From 8f2abab0d991211a5acc99877180c35f27e73e45 Mon Sep 17 00:00:00 2001
From: Thomas Harte <thomas.harte@gmail.com>
Date: Mon, 25 Feb 2019 21:55:14 -0500
Subject: [PATCH] Ensures texture targets are initially clear.

---
 Outputs/OpenGL/Primitives/TextureTarget.cpp | 3 +++
 Outputs/OpenGL/Primitives/TextureTarget.hpp | 4 ++--
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/Outputs/OpenGL/Primitives/TextureTarget.cpp b/Outputs/OpenGL/Primitives/TextureTarget.cpp
index 02aac2ed5..175ebff09 100644
--- a/Outputs/OpenGL/Primitives/TextureTarget.cpp
+++ b/Outputs/OpenGL/Primitives/TextureTarget.cpp
@@ -70,6 +70,9 @@ TextureTarget::TextureTarget(GLsizei width, GLsizei height, GLenum texture_unit,
 			break;
 		}
 	}
+
+	// Clear the framebuffer.
+	test_gl(glClear, GL_COLOR_BUFFER_BIT);
 }
 
 TextureTarget::~TextureTarget() {
diff --git a/Outputs/OpenGL/Primitives/TextureTarget.hpp b/Outputs/OpenGL/Primitives/TextureTarget.hpp
index 59fd42d51..22321ed08 100644
--- a/Outputs/OpenGL/Primitives/TextureTarget.hpp
+++ b/Outputs/OpenGL/Primitives/TextureTarget.hpp
@@ -77,9 +77,9 @@ class TextureTarget {
 
 	private:
 		GLuint framebuffer_ = 0, texture_ = 0, renderbuffer_ = 0;
-		GLsizei width_ = 0, height_ = 0;
+		const GLsizei width_ = 0, height_ = 0;
 		GLsizei expanded_width_ = 0, expanded_height_ = 0;
-		GLenum texture_unit_ = 0;
+		const GLenum texture_unit_ = 0;
 
 		mutable std::unique_ptr<Shader> pixel_shader_;
 		mutable GLuint drawing_vertex_array_ = 0, drawing_array_buffer_ = 0;