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https://git.code.sf.net/p/quake/quakeforge
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a28488d2e1
This cuts down on the memory requirements for skins by 25%, and simplifies the shader a bit more, too. While at it, I made alias skins nominally compatible with bsp textures: layer 0 is color, 1 is emissive, and 2 is the color map (emissive was on 3).
38 lines
1,013 B
GLSL
38 lines
1,013 B
GLSL
#version 450
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layout (set = 1, binding = 0) uniform sampler2D Palette;
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layout (set = 2, binding = 0) uniform sampler2DArray Skin;
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layout (push_constant) uniform PushConstants {
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layout (offset = 68)
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uint colors;
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vec4 base_color;
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vec4 fog;
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};
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layout (location = 0) in vec2 st;
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layout (location = 1) in vec4 position;
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layout (location = 2) in vec3 normal;
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layout (location = 0) out vec4 frag_color;
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layout (location = 1) out vec4 frag_emission;
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layout (location = 2) out vec4 frag_normal;
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layout (location = 3) out vec4 frag_position;
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void
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main (void)
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{
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vec4 c;
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vec4 e;
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c = texture (Skin, vec3 (st, 0)) * base_color;
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e = texture (Skin, vec3 (st, 1));
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vec4 rows = unpackUnorm4x8(colors);
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vec4 cmap = texture (Skin, vec3 (st, 2));
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c += texture (Palette, vec2 (cmap.x, rows.x)) * cmap.y;
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c += texture (Palette, vec2 (cmap.z, rows.y)) * cmap.w;
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frag_color = c;
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frag_emission = e;
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frag_normal = vec4(normalize(normal), 1);
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frag_position = position;
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}
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