3 inVertexPosition;
+attribute vec3 inVertexNormal;
+attribute vec4 inVertexColor;
+attribute vec2 inTexCoord0;
+
+/* Uniforms */
+
+uniform mat4 uWVPMatrix;
+uniform mat4 uWVMatrix;
+uniform mat4 uNMatrix;
+uniform mat4 uTMatrix0;
+
+uniform float uThickness;
+
+/* Varyings */
+
+varying vec2 vTextureCoord0;
+varying vec4 vVertexColor;
+varying float vFogCoord;
+
+void main()
+{
+	gl_Position = uWVPMatrix * vec4(inVertexPosition, 1.0);
+	gl_PointSize = uThickness;
+
+	vec4 TextureCoord0 = vec4(inTexCoord0.x, inTexCoord0.y, 1.0, 1.0);
+	vTextureCoord0 = vec4(uTMatrix0 * TextureCoord0).xy;
+
+	vVertexColor = inVertexColor.bgra;
+
+	vec3 Position = (uWVMatrix * vec4(inVertexPosition, 1.0)).xyz;
+
+	vFogCoord = length(Position);
+}

client/shaders/Irrlicht/TransparentAlphaChannel.fsh

@@ -0,0 +1,69 @@
+#version 100
+
+precision mediump float;
+
+/* Uniforms */
+
+uniform float uAlphaRef;
+uniform int uTextureUsage0;
+uniform sampler2D uTextureUnit0;
+uniform int uFogEnable;
+uniform int uFogType;
+uniform vec4 uFogColor;
+uniform float uFogStart;
+uniform float uFogEnd;
+uniform float uFogDensity;
+
+/* Varyings */
+
+varying vec2 vTextureCoord0;
+varying vec4 vVertexColor;
+varying float vFogCoord;
+
+float computeFog()
+{
+	const float LOG2 = 1.442695;
+	float FogFactor = 0.0;
+
+	if (uFogType == 0) // Exp
+	{
+		FogFactor = exp2(-uFogDensity * vFogCoord * LOG2);
+	}
+	else if (uFogType == 1) // Linear
+	{
+		float Scale = 1.0 / (uFogEnd - uFogStart);
+		FogFactor = (uFogEnd - vFogCoord) * Scale;
+	}
+	else if (uFogType == 2) // Exp2
+	{
+		FogFactor = exp2(-uFogDensity * uFogDensity * vFogCoord * vFogCoord * LOG2);
+	}
+
+	FogFactor = clamp(FogFactor, 0.0, 1.0);
+
+	return FogFactor;
+}
+
+void main()
+{
+	vec4 Color = vVertexColor;
+
+	if (bool(uTextureUsage0))
+	{
+		Color *= texture2D(uTextureUnit0, vTextureCoord0);
+
+		// TODO: uAlphaRef should rather control sharpness of alpha, don't know how to do that right now and this works in most cases.
+		if (Color.a < uAlphaRef)
+			discard;
+	}
+
+	if (bool(uFogEnable))
+	{
+		float FogFactor = computeFog();
+		vec4 FogColor = uFogColor;
+		FogColor.a = 1.0;
+		Color = mix(FogColor, Color, FogFactor);
+	}
+
+	gl_FragColor = Color;
+}

client/shaders/Irrlicht/TransparentAlphaChannelRef.fsh

@@ -0,0 +1,66 @@
+#version 100
+
+precision mediump float;
+
+/* Uniforms */
+
+uniform float uAlphaRef;
+uniform int uTextureUsage0;
+uniform sampler2D uTextureUnit0;
+uniform int uFogEnable;
+uniform int uFogType;
+uniform vec4 uFogColor;
+uniform float uFogStart;
+uniform float uFogEnd;
+uniform float uFogDensity;
+
+/* Varyings */
+
+varying vec2 vTextureCoord0;
+varying vec4 vVertexColor;
+varying float vFogCoord;
+
+float computeFog()
+{
+	const float LOG2 = 1.442695;
+	float FogFactor = 0.0;
+
+	if (uFogType == 0) // Exp
+	{
+		FogFactor = exp2(-uFogDensity * vFogCoord * LOG2);
+	}
+	else if (uFogType == 1) // Linear
+	{
+		float Scale = 1.0 / (uFogEnd - uFogStart);
+		FogFactor = (uFogEnd - vFogCoord) * Scale;
+	}
+	else if (uFogType == 2) // Exp2
+	{
+		FogFactor = exp2(-uFogDensity * uFogDensity * vFogCoord * vFogCoord * LOG2);
+	}
+
+	FogFactor = clamp(FogFactor, 0.0, 1.0);
+
+	return FogFactor;
+}
+
+void main()
+{
+	vec4 Color = vVertexColor;
+
+	if (bool(uTextureUsage0))
+		Color *= texture2D(uTextureUnit0, vTextureCoord0);
+
+	if (Color.a < uAlphaRef)
+		discard;
+
+	if (bool(uFogEnable))
+	{
+		float FogFactor = computeFog();
+		vec4 FogColor = uFogColor;
+		FogColor.a = 1.0;
+		Color = mix(FogColor, Color, FogFactor);
+	}
+
+	gl_FragColor = Color;
+}

client/shaders/Irrlicht/TransparentVertexAlpha.fsh

@@ -0,0 +1,62 @@
+#version 100
+
+precision mediump float;
+
+/* Uniforms */
+
+uniform int uTextureUsage0;
+uniform sampler2D uTextureUnit0;
+uniform int uFogEnable;
+uniform int uFogType;
+uniform vec4 uFogColor;
+uniform float uFogStart;
+uniform float uFogEnd;
+uniform float uFogDensity;
+
+/* Varyings */
+
+varying vec2 vTextureCoord0;
+varying vec4 vVertexColor;
+varying float vFogCoord;
+
+float computeFog()
+{
+	const float LOG2 = 1.442695;
+	float FogFactor = 0.0;
+
+	if (uFogType == 0) // Exp
+	{
+		FogFactor = exp2(-uFogDensity * vFogCoord * LOG2);
+	}
+	else if (uFogType == 1) // Linear
+	{
+		float Scale = 1.0 / (uFogEnd - uFogStart);
+		FogFactor = (uFogEnd - vFogCoord) * Scale;
+	}
+	else if (uFogType == 2) // Exp2
+	{
+		FogFactor = exp2(-uFogDensity * uFogDensity * vFogCoord * vFogCoord * LOG2);
+	}
+
+	FogFactor = clamp(FogFactor, 0.0, 1.0);
+
+	return FogFactor;
+}
+
+void main()
+{
+	vec4 Color = vVertexColor;
+
+	if (bool(uTextureUsage0))
+		Color *= texture2D(uTextureUnit0, vTextureCoord0);
+
+	if (bool(uFogEnable))
+	{
+		float FogFactor = computeFog();
+		vec4 FogColor = uFogColor;
+		FogColor.a = 1.0;
+		Color = mix(FogColor, Color, FogFactor);
+	}
+
+	gl_FragColor = Color;
+}