From fb29b66fcf029342959d9403964f5e3b3be89a23 Mon Sep 17 00:00:00 2001 From: Ptolemy Date: Thu, 21 Jul 2022 19:55:11 -0700 Subject: SL-17762: PBR: Cleanup code, add clipProjectedLightVars() --- .../shaders/class1/deferred/deferredUtil.glsl | 34 ++++++++++++++++++++++ 1 file changed, 34 insertions(+) (limited to 'indra/newview/app_settings/shaders/class1/deferred') diff --git a/indra/newview/app_settings/shaders/class1/deferred/deferredUtil.glsl b/indra/newview/app_settings/shaders/class1/deferred/deferredUtil.glsl index 4df74b762a..721bd933cc 100644 --- a/indra/newview/app_settings/shaders/class1/deferred/deferredUtil.glsl +++ b/indra/newview/app_settings/shaders/class1/deferred/deferredUtil.glsl @@ -26,6 +26,13 @@ uniform sampler2DRect normalMap; uniform sampler2DRect depthMap; +// projected lighted params +uniform mat4 proj_mat; //screen space to light space projector +uniform vec3 proj_n; // projector normal + +// light params +uniform float size; // light_size + uniform mat4 inv_proj; uniform vec2 screen_res; @@ -52,6 +59,33 @@ void calcHalfVectors(vec3 lv, vec3 n, vec3 v, lightDist = length(lv); } +// In: +// light_center +// pos +// Out: +// dist +// l_dist +// lv +// proj_tc Projector Textue Coordinates +bool clipProjectedLightVars(vec3 light_center, vec3 pos, out float dist, out float l_dist, out vec3 lv, out vec4 proj_tc ) +{ + lv = light_center - pos.xyz; + dist = length(lv); + bool clipped = (dist >= size); + if ( !clipped ) + { + dist /= size; + + l_dist = -dot(lv, proj_n); + vec4 projected_point = (proj_mat * vec4(pos.xyz, 1.0)); + clipped = (projected_point.z < 0.0); + projected_point.xyz /= projected_point.w; + proj_tc = projected_point; + } + + return clipped; +} + vec2 getScreenCoordinate(vec2 screenpos) { vec2 sc = screenpos.xy * 2.0; -- cgit v1.2.3