43 lines
996 B
GLSL
43 lines
996 B
GLSL
uniform sampler2D DiffuseTexture, Palette;
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uniform bool EnableDepthPreview;
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uniform float DepthTextureScale;
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varying vec4 vTexCoord;
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varying vec4 vChannelMask;
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varying vec4 vDepthMask;
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void main()
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{
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vec4 x = texture2D(DiffuseTexture, vTexCoord.st);
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vec2 p = vec2(dot(x, vChannelMask), vTexCoord.p);
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vec4 c = texture2D(Palette, p);
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// Discard any transparent fragments (both color and depth)
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if (c.a == 0.0)
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discard;
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if (EnableDepthPreview && length(vDepthMask) > 0.0)
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{
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if (abs(DepthTextureScale) > 0.0)
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{
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// Preview vertex aware depth
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float depth = gl_FragCoord.z + DepthTextureScale * dot(x, vDepthMask);
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// Convert to window coords
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depth = 0.5 * depth + 0.5;
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// Front of the depth buffer is at 0, but we want to render it as bright
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gl_FragColor = vec4(vec3(1.0 - depth), 1.0);
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}
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else
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{
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// Preview boring sprite-only depth
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float depth = dot(x, vDepthMask);
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gl_FragColor = vec4(depth, depth, depth, 1.0);
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}
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}
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else
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gl_FragColor = c;
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}
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