From f16a7df6135262c91fee2a2f6c46ad2f3caa7157 Mon Sep 17 00:00:00 2001 From: Dan Goodliffe Date: Thu, 13 Apr 2023 02:15:41 +0100 Subject: Update shaders to use material to conditionally lookup sub-texture in the atlas --- gfx/gl/shaders/basicShader.fs | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) (limited to 'gfx/gl/shaders/basicShader.fs') diff --git a/gfx/gl/shaders/basicShader.fs b/gfx/gl/shaders/basicShader.fs index 8bb6350..ab5e58b 100644 --- a/gfx/gl/shaders/basicShader.fs +++ b/gfx/gl/shaders/basicShader.fs @@ -1,14 +1,26 @@ #version 330 core +#extension GL_ARB_shading_language_420pack : enable include(`materialInterface.glsl') include(`geometryOut.glsl') -uniform sampler2D texture0; +layout(binding = 0) uniform sampler2D texture0; +layout(binding = 1) uniform usampler2DRect material; + +vec4 getTextureColour(uint midx, vec2 uv) +{ + if (midx > 0u) { + const vec2 tSize = textureSize(texture0, 0); + const vec4 sPosSize = texture(material, uvec2(0, midx - 1u)); + uv = (sPosSize.xy + sPosSize.zw * fract(uv)) / tSize; + } + return texture(texture0, uv); +} void main() { - vec4 textureColour = texture(texture0, TexCoords); + vec4 textureColour = getTextureColour(Material, TexCoords); float clear = round(mix(textureColour.a, 1, Colour.a)); gPosition = vec4(FragPos, clear); gNormal = vec4(Normal, clear); -- cgit v1.2.3