From b7b5db10f9b99815d8a32fafde27c0c51f7e26d3 Mon Sep 17 00:00:00 2001
From: Dan Goodliffe <dan@randomdan.homeip.net>
Date: Mon, 2 Jan 2023 17:26:23 +0000
Subject: Single helper for rendering the fullscreen quad

---
 gfx/gl/sceneRenderer.cpp | 16 ++++++++++------
 gfx/gl/sceneRenderer.h   |  2 ++
 2 files changed, 12 insertions(+), 6 deletions(-)

(limited to 'gfx/gl')

diff --git a/gfx/gl/sceneRenderer.cpp b/gfx/gl/sceneRenderer.cpp
index ee6d927..8b299ad 100644
--- a/gfx/gl/sceneRenderer.cpp
+++ b/gfx/gl/sceneRenderer.cpp
@@ -96,9 +96,7 @@ SceneRenderer::render(const SceneProvider & scene) const
 	glActiveTexture(GL_TEXTURE3);
 	glBindTexture(GL_TEXTURE_2D, gIllumination);
 	lighting.use();
-	glBindVertexArray(displayVAO);
-	glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
-	glBindVertexArray(0);
+	renderQuad();
 }
 
 void
@@ -119,12 +117,18 @@ SceneRenderer::setDirectionalLight(
 		glViewport(0, 0, size.x, size.y);
 		dirLight.use();
 		dirLight.setDirectionalLight(colour, direction, lvp.projections, lvp.regions);
-		glBindVertexArray(displayVAO);
-		glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
-		glBindVertexArray(0);
+		renderQuad();
 	}
 }
 
+void
+SceneRenderer::renderQuad() const
+{
+	glBindVertexArray(displayVAO);
+	glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
+	glBindVertexArray(0);
+}
+
 SceneRenderer::DirectionalLightProgram::DirectionalLightProgram() :
 	Program {lightingShader_vs, directionalLight_fs}, directionLoc {*this, "lightDirection"},
 	colourLoc {*this, "lightColour"}, lightViewProjectionLoc {*this, "lightViewProjection"},
diff --git a/gfx/gl/sceneRenderer.h b/gfx/gl/sceneRenderer.h
index 28acc3b..5f6a36e 100644
--- a/gfx/gl/sceneRenderer.h
+++ b/gfx/gl/sceneRenderer.h
@@ -20,6 +20,8 @@ public:
 	Camera camera;
 
 private:
+	void renderQuad() const;
+
 	glm::ivec2 size;
 	GLuint output;
 	glFrameBuffer gBuffer;
-- 
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