From 1e08193a1678675ac5869b76e8a2339f6de5b773 Mon Sep 17 00:00:00 2001
From: Dan Goodliffe <dan@randomdan.homeip.net>
Date: Thu, 26 Feb 2026 18:04:06 +0000
Subject: Support for the BillboardPainter

Based on the ShadowStenciller, creates flattened images of a model for
simplified mass use in a scene.
---
 gfx/gl/shaders/billboardPainter.geom | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100644 gfx/gl/shaders/billboardPainter.geom

(limited to 'gfx/gl/shaders/billboardPainter.geom')

diff --git a/gfx/gl/shaders/billboardPainter.geom b/gfx/gl/shaders/billboardPainter.geom
new file mode 100644
index 0000000..abd5f83
--- /dev/null
+++ b/gfx/gl/shaders/billboardPainter.geom
@@ -0,0 +1,34 @@
+#version 460 core
+
+include(`materialDetail.glsl')
+
+layout(triangles) in;
+layout(triangle_strip, max_vertices = 24) out;
+
+uniform mat4 viewProjection[8];
+uniform mat4 view[8];
+in vec3 FragPos[];
+in vec2 TexCoords[];
+flat in MaterialDetail Material[];
+in vec3 Normal[];
+in vec4 Colour[];
+out vec2 gTexCoords;
+out vec3 gNormal;
+out vec4 gColour;
+flat out MaterialDetail gMaterial;
+
+void
+main()
+{
+	for (gl_Layer = 0; gl_Layer < viewProjection.length(); ++gl_Layer) {
+		for (int v = 0; v < FragPos.length(); ++v) {
+			gl_Position = viewProjection[gl_Layer] * vec4(FragPos[v], 1);
+			gNormal = (view[gl_Layer] * vec4(Normal[v], 1)).xyz;
+			gTexCoords = TexCoords[v];
+			gMaterial = Material[v];
+			gColour = Colour[v];
+			EmitVertex();
+		}
+		EndPrimitive();
+	}
+}
-- 
cgit v1.3