From c36d05d5aed2f8f7c6342b174692146e2d11c386 Mon Sep 17 00:00:00 2001
From: Matthew Kosarek <mattkae@protonmail.com>
Date: Mon, 22 Mar 2021 20:54:51 -0400
Subject: Refactored frontend, beginnings of general cpp layer, and beginning
 roadmap

---
 frontend/_wasm/intro/Shader.h | 63 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 63 insertions(+)
 create mode 100644 frontend/_wasm/intro/Shader.h

(limited to 'frontend/_wasm/intro/Shader.h')

diff --git a/frontend/_wasm/intro/Shader.h b/frontend/_wasm/intro/Shader.h
new file mode 100644
index 0000000..6ee9981
--- /dev/null
+++ b/frontend/_wasm/intro/Shader.h
@@ -0,0 +1,63 @@
+#pragma once
+
+#include <GL/glew.h>
+#include <string>
+#include <vector>
+#include "mathlib.h"
+
+typedef GLuint Shader;
+
+Shader loadShader(const GLchar* vertexShader, const GLchar* fragmentShader);
+
+inline GLint getShaderUniform(const Shader& shader, const GLchar *name) {
+    GLint uid = glGetUniformLocation(shader, name);
+	if (uid < 0) {
+		return -1;
+	}
+	return uid;
+}
+
+inline GLint getShaderAttribute(const Shader& shader, const GLchar *name) {
+	printf("Getting attribute for shader, name: %d, %s\n", shader, name);
+    GLint uid = glGetAttribLocation(shader, name);
+	if (uid < 0) {
+		return -1;
+	}
+	return uid;
+}
+
+inline void useShader(const Shader& shader) {
+	glUseProgram(shader);
+}
+
+inline void setShaderFloat(GLint location, GLfloat value) {
+    glUniform1f(location, value);
+}
+
+inline void setShaderInt(GLint location, GLint value) {
+	glUniform1i(location, value);
+}
+
+inline void setShaderUint(GLint location, GLuint value) {
+	glUniform1ui(location, value);
+}
+
+inline void setShaderVec2(GLint location, const Vector2& value) {
+	glUniform2f(location, value.x, value.y);
+}
+
+inline void setShaderMat4(GLint location, const Mat4x4& matrix) {
+	glUniformMatrix4fv(location, 1, GL_FALSE, matrix.m);
+}
+
+inline void setShaderBVec3(GLint location, bool first, bool second, bool third) {
+	glUniform3i(location, first, second, third);
+}
+
+inline void setShaderBVec4(GLint location, bool first, bool second, bool third, bool fourth) {
+	glUniform4i(location, first, second, third, fourth);
+}
+
+inline void setShaderBool(GLint location, bool value) {
+	glUniform1i(location, value);
+}
\ No newline at end of file
-- 
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