mirror of
https://github.com/space-wizards/RobustToolbox.git
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Leon FriedrichandGitHub
cf2d6a1dbf
* Make unshaded sprite layers not require shader/texture changes. * Always sample texture * revert some variable name changes * Use color SIMD
55 lines
1.4 KiB
GLSL
55 lines
1.4 KiB
GLSL
// Vertex position.
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/*layout (location = 0)*/ attribute vec2 aPos;
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// Texture coordinates.
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/*layout (location = 1)*/ attribute vec2 tCoord;
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/*layout (location = 2)*/ attribute vec2 tCoord2;
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// Colour modulation.
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/*layout (location = 3)*/ attribute vec4 modulate;
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varying vec2 UV;
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varying vec2 UV2;
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varying vec2 Pos;
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varying vec4 VtxModulate;
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// Maybe we should merge these CPU side.
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// idk yet.
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uniform mat3 modelMatrix;
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// Allows us to do texture atlassing with texture coordinates 0->1
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// Input texture coordinates get mapped to this range.
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uniform vec4 modifyUV;
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// TODO CLYDE Is this still needed?
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// [SHADER_HEADER_CODE]
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void main()
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{
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vec3 transformed = projectionMatrix * viewMatrix * modelMatrix * vec3(aPos, 1.0);
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vec2 VERTEX = transformed.xy;
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// [SHADER_CODE]
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// Pixel snapping to avoid sampling issues on nvidia.
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VERTEX += 1.0;
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VERTEX /= SCREEN_PIXEL_SIZE*2.0;
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VERTEX = floor(VERTEX + 0.5);
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VERTEX *= SCREEN_PIXEL_SIZE*2.0;
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VERTEX -= 1.0;
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gl_Position = vec4(VERTEX, 0.0, 1.0);
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Pos = (VERTEX + 1.0) / 2.0;
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UV = mix(modifyUV.xy, modifyUV.zw, tCoord);
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UV2 = tCoord2;
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// Negative modulation is being used as a hacky way to squeeze in lighting data.
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// I.e., negative modulation implies we ignore the lighting.
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if (modulate.x < 0.0)
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{
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VtxModulate = -1.0 - zFromSrgb(-1.0 - modulate);
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}
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else
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{
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VtxModulate = zFromSrgb(modulate);
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}
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}
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