From 493af2b220d6ba7f883d35a6bb30cb5d07b4a4b5 Mon Sep 17 00:00:00 2001
From: Dan Goodliffe <dan@randomdan.homeip.net>
Date: Thu, 10 Oct 2024 01:01:24 +0100
Subject: Use foliage yaw rotation to select shadow stencil layer
---
gfx/gl/shaders/shadowDynamicPointStencil.gs | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
(limited to 'gfx/gl')
diff --git a/gfx/gl/shaders/shadowDynamicPointStencil.gs b/gfx/gl/shaders/shadowDynamicPointStencil.gs
index b91937d..7e81d97 100644
--- a/gfx/gl/shaders/shadowDynamicPointStencil.gs
+++ b/gfx/gl/shaders/shadowDynamicPointStencil.gs
@@ -2,12 +2,14 @@
#extension GL_ARB_viewport_array : enable
const vec2[] corners = vec2[4](vec2(-1, -1), vec2(-1, 1), vec2(1, -1), vec2(1, 1));
+const float tau = 6.28318531;
uniform mat4 viewProjection[4];
uniform int viewProjections;
uniform vec3 sizes[4];
uniform float size;
+in float vmodelYaw[];
in ivec3 vworldPos[];
flat out vec3 scale;
@@ -19,13 +21,14 @@ layout(triangle_strip, max_vertices = 16) out;
void
main()
{
+ int viewAngle = int(round(4.0 + (vmodelYaw[0] / tau))) % 8;
for (gl_Layer = 0; gl_Layer < viewProjections; ++gl_Layer) {
scale = 2.0 * size / sizes[gl_Layer];
vec4 pos = viewProjection[gl_Layer] * vec4(vworldPos[0], 1);
for (int c = 0; c < corners.length(); ++c) {
gl_Position = pos + vec4(scale.xy * corners[c], 0, 0);
gl_Position.z = max(gl_Position.z, -1);
- texCoord = vec3((corners[c] * 0.5) + 0.5, 0);
+ texCoord = vec3((corners[c] * 0.5) + 0.5, viewAngle);
EmitVertex();
}
EndPrimitive();
--
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