From bc0958cc863083b4082161bf12456fdf28ab1c77 Mon Sep 17 00:00:00 2001 From: Dan Goodliffe Date: Sat, 31 Jan 2026 02:51:16 +0000 Subject: Rename shader source in keeping with glsl expectations Swaps name/type of generated files to match class names and source files. --- gfx/gl/shaders/pointLight.frag | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 gfx/gl/shaders/pointLight.frag (limited to 'gfx/gl/shaders/pointLight.frag') diff --git a/gfx/gl/shaders/pointLight.frag b/gfx/gl/shaders/pointLight.frag new file mode 100644 index 0000000..bb2c453 --- /dev/null +++ b/gfx/gl/shaders/pointLight.frag @@ -0,0 +1,29 @@ +#version 460 core + +out vec3 FragColor; + +layout(binding = 0) uniform isampler2D gPosition; +layout(binding = 1) uniform sampler2D gNormal; +uniform ivec4 viewPort; +flat in vec4 geo_centre; +flat in vec3 geo_colour; +flat in float geo_kq; + +void +main() +{ + const vec2 texCoord = gl_FragCoord.xy / viewPort.zw; + const vec3 position = texture(gPosition, texCoord).xyz; + const vec3 lightv = position - geo_centre.xyz; + const float lightDist = length(lightv); + if (lightDist > geo_centre.w) { + discard; + } + const vec3 normal = texture(gNormal, texCoord).xyz; + const vec3 lightDirection = normalize(lightv); + const float normalDot = dot(-lightDirection, normal); + if (normalDot < 0) { + discard; + } + FragColor = (geo_colour * normalDot) / (1 + (geo_kq * pow(lightDist / 1000.0, 2))); +} -- cgit v1.2.3