60 lines
1.3 KiB
GLSL
60 lines
1.3 KiB
GLSL
//======= Copyright (c) 2015-2020 Vera Visions LLC. All rights reserved. =======
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//
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// Purpose:
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//
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// Dirty water shader (diffuse and normalmap only) where a refraction-ish effect
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// is applied onto the diffusemap itself.
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//==============================================================================
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!!ver 110
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!!permu FOG
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!!samps diffuse normalmap
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#include "sys/defs.h"
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varying vec2 tex_c;
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varying vec2 lm_c;
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varying vec3 invsurface;
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varying vec4 tf_c;
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varying vec3 eyeminusvertex;
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varying vec2 wat1_c;
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varying vec2 wat2_c;
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#ifdef VERTEX_SHADER
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void main(void)
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{
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invsurface = v_normal;
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eyeminusvertex = e_eyepos - v_position.xyz;
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tf_c = ftetransform();
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tex_c = v_texcoord;
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gl_Position = tf_c;
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wat1_c = tex_c + vec2(e_time * 0.05, 0.0);
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wat2_c = tex_c - vec2(0, e_time * 0.05);
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}
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#endif
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#ifdef FRAGMENT_SHADER
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#include "sys/fog.h"
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void main(void)
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{
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vec3 norm_f;
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vec4 out_f = vec4(1.0, 1.0, 1.0, 1.0);
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vec2 wat3_c;
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// Use the normalmap to shift the refraction
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norm_f = (texture2D(s_normalmap, wat1_c).xyz);
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norm_f += (texture2D(s_normalmap, wat2_c).xyz);
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norm_f -= 1.0 - (4.0 / 256.0);
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norm_f = normalize(norm_f);
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wat3_c = tex_c + (norm_f.st * 0.025) + vec2(sin(e_time * 0.1), 0);
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// Load reflection and refraction based on our new coords
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out_f.rgb = texture2D(s_diffuse, wat3_c).rgb;
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gl_FragColor = fog4(out_f);
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}
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#endif
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