dc60405ebc
Addresses the 'doors, windows, and alpha-keyed parts render bright pink' issue the user observed after the Phase 2a visual checkpoint. SurfaceDecoder gains a second overload taking an optional Palette parameter. When the render surface format is PFID_INDEX16 and a palette is supplied, each 16-bit value in SourceData is treated as an index into Palette.Colors (a List<ColorARGB>) and the corresponding ARGB color's channels are written to the output buffer. The original no-palette overload is preserved so the Task 3 unit tests that confirm INDEX16 -> magenta fallback still describe their behavior correctly (INDEX16 without a palette still returns magenta). TextureCache now resolves the RenderSurface's DefaultPaletteId via the dats and passes the resulting Palette (or null) to the decoder. mesh.frag adds an alpha cutout: fragments with sampled alpha < 0.5 are discarded. Without this, transparent regions of alpha-keyed textures (doors, windows, foliage cutouts) would render as opaque rectangles using the texture's background color. This is the standard alpha-tested approach, simpler than full alpha blending and matches how AC's original client rendered these surfaces. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
14 lines
426 B
GLSL
14 lines
426 B
GLSL
#version 430 core
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in vec2 vTex;
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out vec4 fragColor;
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uniform sampler2D uDiffuse;
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void main() {
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vec4 sampled = texture(uDiffuse, vTex);
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// Alpha cutout for doors, windows, vegetation, and other alpha-keyed textures.
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// Without this, zero-alpha pixels in palette-indexed textures render as opaque
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// rectangles where the transparent parts should be.
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if (sampled.a < 0.5) discard;
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fragColor = sampled;
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}
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