From c3eea71370eb94cff1fd96185458643fab6eb2c5 Mon Sep 17 00:00:00 2001
From: Dan Goodliffe <dan@randomdan.homeip.net>
Date: Thu, 3 Nov 2022 19:47:46 +0000
Subject: Restructure how shaders are worked with

Needs a tidy-up
---
 gfx/gl/program.cpp | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 gfx/gl/program.cpp

(limited to 'gfx/gl/program.cpp')

diff --git a/gfx/gl/program.cpp b/gfx/gl/program.cpp
new file mode 100644
index 0000000..c36cc80
--- /dev/null
+++ b/gfx/gl/program.cpp
@@ -0,0 +1,35 @@
+#include "program.h"
+#include "shader.h"
+#include <glm/gtc/type_ptr.hpp>
+#include <glm/gtx/transform.hpp>
+#include <location.hpp>
+#include <maths.h>
+
+void
+Program::linkAndValidate() const
+{
+	glLinkProgram(m_program);
+	Shader::CheckShaderError(m_program, GL_LINK_STATUS, true, "Error linking shader program");
+
+	glValidateProgram(m_program);
+	Shader::CheckShaderError(m_program, GL_VALIDATE_STATUS, true, "Invalid shader program");
+}
+
+void
+Program::use() const
+{
+	glUseProgram(m_program);
+}
+
+Program::UniformLocation::UniformLocation(GLuint program, const char * name) :
+	location {glGetUniformLocation(program, name)}
+{
+}
+
+Program::RequiredUniformLocation::RequiredUniformLocation(GLuint program, const char * name) :
+	UniformLocation {program, name}
+{
+	if (location < 0) {
+		throw std::logic_error("Required uniform does not exist");
+	}
+}
-- 
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