From 52742badf8b28dd956e3b0a2a6d6e9b41c223367 Mon Sep 17 00:00:00 2001
From: Dan Goodliffe <dan@randomdan.homeip.net>
Date: Sun, 20 Nov 2022 11:59:00 +0000
Subject: Don't render zero directional light
---
ui/sceneRenderer.cpp | 12 +++++++-----
1 file changed, 7 insertions(+), 5 deletions(-)
diff --git a/ui/sceneRenderer.cpp b/ui/sceneRenderer.cpp
index c3cff7a..2202906 100644
--- a/ui/sceneRenderer.cpp
+++ b/ui/sceneRenderer.cpp
@@ -107,11 +107,13 @@ SceneRenderer::setAmbientLight(const glm::vec3 & colour) const
void
SceneRenderer::setDirectionalLight(const glm::vec3 & colour, const glm::vec3 & direction) const
{
- dirLight.use();
- dirLight.setDirectionalLight(colour, direction);
- glBindVertexArray(displayVAO);
- glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
- glBindVertexArray(0);
+ if (colour.r > 0 || colour.g > 0 || colour.b > 0) {
+ dirLight.use();
+ dirLight.setDirectionalLight(colour, direction);
+ glBindVertexArray(displayVAO);
+ glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
+ glBindVertexArray(0);
+ }
}
SceneRenderer::DirectionalLightProgram::DirectionalLightProgram() :
--
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