Adding Spectre/GfxDriver/ShaderProgram base class.

source/GfxDriver/ShaderProgram.cpp

@@ -0,0 +1,69 @@
+
+#include <Spectre/System/Path.h>
+#include <Spectre/System/File.h>
+#include <Spectre/GfxDriver/ShaderProgram.h>
+#include <string>
+
+namespace sp 
+{
+
+ShaderProgram::~ShaderProgram()
+{
+}
+
+bool ShaderProgram::loadFromFile(const std::string& filename)
+{
+    std::string extension = Path::getExtension(filename);
+
+	// Meta file. load real shaders.
+	if (extension == "shader." + m_extension) {
+
+		// FIXME: This is ugly :)
+		std::string base_name = filename.substr(0, filename.length() - extension.length());
+
+		// vert and frag are not optional. they must exist.
+		return	loadFromFile(base_name + "vert." + m_extension, ShaderType::Vertex) &&
+			loadFromFile(base_name + "frag." + m_extension, ShaderType::Fragment);
+
+	} else if (extension == "vert." + m_extension) {
+		return loadFromFile(filename, ShaderType::Vertex);
+	} else if (extension == "frag." + m_extension) {
+		return loadFromFile(filename, ShaderType::Fragment);
+	}
+
+	m_error = "Invalid file extension: " + extension;
+
+	return false;
+}
+
+bool ShaderProgram::loadFromFile(const std::string& filename, ShaderType type)
+{
+	std::string src;
+	File file;
+
+	if (!file.open(filename)) {
+		m_error = "Can't open file: " + filename;
+		return false;
+	}
+
+	// Load file into memory.
+	if (!file.read(src)) {
+		m_error = "Could not read file: " + filename;
+		return false;
+	}
+
+	return loadFromMemory(src, type);
+}
+
+
+bool  ShaderProgram::isLinked() const
+{
+    return m_linked;
+}
+
+std::string ShaderProgram::getLastError() const
+{
+    return m_error;
+}
+
+} // namespace sp