2f7d0dedbd
Requires https://github.com/space-wizards/RobustToolbox/pull/5023 This uses the new engine features (above) to add a displacement map shader. This allows deforming a sprite based on another sprite. Primary use case is automatically adapting human clothing sprites to different species, something we want to make species like Vox a reality. A basic example of wiring this up with Vox has been added. The system is however incredibly simple and **will** need more work by a content developer to select and toggle displacement maps when appropriate. I am leaving that to somebody else. For example right now the displacement map is applied even if a species already has custom-fit sprites for a piece of clothing, such as the grey jumpsuit for Vox. Basic Aseprite plugins to help with authoring displacement maps have also been made.
19 lines
595 B
Plaintext
19 lines
595 B
Plaintext
uniform sampler2D displacementMap;
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uniform highp float displacementSize;
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uniform highp vec4 displacementUV;
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varying highp vec2 displacementUVOut;
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void vertex() {
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displacementUVOut = mix(displacementUV.xy, displacementUV.zw, tCoord2);
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}
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void fragment() {
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highp vec4 displacementSample = texture2D(displacementMap, displacementUVOut);
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highp vec2 displacementValue = (displacementSample.xy - vec2(128.0 / 255.0)) / (1.0 - 128.0 / 255.0);
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COLOR = zTexture(UV + displacementValue * TEXTURE_PIXEL_SIZE * displacementSize * vec2(1.0, -1.0));
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COLOR.a *= displacementSample.a;
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}
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