Introduce basic shader, texture buffer abstraction

1 files changed, 44 insertions, 0 deletions

diff --git a/src/graphic_shader.h b/src/graphic_shader.h
new file mode 100644
index 0000000..2dd8c41
--- /dev/null
+++ b/src/graphic_shader.h
@@ -0,0 +1,44 @@
+#include "util.h"
+
+class GraphicShader {
+private:
+	const GLuint _id;
+
+public:
+	struct Guard {
+		const GLuint _id;
+
+		Guard(GLuint id): _id(id) {
+			glUseProgram(_id);
+		}
+		~Guard() {
+			glUseProgram(0);
+		}
+	};
+
+	Guard use() {
+		return Guard(_id);
+	}
+
+	GraphicShader(const std::string& vertex, const std::string fragment):
+		_id(glCreateProgram()) {
+		glAttachShader(_id, util::compileShader(vertex, GL_VERTEX_SHADER));
+		glAttachShader(_id, util::compileShader(fragment, GL_FRAGMENT_SHADER));
+		glLinkProgram(_id);
+	};
+	~GraphicShader() {
+		glDeleteProgram(_id);
+	}
+
+	GLuint setUniform(const std::string& name, int value) {
+		GLuint id = util::getUniform(_id, name);
+		glUniform1i(id, value);
+		return id;
+	}
+
+	GLuint setUniform(const std::string& name, glm::mat4& M) {
+		GLuint id = util::getUniform(_id, name);
+		glUniformMatrix4fv(id, 1, GL_FALSE, &M[0][0]);
+		return id;
+	}
+};